diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index 1492979e8e..a090938baa 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -446,6 +446,50 @@ class PhpDumper extends Dumper
         return true;
     }
 
+    /**
+     * Checks if the definition is a trivial instance.
+     *
+     * @param Definition $definition
+     *
+     * @return bool
+     */
+    private function isTrivialInstance(Definition $definition)
+    {
+        if ($definition->isPublic() || $definition->getMethodCalls() || $definition->getProperties() || $definition->getConfigurator()) {
+            return false;
+        }
+        if ($definition->isDeprecated() || $definition->isLazy() || $definition->getFactory() || 3 < count($definition->getArguments())) {
+            return false;
+        }
+
+        foreach ($definition->getArguments() as $arg) {
+            if (!$arg || ($arg instanceof Reference && 'service_container' !== (string) $arg)) {
+                continue;
+            }
+            if (is_array($arg) && 3 >= count($arg)) {
+                foreach ($arg as $k => $v) {
+                    if ($this->dumpValue($k) !== $this->dumpValue($k, false)) {
+                        return false;
+                    }
+                    if (!$v || ($v instanceof Reference && 'service_container' !== (string) $v)) {
+                        continue;
+                    }
+                    if (!is_scalar($v) || $this->dumpValue($v) !== $this->dumpValue($v, false)) {
+                        return false;
+                    }
+                }
+            } elseif (!is_scalar($arg) || $this->dumpValue($arg) !== $this->dumpValue($arg, false)) {
+                return false;
+            }
+        }
+
+        if (false !== strpos($this->dumpLiteralClass($this->dumpValue($definition->getClass())), '$')) {
+            return false;
+        }
+
+        return true;
+    }
+
     /**
      * Adds method calls to a service definition.
      *
@@ -675,7 +719,7 @@ EOF;
         foreach ($definitions as $id => $definition) {
             if ($definition->isPublic()) {
                 $publicServices .= $this->addService($id, $definition);
-            } else {
+            } elseif (!$this->isTrivialInstance($definition)) {
                 $privateServices .= $this->addService($id, $definition);
             }
         }
@@ -1504,10 +1548,18 @@ EOF;
         }
 
         if ($this->container->hasDefinition($id)) {
-            $code = sprintf('$this->%s()', $this->generateMethodName($id));
+            $definition = $this->container->getDefinition($id);
 
-            if ($this->container->getDefinition($id)->isShared()) {
-                $code = sprintf('($this->%s[\'%s\'] ?? %s)', $this->container->getDefinition($id)->isPublic() ? 'services' : 'privates', $id, $code);
+            if ($definition->isPublic() || !$this->isTrivialInstance($definition)) {
+                $code = sprintf('$this->%s()', $this->generateMethodName($id));
+            } else {
+                $code = substr($this->addNewInstance($definition, '', '', $id), 8, -2);
+                if ($definition->isShared()) {
+                    $code = sprintf('($this->privates[\'%s\'] = %s)', $id, $code);
+                }
+            }
+            if ($definition->isShared()) {
+                $code = sprintf('($this->%s[\'%s\'] ?? %s)', $definition->isPublic() ? 'services' : 'privates', $id, $code);
             }
         } elseif (null !== $reference && ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE !== $reference->getInvalidBehavior()) {
             $code = sprintf('$this->get(\'%s\', ContainerInterface::NULL_ON_INVALID_REFERENCE)', $id);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container9.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container9.php
index 472a211537..b662cf53c1 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container9.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container9.php
@@ -125,6 +125,7 @@ $container
 $container
     ->register('factory_simple', 'SimpleFactoryClass')
     ->addArgument('foo')
+    ->setDeprecated(true)
     ->setPublic(false)
 ;
 $container
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
index ef25100d11..e59b6fed95 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
@@ -231,7 +231,7 @@ class ProjectServiceContainer extends Container
      */
     protected function getFactoryServiceSimpleService()
     {
-        return $this->services['factory_service_simple'] = (new \SimpleFactoryClass('foo'))->getInstance();
+        return $this->services['factory_service_simple'] = ($this->privates['factory_simple'] ?? $this->getFactorySimpleService())->getInstance();
     }
 
     /**
@@ -372,6 +372,20 @@ class ProjectServiceContainer extends Container
         return $this->services['service_from_static_method'] = \Bar\FooClass::getInstance();
     }
 
+    /**
+     * Gets the private 'factory_simple' shared service.
+     *
+     * @return \SimpleFactoryClass
+     *
+     * @deprecated The "factory_simple" service is deprecated. You should stop using it, as it will soon be removed.
+     */
+    private function getFactorySimpleService()
+    {
+        @trigger_error('The "factory_simple" service is deprecated. You should stop using it, as it will soon be removed.', E_USER_DEPRECATED);
+
+        return $this->privates['factory_simple'] = new \SimpleFactoryClass('foo');
+    }
+
     /**
      * {@inheritdoc}
      */
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
index cd4d4ca224..852011ac7d 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
@@ -74,7 +74,7 @@ class ProjectServiceContainer extends Container
      */
     protected function getBarServiceService()
     {
-        return $this->services['bar_service'] = new \stdClass(($this->privates['baz_service'] ?? $this->getBazServiceService()));
+        return $this->services['bar_service'] = new \stdClass(($this->privates['baz_service'] ?? ($this->privates['baz_service'] = new \stdClass())));
     }
 
     /**
@@ -87,7 +87,7 @@ class ProjectServiceContainer extends Container
         return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\ServiceLocator(array('bar' => function () {
             return ($this->services['bar_service'] ?? $this->getBarServiceService());
         }, 'baz' => function (): \stdClass {
-            return ($this->privates['baz_service'] ?? $this->getBazServiceService());
+            return ($this->privates['baz_service'] ?? ($this->privates['baz_service'] = new \stdClass()));
         }, 'nil' => function () {
             return NULL;
         }));
@@ -169,14 +169,4 @@ class ProjectServiceContainer extends Container
 
         return $instance;
     }
-
-    /**
-     * Gets the private 'baz_service' shared service.
-     *
-     * @return \stdClass
-     */
-    private function getBazServiceService()
-    {
-        return $this->privates['baz_service'] = new \stdClass();
-    }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
index 678a62130b..9a0611949b 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
@@ -68,7 +68,7 @@ class ProjectServiceContainer extends Container
      */
     protected function getBarServiceService()
     {
-        return $this->services['bar_service'] = new \stdClass(($this->privates['baz_service'] ?? $this->getBazServiceService()));
+        return $this->services['bar_service'] = new \stdClass(($this->privates['baz_service'] ?? ($this->privates['baz_service'] = new \stdClass())));
     }
 
     /**
@@ -78,16 +78,6 @@ class ProjectServiceContainer extends Container
      */
     protected function getFooServiceService()
     {
-        return $this->services['foo_service'] = new \stdClass(($this->privates['baz_service'] ?? $this->getBazServiceService()));
-    }
-
-    /**
-     * Gets the private 'baz_service' shared service.
-     *
-     * @return \stdClass
-     */
-    private function getBazServiceService()
-    {
-        return $this->privates['baz_service'] = new \stdClass();
+        return $this->services['foo_service'] = new \stdClass(($this->privates['baz_service'] ?? ($this->privates['baz_service'] = new \stdClass())));
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
index 96e8c8c52c..8e3060e130 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
@@ -67,16 +67,6 @@ class ProjectServiceContainer extends Container
      */
     protected function getPublicFooService()
     {
-        return $this->services['public_foo'] = new \stdClass(($this->privates['private_foo'] ?? $this->getPrivateFooService()));
-    }
-
-    /**
-     * Gets the private 'private_foo' shared service.
-     *
-     * @return \stdClass
-     */
-    private function getPrivateFooService()
-    {
-        return $this->privates['private_foo'] = new \stdClass();
+        return $this->services['public_foo'] = new \stdClass(($this->privates['private_foo'] ?? ($this->privates['private_foo'] = new \stdClass())));
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
index 0c8311c5ff..e29fed9d2a 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
@@ -79,23 +79,13 @@ class ProjectServiceContainer extends Container
     protected function getFooServiceService()
     {
         return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber(new \Symfony\Component\DependencyInjection\ServiceLocator(array('Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => function (): \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition {
-            return ($this->privates['autowired.Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] ?? $this->getAutowired_Symfony_Component_DependencyInjection_Tests_Fixtures_CustomDefinitionService());
+            return ($this->privates['autowired.Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] ?? ($this->privates['autowired.Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition()));
         }, 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber' => function (): \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber {
             return ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] ?? $this->getSymfony_Component_DependencyInjection_Tests_Fixtures_TestServiceSubscriberService());
         }, 'bar' => function (): \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition {
             return ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] ?? $this->getSymfony_Component_DependencyInjection_Tests_Fixtures_TestServiceSubscriberService());
         }, 'baz' => function (): \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition {
-            return ($this->privates['autowired.Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] ?? $this->getAutowired_Symfony_Component_DependencyInjection_Tests_Fixtures_CustomDefinitionService());
+            return ($this->privates['autowired.Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] ?? ($this->privates['autowired.Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition()));
         })));
     }
-
-    /**
-     * Gets the private 'autowired.Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition' shared autowired service.
-     *
-     * @return \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition
-     */
-    private function getAutowired_Symfony_Component_DependencyInjection_Tests_Fixtures_CustomDefinitionService()
-    {
-        return $this->privates['autowired.Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition();
-    }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services9.xml b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services9.xml
index 5f46821a0f..9b78f7d9ee 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services9.xml
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services9.xml
@@ -112,6 +112,7 @@
     </service>
     <service id="factory_simple" class="SimpleFactoryClass" public="false">
       <argument>foo</argument>
+      <deprecated>The "%service_id%" service is deprecated. You should stop using it, as it will soon be removed.</deprecated>
     </service>
     <service id="factory_service_simple" class="Bar">
       <factory service="factory_simple" method="getInstance"/>
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/yaml/services9.yml b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/yaml/services9.yml
index e91fbb208c..ddd4c25dd5 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/yaml/services9.yml
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/yaml/services9.yml
@@ -105,6 +105,7 @@ services:
         factory: [Bar\FooClass, getInstance]
     factory_simple:
         class: SimpleFactoryClass
+        deprecated: The "%service_id%" service is deprecated. You should stop using it, as it will soon be removed.
         public: false
         arguments: ['foo']
     factory_service_simple: