[COST]Fix PR35865: Fix cost model evaluation for shuffle on X86.
Summary:
If the vector type is transformed to non-vector single type, the compile
may crash trying to get vector information about non-vector type.
Reviewers: RKSimon, spatel, mkuper, hfinkel
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D41862
llvm-svn: 322106
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
index 223eed3..967d67a 100644
--- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
+++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
@@ -754,7 +754,8 @@
// type remains the same.
if (Kind == TTI::SK_PermuteSingleSrc && LT.first != 1) {
MVT LegalVT = LT.second;
- if (LegalVT.getVectorElementType().getSizeInBits() ==
+ if (LegalVT.isVector() &&
+ LegalVT.getVectorElementType().getSizeInBits() ==
Tp->getVectorElementType()->getPrimitiveSizeInBits() &&
LegalVT.getVectorNumElements() < Tp->getVectorNumElements()) {