Make the SLP store-merger less paranoid about function calls. We check for function calls when we check if it is safe to sink instructions.

llvm-svn: 179207

1 files changed, 0 insertions, 4 deletions

diff --git a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
index 01b2b92870e..21bdec83f05 100644
--- a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
+++ b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
@@ -65,10 +65,6 @@ struct SLPVectorizer : public BasicBlockPass {
   /// if we flush the chain creation every time we run into a memory barrier.
   bool CollectStores(BasicBlock *BB, BoUpSLP &R) {
     for (BasicBlock::iterator it = BB->begin(), e = BB->end(); it != e; ++it) {
-      // Can't vectorize instructions with side effects.
-      if (it->mayThrow())
-        return false;
-
       StoreInst *SI = dyn_cast<StoreInst>(it);
       if (!SI)
         continue;