[llvm-commits] [llvm] r91886 - /llvm/trunk/include/llvm/Support/StandardPasses.h

[Chris Lattner]

Author: lattner
Date: Mon Dec 21 22:47:41 2009
New Revision: 91886

URL: http://llvm.org/viewvc/llvm-project?rev=91886&view=rev
Log:
don't run GVN at -O1, GCC doesn't do it's equivalent at that optimization level.

Modified:
    llvm/trunk/include/llvm/Support/StandardPasses.h

Modified: llvm/trunk/include/llvm/Support/StandardPasses.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Support/StandardPasses.h?rev=91886&r1=91885&r2=91886&view=diff

==============================================================================
--- llvm/trunk/include/llvm/Support/StandardPasses.h (original)
+++ llvm/trunk/include/llvm/Support/StandardPasses.h Mon Dec 21 22:47:41 2009
@@ -137,7 +137,8 @@
     if (UnrollLoops)
       PM->add(createLoopUnrollPass());          // Unroll small loops
     PM->add(createInstructionCombiningPass());  // Clean up after the unroller
-    PM->add(createGVNPass());                   // Remove redundancies
+    if (OptimizationLevel > 1)
+      PM->add(createGVNPass());                 // Remove redundancies
     PM->add(createMemCpyOptPass());             // Remove memcpy / form memset
     PM->add(createSCCPPass());                  // Constant prop with SCCP