Fix type of shuffle obtained from reordering with binary operation

In transformation:
    BinOp(shuffle(v1,undef), shuffle(v2,undef)) -> shuffle(BinOp(v1, v2),undef)
type of the undef argument must be same as type of BinOp.

llvm-svn: 208531

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
index 90ca8863e8c..8c0a249aee1 100644
--- a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
@@ -1125,7 +1125,7 @@ Value *InstCombiner::SimplifyVectorOp(BinaryOperator &Inst) {
       BinaryOperator *NewBO = CreateBinOpAsGiven(Inst, LShuf->getOperand(0),
           RShuf->getOperand(0), Builder);
       Value *Res = Builder->CreateShuffleVector(NewBO,
-          UndefValue::get(Inst.getType()), LShuf->getMask());
+          UndefValue::get(NewBO->getType()), LShuf->getMask());
       return Res;
     }
   }