diff options
Diffstat (limited to 'llvm/lib/Transforms/IPO/PassManagerBuilder.cpp')
| -rw-r--r-- | llvm/lib/Transforms/IPO/PassManagerBuilder.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp index a1b0a4580bf..43b4ab5efa4 100644 --- a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp +++ b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp @@ -35,6 +35,11 @@ using namespace llvm; static cl::opt<bool> RunVectorization("vectorize", cl::desc("Run vectorization passes")); +static cl::opt<bool> +UseGVNAfterVectorization("use-gvn-after-vectorization", + cl::init(false), cl::Hidden, + cl::desc("Run GVN instead of Early CSE after vectorization passes")); + PassManagerBuilder::PassManagerBuilder() { OptLevel = 2; SizeLevel = 0; @@ -182,8 +187,10 @@ void PassManagerBuilder::populateModulePassManager(PassManagerBase &MPM) { if (Vectorize) { MPM.add(createBBVectorizePass()); MPM.add(createInstructionCombiningPass()); - if (OptLevel > 1) - MPM.add(createGVNPass()); // Remove redundancies + if (OptLevel > 1 && UseGVNAfterVectorization) + MPM.add(createGVNPass()); // Remove redundancies + else + MPM.add(createEarlyCSEPass()); // Catch trivial redundancies } MPM.add(createAggressiveDCEPass()); // Delete dead instructions |
