don't run GVN at -O1, GCC doesn't do it's equivalent at that optimization level.

llvm-svn: 91886
2009-12-22 04:47:41 +00:00 · 2009-12-22 04:47:41 +00:00 · f3ef2cada7
parent 9b7d99eb76
commit f3ef2cada7
1 changed files with 2 additions and 1 deletions
--- a/llvm/include/llvm/Support/StandardPasses.h
+++ b/llvm/include/llvm/Support/StandardPasses.h
@ -137,7 +137,8 @@ namespace llvm {
    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