diff options
Diffstat (limited to 'llvm/lib/Target/X86')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 9 | ||||
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.h | 4 |
2 files changed, 10 insertions, 3 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index fdfdde3767c..f570f1991b3 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -4574,6 +4574,15 @@ bool X86TargetLowering::shouldConvertConstantLoadToIntImm(const APInt &Imm, return true; } +bool X86TargetLowering::convertSelectOfConstantsToMath(EVT VT) const { + // TODO: It might be a win to ease or lift this restriction, but the generic + // folds in DAGCombiner conflict with vector folds for an AVX512 target. + if (VT.isVector() && Subtarget.hasAVX512()) + return false; + + return true; +} + bool X86TargetLowering::isExtractSubvectorCheap(EVT ResVT, EVT SrcVT, unsigned Index) const { if (!isOperationLegalOrCustom(ISD::EXTRACT_SUBVECTOR, ResVT)) diff --git a/llvm/lib/Target/X86/X86ISelLowering.h b/llvm/lib/Target/X86/X86ISelLowering.h index 7307af100a6..53cd8ca5361 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.h +++ b/llvm/lib/Target/X86/X86ISelLowering.h @@ -1030,9 +1030,7 @@ namespace llvm { bool shouldConvertConstantLoadToIntImm(const APInt &Imm, Type *Ty) const override; - bool convertSelectOfConstantsToMath() const override { - return true; - } + bool convertSelectOfConstantsToMath(EVT VT) const override; /// Return true if EXTRACT_SUBVECTOR is cheap for this result type /// with this index. |
