Generate better select code by allowing the target to use scalar select, and not sign-extend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163086 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp b/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
index c334f1f..18a7169 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
@@ -475,10 +475,9 @@
// What is the size of each element in the vector mask.
EVT BitTy = MaskTy.getScalarType();
- // Turn the mask into an all-one or all-zero word.
- Mask = DAG.getAnyExtOrTrunc(Mask, DL, BitTy);
- Mask = DAG.getNode(ISD::SIGN_EXTEND_INREG, DL, BitTy, Mask,
- DAG.getValueType(MVT::i1));
+ Mask = DAG.getNode(ISD::SELECT, DL, BitTy, Mask,
+ DAG.getConstant(APInt::getAllOnesValue(BitTy.getSizeInBits()), BitTy),
+ DAG.getConstant(3, BitTy));
// Broadcast the mask so that the entire vector is all-one or all zero.
SmallVector<SDValue, 8> Ops(NumElem, Mask);