SLPVectorizer: Use vector type for vectorized memory operations

No test case, because with the current cost model we don't see a difference.
An upcoming ARM memory cost model change will expose and test this bug.

radar://15332579

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193572 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Vectorize/SLPVectorizer.cpp b/lib/Transforms/Vectorize/SLPVectorizer.cpp
index 4d82bc428db34f008c3f643f74ffbf11ed4d3b2d..012521ad0142c9259a32954ab011aacdd5e7d1cd 100644 (file)
--- a/lib/Transforms/Vectorize/SLPVectorizer.cpp
+++ b/lib/Transforms/Vectorize/SLPVectorizer.cpp
@@ -1023,14 +1023,14 @@ int BoUpSLP::getEntryCost(TreeEntry *E) {
       // Cost of wide load - cost of scalar loads.
       int ScalarLdCost = VecTy->getNumElements() *
       TTI->getMemoryOpCost(Instruction::Load, ScalarTy, 1, 0);
-      int VecLdCost = TTI->getMemoryOpCost(Instruction::Load, ScalarTy, 1, 0);
+      int VecLdCost = TTI->getMemoryOpCost(Instruction::Load, VecTy, 1, 0);
       return VecLdCost - ScalarLdCost;
     }
     case Instruction::Store: {
       // We know that we can merge the stores. Calculate the cost.
       int ScalarStCost = VecTy->getNumElements() *
       TTI->getMemoryOpCost(Instruction::Store, ScalarTy, 1, 0);
-      int VecStCost = TTI->getMemoryOpCost(Instruction::Store, ScalarTy, 1, 0);
+      int VecStCost = TTI->getMemoryOpCost(Instruction::Store, VecTy, 1, 0);
       return VecStCost - ScalarStCost;
     }
     default: