[llvm-commits] [llvm-gcc-4.2] r51185 - /llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp

[Evan Cheng]

Author: evancheng
Date: Fri May 16 02:58:08 2008
New Revision: 51185

URL: http://llvm.org/viewvc/llvm-project?rev=51185&view=rev
Log:
Re-enable tail duplication pass (now with default threshold down to 1 instruction).

Modified:
    llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp

Modified: llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp?rev=51185&r1=51184&r2=51185&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp (original)
+++ llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp Fri May 16 02:58:08 2008
@@ -360,7 +360,8 @@
       if (optimize > 2)
         PM->add(createArgumentPromotionPass()); // Scalarize uninlined fn args
     }
-    
+
+    PM->add(createTailDuplicationPass());       // Simplify cfg by copying code    
     if (!lang_hooks.flag_no_builtin())
       PM->add(createSimplifyLibCallsPass());    // Library Call Optimizations
     PM->add(createInstructionCombiningPass());  // Cleanup for scalarrepl.