[llvm-commits] [llvm-gcc-4.2] r49456 - /llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp

[Evan Cheng]

Author: evancheng
Date: Wed Apr  9 20:32:40 2008
New Revision: 49456

URL: http://llvm.org/viewvc/llvm-project?rev=49456&view=rev
Log:
Move memcpy / memset optimization pass after GVN.

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=49456&r1=49455&r2=49456&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp (original)
+++ llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp Wed Apr  9 20:32:40 2008
@@ -384,8 +384,8 @@
     if (flag_unroll_loops)
       PM->add(createLoopUnrollPass());          // Unroll small loops
     PM->add(createInstructionCombiningPass());  // Clean up after the unroller
-    PM->add(createMemCpyOptPass());             // Remove dead memcpy's
     PM->add(createGVNPass());                   // Remove redundancies
+    PM->add(createMemCpyOptPass());             // Remove memcpy / form memset
     PM->add(createSCCPPass());                  // Constant prop with SCCP
     
     // Run instcombine after redundancy elimination to exploit opportunities