[llvm-commits] [llvm-gcc-4.2] r50026 - /llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp

[Chris Lattner]

Author: lattner
Date: Sun Apr 20 23:22:46 2008
New Revision: 50026

URL: http://llvm.org/viewvc/llvm-project?rev=50026&view=rev
Log:
Enable the jump threading pass, it causes no miscompilations in my testing
and significantly helps in some cases.

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=50026&r1=50025&r2=50026&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp (original)
+++ llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp Sun Apr 20 23:22:46 2008
@@ -368,6 +368,7 @@
     
     PM->add(createTailDuplicationPass());       // Simplify cfg by copying code
     PM->add(createInstructionCombiningPass());  // Cleanup for scalarrepl.
+    PM->add(createJumpThreadingPass());         // Thread jumps.
     PM->add(createCFGSimplificationPass());     // Merge & remove BBs
     PM->add(createScalarReplAggregatesPass());  // Break up aggregate allocas
     PM->add(createInstructionCombiningPass());  // Combine silly seq's