[cfe-commits] r83882 - in /cfe/trunk: lib/CodeGen/CGCXX.cpp test/CodeGenCXX/devirtualize-virtual-function-calls.cpp

[Anders Carlsson]

Author: andersca
Date: Mon Oct 12 14:45:47 2009
New Revision: 83882

URL: http://llvm.org/viewvc/llvm-project?rev=83882&view=rev
Log:
Devirtualize calls on temporaries. A().f() for example.

Modified:
    cfe/trunk/lib/CodeGen/CGCXX.cpp
    cfe/trunk/test/CodeGenCXX/devirtualize-virtual-function-calls.cpp

Modified: cfe/trunk/lib/CodeGen/CGCXX.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGCXX.cpp?rev=83882&r1=83881&r2=83882&view=diff

==============================================================================
--- cfe/trunk/lib/CodeGen/CGCXX.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGCXX.cpp Mon Oct 12 14:45:47 2009
@@ -206,8 +206,14 @@
       // This is a record decl. We know the type and can devirtualize it.
       return VD->getType()->isRecordType();
     }
+    
+    return false;
   }
   
+  // We can always devirtualize calls on temporaries.
+  if (isa<CXXTemporaryObjectExpr>(Base))
+    return true;
+  
   // We can't devirtualize the call.
   return false;
 }

Modified: cfe/trunk/test/CodeGenCXX/devirtualize-virtual-function-calls.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/devirtualize-virtual-function-calls.cpp?rev=83882&r1=83881&r2=83882&view=diff

==============================================================================
--- cfe/trunk/test/CodeGenCXX/devirtualize-virtual-function-calls.cpp (original)
+++ cfe/trunk/test/CodeGenCXX/devirtualize-virtual-function-calls.cpp Mon Oct 12 14:45:47 2009
@@ -15,4 +15,7 @@
 
   // CHECK: call void %  
   ar.f();
+  
+  // CHECK: call void @_ZN1A1fEv
+  A().f();
 }