955c6d7b32
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1627 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
8991 lines
226 KiB
C
8991 lines
226 KiB
C
/*************************************************************************
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* *
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* Yap Prolog *
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* *
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* Yap Prolog was developed at NCCUP - Universidade do Porto *
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* *
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* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
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* *
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**************************************************************************
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* *
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* File: index.c *
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* comments: Indexing a Prolog predicate *
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* *
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* Last rev: $Date: 2006-05-02 16:44:11 $,$Author: vsc $ *
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* $Log: not supported by cvs2svn $
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* Revision 1.166 2006/05/02 16:39:06 vsc
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* bug in indexing code
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* fix warning messages for write.c
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*
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* Revision 1.165 2006/04/27 17:04:08 vsc
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* don't use <= to compare with block top (libc may not have block header).
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*
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* Revision 1.164 2006/04/27 14:10:36 rslopes
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* *** empty log message ***
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*
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* Revision 1.163 2006/04/20 15:28:08 vsc
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* more graph stuff.
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*
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* Revision 1.162 2006/04/12 18:56:50 vsc
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* fix bug in clause: a trust_me followed by a try should be implemented by
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* reusing the choice-point.
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*
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* Revision 1.161 2006/04/05 00:16:54 vsc
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* Lots of fixes (check logfile for details
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*
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* Revision 1.160 2006/03/24 17:13:41 rslopes
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* New update to BEAM engine.
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* BEAM now uses YAP Indexing (JITI)
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*
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* Revision 1.159 2006/03/22 20:07:28 vsc
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* take better care of zombies
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*
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* Revision 1.158 2006/03/21 21:30:54 vsc
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* avoid looking around when expanding for statics too.
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*
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* Revision 1.157 2006/03/21 19:20:34 vsc
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* fix fix on index expansion
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*
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* Revision 1.156 2006/03/21 17:11:39 vsc
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* prevent breakage
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*
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* Revision 1.155 2006/03/21 15:06:35 vsc
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* fixes to handle expansion of dyn amic predicates more efficiently.
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*
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* Revision 1.154 2006/03/20 19:51:43 vsc
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* fix indexing and tabling bugs
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*
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* Revision 1.153 2006/02/22 11:55:36 vsc
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* indexing code would get confused about size of float/1, db_reference1.
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*
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* Revision 1.152 2006/02/19 02:55:46 vsc
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* disable indexing on bigints
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*
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* Revision 1.151 2006/01/16 02:57:51 vsc
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* fix bug with very large integers
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* fix bug where indexing code was looking at code after a cut.
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*
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* Revision 1.150 2005/12/23 00:20:13 vsc
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* updates to gprof
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* support for __POWER__
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* Try to saveregs before longjmp.
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*
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* Revision 1.149 2005/12/17 03:25:39 vsc
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* major changes to support online event-based profiling
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* improve error discovery and restart on scanner.
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*
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* Revision 1.148 2005/11/24 15:33:52 tiagosoares
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* removed some compilation warnings related to the cut-c code
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*
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* Revision 1.147 2005/11/18 18:48:52 tiagosoares
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* support for executing c code when a cut occurs
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*
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* Revision 1.146 2005/10/29 02:21:47 vsc
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* people should be able to disable indexing.
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*
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* Revision 1.145 2005/09/08 22:06:44 rslopes
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* BEAM for YAP update...
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*
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* Revision 1.144 2005/08/17 18:48:35 vsc
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* fix bug in processing overflows of expand_clauses.
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*
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* Revision 1.143 2005/08/02 03:09:50 vsc
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* fix debugger to do well nonsource predicates.
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*
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* Revision 1.142 2005/08/01 15:40:37 ricroc
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* TABLING NEW: better support for incomplete tabling
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*
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* Revision 1.141 2005/07/19 16:54:20 rslopes
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* fix for older compilers...
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*
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* Revision 1.140 2005/07/18 17:41:16 vsc
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* Yap should respect single argument indexing.
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*
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* Revision 1.139 2005/07/06 19:33:53 ricroc
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* TABLING: answers for completed calls can now be obtained by loading (new option) or executing (default) them from the trie data structure.
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*
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* Revision 1.138 2005/07/05 18:32:32 vsc
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* ifix some wierd cases in indexing code:
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* would not look at next argument
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* problem with pvar as last clause (R Camacho).
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*
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* Revision 1.137 2005/06/04 07:27:34 ricroc
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* long int support for tabling
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*
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* Revision 1.136 2005/06/03 08:26:32 ricroc
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* float support for tabling
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*
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* Revision 1.135 2005/06/01 20:25:23 vsc
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* == and \= should not need a choice-point in ->
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*
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* Revision 1.134 2005/06/01 16:42:30 vsc
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* put switch_list_nl back
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*
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* Revision 1.133 2005/06/01 14:02:50 vsc
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* get_rid of try_me?, retry_me? and trust_me? instructions: they are not
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* significantly used nowadays.
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*
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* Revision 1.132 2005/05/31 20:04:17 vsc
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* fix cleanup of expand_clauses: make sure we have everything with NULL afterwards.
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*
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* Revision 1.131 2005/05/31 19:42:27 vsc
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* insert some more slack for indices in LU
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* Use doubly linked list for LU indices so that updating is less cumbersome.
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*
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* Revision 1.130 2005/05/31 04:46:06 vsc
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* fix expand_index on tabled code.
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*
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* Revision 1.129 2005/05/31 02:15:53 vsc
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* fix SYSTEM_ERROR messages
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*
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* Revision 1.128 2005/05/30 05:26:49 vsc
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* fix tabling
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* allow atom gc again for now.
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*
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* Revision 1.127 2005/05/27 21:44:00 vsc
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* Don't try to mess with sequences that don't end with a trust.
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* A fix for the atom garbage collector actually ignore floats ;-).
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*
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* Revision 1.126 2005/05/25 18:58:37 vsc
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* fix another bug in nth_instance, thanks to Pat Caldon
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*
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* Revision 1.125 2005/04/28 14:50:45 vsc
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* clause should always deref before testing type
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*
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* Revision 1.124 2005/04/27 20:09:25 vsc
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* indexing code could get confused with suspension points
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* some further improvements on oveflow handling
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* fix paths in Java makefile
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* changs to support gibbs sampling in CLP(BN)
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*
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* Revision 1.123 2005/04/21 13:53:05 vsc
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* fix bug with (var(X) -> being interpreted as var(X) by indexing code
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*
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* Revision 1.122 2005/04/10 04:01:12 vsc
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* bug fixes, I hope!
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*
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* Revision 1.121 2005/04/07 17:48:54 ricroc
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* Adding tabling support for mixed strategy evaluation (batched and local scheduling)
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* UPDATE: compilation flags -DTABLING_BATCHED_SCHEDULING and -DTABLING_LOCAL_SCHEDULING removed. To support tabling use -DTABLING in the Makefile or --enable-tabling in configure.
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* NEW: yap_flag(tabling_mode,MODE) changes the tabling execution mode of all tabled predicates to MODE (batched, local or default).
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* NEW: tabling_mode(PRED,MODE) changes the default tabling execution mode of predicate PRED to MODE (batched or local).
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*
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* Revision 1.120 2005/03/15 18:29:23 vsc
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* fix GPL
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* fix idb: stuff in coroutines.
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*
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* Revision 1.119 2005/03/04 20:30:12 ricroc
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* bug fixes for YapTab support
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*
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* Revision 1.118 2005/03/01 22:25:08 vsc
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* fix pruning bug
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* make DL_MALLOC less enthusiastic about walking through buckets.
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*
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* Revision 1.117 2005/02/25 00:09:06 vsc
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* fix fix, otherwise I'd remove two choice-points :-(.
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*
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* Revision 1.116 2005/02/24 21:46:39 vsc
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* Improve error handling routine, trying to make it more robust.
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* Improve hole handling in stack expansion
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* Clause interrpeter was supposed to prune _trust_me
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* Wrong messages for acos and atanh
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*
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* Revision 1.115 2005/02/21 16:50:00 vsc
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* amd64 fixes
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* library fixes
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*
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* Revision 1.114 2005/01/28 23:14:36 vsc
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* move to Yap-4.5.7
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* Fix clause size
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*
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* Revision 1.113 2005/01/15 05:21:36 vsc
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* fix bug in clause emulator
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*
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* Revision 1.112 2004/12/28 22:20:35 vsc
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* some extra bug fixes for trail overflows: some cannot be recovered that easily,
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* some can.
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*
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* Revision 1.111 2004/12/21 17:17:15 vsc
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* miscounting of variable-only clauses in groups might lead to bug in indexing
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* code.
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*
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* Revision 1.110 2004/12/06 04:50:22 vsc
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* fix bug in removing first clause of a try sequence (lu preds)
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*
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* Revision 1.109 2004/12/05 05:01:24 vsc
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* try to reduce overheads when running with goal expansion enabled.
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* CLPBN fixes
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* Handle overflows when allocating big clauses properly.
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*
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* Revision 1.108 2004/11/19 22:08:42 vsc
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* replace SYSTEM_ERROR by out OUT_OF_WHATEVER_ERROR whenever appropriate.
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*
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* Revision 1.107 2004/11/19 17:14:14 vsc
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* a few fixes for 64 bit compiling.
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*
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* Revision 1.106 2004/11/18 22:32:36 vsc
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* fix situation where we might assume nonextsing double initialisation of C predicates (use
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* Hidden Pred Flag).
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* $host_type was double initialised.
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*
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* Revision 1.105 2004/11/04 18:22:32 vsc
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* don't ever use memory that has been freed (that was done by LU).
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* generic fixes for WIN32 libraries
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*
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* Revision 1.104 2004/10/27 15:56:33 vsc
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* bug fixes on memory overflows and on clauses :- fail being ignored by clause.
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*
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* Revision 1.103 2004/10/22 16:53:19 vsc
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* bug fixes
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*
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* Revision 1.102 2004/10/04 18:56:19 vsc
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* fixes for thread support
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* fix indexing bug (serious)
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*
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* Revision 1.101 2004/09/30 21:37:41 vsc
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* fixes for thread support
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*
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* Revision 1.100 2004/09/30 19:51:54 vsc
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* fix overflow from within clause/2
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*
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* Revision 1.99 2004/09/27 20:45:03 vsc
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* Mega clauses
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* Fixes to sizeof(expand_clauses) which was being overestimated
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* Fixes to profiling+indexing
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* Fixes to reallocation of memory after restoring
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* Make sure all clauses, even for C, end in _Ystop
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* Don't reuse space for Streams
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* Fix Stream_F on StreaNo+1
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*
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* Revision 1.98 2004/09/14 03:30:06 vsc
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* make sure that condor version always grows trail!
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*
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* Revision 1.97 2004/09/03 03:11:09 vsc
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* memory management fixes
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*
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* Revision 1.96 2004/08/27 20:18:52 vsc
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* more small fixes
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*
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* Revision 1.95 2004/08/11 16:14:52 vsc
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* whole lot of fixes:
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* - memory leak in indexing
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* - memory management in WIN32 now supports holes
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* - extend Yap interface, more support for SWI-Interface
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* - new predicate mktime in system
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* - buffer console I/O in WIN32
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*
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* Revision 1.94 2004/07/29 18:15:18 vsc
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* fix severe bug in indexing of floating point numbers
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*
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* Revision 1.93 2004/07/23 19:01:14 vsc
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* fix bad ref count in expand_clauses when copying indexing block
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*
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* Revision 1.92 2004/06/29 19:04:42 vsc
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* fix multithreaded version
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* include new version of Ricardo's profiler
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* new predicat atomic_concat
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* allow multithreaded-debugging
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* small fixes
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*
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* Revision 1.91 2004/06/17 22:07:23 vsc
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* bad bug in indexing code.
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*
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* Revision 1.90 2004/04/29 03:44:04 vsc
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* fix bad suspended clause counter
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*
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* Revision 1.89 2004/04/27 15:03:43 vsc
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* more fixes for expand_clauses
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*
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* Revision 1.88 2004/04/22 03:24:17 vsc
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* trust_logical should protect the last clause, otherwise it cannot
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* jump there.
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*
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* Revision 1.87 2004/04/21 04:01:53 vsc
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* fix bad ordering when inserting second clause
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*
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* Revision 1.86 2004/04/20 22:08:23 vsc
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* fixes for corourining
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*
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* Revision 1.85 2004/04/16 19:27:31 vsc
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* more bug fixes
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*
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* Revision 1.84 2004/04/14 19:10:38 vsc
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* expand_clauses: keep a list of clauses to expand
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* fix new trail scheme for multi-assignment variables
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*
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* Revision 1.83 2004/04/07 22:04:04 vsc
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* fix memory leaks
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*
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* Revision 1.82 2004/03/31 01:02:18 vsc
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* if number of left-over < 1/5 keep list of clauses to expand around
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* fix call to stack expander
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*
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* Revision 1.81 2004/03/25 02:19:10 pmoura
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* Removed debugging line to allow compilation.
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*
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* Revision 1.80 2004/03/19 11:35:42 vsc
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* trim_trail for default machine
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* be more aggressive about try-retry-trust chains.
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* - handle cases where block starts with a wait
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* - don't use _killed instructions, just let the thing rot by itself.
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* *
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* *
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*************************************************************************/
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#ifdef SCCS
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static char SccsId[] = "%W% %G%";
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#endif
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/*
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* This file compiles and removes the indexation code for the prolog compiler
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*
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* Some remarks: *try_me always point to inside the code;
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* try always points to outside
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*
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Algorithm:
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- fetch info on all clauses
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- if #clauses =1 return
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- compute groups:
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seq of variable only clauses
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seq: of one or more type instructions
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bound clauses
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- sort group
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- select constant
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--> type instructions
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--> count constants
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--> switch
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for all arguments:
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select new argument
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*/
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#include "absmi.h"
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#include "compile.h"
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#include "index.h"
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#ifdef DEBUG
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#include "yapio.h"
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#endif
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#ifndef NULL
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#define NULL (void *)0
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#endif
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#if HAVE_STRING_H
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#include <string.h>
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#endif
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#ifdef CUT_C
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#include "cut_c.h"
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#endif
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UInt STATIC_PROTO(do_index, (ClauseDef *,ClauseDef *,struct intermediates *,UInt,UInt,int,int,CELL *));
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UInt STATIC_PROTO(do_compound_index, (ClauseDef *,ClauseDef *,Term *t,struct intermediates *,UInt,UInt,UInt,UInt,int,int,int,CELL *,int));
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UInt STATIC_PROTO(do_dbref_index, (ClauseDef *,ClauseDef *,Term,struct intermediates *,UInt,UInt,int,int,CELL *));
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UInt STATIC_PROTO(do_blob_index, (ClauseDef *,ClauseDef *,Term,struct intermediates *,UInt,UInt,int,int,CELL *));
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static UInt labelno;
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static UInt
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cleanup_sw_on_clauses(CELL larg, UInt sz, OPCODE ecls)
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{
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if (larg & 1) {
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return sz;
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} else {
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yamop *xp = (yamop *)larg;
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if (xp->opc == ecls) {
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if (xp->u.sp.s3 == 1) {
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UInt nsz = sz + (UInt)(NEXTOP((yamop *)NULL,sp))+xp->u.sp.s1*sizeof(yamop *);
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LOCK(ExpandClausesListLock);
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if (ExpandClausesFirst == xp)
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ExpandClausesFirst = xp->u.sp.snext;
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if (ExpandClausesLast == xp) {
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ExpandClausesLast = xp->u.sp.sprev;
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}
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if (xp->u.sp.sprev) {
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xp->u.sp.sprev->u.sp.snext = xp->u.sp.snext;
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}
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if (xp->u.sp.snext) {
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xp->u.sp.snext->u.sp.sprev = xp->u.sp.sprev;
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}
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UNLOCK(ExpandClausesListLock);
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#if DEBUG
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Yap_expand_clauses_sz -= (UInt)(NEXTOP((yamop *)NULL,sp))+xp->u.sp.s1*sizeof(yamop *);
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#endif
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Yap_FreeCodeSpace((char *)xp);
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return nsz;
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} else {
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xp->u.sp.s3--;
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return sz;
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}
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} else {
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return sz;
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}
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}
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}
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static UInt
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recover_from_failed_susp_on_cls(struct intermediates *cint, UInt sz)
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{
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/* we have to recover all allocated blocks,
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just follow the code through. */
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struct PSEUDO *cpc = cint->CodeStart;
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OPCODE ecls = Yap_opcode(_expand_clauses);
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UInt log_upd_pred = cint->CurrentPred->PredFlags & LogUpdatePredFlag;
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while (cpc) {
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switch(cpc->op) {
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case jump_v_op:
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case jump_nv_op:
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sz = cleanup_sw_on_clauses(cpc->rnd1, sz, ecls);
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break;
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case switch_on_type_op:
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{
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TypeSwitch *type_sw = (TypeSwitch *)(cpc->arnds);
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sz = cleanup_sw_on_clauses(type_sw->PairEntry, sz, ecls);
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sz = cleanup_sw_on_clauses(type_sw->ConstEntry, sz, ecls);
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sz = cleanup_sw_on_clauses(type_sw->FuncEntry, sz, ecls);
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sz = cleanup_sw_on_clauses(type_sw->VarEntry, sz, ecls);
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}
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break;
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case switch_c_op:
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case if_c_op:
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{
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AtomSwiEntry *target = (AtomSwiEntry *)(cpc->rnd2);
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int cases = cpc->rnd1, i;
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for (i = 0; i < cases; i++) {
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sz = cleanup_sw_on_clauses(target[i].Label, sz, ecls);
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}
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if (log_upd_pred) {
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LogUpdIndex *lcl = ClauseCodeToLogUpdIndex(cpc->rnd2);
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sz += sizeof(LogUpdIndex)+cases*sizeof(AtomSwiEntry);
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Yap_FreeCodeSpace((char *)lcl);
|
|
} else {
|
|
StaticIndex *scl = ClauseCodeToStaticIndex(cpc->rnd2);
|
|
sz += sizeof(StaticIndex)+cases*sizeof(AtomSwiEntry);
|
|
Yap_FreeCodeSpace((char *)scl);
|
|
}
|
|
}
|
|
break;
|
|
case switch_f_op:
|
|
case if_f_op:
|
|
{
|
|
FuncSwiEntry *target = (FuncSwiEntry *)(cpc->rnd2);
|
|
int cases = cpc->rnd1, i;
|
|
|
|
for (i = 0; i < cases; i++) {
|
|
sz = cleanup_sw_on_clauses(target[i].Label, sz, ecls);
|
|
}
|
|
if (log_upd_pred) {
|
|
LogUpdIndex *lcl = ClauseCodeToLogUpdIndex(cpc->rnd2);
|
|
sz += sizeof(LogUpdIndex)+cases*sizeof(FuncSwiEntry);
|
|
Yap_FreeCodeSpace((char *)lcl);
|
|
} else {
|
|
StaticIndex *scl = ClauseCodeToStaticIndex(cpc->rnd2);
|
|
sz += sizeof(StaticIndex)+cases*sizeof(FuncSwiEntry);
|
|
Yap_FreeCodeSpace((char *)scl);
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
cpc = cpc->nextInst;
|
|
}
|
|
return sz;
|
|
}
|
|
|
|
|
|
static inline int
|
|
smaller(Term t1, Term t2)
|
|
{
|
|
CELL tg1 = TagOf(t1), tg2 = TagOf(t2);
|
|
if (tg1 == tg2) {
|
|
return t1 < t2;
|
|
} else
|
|
return tg1 < tg2;
|
|
}
|
|
|
|
static inline int
|
|
smaller_or_eq(Term t1, Term t2)
|
|
{
|
|
CELL tg1 = TagOf(t1), tg2 = TagOf(t2);
|
|
if (tg1 == tg2) {
|
|
return t1 <= t2;
|
|
} else
|
|
return tg1 < tg2;
|
|
}
|
|
|
|
static inline void
|
|
clcpy(ClauseDef *d, ClauseDef *s)
|
|
{
|
|
memcpy((void *)d, (void *)s, sizeof(ClauseDef));
|
|
}
|
|
|
|
static void
|
|
insort(ClauseDef base[], CELL *p, CELL *q, int my_p)
|
|
{
|
|
CELL *j;
|
|
|
|
if (my_p) {
|
|
p[1] = p[0];
|
|
for (j = p; j < q; j += 2) {
|
|
Term key;
|
|
Int off = *j;
|
|
CELL *i;
|
|
|
|
key = base[off].Tag;
|
|
i = j+1;
|
|
|
|
/* we are at offset 1 */
|
|
while (i > p+1 && smaller(key,base[i[-2]].Tag)) {
|
|
i[0] = i[-2];
|
|
i -= 2;
|
|
}
|
|
i[0] = off;
|
|
}
|
|
} else {
|
|
for (j = p+2; j < q; j += 2) {
|
|
Term key;
|
|
Int off = *j;
|
|
CELL *i;
|
|
|
|
key = base[off].Tag;
|
|
i = j;
|
|
|
|
/* we are at offset 1 */
|
|
while (i > p && smaller(key,base[i[-2]].Tag)) {
|
|
i[0] = i[-2];
|
|
i -= 2;
|
|
}
|
|
i[0] = off;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* copy to a new list of terms */
|
|
static
|
|
void msort(ClauseDef *base, CELL *pt, Int size, int my_p)
|
|
{
|
|
|
|
if (size > 2) {
|
|
Int half_size = size / 2;
|
|
CELL *pt_left, *pt_right, *end_pt, *end_pt_left;
|
|
int left_p, right_p;
|
|
|
|
if (size < 50) {
|
|
insort(base, pt, pt+2*size, my_p);
|
|
return;
|
|
}
|
|
pt_right = pt + half_size*2;
|
|
left_p = my_p^1;
|
|
right_p = my_p;
|
|
msort(base, pt, half_size, left_p);
|
|
msort(base, pt_right, size-half_size, right_p);
|
|
/* now implement a simple merge routine */
|
|
|
|
/* pointer to after the end of the list */
|
|
end_pt = pt + 2*size;
|
|
/* pointer to the element after the last element to the left */
|
|
end_pt_left = pt+half_size*2;
|
|
/* where is left list */
|
|
pt_left = pt+left_p;
|
|
/* where is right list */
|
|
pt_right += right_p;
|
|
/* where is new list */
|
|
pt += my_p;
|
|
/* while there are elements in the left or right vector do compares */
|
|
while (pt_left < end_pt_left && pt_right < end_pt) {
|
|
/* if the element to the left is larger than the one to the right */
|
|
if (smaller_or_eq(base[pt_left[0]].Tag, base[pt_right[0]].Tag)) {
|
|
/* copy the one to the left */
|
|
pt[0] = pt_left[0];
|
|
/* and avance the two pointers */
|
|
pt += 2;
|
|
pt_left += 2;
|
|
} else {
|
|
/* otherwise, copy the one to the right */
|
|
pt[0] = pt_right[0];
|
|
pt += 2;
|
|
pt_right += 2;
|
|
}
|
|
}
|
|
/* if any elements were left in the left vector just copy them */
|
|
while (pt_left < end_pt_left) {
|
|
pt[0] = pt_left[0];
|
|
pt += 2;
|
|
pt_left += 2;
|
|
}
|
|
/* if any elements were left in the right vector
|
|
and they are in the wrong place, just copy them */
|
|
if (my_p != right_p) {
|
|
while(pt_right < end_pt) {
|
|
pt[0] = pt_right[0];
|
|
pt += 2;
|
|
pt_right += 2;
|
|
}
|
|
}
|
|
} else {
|
|
if (size > 1 && smaller(base[pt[2]].Tag,base[pt[0]].Tag)) {
|
|
CELL t = pt[2];
|
|
pt[2+my_p] = pt[0];
|
|
pt[my_p] = t;
|
|
} else if (my_p) {
|
|
pt[1] = pt[0];
|
|
if (size > 1)
|
|
pt[3] = pt[2];
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
copy_back(ClauseDef *dest, CELL *pt, int max) {
|
|
/* first need to say that we had no need to make a copy */
|
|
int i;
|
|
CELL *tmp = pt;
|
|
for (i=0; i < max; i++) {
|
|
if (*tmp != i) {
|
|
ClauseDef cl;
|
|
int j = i;
|
|
CELL *pnt = tmp;
|
|
|
|
/* found a chain */
|
|
/* make a backup copy */
|
|
clcpy(&cl, dest+i);
|
|
do {
|
|
/* follow the chain */
|
|
int k = *pnt;
|
|
|
|
*pnt = j;
|
|
/* printf("i=%d, k = %d, j = %d\n",i,j,k); */
|
|
if (k == i) {
|
|
clcpy(dest+j, &cl);
|
|
break;
|
|
} else {
|
|
clcpy(dest+j, dest+k);
|
|
}
|
|
pnt = pt+2*k;
|
|
j = k;
|
|
} while (TRUE);
|
|
}
|
|
/* we don't need to do swap */
|
|
tmp += 2;
|
|
}
|
|
}
|
|
|
|
/* sort a group of clauses by using their tags */
|
|
static void
|
|
sort_group(GroupDef *grp, CELL *top, struct intermediates *cint)
|
|
{
|
|
int max = (grp->LastClause-grp->FirstClause)+1, i;
|
|
CELL *pt = top;
|
|
|
|
while (top+2*max > (CELL *)Yap_TrailTop) {
|
|
#if USE_SYSTEM_MALLOC
|
|
Yap_Error_Size = 2*max*sizeof(CELL);
|
|
/* grow stack */
|
|
save_machine_regs();
|
|
longjmp(cint->CompilerBotch,4);
|
|
#else
|
|
if (!Yap_growtrail(2*max*CellSize, TRUE)) {
|
|
save_machine_regs();
|
|
longjmp(cint->CompilerBotch,4);
|
|
return;
|
|
}
|
|
#endif
|
|
}
|
|
/* initialise vector */
|
|
for (i=0; i < max; i++) {
|
|
*pt = i;
|
|
pt += 2;
|
|
}
|
|
#define M_EVEN 0
|
|
msort(grp->FirstClause, top, max, M_EVEN);
|
|
copy_back(grp->FirstClause, top, max);
|
|
}
|
|
|
|
/* add copy to register stack for original reg */
|
|
static int
|
|
add_regcopy(wamreg regs[MAX_REG_COPIES], int regs_count, wamreg copy)
|
|
{
|
|
if (regs_count == MAX_REG_COPIES) {
|
|
regs[0] = copy;
|
|
}
|
|
regs[regs_count] = copy;
|
|
return regs_count+1;
|
|
}
|
|
|
|
/* add copy to register stack for original reg */
|
|
static int
|
|
init_regcopy(wamreg regs[MAX_REG_COPIES], wamreg copy)
|
|
{
|
|
regs[0] = copy;
|
|
return 1;
|
|
}
|
|
|
|
/* add copy to register stack for original reg */
|
|
static int
|
|
delete_regcopy(wamreg regs[MAX_REG_COPIES], int regs_count, wamreg copy)
|
|
{
|
|
int i = 0;
|
|
while (i < regs_count) {
|
|
if (regs[i] == copy) {
|
|
/* we found it */
|
|
regs[i] = regs[MAX_REG_COPIES-1];
|
|
return regs_count-1;
|
|
}
|
|
i++;
|
|
}
|
|
/* this copy had overflowed, or it just was not there */
|
|
return regs_count;
|
|
}
|
|
|
|
/* add copy to register stack for original reg */
|
|
inline static int
|
|
regcopy_in(wamreg regs[MAX_REG_COPIES], int regs_count, wamreg copy)
|
|
{
|
|
int i = 0;
|
|
do {
|
|
if (regs[i] == copy) {
|
|
return TRUE;
|
|
}
|
|
i++;
|
|
} while (i < regs_count);
|
|
/* this copy could not be found */
|
|
return FALSE;
|
|
}
|
|
|
|
/* Restores a prolog clause, in its compiled form */
|
|
#if YAPOR
|
|
static int
|
|
has_cut(yamop *pc)
|
|
/*
|
|
* Cl points to the start of the code, IsolFlag tells if we have a single
|
|
* clause for this predicate or not
|
|
*/
|
|
{
|
|
do {
|
|
op_numbers op = Yap_op_from_opcode(pc->opc);
|
|
switch (op) {
|
|
case _Ystop:
|
|
case _Nstop:
|
|
return FALSE;
|
|
/* instructions type ld */
|
|
case _cut:
|
|
case _cut_t:
|
|
case _cut_e:
|
|
case _p_cut_by_y:
|
|
case _p_cut_by_x:
|
|
case _commit_b_y:
|
|
case _commit_b_x:
|
|
return TRUE;
|
|
case _try_me:
|
|
case _retry_me:
|
|
case _trust_me:
|
|
case _profiled_retry_me:
|
|
case _profiled_trust_me:
|
|
case _count_retry_me:
|
|
case _count_trust_me:
|
|
case _spy_or_trymark:
|
|
case _try_and_mark:
|
|
case _profiled_retry_and_mark:
|
|
case _count_retry_and_mark:
|
|
case _retry_and_mark:
|
|
case _try_clause:
|
|
case _retry:
|
|
case _trust:
|
|
#ifdef YAPOR
|
|
case _getwork:
|
|
case _getwork_seq:
|
|
case _sync:
|
|
#endif /* YAPOR */
|
|
#ifdef TABLING
|
|
case _table_load_answer:
|
|
case _table_try_answer:
|
|
case _table_try_me_single:
|
|
case _table_try_me:
|
|
case _table_retry_me:
|
|
case _table_trust_me:
|
|
case _table_answer_resolution:
|
|
case _table_completion:
|
|
#endif /* TABLING */
|
|
pc = NEXTOP(pc,ld);
|
|
break;
|
|
/* instructions type Ill */
|
|
case _enter_lu_pred:
|
|
case _stale_lu_index:
|
|
pc = pc->u.Ill.l1;
|
|
break;
|
|
case _execute:
|
|
case _dexecute:
|
|
pc = NEXTOP(pc,pp);
|
|
break;
|
|
/* instructions type l */
|
|
case _enter_profiling:
|
|
case _count_call:
|
|
case _retry_profiled:
|
|
case _count_retry:
|
|
case _trust_logical_pred:
|
|
case _jump:
|
|
case _move_back:
|
|
case _skip:
|
|
case _jump_if_var:
|
|
case _try_in:
|
|
case _try_clause2:
|
|
case _try_clause3:
|
|
case _try_clause4:
|
|
case _retry2:
|
|
case _retry3:
|
|
case _retry4:
|
|
case _p_eq:
|
|
case _p_dif:
|
|
pc = NEXTOP(pc,l);
|
|
break;
|
|
case _jump_if_nonvar:
|
|
pc = NEXTOP(pc,xll);
|
|
break;
|
|
/* instructions type EC */
|
|
case _alloc_for_logical_pred:
|
|
pc = NEXTOP(pc,EC);
|
|
break;
|
|
/* instructions type e */
|
|
case _trust_fail:
|
|
case _op_fail:
|
|
case _allocate:
|
|
case _deallocate:
|
|
case _write_void:
|
|
case _write_list:
|
|
case _write_l_list:
|
|
#if !defined(YAPOR)
|
|
case _or_last:
|
|
#endif /* !YAPOR */
|
|
case _pop:
|
|
case _index_pred:
|
|
#if THREADS
|
|
case _thread_local:
|
|
#endif
|
|
case _expand_index:
|
|
case _undef_p:
|
|
case _spy_pred:
|
|
case _p_equal:
|
|
case _p_functor:
|
|
case _p_execute_tail:
|
|
case _enter_a_profiling:
|
|
case _count_a_call:
|
|
case _index_dbref:
|
|
case _index_blob:
|
|
#ifdef YAPOR
|
|
case _getwork_first_time:
|
|
#endif /* YAPOR */
|
|
#ifdef TABLING
|
|
case _trie_do_null:
|
|
case _trie_trust_null:
|
|
case _trie_try_null:
|
|
case _trie_retry_null:
|
|
case _trie_do_var:
|
|
case _trie_trust_var:
|
|
case _trie_try_var:
|
|
case _trie_retry_var:
|
|
case _trie_do_val:
|
|
case _trie_trust_val:
|
|
case _trie_try_val:
|
|
case _trie_retry_val:
|
|
case _trie_do_atom:
|
|
case _trie_trust_atom:
|
|
case _trie_try_atom:
|
|
case _trie_retry_atom:
|
|
case _trie_do_list:
|
|
case _trie_trust_list:
|
|
case _trie_try_list:
|
|
case _trie_retry_list:
|
|
case _trie_do_struct:
|
|
case _trie_trust_struct:
|
|
case _trie_try_struct:
|
|
case _trie_retry_struct:
|
|
case _trie_do_extension:
|
|
case _trie_trust_extension:
|
|
case _trie_try_extension:
|
|
case _trie_retry_extension:
|
|
case _trie_do_float:
|
|
case _trie_trust_float:
|
|
case _trie_try_float:
|
|
case _trie_retry_float:
|
|
case _trie_do_long:
|
|
case _trie_trust_long:
|
|
case _trie_try_long:
|
|
case _trie_retry_long:
|
|
#endif /* TABLING */
|
|
pc = NEXTOP(pc,e);
|
|
break;
|
|
case _expand_clauses:
|
|
pc = NEXTOP(pc,sp);
|
|
break;
|
|
/* instructions type x */
|
|
case _save_b_x:
|
|
case _get_list:
|
|
case _put_list:
|
|
case _write_x_var:
|
|
case _write_x_val:
|
|
case _write_x_loc:
|
|
pc = NEXTOP(pc,x);
|
|
break;
|
|
/* instructions type xF */
|
|
case _p_atom_x:
|
|
case _p_atomic_x:
|
|
case _p_integer_x:
|
|
case _p_nonvar_x:
|
|
case _p_number_x:
|
|
case _p_var_x:
|
|
case _p_db_ref_x:
|
|
case _p_primitive_x:
|
|
case _p_compound_x:
|
|
case _p_float_x:
|
|
case _p_cut_by_x:
|
|
pc = NEXTOP(pc,xF);
|
|
break;
|
|
/* instructions type y */
|
|
case _save_b_y:
|
|
case _write_y_var:
|
|
case _write_y_val:
|
|
case _write_y_loc:
|
|
pc = NEXTOP(pc,y);
|
|
break;
|
|
/* instructions type yF */
|
|
case _p_atom_y:
|
|
case _p_atomic_y:
|
|
case _p_integer_y:
|
|
case _p_nonvar_y:
|
|
case _p_number_y:
|
|
case _p_var_y:
|
|
case _p_db_ref_y:
|
|
case _p_primitive_y:
|
|
case _p_compound_y:
|
|
case _p_float_y:
|
|
case _p_cut_by_y:
|
|
pc = NEXTOP(pc,yF);
|
|
break;
|
|
/* instructions type sla */
|
|
case _p_execute:
|
|
case _fcall:
|
|
case _call:
|
|
#ifdef YAPOR
|
|
case _or_last:
|
|
#endif /* YAPOR */
|
|
pc = NEXTOP(pc,sla);
|
|
break;
|
|
/* instructions type sla, but for disjunctions */
|
|
case _either:
|
|
case _or_else:
|
|
pc = NEXTOP(pc,sla);
|
|
break;
|
|
/* instructions type sla, but for functions */
|
|
case _call_cpred:
|
|
case _call_usercpred:
|
|
pc = NEXTOP(pc,sla);
|
|
break;
|
|
/* instructions type xx */
|
|
case _get_x_var:
|
|
case _get_x_val:
|
|
case _glist_valx:
|
|
case _gl_void_varx:
|
|
case _gl_void_valx:
|
|
case _put_x_var:
|
|
case _put_x_val:
|
|
pc = NEXTOP(pc,xx);
|
|
break;
|
|
case _put_xx_val:
|
|
pc = NEXTOP(pc,xxxx);
|
|
break;
|
|
/* instructions type yx */
|
|
case _get_y_var:
|
|
case _get_y_val:
|
|
case _put_y_var:
|
|
case _put_y_val:
|
|
case _put_unsafe:
|
|
pc = NEXTOP(pc,yx);
|
|
break;
|
|
/* instructions type xc */
|
|
case _get_atom:
|
|
case _put_atom:
|
|
case _get_float:
|
|
case _get_longint:
|
|
case _get_bigint:
|
|
pc = NEXTOP(pc,xc);
|
|
break;
|
|
/* instructions type cc */
|
|
case _get_2atoms:
|
|
pc = NEXTOP(pc,cc);
|
|
break;
|
|
/* instructions type ccc */
|
|
case _get_3atoms:
|
|
pc = NEXTOP(pc,ccc);
|
|
break;
|
|
/* instructions type cccc */
|
|
case _get_4atoms:
|
|
pc = NEXTOP(pc,cccc);
|
|
break;
|
|
/* instructions type ccccc */
|
|
case _get_5atoms:
|
|
pc = NEXTOP(pc,ccccc);
|
|
break;
|
|
/* instructions type cccccc */
|
|
case _get_6atoms:
|
|
pc = NEXTOP(pc,cccccc);
|
|
break;
|
|
/* instructions type xf */
|
|
case _get_struct:
|
|
case _put_struct:
|
|
pc = NEXTOP(pc,xf);
|
|
break;
|
|
/* instructions type xy */
|
|
case _glist_valy:
|
|
case _gl_void_vary:
|
|
case _gl_void_valy:
|
|
pc = NEXTOP(pc,xy);
|
|
break;
|
|
/* instructions type ox */
|
|
case _unify_x_var:
|
|
case _unify_x_var_write:
|
|
case _unify_l_x_var:
|
|
case _unify_l_x_var_write:
|
|
case _unify_x_val_write:
|
|
case _unify_x_val:
|
|
case _unify_l_x_val_write:
|
|
case _unify_l_x_val:
|
|
case _unify_x_loc_write:
|
|
case _unify_x_loc:
|
|
case _unify_l_x_loc_write:
|
|
case _unify_l_x_loc:
|
|
case _save_pair_x_write:
|
|
case _save_pair_x:
|
|
case _save_appl_x_write:
|
|
case _save_appl_x:
|
|
pc = NEXTOP(pc,ox);
|
|
break;
|
|
/* instructions type oxx */
|
|
case _unify_x_var2:
|
|
case _unify_x_var2_write:
|
|
case _unify_l_x_var2:
|
|
case _unify_l_x_var2_write:
|
|
pc = NEXTOP(pc,oxx);
|
|
break;
|
|
/* instructions type oy */
|
|
case _unify_y_var:
|
|
case _unify_y_var_write:
|
|
case _unify_l_y_var:
|
|
case _unify_l_y_var_write:
|
|
case _unify_y_val_write:
|
|
case _unify_y_val:
|
|
case _unify_l_y_val_write:
|
|
case _unify_l_y_val:
|
|
case _unify_y_loc_write:
|
|
case _unify_y_loc:
|
|
case _unify_l_y_loc_write:
|
|
case _unify_l_y_loc:
|
|
case _save_pair_y_write:
|
|
case _save_pair_y:
|
|
case _save_appl_y_write:
|
|
case _save_appl_y:
|
|
pc = NEXTOP(pc,oy);
|
|
break;
|
|
/* instructions type o */
|
|
case _unify_void_write:
|
|
case _unify_void:
|
|
case _unify_l_void_write:
|
|
case _unify_l_void:
|
|
case _unify_list_write:
|
|
case _unify_list:
|
|
case _unify_l_list_write:
|
|
case _unify_l_list:
|
|
pc = NEXTOP(pc,o);
|
|
break;
|
|
/* instructions type os */
|
|
case _unify_n_voids_write:
|
|
case _unify_n_voids:
|
|
case _unify_l_n_voids_write:
|
|
case _unify_l_n_voids:
|
|
pc = NEXTOP(pc,os);
|
|
break;
|
|
/* instructions type oc */
|
|
case _unify_atom_write:
|
|
case _unify_atom:
|
|
case _unify_l_atom_write:
|
|
case _unify_l_atom:
|
|
case _unify_float:
|
|
case _unify_l_float:
|
|
case _unify_longint:
|
|
case _unify_l_longint:
|
|
case _unify_bigint:
|
|
case _unify_l_bigint:
|
|
pc = NEXTOP(pc,oc);
|
|
break;
|
|
/* instructions type osc */
|
|
case _unify_n_atoms_write:
|
|
case _unify_n_atoms:
|
|
pc = NEXTOP(pc,osc);
|
|
break;
|
|
/* instructions type of */
|
|
case _unify_struct_write:
|
|
case _unify_struct:
|
|
case _unify_l_struc_write:
|
|
case _unify_l_struc:
|
|
pc = NEXTOP(pc,of);
|
|
break;
|
|
/* instructions type s */
|
|
case _write_n_voids:
|
|
case _pop_n:
|
|
#ifdef TABLING
|
|
case _table_new_answer:
|
|
#endif /* TABLING */
|
|
pc = NEXTOP(pc,s);
|
|
break;
|
|
/* instructions type ps */
|
|
case _write_atom:
|
|
pc = NEXTOP(pc,c);
|
|
break;
|
|
/* instructions type sc */
|
|
case _write_n_atoms:
|
|
pc = NEXTOP(pc,sc);
|
|
break;
|
|
/* instructions type f */
|
|
case _write_struct:
|
|
case _write_l_struc:
|
|
pc = NEXTOP(pc,f);
|
|
break;
|
|
/* instructions type sdl */
|
|
case _call_c_wfail:
|
|
pc = NEXTOP(pc,sdl);
|
|
break;
|
|
/* instructions type lds */
|
|
case _try_c:
|
|
case _try_userc:
|
|
pc = NEXTOP(pc,lds);
|
|
break;
|
|
case _retry_c:
|
|
case _retry_userc:
|
|
pc = NEXTOP(pc,lds);
|
|
break;
|
|
/* instructions type llll */
|
|
case _switch_on_type:
|
|
return FALSE;
|
|
break;
|
|
case _switch_list_nl:
|
|
return FALSE;
|
|
break;
|
|
case _switch_on_arg_type:
|
|
return FALSE;
|
|
break;
|
|
case _switch_on_sub_arg_type:
|
|
return FALSE;
|
|
/* instructions type lll */
|
|
/* instructions type cll */
|
|
case _if_not_then:
|
|
return FALSE;
|
|
/* instructions type sl */
|
|
case _switch_on_func:
|
|
case _switch_on_cons:
|
|
case _go_on_func:
|
|
case _go_on_cons:
|
|
case _if_func:
|
|
case _if_cons:
|
|
return FALSE;
|
|
/* instructions type xxx */
|
|
case _p_plus_vv:
|
|
case _p_minus_vv:
|
|
case _p_times_vv:
|
|
case _p_div_vv:
|
|
case _p_and_vv:
|
|
case _p_or_vv:
|
|
case _p_sll_vv:
|
|
case _p_slr_vv:
|
|
case _p_arg_vv:
|
|
case _p_func2s_vv:
|
|
case _p_func2f_xx:
|
|
pc = NEXTOP(pc,xxx);
|
|
break;
|
|
/* instructions type xxc */
|
|
case _p_plus_vc:
|
|
case _p_minus_cv:
|
|
case _p_times_vc:
|
|
case _p_div_cv:
|
|
case _p_and_vc:
|
|
case _p_or_vc:
|
|
case _p_sll_vc:
|
|
case _p_slr_vc:
|
|
case _p_func2s_vc:
|
|
pc = NEXTOP(pc,xxc);
|
|
break;
|
|
case _p_div_vc:
|
|
case _p_sll_cv:
|
|
case _p_slr_cv:
|
|
case _p_arg_cv:
|
|
pc = NEXTOP(pc,xcx);
|
|
break;
|
|
case _p_func2s_cv:
|
|
pc = NEXTOP(pc,xcx);
|
|
break;
|
|
/* instructions type xyx */
|
|
case _p_func2f_xy:
|
|
pc = NEXTOP(pc,xyx);
|
|
break;
|
|
/* instructions type yxx */
|
|
case _p_plus_y_vv:
|
|
case _p_minus_y_vv:
|
|
case _p_times_y_vv:
|
|
case _p_div_y_vv:
|
|
case _p_and_y_vv:
|
|
case _p_or_y_vv:
|
|
case _p_sll_y_vv:
|
|
case _p_slr_y_vv:
|
|
case _p_arg_y_vv:
|
|
case _p_func2s_y_vv:
|
|
case _p_func2f_yx:
|
|
pc = NEXTOP(pc,yxx);
|
|
break;
|
|
/* instructions type yyx */
|
|
case _p_func2f_yy:
|
|
pc = NEXTOP(pc,yyx);
|
|
break;
|
|
/* instructions type yxc */
|
|
case _p_plus_y_vc:
|
|
case _p_minus_y_cv:
|
|
case _p_times_y_vc:
|
|
case _p_div_y_vc:
|
|
case _p_div_y_cv:
|
|
case _p_and_y_vc:
|
|
case _p_or_y_vc:
|
|
case _p_sll_y_vc:
|
|
case _p_slr_y_vc:
|
|
case _p_func2s_y_vc:
|
|
pc = NEXTOP(pc,yxc);
|
|
break;
|
|
/* instructions type ycx */
|
|
case _p_sll_y_cv:
|
|
case _p_slr_y_cv:
|
|
case _p_arg_y_cv:
|
|
pc = NEXTOP(pc,ycx);
|
|
break;
|
|
/* instructions type ycx */
|
|
case _p_func2s_y_cv:
|
|
pc = NEXTOP(pc,ycx);
|
|
break;
|
|
/* instructions type llxx */
|
|
case _call_bfunc_xx:
|
|
pc = NEXTOP(pc,llxx);
|
|
break;
|
|
/* instructions type llxy */
|
|
case _call_bfunc_yx:
|
|
case _call_bfunc_xy:
|
|
pc = NEXTOP(pc,llxy);
|
|
break;
|
|
case _call_bfunc_yy:
|
|
pc = NEXTOP(pc,llyy);
|
|
break;
|
|
}
|
|
} while (TRUE);
|
|
}
|
|
#else
|
|
#define has_cut(pc) 0
|
|
#endif /* YAPOR */
|
|
|
|
static void
|
|
add_info(ClauseDef *clause, UInt regno)
|
|
{
|
|
wamreg myregs[MAX_REG_COPIES];
|
|
int nofregs;
|
|
yslot ycopy = 0;
|
|
yamop *cl;
|
|
|
|
nofregs = init_regcopy(myregs, Yap_regnotoreg(regno));
|
|
cl = clause->CurrentCode;
|
|
while (TRUE) {
|
|
op_numbers op = Yap_op_from_opcode(cl->opc);
|
|
switch (op) {
|
|
case _alloc_for_logical_pred:
|
|
cl = NEXTOP(cl,EC);
|
|
break;
|
|
case _cut:
|
|
case _cut_t:
|
|
case _cut_e:
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
case _allocate:
|
|
case _deallocate:
|
|
case _write_void:
|
|
case _write_list:
|
|
case _write_l_list:
|
|
case _enter_a_profiling:
|
|
case _count_a_call:
|
|
cl = NEXTOP(cl,e);
|
|
break;
|
|
case _commit_b_x:
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
case _save_b_x:
|
|
case _write_x_val:
|
|
case _write_x_loc:
|
|
case _write_x_var:
|
|
case _put_list:
|
|
if (regcopy_in(myregs, nofregs, cl->u.x.x)) {
|
|
clause->Tag = (CELL)NULL;
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,x);
|
|
break;
|
|
case _p_nonvar_x:
|
|
if (cl->u.xF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (regcopy_in(myregs, nofregs, cl->u.xF.x)) {
|
|
clause->Tag = (CELL)NULL;
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xF);
|
|
break;
|
|
case _p_number_x:
|
|
if (cl->u.xF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (regcopy_in(myregs, nofregs, cl->u.xF.x)) {
|
|
clause->Tag = (_number+1)*sizeof(CELL);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xF);
|
|
break;
|
|
case _p_atomic_x:
|
|
if (cl->u.xF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (regcopy_in(myregs, nofregs, cl->u.xF.x)) {
|
|
clause->Tag = (_atomic+1)*sizeof(CELL);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xF);
|
|
break;
|
|
case _p_integer_x:
|
|
if (cl->u.xF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (regcopy_in(myregs, nofregs, cl->u.xF.x)) {
|
|
clause->Tag = (_integer+1)*sizeof(CELL);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xF);
|
|
break;
|
|
case _p_primitive_x:
|
|
if (cl->u.xF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (regcopy_in(myregs, nofregs, cl->u.xF.x)) {
|
|
clause->Tag = (_primitive+1)*sizeof(CELL);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xF);
|
|
break;
|
|
case _p_compound_x:
|
|
if (cl->u.xF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (regcopy_in(myregs, nofregs, cl->u.xF.x)) {
|
|
clause->Tag = (_compound+1)*sizeof(CELL);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xF);
|
|
break;
|
|
case _p_var_x:
|
|
if (cl->u.xF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (regcopy_in(myregs, nofregs, cl->u.xF.x)) {
|
|
clause->Tag = (_var+1)*sizeof(CELL);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xF);
|
|
break;
|
|
case _p_db_ref_x:
|
|
if (cl->u.xF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (regcopy_in(myregs, nofregs, cl->u.xF.x)) {
|
|
clause->Tag = AbsAppl((CELL *)FunctorDBRef);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xF);
|
|
break;
|
|
case _p_float_x:
|
|
if (cl->u.xF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (regcopy_in(myregs, nofregs, cl->u.xF.x)) {
|
|
clause->Tag = AbsAppl((CELL *)FunctorDouble);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xF);
|
|
break;
|
|
case _p_atom_x:
|
|
if (cl->u.xF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (regcopy_in(myregs, nofregs, cl->u.xF.x)) {
|
|
clause->Tag = (_atom+1)*sizeof(CELL);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xF);
|
|
break;
|
|
case _get_list:
|
|
if (regcopy_in(myregs, nofregs, cl->u.x.x)) {
|
|
clause->Tag = AbsPair(NULL);
|
|
clause->u.WorkPC = NEXTOP(cl,x);
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,x);
|
|
break;
|
|
case _p_cut_by_x:
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
case _commit_b_y:
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
case _save_b_y:
|
|
case _write_y_var:
|
|
case _write_y_val:
|
|
case _write_y_loc:
|
|
if (cl->u.y.y == ycopy) {
|
|
clause->Tag = (CELL)NULL;
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,y);
|
|
break;
|
|
case _p_nonvar_y:
|
|
if (cl->u.yF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (cl->u.yF.y == ycopy) {
|
|
clause->Tag = (CELL)NULL;
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,yF);
|
|
break;
|
|
case _p_atomic_y:
|
|
if (cl->u.yF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (ycopy == cl->u.yF.y) {
|
|
clause->Tag = (_atomic+1)*sizeof(CELL);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,yF);
|
|
break;
|
|
case _p_integer_y:
|
|
if (cl->u.yF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (ycopy == cl->u.yF.y) {
|
|
clause->Tag = (_integer+1)*sizeof(CELL);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,yF);
|
|
break;
|
|
case _p_number_y:
|
|
if (cl->u.yF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (ycopy == cl->u.yF.y) {
|
|
clause->Tag = (_number+1)*sizeof(CELL);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,yF);
|
|
break;
|
|
case _p_primitive_y:
|
|
if (cl->u.yF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (ycopy == cl->u.yF.y) {
|
|
clause->Tag = (_primitive+1)*sizeof(CELL);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,yF);
|
|
break;
|
|
case _p_compound_y:
|
|
if (cl->u.yF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (ycopy == cl->u.yF.y) {
|
|
clause->Tag = (_compound+1)*sizeof(CELL);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,yF);
|
|
break;
|
|
case _p_db_ref_y:
|
|
if (cl->u.yF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (ycopy == cl->u.yF.y) {
|
|
clause->Tag = AbsAppl((CELL *)FunctorDBRef);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,yF);
|
|
break;
|
|
case _p_float_y:
|
|
if (cl->u.yF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (ycopy == cl->u.yF.y) {
|
|
clause->Tag = AbsAppl((CELL *)FunctorDouble);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,yF);
|
|
break;
|
|
case _p_atom_y:
|
|
if (cl->u.yF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (cl->u.yF.y == ycopy) {
|
|
clause->Tag = (_atom+1)*sizeof(CELL);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,yF);
|
|
break;
|
|
case _p_var_y:
|
|
if (cl->u.yF.F != FAILCODE) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (cl->u.yF.y == ycopy) {
|
|
clause->Tag = (_var+1)*sizeof(CELL);
|
|
clause->u.t_ptr = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,yF);
|
|
break;
|
|
case _p_cut_by_y:
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
case _p_execute:
|
|
case _fcall:
|
|
case _call:
|
|
#ifdef YAPOR
|
|
case _or_last:
|
|
#endif /* YAPOR */
|
|
case _either:
|
|
case _or_else:
|
|
case _call_cpred:
|
|
case _call_usercpred:
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
case _get_x_var:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xx.xr)) {
|
|
nofregs = add_regcopy(myregs, nofregs, cl->u.xx.xl);
|
|
cl = NEXTOP(cl,xx);
|
|
break;
|
|
}
|
|
case _put_x_var:
|
|
/* if the last slot I am using, get out */
|
|
if (regcopy_in(myregs, nofregs, cl->u.xx.xl) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.xx.xl)) == 0 &&
|
|
!ycopy) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xx);
|
|
break;
|
|
case _get_x_val:
|
|
/* alias two registers */
|
|
if (regcopy_in(myregs, nofregs, cl->u.xx.xl)) {
|
|
nofregs = add_regcopy(myregs, nofregs, cl->u.xx.xr);
|
|
} else if (regcopy_in(myregs, nofregs, cl->u.xx.xr)) {
|
|
nofregs = add_regcopy(myregs, nofregs, cl->u.xx.xl);
|
|
}
|
|
cl = NEXTOP(cl,xx);
|
|
break;
|
|
case _put_x_val:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xx.xl)) {
|
|
nofregs = add_regcopy(myregs, nofregs, cl->u.xx.xr);
|
|
} else if (regcopy_in(myregs, nofregs, cl->u.xx.xr) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.xx.xr)) == 0 &&
|
|
!ycopy) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xx);
|
|
break;
|
|
case _put_xx_val:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xxxx.xl1)) {
|
|
nofregs = add_regcopy(myregs, nofregs, cl->u.xxxx.xr1);
|
|
} else if (regcopy_in(myregs, nofregs, cl->u.xxxx.xr1) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.xxxx.xr1)) == 0 &&
|
|
!ycopy) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (regcopy_in(myregs, nofregs, cl->u.xxxx.xl2)) {
|
|
nofregs = add_regcopy(myregs, nofregs, cl->u.xxxx.xr2);
|
|
} else if (regcopy_in(myregs, nofregs, cl->u.xxxx.xr2) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.xxxx.xr2)) == 0 &&
|
|
!ycopy) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xxxx);
|
|
break;
|
|
case _glist_valx:
|
|
case _gl_void_varx:
|
|
case _gl_void_valx:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xx.xl)) {
|
|
clause->u.WorkPC = cl;
|
|
clause->Tag = AbsPair(NULL);
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xx);
|
|
break;
|
|
case _get_y_var:
|
|
if (regcopy_in(myregs, nofregs, cl->u.yx.x)) {
|
|
ycopy = cl->u.yx.y;
|
|
}
|
|
case _put_y_var:
|
|
cl = NEXTOP(cl,yx);
|
|
break;
|
|
case _put_y_val:
|
|
case _put_unsafe:
|
|
if (ycopy == cl->u.yx.y) {
|
|
nofregs = add_regcopy(myregs, nofregs, cl->u.yx.x);
|
|
} else {
|
|
nofregs = delete_regcopy(myregs, nofregs, cl->u.yx.x);
|
|
}
|
|
cl = NEXTOP(cl,yx);
|
|
break;
|
|
case _get_y_val:
|
|
if (regcopy_in(myregs, nofregs, cl->u.yx.x)) {
|
|
ycopy = cl->u.yx.y;
|
|
} else if (ycopy == cl->u.yx.y) {
|
|
nofregs = add_regcopy(myregs, nofregs, cl->u.yx.x);
|
|
}
|
|
cl = NEXTOP(cl,yx);
|
|
break;
|
|
case _get_atom:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xc.x)) {
|
|
clause->Tag = cl->u.xc.c;
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,xc);
|
|
}
|
|
break;
|
|
case _get_2atoms:
|
|
if (regcopy_in(myregs, nofregs, Yap_regnotoreg(1))) {
|
|
clause->Tag = cl->u.cc.c1;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(2))) {
|
|
clause->Tag = cl->u.cc.c2;
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,cc);
|
|
}
|
|
break;
|
|
case _get_3atoms:
|
|
if (regcopy_in(myregs, nofregs,Yap_regnotoreg(1) )) {
|
|
clause->Tag = cl->u.ccc.c1;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(2))) {
|
|
clause->Tag = cl->u.ccc.c2;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(3))) {
|
|
clause->Tag = cl->u.ccc.c3;
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,ccc);
|
|
}
|
|
break;
|
|
case _get_4atoms:
|
|
if (regcopy_in(myregs, nofregs, Yap_regnotoreg(1))) {
|
|
clause->Tag = cl->u.cccc.c1;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(2))) {
|
|
clause->Tag = cl->u.cccc.c2;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(3))) {
|
|
clause->Tag = cl->u.cccc.c3;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(4))) {
|
|
clause->Tag = cl->u.cccc.c4;
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,cccc);
|
|
}
|
|
break;
|
|
case _get_5atoms:
|
|
if (regcopy_in(myregs, nofregs, Yap_regnotoreg(1))) {
|
|
clause->Tag = cl->u.ccccc.c1;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(2))) {
|
|
clause->Tag = cl->u.ccccc.c2;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(3))) {
|
|
clause->Tag = cl->u.ccccc.c3;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(4))) {
|
|
clause->Tag = cl->u.ccccc.c4;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(5))) {
|
|
clause->Tag = cl->u.ccccc.c5;
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,ccccc);
|
|
}
|
|
break;
|
|
case _get_6atoms:
|
|
if (regcopy_in(myregs, nofregs, Yap_regnotoreg(1))) {
|
|
clause->Tag = cl->u.cccccc.c1;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(2))) {
|
|
clause->Tag = cl->u.cccccc.c2;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(3))) {
|
|
clause->Tag = cl->u.cccccc.c3;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(4))) {
|
|
clause->Tag = cl->u.cccccc.c4;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(5))) {
|
|
clause->Tag = cl->u.cccccc.c5;
|
|
return;
|
|
} else if (regcopy_in(myregs, nofregs, Yap_regnotoreg(6))) {
|
|
clause->Tag = cl->u.cccccc.c6;
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,cccccc);
|
|
}
|
|
break;
|
|
case _get_float:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xc.x)) {
|
|
clause->u.t_ptr = cl->u.xc.c;
|
|
clause->Tag = AbsAppl((CELL *)FunctorDouble);
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,xc);
|
|
}
|
|
break;
|
|
case _get_longint:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xc.x)) {
|
|
clause->u.t_ptr = cl->u.xc.c;
|
|
clause->Tag = AbsAppl((CELL *)FunctorLongInt);
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,xc);
|
|
}
|
|
break;
|
|
case _get_bigint:
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
/*
|
|
if (regcopy_in(myregs, nofregs, cl->u.xc.x)) {
|
|
clause->u.t_ptr = cl->u.xc.c;
|
|
#ifdef USE_GMP
|
|
clause->Tag = AbsAppl((CELL *)FunctorBigInt);
|
|
#else
|
|
clause->Tag = AbsAppl((CELL *)FunctorLongInt);
|
|
#endif
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,xc);
|
|
}
|
|
break;
|
|
*/
|
|
case _copy_idb_term:
|
|
case _unify_idb_term:
|
|
if (regno == 2) {
|
|
LogUpdClause *lcl = ClauseCodeToLogUpdClause(cl);
|
|
Term t = lcl->ClSource->Entry;
|
|
if (IsVarTerm(t)) {
|
|
clause->Tag = (CELL)NULL;
|
|
} else if (IsApplTerm(t)) {
|
|
CELL *pt = RepAppl(t);
|
|
|
|
clause->Tag = AbsAppl((CELL *)pt[0]);
|
|
clause->u.c_sreg = pt;
|
|
} else if (IsPairTerm(t)) {
|
|
CELL *pt = RepPair(t);
|
|
|
|
clause->Tag = AbsPair(NULL);
|
|
clause->u.c_sreg = pt-1;
|
|
} else {
|
|
clause->Tag = t;
|
|
}
|
|
} else {
|
|
clause->Tag = (CELL)NULL;
|
|
}
|
|
return;
|
|
case _put_atom:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xc.x) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.xc.x)) == 0 &&
|
|
!ycopy) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,xc);
|
|
}
|
|
break;
|
|
case _get_struct:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xf.x)) {
|
|
clause->u.WorkPC = NEXTOP(cl,xf);
|
|
clause->Tag = AbsAppl((CELL *)cl->u.xf.f);
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,xf);
|
|
}
|
|
break;
|
|
case _put_struct:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xf.x) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.xf.x)) == 0 &&
|
|
!ycopy) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,xf);
|
|
}
|
|
break;
|
|
case _glist_valy:
|
|
case _gl_void_vary:
|
|
case _gl_void_valy:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xy.x)) {
|
|
clause->u.WorkPC = cl;
|
|
clause->Tag = AbsPair(NULL);
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xy);
|
|
break;
|
|
case _unify_x_var:
|
|
case _unify_x_var_write:
|
|
case _unify_l_x_var:
|
|
case _unify_l_x_var_write:
|
|
if (regcopy_in(myregs, nofregs, cl->u.ox.x) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.ox.x)) == 0 &&
|
|
!ycopy) {
|
|
/* we just initialised the argument, so nothing can happen now */
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,ox);
|
|
break;
|
|
case _unify_x_val_write:
|
|
case _unify_x_val:
|
|
case _unify_l_x_val_write:
|
|
case _unify_l_x_val:
|
|
case _unify_x_loc_write:
|
|
case _unify_x_loc:
|
|
case _unify_l_x_loc_write:
|
|
case _unify_l_x_loc:
|
|
/* we're just done with the head of a list, but there
|
|
is nothing inside.
|
|
*/
|
|
cl = NEXTOP(cl,ox);
|
|
break;
|
|
case _save_pair_x_write:
|
|
case _save_pair_x:
|
|
case _save_appl_x_write:
|
|
case _save_appl_x:
|
|
if (regcopy_in(myregs, nofregs, cl->u.ox.x) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.ox.x)) == 0 &&
|
|
!ycopy) {
|
|
/* we just initialised the argument, so nothing can happen now */
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,ox);
|
|
break;
|
|
case _unify_x_var2:
|
|
case _unify_x_var2_write:
|
|
case _unify_l_x_var2:
|
|
case _unify_l_x_var2_write:
|
|
if (regcopy_in(myregs, nofregs, cl->u.oxx.xl) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.oxx.xl)) == 0 &&
|
|
!ycopy) {
|
|
/* we just initialised the argument, so nothing can happen now */
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
if (regcopy_in(myregs, nofregs, cl->u.oxx.xr) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.oxx.xr)) == 0 &&
|
|
!ycopy) {
|
|
/* we just initialised the argument, so nothing can happen now */
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,oxx);
|
|
break;
|
|
case _unify_y_var:
|
|
case _unify_y_var_write:
|
|
case _unify_l_y_var:
|
|
case _unify_l_y_var_write:
|
|
/* we're just done with the head of a list, but there
|
|
is nothing inside.
|
|
*/
|
|
if (cl->u.oy.y == ycopy) {
|
|
ycopy = 0; /* weird stuff, let's just reset ycopy */
|
|
if (nofregs == 0) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
}
|
|
cl = NEXTOP(cl,oy);
|
|
break;
|
|
case _unify_y_val_write:
|
|
case _unify_y_val:
|
|
case _unify_l_y_val_write:
|
|
case _unify_l_y_val:
|
|
case _unify_y_loc_write:
|
|
case _unify_y_loc:
|
|
case _unify_l_y_loc_write:
|
|
case _unify_l_y_loc:
|
|
/* we're just done with the head of a list, but there
|
|
is nothing inside.
|
|
*/
|
|
cl = NEXTOP(cl,oy);
|
|
break;
|
|
case _save_pair_y_write:
|
|
case _save_pair_y:
|
|
case _save_appl_y_write:
|
|
case _save_appl_y:
|
|
if (cl->u.oy.y == ycopy) {
|
|
ycopy = 0; /* weird stuff, let's just reset ycopy */
|
|
if (nofregs == 0) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
}
|
|
cl = NEXTOP(cl,oy);
|
|
break;
|
|
case _unify_void_write:
|
|
case _unify_void:
|
|
case _unify_l_void_write:
|
|
case _unify_l_void:
|
|
/* we're just done with the head of a list, but there
|
|
is nothing inside.
|
|
*/
|
|
cl = NEXTOP(cl,o);
|
|
break;
|
|
case _unify_list_write:
|
|
case _unify_list:
|
|
case _unify_l_list_write:
|
|
case _unify_l_list:
|
|
cl = NEXTOP(cl,o);
|
|
break;
|
|
case _unify_n_voids_write:
|
|
case _unify_n_voids:
|
|
case _unify_l_n_voids_write:
|
|
case _unify_l_n_voids:
|
|
cl = NEXTOP(cl,os);
|
|
break;
|
|
case _unify_atom_write:
|
|
case _unify_atom:
|
|
case _unify_l_atom_write:
|
|
case _unify_l_atom:
|
|
cl = NEXTOP(cl,oc);
|
|
break;
|
|
case _unify_float:
|
|
case _unify_l_float:
|
|
cl = NEXTOP(cl,oc);
|
|
break;
|
|
case _unify_longint:
|
|
case _unify_l_longint:
|
|
cl = NEXTOP(cl,oc);
|
|
break;
|
|
case _unify_bigint:
|
|
case _unify_l_bigint:
|
|
cl = NEXTOP(cl,oc);
|
|
break;
|
|
case _unify_n_atoms_write:
|
|
case _unify_n_atoms:
|
|
cl = NEXTOP(cl,osc);
|
|
break;
|
|
case _unify_struct_write:
|
|
case _unify_struct:
|
|
case _unify_l_struc_write:
|
|
case _unify_l_struc:
|
|
cl = NEXTOP(cl,of);
|
|
break;
|
|
case _write_n_voids:
|
|
case _pop_n:
|
|
cl = NEXTOP(cl,s);
|
|
break;
|
|
case _write_atom:
|
|
cl = NEXTOP(cl,c);
|
|
break;
|
|
case _write_n_atoms:
|
|
cl = NEXTOP(cl,sc);
|
|
break;
|
|
case _write_struct:
|
|
case _write_l_struc:
|
|
cl = NEXTOP(cl,f);
|
|
break;
|
|
case _call_c_wfail:
|
|
case _try_c:
|
|
case _try_userc:
|
|
case _retry_c:
|
|
case _retry_userc:
|
|
#ifdef CUT_C
|
|
case _cut_c:
|
|
case _cut_userc:
|
|
#endif
|
|
case _switch_on_type:
|
|
case _switch_list_nl:
|
|
case _switch_on_arg_type:
|
|
case _switch_on_sub_arg_type:
|
|
case _if_not_then:
|
|
case _switch_on_func:
|
|
case _switch_on_cons:
|
|
case _go_on_func:
|
|
case _go_on_cons:
|
|
case _if_func:
|
|
case _if_cons:
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
case _p_plus_vv:
|
|
case _p_minus_vv:
|
|
case _p_times_vv:
|
|
case _p_div_vv:
|
|
case _p_and_vv:
|
|
case _p_or_vv:
|
|
case _p_sll_vv:
|
|
case _p_slr_vv:
|
|
case _p_arg_vv:
|
|
case _p_func2s_vv:
|
|
case _p_func2f_xx:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xxx.x) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.xxx.x)) == 0 &&
|
|
!ycopy) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xxx);
|
|
break;
|
|
case _p_plus_vc:
|
|
case _p_minus_cv:
|
|
case _p_times_vc:
|
|
case _p_div_cv:
|
|
case _p_and_vc:
|
|
case _p_or_vc:
|
|
case _p_sll_vc:
|
|
case _p_slr_vc:
|
|
case _p_func2s_vc:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xxc.x) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.xxc.x)) == 0 &&
|
|
!ycopy) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xxc);
|
|
break;
|
|
case _p_div_vc:
|
|
case _p_sll_cv:
|
|
case _p_slr_cv:
|
|
case _p_arg_cv:
|
|
case _p_func2s_cv:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xcx.x) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.xcx.x)) == 0 &&
|
|
!ycopy) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xcx);
|
|
break;
|
|
case _p_func2f_xy:
|
|
if (regcopy_in(myregs, nofregs, cl->u.xyx.x) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.xyx.x)) == 0 &&
|
|
!ycopy) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xyx);
|
|
break;
|
|
case _p_plus_y_vv:
|
|
case _p_minus_y_vv:
|
|
case _p_times_y_vv:
|
|
case _p_div_y_vv:
|
|
case _p_and_y_vv:
|
|
case _p_or_y_vv:
|
|
case _p_sll_y_vv:
|
|
case _p_slr_y_vv:
|
|
case _p_arg_y_vv:
|
|
case _p_func2s_y_vv:
|
|
case _p_func2f_yx:
|
|
if (cl->u.yxx.y == ycopy) {
|
|
ycopy = 0; /* weird stuff, let's just reset ycopy */
|
|
if (nofregs == 0) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
}
|
|
cl = NEXTOP(cl,yxx);
|
|
break;
|
|
case _p_func2f_yy:
|
|
if (regcopy_in(myregs, nofregs, cl->u.yyx.x) &&
|
|
(nofregs = delete_regcopy(myregs, nofregs, cl->u.yyx.x)) == 0 &&
|
|
!ycopy) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,yyx);
|
|
break;
|
|
case _p_plus_y_vc:
|
|
case _p_minus_y_cv:
|
|
case _p_times_y_vc:
|
|
case _p_div_y_vc:
|
|
case _p_div_y_cv:
|
|
case _p_and_y_vc:
|
|
case _p_or_y_vc:
|
|
case _p_sll_y_vc:
|
|
case _p_slr_y_vc:
|
|
case _p_func2s_y_vc:
|
|
if (cl->u.yxc.y == ycopy) {
|
|
ycopy = 0; /* weird stuff, let's just reset ycopy */
|
|
if (nofregs == 0) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
}
|
|
cl = NEXTOP(cl,yxc);
|
|
break;
|
|
case _p_sll_y_cv:
|
|
case _p_slr_y_cv:
|
|
case _p_arg_y_cv:
|
|
case _p_func2s_y_cv:
|
|
if (cl->u.ycx.y == ycopy) {
|
|
ycopy = 0; /* weird stuff, let's just reset ycopy */
|
|
if (nofregs == 0) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
}
|
|
cl = NEXTOP(cl,ycx);
|
|
break;
|
|
case _call_bfunc_xx:
|
|
cl = NEXTOP(cl,llxx);
|
|
break;
|
|
case _call_bfunc_yx:
|
|
case _call_bfunc_xy:
|
|
cl = NEXTOP(cl,llxy);
|
|
break;
|
|
case _call_bfunc_yy:
|
|
cl = NEXTOP(cl,llyy);
|
|
break;
|
|
case _Ystop:
|
|
case _Nstop:
|
|
case _try_me:
|
|
case _retry_me:
|
|
case _trust_me:
|
|
case _profiled_retry_me:
|
|
case _profiled_trust_me:
|
|
case _count_retry_me:
|
|
case _count_trust_me:
|
|
case _spy_or_trymark:
|
|
case _try_and_mark:
|
|
case _profiled_retry_and_mark:
|
|
case _count_retry_and_mark:
|
|
case _retry_and_mark:
|
|
case _try_clause:
|
|
case _retry:
|
|
case _trust:
|
|
case _enter_lu_pred:
|
|
case _stale_lu_index:
|
|
#ifdef YAPOR
|
|
case _getwork:
|
|
case _getwork_seq:
|
|
case _sync:
|
|
#endif /* YAPOR */
|
|
#ifdef TABLING
|
|
case _table_try_single:
|
|
cl = NEXTOP(cl,ld);
|
|
break;
|
|
case _table_load_answer:
|
|
case _table_try_answer:
|
|
case _table_try_me:
|
|
case _table_retry_me:
|
|
case _table_trust_me:
|
|
case _table_try:
|
|
case _table_retry:
|
|
case _table_trust:
|
|
case _table_answer_resolution:
|
|
case _table_completion:
|
|
#endif /* TABLING */
|
|
case _enter_profiling:
|
|
case _count_call:
|
|
case _retry_profiled:
|
|
case _count_retry:
|
|
case _trust_logical_pred:
|
|
case _execute:
|
|
case _dexecute:
|
|
case _jump:
|
|
case _move_back:
|
|
case _skip:
|
|
case _jump_if_var:
|
|
case _try_in:
|
|
case _lock_lu:
|
|
case _unlock_lu:
|
|
case _try_clause2:
|
|
case _try_clause3:
|
|
case _try_clause4:
|
|
case _retry2:
|
|
case _retry3:
|
|
case _retry4:
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
case _jump_if_nonvar:
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
/* instructions type e */
|
|
case _trust_fail:
|
|
case _op_fail:
|
|
case _procceed:
|
|
#if !defined(YAPOR)
|
|
case _or_last:
|
|
#endif /* !YAPOR */
|
|
case _pop:
|
|
case _index_pred:
|
|
#if THREADS
|
|
case _thread_local:
|
|
#endif
|
|
case _expand_index:
|
|
case _expand_clauses:
|
|
case _undef_p:
|
|
case _spy_pred:
|
|
case _p_equal:
|
|
case _p_dif:
|
|
case _p_eq:
|
|
case _p_functor:
|
|
case _p_execute_tail:
|
|
case _index_dbref:
|
|
case _index_blob:
|
|
#ifdef YAPOR
|
|
case _getwork_first_time:
|
|
#endif /* YAPOR */
|
|
#ifdef TABLING
|
|
case _table_new_answer:
|
|
case _trie_do_null:
|
|
case _trie_trust_null:
|
|
case _trie_try_null:
|
|
case _trie_retry_null:
|
|
case _trie_do_var:
|
|
case _trie_trust_var:
|
|
case _trie_try_var:
|
|
case _trie_retry_var:
|
|
case _trie_do_val:
|
|
case _trie_trust_val:
|
|
case _trie_try_val:
|
|
case _trie_retry_val:
|
|
case _trie_do_atom:
|
|
case _trie_trust_atom:
|
|
case _trie_try_atom:
|
|
case _trie_retry_atom:
|
|
case _trie_do_list:
|
|
case _trie_trust_list:
|
|
case _trie_try_list:
|
|
case _trie_retry_list:
|
|
case _trie_do_struct:
|
|
case _trie_trust_struct:
|
|
case _trie_try_struct:
|
|
case _trie_retry_struct:
|
|
case _trie_do_extension:
|
|
case _trie_trust_extension:
|
|
case _trie_try_extension:
|
|
case _trie_retry_extension:
|
|
case _trie_do_float:
|
|
case _trie_trust_float:
|
|
case _trie_try_float:
|
|
case _trie_retry_float:
|
|
case _trie_do_long:
|
|
case _trie_trust_long:
|
|
case _trie_try_long:
|
|
case _trie_retry_long:
|
|
#endif /* TABLING */
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
#ifdef BEAM
|
|
case _run_eam:
|
|
// clause->Tag = (CELL)NULL;
|
|
cl = NEXTOP(cl,os);
|
|
break;
|
|
case _retry_eam:
|
|
cl = NEXTOP(cl,e);
|
|
break;
|
|
|
|
#endif
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
add_head_info(ClauseDef *clause, UInt regno)
|
|
{
|
|
wamreg iarg = Yap_regnotoreg(regno);
|
|
|
|
yamop *cl = clause->CurrentCode;
|
|
while (TRUE) {
|
|
op_numbers op = Yap_op_from_opcode(cl->opc);
|
|
switch (op) {
|
|
#ifdef BEAM
|
|
case _run_eam:
|
|
cl = NEXTOP(cl,os);
|
|
break;
|
|
#endif
|
|
case _get_list:
|
|
if (cl->u.x.x == iarg) {
|
|
clause->Tag = AbsPair(NULL);
|
|
clause->u.WorkPC = NEXTOP(cl,x);
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,x);
|
|
break;
|
|
case _get_x_var:
|
|
if (cl->u.xx.xl == iarg) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xx);
|
|
break;
|
|
case _get_x_val:
|
|
if (cl->u.xx.xl == iarg ||
|
|
cl->u.xx.xr == iarg) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xx);
|
|
break;
|
|
case _glist_valx:
|
|
case _gl_void_varx:
|
|
case _gl_void_valx:
|
|
if (cl->u.xx.xl == iarg) {
|
|
clause->u.WorkPC = cl;
|
|
clause->Tag = AbsPair(NULL);
|
|
return;
|
|
}
|
|
if (cl->u.xx.xr == iarg) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xx);
|
|
break;
|
|
case _get_y_val:
|
|
case _get_y_var:
|
|
if (cl->u.xx.xr == iarg) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,yx);
|
|
break;
|
|
case _get_atom:
|
|
if (cl->u.xc.x == iarg) {
|
|
clause->Tag = cl->u.xc.c;
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,xc);
|
|
}
|
|
break;
|
|
case _get_2atoms:
|
|
if (Yap_regnotoreg(1) == iarg) {
|
|
clause->Tag = cl->u.cc.c1;
|
|
return;
|
|
} else if (Yap_regnotoreg(2) == iarg) {
|
|
clause->Tag = cl->u.cc.c2;
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,cc);
|
|
}
|
|
break;
|
|
case _get_3atoms:
|
|
if (Yap_regnotoreg(1) == iarg) {
|
|
clause->Tag = cl->u.ccc.c1;
|
|
return;
|
|
} else if (Yap_regnotoreg(2) == iarg) {
|
|
clause->Tag = cl->u.ccc.c2;
|
|
return;
|
|
} else if (Yap_regnotoreg(3) == iarg) {
|
|
clause->Tag = cl->u.ccc.c3;
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,ccc);
|
|
}
|
|
break;
|
|
case _get_4atoms:
|
|
if (Yap_regnotoreg(1) == iarg) {
|
|
clause->Tag = cl->u.cccc.c1;
|
|
return;
|
|
} else if (Yap_regnotoreg(2) == iarg) {
|
|
clause->Tag = cl->u.cccc.c2;
|
|
return;
|
|
} else if (Yap_regnotoreg(3) == iarg) {
|
|
clause->Tag = cl->u.cccc.c3;
|
|
return;
|
|
} else if (Yap_regnotoreg(4) == iarg) {
|
|
clause->Tag = cl->u.cccc.c4;
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,cccc);
|
|
}
|
|
break;
|
|
case _get_5atoms:
|
|
if (Yap_regnotoreg(1) == iarg) {
|
|
clause->Tag = cl->u.ccccc.c1;
|
|
return;
|
|
} else if (Yap_regnotoreg(2) == iarg) {
|
|
clause->Tag = cl->u.ccccc.c2;
|
|
return;
|
|
} else if (Yap_regnotoreg(3) == iarg) {
|
|
clause->Tag = cl->u.ccccc.c3;
|
|
return;
|
|
} else if (Yap_regnotoreg(4) == iarg) {
|
|
clause->Tag = cl->u.ccccc.c4;
|
|
return;
|
|
} else if (Yap_regnotoreg(5) == iarg) {
|
|
clause->Tag = cl->u.ccccc.c5;
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,ccccc);
|
|
}
|
|
break;
|
|
case _get_6atoms:
|
|
if (Yap_regnotoreg(1) == iarg) {
|
|
clause->Tag = cl->u.cccccc.c1;
|
|
return;
|
|
} else if (Yap_regnotoreg(2) == iarg) {
|
|
clause->Tag = cl->u.cccccc.c2;
|
|
return;
|
|
} else if (Yap_regnotoreg(3) == iarg) {
|
|
clause->Tag = cl->u.cccccc.c3;
|
|
return;
|
|
} else if (Yap_regnotoreg(4) == iarg) {
|
|
clause->Tag = cl->u.cccccc.c4;
|
|
return;
|
|
} else if (Yap_regnotoreg(5) == iarg) {
|
|
clause->Tag = cl->u.cccccc.c5;
|
|
return;
|
|
} else if (Yap_regnotoreg(6) == iarg) {
|
|
clause->Tag = cl->u.cccccc.c6;
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,cccccc);
|
|
}
|
|
break;
|
|
case _get_float:
|
|
if (cl->u.xc.x == iarg) {
|
|
clause->u.t_ptr = cl->u.xc.c;
|
|
clause->Tag = AbsAppl((CELL *)FunctorDouble);
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,xc);
|
|
}
|
|
break;
|
|
case _get_longint:
|
|
if (cl->u.xc.x == iarg) {
|
|
clause->u.t_ptr = cl->u.xc.c;
|
|
clause->Tag = AbsAppl((CELL *)FunctorLongInt);
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,xc);
|
|
}
|
|
break;
|
|
case _get_bigint:
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
/*
|
|
if (cl->u.xc.x == iarg) {
|
|
clause->u.t_ptr = cl->u.xc.c;
|
|
#ifdef USE_GMP
|
|
clause->Tag = AbsAppl((CELL *)FunctorBigInt);
|
|
#else
|
|
clause->Tag = AbsAppl((CELL *)FunctorLongInt);
|
|
#endif
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,xc);
|
|
}
|
|
break;
|
|
*/
|
|
case _get_struct:
|
|
if (cl->u.xf.x == iarg) {
|
|
clause->u.WorkPC = NEXTOP(cl,xf);
|
|
clause->Tag = AbsAppl((CELL *)cl->u.xf.f);
|
|
return;
|
|
} else {
|
|
cl = NEXTOP(cl,xf);
|
|
}
|
|
break;
|
|
case _glist_valy:
|
|
case _gl_void_vary:
|
|
case _gl_void_valy:
|
|
if (cl->u.xy.x == iarg) {
|
|
clause->u.WorkPC = cl;
|
|
clause->Tag = AbsPair(NULL);
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,xy);
|
|
break;
|
|
case _unify_x_var:
|
|
case _unify_x_var_write:
|
|
case _unify_l_x_var:
|
|
case _unify_l_x_var_write:
|
|
case _unify_x_val_write:
|
|
case _unify_x_val:
|
|
case _unify_l_x_val_write:
|
|
case _unify_l_x_val:
|
|
case _unify_x_loc_write:
|
|
case _unify_x_loc:
|
|
case _unify_l_x_loc_write:
|
|
case _unify_l_x_loc:
|
|
case _save_pair_x_write:
|
|
case _save_pair_x:
|
|
case _save_appl_x_write:
|
|
case _save_appl_x:
|
|
if (cl->u.ox.x == iarg) {
|
|
/* we just initialised the argument, so nothing can happen now */
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,ox);
|
|
break;
|
|
case _unify_x_var2:
|
|
case _unify_x_var2_write:
|
|
case _unify_l_x_var2:
|
|
case _unify_l_x_var2_write:
|
|
if (cl->u.oxx.xl == iarg ||
|
|
cl->u.oxx.xr == iarg) {
|
|
/* we just initialised the argument, so nothing can happen now */
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,oxx);
|
|
break;
|
|
case _unify_y_var:
|
|
case _unify_y_var_write:
|
|
case _unify_l_y_var:
|
|
case _unify_l_y_var_write:
|
|
case _unify_y_val_write:
|
|
case _unify_y_val:
|
|
case _unify_l_y_val_write:
|
|
case _unify_l_y_val:
|
|
case _unify_y_loc_write:
|
|
case _unify_y_loc:
|
|
case _unify_l_y_loc_write:
|
|
case _unify_l_y_loc:
|
|
case _save_pair_y_write:
|
|
case _save_pair_y:
|
|
case _save_appl_y_write:
|
|
case _save_appl_y:
|
|
/* we're just done with the head of a list, but there
|
|
is nothing inside.
|
|
*/
|
|
cl = NEXTOP(cl,oy);
|
|
break;
|
|
case _unify_void_write:
|
|
case _unify_void:
|
|
case _unify_l_void_write:
|
|
case _unify_l_void:
|
|
/* we're just done with the head of a list, but there
|
|
is nothing inside.
|
|
*/
|
|
cl = NEXTOP(cl,o);
|
|
break;
|
|
case _unify_list_write:
|
|
case _unify_list:
|
|
case _unify_l_list_write:
|
|
case _unify_l_list:
|
|
cl = NEXTOP(cl,o);
|
|
break;
|
|
case _unify_n_voids_write:
|
|
case _unify_n_voids:
|
|
case _unify_l_n_voids_write:
|
|
case _unify_l_n_voids:
|
|
cl = NEXTOP(cl,os);
|
|
break;
|
|
case _unify_atom_write:
|
|
case _unify_atom:
|
|
case _unify_l_atom_write:
|
|
case _unify_l_atom:
|
|
cl = NEXTOP(cl,oc);
|
|
break;
|
|
case _unify_float:
|
|
case _unify_l_float:
|
|
cl = NEXTOP(cl,oc);
|
|
break;
|
|
case _unify_longint:
|
|
case _unify_l_longint:
|
|
cl = NEXTOP(cl,oc);
|
|
break;
|
|
case _unify_bigint:
|
|
case _unify_l_bigint:
|
|
cl = NEXTOP(cl,oc);
|
|
break;
|
|
case _unify_n_atoms_write:
|
|
case _unify_n_atoms:
|
|
cl = NEXTOP(cl,osc);
|
|
break;
|
|
case _unify_struct_write:
|
|
case _unify_struct:
|
|
case _unify_l_struc_write:
|
|
case _unify_l_struc:
|
|
cl = NEXTOP(cl,of);
|
|
break;
|
|
case _unify_idb_term:
|
|
case _copy_idb_term:
|
|
if (regno == 2) {
|
|
LogUpdClause *lcl = ClauseCodeToLogUpdClause(cl);
|
|
Term t = lcl->ClSource->Entry;
|
|
|
|
if (IsVarTerm(t)) {
|
|
clause->Tag = (CELL)NULL;
|
|
} else if (IsApplTerm(t)) {
|
|
CELL *pt = RepAppl(t);
|
|
|
|
clause->Tag = AbsAppl((CELL *)pt[0]);
|
|
if (IsExtensionFunctor(FunctorOfTerm(t))) {
|
|
clause->u.t_ptr = t;
|
|
} else {
|
|
clause->u.c_sreg = pt;
|
|
}
|
|
} else if (IsPairTerm(t)) {
|
|
CELL *pt = RepPair(t);
|
|
|
|
clause->Tag = AbsPair(NULL);
|
|
clause->u.c_sreg = pt-1;
|
|
} else {
|
|
clause->Tag = t;
|
|
}
|
|
} else {
|
|
clause->Tag = (CELL)NULL;
|
|
}
|
|
return;
|
|
default:
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
move_next(ClauseDef *clause, UInt regno)
|
|
{
|
|
yamop *cl = clause->CurrentCode;
|
|
wamreg wreg = Yap_regnotoreg(regno);
|
|
op_numbers op = Yap_op_from_opcode(cl->opc);
|
|
|
|
switch (op) {
|
|
case _p_db_ref_x:
|
|
case _p_float_x:
|
|
if (wreg == cl->u.xF.x) {
|
|
clause->CurrentCode = NEXTOP(cl,xF);
|
|
}
|
|
return;
|
|
case _get_list:
|
|
if (wreg == cl->u.x.x) {
|
|
clause->CurrentCode = NEXTOP(cl,x);
|
|
}
|
|
return;
|
|
case _glist_valx:
|
|
case _gl_void_vary:
|
|
case _gl_void_valy:
|
|
case _gl_void_varx:
|
|
case _gl_void_valx:
|
|
case _glist_valy:
|
|
return;
|
|
case _get_atom:
|
|
if (wreg == cl->u.xc.x) {
|
|
clause->CurrentCode = NEXTOP(cl,xc);
|
|
}
|
|
return;
|
|
case _get_2atoms:
|
|
return;
|
|
case _get_3atoms:
|
|
return;
|
|
case _get_4atoms:
|
|
return;
|
|
case _get_5atoms:
|
|
return;
|
|
case _get_6atoms:
|
|
return;
|
|
/*
|
|
matching is not guaranteed:
|
|
case _get_float:
|
|
case _get_longint:
|
|
case _get_bigint:
|
|
*/
|
|
case _get_struct:
|
|
if (wreg == cl->u.xf.x) {
|
|
clause->CurrentCode = NEXTOP(cl,xf);
|
|
}
|
|
default:
|
|
clause->CurrentCode = clause->Code;
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void
|
|
add_arg_info(ClauseDef *clause, PredEntry *ap, UInt argno)
|
|
{
|
|
yamop *cl;
|
|
if (ap->ModuleOfPred == IDB_MODULE) {
|
|
cl = clause->Code;
|
|
} else {
|
|
cl = clause->u.WorkPC;
|
|
}
|
|
while (TRUE) {
|
|
op_numbers op = Yap_op_from_opcode(cl->opc);
|
|
switch (op) {
|
|
case _glist_valx:
|
|
if (argno == 1) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
argno--;
|
|
cl = NEXTOP(cl,xx);
|
|
break;
|
|
case _gl_void_vary:
|
|
case _gl_void_valy:
|
|
case _gl_void_varx:
|
|
case _gl_void_valx:
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
case _glist_valy:
|
|
if (argno == 1) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
argno = 2;
|
|
cl = NEXTOP(cl,xy);
|
|
break;
|
|
case _unify_l_x_var:
|
|
case _unify_l_x_val:
|
|
case _unify_l_x_loc:
|
|
case _unify_x_var:
|
|
case _unify_x_val:
|
|
case _unify_x_loc:
|
|
if (argno == 1) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
argno--;
|
|
case _unify_l_x_var_write:
|
|
case _unify_l_x_val_write:
|
|
case _unify_l_x_loc_write:
|
|
case _unify_x_var_write:
|
|
case _unify_x_val_write:
|
|
case _unify_x_loc_write:
|
|
cl = NEXTOP(cl,ox);
|
|
break;
|
|
case _save_pair_x_write:
|
|
case _save_pair_x:
|
|
case _save_appl_x_write:
|
|
case _save_appl_x:
|
|
cl = NEXTOP(cl,ox);
|
|
break;
|
|
case _unify_l_x_var2:
|
|
case _unify_x_var2:
|
|
if (argno == 1 || argno == 2) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
argno -= 2;
|
|
case _unify_l_x_var2_write:
|
|
case _unify_x_var2_write:
|
|
cl = NEXTOP(cl,oxx);
|
|
break;
|
|
case _unify_y_var:
|
|
case _unify_y_val:
|
|
case _unify_y_loc:
|
|
case _unify_l_y_var:
|
|
case _unify_l_y_val:
|
|
case _unify_l_y_loc:
|
|
/* we're just done with the head of a list, but there
|
|
is nothing inside.
|
|
*/
|
|
if (argno == 1) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
argno--;
|
|
case _unify_y_var_write:
|
|
case _unify_y_val_write:
|
|
case _unify_y_loc_write:
|
|
case _unify_l_y_var_write:
|
|
case _unify_l_y_val_write:
|
|
case _unify_l_y_loc_write:
|
|
cl = NEXTOP(cl,oy);
|
|
break;
|
|
case _save_pair_y_write:
|
|
case _save_pair_y:
|
|
case _save_appl_y_write:
|
|
case _save_appl_y:
|
|
cl = NEXTOP(cl,oy);
|
|
break;
|
|
case _unify_l_void:
|
|
case _unify_void:
|
|
if (argno == 1) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
argno--;
|
|
case _unify_l_void_write:
|
|
case _unify_void_write:
|
|
cl = NEXTOP(cl,o);
|
|
break;
|
|
case _unify_list:
|
|
case _unify_l_list:
|
|
if (argno == 1) {
|
|
clause->Tag = AbsPair(NULL);
|
|
clause->u.WorkPC = NEXTOP(cl,o);
|
|
return;
|
|
}
|
|
argno += 1; /* 2-1: have two extra arguments to skip */
|
|
case _unify_list_write:
|
|
case _unify_l_list_write:
|
|
cl = NEXTOP(cl,o);
|
|
break;
|
|
case _unify_n_voids:
|
|
case _unify_l_n_voids:
|
|
if (argno <= cl->u.os.s) {
|
|
clause->Tag = (CELL)NULL;
|
|
return;
|
|
}
|
|
argno -= cl->u.os.s;
|
|
case _unify_n_voids_write:
|
|
case _unify_l_n_voids_write:
|
|
cl = NEXTOP(cl,os);
|
|
break;
|
|
case _unify_atom:
|
|
case _unify_l_atom:
|
|
if (argno == 1) {
|
|
clause->Tag = cl->u.oc.c;
|
|
return;
|
|
}
|
|
argno--;
|
|
case _unify_atom_write:
|
|
case _unify_l_atom_write:
|
|
cl = NEXTOP(cl,oc);
|
|
break;
|
|
case _unify_float:
|
|
case _unify_l_float:
|
|
if (argno == 1) {
|
|
clause->Tag = AbsAppl((CELL *)FunctorDouble);
|
|
clause->u.t_ptr = cl->u.oc.c;
|
|
return;
|
|
}
|
|
cl = NEXTOP(cl,oc);
|
|
argno--;
|
|
break;
|
|
case _unify_longint:
|
|
case _unify_l_longint:
|
|
if (argno == 1) {
|
|
clause->Tag = AbsAppl((CELL *)FunctorLongInt);
|
|
clause->u.t_ptr = cl->u.oc.c;
|
|
return;
|
|
}
|
|
argno--;
|
|
cl = NEXTOP(cl,oc);
|
|
break;
|
|
case _unify_bigint:
|
|
case _unify_l_bigint:
|
|
if (argno == 1) {
|
|
#ifdef USE_GMP
|
|
clause->Tag = AbsAppl((CELL *)FunctorBigInt);
|
|
#else
|
|
clause->Tag = AbsAppl((CELL *)FunctorLongInt);
|
|
#endif
|
|
clause->u.t_ptr = cl->u.oc.c;
|
|
return;
|
|
}
|
|
argno--;
|
|
break;
|
|
case _unify_n_atoms:
|
|
if (argno <= cl->u.osc.s) {
|
|
clause->Tag = cl->u.osc.c;
|
|
return;
|
|
}
|
|
argno -= cl->u.osc.s;
|
|
case _unify_n_atoms_write:
|
|
cl = NEXTOP(cl,osc);
|
|
break;
|
|
case _unify_struct:
|
|
case _unify_l_struc:
|
|
if (argno == 1) {
|
|
clause->Tag = AbsAppl((CELL *)cl->u.of.f);
|
|
clause->u.WorkPC = NEXTOP(cl,of);
|
|
return;
|
|
}
|
|
/* must skip next n arguments */
|
|
argno += cl->u.of.a-1;
|
|
case _unify_l_struc_write:
|
|
case _unify_struct_write:
|
|
cl = NEXTOP(cl,of);
|
|
break;
|
|
case _pop:
|
|
cl = NEXTOP(cl,e);
|
|
break;
|
|
case _pop_n:
|
|
cl = NEXTOP(cl,s);
|
|
break;
|
|
#ifdef BEAM
|
|
case _run_eam:
|
|
cl = NEXTOP(cl,os);
|
|
break;
|
|
#endif
|
|
case _unify_idb_term:
|
|
case _copy_idb_term:
|
|
{
|
|
Term t = clause->u.c_sreg[argno];
|
|
|
|
if (IsVarTerm(t)) {
|
|
clause->Tag = (CELL)NULL;
|
|
} else if (IsApplTerm(t)) {
|
|
CELL *pt = RepAppl(t);
|
|
|
|
clause->Tag = AbsAppl((CELL *)pt[0]);
|
|
if (IsExtensionFunctor(FunctorOfTerm(t))) {
|
|
clause->u.t_ptr = t;
|
|
} else {
|
|
clause->u.c_sreg = pt;
|
|
}
|
|
} else if (IsPairTerm(t)) {
|
|
CELL *pt = RepPair(t);
|
|
|
|
clause->Tag = AbsPair(NULL);
|
|
clause->u.c_sreg = pt-1;
|
|
} else {
|
|
clause->Tag = t;
|
|
}
|
|
}
|
|
return;
|
|
default:
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
skip_to_arg(ClauseDef *clause, PredEntry *ap, UInt argno, int at_point)
|
|
{
|
|
yamop *cl;
|
|
int done = FALSE;
|
|
if (ap->ModuleOfPred == IDB_MODULE) {
|
|
return;
|
|
} else {
|
|
cl = clause->CurrentCode;
|
|
}
|
|
|
|
if (!at_point) {
|
|
clause->CurrentCode = clause->Code;
|
|
return;
|
|
}
|
|
|
|
while (!done) {
|
|
op_numbers op = Yap_op_from_opcode(cl->opc);
|
|
switch (op) {
|
|
#ifdef BEAM
|
|
case _run_eam:
|
|
clause->CurrentCode = clause->Code;
|
|
return;
|
|
#endif
|
|
case _unify_void:
|
|
if (argno == 1) {
|
|
clause->CurrentCode = clause->Code;
|
|
return;
|
|
} else {
|
|
argno--;
|
|
}
|
|
case _unify_void_write:
|
|
cl = NEXTOP(cl,o);
|
|
break;
|
|
case _unify_list:
|
|
case _unify_l_list:
|
|
case _unify_atom:
|
|
case _unify_l_atom:
|
|
/*
|
|
unification is not guaranteed
|
|
case _unify_longint:
|
|
case _unify_l_longint:
|
|
case _unify_bigint:
|
|
case _unify_l_bigint:
|
|
case _unify_l_float:
|
|
*/
|
|
case _unify_struct:
|
|
case _unify_l_struc:
|
|
if (cl == clause->u.WorkPC) {
|
|
clause->CurrentCode = cl;
|
|
} else {
|
|
clause->CurrentCode = clause->Code;
|
|
}
|
|
return;
|
|
case _unify_list_write:
|
|
case _unify_l_list_write:
|
|
cl = NEXTOP(cl,o);
|
|
break;
|
|
case _unify_n_voids:
|
|
case _unify_l_n_voids:
|
|
if (argno <= cl->u.os.s) {
|
|
clause->CurrentCode = clause->Code;
|
|
return;
|
|
} else {
|
|
argno -= cl->u.os.s;
|
|
}
|
|
case _unify_n_voids_write:
|
|
case _unify_l_n_voids_write:
|
|
cl = NEXTOP(cl,os);
|
|
break;
|
|
case _unify_atom_write:
|
|
case _unify_l_atom_write:
|
|
cl = NEXTOP(cl,oc);
|
|
break;
|
|
case _unify_l_struc_write:
|
|
case _unify_struct_write:
|
|
cl = NEXTOP(cl,of);
|
|
break;
|
|
case _pop:
|
|
cl = NEXTOP(cl,e);
|
|
break;
|
|
case _pop_n:
|
|
cl = NEXTOP(cl,s);
|
|
break;
|
|
default:
|
|
clause->CurrentCode = clause->Code;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static int
|
|
valid_instructions(yamop *end, yamop *cl)
|
|
{
|
|
while (end > cl) {
|
|
op_numbers op = Yap_op_from_opcode(cl->opc);
|
|
switch (op) {
|
|
case _p_db_ref_x:
|
|
case _p_float_x:
|
|
cl = NEXTOP(cl,xF);
|
|
break;
|
|
case _get_list:
|
|
cl = NEXTOP(cl,x);
|
|
break;
|
|
case _get_atom:
|
|
cl = NEXTOP(cl,xc);
|
|
break;
|
|
case _get_2atoms:
|
|
cl = NEXTOP(cl,cc);
|
|
break;
|
|
case _get_3atoms:
|
|
cl = NEXTOP(cl,ccc);
|
|
break;
|
|
case _get_4atoms:
|
|
cl = NEXTOP(cl,cccc);
|
|
break;
|
|
case _get_5atoms:
|
|
cl = NEXTOP(cl,ccccc);
|
|
break;
|
|
case _get_6atoms:
|
|
cl = NEXTOP(cl,cccccc);
|
|
break;
|
|
case _get_struct:
|
|
cl = NEXTOP(cl,xf);
|
|
break;
|
|
case _unify_void:
|
|
case _unify_void_write:
|
|
case _unify_list:
|
|
case _unify_l_list:
|
|
case _unify_list_write:
|
|
case _unify_l_list_write:
|
|
cl = NEXTOP(cl,o);
|
|
break;
|
|
case _unify_atom:
|
|
case _unify_l_atom:
|
|
case _unify_atom_write:
|
|
case _unify_l_atom_write:
|
|
cl = NEXTOP(cl,oc);
|
|
break;
|
|
case _unify_struct:
|
|
case _unify_struct_write:
|
|
case _unify_l_struc:
|
|
case _unify_l_struc_write:
|
|
cl = NEXTOP(cl,of);
|
|
break;
|
|
case _unify_n_voids:
|
|
case _unify_l_n_voids:
|
|
case _unify_n_voids_write:
|
|
case _unify_l_n_voids_write:
|
|
cl = NEXTOP(cl,os);
|
|
break;
|
|
case _pop:
|
|
cl = NEXTOP(cl,e);
|
|
break;
|
|
case _pop_n:
|
|
cl = NEXTOP(cl,s);
|
|
break;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static UInt
|
|
groups_in(ClauseDef *min, ClauseDef *max, GroupDef *grp)
|
|
{
|
|
UInt groups = 0;
|
|
|
|
while(min <= max) {
|
|
grp->FirstClause = min;
|
|
grp->AtomClauses = 0;
|
|
grp->PairClauses = 0;
|
|
grp->StructClauses = 0;
|
|
grp->TestClauses = 0;
|
|
if (min->Tag == (_var+1)*sizeof(CELL)) {
|
|
min++;
|
|
continue;
|
|
}
|
|
/* only do this for the first clauses in a group */
|
|
if (IsVarTerm(min->Tag)) {
|
|
ClauseDef *clp = min+1;
|
|
|
|
grp->VarClauses = 1;
|
|
do {
|
|
if (clp > max ||
|
|
!IsVarTerm(clp->Tag)) {
|
|
grp->LastClause = (min = clp)-1;
|
|
break;
|
|
}
|
|
if (clp->Tag != (_var+1)*sizeof(CELL))
|
|
grp->VarClauses++;
|
|
clp++;
|
|
} while (TRUE);
|
|
} else {
|
|
grp->VarClauses = 0;
|
|
do {
|
|
restart_loop:
|
|
if (IsAtomTerm(min->Tag) || IsIntTerm(min->Tag)) {
|
|
grp->AtomClauses++;
|
|
} else if (IsPairTerm(min->Tag)) {
|
|
grp->PairClauses++;
|
|
} else if (IsApplTerm(min->Tag)) {
|
|
grp->StructClauses++;
|
|
} else {
|
|
grp->TestClauses++;
|
|
}
|
|
min++;
|
|
} while (min <= max &&
|
|
(!IsVarTerm(min->Tag)));
|
|
if (min <= max && min->Tag == (_var+1)*sizeof(CELL)) {
|
|
min++;
|
|
if (min < max)
|
|
goto restart_loop;
|
|
}
|
|
grp->LastClause = min-1;
|
|
}
|
|
groups++;
|
|
grp++;
|
|
}
|
|
return groups;
|
|
}
|
|
|
|
static UInt
|
|
new_label(void)
|
|
{
|
|
UInt lbl = labelno;
|
|
labelno += 2;
|
|
return lbl;
|
|
}
|
|
|
|
static void
|
|
emit_trust(ClauseDef *cl, struct intermediates *cint, UInt nxtlbl, int clauses)
|
|
{
|
|
PredEntry *ap = cint->CurrentPred;
|
|
yamop *clcode = cl->Code;
|
|
|
|
if (ap->PredFlags & TabledPredFlag)
|
|
clcode = NEXTOP(clcode, ld);
|
|
if (ap->PredFlags & ProfiledPredFlag) {
|
|
Yap_emit(retry_profiled_op, Unsigned(ap), Zero, cint);
|
|
}
|
|
if (ap->PredFlags & CountPredFlag) {
|
|
Yap_emit(count_retry_op, Unsigned(ap), Zero, cint);
|
|
}
|
|
if (clauses == 0) {
|
|
Yap_emit(trust_op, (CELL)clcode, has_cut(cl->CurrentCode) , cint);
|
|
} else {
|
|
Yap_emit(retry_op, (CELL)clcode, (clauses << 1) | has_cut(cl->CurrentCode) , cint);
|
|
Yap_emit(jumpi_op, nxtlbl, Zero, cint);
|
|
}
|
|
}
|
|
|
|
static void
|
|
emit_retry(ClauseDef *cl, struct intermediates *cint, int clauses)
|
|
{
|
|
PredEntry *ap = cint->CurrentPred;
|
|
yamop *clcode = cl->Code;
|
|
|
|
if (ap->PredFlags & TabledPredFlag)
|
|
clcode = NEXTOP(clcode, ld);
|
|
if (ap->PredFlags & ProfiledPredFlag) {
|
|
Yap_emit(retry_profiled_op, Unsigned(ap), Zero, cint);
|
|
}
|
|
if (ap->PredFlags & CountPredFlag) {
|
|
Yap_emit(count_retry_op, Unsigned(ap), Zero, cint);
|
|
}
|
|
Yap_emit(retry_op, (CELL)clcode, (clauses << 1) | has_cut(cl->CurrentCode), cint);
|
|
}
|
|
|
|
static compiler_vm_op
|
|
emit_optry(int var_group, int first, int clauses, int clleft, PredEntry *ap)
|
|
{
|
|
/* var group */
|
|
if (var_group || clauses == 0) {
|
|
if (first) {
|
|
return try_op;
|
|
} else if (clleft+clauses) {
|
|
return retry_op;
|
|
} else {
|
|
return trust_op;
|
|
}
|
|
} else if (clleft == 0) {
|
|
#ifdef TABLING
|
|
if (ap->PredFlags & TabledPredFlag && !first) {
|
|
/* we never actually get to remove the last choice-point in this case */
|
|
return retry_op;
|
|
} else
|
|
#endif /* TABLING */
|
|
{
|
|
/* last group */
|
|
return try_op;
|
|
}
|
|
} else {
|
|
/* nonvar group */
|
|
return try_in_op;
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
emit_try(ClauseDef *cl, struct intermediates *cint, int var_group, int first, int clauses, int clleft, UInt nxtlbl)
|
|
{
|
|
PredEntry *ap = cint->CurrentPred;
|
|
yamop *clcode = cl->CurrentCode;
|
|
compiler_vm_op comp_op;
|
|
|
|
if (ap->PredFlags & TabledPredFlag) {
|
|
clcode = NEXTOP(cl->Code, ld);
|
|
}
|
|
|
|
comp_op = emit_optry(var_group, first, clauses, clleft, cint->CurrentPred);
|
|
Yap_emit(comp_op, (CELL)clcode, ((clauses+clleft) << 1) | has_cut(cl->CurrentCode), cint);
|
|
}
|
|
|
|
static TypeSwitch *
|
|
emit_type_switch(compiler_vm_op op, struct intermediates *cint)
|
|
{
|
|
return (TypeSwitch *)Yap_emit_extra_size(op, 0, sizeof(TypeSwitch), cint);
|
|
}
|
|
|
|
|
|
static yamop *
|
|
emit_switch_space(UInt n, UInt item_size, struct intermediates *cint)
|
|
{
|
|
PredEntry *ap = cint->CurrentPred;
|
|
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
UInt sz = sizeof(LogUpdIndex)+n*item_size;
|
|
LogUpdIndex *cl = (LogUpdIndex *)Yap_AllocCodeSpace(sz);
|
|
if (cl == NULL) {
|
|
/* grow stack */
|
|
save_machine_regs();
|
|
longjmp(cint->CompilerBotch,2);
|
|
}
|
|
cl->ClFlags = SwitchTableMask|LogUpdMask;
|
|
cl->ClSize = sz;
|
|
cl->ClPred = cint->CurrentPred;
|
|
/* insert into code chain */
|
|
#ifdef LOW_PROF
|
|
if (ProfilerOn &&
|
|
Yap_OffLineProfiler) {
|
|
Yap_inform_profiler_of_clause(cl->ClCode, (yamop*)((CODEADDR)cl+sz), ap, 1);
|
|
}
|
|
#endif /* LOW_PROF */
|
|
return cl->ClCode;
|
|
} else {
|
|
UInt sz = sizeof(StaticIndex)+n*item_size;
|
|
StaticIndex *cl = (StaticIndex *)Yap_AllocCodeSpace(sz);
|
|
if (cl == NULL) {
|
|
/* grow stack */
|
|
save_machine_regs();
|
|
longjmp(cint->CompilerBotch,2);
|
|
}
|
|
cl->ClFlags = SwitchTableMask;
|
|
cl->ClSize = sz;
|
|
cl->ClPred = cint->CurrentPred;
|
|
#ifdef LOW_PROF
|
|
if (ProfilerOn &&
|
|
Yap_OffLineProfiler) {
|
|
Yap_inform_profiler_of_clause(cl->ClCode, (yamop*)((CODEADDR)cl+sz), ap, 1);
|
|
}
|
|
#endif /* LOW_PROF */
|
|
return cl->ClCode;
|
|
/* insert into code chain */
|
|
}
|
|
}
|
|
|
|
static AtomSwiEntry *
|
|
emit_cswitch(int n, UInt fail_l, struct intermediates *cint)
|
|
{
|
|
compiler_vm_op op;
|
|
AtomSwiEntry *target;
|
|
|
|
if (n > MIN_HASH_ENTRIES) {
|
|
int cases = MIN_HASH_ENTRIES, i;
|
|
n += 1+n/4;
|
|
while (cases < n) cases *= 2;
|
|
n = cases;
|
|
op = switch_c_op;
|
|
target = (AtomSwiEntry *)emit_switch_space(n, sizeof(AtomSwiEntry), cint);
|
|
for (i=0; i<n; i++) {
|
|
target[i].Tag = Zero;
|
|
target[i].Label = fail_l;
|
|
}
|
|
Yap_emit(op, Unsigned(n), (CELL)target, cint);
|
|
} else {
|
|
UInt i;
|
|
|
|
op = if_c_op;
|
|
target = (AtomSwiEntry *)emit_switch_space(n+1, sizeof(AtomSwiEntry), cint);
|
|
|
|
for (i=0; i<n; i++) {
|
|
target[i].Label = fail_l;
|
|
}
|
|
target[n].Tag = Zero;
|
|
target[n].Label = fail_l;
|
|
Yap_emit(op, Unsigned(n), (CELL)target, cint);
|
|
}
|
|
return target;
|
|
}
|
|
|
|
static AtomSwiEntry *
|
|
lookup_c_hash(Term t, yamop *tab, COUNT entries)
|
|
{
|
|
AtomSwiEntry *cebase = (AtomSwiEntry *)tab;
|
|
int hash, d;
|
|
AtomSwiEntry *centry;
|
|
|
|
hash = (t >> HASH_SHIFT) & (entries-1);
|
|
centry = cebase + hash;
|
|
d = (entries-1) & (t|1);
|
|
while (centry->Tag != t) {
|
|
if (centry->Tag == 0L)
|
|
return centry;
|
|
hash = (hash + d) & (entries-1);
|
|
centry = cebase + hash;
|
|
}
|
|
return centry;
|
|
}
|
|
|
|
static AtomSwiEntry *
|
|
fetch_centry(AtomSwiEntry *cebase, Term wt, int i, int n)
|
|
{
|
|
if (n > MIN_HASH_ENTRIES) {
|
|
int cases = MIN_HASH_ENTRIES;
|
|
|
|
n += 1+n/4;
|
|
while (cases < n) cases *= 2;
|
|
return lookup_c_hash(wt, (yamop *)cebase, cases);
|
|
} else {
|
|
return cebase + i;
|
|
}
|
|
}
|
|
|
|
static FuncSwiEntry *
|
|
emit_fswitch(int n, UInt fail_l, struct intermediates *cint)
|
|
{
|
|
compiler_vm_op op;
|
|
FuncSwiEntry *target;
|
|
|
|
if (n > MIN_HASH_ENTRIES) {
|
|
int cases = MIN_HASH_ENTRIES, i;
|
|
n += 1+n/4;
|
|
while (cases < n) cases *= 2;
|
|
n = cases;
|
|
op = switch_f_op;
|
|
target = (FuncSwiEntry *)emit_switch_space(n, sizeof(FuncSwiEntry), cint);
|
|
for (i=0; i<n; i++) {
|
|
target[i].Tag = NULL;
|
|
target[i].Label = fail_l;
|
|
}
|
|
Yap_emit(op, Unsigned(n), (CELL)target, cint);
|
|
} else {
|
|
UInt i;
|
|
|
|
op = if_f_op;
|
|
target = (FuncSwiEntry *)emit_switch_space(n+1, sizeof(FuncSwiEntry), cint);
|
|
for (i=0; i<n; i++) {
|
|
target[i].Label = fail_l;
|
|
}
|
|
target[n].Tag = NULL;
|
|
target[n].Label = fail_l;
|
|
Yap_emit(op, Unsigned(n), (CELL)target, cint);
|
|
}
|
|
return target;
|
|
}
|
|
|
|
static FuncSwiEntry *
|
|
lookup_f_hash(Functor f, yamop *tab, COUNT entries)
|
|
{
|
|
FuncSwiEntry *febase = (FuncSwiEntry *)tab;
|
|
int hash, d;
|
|
FuncSwiEntry *fentry;
|
|
Term wt = (Term)f;
|
|
|
|
hash = (wt >> HASH_SHIFT) & (entries-1);
|
|
fentry = febase + hash;
|
|
d = (entries-1) & (wt|1);
|
|
while (fentry->Tag != f) {
|
|
if (fentry->Tag == NULL)
|
|
return fentry;
|
|
hash = (hash + d) & (entries-1);
|
|
fentry = febase + hash;
|
|
}
|
|
return fentry;
|
|
}
|
|
|
|
static FuncSwiEntry *
|
|
fetch_fentry(FuncSwiEntry *febase, Functor ft, int i, int n)
|
|
{
|
|
if (n > MIN_HASH_ENTRIES) {
|
|
int cases = MIN_HASH_ENTRIES;
|
|
|
|
n += 1+n/4;
|
|
while (cases < n) cases *= 2;
|
|
return lookup_f_hash(ft, (yamop *)febase, cases);
|
|
} else {
|
|
return febase + i;
|
|
}
|
|
}
|
|
|
|
/* we assume there is at least one clause, that is, c0 < cf */
|
|
static UInt
|
|
do_var_clauses(ClauseDef *c0, ClauseDef *cf, int var_group, struct intermediates *cint, int first, int clleft, UInt nxtlbl, UInt argno0) {
|
|
UInt labl;
|
|
UInt labl_dyn0 = 0, labl_dynf = 0;
|
|
|
|
labl = new_label();
|
|
Yap_emit(label_op, labl, Zero, cint);
|
|
/*
|
|
add expand_node if var_group == TRUE (jump on var) ||
|
|
var_group == FALSE (leaf node)
|
|
*/
|
|
if (first &&
|
|
cint->CurrentPred->PredFlags & LogUpdatePredFlag) {
|
|
UInt ncls;
|
|
labl_dyn0 = new_label();
|
|
if (clleft)
|
|
labl_dynf = labl_dyn0;
|
|
else
|
|
labl_dynf = new_label();
|
|
if (clleft == 0) /* trust*/
|
|
ncls = (cf-c0)+1;
|
|
else
|
|
ncls = 0;
|
|
Yap_emit_3ops(enter_lu_op, labl_dyn0, labl_dynf, ncls, cint);
|
|
/* get some placeholders */
|
|
Yap_emit(jump_op, labl_dyn0, Zero, cint);
|
|
Yap_emit(jump_op, labl_dyn0, Zero, cint);
|
|
Yap_emit(jump_op, labl_dyn0, Zero, cint);
|
|
Yap_emit(jump_op, labl_dyn0, Zero, cint);
|
|
Yap_emit(label_op, labl_dyn0, Zero, cint);
|
|
}
|
|
if (c0 == cf) {
|
|
emit_try(c0, cint, var_group, first, 0, clleft, nxtlbl);
|
|
} else {
|
|
|
|
if (c0 < cf) {
|
|
emit_try(c0, cint, var_group, first, cf-c0, clleft, nxtlbl);
|
|
}
|
|
c0++;
|
|
while (c0 < cf) {
|
|
emit_retry(c0, cint, clleft+(cf-c0));
|
|
c0++;
|
|
}
|
|
if (c0 == cf) {
|
|
emit_trust(c0, cint, nxtlbl, clleft);
|
|
if (!clleft &&
|
|
cint->CurrentPred->PredFlags & LogUpdatePredFlag) {
|
|
Yap_emit(label_op, labl_dynf, Zero, cint);
|
|
/* get some placeholders */
|
|
Yap_emit(jump_op, labl_dynf, Zero, cint);
|
|
Yap_emit(jump_op, labl_dynf, Zero, cint);
|
|
Yap_emit(jump_op, labl_dynf, Zero, cint);
|
|
Yap_emit(jump_op, labl_dynf, Zero, cint);
|
|
}
|
|
}
|
|
}
|
|
return labl;
|
|
}
|
|
|
|
static UInt
|
|
do_var_group(GroupDef *grp, struct intermediates *cint, int var_group, int first, int clleft, UInt nxtlbl, UInt argno0) {
|
|
return do_var_clauses(grp->FirstClause, grp->LastClause, var_group, cint, first, clleft, nxtlbl, argno0);
|
|
}
|
|
|
|
|
|
/* count the number of different constants */
|
|
static UInt
|
|
count_consts(GroupDef *grp)
|
|
{
|
|
Term current = MkAtomTerm(AtomFoundVar);
|
|
UInt i = 0;
|
|
ClauseDef *cl = grp->FirstClause;
|
|
|
|
while (IsAtomTerm(cl->Tag) || IsIntTerm(cl->Tag)) {
|
|
if (current != cl->Tag) {
|
|
i++;
|
|
current = cl->Tag;
|
|
}
|
|
if (cl == grp->LastClause) {
|
|
return i;
|
|
}
|
|
cl++;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
static UInt
|
|
count_blobs(GroupDef *grp)
|
|
{
|
|
Term current = MkAtomTerm(AtomFoundVar);
|
|
UInt i = 0;
|
|
ClauseDef *cl = grp->FirstClause;
|
|
|
|
while (TRUE) {
|
|
if (current != cl->Tag) {
|
|
i++;
|
|
current = cl->Tag;
|
|
}
|
|
if (cl == grp->LastClause) {
|
|
return i;
|
|
}
|
|
cl++;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
/* count the number of different constants */
|
|
static UInt
|
|
count_funcs(GroupDef *grp)
|
|
{
|
|
Term current = MkAtomTerm(AtomFoundVar);
|
|
UInt i = 0;
|
|
ClauseDef *cl = grp->FirstClause;
|
|
|
|
while (IsApplTerm(cl->Tag)) {
|
|
if (current != cl->Tag) {
|
|
i++;
|
|
current = cl->Tag;
|
|
}
|
|
if (cl == grp->LastClause) {
|
|
return i;
|
|
}
|
|
cl++;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
static UInt
|
|
emit_single_switch_case(ClauseDef *min, struct intermediates *cint, int first, int clleft, UInt nxtlbl)
|
|
{
|
|
#ifdef TABLING
|
|
if (cint->CurrentPred->PredFlags & TabledPredFlag) {
|
|
/* with tabling we don't clean trust at the very end of computation.
|
|
*/
|
|
if (clleft == 0 && !first) {
|
|
UInt lbl = new_label();
|
|
|
|
Yap_emit(label_op, lbl, Zero, cint);
|
|
/* vsc: should check if this condition is sufficient */
|
|
emit_trust(min, cint, nxtlbl, clleft);
|
|
return lbl;
|
|
} else if (clleft) {
|
|
/*
|
|
if we still have clauses left, means we already created a CP,
|
|
so I should avoid creating again
|
|
*/
|
|
return (UInt)NEXTOP(min->CurrentCode,ld);
|
|
}
|
|
}
|
|
#endif /* TABLING */
|
|
return (UInt)(min->CurrentCode);
|
|
}
|
|
|
|
static UInt
|
|
suspend_indexing(ClauseDef *min, ClauseDef *max, PredEntry *ap, struct intermediates *cint)
|
|
{
|
|
UInt tcls = ap->cs.p_code.NOfClauses;
|
|
UInt cls = (max-min)+1;
|
|
|
|
if (cint->expand_block &&
|
|
cint->expand_block != (yamop *)(&(ap->cs.p_code.ExpandCode)) &&
|
|
cint->expand_block->u.sp.s2 < 2*(max-min)) {
|
|
cint->expand_block->u.sp.s3++;
|
|
return (UInt)(cint->expand_block);
|
|
}
|
|
if (cls < tcls/8) {
|
|
yamop *ncode;
|
|
yamop **st;
|
|
UInt tels;
|
|
UInt sz;
|
|
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
/* give it some slack */
|
|
tels = cls + 4;
|
|
} else {
|
|
tels = cls;
|
|
}
|
|
sz = (UInt)NEXTOP((yamop *)NULL,sp)+tels*sizeof(yamop *), sz;
|
|
#if DEBUG
|
|
Yap_expand_clauses_sz += sz;
|
|
#endif
|
|
if ((ncode = (yamop *)Yap_AllocCodeSpace(sz)) == NULL) {
|
|
save_machine_regs();
|
|
longjmp(cint->CompilerBotch, 2);
|
|
}
|
|
#ifdef LOW_PROF
|
|
if (ProfilerOn &&
|
|
Yap_OffLineProfiler) {
|
|
Yap_inform_profiler_of_clause(ncode, NEXTOP(ncode,sp), ap, 1);
|
|
}
|
|
#endif /* LOW_PROF */
|
|
/* create an expand_block */
|
|
ncode->opc = Yap_opcode(_expand_clauses);
|
|
ncode->u.sp.p = ap;
|
|
ncode->u.sp.s1 = tels;
|
|
ncode->u.sp.s2 = cls;
|
|
ncode->u.sp.s3 = 1;
|
|
st = (yamop **)NEXTOP(ncode,sp);
|
|
while (min <= max) {
|
|
*st++ = min->Code;
|
|
min++;
|
|
}
|
|
while (cls < tels) {
|
|
*st++ = NULL;
|
|
cls++;
|
|
}
|
|
LOCK(ExpandClausesListLock);
|
|
ncode->u.sp.snext = ExpandClausesFirst;
|
|
ncode->u.sp.sprev = NULL;
|
|
if (ExpandClausesFirst)
|
|
ExpandClausesFirst->u.sp.sprev = ncode;
|
|
ExpandClausesFirst = ncode;
|
|
if (ExpandClausesLast == NULL)
|
|
ExpandClausesLast = ncode;
|
|
UNLOCK(ExpandClausesListLock);
|
|
return (UInt)ncode;
|
|
}
|
|
return (UInt)&(ap->cs.p_code.ExpandCode);
|
|
}
|
|
|
|
static void
|
|
recover_ecls_block(yamop *ipc)
|
|
{
|
|
ipc->u.sp.s3--;
|
|
if (!ipc->u.sp.s3) {
|
|
LOCK(ExpandClausesListLock);
|
|
if (ExpandClausesFirst == ipc)
|
|
ExpandClausesFirst = ipc->u.sp.snext;
|
|
if (ExpandClausesLast == ipc) {
|
|
ExpandClausesLast = ipc->u.sp.sprev;
|
|
}
|
|
if (ipc->u.sp.sprev) {
|
|
ipc->u.sp.sprev->u.sp.snext = ipc->u.sp.snext;
|
|
}
|
|
if (ipc->u.sp.snext) {
|
|
ipc->u.sp.snext->u.sp.sprev = ipc->u.sp.sprev;
|
|
}
|
|
UNLOCK(ExpandClausesListLock);
|
|
#if DEBUG
|
|
Yap_expand_clauses_sz -= (UInt)(NEXTOP((yamop *)NULL,sp))+ipc->u.sp.s1*sizeof(yamop *);
|
|
#endif
|
|
/* no dangling pointers for gprof */
|
|
Yap_InformOfRemoval((CODEADDR)ipc);
|
|
Yap_FreeCodeSpace((char *)ipc);
|
|
}
|
|
}
|
|
|
|
static UInt
|
|
do_var_entries(GroupDef *grp, Term t, struct intermediates *cint, UInt argno, int first, int clleft, UInt nxtlbl){
|
|
PredEntry *ap = cint->CurrentPred;
|
|
|
|
if (!IsVarTerm(t) || t != 0L) {
|
|
return suspend_indexing(grp->FirstClause, grp->LastClause, ap, cint);
|
|
}
|
|
return do_var_group(grp, cint, FALSE, first, clleft, nxtlbl, ap->ArityOfPE+1);
|
|
}
|
|
|
|
static UInt
|
|
do_consts(GroupDef *grp, Term t, struct intermediates *cint, int compound_term, CELL *sreg, UInt arity, int last_arg, UInt argno, int first, UInt nxtlbl, int clleft, CELL *top)
|
|
{
|
|
UInt n;
|
|
ClauseDef *min = grp->FirstClause;
|
|
UInt i;
|
|
UInt lbl;
|
|
/* generate a switch */
|
|
AtomSwiEntry *cs;
|
|
PredEntry *ap = cint->CurrentPred;
|
|
|
|
if (!IsAtomTerm(min->Tag) && !IsIntTerm(min->Tag)) {
|
|
/* no clauses, just skip */
|
|
return nxtlbl;
|
|
}
|
|
n = count_consts(grp);
|
|
lbl = new_label();
|
|
Yap_emit(label_op, lbl, Zero, cint);
|
|
cs = emit_cswitch(n, (UInt)FAILCODE, cint);
|
|
for (i = 0; i < n; i++) {
|
|
AtomSwiEntry *ics;
|
|
ClauseDef *max = min;
|
|
|
|
ics = fetch_centry(cs, min->Tag, i, n);
|
|
ics->Tag = min->Tag;
|
|
while ((max+1)->Tag == min->Tag &&
|
|
max != grp->LastClause) max++;
|
|
if (min != max) {
|
|
if (sreg != NULL) {
|
|
if (ap->PredFlags & LogUpdatePredFlag && max > min)
|
|
ics->Label = suspend_indexing(min, max, ap, cint);
|
|
else
|
|
ics->Label = do_compound_index(min, max, sreg, cint, compound_term, arity, argno, nxtlbl, first, last_arg, clleft, top, TRUE);
|
|
} else if (ap->PredFlags & LogUpdatePredFlag) {
|
|
ics->Label = suspend_indexing(min, max, cint->CurrentPred, cint);
|
|
} else {
|
|
ics->Label = do_index(min, max, cint, argno+1, nxtlbl, first, clleft, top);
|
|
}
|
|
} else {
|
|
ics->Label = do_index(min, max, cint, argno+1, nxtlbl, first, clleft, top);
|
|
}
|
|
grp->FirstClause = min = max+1;
|
|
}
|
|
return lbl;
|
|
}
|
|
|
|
static void
|
|
do_blobs(GroupDef *grp, Term t, struct intermediates *cint, UInt argno, int first, UInt nxtlbl, int clleft, CELL *top)
|
|
{
|
|
UInt n;
|
|
ClauseDef *min = grp->FirstClause;
|
|
UInt i;
|
|
/* generate a switch */
|
|
AtomSwiEntry *cs;
|
|
PredEntry *ap = cint->CurrentPred;
|
|
|
|
n = count_blobs(grp);
|
|
cs = emit_cswitch(n, nxtlbl, cint);
|
|
for (i = 0; i < n; i++) {
|
|
AtomSwiEntry *ics;
|
|
ClauseDef *max = min;
|
|
|
|
ics = fetch_centry(cs, min->Tag, i, n);
|
|
ics->Tag = min->Tag;
|
|
while ((max+1)->Tag == min->Tag &&
|
|
max != grp->LastClause) max++;
|
|
if (min != max &&
|
|
(ap->PredFlags & LogUpdatePredFlag)) {
|
|
ics->Label = suspend_indexing(min, max, ap, cint);
|
|
} else {
|
|
ics->Label = do_index(min, max, cint, argno+1, nxtlbl, first, clleft, top);
|
|
}
|
|
grp->FirstClause = min = max+1;
|
|
}
|
|
}
|
|
|
|
static UInt
|
|
do_funcs(GroupDef *grp, Term t, struct intermediates *cint, UInt argno, int first, int last_arg, UInt nxtlbl, int clleft, CELL *top)
|
|
{
|
|
UInt n = count_funcs(grp);
|
|
ClauseDef *min = grp->FirstClause;
|
|
UInt i;
|
|
FuncSwiEntry *fs;
|
|
UInt lbl;
|
|
|
|
if (min > grp->LastClause || n == 0) {
|
|
/* no clauses, just skip */
|
|
return nxtlbl;
|
|
}
|
|
lbl = new_label();
|
|
Yap_emit(label_op, lbl, Zero, cint);
|
|
/* generate a switch */
|
|
fs = emit_fswitch(n, (UInt)FAILCODE, cint);
|
|
for (i = 0; i < n ; i++) {
|
|
Functor f = (Functor)RepAppl(min->Tag);
|
|
FuncSwiEntry *ifs;
|
|
ClauseDef *max = min;
|
|
|
|
ifs = fetch_fentry(fs, f, i, n);
|
|
ifs->Tag = f;
|
|
while ((max+1)->Tag == min->Tag &&
|
|
max != grp->LastClause) max++;
|
|
/* delay non-trivial indexing
|
|
if (min != max &&
|
|
!IsExtensionFunctor(f)) {
|
|
ifs->Label = suspend_indexing(min, max, ap, cint);
|
|
} else
|
|
*/
|
|
if (IsExtensionFunctor(f)) {
|
|
if (f == FunctorDBRef)
|
|
ifs->Label = do_dbref_index(min, max, t, cint, argno, nxtlbl, first, clleft, top);
|
|
else
|
|
ifs->Label = do_blob_index(min, max, t, cint, argno, nxtlbl, first, clleft, top);
|
|
|
|
} else {
|
|
CELL *sreg;
|
|
|
|
if (!IsVarTerm(t) && IsApplTerm(t) && FunctorOfTerm(t) == f) {
|
|
sreg = RepAppl(t)+1;
|
|
} else {
|
|
sreg = NULL;
|
|
}
|
|
ifs->Label = do_compound_index(min, max, sreg, cint, 0, ArityOfFunctor(f), argno, nxtlbl, first, last_arg, clleft, top, TRUE);
|
|
}
|
|
grp->FirstClause = min = max+1;
|
|
}
|
|
return lbl;
|
|
}
|
|
|
|
static UInt
|
|
do_pair(GroupDef *grp, Term t, struct intermediates *cint, UInt argno, int first, int last_arg, UInt nxtlbl, int clleft, CELL *top)
|
|
{
|
|
ClauseDef *min = grp->FirstClause;
|
|
ClauseDef *max = grp->FirstClause;
|
|
|
|
while (IsPairTerm(max->Tag) && max != grp->LastClause) {
|
|
max++;
|
|
}
|
|
if (!IsPairTerm(max->Tag)) {
|
|
max--;
|
|
}
|
|
if (min > grp->LastClause) {
|
|
/* no clauses, just skip */
|
|
return nxtlbl;
|
|
}
|
|
grp->FirstClause = max+1;
|
|
if (min == max) {
|
|
/* single clause, no need to do indexing, but we do know it is a list */
|
|
return (UInt)(min->CurrentCode);
|
|
}
|
|
if (min != max && !IsPairTerm(t)) {
|
|
return suspend_indexing(min, max, cint->CurrentPred, cint);
|
|
}
|
|
return do_compound_index(min, max, (IsPairTerm(t) ? RepPair(t) : NULL), cint, 0, 2, argno, nxtlbl, first, last_arg, clleft, top, TRUE);
|
|
}
|
|
|
|
static void
|
|
group_prologue(int compound_term, UInt argno, int first, struct intermediates *cint)
|
|
{
|
|
if (compound_term) {
|
|
Yap_emit(cache_sub_arg_op, compound_term-1, compound_term-1, cint);
|
|
} else {
|
|
if (!first || argno != 1) {
|
|
Yap_emit(cache_arg_op, argno, argno, cint);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* make sure that we can handle failure correctly */
|
|
static void
|
|
emit_protection_choicepoint(int first, int clleft, UInt nxtlbl, struct intermediates *cint)
|
|
{
|
|
|
|
if (first) {
|
|
if (clleft) {
|
|
if (cint->CurrentPred->PredFlags & LogUpdatePredFlag) {
|
|
UInt labl = new_label();
|
|
|
|
Yap_emit_3ops(enter_lu_op, labl, labl, 0, cint);
|
|
Yap_emit(label_op, labl, Zero, cint);
|
|
}
|
|
Yap_emit(tryme_op, nxtlbl, (clleft << 1), cint);
|
|
}
|
|
} else {
|
|
/* !first */
|
|
if (clleft) {
|
|
Yap_emit(retryme_op, nxtlbl, (clleft << 1), cint);
|
|
#ifdef TABLING
|
|
} else if ((cint->CurrentPred->PredFlags & TabledPredFlag)) {
|
|
/*
|
|
we cannot get rid of the choice-point for tabled predicates, all
|
|
kinds of hell would follow, so we just keep it around: not nice,
|
|
but should work.
|
|
*/
|
|
Yap_emit(retryme_op, (CELL)TRUSTFAILCODE, 0, cint);
|
|
#endif /* TABLING */
|
|
} else {
|
|
Yap_emit(trustme_op, 0, 0, cint);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static ClauseDef *
|
|
cls_move(ClauseDef *min, PredEntry *ap, ClauseDef *max, int compound_term, UInt argno, int last_arg)
|
|
{
|
|
ClauseDef *cl=min;
|
|
|
|
cl = min;
|
|
if (compound_term) {
|
|
while (cl <= max) {
|
|
skip_to_arg(cl, ap, compound_term, last_arg );
|
|
cl++;
|
|
}
|
|
} else {
|
|
while (cl <= max) {
|
|
if (cl->Tag == (_var+1)*sizeof(CELL)) {
|
|
ClauseDef *cli = cl;
|
|
while (cli < max) {
|
|
clcpy(cli,cli+1);
|
|
cli++;
|
|
}
|
|
max--;
|
|
} else {
|
|
move_next(cl, argno);
|
|
}
|
|
cl++;
|
|
}
|
|
}
|
|
return max;
|
|
}
|
|
|
|
static void
|
|
purge_pvar(GroupDef *group) {
|
|
ClauseDef *max = group->LastClause;
|
|
ClauseDef *cl = group->FirstClause;
|
|
|
|
while (cl <= max) {
|
|
if (cl->Tag == (_var+1)*sizeof(CELL)) {
|
|
ClauseDef *cli = cl;
|
|
while (cli < max) {
|
|
clcpy(cli,cli+1);
|
|
cli++;
|
|
}
|
|
group->VarClauses--;
|
|
max--;
|
|
}
|
|
cl++;
|
|
}
|
|
group->LastClause = max;
|
|
}
|
|
|
|
|
|
static UInt *
|
|
do_nonvar_group(GroupDef *grp, Term t, UInt compound_term, CELL *sreg, UInt arity, UInt labl, struct intermediates *cint, UInt argno, int first, int last_arg, UInt nxtlbl, int clleft, CELL *top) {
|
|
TypeSwitch *type_sw;
|
|
PredEntry *ap = cint->CurrentPred;
|
|
|
|
|
|
/* move cl pointer */
|
|
if (grp->AtomClauses + grp->PairClauses + grp->StructClauses > 1) {
|
|
Yap_emit(label_op, labl, Zero, cint);
|
|
if (argno == 1 && !compound_term) {
|
|
emit_protection_choicepoint(first, clleft, nxtlbl, cint);
|
|
}
|
|
group_prologue(compound_term, argno, first, cint);
|
|
if (grp->LastClause < grp->FirstClause) { /* only tests */
|
|
return NULL;
|
|
}
|
|
type_sw = emit_type_switch(switch_on_type_op, cint);
|
|
/* have these first so that we will have something initialised here */
|
|
type_sw->ConstEntry =
|
|
type_sw->FuncEntry =
|
|
type_sw->PairEntry =
|
|
type_sw->VarEntry =
|
|
nxtlbl;
|
|
type_sw->VarEntry = do_var_entries(grp, t, cint, argno, first, clleft, nxtlbl);
|
|
grp->LastClause = cls_move(grp->FirstClause, ap, grp->LastClause, compound_term, argno, last_arg);
|
|
sort_group(grp,top,cint);
|
|
while (grp->FirstClause <= grp->LastClause) {
|
|
if (IsAtomOrIntTerm(grp->FirstClause->Tag)) {
|
|
type_sw->ConstEntry = do_consts(grp, t, cint, compound_term, sreg, arity, last_arg, argno, first, nxtlbl, clleft, top);
|
|
} else if (IsApplTerm(grp->FirstClause->Tag)) {
|
|
type_sw->FuncEntry = do_funcs(grp, t, cint, argno, first, last_arg, nxtlbl, clleft, top);
|
|
} else {
|
|
type_sw->PairEntry = do_pair(grp, t, cint, argno, first, last_arg, nxtlbl, clleft, top);
|
|
}
|
|
}
|
|
return &(type_sw->VarEntry);
|
|
} else {
|
|
Yap_emit(label_op,labl,Zero, cint);
|
|
do_var_group(grp, cint, TRUE, first, clleft, nxtlbl, ap->ArityOfPE+1);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static UInt
|
|
do_optims(GroupDef *group, int ngroups, UInt fail_l, ClauseDef *min, struct intermediates *cint)
|
|
{
|
|
if (ngroups==2 && group[0].FirstClause == group[0].LastClause &&
|
|
group[0].AtomClauses == 1 && group[1].VarClauses == 1) {
|
|
CELL *sp;
|
|
UInt labl;
|
|
|
|
labl = new_label();
|
|
sp = Yap_emit_extra_size(if_not_op, Zero, 4*CellSize, cint);
|
|
sp[0] = (CELL)(group[0].FirstClause->Tag);
|
|
sp[1] = (CELL)(group[1].FirstClause->Code);
|
|
sp[2] = do_var_clauses(group[0].FirstClause, group[1].LastClause, FALSE, cint, TRUE, 0, (CELL)FAILCODE, cint->CurrentPred->ArityOfPE+1);
|
|
sp[3] = do_var_clauses(min, group[1].LastClause, FALSE, cint, TRUE, 0, (CELL)FAILCODE, cint->CurrentPred->ArityOfPE+1);
|
|
return labl;
|
|
}
|
|
return fail_l;
|
|
}
|
|
|
|
static int
|
|
cls_info(ClauseDef *min, ClauseDef *max, UInt argno)
|
|
{
|
|
ClauseDef *cl=min;
|
|
int found_pvar = FALSE;
|
|
|
|
while (cl <= max) {
|
|
add_info(cl, argno);
|
|
if (cl->Tag == (_var+1)*sizeof(CELL)) {
|
|
found_pvar = TRUE;
|
|
}
|
|
/* if (IsVarTerm(cl->Tag)) cl->Tag = (CELL)NULL; */
|
|
cl++;
|
|
}
|
|
return found_pvar;
|
|
}
|
|
|
|
static int
|
|
cls_head_info(ClauseDef *min, ClauseDef *max, UInt argno)
|
|
{
|
|
ClauseDef *cl=min;
|
|
|
|
while (cl <= max) {
|
|
add_head_info(cl, argno);
|
|
/* if (IsVarTerm(cl->Tag)) cl->Tag = (CELL)NULL; */
|
|
cl++;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
static UInt
|
|
do_index(ClauseDef *min, ClauseDef* max, struct intermediates *cint, UInt argno, UInt fail_l, int first, int clleft, CELL *top)
|
|
{
|
|
UInt ngroups, found_pvar = FALSE;
|
|
UInt i = 0;
|
|
GroupDef *group = (GroupDef *)top;
|
|
UInt labl, labl0, lablx;
|
|
Term t;
|
|
/* remember how we entered here */
|
|
UInt argno0 = argno;
|
|
PredEntry *ap = cint->CurrentPred;
|
|
yamop *eblk = cint->expand_block;
|
|
|
|
if (min == max) {
|
|
/* base case, just commit to the current code */
|
|
return emit_single_switch_case(min, cint, first, clleft, fail_l);
|
|
}
|
|
if ((argno > 1 && yap_flags[INDEXING_MODE_FLAG] == INDEX_MODE_SINGLE) ||
|
|
yap_flags[INDEXING_MODE_FLAG] == INDEX_MODE_OFF ||
|
|
ap->ArityOfPE < argno) {
|
|
return do_var_clauses(min, max, FALSE, cint, first, clleft, fail_l, ap->ArityOfPE+1);
|
|
}
|
|
t = Deref(XREGS[argno]);
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
found_pvar = cls_head_info(min, max, argno);
|
|
} else {
|
|
found_pvar = cls_info(min, max, argno);
|
|
}
|
|
ngroups = groups_in(min, max, group);
|
|
if (IsVarTerm(t)) {
|
|
lablx = new_label();
|
|
Yap_emit(label_op, lablx, Zero, cint);
|
|
while (IsVarTerm(t)) {
|
|
if (ngroups > 1 || !group->VarClauses) {
|
|
UInt susp_lab = suspend_indexing(min, max, ap, cint);
|
|
if (!cint->expand_block) {
|
|
cint->expand_block = (yamop *)susp_lab;
|
|
}
|
|
Yap_emit(jump_nv_op, susp_lab, argno, cint);
|
|
}
|
|
if (argno == ap->ArityOfPE ||
|
|
yap_flags[INDEXING_MODE_FLAG] == INDEX_MODE_SINGLE) {
|
|
do_var_clauses(min, max, FALSE, cint, first, clleft, fail_l, argno0);
|
|
cint->expand_block = eblk;
|
|
return lablx;
|
|
}
|
|
argno++;
|
|
t = Deref(XREGS[argno]);
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
found_pvar = cls_head_info(min, max, argno);
|
|
} else {
|
|
found_pvar = cls_info(min, max, argno);
|
|
}
|
|
ngroups = groups_in(min, max, group);
|
|
}
|
|
labl0 = labl = new_label();
|
|
} else {
|
|
lablx = labl0 = labl = new_label();
|
|
}
|
|
cint->expand_block = eblk;
|
|
top = (CELL *)(group+ngroups);
|
|
if (argno > 1) {
|
|
/* don't try being smart for other arguments than the first */
|
|
if (ngroups > 1 || group->VarClauses != 0 || found_pvar) {
|
|
if (ap->ArityOfPE == argno) {
|
|
return do_var_clauses(min, max, FALSE, cint, first, clleft, fail_l, ap->ArityOfPE+1);
|
|
} else {
|
|
return do_index(min, max, cint, argno+1, fail_l, first, clleft, top);
|
|
}
|
|
} else {
|
|
ClauseDef *cl = min;
|
|
/*
|
|
need to reset the code pointer, otherwise I could be in
|
|
the middle of a compound term.
|
|
*/
|
|
while (cl <= max) {
|
|
cl->CurrentCode = cl->Code;
|
|
cl++;
|
|
}
|
|
}
|
|
} else {
|
|
UInt special_options;
|
|
|
|
if ((ap->PredFlags & LogUpdatePredFlag) && ngroups > 1) {
|
|
/* make sure we only expand at a single point */
|
|
if (group[0].VarClauses) {
|
|
/* the problem here is that I really cannot safely handle the
|
|
case where the index is in use and the first case is
|
|
discarded. In this case, the indexing code will try to
|
|
remove any switches below,
|
|
and they still might useful if you were backtracking
|
|
from the first clause. */
|
|
group[0].VarClauses = ap->cs.p_code.NOfClauses;
|
|
group[0].LastClause = group[ngroups-1].LastClause;
|
|
ngroups = 1;
|
|
} else if (!group[0].VarClauses && ngroups > 2) {
|
|
int ncls = group[ngroups-1].LastClause-group[1].FirstClause;
|
|
group[1].VarClauses += ncls;
|
|
group[1].LastClause = group[ngroups-1].LastClause;
|
|
ngroups = 2;
|
|
}
|
|
} else if ((special_options = do_optims(group, ngroups, fail_l, min, cint)) != fail_l) {
|
|
return special_options;
|
|
}
|
|
if (ngroups == 1 && group->VarClauses && !found_pvar) {
|
|
return do_index(min, max, cint, argno+1, fail_l, first, clleft, top);
|
|
} else if (found_pvar ||
|
|
(ap->PredFlags & LogUpdatePredFlag && group[0].VarClauses)) {
|
|
/* make sure we know where to suspend */
|
|
Yap_emit(label_op, labl0, Zero, cint);
|
|
labl = new_label();
|
|
Yap_emit(jump_v_op, suspend_indexing(min, max, ap, cint), Zero, cint);
|
|
}
|
|
}
|
|
for (i=0; i < ngroups; i++) {
|
|
UInt nextlbl;
|
|
int left_clauses = clleft+(max-group->LastClause);
|
|
/* a group may end up not having clauses*/
|
|
|
|
if (i < ngroups-1) {
|
|
nextlbl = new_label();
|
|
} else {
|
|
nextlbl = fail_l;
|
|
}
|
|
if (found_pvar && argno == 1) {
|
|
purge_pvar(group);
|
|
}
|
|
if (group->FirstClause==group->LastClause && first && left_clauses == 0) {
|
|
Yap_emit(jumpi_op, (CELL)(group->FirstClause->Code), Zero, cint);
|
|
} else {
|
|
if (group->VarClauses) {
|
|
Yap_emit(label_op,labl,Zero, cint);
|
|
do_var_group(group, cint, argno == 1, first, left_clauses, nextlbl, ap->ArityOfPE+1);
|
|
} else {
|
|
do_nonvar_group(group, t, 0, NULL, 0, labl, cint, argno, first, TRUE, nextlbl, left_clauses, top);
|
|
}
|
|
}
|
|
first = FALSE;
|
|
group++;
|
|
labl = nextlbl;
|
|
}
|
|
return lablx;
|
|
}
|
|
|
|
static ClauseDef *
|
|
copy_clauses(ClauseDef *max0, ClauseDef *min0, CELL *top, struct intermediates *cint)
|
|
{
|
|
UInt sz = ((max0+1)-min0)*sizeof(ClauseDef);
|
|
if ((char *)top + sz >= Yap_TrailTop-4096) {
|
|
Yap_Error_Size = sz;
|
|
/* grow stack */
|
|
save_machine_regs();
|
|
longjmp(cint->CompilerBotch,4);
|
|
}
|
|
memcpy((void *)top, (void *)min0, sz);
|
|
return (ClauseDef *)top;
|
|
}
|
|
|
|
|
|
/* execute an index inside a structure */
|
|
static UInt
|
|
do_compound_index(ClauseDef *min0, ClauseDef* max0, Term* sreg, struct intermediates *cint, UInt i, UInt arity, UInt argno, UInt fail_l, int first, int last_arg, int clleft, CELL *top, int done_work)
|
|
{
|
|
UInt ret_lab = 0, *newlabp;
|
|
CELL *top0 = top;
|
|
ClauseDef *min, *max;
|
|
PredEntry *ap = cint->CurrentPred;
|
|
int found_index = FALSE, lu_pred = ap->PredFlags & LogUpdatePredFlag;
|
|
|
|
newlabp = & ret_lab;
|
|
if (min0 == max0) {
|
|
/* base case, just commit to the current code */
|
|
return emit_single_switch_case(min0, cint, first, clleft, fail_l);
|
|
}
|
|
if (yap_flags[INDEXING_MODE_FLAG] == INDEX_MODE_SINGLE) {
|
|
*newlabp =
|
|
do_var_clauses(min0, max0, FALSE, cint, first, clleft, fail_l, ap->ArityOfPE+1);
|
|
return ret_lab;
|
|
}
|
|
if (sreg == NULL) {
|
|
return suspend_indexing(min0, max0, ap, cint);
|
|
}
|
|
while (i < arity && !found_index) {
|
|
ClauseDef *cl;
|
|
GroupDef *group;
|
|
UInt ngroups;
|
|
int isvt = IsVarTerm(Deref(sreg[i]));
|
|
|
|
min = copy_clauses(max0, min0, top, cint);
|
|
max = min+(max0-min0);
|
|
top = (CELL *)(max+1);
|
|
cl = min;
|
|
/* search for a subargument */
|
|
while (cl <= max) {
|
|
add_arg_info(cl, ap, i+1);
|
|
cl++;
|
|
}
|
|
group = (GroupDef *)top;
|
|
ngroups = groups_in(min, max, group);
|
|
if (ngroups == 1 && group->VarClauses == 0) {
|
|
/* ok, we are doing a sub-argument */
|
|
/* process groups */
|
|
*newlabp = new_label();
|
|
top = (CELL *)(group+1);
|
|
newlabp = do_nonvar_group(group, (sreg == NULL ? 0L : Deref(sreg[i])), i+1, (isvt ? NULL : sreg), arity, *newlabp, cint, argno, argno == 1, (last_arg && i+1 == arity), fail_l, clleft, top);
|
|
if (newlabp == NULL) {
|
|
found_index = TRUE;
|
|
top = top0;
|
|
break;
|
|
}
|
|
if (sreg == NULL || !isvt) {
|
|
found_index = TRUE;
|
|
} else {
|
|
done_work |= TRUE;
|
|
}
|
|
}
|
|
top = top0;
|
|
i++;
|
|
}
|
|
if (!found_index) {
|
|
if (!lu_pred || !done_work)
|
|
*newlabp = do_index(min0, max0, cint, argno+1, fail_l, first, clleft, top);
|
|
else
|
|
*newlabp = suspend_indexing(min0, max0, ap, cint);
|
|
}
|
|
return ret_lab;
|
|
}
|
|
|
|
static UInt
|
|
do_dbref_index(ClauseDef *min, ClauseDef* max, Term t, struct intermediates *cint, UInt argno, UInt fail_l, int first, int clleft, CELL *top)
|
|
{
|
|
UInt ngroups;
|
|
GroupDef *group;
|
|
ClauseDef *cl = min;
|
|
|
|
group = (GroupDef *)top;
|
|
cl = min;
|
|
|
|
while (cl <= max) {
|
|
cl->Tag = cl->u.t_ptr;
|
|
cl++;
|
|
}
|
|
ngroups = groups_in(min, max, group);
|
|
if (ngroups > 1 || group->VarClauses) {
|
|
return do_index(min, max, cint, argno+1, fail_l, first, clleft, top);
|
|
} else {
|
|
int labl = new_label();
|
|
|
|
Yap_emit(label_op, labl, Zero, cint);
|
|
Yap_emit(index_dbref_op, Zero, Zero, cint);
|
|
sort_group(group,(CELL *)(group+1),cint);
|
|
do_blobs(group, t, cint, argno, first, fail_l, clleft, (CELL *)group+1);
|
|
return labl;
|
|
}
|
|
}
|
|
|
|
static UInt
|
|
do_blob_index(ClauseDef *min, ClauseDef* max, Term t, struct intermediates *cint, UInt argno, UInt fail_l, int first, int clleft, CELL *top)
|
|
{
|
|
UInt ngroups;
|
|
GroupDef *group;
|
|
ClauseDef *cl = min;
|
|
|
|
group = (GroupDef *)top;
|
|
cl = min;
|
|
|
|
while (cl <= max) {
|
|
if (cl->u.t_ptr == (CELL)NULL) { /* check whether it is a builtin */
|
|
cl->Tag = Zero;
|
|
} else {
|
|
cl->Tag = MkIntTerm(RepAppl(cl->u.t_ptr)[1]);
|
|
}
|
|
cl++;
|
|
}
|
|
ngroups = groups_in(min, max, group);
|
|
if (ngroups > 1 || group->VarClauses) {
|
|
return do_index(min, max, cint, argno+1, fail_l, first, clleft, top);
|
|
} else {
|
|
int labl = new_label();
|
|
|
|
Yap_emit(label_op, labl, Zero, cint);
|
|
Yap_emit(index_blob_op, Zero, Zero, cint);
|
|
sort_group(group,(CELL *)(group+1),cint);
|
|
do_blobs(group, t, cint, argno, first, fail_l, clleft, (CELL *)group+1);
|
|
return labl;
|
|
}
|
|
}
|
|
|
|
static void
|
|
init_clauses(ClauseDef *cl, PredEntry *ap)
|
|
{
|
|
if (ap->PredFlags & MegaClausePredFlag) {
|
|
MegaClause *mcl = ClauseCodeToMegaClause(ap->cs.p_code.FirstClause);
|
|
yamop *end = (yamop *)((char *)mcl->ClCode+mcl->ClSize);
|
|
yamop *cd = mcl->ClCode;
|
|
while (cd < end) {
|
|
cl->Code = cl->CurrentCode = cd;
|
|
cd = (yamop *)((char *)cd+mcl->ClItemSize);
|
|
cl++;
|
|
}
|
|
} else {
|
|
StaticClause *scl;
|
|
|
|
scl = ClauseCodeToStaticClause(ap->cs.p_code.FirstClause);
|
|
do {
|
|
cl->Code = cl->CurrentCode = scl->ClCode;
|
|
cl++;
|
|
if (scl->ClCode == ap->cs.p_code.LastClause)
|
|
return;
|
|
scl = scl->ClNext;
|
|
} while (TRUE);
|
|
}
|
|
}
|
|
|
|
static void
|
|
init_log_upd_clauses(ClauseDef *cl, PredEntry *ap)
|
|
{
|
|
LogUpdClause *lcl = ClauseCodeToLogUpdClause(ap->cs.p_code.FirstClause);
|
|
|
|
do {
|
|
cl->Code = cl->CurrentCode = lcl->ClCode;
|
|
cl++;
|
|
lcl = lcl->ClNext;
|
|
} while (lcl != NULL);
|
|
}
|
|
|
|
static UInt
|
|
compile_index(struct intermediates *cint)
|
|
{
|
|
PredEntry *ap = cint->CurrentPred;
|
|
int NClauses = ap->cs.p_code.NOfClauses;
|
|
ClauseDef *cls = (ClauseDef *)H;
|
|
CELL *top = (CELL *) TR;
|
|
|
|
/* only global variable I use directly */
|
|
labelno = 1;
|
|
|
|
Yap_Error_Size = 0;
|
|
/* reserve double the space for compiler */
|
|
if (cls+2*NClauses > (ClauseDef *)(ASP-4096)) {
|
|
/* tell how much space we need */
|
|
Yap_Error_Size += NClauses*sizeof(ClauseDef);
|
|
/* grow stack */
|
|
save_machine_regs();
|
|
longjmp(cint->CompilerBotch,3);
|
|
}
|
|
cint->freep = (char *)(cls+NClauses);
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
/* throw away a label */
|
|
new_label();
|
|
init_log_upd_clauses(cls,ap);
|
|
} else {
|
|
/* prepare basic data structures */
|
|
init_clauses(cls,ap);
|
|
}
|
|
return do_index(cls, cls+(NClauses-1), cint, 1, (UInt)FAILCODE, TRUE, 0, top);
|
|
}
|
|
|
|
|
|
yamop *
|
|
Yap_PredIsIndexable(PredEntry *ap, UInt NSlots)
|
|
{
|
|
yamop *indx_out;
|
|
int setjres;
|
|
struct intermediates cint;
|
|
|
|
cint.CurrentPred = ap;
|
|
Yap_Error_Size = 0;
|
|
|
|
if ((setjres = setjmp(cint.CompilerBotch)) == 3) {
|
|
restore_machine_regs();
|
|
recover_from_failed_susp_on_cls(&cint, 0);
|
|
Yap_gcl(Yap_Error_Size, ap->ArityOfPE+NSlots, ENV, CP);
|
|
} else if (setjres == 2) {
|
|
restore_machine_regs();
|
|
Yap_Error_Size = recover_from_failed_susp_on_cls(&cint, Yap_Error_Size);
|
|
if (!Yap_growheap(FALSE, Yap_Error_Size, NULL)) {
|
|
Yap_Error(OUT_OF_HEAP_ERROR, TermNil, Yap_ErrorMessage);
|
|
return FAILCODE;
|
|
}
|
|
} else if (setjres == 4) {
|
|
restore_machine_regs();
|
|
recover_from_failed_susp_on_cls(&cint, 0);
|
|
if (!Yap_growtrail(Yap_Error_Size, FALSE)) {
|
|
Yap_Error(OUT_OF_TRAIL_ERROR, TermNil, Yap_ErrorMessage);
|
|
return FAILCODE;
|
|
}
|
|
} else if (setjres != 0) {
|
|
restore_machine_regs();
|
|
recover_from_failed_susp_on_cls(&cint, 0);
|
|
if (!Yap_growheap(FALSE, Yap_Error_Size, NULL)) {
|
|
Yap_Error(OUT_OF_HEAP_ERROR, TermNil, Yap_ErrorMessage);
|
|
return FAILCODE;
|
|
}
|
|
}
|
|
restart_index:
|
|
Yap_BuildMegaClause(ap);
|
|
cint.CodeStart = cint.BlobsStart = cint.cpc = cint.icpc = NULL;
|
|
cint.expand_block = NULL;
|
|
Yap_ErrorMessage = NULL;
|
|
if (compile_index(&cint) == (UInt)FAILCODE) {
|
|
return FAILCODE;
|
|
}
|
|
#ifdef DEBUG
|
|
if (Yap_Option['i' - 'a' + 1]) {
|
|
Yap_ShowCode(&cint);
|
|
}
|
|
#endif
|
|
/* globals for assembler */
|
|
IPredArity = ap->ArityOfPE;
|
|
if (cint.CodeStart) {
|
|
if ((indx_out = Yap_assemble(ASSEMBLING_INDEX, TermNil, ap, FALSE, &cint)) == NULL) {
|
|
if (!Yap_growheap(FALSE, Yap_Error_Size, NULL)) {
|
|
Yap_Error(OUT_OF_HEAP_ERROR, TermNil, Yap_ErrorMessage);
|
|
return NULL;
|
|
}
|
|
goto restart_index;
|
|
}
|
|
} else {
|
|
return NULL;
|
|
}
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
LogUpdIndex *cl = ClauseCodeToLogUpdIndex(indx_out);
|
|
cl->ClFlags |= SwitchRootMask;
|
|
}
|
|
return(indx_out);
|
|
}
|
|
|
|
static istack_entry *
|
|
reset_stack(istack_entry *sp0)
|
|
{
|
|
sp0->pos = 0;
|
|
return sp0;
|
|
}
|
|
|
|
static istack_entry *
|
|
push_stack(istack_entry *sp, Int arg, Term Tag, Term extra, struct intermediates *cint)
|
|
{
|
|
if (sp+1 > (istack_entry *)Yap_TrailTop) {
|
|
save_machine_regs();
|
|
longjmp(cint->CompilerBotch,4);
|
|
}
|
|
sp->pos = arg;
|
|
sp->val = Tag;
|
|
sp->extra = extra;
|
|
sp++;
|
|
sp->pos = 0;
|
|
return sp;
|
|
}
|
|
|
|
static istack_entry *
|
|
install_clause(ClauseDef *cls, PredEntry *ap, istack_entry *stack)
|
|
{
|
|
int last_arg = TRUE;
|
|
|
|
istack_entry *sp = stack;
|
|
last_arg = TRUE;
|
|
while (sp->pos) {
|
|
if ((Int)(sp->pos) > 0) {
|
|
add_info(cls, sp->pos);
|
|
} else if (sp->pos) {
|
|
UInt argno = -sp->pos;
|
|
add_arg_info(cls, ap, argno);
|
|
}
|
|
/* if we are not talking about a variable */
|
|
if (cls->Tag != sp->val) {
|
|
if (sp->val == 0L) {
|
|
sp++;
|
|
}
|
|
break;
|
|
} else {
|
|
if (IsApplTerm(cls->Tag)) {
|
|
Functor f = (Functor)RepAppl(cls->Tag);
|
|
if (IsExtensionFunctor(f)) {
|
|
if (f == FunctorDBRef) {
|
|
if (cls->u.t_ptr != sp->extra) break;
|
|
} else {
|
|
Term t = MkIntTerm(RepAppl(sp->extra)[1]),
|
|
t1 = MkIntTerm(RepAppl(cls->u.t_ptr)[1]);
|
|
if (t != t1) break;
|
|
}
|
|
}
|
|
}
|
|
if ((Int)(sp->pos) > 0) {
|
|
move_next(cls, sp->pos);
|
|
} else if (sp->pos) {
|
|
UInt argno = -sp->pos;
|
|
skip_to_arg(cls, ap, argno, FALSE);
|
|
if (ArityOfFunctor((Functor)RepAppl(sp[-1].val))
|
|
!= argno+1) {
|
|
last_arg = FALSE;
|
|
}
|
|
}
|
|
}
|
|
sp++;
|
|
}
|
|
return sp;
|
|
}
|
|
|
|
static ClauseDef *
|
|
install_clauses(ClauseDef *cls, PredEntry *ap, istack_entry *stack, yamop *beg, yamop *end)
|
|
{
|
|
istack_entry *sp = stack;
|
|
if (ap->PredFlags & MegaClausePredFlag) {
|
|
MegaClause *mcl = ClauseCodeToMegaClause(beg);
|
|
yamop *end = (yamop *)((char *)mcl->ClCode+mcl->ClSize);
|
|
yamop *cd = mcl->ClCode;
|
|
|
|
if (stack[0].pos == 0) {
|
|
while (TRUE) {
|
|
cls->Code = cls->CurrentCode = cd;
|
|
cls->Tag = 0;
|
|
cls++;
|
|
cd = (yamop *)((char *)cd+mcl->ClItemSize);
|
|
if (cd == end) {
|
|
return cls-1;
|
|
}
|
|
}
|
|
}
|
|
while (TRUE) {
|
|
cls->Code = cls->CurrentCode = cd;
|
|
sp = install_clause(cls, ap, stack);
|
|
/* we reached a matching clause */
|
|
if (!sp->pos && (sp[-1].val == 0L || cls->Tag == sp[-1].val)) {
|
|
cls++;
|
|
}
|
|
cd = (yamop *)((char *)cd+mcl->ClItemSize);
|
|
if (cd == end) {
|
|
return cls-1;
|
|
}
|
|
}
|
|
} else {
|
|
StaticClause *cl = ClauseCodeToStaticClause(beg);
|
|
|
|
if (stack[0].pos == 0) {
|
|
while (TRUE) {
|
|
cls->Code = cls->CurrentCode = cl->ClCode;
|
|
cls->Tag = 0;
|
|
cls++;
|
|
if (cl->ClCode == end) {
|
|
return cls-1;
|
|
}
|
|
cl = cl->ClNext;
|
|
}
|
|
}
|
|
while (TRUE) {
|
|
cls->Code = cls->CurrentCode = cl->ClCode;
|
|
sp = install_clause(cls, ap, stack);
|
|
/* we reached a matching clause */
|
|
if (!sp->pos && (sp[-1].val == 0L || cls->Tag == sp[-1].val)) {
|
|
cls++;
|
|
}
|
|
if (cl->ClCode == end || cl->ClCode == NULL) {
|
|
return cls-1;
|
|
}
|
|
cl = cl->ClNext;
|
|
}
|
|
}
|
|
}
|
|
|
|
static ClauseDef *
|
|
install_clauseseq(ClauseDef *cls, PredEntry *ap, istack_entry *stack, yamop **beg, yamop **end)
|
|
{
|
|
istack_entry *sp = stack;
|
|
|
|
if (stack[0].pos == 0) {
|
|
while (TRUE) {
|
|
if (*beg) {
|
|
cls->Code = cls->CurrentCode = *beg;
|
|
cls->Tag = 0;
|
|
cls++;
|
|
}
|
|
beg++;
|
|
if (beg == end) {
|
|
return cls-1;
|
|
}
|
|
}
|
|
}
|
|
while (TRUE) {
|
|
if (*beg) {
|
|
cls->Code = cls->CurrentCode = *beg;
|
|
sp = install_clause(cls, ap, stack);
|
|
/* we reached a matching clause */
|
|
if (!sp->pos && (sp[-1].val == 0L || cls->Tag == sp[-1].val)) {
|
|
cls++;
|
|
}
|
|
}
|
|
beg++;
|
|
if (beg == end) {
|
|
return cls-1;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
reinstall_clauses(ClauseDef *cls, ClauseDef *end, PredEntry *ap, istack_entry *stack)
|
|
{
|
|
do {
|
|
cls->CurrentCode = cls->Code;
|
|
install_clause(cls, ap, stack);
|
|
} while (cls++ != end);
|
|
}
|
|
|
|
static istack_entry *
|
|
install_log_upd_clause(ClauseDef *cls, PredEntry *ap, istack_entry *stack)
|
|
{
|
|
int last_arg = TRUE;
|
|
|
|
istack_entry *sp = stack;
|
|
last_arg = TRUE;
|
|
while (sp->pos) {
|
|
if ((Int)(sp->pos) > 0) {
|
|
add_head_info(cls, sp->pos);
|
|
} else if (sp->pos) {
|
|
UInt argno = -sp->pos;
|
|
add_arg_info(cls, ap, argno);
|
|
}
|
|
/* if we are not talking about a variable */
|
|
if (cls->Tag != sp->val) {
|
|
if (sp->val == 0L) {
|
|
sp++;
|
|
}
|
|
break;
|
|
} else {
|
|
if (IsApplTerm(cls->Tag)) {
|
|
Functor f = (Functor)RepAppl(cls->Tag);
|
|
if (IsExtensionFunctor(f)) {
|
|
if (f == FunctorDBRef) {
|
|
if (cls->u.t_ptr != sp->extra) break;
|
|
} else {
|
|
Term t = MkIntTerm(RepAppl(sp->extra)[1]),
|
|
t1 = MkIntTerm(RepAppl(cls->u.t_ptr)[1]);
|
|
if (t != t1) break;
|
|
}
|
|
}
|
|
}
|
|
if ((Int)(sp->pos) > 0) {
|
|
move_next(cls, sp->pos);
|
|
} else if (sp->pos) {
|
|
UInt argno = -sp->pos;
|
|
skip_to_arg(cls, ap, argno, FALSE);
|
|
if (ArityOfFunctor((Functor)RepAppl(sp[-1].val))
|
|
!= argno+1) {
|
|
last_arg = FALSE;
|
|
}
|
|
}
|
|
}
|
|
sp++;
|
|
}
|
|
return sp;
|
|
}
|
|
|
|
static ClauseDef *
|
|
install_log_upd_clauses(ClauseDef *cls, PredEntry *ap, istack_entry *stack, yamop *beg, yamop *end)
|
|
{
|
|
istack_entry *sp = stack;
|
|
|
|
if (stack[0].pos == 0) {
|
|
while (TRUE) {
|
|
cls->Code = cls->CurrentCode = beg;
|
|
cls->Tag = 0;
|
|
cls++;
|
|
if (beg == end || beg == NULL) {
|
|
return cls-1;
|
|
}
|
|
beg = ClauseCodeToLogUpdClause(beg)->ClNext->ClCode;
|
|
}
|
|
}
|
|
while (TRUE) {
|
|
cls->Code = cls->CurrentCode = beg;
|
|
sp = install_log_upd_clause(cls, ap, stack);
|
|
/* we reached a matching clause */
|
|
if (!sp->pos && (sp[-1].val == 0L || cls->Tag == sp[-1].val)) {
|
|
cls++;
|
|
}
|
|
if (beg == end || beg == NULL) {
|
|
return cls-1;
|
|
}
|
|
beg = ClauseCodeToLogUpdClause(beg)->ClNext->ClCode;
|
|
}
|
|
}
|
|
|
|
static ClauseDef *
|
|
install_log_upd_clauseseq(ClauseDef *cls, PredEntry *ap, istack_entry *stack, yamop **beg, yamop **end)
|
|
{
|
|
istack_entry *sp = stack;
|
|
|
|
if (stack[0].pos == 0) {
|
|
while (TRUE) {
|
|
if (beg) {
|
|
cls->Code = cls->CurrentCode = *beg;
|
|
cls->Tag = 0;
|
|
cls++;
|
|
}
|
|
beg++;
|
|
if (beg == end) {
|
|
return cls-1;
|
|
}
|
|
}
|
|
}
|
|
while (TRUE) {
|
|
if (*beg) {
|
|
cls->Code = cls->CurrentCode = *beg;
|
|
sp = install_log_upd_clause(cls, ap, stack);
|
|
/* we reached a matching clause */
|
|
if (!sp->pos && (sp[-1].val == 0L || cls->Tag == sp[-1].val)) {
|
|
cls++;
|
|
}
|
|
}
|
|
beg++;
|
|
if (beg == end) {
|
|
return cls-1;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
reinstall_log_upd_clauses(ClauseDef *cls, ClauseDef *end, PredEntry *ap, istack_entry *stack)
|
|
{
|
|
do {
|
|
cls->CurrentCode = cls->Code;
|
|
install_log_upd_clause(cls, ap, stack);
|
|
} while (cls++ != end);
|
|
}
|
|
|
|
#if PRECOMPUTE_REGADDRESS
|
|
|
|
#define arg_from_x(I) (((CELL *)(I))-XREGS)
|
|
|
|
#else
|
|
|
|
#define arg_from_x(I) (I)
|
|
|
|
#endif /* ALIGN_LONGS */
|
|
|
|
static AtomSwiEntry *
|
|
lookup_c(Term t, yamop *tab, COUNT entries)
|
|
{
|
|
AtomSwiEntry *cebase = (AtomSwiEntry *)tab;
|
|
|
|
while (cebase->Tag != t) {
|
|
entries--;
|
|
cebase++;
|
|
if (entries == 0)
|
|
return cebase;
|
|
}
|
|
return cebase;
|
|
}
|
|
|
|
static FuncSwiEntry *
|
|
lookup_f(Functor f, yamop *tab, COUNT entries)
|
|
{
|
|
FuncSwiEntry *febase = (FuncSwiEntry *)tab;
|
|
|
|
while (febase->Tag != f) {
|
|
entries--;
|
|
febase++;
|
|
if (entries == 0)
|
|
return febase;
|
|
}
|
|
return febase;
|
|
}
|
|
|
|
static COUNT
|
|
count_clauses_left(yamop *cl, PredEntry *ap)
|
|
{
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
LogUpdClause *c = ClauseCodeToLogUpdClause(cl);
|
|
COUNT i = 0;
|
|
|
|
while (c != NULL) {
|
|
i++;
|
|
c = c->ClNext;
|
|
}
|
|
return i;
|
|
} else if (ap->PredFlags & MegaClausePredFlag) {
|
|
MegaClause *mcl = ClauseCodeToMegaClause(ap->cs.p_code.FirstClause);
|
|
UInt ncls = mcl->ClSize/mcl->ClItemSize;
|
|
|
|
return (ncls-1)-((char *)cl-(char *)mcl->ClCode)/mcl->ClItemSize;
|
|
} else {
|
|
yamop *last = ap->cs.p_code.LastClause;
|
|
StaticClause *c;
|
|
COUNT i = 1;
|
|
|
|
c = ClauseCodeToStaticClause(cl);
|
|
while (c->ClCode != last) {
|
|
i++;
|
|
c = c->ClNext;
|
|
}
|
|
return i;
|
|
}
|
|
}
|
|
|
|
/*
|
|
We have jumped across indexing code. Check if we jumped within the current
|
|
indexing block, if we moved back to a parent, or if we jumped to a child.
|
|
*/
|
|
static ClausePointer
|
|
index_jmp(ClausePointer cur, ClausePointer parent, yamop *ipc, int is_lu, yamop *e_code)
|
|
{
|
|
if (cur.lui == NULL ||
|
|
ipc == FAILCODE ||
|
|
ipc == e_code ||
|
|
ipc->opc == Yap_opcode(_expand_clauses)
|
|
)
|
|
return cur;
|
|
if (is_lu) {
|
|
LogUpdIndex *lcur = cur.lui, *ncur;
|
|
/* check myself */
|
|
if (ipc >= lcur->ClCode && ipc < (yamop *)((CODEADDR)lcur+lcur->ClSize))
|
|
return cur;
|
|
/* check if I am returning back to a parent, eg
|
|
switch with intermediate node */
|
|
if (lcur->ParentIndex) {
|
|
LogUpdIndex *pcur = lcur->ParentIndex;
|
|
if (ipc >= pcur->ClCode && ipc < (yamop *)((CODEADDR)pcur+pcur->ClSize)) {
|
|
cur.lui = pcur;
|
|
return cur;
|
|
}
|
|
}
|
|
/* maybe I am a new group */
|
|
ncur = ClauseCodeToLogUpdIndex(ipc);
|
|
if (ncur->ParentIndex != lcur) {
|
|
#ifdef DEBUG
|
|
fprintf(stderr,"OOPS, bad parent in lu index\n");
|
|
#endif
|
|
cur.lui = NULL;
|
|
return cur;
|
|
}
|
|
cur.lui = ncur;
|
|
return cur;
|
|
} else {
|
|
StaticIndex *scur = parent.si, *ncur;
|
|
/* check myself */
|
|
if (!scur)
|
|
return cur;
|
|
if (ipc >= scur->ClCode &&
|
|
ipc < (yamop *)((CODEADDR)scur+scur->ClSize))
|
|
return cur;
|
|
ncur = ClauseCodeToStaticIndex(ipc);
|
|
if (ncur->ClPred == scur->ClPred) {
|
|
cur.si = ncur;
|
|
return cur;
|
|
}
|
|
/*
|
|
if (parent.si != cur.si) {
|
|
if (parent.si) {
|
|
StaticIndex *pcur = parent.si;
|
|
if (ipc >= pcur->ClCode && ipc < (yamop *)((CODEADDR)pcur+pcur->ClSize))
|
|
return parent;
|
|
}
|
|
}
|
|
cur.si = ncur;
|
|
return cur;
|
|
*/
|
|
cur.si = NULL;
|
|
return cur;
|
|
}
|
|
}
|
|
|
|
static ClausePointer
|
|
code_to_indexcl(yamop *ipc, int is_lu)
|
|
{
|
|
ClausePointer ret;
|
|
if (is_lu)
|
|
ret.lui = ClauseCodeToLogUpdIndex(ipc);
|
|
else
|
|
ret.si = ClauseCodeToStaticIndex(ipc);
|
|
return ret;
|
|
}
|
|
|
|
static yamop **
|
|
expand_index(struct intermediates *cint) {
|
|
/* first clause */
|
|
PredEntry *ap = cint->CurrentPred;
|
|
yamop *first, *last = NULL, *alt = NULL;
|
|
istack_entry *stack, *sp;
|
|
ClauseDef *cls = (ClauseDef *)H, *max;
|
|
int NClauses;
|
|
/* last clause to experiment with */
|
|
yamop *ipc;
|
|
/* labp should point at the beginning of the sequence */
|
|
yamop **labp = NULL;
|
|
ClausePointer parentcl;
|
|
Term t = TermNil, *s_reg = NULL;
|
|
int is_last_arg = TRUE;
|
|
int argno = 1;
|
|
int isfirstcl = TRUE;
|
|
/* this is will be used as a new PC */
|
|
CELL *top = (CELL *) TR;
|
|
UInt arity = 0;
|
|
UInt lab, fail_l, clleft, i = 0;
|
|
int is_lu = ap->PredFlags & LogUpdatePredFlag;
|
|
yamop *eblk = NULL;
|
|
yamop *e_code = (yamop *)&(ap->cs.p_code.ExpandCode);
|
|
|
|
ipc = ap->cs.p_code.TrueCodeOfPred;
|
|
first = ap->cs.p_code.FirstClause;
|
|
NClauses = ap->cs.p_code.NOfClauses;
|
|
sp = stack = (istack_entry *)top;
|
|
labelno = 1;
|
|
stack[0].pos = 0;
|
|
/* try to refine the interval using the indexing code */
|
|
|
|
parentcl = code_to_indexcl(ipc,is_lu);
|
|
while (ipc != NULL) {
|
|
op_numbers op;
|
|
|
|
op = Yap_op_from_opcode(ipc->opc);
|
|
switch(op) {
|
|
case _try_clause:
|
|
case _retry:
|
|
/* this clause had no indexing */
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
first = ClauseCodeToLogUpdClause(ipc->u.ld.d)->ClNext->ClCode;
|
|
} else if (ap->PredFlags & MegaClausePredFlag) {
|
|
MegaClause *mcl = ClauseCodeToMegaClause(ap->cs.p_code.FirstClause);
|
|
first = (yamop *)((char *)ipc->u.ld.d)+mcl->ClItemSize;
|
|
} else {
|
|
first = ClauseCodeToStaticClause(ipc->u.ld.d)->ClNext->ClCode;
|
|
}
|
|
isfirstcl = FALSE;
|
|
ipc = NEXTOP(ipc,ld);
|
|
break;
|
|
#if TABLING
|
|
case _table_try:
|
|
case _table_retry:
|
|
/* this clause had no indexing */
|
|
first = ClauseCodeToStaticClause(PREVOP(ipc->u.ld.d,ld))->ClNext->ClCode;
|
|
isfirstcl = FALSE;
|
|
ipc = NEXTOP(ipc,ld);
|
|
break;
|
|
#endif /* TABLING */
|
|
case _try_clause2:
|
|
case _try_clause3:
|
|
case _try_clause4:
|
|
case _retry2:
|
|
case _retry3:
|
|
case _retry4:
|
|
case _try_in:
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
first = ClauseCodeToLogUpdClause(ipc->u.l.l)->ClNext->ClCode;
|
|
} else if (ap->PredFlags & MegaClausePredFlag) {
|
|
MegaClause *mcl = ClauseCodeToMegaClause(ap->cs.p_code.FirstClause);
|
|
first = (yamop *)((char *)ipc->u.ld.d)+mcl->ClItemSize;
|
|
} else {
|
|
first = ClauseCodeToStaticClause(ipc->u.l.l)->ClNext->ClCode;
|
|
}
|
|
isfirstcl = FALSE;
|
|
ipc = NEXTOP(ipc,l);
|
|
break;
|
|
case _retry_me:
|
|
#ifdef TABLING
|
|
case _table_retry_me:
|
|
#endif
|
|
isfirstcl = FALSE;
|
|
case _try_me:
|
|
#ifdef TABLING
|
|
case _table_try_me:
|
|
#endif
|
|
/* ok, we found the start for an indexing block,
|
|
but we don't if we are going to operate here or not */
|
|
/* if we are to commit here, alt will tell us where */
|
|
alt = ipc->u.ld.d;
|
|
ipc = NEXTOP(ipc,ld);
|
|
/* start of a group, reset stack */
|
|
sp = stack;
|
|
stack[0].pos = 0;
|
|
break;
|
|
case _profiled_trust_me:
|
|
case _trust_me:
|
|
case _count_trust_me:
|
|
#ifdef TABLING
|
|
case _table_trust_me:
|
|
#endif /* TABLING */
|
|
/* we will commit to this group for sure */
|
|
ipc = NEXTOP(ipc,ld);
|
|
alt = NULL;
|
|
/* start of a group, reset stack */
|
|
sp = stack;
|
|
stack[0].pos = 0;
|
|
break;
|
|
case _trust:
|
|
/* we should never be here */
|
|
Yap_Error(INTERNAL_COMPILER_ERROR, TermNil, "found trust in expand_index");
|
|
labp = NULL;
|
|
ipc = NULL;
|
|
break;
|
|
case _stale_lu_index:
|
|
case _enter_lu_pred:
|
|
/* no useful info */
|
|
ipc = ipc->u.Ill.l1;
|
|
break;
|
|
case _trust_logical_pred:
|
|
/* no useful info */
|
|
ipc = NEXTOP(ipc,l);
|
|
break;
|
|
case _retry_profiled:
|
|
case _count_retry:
|
|
/* no useful info */
|
|
ipc = NEXTOP(ipc,l);
|
|
break;
|
|
case _jump:
|
|
/* just skip for now, but should worry about memory management */
|
|
ipc = ipc->u.l.l;
|
|
/* I don't know how up I will go */
|
|
parentcl.si = NULL;
|
|
break;
|
|
case _lock_lu:
|
|
case _procceed:
|
|
ipc = NEXTOP(ipc,p);
|
|
break;
|
|
case _unlock_lu:
|
|
ipc = NEXTOP(ipc,e);
|
|
break;
|
|
case _jump_if_var:
|
|
if (IsVarTerm(Deref(ARG1))) {
|
|
labp = &(ipc->u.l.l);
|
|
ipc = ipc->u.l.l;
|
|
parentcl = index_jmp(parentcl, parentcl, ipc, is_lu, e_code);
|
|
} else {
|
|
ipc = NEXTOP(ipc,l);
|
|
}
|
|
break;
|
|
case _jump_if_nonvar:
|
|
argno = arg_from_x(ipc->u.xll.x);
|
|
t = Deref(XREGS[argno]);
|
|
i = 0;
|
|
/* expand_index expects to find the new argument */
|
|
if (!IsVarTerm(t)) {
|
|
argno--;
|
|
labp = &(ipc->u.xll.l1);
|
|
ipc = ipc->u.xll.l1;
|
|
parentcl = index_jmp(parentcl, parentcl, ipc, is_lu, e_code);
|
|
} else {
|
|
ipc = NEXTOP(ipc,xll);
|
|
}
|
|
break;
|
|
/* instructions type EC */
|
|
/* instructions type e */
|
|
case _index_dbref:
|
|
t = AbsAppl(s_reg-1);
|
|
sp[-1].extra = t;
|
|
s_reg = NULL;
|
|
ipc = NEXTOP(ipc,e);
|
|
break;
|
|
case _index_blob:
|
|
t = MkIntTerm(s_reg[0]);
|
|
sp[-1].extra = AbsAppl(s_reg-1);
|
|
s_reg = NULL;
|
|
ipc = NEXTOP(ipc,e);
|
|
break;
|
|
/* instructions type e */
|
|
case _switch_on_type:
|
|
t = Deref(ARG1);
|
|
argno = 1;
|
|
i = 0;
|
|
if (IsVarTerm(t)) {
|
|
labp = &(ipc->u.llll.l4);
|
|
ipc = ipc->u.llll.l4;
|
|
} else if (IsPairTerm(t)) {
|
|
sp = push_stack(sp, 1, AbsPair(NULL), TermNil, cint);
|
|
s_reg = RepPair(t);
|
|
labp = &(ipc->u.llll.l1);
|
|
ipc = ipc->u.llll.l1;
|
|
} else if (IsApplTerm(t)) {
|
|
sp = push_stack(sp, 1, AbsAppl((CELL *)FunctorOfTerm(t)), TermNil, cint);
|
|
ipc = ipc->u.llll.l3;
|
|
} else {
|
|
sp = push_stack(sp, argno, t, TermNil, cint);
|
|
ipc = ipc->u.llll.l2;
|
|
}
|
|
parentcl = index_jmp(parentcl, parentcl, ipc, is_lu, e_code);
|
|
break;
|
|
case _switch_list_nl:
|
|
t = Deref(ARG1);
|
|
argno = 1;
|
|
i = 0;
|
|
if (IsVarTerm(t)) {
|
|
labp = &(ipc->u.ollll.l4);
|
|
ipc = ipc->u.ollll.l4;
|
|
} else if (IsPairTerm(t)) {
|
|
s_reg = RepPair(t);
|
|
labp = &(ipc->u.ollll.l1);
|
|
sp = push_stack(sp, 1, AbsPair(NULL), TermNil, cint);
|
|
ipc = ipc->u.ollll.l1;
|
|
} else if (t == TermNil) {
|
|
sp = push_stack(sp, 1, t, TermNil, cint);
|
|
ipc = ipc->u.ollll.l2;
|
|
} else {
|
|
Term tn;
|
|
|
|
if (IsApplTerm(t)) {
|
|
tn = AbsAppl((CELL *)FunctorOfTerm(t));
|
|
} else {
|
|
tn = t;
|
|
}
|
|
sp = push_stack(sp, argno, tn, TermNil, cint);
|
|
ipc = ipc->u.ollll.l3;
|
|
}
|
|
parentcl = index_jmp(parentcl, parentcl, ipc, is_lu, e_code);
|
|
break;
|
|
case _switch_on_arg_type:
|
|
argno = arg_from_x(ipc->u.xllll.x);
|
|
i = 0;
|
|
t = Deref(XREGS[argno]);
|
|
if (IsVarTerm(t)) {
|
|
labp = &(ipc->u.xllll.l4);
|
|
ipc = ipc->u.xllll.l4;
|
|
} else if (IsPairTerm(t)) {
|
|
s_reg = RepPair(t);
|
|
sp = push_stack(sp, argno, AbsPair(NULL), TermNil, cint);
|
|
labp = &(ipc->u.xllll.l1);
|
|
ipc = ipc->u.xllll.l1;
|
|
} else if (IsApplTerm(t)) {
|
|
sp = push_stack(sp, argno, AbsAppl((CELL *)FunctorOfTerm(t)), TermNil, cint);
|
|
ipc = ipc->u.xllll.l3;
|
|
} else {
|
|
sp = push_stack(sp, argno, t, TermNil, cint);
|
|
ipc = ipc->u.xllll.l2;
|
|
}
|
|
parentcl = index_jmp(parentcl, parentcl, ipc, is_lu, e_code);
|
|
break;
|
|
case _switch_on_sub_arg_type:
|
|
i = ipc->u.sllll.s;
|
|
t = Deref(s_reg[i]);
|
|
if (i != arity-1) is_last_arg = FALSE;
|
|
t = Deref(s_reg[i]);
|
|
if (IsVarTerm(t)) {
|
|
labp = &(ipc->u.sllll.l4);
|
|
ipc = ipc->u.sllll.l4;
|
|
i++;
|
|
} else if (IsPairTerm(t)) {
|
|
s_reg = RepPair(t);
|
|
sp = push_stack(sp, -i-1, AbsPair(NULL), TermNil, cint);
|
|
labp = &(ipc->u.sllll.l1);
|
|
ipc = ipc->u.sllll.l1;
|
|
i = 0;
|
|
} else if (IsApplTerm(t)) {
|
|
sp = push_stack(sp, -i-1, AbsAppl((CELL *)FunctorOfTerm(t)), TermNil, cint);
|
|
ipc = ipc->u.sllll.l3;
|
|
i = 0;
|
|
} else {
|
|
/* We don't push stack here, instead we go over to next argument
|
|
sp = push_stack(sp, -i-1, t, cint);
|
|
*/
|
|
sp = push_stack(sp, -i-1, t, TermNil, cint);
|
|
ipc = ipc->u.sllll.l2;
|
|
i++;
|
|
}
|
|
parentcl = index_jmp(parentcl, parentcl, ipc, is_lu, e_code);
|
|
break;
|
|
case _if_not_then:
|
|
labp = NULL;
|
|
ipc = NULL;
|
|
break;
|
|
/* instructions type ollll */
|
|
case _switch_on_func:
|
|
case _if_func:
|
|
case _go_on_func:
|
|
{
|
|
FuncSwiEntry *fe;
|
|
yamop *newpc;
|
|
Functor f;
|
|
|
|
s_reg = RepAppl(t);
|
|
f = (Functor)(*s_reg++);
|
|
if (op == _switch_on_func) {
|
|
fe = lookup_f_hash(f,ipc->u.sssl.l,ipc->u.sssl.s);
|
|
} else {
|
|
fe = lookup_f(f,ipc->u.sssl.l,ipc->u.sssl.s);
|
|
}
|
|
newpc = (yamop *)(fe->Label);
|
|
|
|
labp = (yamop **)(&(fe->Label));
|
|
if (newpc == e_code) {
|
|
/* we found it */
|
|
parentcl = code_to_indexcl(ipc->u.sssl.l,is_lu);
|
|
ipc = NULL;
|
|
} else {
|
|
ClausePointer npar = code_to_indexcl(ipc->u.sssl.l,is_lu);
|
|
ipc = newpc;
|
|
parentcl = index_jmp(npar, parentcl, ipc, is_lu, e_code);
|
|
}
|
|
}
|
|
break;
|
|
case _switch_on_cons:
|
|
case _if_cons:
|
|
case _go_on_cons:
|
|
{
|
|
AtomSwiEntry *ae;
|
|
|
|
if (op == _switch_on_cons) {
|
|
ae = lookup_c_hash(t,ipc->u.sssl.l,ipc->u.sssl.s);
|
|
} else {
|
|
ae = lookup_c(t,ipc->u.sssl.l,ipc->u.sssl.s);
|
|
}
|
|
|
|
labp = (yamop **)(&(ae->Label));
|
|
if (ae->Label == (CELL)e_code) {
|
|
/* we found it */
|
|
parentcl = code_to_indexcl(ipc->u.sssl.l,is_lu);
|
|
ipc = NULL;
|
|
} else {
|
|
ClausePointer npar = code_to_indexcl(ipc->u.sssl.l,is_lu);
|
|
ipc = (yamop *)(ae->Label);
|
|
parentcl = index_jmp(npar, parentcl, ipc, is_lu, e_code);
|
|
}
|
|
}
|
|
break;
|
|
case _expand_index:
|
|
case _expand_clauses:
|
|
if (alt != NULL && ap->PredFlags & LogUpdatePredFlag) {
|
|
op_numbers fop = Yap_op_from_opcode(alt->opc);
|
|
if (fop == _enter_lu_pred)
|
|
alt = alt->u.Ill.l1;
|
|
if (fop == _trust_logical_pred)
|
|
alt = NEXTOP(alt,l);
|
|
}
|
|
ipc = NULL;
|
|
break;
|
|
case _op_fail:
|
|
ipc = alt;
|
|
alt = NULL;
|
|
break;
|
|
default:
|
|
if (alt == NULL) {
|
|
Yap_Error(INTERNAL_COMPILER_ERROR,t,"unexpected instruction %d at expand_index ", op);
|
|
labp = NULL;
|
|
ipc = NULL;
|
|
} else {
|
|
/* backtrack */
|
|
first = alt->u.ld.d;
|
|
ipc = alt;
|
|
alt = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* if there was an overflow while generating the code, make sure
|
|
S is still correct */
|
|
if (is_lu) {
|
|
cint->current_cl.lui = parentcl.lui;
|
|
} else {
|
|
cint->current_cl.si = parentcl.si;
|
|
}
|
|
if (s_reg != NULL)
|
|
S = s_reg;
|
|
#ifdef TABLING
|
|
/* handle tabling hack that insertes a failcode,
|
|
this really corresponds to not having any more clauses */
|
|
if (alt == TRUSTFAILCODE)
|
|
alt = NULL;
|
|
#endif
|
|
if (alt == NULL) {
|
|
/* oops, we are at last clause */
|
|
fail_l = (UInt)FAILCODE;
|
|
clleft = 0;
|
|
last = ap->cs.p_code.LastClause;
|
|
} else {
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
op_numbers op = Yap_op_from_opcode(alt->opc);
|
|
if (op == _trust_logical_pred) {
|
|
last = NEXTOP(alt,l)->u.ld.d;
|
|
} else if (op >= _retry2 && op <= _retry4) {
|
|
last = alt->u.l.l;
|
|
} else {
|
|
last = alt->u.ld.d;
|
|
}
|
|
} else {
|
|
op_numbers op = Yap_op_from_opcode(alt->opc);
|
|
if (op == _retry || op == _trust) {
|
|
last = alt->u.ld.d;
|
|
#ifdef TABLING
|
|
} else if (op == _table_retry || op == _table_trust) {
|
|
last = PREVOP(alt->u.ld.d,ld);
|
|
#endif /* TABLING */
|
|
} else if (op >= _retry2 && op <= _retry4) {
|
|
last = alt->u.l.l;
|
|
}
|
|
}
|
|
fail_l = (UInt)alt;
|
|
clleft = count_clauses_left(last,ap);
|
|
}
|
|
|
|
if (Yap_op_from_opcode((*labp)->opc) == _expand_clauses) {
|
|
/* ok, we know how many clauses */
|
|
yamop *ipc = *labp;
|
|
/* check all slots, not just the ones with values */
|
|
COUNT nclauses = ipc->u.sp.s1;
|
|
yamop **clp = (yamop **)NEXTOP(ipc,sp);
|
|
|
|
eblk = cint->expand_block = ipc;
|
|
if (cls+2*nclauses > (ClauseDef *)(ASP-4096)) {
|
|
/* tell how much space we need (worst case) */
|
|
Yap_Error_Size += 2*NClauses*sizeof(ClauseDef);
|
|
/* grow stack */
|
|
save_machine_regs();
|
|
longjmp(cint->CompilerBotch,3);
|
|
}
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
max = install_log_upd_clauseseq(cls, ap, stack, clp, clp+nclauses);
|
|
} else {
|
|
max = install_clauseseq(cls, ap, stack, clp, clp+nclauses);
|
|
}
|
|
} else {
|
|
cint->expand_block = NULL;
|
|
if (cls+2*NClauses > (ClauseDef *)(ASP-4096)) {
|
|
/* tell how much space we need (worst case) */
|
|
Yap_Error_Size += 2*NClauses*sizeof(ClauseDef);
|
|
save_machine_regs();
|
|
longjmp(cint->CompilerBotch,3);
|
|
}
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
max = install_log_upd_clauses(cls, ap, stack, first, last);
|
|
} else {
|
|
max = install_clauses(cls, ap, stack, first, last);
|
|
}
|
|
#if DEBUG_EXPAND
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
fprintf(stderr,"vsc +");
|
|
} else {
|
|
fprintf(stderr,"vsc ");
|
|
}
|
|
fprintf(stderr," : expanding %d out of %d\n", (max-cls)+1,NClauses);
|
|
#endif
|
|
}
|
|
/* don't count last clause if you don't have to */
|
|
if (alt && max->Code == last) max--;
|
|
if (max < cls && labp != NULL) {
|
|
*labp = FAILCODE;
|
|
return labp;
|
|
}
|
|
cint->freep = (char *)(max+1);
|
|
cint->CodeStart = cint->BlobsStart = cint->cpc = cint->icpc = NULL;
|
|
|
|
if (!IsVarTerm(sp[-1].val) && sp > stack) {
|
|
if (IsAtomOrIntTerm(sp[-1].val)) {
|
|
if (s_reg == NULL) { /* we have not yet looked into terms */
|
|
lab = do_index(cls, max, cint, argno+1, fail_l, isfirstcl, clleft, top);
|
|
} else {
|
|
UInt arity = 0;
|
|
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
reinstall_log_upd_clauses(cls, max, ap, stack);
|
|
} else {
|
|
reinstall_clauses(cls, max, ap, stack);
|
|
}
|
|
sp--;
|
|
while (sp > stack) {
|
|
Term t = sp[-1].val;
|
|
if (IsApplTerm(t)) {
|
|
Functor f = (Functor)RepAppl(t);
|
|
if (!IsExtensionFunctor(f)) {
|
|
arity = ArityOfFunctor(f);
|
|
break;
|
|
} else {
|
|
sp--;
|
|
}
|
|
} else if (IsPairTerm(t)) {
|
|
arity = 2;
|
|
break;
|
|
} else {
|
|
sp--;
|
|
}
|
|
}
|
|
lab = do_compound_index(cls, max, s_reg, cint, i, arity, argno, fail_l, isfirstcl, is_last_arg, clleft, top, FALSE);
|
|
}
|
|
} else if (IsPairTerm(sp[-1].val) && sp > stack) {
|
|
lab = do_compound_index(cls, max, s_reg, cint, i, 2, argno, fail_l, isfirstcl, is_last_arg, clleft, top, FALSE);
|
|
} else {
|
|
Functor f = (Functor)RepAppl(sp[-1].val);
|
|
/* we are continuing within a compound term */
|
|
if (IsExtensionFunctor(f)) {
|
|
lab = do_index(cls, max, cint, argno+1, fail_l, isfirstcl, clleft, top);
|
|
} else {
|
|
lab = do_compound_index(cls, max, s_reg, cint, i, ArityOfFunctor(f), argno, fail_l, isfirstcl, is_last_arg, clleft, top, FALSE);
|
|
}
|
|
}
|
|
} else {
|
|
if (argno == ap->ArityOfPE) {
|
|
lab =
|
|
do_var_clauses(cls, max, FALSE, cint, isfirstcl, clleft, fail_l, ap->ArityOfPE+1);
|
|
} else {
|
|
lab = do_index(cls, max, cint, argno+1, fail_l, isfirstcl, clleft, top);
|
|
}
|
|
}
|
|
if (labp && !(lab & 1))
|
|
*labp = (yamop *)lab; /* in case we have a single clause */
|
|
return labp;
|
|
}
|
|
|
|
|
|
static yamop *
|
|
ExpandIndex(PredEntry *ap, int ExtraArgs) {
|
|
yamop *indx_out, *expand_clauses;
|
|
yamop **labp;
|
|
int cb;
|
|
struct intermediates cint;
|
|
|
|
if ((cb = setjmp(cint.CompilerBotch)) == 3) {
|
|
restore_machine_regs();
|
|
/* grow stack */
|
|
recover_from_failed_susp_on_cls(&cint, 0);
|
|
Yap_gcl(Yap_Error_Size, ap->ArityOfPE+ExtraArgs, ENV, CP);
|
|
} else if (cb == 2) {
|
|
restore_machine_regs();
|
|
Yap_Error_Size = recover_from_failed_susp_on_cls(&cint, Yap_Error_Size);
|
|
if (!Yap_growheap(FALSE, Yap_Error_Size, NULL)) {
|
|
save_machine_regs();
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
Yap_kill_iblock((ClauseUnion *)ClauseCodeToLogUpdIndex(ap->cs.p_code.TrueCodeOfPred),NULL, ap);
|
|
} else {
|
|
StaticIndex *cl;
|
|
|
|
cl = ClauseCodeToStaticIndex(ap->cs.p_code.TrueCodeOfPred);
|
|
Yap_kill_iblock((ClauseUnion *)ClauseCodeToStaticIndex(ap->cs.p_code.TrueCodeOfPred),NULL, ap);
|
|
}
|
|
ap->OpcodeOfPred = INDEX_OPCODE;
|
|
ap->CodeOfPred = ap->cs.p_code.TrueCodeOfPred = (yamop *)(&(ap->OpcodeOfPred));
|
|
Yap_Error(OUT_OF_HEAP_ERROR, TermNil, Yap_ErrorMessage);
|
|
return FAILCODE;
|
|
}
|
|
} else if (cb == 4) {
|
|
restore_machine_regs();
|
|
if (!Yap_growtrail(Yap_Error_Size, FALSE)) {
|
|
save_machine_regs();
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
Yap_kill_iblock((ClauseUnion *)ClauseCodeToLogUpdIndex(ap->cs.p_code.TrueCodeOfPred),NULL, ap);
|
|
} else {
|
|
StaticIndex *cl;
|
|
|
|
cl = ClauseCodeToStaticIndex(ap->cs.p_code.TrueCodeOfPred);
|
|
Yap_kill_iblock((ClauseUnion *)cl, NULL, ap);
|
|
}
|
|
return FAILCODE;
|
|
}
|
|
}
|
|
restart_index:
|
|
cint.CodeStart = cint.cpc = cint.BlobsStart = cint.icpc = NIL;
|
|
cint.CurrentPred = ap;
|
|
Yap_ErrorMessage = NULL;
|
|
Yap_Error_Size = 0;
|
|
if (P->opc == Yap_opcode(_expand_clauses)) {
|
|
expand_clauses = P;
|
|
} else {
|
|
expand_clauses = NULL;
|
|
}
|
|
#ifdef DEBUG
|
|
if (Yap_Option['i' - 'a' + 1]) {
|
|
Term tmod = ap->ModuleOfPred;
|
|
if (!tmod) tmod = TermProlog;
|
|
Yap_DebugPutc(Yap_c_error_stream,'>');
|
|
Yap_DebugPutc(Yap_c_error_stream,'\t');
|
|
Yap_plwrite(tmod, Yap_DebugPutc, 0);
|
|
Yap_DebugPutc(Yap_c_error_stream,':');
|
|
if (ap->ModuleOfPred == IDB_MODULE) {
|
|
Term t = Deref(ARG1);
|
|
if (IsAtomTerm(t)) {
|
|
Yap_plwrite(t, Yap_DebugPutc, 0);
|
|
} else if (IsIntegerTerm(t)) {
|
|
Yap_plwrite(t, Yap_DebugPutc, 0);
|
|
} else {
|
|
Functor f = FunctorOfTerm(t);
|
|
Atom At = NameOfFunctor(f);
|
|
Yap_plwrite(MkAtomTerm(At), Yap_DebugPutc, 0);
|
|
Yap_DebugPutc(Yap_c_error_stream,'/');
|
|
Yap_plwrite(MkIntTerm(ArityOfFunctor(f)), Yap_DebugPutc, 0);
|
|
}
|
|
} else {
|
|
if (ap->ArityOfPE == 0) {
|
|
Atom At = (Atom)ap->FunctorOfPred;
|
|
Yap_plwrite(MkAtomTerm(At), Yap_DebugPutc, 0);
|
|
} else {
|
|
Functor f = ap->FunctorOfPred;
|
|
Atom At = NameOfFunctor(f);
|
|
Yap_plwrite(MkAtomTerm(At), Yap_DebugPutc, 0);
|
|
Yap_DebugPutc(Yap_c_error_stream,'/');
|
|
Yap_plwrite(MkIntTerm(ArityOfFunctor(f)), Yap_DebugPutc, 0);
|
|
}
|
|
}
|
|
Yap_DebugPutc(Yap_c_error_stream,'\n');
|
|
}
|
|
#endif
|
|
if ((labp = expand_index(&cint)) == NULL) {
|
|
return FAILCODE;
|
|
}
|
|
if (*labp == FAILCODE) {
|
|
return FAILCODE;
|
|
}
|
|
#ifdef DEBUG
|
|
if (Yap_Option['i' - 'a' + 1]) {
|
|
Yap_ShowCode(&cint);
|
|
}
|
|
#endif
|
|
/* globals for assembler */
|
|
IPredArity = ap->ArityOfPE;
|
|
if (cint.CodeStart) {
|
|
if ((indx_out = Yap_assemble(ASSEMBLING_EINDEX, TermNil, ap, FALSE, &cint)) == NULL) {
|
|
if (!Yap_growheap(FALSE, Yap_Error_Size, NULL)) {
|
|
Yap_Error(OUT_OF_HEAP_ERROR, TermNil, Yap_ErrorMessage);
|
|
return FAILCODE;
|
|
}
|
|
goto restart_index;
|
|
}
|
|
} else {
|
|
/* single case */
|
|
return *labp;
|
|
}
|
|
if (indx_out == NULL) {
|
|
return FAILCODE;
|
|
}
|
|
*labp = indx_out;
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
/* add to head of current code children */
|
|
LogUpdIndex *ic = cint.current_cl.lui,
|
|
*nic = ClauseCodeToLogUpdIndex(indx_out);
|
|
if (ic == NULL)
|
|
ic = (LogUpdIndex *)Yap_find_owner_index((yamop *)labp, ap);
|
|
/* insert myself in the indexing code chain */
|
|
nic->SiblingIndex = ic->ChildIndex;
|
|
nic->PrevSiblingIndex = NULL;
|
|
if (ic->ChildIndex) {
|
|
ic->ChildIndex->PrevSiblingIndex = nic;
|
|
}
|
|
nic->ParentIndex = ic;
|
|
nic->ClFlags &= ~SwitchRootMask;
|
|
ic->ChildIndex = nic;
|
|
ic->ClRefCount++;
|
|
} else {
|
|
/* add to head of current code children */
|
|
StaticIndex *ic = cint.current_cl.si,
|
|
*nic = ClauseCodeToStaticIndex(indx_out);
|
|
if (ic == NULL)
|
|
ic = (StaticIndex *)Yap_find_owner_index((yamop *)labp, ap);
|
|
/* insert myself in the indexing code chain */
|
|
nic->SiblingIndex = ic->ChildIndex;
|
|
ic->ChildIndex = nic;
|
|
}
|
|
if (expand_clauses) {
|
|
P = indx_out;
|
|
recover_ecls_block(expand_clauses);
|
|
}
|
|
return indx_out;
|
|
}
|
|
|
|
yamop *
|
|
Yap_ExpandIndex(PredEntry *ap, UInt nargs) {
|
|
return ExpandIndex(ap, nargs);
|
|
}
|
|
|
|
static path_stack_entry *
|
|
push_path(path_stack_entry *sp, yamop **pipc, ClauseDef *clp, struct intermediates *cint)
|
|
{
|
|
if (sp+1 > (path_stack_entry *)Yap_TrailTop) {
|
|
save_machine_regs();
|
|
longjmp(cint->CompilerBotch,4);
|
|
}
|
|
sp->flag = pc_entry;
|
|
sp->u.pce.pi_pc = pipc;
|
|
sp->u.pce.code = clp->Code;
|
|
sp->u.pce.current_code = clp->CurrentCode;
|
|
sp->u.pce.work_pc = clp->u.WorkPC;
|
|
sp->u.pce.tag = clp->Tag;
|
|
return sp+1;
|
|
}
|
|
|
|
static path_stack_entry *
|
|
fetch_new_block(path_stack_entry *sp, yamop **pipc, PredEntry *ap)
|
|
{
|
|
/* add current position */
|
|
sp->flag = block_entry;
|
|
sp->u.cle.entry_code = pipc;
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
sp->u.cle.block = (ClauseUnion *)ClauseCodeToLogUpdIndex(*pipc);
|
|
} else {
|
|
sp->u.cle.block = (ClauseUnion *)ClauseCodeToStaticIndex(*pipc);
|
|
}
|
|
return sp+1;
|
|
}
|
|
|
|
static path_stack_entry *
|
|
init_block_stack(path_stack_entry *sp, yamop *ipc, PredEntry *ap)
|
|
{
|
|
/* add current position */
|
|
|
|
sp->flag = block_entry;
|
|
sp->u.cle.entry_code = NULL;
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
sp->u.cle.block = (ClauseUnion *)ClauseCodeToLogUpdIndex(ipc);
|
|
} else {
|
|
sp->u.cle.block = (ClauseUnion *)ClauseCodeToStaticIndex(ipc);
|
|
}
|
|
return sp+1;
|
|
}
|
|
|
|
static path_stack_entry *
|
|
cross_block(path_stack_entry *sp, yamop **pipc, PredEntry *ap)
|
|
{
|
|
yamop *ipc = *pipc;
|
|
path_stack_entry *tsp = sp;
|
|
ClauseUnion *block;
|
|
|
|
do {
|
|
UInt bsize;
|
|
while ((--tsp)->flag != block_entry);
|
|
block = tsp->u.cle.block;
|
|
if (block->lui.ClFlags & LogUpdMask)
|
|
bsize = block->lui.ClSize;
|
|
else
|
|
bsize = block->si.ClSize;
|
|
if (ipc > (yamop *)block &&
|
|
ipc < (yamop *)((CODEADDR)block + bsize)) {
|
|
path_stack_entry *nsp = tsp+1;
|
|
for (;tsp<sp;tsp++) {
|
|
if (tsp->flag == pc_entry) {
|
|
if (nsp != tsp) {
|
|
nsp->flag = pc_entry;
|
|
nsp->u.pce.pi_pc = tsp->u.pce.pi_pc;
|
|
nsp->u.pce.code = tsp->u.pce.code;
|
|
nsp->u.pce.current_code = tsp->u.pce.current_code;
|
|
nsp->u.pce.work_pc = tsp->u.pce.work_pc;
|
|
nsp->u.pce.tag = tsp->u.pce.tag;
|
|
}
|
|
nsp++;
|
|
}
|
|
}
|
|
return nsp;
|
|
}
|
|
} while (tsp->u.cle.entry_code != NULL);
|
|
/* moved to a new block */
|
|
return fetch_new_block(sp, pipc, ap);
|
|
}
|
|
|
|
|
|
static yamop *
|
|
pop_path(path_stack_entry **spp, ClauseDef *clp, PredEntry *ap)
|
|
{
|
|
path_stack_entry *sp = *spp;
|
|
yamop *nipc;
|
|
|
|
while ((--sp)->flag != pc_entry);
|
|
*spp = sp;
|
|
clp->Code = sp->u.pce.code;
|
|
clp->CurrentCode = sp->u.pce.current_code;
|
|
clp->u.WorkPC = sp->u.pce.work_pc;
|
|
clp->Tag = sp->u.pce.tag;
|
|
if (sp->u.pce.pi_pc == NULL) {
|
|
*spp = sp;
|
|
return NULL;
|
|
}
|
|
nipc = *(sp->u.pce.pi_pc);
|
|
*spp = cross_block(sp, sp->u.pce.pi_pc, ap);
|
|
return nipc;
|
|
}
|
|
|
|
static int
|
|
table_fe_overflow(yamop *pc, Functor f)
|
|
{
|
|
if (pc->u.sssl.s <= MIN_HASH_ENTRIES) {
|
|
/* we cannot expand otherwise */
|
|
COUNT i;
|
|
FuncSwiEntry *csw = (FuncSwiEntry *)pc->u.sssl.l;
|
|
|
|
for (i=0; i < pc->u.sssl.s; i++,csw++) {
|
|
if (csw->Tag == f) return FALSE;
|
|
}
|
|
return TRUE;
|
|
} else {
|
|
COUNT free = pc->u.sssl.s-pc->u.sssl.e;
|
|
return (!free || pc->u.sssl.s/free > 4);
|
|
}
|
|
}
|
|
|
|
static int
|
|
table_ae_overflow(yamop *pc, Term at)
|
|
{
|
|
if (pc->u.sssl.s <= MIN_HASH_ENTRIES) {
|
|
/* check if we are already there */
|
|
COUNT i;
|
|
AtomSwiEntry *csw = (AtomSwiEntry *)pc->u.sssl.l;
|
|
|
|
for (i=0; i < pc->u.sssl.s; i++,csw++) {
|
|
if (csw->Tag == at) return FALSE;
|
|
}
|
|
return TRUE;
|
|
} else {
|
|
COUNT free = pc->u.sssl.s-pc->u.sssl.e;
|
|
return (!free || pc->u.sssl.s/free > 4);
|
|
}
|
|
}
|
|
|
|
static void
|
|
replace_index_block(ClauseUnion *parent_block, yamop *cod, yamop *ncod, PredEntry *ap)
|
|
{
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
LogUpdIndex
|
|
*cl = ClauseCodeToLogUpdIndex(cod),
|
|
*ncl = ClauseCodeToLogUpdIndex(ncod),
|
|
*c = parent_block->lui.ChildIndex;
|
|
ncl->SiblingIndex = cl->SiblingIndex;
|
|
ncl->PrevSiblingIndex = cl->PrevSiblingIndex;
|
|
ncl->ClRefCount = cl->ClRefCount;
|
|
ncl->ChildIndex = cl->ChildIndex;
|
|
ncl->ParentIndex = cl->ParentIndex;
|
|
ncl->ClPred = cl->ClPred;
|
|
INIT_LOCK(ncl->ClLock);
|
|
if (c == cl) {
|
|
parent_block->lui.ChildIndex = ncl;
|
|
} else {
|
|
cl->PrevSiblingIndex->SiblingIndex = ncl;
|
|
}
|
|
if (cl->SiblingIndex) {
|
|
cl->SiblingIndex->PrevSiblingIndex = ncl;
|
|
}
|
|
c = cl->ChildIndex;
|
|
while (c != NULL) {
|
|
c->ParentIndex = ncl;
|
|
c = c->SiblingIndex;
|
|
}
|
|
Yap_InformOfRemoval((CODEADDR)cl);
|
|
Yap_FreeCodeSpace((char *)cl);
|
|
} else {
|
|
StaticIndex
|
|
*cl = ClauseCodeToStaticIndex(cod),
|
|
*ncl = ClauseCodeToStaticIndex(ncod),
|
|
*c = parent_block->si.ChildIndex;
|
|
ncl->SiblingIndex = cl->SiblingIndex;
|
|
ncl->ClPred = cl->ClPred;
|
|
if (c == cl) {
|
|
parent_block->si.ChildIndex = ncl;
|
|
} else {
|
|
while (c->SiblingIndex != cl) {
|
|
c = c->SiblingIndex;
|
|
}
|
|
c->SiblingIndex = ncl;
|
|
}
|
|
Yap_InformOfRemoval((CODEADDR)cl);
|
|
Yap_FreeCodeSpace((char *)cl);
|
|
}
|
|
}
|
|
|
|
static AtomSwiEntry *
|
|
expand_ctable(yamop *pc, ClauseUnion *blk, struct intermediates *cint, Term at)
|
|
{
|
|
PredEntry *ap = cint->CurrentPred;
|
|
int n = pc->u.sssl.s, i, i0 = n;
|
|
UInt fail_l = Zero;
|
|
AtomSwiEntry *old_ae = (AtomSwiEntry *)(pc->u.sssl.l), *target;
|
|
|
|
if (n > MIN_HASH_ENTRIES) {
|
|
AtomSwiEntry *tmp = old_ae;
|
|
int i;
|
|
|
|
n = 1;
|
|
for (i = 0; i < pc->u.sssl.s; i++,tmp++) {
|
|
if (tmp->Tag != Zero) n++;
|
|
else fail_l = tmp->Label;
|
|
}
|
|
} else {
|
|
fail_l = old_ae[n].Label;
|
|
n++;
|
|
}
|
|
if (n > MIN_HASH_ENTRIES) {
|
|
int cases = MIN_HASH_ENTRIES, i, n0;
|
|
n0 = n+1+n/4;
|
|
while (cases < n0) cases *= 2;
|
|
if (cases == pc->u.sssl.s) {
|
|
return fetch_centry(old_ae, at, n-1, n);
|
|
}
|
|
/* initialise */
|
|
target = (AtomSwiEntry *)emit_switch_space(cases, sizeof(AtomSwiEntry), cint);
|
|
pc->opc = Yap_opcode(_switch_on_cons);
|
|
pc->u.sssl.s = cases;
|
|
for (i=0; i<cases; i++) {
|
|
target[i].Tag = Zero;
|
|
target[i].Label = fail_l;
|
|
}
|
|
} else {
|
|
pc->opc = Yap_opcode(_if_cons);
|
|
pc->u.sssl.s = n;
|
|
target = (AtomSwiEntry *)emit_switch_space(n+1, sizeof(AtomSwiEntry), cint);
|
|
target[n].Tag = Zero;
|
|
target[n].Label = fail_l;
|
|
}
|
|
for (i = 0; i < i0; i++,old_ae++) {
|
|
Term tag = old_ae->Tag;
|
|
|
|
if (tag != Zero) {
|
|
AtomSwiEntry *ics = fetch_centry(target, tag, i, n);
|
|
ics->Tag = tag;
|
|
ics->Label = old_ae->Label;
|
|
}
|
|
}
|
|
/* support for threads */
|
|
if (blk)
|
|
replace_index_block(blk, pc->u.sssl.l, (yamop *)target, ap);
|
|
pc->u.sssl.l = (yamop *)target;
|
|
return fetch_centry(target, at, n-1, n);
|
|
}
|
|
|
|
static FuncSwiEntry *
|
|
expand_ftable(yamop *pc, ClauseUnion *blk, struct intermediates *cint, Functor f)
|
|
{
|
|
PredEntry *ap = cint->CurrentPred;
|
|
int n = pc->u.sssl.s, i, i0 = n;
|
|
UInt fail_l = Zero;
|
|
FuncSwiEntry *old_fe = (FuncSwiEntry *)(pc->u.sssl.l), *target;
|
|
|
|
if (n > MIN_HASH_ENTRIES) {
|
|
FuncSwiEntry *tmp = old_fe;
|
|
int i;
|
|
|
|
n = 1;
|
|
for (i = 0; i < pc->u.sssl.s; i++,tmp++) {
|
|
if (tmp->Tag != Zero) n++;
|
|
else fail_l = tmp->Label;
|
|
}
|
|
} else {
|
|
fail_l = old_fe[n].Label;
|
|
n++;
|
|
}
|
|
if (n > MIN_HASH_ENTRIES) {
|
|
int cases = MIN_HASH_ENTRIES, i, n0;
|
|
n0 = n+1+n/4;
|
|
while (cases < n0) cases *= 2;
|
|
|
|
if (cases == pc->u.sssl.s) {
|
|
return fetch_fentry(old_fe, f, n-1, n);
|
|
}
|
|
pc->opc = Yap_opcode(_switch_on_func);
|
|
pc->u.sssl.s = cases;
|
|
pc->u.sssl.e = n;
|
|
pc->u.sssl.w = 0;
|
|
/* initialise */
|
|
target = (FuncSwiEntry *)emit_switch_space(cases, sizeof(FuncSwiEntry), cint);
|
|
for (i=0; i<cases; i++) {
|
|
target[i].Tag = NULL;
|
|
target[i].Label = fail_l;
|
|
}
|
|
} else {
|
|
pc->opc = Yap_opcode(_if_func);
|
|
pc->u.sssl.s = n;
|
|
pc->u.sssl.e = n;
|
|
pc->u.sssl.w = 0;
|
|
target = (FuncSwiEntry *)emit_switch_space(n+1, sizeof(FuncSwiEntry), cint);
|
|
target[n].Tag = Zero;
|
|
target[n].Label = fail_l;
|
|
}
|
|
for (i = 0; i < i0; i++,old_fe++) {
|
|
Functor f = old_fe->Tag;
|
|
|
|
if (f != NULL) {
|
|
FuncSwiEntry *ifs = fetch_fentry(target, f, i, n);
|
|
ifs->Tag = old_fe->Tag;
|
|
ifs->Label = old_fe->Label;
|
|
}
|
|
}
|
|
replace_index_block(blk, pc->u.sssl.l, (yamop *)target, ap);
|
|
pc->u.sssl.l = (yamop *)target;
|
|
return fetch_fentry(target, f, n-1, n);
|
|
}
|
|
|
|
static ClauseUnion *
|
|
current_block(path_stack_entry *sp)
|
|
{
|
|
while ((--sp)->flag != block_entry);
|
|
return sp->u.cle.block;
|
|
}
|
|
|
|
static path_stack_entry *
|
|
kill_block(path_stack_entry *sp, PredEntry *ap)
|
|
{
|
|
while ((--sp)->flag != block_entry);
|
|
if (sp->u.cle.entry_code == NULL) {
|
|
Yap_kill_iblock(sp->u.cle.block, NULL, ap);
|
|
} else {
|
|
path_stack_entry *nsp = sp;
|
|
|
|
while ((--nsp)->flag != block_entry);
|
|
Yap_kill_iblock(sp->u.cle.block, nsp->u.cle.block, ap);
|
|
*sp->u.cle.entry_code = (yamop *)&(ap->cs.p_code.ExpandCode);
|
|
}
|
|
return sp;
|
|
}
|
|
|
|
static path_stack_entry *
|
|
kill_clause(yamop *ipc, yamop *bg, yamop *lt, path_stack_entry *sp0, PredEntry *ap)
|
|
{
|
|
LogUpdIndex *blk;
|
|
yamop *start;
|
|
op_numbers op0;
|
|
path_stack_entry *sp = sp0;
|
|
|
|
while ((--sp)->flag != block_entry);
|
|
blk = (LogUpdIndex *)(sp->u.cle.block);
|
|
start = blk->ClCode;
|
|
op0 = Yap_op_from_opcode(start->opc);
|
|
while (op0 == _jump_if_nonvar) {
|
|
start = NEXTOP(start, xll);
|
|
op0 = Yap_op_from_opcode(start->opc);
|
|
}
|
|
if ((op0 != _enter_lu_pred && op0 != _stale_lu_index)
|
|
|| !start->u.Ill.s /* weird block */) {
|
|
return kill_block(sp+1, ap);
|
|
} else {
|
|
/* decrease number of clauses */
|
|
start->u.Ill.s--;
|
|
if (start->u.Ill.s == 1) {
|
|
yamop *codep = start->u.Ill.l1;
|
|
|
|
/* search for the one clause that has been left */
|
|
while (TRUE) {
|
|
op_numbers op = Yap_op_from_opcode(codep->opc);
|
|
switch (op) {
|
|
case _trust:
|
|
case _retry:
|
|
case _try_clause:
|
|
/* kill block and replace by this single clause */
|
|
if (codep->u.ld.d != FAILCODE) {
|
|
path_stack_entry *nsp;
|
|
LogUpdClause *tgl = ClauseCodeToLogUpdClause(codep->u.ld.d);
|
|
|
|
if (tgl->ClFlags & ErasedMask ||
|
|
IN_BETWEEN(bg, codep->u.ld.d, lt)) {
|
|
codep = NEXTOP(codep,ld);
|
|
break;
|
|
}
|
|
nsp = sp;
|
|
while ((--nsp)->flag != block_entry);
|
|
*sp->u.cle.entry_code = codep->u.ld.d;
|
|
Yap_kill_iblock(sp->u.cle.block, nsp->u.cle.block, ap);
|
|
return sp;
|
|
} else {
|
|
codep = NEXTOP(codep,ld);
|
|
}
|
|
break;
|
|
case _retry2:
|
|
case _retry3:
|
|
case _retry4:
|
|
case _try_clause2:
|
|
case _try_clause3:
|
|
case _try_clause4:
|
|
/* kill block and replace by this single clause */
|
|
if (codep->u.l.l != FAILCODE) {
|
|
path_stack_entry *nsp;
|
|
LogUpdClause *tgl = ClauseCodeToLogUpdClause(codep->u.l.l);
|
|
|
|
if (tgl->ClFlags & ErasedMask ||
|
|
IN_BETWEEN(bg, codep->u.l.l, lt)) {
|
|
codep = NEXTOP(codep,l);
|
|
break;
|
|
}
|
|
nsp = sp;
|
|
while ((--nsp)->flag != block_entry);
|
|
*sp->u.cle.entry_code = codep->u.l.l;
|
|
Yap_kill_iblock(sp->u.cle.block, nsp->u.cle.block, ap);
|
|
return sp;
|
|
} else {
|
|
codep = NEXTOP(codep,l);
|
|
}
|
|
break;
|
|
case _trust_logical_pred:
|
|
codep = NEXTOP(codep, l);
|
|
break;
|
|
case _retry_profiled:
|
|
case _count_call:
|
|
codep = NEXTOP(codep, p);
|
|
break;
|
|
default:
|
|
Yap_Error(INTERNAL_ERROR, TermNil, "Invalid Opcode %d", op);
|
|
return sp;
|
|
}
|
|
}
|
|
}
|
|
/* just mark the clause as dead and the code as unreachable, but
|
|
don't do anything else
|
|
*/
|
|
if (ap->ArityOfPE >= 2 &&
|
|
ap->ArityOfPE <=4) {
|
|
if (IN_BETWEEN(bg, start->u.Ill.l1->u.l.l, lt)) {
|
|
start->u.Ill.l1->u.l.l = FAILCODE;
|
|
}
|
|
} else {
|
|
if (IN_BETWEEN(bg, start->u.Ill.l1->u.ld.d, lt)) {
|
|
start->u.Ill.l1->u.ld.d = FAILCODE;
|
|
}
|
|
}
|
|
start->opc = Yap_opcode(_stale_lu_index);
|
|
return sp0;
|
|
}
|
|
}
|
|
|
|
static yamop *
|
|
copy_ld(yamop *codep, yamop *ocodep, PredEntry *ap, yamop *code, int has_cut)
|
|
{
|
|
codep->u.ld.s = ap->ArityOfPE;
|
|
codep->u.ld.p = ap;
|
|
codep->u.ld.d = code;
|
|
#ifdef YAPOR
|
|
/* FIX ME */
|
|
codep->u.ld.or_arg = ocodep->u.ld.or_arg;
|
|
#endif /* YAPOR */
|
|
#ifdef TABLING
|
|
codep->u.ld.te = ocodep->u.ld.te;
|
|
#endif /* TABLING */
|
|
return NEXTOP(codep, ld);
|
|
}
|
|
|
|
static yamop *
|
|
gen_lui_retry(yamop *codep, yamop *ocodep, int profiled, int count_call, yamop *cl, PredEntry *ap)
|
|
{
|
|
if (profiled) {
|
|
codep->opc = Yap_opcode(_retry_profiled);
|
|
codep->u.p.p = ap;
|
|
codep = NEXTOP(codep,p);
|
|
}
|
|
if (count_call) {
|
|
codep->opc = Yap_opcode(_count_retry);
|
|
codep->u.p.p = ap;
|
|
codep = NEXTOP(codep,p);
|
|
}
|
|
if (ap->ArityOfPE >= 2 &&
|
|
ap->ArityOfPE <= 4) {
|
|
codep->opc = Yap_opcode(_retry2+(ap->ArityOfPE-2));
|
|
codep->u.l.l = cl;
|
|
return NEXTOP(codep, l);
|
|
} else {
|
|
codep->opc = Yap_opcode(_retry);
|
|
return copy_ld(codep, ocodep, ap, cl, FALSE);
|
|
}
|
|
}
|
|
|
|
static yamop *
|
|
gen_lui_trust(yamop *codep, yamop *ocodep, int profiled, int count_call, PredEntry *ap, yamop *code, int has_cut, LogUpdIndex *blk)
|
|
{
|
|
if (profiled) {
|
|
codep->opc = Yap_opcode(_retry_profiled);
|
|
codep->u.p.p = ap;
|
|
codep = NEXTOP(codep,p);
|
|
}
|
|
if (count_call) {
|
|
codep->opc = Yap_opcode(_count_call);
|
|
codep->u.p.p = ap;
|
|
codep = NEXTOP(codep,p);
|
|
}
|
|
codep->opc = Yap_opcode(_trust_logical_pred);
|
|
codep->u.l.l = (yamop *)blk;
|
|
codep = NEXTOP(codep,l);
|
|
codep->opc = Yap_opcode(_trust);
|
|
return copy_ld(codep, ocodep, ap, code, has_cut);
|
|
}
|
|
|
|
static void
|
|
clean_ref_to_clause(LogUpdClause *tgl, op_numbers op, int compact_mode)
|
|
{
|
|
if (op == _try_clause ||
|
|
op == _try_clause2||
|
|
op == _try_clause3||
|
|
op == _try_clause4||
|
|
!compact_mode)
|
|
return;
|
|
LOCK(tgl->ClLock);
|
|
tgl->ClRefCount--;
|
|
if ((tgl->ClFlags & ErasedMask) &&
|
|
!(tgl->ClRefCount) &&
|
|
!(tgl->ClFlags & InUseMask)) {
|
|
/* last ref to the clause */
|
|
UNLOCK(tgl->ClLock);
|
|
Yap_ErLogUpdCl(tgl);
|
|
} else {
|
|
UNLOCK(tgl->ClLock);
|
|
}
|
|
}
|
|
|
|
static yamop *
|
|
cp_lu_trychain(yamop *codep, yamop *ocodep, yamop *ostart, int flag, PredEntry *ap, yamop *code, int has_cut, LogUpdIndex *nblk, UInt ncls, UInt i)
|
|
{
|
|
int count_reds = ap->PredFlags & CountPredFlag;
|
|
int profiled = ap->PredFlags & ProfiledPredFlag;
|
|
int compact_mode = (codep == ocodep);
|
|
|
|
while (ocodep != NULL &&
|
|
ocodep < ostart->u.Ill.l2) {
|
|
op_numbers op = Yap_op_from_opcode(ocodep->opc);
|
|
switch (op) {
|
|
case _try_clause2:
|
|
case _try_clause3:
|
|
case _try_clause4:
|
|
if (ocodep->u.l.l == FAILCODE) {
|
|
ocodep = NEXTOP(ocodep, l);
|
|
break;
|
|
}
|
|
case _retry2:
|
|
case _retry3:
|
|
case _retry4:
|
|
{
|
|
/* set up a try_clause2 */
|
|
LogUpdClause *tgl = ClauseCodeToLogUpdClause(ocodep->u.l.l);
|
|
|
|
if (tgl->ClFlags & ErasedMask) {
|
|
clean_ref_to_clause(tgl, op, compact_mode);
|
|
ocodep = NEXTOP(ocodep, l);
|
|
break;
|
|
} else if (i == 0) {
|
|
if (compact_mode &&
|
|
op != _try_clause2 +(ap->ArityOfPE-2)) {
|
|
tgl->ClRefCount--;
|
|
}
|
|
codep->opc = Yap_opcode(_try_clause2+(ap->ArityOfPE-2));
|
|
codep->u.l.l = ocodep->u.l.l;
|
|
codep = NEXTOP(codep,l);
|
|
} else if (i == ncls-1) {
|
|
if (!compact_mode) {
|
|
tgl->ClRefCount++;
|
|
} else {
|
|
Yap_cleanup_dangling_indices(NEXTOP(ocodep,l),ostart->u.Ill.l1,ostart->u.Ill.l2,(yamop *)&(ap->cs.p_code.ExpandCode));
|
|
}
|
|
codep = gen_lui_trust(codep, ocodep, profiled, count_reds, ap, ocodep->u.l.l, TRUE, nblk);
|
|
ocodep = NULL;
|
|
break;
|
|
} else {
|
|
if (op == _try_clause2+(ap->ArityOfPE-2) || !compact_mode) {
|
|
tgl->ClRefCount++;
|
|
}
|
|
codep = gen_lui_retry(codep, ocodep, profiled, count_reds, ocodep->u.l.l, ap);
|
|
}
|
|
}
|
|
i++;
|
|
ocodep = NEXTOP(ocodep, l);
|
|
break;
|
|
case _try_clause:
|
|
if (ocodep->u.ld.d == FAILCODE) {
|
|
ocodep = NEXTOP(ocodep, ld);
|
|
break;
|
|
}
|
|
case _retry:
|
|
case _trust:
|
|
{
|
|
/* set up a try_clause */
|
|
LogUpdClause *tgl = ClauseCodeToLogUpdClause(ocodep->u.ld.d);
|
|
|
|
if (tgl->ClFlags & ErasedMask) {
|
|
clean_ref_to_clause(tgl, op, compact_mode);
|
|
ocodep = NEXTOP(ocodep, ld);
|
|
break;
|
|
} else if (i == 0) {
|
|
if (compact_mode &&
|
|
op != _try_clause) {
|
|
tgl->ClRefCount--;
|
|
}
|
|
if (ap->ArityOfPE >= 2 &&
|
|
ap->ArityOfPE <= 4) {
|
|
codep->opc = Yap_opcode(_try_clause2+(ap->ArityOfPE-2));
|
|
codep->u.l.l = ocodep->u.ld.d;
|
|
codep = NEXTOP(codep, l);
|
|
} else {
|
|
codep->opc = Yap_opcode(_try_clause);
|
|
codep = copy_ld(codep, ocodep, ap, ocodep->u.ld.d, FALSE);
|
|
}
|
|
} else if (i == ncls-1) {
|
|
if (!compact_mode) {
|
|
tgl->ClRefCount++;
|
|
} else {
|
|
Yap_cleanup_dangling_indices(NEXTOP(ocodep,ld),ostart->u.Ill.l1,ostart->u.Ill.l2,(yamop *)&(ap->cs.p_code.ExpandCode));
|
|
}
|
|
codep = gen_lui_trust(codep, ocodep, profiled, count_reds, ap, ocodep->u.ld.d, TRUE, nblk);
|
|
ocodep = NULL;
|
|
break;
|
|
} else {
|
|
if (op == _try_clause || !compact_mode) {
|
|
tgl->ClRefCount++;
|
|
}
|
|
codep = gen_lui_retry(codep, ocodep, profiled, count_reds, ocodep->u.ld.d, ap);
|
|
}
|
|
}
|
|
i++;
|
|
ocodep = NEXTOP(ocodep, ld);
|
|
break;
|
|
case _trust_logical_pred:
|
|
ocodep = NEXTOP(ocodep, l);
|
|
break;
|
|
case _retry_profiled:
|
|
case _count_call:
|
|
ocodep = NEXTOP(ocodep, p);
|
|
break;
|
|
default:
|
|
Yap_Error(INTERNAL_ERROR, TermNil, "Invalid Opcode");
|
|
}
|
|
}
|
|
if (flag == RECORDZ) {
|
|
codep = gen_lui_trust(codep, ocodep, profiled, count_reds, ap, code, has_cut, nblk);
|
|
}
|
|
codep->opc = Yap_opcode(_Ystop);
|
|
/* this must be updated if we are copying to different place */
|
|
codep->u.l.l = nblk->ClCode;
|
|
return codep;
|
|
}
|
|
|
|
static yamop *
|
|
replace_lu_block(LogUpdIndex *blk, int flag, PredEntry *ap, yamop *code, int has_cut)
|
|
{
|
|
yamop *begin = blk->ClCode, *codep, *start, *ocodep;
|
|
yamop *nbegin;
|
|
UInt ncls, xcls, jnvs = 0;
|
|
UInt sz, i;
|
|
LogUpdIndex *ncl, *pcl;
|
|
int count_reds = ap->PredFlags & CountPredFlag;
|
|
int profiled = ap->PredFlags & ProfiledPredFlag;
|
|
op_numbers op = Yap_op_from_opcode(begin->opc);
|
|
|
|
|
|
while (op == _jump_if_nonvar) {
|
|
jnvs++;
|
|
begin = NEXTOP(begin, xll);
|
|
op = Yap_op_from_opcode(begin->opc);
|
|
}
|
|
/* add half the current space plus 1, and also the extra clause */
|
|
if (flag == RECORDA || flag == RECORDZ) {
|
|
/* we are still introducing a clause */
|
|
ncls = ++(begin->u.Ill.s);
|
|
xcls = ncls+ncls/2+2;
|
|
} else {
|
|
ncls = begin->u.Ill.s;
|
|
xcls = ncls;
|
|
}
|
|
if (ap->ArityOfPE == 2) {
|
|
sz = sizeof(LogUpdIndex)+
|
|
(xcls-1)*((UInt)NEXTOP((yamop *)NULL,l))+
|
|
((UInt)NEXTOP((yamop *)NULL,ld))+
|
|
jnvs*((UInt)NEXTOP((yamop *)NULL,xll))+
|
|
(UInt)NEXTOP((yamop *)NULL,Ill)+
|
|
(UInt)NEXTOP((yamop *)NULL,p)+
|
|
(UInt)NEXTOP((yamop *)NULL,l);
|
|
} else {
|
|
sz = sizeof(LogUpdIndex)+
|
|
xcls*((UInt)NEXTOP((yamop *)NULL,ld))+
|
|
jnvs*((UInt)NEXTOP((yamop *)NULL,xll))+
|
|
(UInt)NEXTOP((yamop *)NULL,Ill)+
|
|
(UInt)NEXTOP((yamop *)NULL,p)+
|
|
(UInt)NEXTOP((yamop *)NULL,l);
|
|
}
|
|
if (count_reds) sz += xcls*((UInt)NEXTOP((yamop *)NULL,p));
|
|
if (profiled) sz += xcls*((UInt)NEXTOP((yamop *)NULL,p));
|
|
ncl = (LogUpdIndex *)Yap_AllocCodeSpace(sz);
|
|
if (ncl == NULL) {
|
|
Yap_Error_Size = sz;
|
|
Yap_ErrorMessage = "while at indexing code";
|
|
return NULL;
|
|
}
|
|
#ifdef LOW_PROF
|
|
if (ProfilerOn &&
|
|
Yap_OffLineProfiler) {
|
|
Yap_inform_profiler_of_clause(ncl->ClCode, (yamop *)(ncl+sz), ap, 1);
|
|
}
|
|
#endif /* LOW_PROF */
|
|
ncl->ClFlags = LogUpdMask|IndexedPredFlag|IndexMask;
|
|
if (blk->ClFlags & SwitchRootMask) {
|
|
ncl->ClFlags |= SwitchRootMask;
|
|
}
|
|
ncl->ClPred = blk->ClPred;
|
|
ncl->ParentIndex = blk->ParentIndex;
|
|
ncl->ClRefCount = 0;
|
|
{
|
|
LogUpdIndex *idx = ncl->ChildIndex = blk->ChildIndex;
|
|
|
|
while (idx) {
|
|
LogUpdIndex *nidx;
|
|
|
|
LOCK(idx->ClLock);
|
|
blk->ClRefCount--;
|
|
ncl->ClRefCount++;
|
|
idx->ParentIndex = ncl;
|
|
nidx = idx->SiblingIndex;
|
|
UNLOCK(idx->ClLock);
|
|
idx = nidx;
|
|
}
|
|
}
|
|
blk->ChildIndex = NULL;
|
|
ncl->ClSize = sz;
|
|
INIT_LOCK(ncl->ClLock);
|
|
nbegin = ncl->ClCode;
|
|
begin = blk->ClCode;
|
|
while (jnvs--) {
|
|
nbegin->opc = begin->opc;
|
|
nbegin->u.xll.x = begin->u.xll.x;
|
|
nbegin->u.xll.l1 = begin->u.xll.l1;
|
|
nbegin->u.xll.l2 = NEXTOP(nbegin,xll);
|
|
if (nbegin->u.xll.l1->opc == Yap_opcode(_expand_clauses)) {
|
|
if (!(blk->ClFlags & ErasedMask)) {
|
|
/* we haven't done erase yet */
|
|
nbegin->u.xll.l1->u.sp.s3++;
|
|
}
|
|
}
|
|
begin = NEXTOP(begin, xll);
|
|
nbegin = NEXTOP(nbegin, xll);
|
|
}
|
|
codep = start = nbegin;
|
|
/* ok, we've allocated and set up things, now let's finish */
|
|
codep->opc = Yap_opcode(_enter_lu_pred);
|
|
codep->u.Ill.s = begin->u.Ill.s;
|
|
codep->u.Ill.I = ncl;
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
codep->u.Ill.p = ap;
|
|
#endif
|
|
codep = NEXTOP(codep,Ill);
|
|
ocodep = begin->u.Ill.l1;
|
|
if (flag == RECORDA) {
|
|
int j;
|
|
|
|
for (j=0; j < ncls/2; j++) {
|
|
if (ap->ArityOfPE == 2) {
|
|
codep = NEXTOP(codep, l);
|
|
} else {
|
|
codep = NEXTOP(codep, ld);
|
|
}
|
|
if (profiled) codep = NEXTOP(codep, p);
|
|
if (count_reds) codep = NEXTOP(codep, p);
|
|
}
|
|
start->u.Ill.l1 = codep;
|
|
i = 1;
|
|
if (ap->ArityOfPE >= 2 &&
|
|
ap->ArityOfPE <= 4) {
|
|
codep->opc = Yap_opcode(_try_clause2+(ap->ArityOfPE-2));
|
|
codep->u.l.l = code;
|
|
codep = NEXTOP(codep,l);
|
|
} else {
|
|
codep->opc = Yap_opcode(_try_clause);
|
|
codep = copy_ld(codep, ocodep, ap, code, has_cut);
|
|
}
|
|
} else if (flag == RECORDZ) {
|
|
LogUpdClause *tgl = ClauseCodeToLogUpdClause(code);
|
|
|
|
tgl->ClRefCount++;
|
|
start->u.Ill.l1 = codep;
|
|
i = 0;
|
|
} else {
|
|
start->u.Ill.l1 = codep;
|
|
i = 0;
|
|
}
|
|
codep = cp_lu_trychain(codep, ocodep, begin, flag, ap, code, has_cut, ncl, ncls, i);
|
|
/* the copying has been done */
|
|
start->u.Ill.l2 = codep;
|
|
/* make sure we have access to the clause */
|
|
codep->u.l.l = start;
|
|
/* insert ourselves into chain */
|
|
if (blk->ClFlags & SwitchRootMask) {
|
|
Yap_kill_iblock((ClauseUnion *)blk, NULL, ap);
|
|
} else {
|
|
pcl = blk->ParentIndex;
|
|
ncl->SiblingIndex = pcl->ChildIndex;
|
|
ncl->ClPred = pcl->ClPred;
|
|
ncl->ParentIndex = pcl;
|
|
ncl->PrevSiblingIndex = NULL;
|
|
if (pcl->ChildIndex) {
|
|
pcl->ChildIndex->PrevSiblingIndex = ncl;
|
|
}
|
|
pcl->ChildIndex = ncl;
|
|
/* we have a new pointer to our clause */
|
|
pcl->ClRefCount++;
|
|
if (!(blk->ClFlags & ErasedMask)) {
|
|
Yap_kill_iblock((ClauseUnion *)blk, (ClauseUnion *)pcl, ap);
|
|
}
|
|
}
|
|
return ncl->ClCode;
|
|
}
|
|
|
|
static yamop *
|
|
clean_up_index(LogUpdIndex *blk, yamop **jlbl, PredEntry *ap)
|
|
{
|
|
yamop *codep = blk->ClCode;
|
|
|
|
if (
|
|
#if defined(THREADS) || defined(YAPOR)
|
|
blk->ClRefCount
|
|
#else
|
|
blk->ClFlags & InUseMask
|
|
#endif
|
|
) {
|
|
yamop *new;
|
|
|
|
if ((new = replace_lu_block(blk, REFRESH, ap, NULL, FALSE)) == NULL) {
|
|
/* will be null, if we are in the middle of the current block */
|
|
return NULL;
|
|
}
|
|
if (jlbl)
|
|
*jlbl = new;
|
|
return new;
|
|
} else {
|
|
/* work on the current block */
|
|
op_numbers op = Yap_op_from_opcode(codep->opc);
|
|
UInt ncls;
|
|
|
|
while (op == _jump_if_nonvar) {
|
|
codep = NEXTOP(codep, xll);
|
|
op = Yap_op_from_opcode(codep->opc);
|
|
}
|
|
ncls = codep->u.Ill.s;
|
|
codep->opc = Yap_opcode(_enter_lu_pred);
|
|
codep->u.Ill.l2 = cp_lu_trychain(codep->u.Ill.l1, codep->u.Ill.l1, codep, REFRESH, ap, NULL, FALSE, blk, ncls, 0);
|
|
return codep;
|
|
}
|
|
}
|
|
|
|
static int is_trust(OPCODE opc) {
|
|
return opc == Yap_opcode(_trust);
|
|
}
|
|
|
|
static yamop *
|
|
insertz_in_lu_block(LogUpdIndex *blk, PredEntry *ap, yamop *code)
|
|
{
|
|
op_numbers op = Yap_op_from_opcode(blk->ClCode->opc);
|
|
yamop *end, *last, *where, *next;
|
|
UInt bsize;
|
|
yamop *begin = blk->ClCode;
|
|
|
|
/* make sure this is something I can work with */
|
|
while (op == _jump_if_nonvar) {
|
|
begin = NEXTOP(begin, xll);
|
|
op = Yap_op_from_opcode(begin->opc);
|
|
}
|
|
/* block should start with an enter_lu_pred and end with a trust,
|
|
otherwise I just don't understand what is going on */
|
|
if ((op != _enter_lu_pred && op != _stale_lu_index) ||
|
|
! is_trust(PREVOP(begin->u.xll.l2,ld)->opc)) {
|
|
Yap_kill_iblock((ClauseUnion *)blk, (ClauseUnion *)blk->ParentIndex, ap);
|
|
return (yamop *)&(ap->cs.p_code.ExpandCode);
|
|
}
|
|
/* ok, we are in a sequence of try-retry-trust instructions, or something
|
|
similar */
|
|
bsize = blk->ClSize -(CELL)NEXTOP((yamop*)NULL,l);
|
|
end = (yamop *)((CODEADDR)blk+bsize);
|
|
where = last = begin->u.Ill.l2;
|
|
next = NEXTOP(where, ld);
|
|
if (ap->PredFlags & CountPredFlag) {
|
|
next = NEXTOP(where,p); /* trust logical followed by trust */
|
|
}
|
|
if (ap->PredFlags & ProfiledPredFlag) {
|
|
next = NEXTOP(where,p); /* trust logical followed by trust */
|
|
}
|
|
last = PREVOP(last, ld);
|
|
/* follow profiling and counting instructions */
|
|
if (ap->PredFlags & ProfiledPredFlag) {
|
|
next = NEXTOP(next, p);
|
|
}
|
|
if (ap->PredFlags & CountPredFlag) {
|
|
next = NEXTOP(next, p);
|
|
}
|
|
if (next <= end) {
|
|
/* we got space to put something in */
|
|
LogUpdClause *tgl = ClauseCodeToLogUpdClause(code);
|
|
|
|
if (begin->opc != Yap_opcode(_stale_lu_index)) {
|
|
if (
|
|
#if defined(THREADS) || defined(YAPOR)
|
|
blk->ClRefCount
|
|
#else
|
|
blk->ClFlags & InUseMask
|
|
#endif
|
|
) {
|
|
begin->opc = Yap_opcode(_stale_lu_index);
|
|
} else {
|
|
/* we need to rebuild the code */
|
|
/* first, shift the last retry down, getting rid of the trust logical pred */
|
|
yamop *nlast = PREVOP(last, l);
|
|
|
|
if (ap->ArityOfPE >= 2 &&
|
|
ap->ArityOfPE <= 4) {
|
|
yamop *cl = last->u.ld.d;
|
|
|
|
nlast->opc = Yap_opcode(_retry2+(ap->ArityOfPE-2));
|
|
nlast->u.l.l = cl;
|
|
where = NEXTOP(nlast,l);
|
|
} else {
|
|
memmove((void *)nlast, (void *)last, (CELL)NEXTOP((yamop *)NULL,ld));
|
|
nlast->opc = Yap_opcode(_retry);
|
|
where = NEXTOP(nlast,ld);
|
|
}
|
|
if (ap->PredFlags & ProfiledPredFlag) {
|
|
where->opc = Yap_opcode(_retry_profiled);
|
|
where->u.p.p = ap;
|
|
where = NEXTOP(where, p);
|
|
}
|
|
if (ap->PredFlags & CountPredFlag) {
|
|
where->opc = Yap_opcode(_count_retry);
|
|
where->u.p.p = ap;
|
|
where = NEXTOP(where, p);
|
|
}
|
|
where->opc = Yap_opcode(_trust_logical_pred);
|
|
where->u.l.l = (yamop *)blk;
|
|
where = NEXTOP(where, l);
|
|
}
|
|
}
|
|
where->opc = Yap_opcode(_trust);
|
|
where->u.ld.s = ap->ArityOfPE;
|
|
where->u.ld.p = ap;
|
|
where->u.ld.d = code;
|
|
#ifdef YAPOR
|
|
/* FIX ME */
|
|
where->u.ld.or_arg = last->u.ld.or_arg;
|
|
#endif /* YAPOR */
|
|
#ifdef TABLING
|
|
where->u.ld.te = last->u.ld.te;
|
|
#endif /* TABLING */
|
|
where = NEXTOP(where,ld);
|
|
begin->u.Ill.l2 = where;
|
|
where->opc = Yap_opcode(_Ystop);
|
|
where->u.l.l = blk->ClCode;
|
|
begin->u.Ill.s++;
|
|
tgl->ClRefCount++;
|
|
return blk->ClCode;
|
|
} else {
|
|
return replace_lu_block(blk, RECORDZ, ap, code, has_cut(code));
|
|
}
|
|
}
|
|
|
|
static yamop *
|
|
inserta_in_lu_block(LogUpdIndex *blk, PredEntry *ap, yamop *code)
|
|
{
|
|
op_numbers op = Yap_op_from_opcode(blk->ClCode->opc);
|
|
yamop *start, *next, *here;
|
|
yamop *begin = blk->ClCode;
|
|
|
|
/* make sure this is something I can work with */
|
|
while (op == _jump_if_nonvar) {
|
|
begin = NEXTOP(begin, xll);
|
|
op = Yap_op_from_opcode(begin->opc);
|
|
}
|
|
if ((op != _enter_lu_pred && op != _stale_lu_index) ||
|
|
! is_trust(PREVOP(begin->u.xll.l2,ld)->opc)) {
|
|
Yap_kill_iblock((ClauseUnion *)blk, (ClauseUnion *)blk->ParentIndex, ap);
|
|
return (yamop *)&(ap->cs.p_code.ExpandCode);
|
|
}
|
|
/* ok, we are in a sequence of try-retry-trust instructions, or something
|
|
similar */
|
|
here = next = begin->u.Ill.l1;
|
|
if (here->opc == Yap_opcode(_try_clause) && here->u.ld.d == FAILCODE) {
|
|
begin->u.Ill.s++;
|
|
here->u.ld.d = code;
|
|
return blk->ClCode;
|
|
}
|
|
if (here->opc == Yap_opcode(_try_clause2+(ap->ArityOfPE-2))
|
|
&& here->u.l.l == FAILCODE) {
|
|
begin->u.Ill.s++;
|
|
here->u.l.l = code;
|
|
return blk->ClCode;
|
|
}
|
|
start = NEXTOP(begin,Ill);
|
|
if (ap->ArityOfPE >= 2 &&
|
|
ap->ArityOfPE <= 4)
|
|
here = PREVOP(here, l);
|
|
else
|
|
here = PREVOP(here, ld);
|
|
/* follow profiling and counting instructions */
|
|
if (ap->PredFlags & ProfiledPredFlag) {
|
|
here = PREVOP(here, p);
|
|
}
|
|
if (ap->PredFlags & CountPredFlag) {
|
|
here = PREVOP(here, p);
|
|
}
|
|
if (here >= start) {
|
|
/* we got space to put something in */
|
|
if (ap->ArityOfPE >= 2 &&
|
|
ap->ArityOfPE <= 4) {
|
|
LogUpdClause *tgl = ClauseCodeToLogUpdClause(next->u.l.l);
|
|
next->opc = Yap_opcode(_retry2+(ap->ArityOfPE-2));
|
|
tgl->ClRefCount++;
|
|
begin->u.Ill.l1 = here;
|
|
begin->u.Ill.s++;
|
|
here->opc = Yap_opcode(_try_clause2+(ap->ArityOfPE-2));
|
|
here->u.l.l = code;
|
|
here = NEXTOP(here,l);
|
|
} else {
|
|
LogUpdClause *tgl = ClauseCodeToLogUpdClause(next->u.ld.d);
|
|
next->opc = Yap_opcode(_retry);
|
|
tgl->ClRefCount++;
|
|
begin->u.Ill.l1 = here;
|
|
begin->u.Ill.s++;
|
|
here->opc = Yap_opcode(_try_clause);
|
|
here->u.ld.s = next->u.ld.s;
|
|
here->u.ld.p = ap;
|
|
here->u.ld.d = code;
|
|
#ifdef YAPOR
|
|
/* FIX ME */
|
|
here->u.ld.or_arg = next->u.ld.or_arg;
|
|
#endif /* YAPOR */
|
|
#ifdef TABLING
|
|
here->u.ld.te = next->u.ld.te;
|
|
#endif /* TABLING */
|
|
here = NEXTOP(here,ld);
|
|
}
|
|
if (ap->PredFlags & ProfiledPredFlag) {
|
|
here->opc = Yap_opcode(_retry_profiled);
|
|
here->u.p.p = ap;
|
|
here = NEXTOP(here, p);
|
|
}
|
|
if (ap->PredFlags & CountPredFlag) {
|
|
here->opc = Yap_opcode(_count_retry);
|
|
here->u.p.p = ap;
|
|
here = NEXTOP(here, p);
|
|
}
|
|
return blk->ClCode;
|
|
} else {
|
|
return replace_lu_block(blk, RECORDA, ap, code, has_cut(code));
|
|
}
|
|
}
|
|
|
|
static path_stack_entry *
|
|
expanda_block(path_stack_entry *sp, PredEntry *ap, ClauseDef *cls, int group1, yamop *alt, struct intermediates *cint)
|
|
{
|
|
while ((--sp)->flag != block_entry);
|
|
if (sp->u.cle.entry_code == NULL) {
|
|
Yap_kill_iblock(sp->u.cle.block, NULL, ap);
|
|
} else if (ap->PredFlags & LogUpdatePredFlag &&
|
|
group1 && alt == NULL) {
|
|
yamop *new_code =
|
|
inserta_in_lu_block((LogUpdIndex *)sp->u.cle.block, ap, cls->Code);
|
|
if (new_code == NULL) {
|
|
recover_from_failed_susp_on_cls(cint, 0);
|
|
save_machine_regs();
|
|
longjmp(cint->CompilerBotch,2);
|
|
}
|
|
*sp->u.cle.entry_code = new_code;
|
|
} else {
|
|
path_stack_entry *nsp = sp;
|
|
|
|
while ((--nsp)->flag != block_entry);
|
|
Yap_kill_iblock(sp->u.cle.block, nsp->u.cle.block, ap);
|
|
*sp->u.cle.entry_code = (yamop *)&(ap->cs.p_code.ExpandCode);
|
|
}
|
|
return sp;
|
|
}
|
|
|
|
static path_stack_entry *
|
|
expandz_block(path_stack_entry *sp, PredEntry *ap, ClauseDef *cls, int group1, yamop *alt, struct intermediates *cint)
|
|
{
|
|
while ((--sp)->flag != block_entry);
|
|
if (sp->u.cle.entry_code == NULL) {
|
|
Yap_kill_iblock(sp->u.cle.block, NULL, ap);
|
|
} else if (ap->PredFlags & LogUpdatePredFlag &&
|
|
group1 && alt == NULL) {
|
|
yamop *new_code =
|
|
insertz_in_lu_block((LogUpdIndex *)sp->u.cle.block, ap, cls->Code);
|
|
if (new_code == NULL) {
|
|
recover_from_failed_susp_on_cls(cint, 0);
|
|
save_machine_regs();
|
|
longjmp(cint->CompilerBotch,2);
|
|
}
|
|
*sp->u.cle.entry_code =
|
|
new_code;
|
|
} else {
|
|
path_stack_entry *nsp = sp;
|
|
|
|
while ((--nsp)->flag != block_entry);
|
|
Yap_kill_iblock(sp->u.cle.block, nsp->u.cle.block, ap);
|
|
*sp->u.cle.entry_code = (yamop *)&(ap->cs.p_code.ExpandCode);
|
|
}
|
|
return sp;
|
|
}
|
|
|
|
static LogUpdClause *
|
|
lu_clause(yamop *ipc)
|
|
{
|
|
LogUpdClause *c;
|
|
CELL *p = (CELL *)ipc;
|
|
|
|
if (ipc == FAILCODE)
|
|
return NULL;
|
|
while ((c = ClauseCodeToLogUpdClause(p))->Id != FunctorDBRef ||
|
|
!(c->ClFlags & LogUpdMask) ||
|
|
(c->ClFlags & (IndexMask|DynamicMask|SwitchTableMask|SwitchRootMask))) {
|
|
p--;
|
|
}
|
|
return c;
|
|
}
|
|
|
|
static StaticClause *
|
|
static_clause(yamop *ipc, PredEntry *ap)
|
|
{
|
|
StaticClause *c;
|
|
CELL *p = (CELL *)ipc;
|
|
|
|
if (ipc == FAILCODE)
|
|
return NULL;
|
|
if (ap->PredFlags & MegaClausePredFlag)
|
|
return (StaticClause *)ipc;
|
|
while ((c = ClauseCodeToStaticClause(p))) {
|
|
UInt fls = c->ClFlags & ~HasBlobsMask;
|
|
if (fls == StaticMask) {
|
|
if (ap->PredFlags & SourcePredFlag) {
|
|
if ((char *)c->usc.ClSource < (char *)c+c->ClSize &&
|
|
valid_instructions(ipc, c->ClCode))
|
|
return c;
|
|
} else {
|
|
if (c->usc.ClPred == ap &&
|
|
valid_instructions(ipc, c->ClCode))
|
|
return c;
|
|
}
|
|
} else if (fls == (StaticMask|FactMask)) {
|
|
if (c->usc.ClPred == ap &&
|
|
valid_instructions(ipc,c->ClCode))
|
|
return c;
|
|
}
|
|
p--;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static StaticClause *
|
|
simple_static_clause(yamop *ipc)
|
|
{
|
|
if (ipc == FAILCODE)
|
|
return NULL;
|
|
return ClauseCodeToStaticClause(ipc);
|
|
}
|
|
|
|
/* this code should be called when we jumped to clauses */
|
|
static path_stack_entry *
|
|
kill_unsafe_block(path_stack_entry *sp, op_numbers op, PredEntry *ap, int first, int remove, ClauseDef *cls)
|
|
{
|
|
yamop *ipc;
|
|
while ((--sp)->flag != block_entry);
|
|
if (sp->u.cle.entry_code == NULL)
|
|
return sp;
|
|
ipc = *sp->u.cle.entry_code;
|
|
if (Yap_op_from_opcode(ipc->opc) == op) {
|
|
/* the new block was the current clause */
|
|
ClauseDef cld[2];
|
|
|
|
if (remove) {
|
|
*sp->u.cle.entry_code = FAILCODE;
|
|
return sp;
|
|
}
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
struct intermediates intrs;
|
|
LogUpdClause *lc = lu_clause(ipc);
|
|
|
|
if (first) {
|
|
cld[0].Code = cls[0].Code;
|
|
cld[1].Code = lc->ClCode;
|
|
} else {
|
|
cld[0].Code = lc->ClCode;
|
|
cld[1].Code = cls[0].Code;
|
|
}
|
|
intrs.expand_block = NULL;
|
|
*sp->u.cle.entry_code = (yamop *)suspend_indexing(cld, cld+1, ap, &intrs);
|
|
} else {
|
|
/* static predicate, shouldn't do much, just suspend the code here */
|
|
*sp->u.cle.entry_code = (yamop *)&(ap->cs.p_code.ExpandCode);
|
|
return sp;
|
|
}
|
|
return sp;
|
|
}
|
|
/* we didn't have protection, should kill now */
|
|
return kill_block(sp+1, ap);
|
|
}
|
|
|
|
static int
|
|
compacta_expand_clauses(yamop *ipc)
|
|
{
|
|
/* expand clauses so that you have a hole at the beginning */
|
|
/* we know that there is at least one element here */
|
|
yamop **start = (yamop **)(NEXTOP(ipc,sp));
|
|
yamop **ptr, **end;
|
|
|
|
ptr = end = start+ipc->u.sp.s1;
|
|
|
|
while (ptr > start) {
|
|
yamop *next = *--ptr;
|
|
if (next) *--end = next;
|
|
}
|
|
if (ptr != end) {
|
|
while (end > start) {
|
|
*--end = NULL;
|
|
}
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
static int
|
|
compactz_expand_clauses(yamop *ipc)
|
|
{
|
|
/* expand clauses so that you have a hole at the beginning */
|
|
/* we know that there is at least one element here */
|
|
yamop **start = (yamop **)(NEXTOP(ipc,sp));
|
|
yamop **ptr, **end;
|
|
|
|
end = start+ipc->u.sp.s1;
|
|
ptr = start;
|
|
|
|
while (ptr < end) {
|
|
yamop *next = *ptr++;
|
|
if (next) *start++ = next;
|
|
}
|
|
/* reset empty slots at end */
|
|
if (start != end) {
|
|
while (start < end) {
|
|
*start++ = NULL;
|
|
}
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
/* this code should be called when we jumped to clauses */
|
|
static yamop *
|
|
add_to_expand_clauses(path_stack_entry **spp, yamop *ipc, ClauseDef *cls, PredEntry *ap, int first)
|
|
{
|
|
path_stack_entry *sp = *spp;
|
|
yamop **clar;
|
|
|
|
if (first) {
|
|
|
|
do {
|
|
clar = (yamop **)NEXTOP(ipc,sp);
|
|
|
|
if (*clar == NULL || clar[0] == cls->Code) {
|
|
while (*clar == NULL) clar++;
|
|
if (clar[0] != cls->Code) {
|
|
clar[-1] = cls->Code;
|
|
ipc->u.sp.s2++;
|
|
}
|
|
return pop_path(spp, cls, ap);
|
|
}
|
|
} while (compacta_expand_clauses(ipc));
|
|
} else {
|
|
do {
|
|
clar = (yamop **)NEXTOP(ipc,sp) + ipc->u.sp.s1;
|
|
if (clar[-1] == NULL || clar[-1] == cls->Code) {
|
|
while (*--clar == NULL);
|
|
if (clar[0] != cls->Code) {
|
|
clar[1] = cls->Code;
|
|
ipc->u.sp.s2++;
|
|
}
|
|
return pop_path(spp, cls, ap);
|
|
}
|
|
} while (compactz_expand_clauses(ipc));
|
|
}
|
|
while ((--sp)->flag != block_entry);
|
|
if (sp->u.cle.entry_code) {
|
|
*sp->u.cle.entry_code = (yamop *)&(ap->cs.p_code.ExpandCode);
|
|
}
|
|
recover_ecls_block(ipc);
|
|
return pop_path(spp, cls, ap);
|
|
}
|
|
|
|
/* this code should be called when we jumped to clauses */
|
|
static void
|
|
nullify_expand_clause(yamop *ipc, path_stack_entry *sp, ClauseDef *cls)
|
|
{
|
|
yamop **st = (yamop **)NEXTOP(ipc,sp);
|
|
yamop **max = st+ipc->u.sp.s1;
|
|
|
|
/* make sure we get rid of the reference */
|
|
while (st < max) {
|
|
if (*st && *st == cls->Code) {
|
|
*st = NULL;
|
|
ipc->u.sp.s2--;
|
|
break;
|
|
}
|
|
st++;
|
|
}
|
|
/* if the block has a single element */
|
|
if (ipc->u.sp.s2 == 1) {
|
|
yamop **st = (yamop **)NEXTOP(ipc,sp);
|
|
while ((--sp)->flag != block_entry);
|
|
while (TRUE) {
|
|
if (*st && *st != cls->Code) {
|
|
*sp->u.cle.entry_code = *st;
|
|
recover_ecls_block(ipc);
|
|
return;
|
|
}
|
|
st++;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
add_to_index(struct intermediates *cint, int first, path_stack_entry *sp, ClauseDef *cls) {
|
|
/* last clause to experiment with */
|
|
PredEntry *ap = cint->CurrentPred;
|
|
yamop *ipc = ap->cs.p_code.TrueCodeOfPred;
|
|
int group1 = TRUE;
|
|
yamop *alt = NULL;
|
|
UInt current_arity = 0;
|
|
int last_arg = TRUE;
|
|
|
|
sp = init_block_stack(sp, ipc, ap);
|
|
/* try to refine the interval using the indexing code */
|
|
while (ipc != NULL) {
|
|
op_numbers op = Yap_op_from_opcode(ipc->opc);
|
|
|
|
switch(op) {
|
|
case _try_clause:
|
|
/* I cannot expand a predicate that starts on a variable,
|
|
have to expand the index.
|
|
*/
|
|
if (first) {
|
|
sp = expanda_block(sp, ap, cls, group1, alt, cint);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* just go to next instruction */
|
|
ipc = NEXTOP(ipc,ld);
|
|
}
|
|
break;
|
|
case _try_clause2:
|
|
case _try_clause3:
|
|
case _try_clause4:
|
|
/* I cannot expand a predicate that starts on a variable,
|
|
have to expand the index.
|
|
*/
|
|
if (first) {
|
|
sp = expanda_block(sp, ap, cls, group1, alt, cint);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* just go to next instruction */
|
|
ipc = NEXTOP(ipc,l);
|
|
}
|
|
break;
|
|
case _stale_lu_index:
|
|
case _enter_lu_pred:
|
|
if (first) {
|
|
sp = expanda_block(sp, ap, cls, group1, alt, cint);
|
|
} else {
|
|
sp = expandz_block(sp, ap, cls, group1, alt, cint);
|
|
}
|
|
ipc = pop_path(&sp, cls, ap);
|
|
break;
|
|
case _retry:
|
|
/* this clause had no indexing */
|
|
ipc = NEXTOP(ipc,ld);
|
|
break;
|
|
case _retry2:
|
|
case _retry3:
|
|
case _retry4:
|
|
/* this clause had no indexing */
|
|
ipc = NEXTOP(ipc,l);
|
|
break;
|
|
/* instructions type l */
|
|
case _retry_me:
|
|
/* should never be reached both for asserta */
|
|
group1 = FALSE;
|
|
ipc = ipc->u.ld.d;
|
|
break;
|
|
case _try_me:
|
|
if (first) {
|
|
ipc = NEXTOP(ipc,ld);
|
|
alt = ipc->u.ld.d;
|
|
} else {
|
|
ipc = ipc->u.ld.d;
|
|
group1 = FALSE;
|
|
}
|
|
break;
|
|
case _retry_profiled:
|
|
case _count_retry:
|
|
ipc = NEXTOP(ipc, ld);
|
|
break;
|
|
case _profiled_trust_me:
|
|
case _trust_me:
|
|
case _count_trust_me:
|
|
group1 = FALSE;
|
|
ipc = NEXTOP(ipc, ld);
|
|
break;
|
|
case _trust_logical_pred:
|
|
ipc = NEXTOP(ipc, l);
|
|
break;
|
|
case _trust:
|
|
sp = expandz_block(sp, ap, cls, group1, alt, cint);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
break;
|
|
case _jump:
|
|
sp = cross_block(sp, &ipc->u.l.l, ap);
|
|
/* just skip for now, but should worry about memory management */
|
|
ipc = ipc->u.l.l;
|
|
break;
|
|
case _jump_if_var:
|
|
sp = push_path(sp, &(ipc->u.l.l), cls, cint);
|
|
ipc = NEXTOP(ipc,l);
|
|
break;
|
|
case _jump_if_nonvar:
|
|
sp = push_path(sp, &(ipc->u.xll.l2), cls, cint);
|
|
sp = cross_block(sp, &ipc->u.xll.l1, ap);
|
|
ipc = ipc->u.xll.l1;
|
|
break;
|
|
/* instructions type EC */
|
|
case _try_in:
|
|
/* we are done */
|
|
if (first) {
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
ipc = NEXTOP(ipc,l);
|
|
}
|
|
break;
|
|
/* instructions type e */
|
|
case _switch_on_type:
|
|
sp = push_path(sp, &(ipc->u.llll.l4), cls, cint);
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
add_head_info(cls, 1);
|
|
} else {
|
|
add_info(cls, 1);
|
|
}
|
|
if (IsPairTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.llll.l1;
|
|
|
|
current_arity = 2;
|
|
move_next(cls, 1);
|
|
if (nipc == FAILCODE) {
|
|
/* jump straight to clause */
|
|
ipc->u.llll.l1 = cls->CurrentCode;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* go on */
|
|
sp = cross_block(sp, &ipc->u.llll.l1, ap);
|
|
ipc = nipc;
|
|
}
|
|
} else if (IsAtomOrIntTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.llll.l2;
|
|
move_next(cls, 1);
|
|
if (nipc == FAILCODE) {
|
|
/* need to expand the block */
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* I do not have to worry about crossing a block here */
|
|
ipc = nipc;
|
|
}
|
|
} else if (IsApplTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.llll.l3;
|
|
if (nipc == FAILCODE) {
|
|
/* need to expand the block */
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* I do not have to worry about crossing a block here */
|
|
ipc = nipc;
|
|
}
|
|
} else {
|
|
/* we can't separate into four groups,
|
|
need to restart.
|
|
*/
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
}
|
|
break;
|
|
case _switch_list_nl:
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
break;
|
|
case _switch_on_arg_type:
|
|
sp = push_path(sp, &(ipc->u.xllll.l4), cls, cint);
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
add_head_info(cls, Yap_regtoregno(ipc->u.xllll.x));
|
|
} else {
|
|
add_info(cls, Yap_regtoregno(ipc->u.xllll.x));
|
|
}
|
|
if (IsPairTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.xllll.l1;
|
|
|
|
current_arity = 2;
|
|
move_next(cls, Yap_regtoregno(ipc->u.xllll.x));
|
|
if (nipc == FAILCODE) {
|
|
/* jump straight to clause */
|
|
ipc->u.xllll.l1 = cls->CurrentCode;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* go on */
|
|
sp = cross_block(sp, &ipc->u.xllll.l1, ap);
|
|
ipc = nipc;
|
|
}
|
|
} else if (IsAtomOrIntTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.xllll.l2;
|
|
move_next(cls, Yap_regtoregno(ipc->u.xllll.x));
|
|
if (nipc == FAILCODE) {
|
|
/* need to expand the block */
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* I do not have to worry about crossing a block here */
|
|
ipc = nipc;
|
|
}
|
|
} else if (IsApplTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.xllll.l3;
|
|
move_next(cls, Yap_regtoregno(ipc->u.xllll.x));
|
|
if (nipc == FAILCODE) {
|
|
/* need to expand the block */
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* I do not have to worry about crossing a block here */
|
|
ipc = nipc;
|
|
}
|
|
} else {
|
|
/* we can't separate into four groups,
|
|
need to restart.
|
|
*/
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
}
|
|
break;
|
|
case _switch_on_sub_arg_type:
|
|
sp = push_path(sp, &(ipc->u.sllll.l4), cls, cint);
|
|
add_arg_info(cls, ap, ipc->u.sllll.s+1);
|
|
if (IsPairTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.sllll.l1;
|
|
current_arity = 2;
|
|
skip_to_arg(cls, ap, ipc->u.sllll.s, current_arity);
|
|
if (current_arity != ipc->u.sllll.s+1) {
|
|
last_arg = FALSE;
|
|
}
|
|
if (nipc == FAILCODE) {
|
|
/* jump straight to clause */
|
|
ipc->u.sllll.l1 = cls->CurrentCode;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* go on */
|
|
sp = cross_block(sp, &ipc->u.sllll.l1, ap);
|
|
ipc = nipc;
|
|
}
|
|
} else if (IsAtomOrIntTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.sllll.l2;
|
|
skip_to_arg(cls, ap, ipc->u.sllll.s, current_arity);
|
|
if (current_arity != ipc->u.sllll.s+1) {
|
|
last_arg = FALSE;
|
|
}
|
|
if (nipc == FAILCODE) {
|
|
/* need to expand the block */
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* I do not have to worry about crossing a block here */
|
|
ipc = nipc;
|
|
}
|
|
} else if (IsApplTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.sllll.l3;
|
|
skip_to_arg(cls, ap, ipc->u.sllll.s, current_arity);
|
|
if (current_arity != ipc->u.sllll.s+1) {
|
|
last_arg = FALSE;
|
|
}
|
|
if (nipc == FAILCODE) {
|
|
/* need to expand the block */
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* I do not have to worry about crossing a block here */
|
|
ipc = nipc;
|
|
}
|
|
} else {
|
|
/* we can't separate into four groups,
|
|
need to restart.
|
|
*/
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
}
|
|
break;
|
|
case _if_not_then:
|
|
ipc = pop_path(&sp, cls, ap);
|
|
break;
|
|
/* instructions type ollll */
|
|
case _switch_on_func:
|
|
case _if_func:
|
|
case _go_on_func:
|
|
{
|
|
FuncSwiEntry *fe;
|
|
yamop *newpc;
|
|
Functor f = (Functor)RepAppl(cls->Tag);
|
|
|
|
if (op == _switch_on_func) {
|
|
fe = lookup_f_hash(f, ipc->u.sssl.l, ipc->u.sssl.s);
|
|
} else {
|
|
fe = lookup_f(f, ipc->u.sssl.l, ipc->u.sssl.s);
|
|
}
|
|
if (!IsExtensionFunctor(f)) {
|
|
current_arity = ArityOfFunctor(f);
|
|
}
|
|
newpc = (yamop *)(fe->Label);
|
|
|
|
if (newpc == (yamop *)&(ap->cs.p_code.ExpandCode)) {
|
|
/* we found it */
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else if (newpc == FAILCODE) {
|
|
/* oops, nothing there */
|
|
if (fe->Tag != f) {
|
|
if (IsExtensionFunctor(f)) {
|
|
sp = kill_unsafe_block(sp, op, ap, first, FALSE, cls);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
break;
|
|
}
|
|
if (table_fe_overflow(ipc, f)) {
|
|
fe = expand_ftable(ipc, current_block(sp), cint, f);
|
|
}
|
|
fe->Tag = f;
|
|
ipc->u.sssl.e++;
|
|
}
|
|
fe->Label = (UInt)cls->CurrentCode;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
yamop *newpc = (yamop *)(fe->Label);
|
|
sp = fetch_new_block(sp, &(ipc->u.sssl.l), ap);
|
|
sp = cross_block(sp, (yamop **)&(fe->Label), ap);
|
|
ipc = newpc;
|
|
}
|
|
}
|
|
break;
|
|
case _index_dbref:
|
|
cls->Tag = cls->u.t_ptr;
|
|
ipc = NEXTOP(ipc,e);
|
|
break;
|
|
case _index_blob:
|
|
cls->Tag = MkIntTerm(RepAppl(cls->u.t_ptr)[1]);
|
|
ipc = NEXTOP(ipc,e);
|
|
break;
|
|
case _switch_on_cons:
|
|
case _if_cons:
|
|
case _go_on_cons:
|
|
{
|
|
AtomSwiEntry *ae;
|
|
yamop *newpc;
|
|
Term at = cls->Tag;
|
|
|
|
if (op == _switch_on_cons) {
|
|
ae = lookup_c_hash(at,ipc->u.sssl.l,ipc->u.sssl.s);
|
|
} else {
|
|
ae = lookup_c(at, ipc->u.sssl.l, ipc->u.sssl.s);
|
|
}
|
|
newpc = (yamop *)(ae->Label);
|
|
|
|
if (newpc == (yamop *)&(ap->cs.p_code.ExpandCode)) {
|
|
/* nothing more to do */
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else if (newpc == FAILCODE) {
|
|
/* oops, nothing there */
|
|
if (ae->Tag != at) {
|
|
if (table_ae_overflow(ipc, at)) {
|
|
ae = expand_ctable(ipc, current_block(sp), cint, at);
|
|
}
|
|
ae->Tag = at;
|
|
ipc->u.sssl.e++;
|
|
}
|
|
ae->Label = (UInt)cls->CurrentCode;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
yamop *newpc = (yamop *)(ae->Label);
|
|
|
|
sp = fetch_new_block(sp, &(ipc->u.sssl.l), ap);
|
|
sp = cross_block(sp, (yamop **)&(ae->Label), ap);
|
|
ipc = newpc;
|
|
}
|
|
}
|
|
break;
|
|
case _expand_clauses:
|
|
ipc = add_to_expand_clauses(&sp, ipc, cls, ap, first);
|
|
break;
|
|
case _expand_index:
|
|
ipc = pop_path(&sp, cls, ap);
|
|
break;
|
|
case _lock_lu:
|
|
ipc = NEXTOP(ipc,p);
|
|
break;
|
|
case _unlock_lu:
|
|
ipc = NEXTOP(ipc,e);
|
|
break;
|
|
case _op_fail:
|
|
while ((--sp)->flag != block_entry);
|
|
*sp->u.cle.entry_code = cls->Code;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
break;
|
|
default:
|
|
sp = kill_unsafe_block(sp, op, ap, first, FALSE, cls);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
Yap_AddClauseToIndex(PredEntry *ap, yamop *beg, int first) {
|
|
ClauseDef cl;
|
|
/* first clause */
|
|
path_stack_entry *stack, *sp;
|
|
int cb;
|
|
struct intermediates cint;
|
|
|
|
if (!(ap->PredFlags & LogUpdatePredFlag)) {
|
|
if (ap->PredFlags & IndexedPredFlag)
|
|
Yap_RemoveIndexation(ap);
|
|
return;
|
|
}
|
|
cint.CurrentPred = ap;
|
|
cint.expand_block = NULL;
|
|
cint.CodeStart = cint.BlobsStart = cint.cpc = cint.icpc = NIL;
|
|
if ((cb = setjmp(cint.CompilerBotch)) == 3) {
|
|
restore_machine_regs();
|
|
Yap_gcl(Yap_Error_Size, ap->ArityOfPE, ENV, CP);
|
|
save_machine_regs();
|
|
} else if (cb == 2) {
|
|
restore_machine_regs();
|
|
Yap_growheap(FALSE, Yap_Error_Size, NULL);
|
|
save_machine_regs();
|
|
} else if (cb == 4) {
|
|
restore_machine_regs();
|
|
Yap_growtrail(Yap_Error_Size, FALSE);
|
|
save_machine_regs();
|
|
}
|
|
if (cb) {
|
|
Yap_RemoveIndexation(ap);
|
|
return;
|
|
}
|
|
Yap_Error_Size = 0;
|
|
Yap_ErrorMessage = NULL;
|
|
#ifdef DEBUG
|
|
if (Yap_Option['i' - 'a' + 1]) {
|
|
Term tmod = ap->ModuleOfPred;
|
|
if (!tmod) tmod = TermProlog;
|
|
Yap_DebugPutc(Yap_c_error_stream,'+');
|
|
Yap_DebugPutc(Yap_c_error_stream,'\t');
|
|
Yap_plwrite(tmod, Yap_DebugPutc, 0);
|
|
Yap_DebugPutc(Yap_c_error_stream,':');
|
|
if (ap->ModuleOfPred == IDB_MODULE) {
|
|
Term t = Deref(ARG1);
|
|
if (IsAtomTerm(t)) {
|
|
Yap_plwrite(t, Yap_DebugPutc, 0);
|
|
} else if (IsIntegerTerm(t)) {
|
|
Yap_plwrite(t, Yap_DebugPutc, 0);
|
|
} else {
|
|
Functor f = FunctorOfTerm(t);
|
|
Atom At = NameOfFunctor(f);
|
|
Yap_plwrite(MkAtomTerm(At), Yap_DebugPutc, 0);
|
|
Yap_DebugPutc(Yap_c_error_stream,'/');
|
|
Yap_plwrite(MkIntTerm(ArityOfFunctor(f)), Yap_DebugPutc, 0);
|
|
}
|
|
} else {
|
|
if (ap->ArityOfPE == 0) {
|
|
Atom At = (Atom)ap->FunctorOfPred;
|
|
Yap_plwrite(MkAtomTerm(At), Yap_DebugPutc, 0);
|
|
} else {
|
|
Functor f = ap->FunctorOfPred;
|
|
Atom At = NameOfFunctor(f);
|
|
Yap_plwrite(MkAtomTerm(At), Yap_DebugPutc, 0);
|
|
Yap_DebugPutc(Yap_c_error_stream,'/');
|
|
Yap_plwrite(MkIntTerm(ArityOfFunctor(f)), Yap_DebugPutc, 0);
|
|
}
|
|
}
|
|
Yap_DebugPutc(Yap_c_error_stream,'\n');
|
|
}
|
|
#endif
|
|
stack = (path_stack_entry *)TR;
|
|
cl.Code = cl.CurrentCode = beg;
|
|
sp = push_path(stack, NULL, &cl, &cint);
|
|
add_to_index(&cint, first, sp, &cl);
|
|
}
|
|
|
|
|
|
static void
|
|
contract_ftable(yamop *ipc, ClauseUnion *blk, PredEntry *ap, Functor f) {
|
|
int n = ipc->u.sssl.s;
|
|
FuncSwiEntry *fep;
|
|
|
|
if (n > MIN_HASH_ENTRIES) {
|
|
fep = lookup_f_hash(f, ipc->u.sssl.l, n);
|
|
} else {
|
|
fep = (FuncSwiEntry *)(ipc->u.sssl.l);
|
|
while (fep->Tag != f) fep++;
|
|
}
|
|
fep->Label = (CELL)FAILCODE;
|
|
}
|
|
|
|
static void
|
|
contract_ctable(yamop *ipc, ClauseUnion *blk, PredEntry *ap, Term at) {
|
|
int n = ipc->u.sssl.s;
|
|
AtomSwiEntry *cep;
|
|
|
|
if (n > MIN_HASH_ENTRIES) {
|
|
cep = lookup_c_hash(at, ipc->u.sssl.l, n);
|
|
} else {
|
|
cep = (AtomSwiEntry *)(ipc->u.sssl.l);
|
|
while (cep->Tag != at) cep++;
|
|
}
|
|
cep->Label = (CELL)FAILCODE;
|
|
}
|
|
|
|
static void
|
|
remove_from_index(PredEntry *ap, path_stack_entry *sp, ClauseDef *cls, yamop *bg, yamop *lt, struct intermediates *cint) {
|
|
/* last clause to experiment with */
|
|
yamop *ipc = ap->cs.p_code.TrueCodeOfPred;
|
|
UInt current_arity = 0;
|
|
|
|
sp = init_block_stack(sp, ipc, ap);
|
|
if (ap->cs.p_code.NOfClauses == 1) {
|
|
if (ap->PredFlags & IndexedPredFlag) {
|
|
Yap_RemoveIndexation(ap);
|
|
return;
|
|
}
|
|
ap->cs.p_code.TrueCodeOfPred = ap->cs.p_code.FirstClause;
|
|
if (ap->PredFlags & SpiedPredFlag) {
|
|
ap->OpcodeOfPred = Yap_opcode(_spy_pred);
|
|
ap->CodeOfPred = (yamop *)(&(ap->OpcodeOfPred));
|
|
} else {
|
|
ap->OpcodeOfPred = ap->cs.p_code.FirstClause->opc;
|
|
ap->CodeOfPred = ap->cs.p_code.TrueCodeOfPred;
|
|
}
|
|
return;
|
|
}
|
|
/* try to refine the interval using the indexing code */
|
|
while (ipc != NULL) {
|
|
op_numbers op = Yap_op_from_opcode(ipc->opc);
|
|
|
|
switch(op) {
|
|
case _retry_profiled:
|
|
case _count_retry:
|
|
ipc = NEXTOP(ipc, p);
|
|
break;
|
|
case _try_in:
|
|
/* I cannot expand a predicate that starts on a variable,
|
|
have to expand the index.
|
|
*/
|
|
if (IN_BETWEEN(bg,ipc->u.l.l,lt)) {
|
|
sp = kill_clause(ipc, bg, lt, sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* just go to next instruction */
|
|
ipc = NEXTOP(ipc,l);
|
|
}
|
|
break;
|
|
case _try_clause:
|
|
case _retry:
|
|
/* I cannot expand a predicate that starts on a variable,
|
|
have to expand the index.
|
|
*/
|
|
if (IN_BETWEEN(bg,ipc->u.ld.d,lt)) {
|
|
sp = kill_clause(ipc, bg, lt, sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* just go to next instruction */
|
|
ipc = NEXTOP(ipc,ld);
|
|
}
|
|
break;
|
|
case _try_clause2:
|
|
case _try_clause3:
|
|
case _try_clause4:
|
|
case _retry2:
|
|
case _retry3:
|
|
case _retry4:
|
|
/* I cannot expand a predicate that starts on a variable,
|
|
have to expand the index.
|
|
*/
|
|
if (IN_BETWEEN(bg,ipc->u.l.l,lt)) {
|
|
sp = kill_clause(ipc, bg, lt, sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* just go to next instruction */
|
|
ipc = NEXTOP(ipc,l);
|
|
}
|
|
break;
|
|
case _trust_logical_pred:
|
|
ipc = NEXTOP(ipc,l);
|
|
break;
|
|
case _trust:
|
|
if (IN_BETWEEN(bg,ipc->u.ld.d,lt)) {
|
|
sp = kill_clause(ipc, bg, lt, sp, ap);
|
|
}
|
|
ipc = pop_path(&sp, cls, ap);
|
|
break;
|
|
case _stale_lu_index:
|
|
case _enter_lu_pred:
|
|
sp = kill_clause(ipc, bg, lt, sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
break;
|
|
/* instructions type l */
|
|
case _try_me:
|
|
case _retry_me:
|
|
sp = push_path(sp, &(ipc->u.ld.d), cls, cint);
|
|
ipc = NEXTOP(ipc,ld);
|
|
break;
|
|
case _profiled_trust_me:
|
|
case _trust_me:
|
|
case _count_trust_me:
|
|
ipc = NEXTOP(ipc,ld);
|
|
break;
|
|
case _jump:
|
|
sp = cross_block(sp, &ipc->u.l.l, ap);
|
|
/* just skip for now, but should worry about memory management */
|
|
ipc = ipc->u.l.l;
|
|
break;
|
|
case _jump_if_var:
|
|
sp = push_path(sp, &(ipc->u.l.l), cls, cint);
|
|
ipc = NEXTOP(ipc,l);
|
|
break;
|
|
case _jump_if_nonvar:
|
|
sp = push_path(sp, &(ipc->u.xll.l2), cls, cint);
|
|
sp = cross_block(sp, &ipc->u.xll.l1, ap);
|
|
ipc = ipc->u.xll.l1;
|
|
break;
|
|
/* instructions type e */
|
|
case _switch_on_type:
|
|
sp = push_path(sp, &(ipc->u.llll.l4), cls, cint);
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
add_head_info(cls, 1);
|
|
} else {
|
|
add_info(cls, 1);
|
|
}
|
|
if (IsPairTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.llll.l1;
|
|
current_arity = 2;
|
|
if (IN_BETWEEN(bg,nipc,lt)) {
|
|
/* jump straight to clause */
|
|
ipc->u.llll.l1 = FAILCODE;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* go on */
|
|
sp = cross_block(sp, &ipc->u.llll.l1, ap);
|
|
ipc = nipc;
|
|
}
|
|
} else if (IsAtomOrIntTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.llll.l2;
|
|
if (IN_BETWEEN(bg,nipc,lt)) {
|
|
/* jump straight to clause */
|
|
ipc->u.llll.l2 = FAILCODE;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* I do not have to worry about crossing a block here */
|
|
ipc = nipc;
|
|
}
|
|
} else if (IsApplTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.llll.l3;
|
|
if (IN_BETWEEN(bg,nipc,lt)) {
|
|
/* jump straight to clause */
|
|
ipc->u.llll.l3 = FAILCODE;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* I do not have to worry about crossing a block here */
|
|
ipc = nipc;
|
|
}
|
|
} else {
|
|
/* we can't separate into four groups,
|
|
need to restart.
|
|
*/
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
}
|
|
break;
|
|
case _switch_list_nl:
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
break;
|
|
case _switch_on_arg_type:
|
|
sp = push_path(sp, &(ipc->u.xllll.l4), cls, cint);
|
|
current_arity = 2;
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
add_head_info(cls, Yap_regtoregno(ipc->u.xllll.x));
|
|
} else {
|
|
add_info(cls, Yap_regtoregno(ipc->u.xllll.x));
|
|
}
|
|
if (IsPairTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.xllll.l1;
|
|
if (IN_BETWEEN(bg,nipc,lt)) {
|
|
/* jump straight to clause */
|
|
ipc->u.xllll.l1 = FAILCODE;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* go on */
|
|
sp = cross_block(sp, &ipc->u.xllll.l1, ap);
|
|
ipc = nipc;
|
|
}
|
|
} else if (IsAtomOrIntTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.xllll.l2;
|
|
if (IN_BETWEEN(bg,nipc,lt)) {
|
|
/* jump straight to clause */
|
|
ipc->u.xllll.l2 = FAILCODE;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* I do not have to worry about crossing a block here */
|
|
ipc = nipc;
|
|
}
|
|
} else if (IsApplTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.xllll.l3;
|
|
if (IN_BETWEEN(bg,nipc,lt)) {
|
|
/* jump straight to clause */
|
|
ipc->u.xllll.l3 = FAILCODE;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* I do not have to worry about crossing a block here */
|
|
ipc = nipc;
|
|
}
|
|
} else {
|
|
/* we can't separate into four groups,
|
|
need to restart.
|
|
*/
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
}
|
|
break;
|
|
case _switch_on_sub_arg_type:
|
|
sp = push_path(sp, &(ipc->u.sllll.l4), cls, cint);
|
|
current_arity = 2;
|
|
add_arg_info(cls, ap, ipc->u.sllll.s+1);
|
|
if (IsPairTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.sllll.l1;
|
|
if (IN_BETWEEN(bg,nipc,lt)) {
|
|
/* jump straight to clause */
|
|
ipc->u.sllll.l1 = FAILCODE;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* go on */
|
|
sp = cross_block(sp, &ipc->u.sllll.l1, ap);
|
|
ipc = nipc;
|
|
}
|
|
} else if (IsAtomOrIntTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.sllll.l2;
|
|
if (IN_BETWEEN(bg,nipc,lt)) {
|
|
/* jump straight to clause */
|
|
ipc->u.sllll.l2 = FAILCODE;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* I do not have to worry about crossing a block here */
|
|
ipc = nipc;
|
|
}
|
|
} else if (IsApplTerm(cls->Tag)) {
|
|
yamop *nipc = ipc->u.sllll.l3;
|
|
if (IN_BETWEEN(bg,nipc,lt)) {
|
|
/* jump straight to clause */
|
|
ipc->u.sllll.l3 = FAILCODE;
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
/* I do not have to worry about crossing a block here */
|
|
ipc = nipc;
|
|
}
|
|
} else {
|
|
/* we can't separate into four groups,
|
|
need to restart.
|
|
*/
|
|
sp = kill_block(sp, ap);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
}
|
|
break;
|
|
case _if_not_then:
|
|
ipc = pop_path(&sp, cls, ap);
|
|
break;
|
|
/* instructions type ollll */
|
|
case _switch_on_func:
|
|
case _if_func:
|
|
case _go_on_func:
|
|
{
|
|
FuncSwiEntry *fe;
|
|
yamop *newpc;
|
|
Functor f = (Functor)RepAppl(cls->Tag);
|
|
|
|
if (op == _switch_on_func) {
|
|
fe = lookup_f_hash(f, ipc->u.sssl.l, ipc->u.sssl.s);
|
|
} else {
|
|
fe = lookup_f(f, ipc->u.sssl.l, ipc->u.sssl.s);
|
|
}
|
|
if (!IsExtensionFunctor(f)) {
|
|
current_arity = ArityOfFunctor(f);
|
|
}
|
|
newpc = (yamop *)(fe->Label);
|
|
|
|
if (newpc == (yamop *)&(ap->cs.p_code.ExpandCode)) {
|
|
/* we found it */
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else if (newpc == FAILCODE) {
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else if (IN_BETWEEN(bg,fe->Label,lt)) {
|
|
/* oops, nothing there */
|
|
contract_ftable(ipc, current_block(sp), ap, f);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
yamop *newpc = (yamop *)(fe->Label);
|
|
sp = fetch_new_block(sp, &(ipc->u.sssl.l), ap);
|
|
sp = cross_block(sp, (yamop **)&(fe->Label), ap);
|
|
ipc = newpc;
|
|
}
|
|
}
|
|
break;
|
|
case _index_dbref:
|
|
cls->Tag = cls->u.t_ptr;
|
|
ipc = NEXTOP(ipc,e);
|
|
break;
|
|
case _index_blob:
|
|
cls->Tag = MkIntTerm(RepAppl(cls->u.t_ptr)[1]);
|
|
ipc = NEXTOP(ipc,e);
|
|
break;
|
|
case _switch_on_cons:
|
|
case _if_cons:
|
|
case _go_on_cons:
|
|
{
|
|
AtomSwiEntry *ae;
|
|
yamop *newpc;
|
|
Term at = cls->Tag;
|
|
|
|
if (op == _switch_on_cons) {
|
|
ae = lookup_c_hash(at,ipc->u.sssl.l,ipc->u.sssl.s);
|
|
} else {
|
|
ae = lookup_c(at, ipc->u.sssl.l, ipc->u.sssl.s);
|
|
}
|
|
newpc = (yamop *)(ae->Label);
|
|
|
|
if (newpc == (yamop *)&(ap->cs.p_code.ExpandCode)) {
|
|
/* we found it */
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else if (newpc == FAILCODE) {
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else if (IN_BETWEEN(bg,ae->Label,lt)) {
|
|
/* oops, nothing there */
|
|
contract_ctable(ipc, current_block(sp), ap, at);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
} else {
|
|
yamop *newpc = (yamop *)(ae->Label);
|
|
|
|
sp = fetch_new_block(sp, &(ipc->u.sssl.l), ap);
|
|
sp = cross_block(sp, (yamop **)&(ae->Label), ap);
|
|
ipc = newpc;
|
|
}
|
|
}
|
|
break;
|
|
case _expand_index:
|
|
ipc = pop_path(&sp, cls, ap);
|
|
break;
|
|
case _expand_clauses:
|
|
nullify_expand_clause(ipc, sp, cls);
|
|
ipc = pop_path(&sp, cls, ap);
|
|
break;
|
|
case _lock_lu:
|
|
ipc = NEXTOP(ipc,p);
|
|
break;
|
|
case _unlock_lu:
|
|
ipc = NEXTOP(ipc,e);
|
|
break;
|
|
default:
|
|
if (IN_BETWEEN(bg,ipc,lt)) {
|
|
sp = kill_unsafe_block(sp, op, ap, TRUE, TRUE, cls);
|
|
}
|
|
ipc = pop_path(&sp, cls, ap);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* clause is locked */
|
|
void
|
|
Yap_RemoveClauseFromIndex(PredEntry *ap, yamop *beg) {
|
|
ClauseDef cl;
|
|
/* first clause */
|
|
path_stack_entry *stack, *sp;
|
|
int cb;
|
|
yamop *last;
|
|
struct intermediates cint;
|
|
|
|
if (ap->PredFlags & MegaClausePredFlag) {
|
|
return;
|
|
}
|
|
cint.expand_block = NULL;
|
|
cint.CodeStart = cint.BlobsStart = cint.cpc = cint.icpc = NULL;
|
|
if ((cb = setjmp(cint.CompilerBotch)) == 3) {
|
|
restore_machine_regs();
|
|
Yap_gcl(Yap_Error_Size, ap->ArityOfPE, ENV, CP);
|
|
save_machine_regs();
|
|
} else if (cb == 2) {
|
|
restore_machine_regs();
|
|
Yap_growheap(FALSE, Yap_Error_Size, NULL);
|
|
save_machine_regs();
|
|
} else if (cb == 4) {
|
|
restore_machine_regs();
|
|
Yap_growtrail(Yap_Error_Size, FALSE);
|
|
save_machine_regs();
|
|
}
|
|
Yap_Error_Size = 0;
|
|
Yap_ErrorMessage = NULL;
|
|
if (cb) {
|
|
/* cannot rely on the code */
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
Yap_kill_iblock((ClauseUnion *)ClauseCodeToLogUpdIndex(ap->cs.p_code.TrueCodeOfPred),NULL, ap);
|
|
} else {
|
|
StaticIndex *cl;
|
|
|
|
cl = ClauseCodeToStaticIndex(ap->cs.p_code.TrueCodeOfPred);
|
|
Yap_kill_iblock((ClauseUnion *)cl, NULL, ap);
|
|
}
|
|
return;
|
|
}
|
|
#ifdef DEBUG
|
|
if (Yap_Option['i' - 'a' + 1]) {
|
|
Term tmod = ap->ModuleOfPred;
|
|
|
|
if (!tmod) tmod = TermProlog;
|
|
Yap_DebugPutc(Yap_c_error_stream,'-');
|
|
Yap_DebugPutc(Yap_c_error_stream,'\t');
|
|
Yap_plwrite(tmod, Yap_DebugPutc, 0);
|
|
Yap_DebugPutc(Yap_c_error_stream,':');
|
|
if (ap->ModuleOfPred != IDB_MODULE) {
|
|
if (ap->ArityOfPE == 0) {
|
|
Atom At = (Atom)ap->FunctorOfPred;
|
|
Yap_plwrite(MkAtomTerm(At), Yap_DebugPutc, 0);
|
|
} else {
|
|
Functor f = ap->FunctorOfPred;
|
|
Atom At = NameOfFunctor(f);
|
|
Yap_plwrite(MkAtomTerm(At), Yap_DebugPutc, 0);
|
|
Yap_DebugPutc(Yap_c_error_stream,'/');
|
|
Yap_plwrite(MkIntTerm(ArityOfFunctor(f)), Yap_DebugPutc, 0);
|
|
}
|
|
} else {
|
|
if (ap->PredFlags & NumberDBPredFlag) {
|
|
Int id = ap->src.IndxId;
|
|
Yap_plwrite(MkIntegerTerm(id), Yap_DebugPutc, 0);
|
|
} else if (ap->PredFlags & AtomDBPredFlag) {
|
|
Atom At = (Atom)ap->FunctorOfPred;
|
|
Yap_plwrite(MkAtomTerm(At), Yap_DebugPutc, 0);
|
|
} else {
|
|
Functor f = ap->FunctorOfPred;
|
|
Atom At = NameOfFunctor(f);
|
|
Yap_plwrite(MkAtomTerm(At), Yap_DebugPutc, 0);
|
|
Yap_DebugPutc(Yap_c_error_stream,'/');
|
|
Yap_plwrite(MkIntTerm(ArityOfFunctor(f)), Yap_DebugPutc, 0);
|
|
}
|
|
}
|
|
Yap_DebugPutc(Yap_c_error_stream,'\n');
|
|
}
|
|
#endif
|
|
stack = (path_stack_entry *)TR;
|
|
if (ap->PredFlags & LogUpdatePredFlag) {
|
|
LogUpdClause *c = ClauseCodeToLogUpdClause(beg);
|
|
cl.Code = cl.CurrentCode = beg;
|
|
last = (yamop *)((CODEADDR)c+c->ClSize);
|
|
} else {
|
|
StaticClause *c = ClauseCodeToStaticClause(beg);
|
|
cl.Code = cl.CurrentCode = beg;
|
|
last = (yamop *)((CODEADDR)c+c->ClSize);
|
|
}
|
|
sp = push_path(stack, NULL, &cl, &cint);
|
|
if (ap->cs.p_code.NOfClauses == 0) {
|
|
/* there was no indexing code */
|
|
ap->CodeOfPred = ap->cs.p_code.TrueCodeOfPred = FAILCODE;
|
|
ap->OpcodeOfPred = Yap_opcode(_op_fail);
|
|
} else {
|
|
remove_from_index(ap, sp, &cl, beg, last, &cint);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
store_clause_choice_point(Term t1, Term tb, Term tr, yamop *ipc, PredEntry *pe, yamop *ap_pc, yamop *cp_pc)
|
|
{
|
|
Term tpc = MkIntegerTerm((Int)ipc);
|
|
Term tpe = MkIntegerTerm((Int)pe);
|
|
CELL *tsp = ASP-5;
|
|
choiceptr bptr = ((choiceptr)tsp)-1;
|
|
|
|
tsp[0] = tpe;
|
|
tsp[1] = tpc;
|
|
tsp[2] = t1;
|
|
tsp[3] = tb;
|
|
tsp[4] = tr;
|
|
bptr->cp_tr = TR;
|
|
HB = bptr->cp_h = H;
|
|
#ifdef DEPTH_LIMIT
|
|
bptr->cp_depth = DEPTH;
|
|
#endif
|
|
bptr->cp_b = B;
|
|
bptr->cp_cp = cp_pc;
|
|
bptr->cp_ap = ap_pc;
|
|
bptr->cp_env = ENV;
|
|
/* now, install the new YREG =*/
|
|
ASP = (CELL *)bptr;
|
|
ASP[E_CB] = (CELL)bptr;
|
|
B = bptr;
|
|
#ifdef YAPOR
|
|
SCH_set_load(B);
|
|
#endif /* YAPOR */
|
|
SET_BB(bptr);
|
|
}
|
|
|
|
static void
|
|
update_clause_choice_point(yamop *ipc, yamop *ap_pc)
|
|
{
|
|
Term tpc = MkIntegerTerm((Int)ipc);
|
|
B->cp_args[1] = tpc;
|
|
B->cp_h = H;
|
|
B->cp_ap = ap_pc;
|
|
}
|
|
|
|
static LogUpdClause *
|
|
to_clause(yamop *ipc, PredEntry *ap)
|
|
{
|
|
if (ap->PredFlags & LogUpdatePredFlag)
|
|
return lu_clause(ipc);
|
|
else if (ap->PredFlags & MegaClausePredFlag)
|
|
return (LogUpdClause *)ipc;
|
|
else
|
|
return (LogUpdClause *)simple_static_clause(ipc);
|
|
}
|
|
|
|
LogUpdClause *
|
|
Yap_FollowIndexingCode(PredEntry *ap, yamop *ipc, Term Terms[3], yamop *ap_pc, yamop *cp_pc)
|
|
{
|
|
CELL *s_reg = NULL;
|
|
Term t = TermNil;
|
|
yamop *start_pc = ipc;
|
|
choiceptr b0 = NULL;
|
|
yamop **jlbl = NULL;
|
|
int lu_pred = ap->PredFlags & LogUpdatePredFlag;
|
|
|
|
if (ap->ModuleOfPred != IDB_MODULE) {
|
|
if (ap->ArityOfPE) {
|
|
CELL *tar = RepAppl(Deref(Terms[0]));
|
|
UInt i;
|
|
|
|
for (i = 1; i <= ap->ArityOfPE; i++) {
|
|
XREGS[i] = tar[i];
|
|
}
|
|
}
|
|
}
|
|
/* try to refine the interval using the indexing code */
|
|
while (ipc != NULL) {
|
|
op_numbers op = Yap_op_from_opcode(ipc->opc);
|
|
|
|
switch(op) {
|
|
case _try_in:
|
|
update_clause_choice_point(NEXTOP(ipc,l), ap_pc);
|
|
if (lu_pred)
|
|
return lu_clause(ipc->u.l.l);
|
|
else
|
|
return (LogUpdClause *)static_clause(ipc->u.l.l, ap);
|
|
break;
|
|
case _try_clause:
|
|
if (b0 == NULL)
|
|
store_clause_choice_point(Terms[0], Terms[1], Terms[2], NEXTOP(ipc,ld), ap, ap_pc, cp_pc);
|
|
else {
|
|
B = b0;
|
|
b0 = NULL;
|
|
update_clause_choice_point(NEXTOP(ipc,ld), ap_pc);
|
|
}
|
|
if (lu_pred)
|
|
return lu_clause(ipc->u.ld.d);
|
|
else
|
|
return (LogUpdClause *)static_clause(ipc->u.ld.d, ap);
|
|
case _try_clause2:
|
|
case _try_clause3:
|
|
case _try_clause4:
|
|
if (b0 == NULL)
|
|
store_clause_choice_point(Terms[0], Terms[1], Terms[2], NEXTOP(ipc,l), ap, ap_pc, cp_pc);
|
|
else {
|
|
B = b0;
|
|
b0 = NULL;
|
|
update_clause_choice_point(NEXTOP(ipc,l), ap_pc);
|
|
}
|
|
if (lu_pred)
|
|
return lu_clause(ipc->u.l.l);
|
|
else
|
|
return (LogUpdClause *)static_clause(ipc->u.l.l, ap);
|
|
case _try_me:
|
|
if (b0 == NULL)
|
|
store_clause_choice_point(Terms[0], Terms[1], Terms[2], ipc->u.ld.d, ap, ap_pc, cp_pc);
|
|
else {
|
|
B = b0;
|
|
b0 = NULL;
|
|
update_clause_choice_point(ipc->u.ld.d, ap_pc);
|
|
}
|
|
ipc = NEXTOP(ipc,ld);
|
|
break;
|
|
case _retry_profiled:
|
|
case _count_retry:
|
|
ipc = NEXTOP(ipc,p);
|
|
break;
|
|
case _retry:
|
|
update_clause_choice_point(NEXTOP(ipc,ld),ap_pc);
|
|
if (lu_pred)
|
|
return lu_clause(ipc->u.ld.d);
|
|
else
|
|
return (LogUpdClause *)static_clause(ipc->u.ld.d, ap);
|
|
case _retry2:
|
|
case _retry3:
|
|
case _retry4:
|
|
update_clause_choice_point(NEXTOP(ipc,l),ap_pc);
|
|
if (lu_pred)
|
|
return lu_clause(ipc->u.l.l);
|
|
else
|
|
return (LogUpdClause *)static_clause(ipc->u.l.l, ap);
|
|
case _retry_me:
|
|
update_clause_choice_point(ipc->u.ld.d,ap_pc);
|
|
ipc = NEXTOP(ipc,ld);
|
|
break;
|
|
case _trust:
|
|
#ifdef CUT_C
|
|
{
|
|
while (POP_CHOICE_POINT(B->cp_b))
|
|
{
|
|
POP_EXECUTE();
|
|
}
|
|
}
|
|
#endif /* CUT_C */
|
|
#ifdef YAPOR
|
|
{
|
|
choiceptr cut_pt;
|
|
cut_pt = B->cp_b;
|
|
CUT_prune_to(cut_pt);
|
|
B = cut_pt;
|
|
}
|
|
#else
|
|
B = B->cp_b;
|
|
#endif /* YAPOR */
|
|
b0 = B;
|
|
if (lu_pred)
|
|
return lu_clause(ipc->u.ld.d);
|
|
else
|
|
return (LogUpdClause *)static_clause(ipc->u.ld.d, ap);
|
|
case _profiled_trust_me:
|
|
case _trust_me:
|
|
case _count_trust_me:
|
|
b0 = B;
|
|
#ifdef CUT_C
|
|
{
|
|
while (POP_CHOICE_POINT(B->cp_b))
|
|
{
|
|
POP_EXECUTE();
|
|
}
|
|
}
|
|
#endif /* CUT_C */
|
|
#ifdef YAPOR
|
|
{
|
|
choiceptr cut_pt;
|
|
cut_pt = B->cp_b;
|
|
CUT_prune_to(cut_pt);
|
|
B = cut_pt;
|
|
}
|
|
#else
|
|
B = B->cp_b;
|
|
#endif /* YAPOR */
|
|
ipc = NEXTOP(ipc,ld);
|
|
break;
|
|
case _trust_logical_pred:
|
|
{
|
|
LogUpdIndex *cl = (LogUpdIndex *)ipc->u.l.l;
|
|
/* check if we are the ones using this code */
|
|
ipc = NEXTOP(ipc,l);
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
LOCK(cl->ClLock);
|
|
DEC_CLREF_COUNT(cl);
|
|
/* clear the entry from the trail */
|
|
TR = --(B->cp_tr);
|
|
/* actually get rid of the code */
|
|
if (cl->ClRefCount == 0 && cl->ClFlags & ErasedMask) {
|
|
UNLOCK(cl->ClLock);
|
|
/* I am the last one using this clause, hence I don't need a lock
|
|
to dispose of it
|
|
*/
|
|
ipc = Yap_ErLogUpdIndex(cl, ipc);
|
|
} else {
|
|
UNLOCK(cl->ClLock);
|
|
}
|
|
#else
|
|
if (TrailTerm(B->cp_tr-1) == CLREF_TO_TRENTRY(cl) &&
|
|
B->cp_tr != B->cp_b->cp_tr) {
|
|
cl->ClFlags &= ~InUseMask;
|
|
/* clear the entry from the trail */
|
|
TR = --(B->cp_tr);
|
|
/* next, recover space for the indexing code if it was erased */
|
|
if (cl->ClFlags & ErasedMask) {
|
|
yamop *next = ipc->u.ld.d;
|
|
if (next != FAILCODE) {
|
|
LogUpdClause *lcl = ClauseCodeToLogUpdClause(next);
|
|
/* make sure we don't erase the clause we are jumping too */
|
|
if (lcl->ClRefCount == 1 && !(lcl->ClFlags & InUseMask)) {
|
|
lcl->ClFlags |= InUseMask;
|
|
TRAIL_CLREF(lcl);
|
|
}
|
|
}
|
|
ipc = Yap_ErLogUpdIndex(cl, ipc);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
break;
|
|
case _stale_lu_index:
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
LOCK(ap->PELock);
|
|
if (!same_lu_block(jlbl, ipc)) {
|
|
ipc = *jlbl;
|
|
UNLOCK(ap->PELock);
|
|
break;
|
|
}
|
|
#endif
|
|
while (TRUE) {
|
|
yamop *nipc = clean_up_index(ipc->u.Ill.I, jlbl, ap);
|
|
if (nipc == NULL) {
|
|
/* not enough space */
|
|
H[0] = Terms[0];
|
|
H[1] = Terms[1];
|
|
H[2] = Terms[2];
|
|
H += 3;
|
|
if (!Yap_growheap(FALSE, Yap_Error_Size, NULL)) {
|
|
UNLOCK(ap->PELock);
|
|
Yap_Error(OUT_OF_HEAP_ERROR, TermNil, Yap_ErrorMessage);
|
|
return NULL;
|
|
}
|
|
H -= 3;
|
|
Terms[0] = H[0];
|
|
Terms[1] = H[1];
|
|
Terms[2] = H[2];
|
|
} else {
|
|
UNLOCK(ap->PELock);
|
|
ipc = nipc;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case _enter_lu_pred:
|
|
{
|
|
LogUpdIndex *cl = ipc->u.Ill.I;
|
|
LOCK(cl->ClLock);
|
|
/* indicate the indexing code is being used */
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
/* just store a reference */
|
|
INC_CLREF_COUNT(cl);
|
|
TRAIL_CLREF(cl);
|
|
#else
|
|
if (!(cl->ClFlags & InUseMask)) {
|
|
cl->ClFlags |= InUseMask;
|
|
TRAIL_CLREF(cl);
|
|
}
|
|
#endif
|
|
UNLOCK(cl->ClLock);
|
|
}
|
|
ipc = ipc->u.Ill.l1;
|
|
break;
|
|
case _jump:
|
|
ipc = ipc->u.l.l;
|
|
break;
|
|
case _jump_if_var:
|
|
{
|
|
Term t = Deref(ARG1);
|
|
if (IsVarTerm(t)) {
|
|
jlbl = &(ipc->u.l.l);
|
|
ipc = ipc->u.l.l;
|
|
} else {
|
|
ipc = NEXTOP(ipc,l);
|
|
}
|
|
}
|
|
break;
|
|
case _jump_if_nonvar:
|
|
{
|
|
Term t = Deref(XREGS[arg_from_x(ipc->u.xll.x)]);
|
|
if (!IsVarTerm(t)) {
|
|
jlbl = &(ipc->u.xll.l1);
|
|
ipc = ipc->u.xll.l1;
|
|
} else {
|
|
ipc = NEXTOP(ipc,xll);
|
|
}
|
|
}
|
|
break;
|
|
/* instructions type e */
|
|
case _switch_on_type:
|
|
t = Deref(ARG1);
|
|
if (IsVarTerm(t)) {
|
|
jlbl = &(ipc->u.llll.l4);
|
|
ipc = ipc->u.llll.l4;
|
|
} else if (IsPairTerm(t)) {
|
|
jlbl = &(ipc->u.llll.l1);
|
|
ipc = ipc->u.llll.l1;
|
|
s_reg = RepPair(t);
|
|
} else if (IsAtomOrIntTerm(t)) {
|
|
jlbl = &(ipc->u.llll.l2);
|
|
ipc = ipc->u.llll.l2;
|
|
} else {
|
|
jlbl = &(ipc->u.llll.l3);
|
|
ipc = ipc->u.llll.l3;
|
|
}
|
|
break;
|
|
case _switch_list_nl:
|
|
t = Deref(ARG1);
|
|
if (IsVarTerm(t)) {
|
|
jlbl = &(ipc->u.ollll.l4);
|
|
ipc = ipc->u.ollll.l4;
|
|
} else if (IsPairTerm(t)) {
|
|
jlbl = &(ipc->u.ollll.l1);
|
|
ipc = ipc->u.ollll.l1;
|
|
s_reg = RepPair(t);
|
|
} else if (t == TermNil) {
|
|
jlbl = &(ipc->u.ollll.l2);
|
|
ipc = ipc->u.ollll.l2;
|
|
} else {
|
|
jlbl = &(ipc->u.ollll.l3);
|
|
ipc = ipc->u.ollll.l3;
|
|
}
|
|
break;
|
|
case _switch_on_arg_type:
|
|
t = Deref(XREGS[arg_from_x(ipc->u.xllll.x)]);
|
|
if (IsVarTerm(t)) {
|
|
jlbl = &(ipc->u.xllll.l4);
|
|
ipc = ipc->u.xllll.l4;
|
|
} else if (IsPairTerm(t)) {
|
|
jlbl = &(ipc->u.xllll.l1);
|
|
ipc = ipc->u.xllll.l1;
|
|
s_reg = RepPair(t);
|
|
} else if (IsAtomOrIntTerm(t)) {
|
|
jlbl = &(ipc->u.xllll.l1);
|
|
ipc = ipc->u.xllll.l2;
|
|
} else {
|
|
jlbl = &(ipc->u.xllll.l3);
|
|
ipc = ipc->u.xllll.l3;
|
|
}
|
|
break;
|
|
case _switch_on_sub_arg_type:
|
|
t = Deref(s_reg[ipc->u.sllll.s]);
|
|
if (IsVarTerm(t)) {
|
|
jlbl = &(ipc->u.sllll.l4);
|
|
ipc = ipc->u.sllll.l4;
|
|
} else if (IsPairTerm(t)) {
|
|
jlbl = &(ipc->u.sllll.l1);
|
|
ipc = ipc->u.sllll.l1;
|
|
s_reg = RepPair(t);
|
|
} else if (IsAtomOrIntTerm(t)) {
|
|
jlbl = &(ipc->u.sllll.l2);
|
|
ipc = ipc->u.sllll.l2;
|
|
} else {
|
|
jlbl = &(ipc->u.sllll.l3);
|
|
ipc = ipc->u.sllll.l3;
|
|
}
|
|
break;
|
|
case _if_not_then:
|
|
t = Deref(ARG1);
|
|
if (IsVarTerm(t)) {
|
|
jlbl = &(ipc->u.clll.l3);
|
|
ipc = ipc->u.clll.l3;
|
|
} else if (!IsVarTerm(t) && t != ipc->u.clll.c) {
|
|
jlbl = &(ipc->u.clll.l1);
|
|
ipc = ipc->u.clll.l1;
|
|
} else {
|
|
jlbl = &(ipc->u.clll.l2);
|
|
ipc = ipc->u.clll.l2;
|
|
}
|
|
break;
|
|
/* instructions type ollll */
|
|
case _switch_on_func:
|
|
case _if_func:
|
|
case _go_on_func:
|
|
{
|
|
FuncSwiEntry *fe;
|
|
Functor f;
|
|
|
|
s_reg = RepAppl(t);
|
|
f = (Functor)s_reg[0];
|
|
s_reg++;
|
|
if (op == _switch_on_func) {
|
|
fe = lookup_f_hash(f, ipc->u.sssl.l, ipc->u.sssl.s);
|
|
} else {
|
|
fe = lookup_f(f, ipc->u.sssl.l, ipc->u.sssl.s);
|
|
}
|
|
jlbl = (yamop **)(&fe->Label);
|
|
ipc = (yamop *)(fe->Label);
|
|
}
|
|
break;
|
|
case _index_dbref:
|
|
t = AbsAppl(s_reg-1);
|
|
ipc = NEXTOP(ipc,e);
|
|
break;
|
|
case _index_blob:
|
|
t = MkIntTerm(s_reg[0]);
|
|
ipc = NEXTOP(ipc,e);
|
|
break;
|
|
case _switch_on_cons:
|
|
case _if_cons:
|
|
case _go_on_cons:
|
|
{
|
|
AtomSwiEntry *ae;
|
|
|
|
if (op == _switch_on_cons) {
|
|
ae = lookup_c_hash(t, ipc->u.sssl.l, ipc->u.sssl.s);
|
|
} else {
|
|
ae = lookup_c(t, ipc->u.sssl.l, ipc->u.sssl.s);
|
|
}
|
|
jlbl = (yamop **)(&ae->Label);
|
|
ipc = (yamop *)(ae->Label);
|
|
}
|
|
break;
|
|
case _expand_index:
|
|
case _expand_clauses:
|
|
XREGS[ap->ArityOfPE+1] = (CELL)s_reg;
|
|
XREGS[ap->ArityOfPE+2] = (CELL)t;
|
|
XREGS[ap->ArityOfPE+3] = Terms[0];
|
|
XREGS[ap->ArityOfPE+4] = Terms[1];
|
|
XREGS[ap->ArityOfPE+5] = Terms[2];
|
|
LOCK(ap->PELock);
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
if (!same_lu_block(jlbl, ipc)) {
|
|
ipc = *jlbl;
|
|
UNLOCK(ap->PELock);
|
|
break;
|
|
}
|
|
#endif
|
|
ipc = ExpandIndex(ap, 5);
|
|
UNLOCK(ap->PELock);
|
|
s_reg = (CELL *)XREGS[ap->ArityOfPE+1];
|
|
t = XREGS[ap->ArityOfPE+2];
|
|
Terms[0] = XREGS[ap->ArityOfPE+3];
|
|
Terms[1] = XREGS[ap->ArityOfPE+4];
|
|
Terms[2] = XREGS[ap->ArityOfPE+5];
|
|
break;
|
|
case _undef_p:
|
|
return NULL;
|
|
case _lock_lu:
|
|
ipc = NEXTOP(ipc,p);
|
|
break;
|
|
case _unlock_lu:
|
|
ipc = NEXTOP(ipc,e);
|
|
break;
|
|
#if THREADS
|
|
case _thread_local:
|
|
ap = Yap_GetThreadPred(ap);
|
|
ipc = ap->CodeOfPred;
|
|
break;
|
|
#endif
|
|
case _spy_pred:
|
|
ipc = ap->cs.p_code.TrueCodeOfPred;
|
|
break;
|
|
case _index_pred:
|
|
XREGS[ap->ArityOfPE+1] = (CELL)s_reg;
|
|
XREGS[ap->ArityOfPE+2] = (CELL)t;
|
|
XREGS[ap->ArityOfPE+3] = Terms[0];
|
|
XREGS[ap->ArityOfPE+4] = Terms[1];
|
|
XREGS[ap->ArityOfPE+5] = Terms[2];
|
|
Yap_IPred(ap, 5);
|
|
start_pc = ipc = ap->cs.p_code.TrueCodeOfPred;
|
|
s_reg = (CELL *)XREGS[ap->ArityOfPE+1];
|
|
t = XREGS[ap->ArityOfPE+2];
|
|
Terms[0] = XREGS[ap->ArityOfPE+3];
|
|
Terms[1] = XREGS[ap->ArityOfPE+4];
|
|
Terms[2] = XREGS[ap->ArityOfPE+5];
|
|
break;
|
|
case _op_fail:
|
|
if (ipc == FAILCODE)
|
|
return NULL;
|
|
default:
|
|
if (b0) {
|
|
#ifdef CUT_C
|
|
{
|
|
while (POP_CHOICE_POINT(B->cp_b))
|
|
{
|
|
POP_EXECUTE();
|
|
}
|
|
}
|
|
#endif /* CUT_C */
|
|
#ifdef YAPOR
|
|
{
|
|
choiceptr cut_pt;
|
|
cut_pt = B->cp_b;
|
|
CUT_prune_to(cut_pt);
|
|
B = cut_pt;
|
|
}
|
|
#else
|
|
B = B->cp_b;
|
|
#endif /* YAPOR */
|
|
/* I did a trust */
|
|
}
|
|
if (lu_pred)
|
|
return lu_clause(ipc);
|
|
else
|
|
return (LogUpdClause *)static_clause(ipc, ap);
|
|
}
|
|
}
|
|
if (b0) {
|
|
/* I did a trust */
|
|
#ifdef CUT_C
|
|
{
|
|
while (POP_CHOICE_POINT(B->cp_b))
|
|
{
|
|
POP_EXECUTE();
|
|
}
|
|
}
|
|
#endif /* CUT_C */
|
|
#ifdef YAPOR
|
|
{
|
|
choiceptr cut_pt;
|
|
cut_pt = B->cp_b;
|
|
CUT_prune_to(cut_pt);
|
|
B = cut_pt;
|
|
}
|
|
#else
|
|
B = B->cp_b;
|
|
#endif /* YAPOR */
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
LogUpdClause *
|
|
Yap_NthClause(PredEntry *ap, Int ncls)
|
|
{
|
|
yamop
|
|
*ipc = ap->cs.p_code.TrueCodeOfPred,
|
|
*alt = NULL;
|
|
yamop **jlbl = NULL;
|
|
|
|
/* search every clause */
|
|
if (ncls == 1)
|
|
return to_clause(ap->cs.p_code.FirstClause,ap);
|
|
else if (ncls == ap->cs.p_code.NOfClauses)
|
|
return to_clause(ap->cs.p_code.LastClause,ap);
|
|
else if (ncls > ap->cs.p_code.NOfClauses)
|
|
return NULL;
|
|
else if (ncls < 0)
|
|
return NULL;
|
|
|
|
if (ap->ModuleOfPred != IDB_MODULE) {
|
|
if (ap->ArityOfPE) {
|
|
UInt i;
|
|
|
|
for (i = 1; i <= ap->ArityOfPE; i++) {
|
|
XREGS[i] = MkVarTerm();
|
|
}
|
|
}
|
|
} else {
|
|
ARG2 = MkVarTerm();
|
|
}
|
|
while (TRUE) {
|
|
op_numbers op = Yap_op_from_opcode(ipc->opc);
|
|
|
|
switch(op) {
|
|
case _try_in:
|
|
if (ncls == 1)
|
|
return to_clause(ipc->u.l.l, ap);
|
|
ncls--;
|
|
ipc = NEXTOP(ipc,l);
|
|
break;
|
|
case _retry_profiled:
|
|
case _count_retry:
|
|
ipc = NEXTOP(ipc,p);
|
|
case _try_clause:
|
|
case _retry:
|
|
if (ncls == 1)
|
|
return to_clause(ipc->u.ld.d, ap);
|
|
else if (alt == NULL) {
|
|
ncls --;
|
|
/* get there in a fell swoop */
|
|
if (ap->PredFlags & ProfiledPredFlag) {
|
|
if (ap->PredFlags & CountPredFlag) {
|
|
ipc = (yamop *)((char *)ipc+ncls*(UInt)NEXTOP(NEXTOP(NEXTOP((yamop *)NULL,ld),p),p));
|
|
} else {
|
|
ipc = (yamop *)((char *)ipc+ncls*(UInt)NEXTOP(NEXTOP((yamop *)NULL,ld),p));
|
|
}
|
|
} else if (ap->PredFlags & CountPredFlag) {
|
|
ipc = (yamop *)((char *)ipc+ncls*(UInt)NEXTOP(NEXTOP((yamop *)NULL,ld),p));
|
|
} else {
|
|
ipc = (yamop *)((char *)ipc+ncls*(UInt)NEXTOP((yamop *)NULL,ld));
|
|
}
|
|
return to_clause(ipc->u.ld.d, ap);
|
|
} else {
|
|
ncls--;
|
|
}
|
|
ipc = NEXTOP(ipc,ld);
|
|
break;
|
|
case _try_clause2:
|
|
case _try_clause3:
|
|
case _try_clause4:
|
|
case _retry2:
|
|
case _retry3:
|
|
case _retry4:
|
|
if (ncls == 1)
|
|
return to_clause(ipc->u.l.l, ap);
|
|
else if (alt == NULL) {
|
|
ncls --;
|
|
/* get there in a fell swoop */
|
|
if (ap->PredFlags & ProfiledPredFlag) {
|
|
if (ap->PredFlags & CountPredFlag) {
|
|
ipc = (yamop *)((char *)ipc+ncls*(UInt)NEXTOP(NEXTOP(NEXTOP((yamop *)NULL,l),p),p));
|
|
} else {
|
|
ipc = (yamop *)((char *)ipc+ncls*(UInt)NEXTOP(NEXTOP((yamop *)NULL,l),p));
|
|
}
|
|
} else if (ap->PredFlags & CountPredFlag) {
|
|
ipc = (yamop *)((char *)ipc+ncls*(UInt)NEXTOP(NEXTOP((yamop *)NULL,l),p));
|
|
} else {
|
|
ipc = (yamop *)((char *)ipc+ncls*(UInt)NEXTOP((yamop *)NULL,l));
|
|
}
|
|
return to_clause(ipc->u.l.l, ap);
|
|
} else {
|
|
ncls--;
|
|
}
|
|
ipc = NEXTOP(ipc,l);
|
|
break;
|
|
case _trust:
|
|
if (ncls == 1)
|
|
return to_clause(ipc->u.l.l,ap);
|
|
ncls--;
|
|
ipc = alt;
|
|
break;
|
|
case _try_me:
|
|
case _retry_me:
|
|
alt = ipc->u.ld.d;
|
|
ipc = NEXTOP(ipc,ld);
|
|
break;
|
|
case _profiled_trust_me:
|
|
case _trust_me:
|
|
case _count_trust_me:
|
|
alt = NULL;
|
|
ipc = NEXTOP(ipc,ld);
|
|
break;
|
|
case _trust_logical_pred:
|
|
ipc = NEXTOP(ipc,l);
|
|
case _stale_lu_index:
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
LOCK(ap->PELock);
|
|
if (!same_lu_block(jlbl, ipc)) {
|
|
ipc = *jlbl;
|
|
UNLOCK(ap->PELock);
|
|
break;
|
|
}
|
|
#endif
|
|
while (TRUE) {
|
|
yamop *nipc = clean_up_index(ipc->u.Ill.I, jlbl, ap);
|
|
if (nipc == NULL) {
|
|
/* not enough space */
|
|
if (!Yap_growheap(FALSE, Yap_Error_Size, NULL)) {
|
|
UNLOCK(ap->PELock);
|
|
Yap_Error(OUT_OF_HEAP_ERROR, TermNil, Yap_ErrorMessage);
|
|
return NULL;
|
|
}
|
|
} else {
|
|
UNLOCK(ap->PELock);
|
|
ipc = nipc;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case _enter_lu_pred:
|
|
ipc = ipc->u.Ill.l1;
|
|
break;
|
|
case _lock_lu:
|
|
ipc = NEXTOP(ipc,p);
|
|
break;
|
|
case _jump:
|
|
jlbl = &(ipc->u.l.l);
|
|
ipc = ipc->u.l.l;
|
|
break;
|
|
case _jump_if_var:
|
|
jlbl = &(ipc->u.l.l);
|
|
ipc = ipc->u.l.l;
|
|
break;
|
|
case _jump_if_nonvar:
|
|
ipc = NEXTOP(ipc,xll);
|
|
break;
|
|
/* instructions type e */
|
|
case _switch_on_type:
|
|
jlbl = &(ipc->u.llll.l4);
|
|
ipc = ipc->u.llll.l4;
|
|
break;
|
|
case _switch_list_nl:
|
|
jlbl = &(ipc->u.ollll.l4);
|
|
ipc = ipc->u.ollll.l4;
|
|
break;
|
|
case _switch_on_arg_type:
|
|
jlbl = &(ipc->u.xllll.l4);
|
|
ipc = ipc->u.xllll.l4;
|
|
break;
|
|
case _switch_on_sub_arg_type:
|
|
jlbl = &(ipc->u.sllll.l4);
|
|
ipc = ipc->u.sllll.l4;
|
|
break;
|
|
case _if_not_then:
|
|
jlbl = &(ipc->u.clll.l3);
|
|
ipc = ipc->u.clll.l3;
|
|
break;
|
|
case _expand_index:
|
|
case _expand_clauses:
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
LOCK(ap->PELock);
|
|
if (*jlbl != (yamop *)&(ap->cs.p_code.ExpandCode)) {
|
|
ipc = *jlbl;
|
|
UNLOCK(ap->PELock);
|
|
break;
|
|
}
|
|
#endif
|
|
ipc = ExpandIndex(ap, 0);
|
|
UNLOCK(ap->PELock);
|
|
break;
|
|
case _op_fail:
|
|
ipc = alt;
|
|
break;
|
|
case _index_pred:
|
|
case _spy_pred:
|
|
Yap_IPred(ap, 0);
|
|
ipc = ap->cs.p_code.TrueCodeOfPred;
|
|
break;
|
|
case _undef_p:
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
static yamop **
|
|
find_caller(PredEntry *ap, yamop *code, struct intermediates *cint) {
|
|
/* first clause */
|
|
yamop *alt = NULL;
|
|
istack_entry *stack, *sp;
|
|
/* last clause to experiment with */
|
|
yamop *ipc = ap->cs.p_code.TrueCodeOfPred;
|
|
/* labp should point at the beginning of the sequence */
|
|
yamop **labp = NULL;
|
|
Term t = TermNil, *s_reg = NULL;
|
|
int is_last_arg = TRUE;
|
|
int argno = 1;
|
|
/* this is will be used as a new PC */
|
|
CELL *top = (CELL *) TR;
|
|
UInt arity = 0;
|
|
sp = stack = (istack_entry *)top;
|
|
|
|
labelno = 1;
|
|
stack[0].pos = 0;
|
|
|
|
/* try to refine the interval using the indexing code */
|
|
while (ipc != NULL) {
|
|
op_numbers op;
|
|
|
|
op = Yap_op_from_opcode(ipc->opc);
|
|
switch(op) {
|
|
case _try_me:
|
|
case _retry_me:
|
|
case _trust_me:
|
|
case _profiled_trust_me:
|
|
case _count_trust_me:
|
|
alt = ipc->u.ld.d;
|
|
ipc = NEXTOP(ipc,ld);
|
|
break;
|
|
case _jump:
|
|
ipc = ipc->u.l.l;
|
|
break;
|
|
case _jump_if_var:
|
|
if (IsVarTerm(Deref(ARG1))) {
|
|
ipc = ipc->u.l.l;
|
|
} else {
|
|
ipc = NEXTOP(ipc,l);
|
|
}
|
|
break;
|
|
case _jump_if_nonvar:
|
|
if (!IsVarTerm(XREGS[arg_from_x(ipc->u.xll.x)])) {
|
|
ipc = ipc->u.xll.l1;
|
|
} else {
|
|
ipc = NEXTOP(ipc,xll);
|
|
}
|
|
break;
|
|
/* instructions type EC */
|
|
/* instructions type e */
|
|
case _index_dbref:
|
|
t = AbsAppl(s_reg-1);
|
|
sp[-1].val = t;
|
|
s_reg = NULL;
|
|
ipc = NEXTOP(ipc,e);
|
|
break;
|
|
case _index_blob:
|
|
t = MkIntTerm(s_reg[0]);
|
|
sp[-1].val = t;
|
|
s_reg = NULL;
|
|
ipc = NEXTOP(ipc,e);
|
|
break;
|
|
/* instructions type e */
|
|
case _switch_on_type:
|
|
t = Deref(ARG1);
|
|
argno = 1;
|
|
sp = reset_stack(stack);
|
|
if (IsVarTerm(t)) {
|
|
if (ipc->u.llll.l4 == code) return &(ipc->u.llll.l4);
|
|
ipc = ipc->u.llll.l4;
|
|
} else if (IsPairTerm(t)) {
|
|
sp = push_stack(sp, 1, AbsPair(NULL), TermNil, cint);
|
|
s_reg = RepPair(t);
|
|
labp = &(ipc->u.llll.l1);
|
|
if (ipc->u.llll.l1 == code) return &(ipc->u.llll.l1);
|
|
ipc = ipc->u.llll.l1;
|
|
} else if (IsApplTerm(t)) {
|
|
sp = push_stack(sp, 1, AbsAppl((CELL *)FunctorOfTerm(t)), TermNil, cint);
|
|
ipc = ipc->u.llll.l3;
|
|
} else {
|
|
sp = push_stack(sp, 1, t, TermNil, cint);
|
|
ipc = ipc->u.llll.l2;
|
|
}
|
|
break;
|
|
case _switch_list_nl:
|
|
t = Deref(ARG1);
|
|
sp = reset_stack(stack);
|
|
argno = 1;
|
|
if (IsVarTerm(t)) {
|
|
if (ipc->u.ollll.l4 == code) return &(ipc->u.ollll.l4);
|
|
ipc = ipc->u.ollll.l4;
|
|
} else if (IsPairTerm(t)) {
|
|
s_reg = RepPair(t);
|
|
sp = push_stack(sp, 1, AbsPair(NULL), TermNil, cint);
|
|
if (ipc->u.ollll.l1 == code)
|
|
return &(ipc->u.ollll.l1);
|
|
ipc = ipc->u.ollll.l1;
|
|
} else if (t == TermNil) {
|
|
sp = push_stack(sp, 1, t, TermNil, cint);
|
|
ipc = ipc->u.ollll.l2;
|
|
} else {
|
|
if (IsApplTerm(t)) {
|
|
sp = push_stack(sp, 1, t, AbsAppl((CELL *)FunctorOfTerm(t)), cint);
|
|
} else {
|
|
sp = push_stack(sp, 1, t, TermNil, cint);
|
|
}
|
|
ipc = ipc->u.ollll.l3;
|
|
}
|
|
break;
|
|
case _switch_on_arg_type:
|
|
argno = arg_from_x(ipc->u.xllll.x);
|
|
t = Deref(XREGS[argno]);
|
|
if (IsVarTerm(t)) {
|
|
if (ipc->u.xllll.l4 == code) return &(ipc->u.xllll.l4);
|
|
ipc = ipc->u.xllll.l4;
|
|
} else if (IsPairTerm(t)) {
|
|
s_reg = RepPair(t);
|
|
sp = push_stack(sp, argno, AbsPair(NULL), TermNil, cint);
|
|
if (ipc->u.xllll.l1 == code) return &(ipc->u.xllll.l1);
|
|
ipc = ipc->u.xllll.l1;
|
|
} else if (IsApplTerm(t)) {
|
|
sp = push_stack(sp, argno, AbsAppl((CELL *)FunctorOfTerm(t)), TermNil, cint);
|
|
ipc = ipc->u.xllll.l3;
|
|
} else {
|
|
sp = push_stack(sp, argno, t, TermNil, cint);
|
|
ipc = ipc->u.xllll.l2;
|
|
}
|
|
break;
|
|
case _switch_on_sub_arg_type:
|
|
{
|
|
COUNT argno = ipc->u.sllll.s;
|
|
|
|
t = Deref(s_reg[ipc->u.sllll.s]);
|
|
if (argno != arity-1) is_last_arg = FALSE;
|
|
t = Deref(s_reg[argno]);
|
|
if (IsVarTerm(t)) {
|
|
if (ipc->u.sllll.l4 == code) return &(ipc->u.sllll.l4);
|
|
ipc = ipc->u.sllll.l4;
|
|
} else if (IsPairTerm(t)) {
|
|
s_reg = RepPair(t);
|
|
sp = push_stack(sp, -argno-1, AbsPair(NULL), TermNil, cint);
|
|
if (ipc->u.sllll.l1 == code) return &(ipc->u.sllll.l1);
|
|
ipc = ipc->u.sllll.l1;
|
|
} else if (IsApplTerm(t)) {
|
|
sp = push_stack(sp, -argno-1, AbsAppl((CELL *)FunctorOfTerm(t)), TermNil, cint);
|
|
ipc = ipc->u.sllll.l3;
|
|
} else {
|
|
sp = push_stack(sp, -argno-1, t, TermNil, cint);
|
|
ipc = ipc->u.sllll.l2;
|
|
}
|
|
}
|
|
break;
|
|
case _if_not_then:
|
|
ipc = NULL;
|
|
break;
|
|
/* instructions type ollll */
|
|
case _switch_on_func:
|
|
case _if_func:
|
|
case _go_on_func:
|
|
{
|
|
FuncSwiEntry *fe;
|
|
yamop *newpc;
|
|
Functor f;
|
|
|
|
s_reg = RepAppl(t);
|
|
f = (Functor)(*s_reg++);
|
|
if (op == _switch_on_func) {
|
|
fe = lookup_f_hash(f,ipc->u.sssl.l,ipc->u.sssl.s);
|
|
} else {
|
|
fe = lookup_f(f,ipc->u.sssl.l,ipc->u.sssl.s);
|
|
}
|
|
newpc = (yamop *)(fe->Label);
|
|
|
|
if (newpc == code) {
|
|
/* we found it */
|
|
return (yamop **)(&(fe->Label));
|
|
} else if (newpc == FAILCODE) {
|
|
ipc = alt;
|
|
} else {
|
|
ipc = newpc;
|
|
}
|
|
}
|
|
break;
|
|
case _switch_on_cons:
|
|
case _if_cons:
|
|
case _go_on_cons:
|
|
{
|
|
AtomSwiEntry *ae;
|
|
yamop *newpc;
|
|
|
|
if (op == _switch_on_cons) {
|
|
ae = lookup_c_hash(t,ipc->u.sssl.l,ipc->u.sssl.s);
|
|
} else {
|
|
ae = lookup_c(t,ipc->u.sssl.l,ipc->u.sssl.s);
|
|
}
|
|
|
|
newpc = (yamop *)(ae->Label);
|
|
if (newpc == code) {
|
|
/* we found it */
|
|
return (yamop **)(&(ae->Label));
|
|
ipc = NULL;
|
|
} else if (newpc == FAILCODE) {
|
|
/* oops, things went wrong */
|
|
ipc = alt;
|
|
} else {
|
|
ipc = newpc;
|
|
}
|
|
}
|
|
break;
|
|
case _expand_index:
|
|
case _expand_clauses:
|
|
ipc = alt;
|
|
alt = NULL;
|
|
break;
|
|
case _op_fail:
|
|
if (alt == NULL) {
|
|
return NULL;
|
|
} else {
|
|
ipc = alt;
|
|
alt = NULL;
|
|
}
|
|
break;
|
|
case _lock_lu:
|
|
ipc = NEXTOP(ipc,p);
|
|
break;
|
|
case _stale_lu_index:
|
|
/* found myself */
|
|
return NULL;
|
|
default:
|
|
if (alt == NULL) {
|
|
Yap_Error(INTERNAL_COMPILER_ERROR,t,"unexpected instruction %d in find_caller", op);
|
|
return NULL;
|
|
} else {
|
|
ipc = alt;
|
|
}
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
yamop *
|
|
Yap_CleanUpIndex(LogUpdIndex *blk)
|
|
{
|
|
PredEntry *ap;
|
|
LogUpdIndex *pblk = blk;
|
|
|
|
/* first, go up until findin'your pred */
|
|
ap = pblk->ClPred;
|
|
|
|
if (
|
|
#if defined(THREADS) || defined(YAPOR)
|
|
blk->ClRefCount
|
|
#else
|
|
blk->ClFlags & InUseMask
|
|
#endif
|
|
) {
|
|
/* I have to kill this block */
|
|
yamop **caller, *new;
|
|
struct intermediates cintb;
|
|
|
|
caller = find_caller(ap, blk->ClCode, &cintb);
|
|
while (TRUE) {
|
|
new = replace_lu_block(blk, REFRESH, ap, NULL, FALSE);
|
|
/* will be null, if we are in the middle of the current block */
|
|
if (new == NULL) {
|
|
if (!Yap_growheap(FALSE, Yap_Error_Size, NULL)) {
|
|
Yap_Error(OUT_OF_HEAP_ERROR, TermNil, Yap_ErrorMessage);
|
|
return FAILCODE;
|
|
}
|
|
}
|
|
if (caller) {
|
|
*caller = new;
|
|
}
|
|
return new;
|
|
}
|
|
} else {
|
|
/* just compact the code */
|
|
yamop *start = blk->ClCode, *codep;
|
|
op_numbers op = Yap_op_from_opcode(start->opc);
|
|
|
|
while (op == _jump_if_nonvar) {
|
|
start = NEXTOP(start, xll);
|
|
op = Yap_op_from_opcode(start->opc);
|
|
}
|
|
codep = start->u.Ill.l1;
|
|
start->opc = Yap_opcode(_enter_lu_pred);
|
|
start->u.Ill.l2 = cp_lu_trychain(codep, codep, start, REFRESH, ap, NULL, FALSE, blk, start->u.Ill.s, 0);
|
|
return start;
|
|
}
|
|
}
|
|
|