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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-04-24 12:34:08 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-04-24 12:34:08 +0000 |
| commit | d30745b2a04e986606ee31ea088a9a98426246d2 (patch) | |
| tree | 9823829e263438f9175d8bff03649881ea6e2045 | |
| parent | 54d99bf0db4f5f7fdcfbb0b15cb6f0a6e011fa60 (diff) | |
| download | bcm5719-llvm-d30745b2a04e986606ee31ea088a9a98426246d2.tar.gz bcm5719-llvm-d30745b2a04e986606ee31ea088a9a98426246d2.zip | |
[X86] Add shouldFoldConstantShiftPairToMask override placeholder. NFCI.
Prep work toward fixing PR40758
llvm-svn: 359088
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 6 | ||||
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.h | 3 |
2 files changed, 9 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 04de45c8ad2..d1e0f690913 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -5011,6 +5011,12 @@ bool X86TargetLowering::hasAndNot(SDValue Y) const { return Subtarget.hasSSE2(); } +bool X86TargetLowering::shouldFoldConstantShiftPairToMask( + const SDNode *N, CombineLevel Level) const { + // TODO - some targets prefer immediate vector shifts to shift+mask. + return TargetLoweringBase::shouldFoldConstantShiftPairToMask(N, Level); +} + bool X86TargetLowering::shouldFoldMaskToVariableShiftPair(SDValue Y) const { EVT VT = Y.getValueType(); diff --git a/llvm/lib/Target/X86/X86ISelLowering.h b/llvm/lib/Target/X86/X86ISelLowering.h index 1742e743f05..ac787f807aa 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.h +++ b/llvm/lib/Target/X86/X86ISelLowering.h @@ -814,6 +814,9 @@ namespace llvm { bool hasAndNot(SDValue Y) const override; + bool shouldFoldConstantShiftPairToMask(const SDNode *N, + CombineLevel Level) const override; + bool shouldFoldMaskToVariableShiftPair(SDValue Y) const override; bool |
