From: Chris Lattner Date: Tue, 22 Dec 2009 04:47:41 +0000 (+0000) Subject: don't run GVN at -O1, GCC doesn't do it's equivalent at that optimization level. X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=508355c9829bd60bf2afba7068f8d74607152f87;p=oota-llvm.git don't run GVN at -O1, GCC doesn't do it's equivalent at that optimization level. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91886 91177308-0d34-0410-b5e6-96231b3b80d8 --- diff --git a/include/llvm/Support/StandardPasses.h b/include/llvm/Support/StandardPasses.h index 18be1addbf9..f233c18de3b 100644 --- a/include/llvm/Support/StandardPasses.h +++ b/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