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| author | Clement Courbet <courbet@google.com> | 2017-10-30 14:19:33 +0000 |
|---|---|---|
| committer | Clement Courbet <courbet@google.com> | 2017-10-30 14:19:33 +0000 |
| commit | b2c3eb8cf18fd749eb6f71314a7f657dcbfb4b84 (patch) | |
| tree | d54c47b5bd661ab5a5fa46864fad656e58b0cc72 /llvm/lib/Target/X86/X86TargetTransformInfo.h | |
| parent | bef1c56724dbb566af0f0ce18fc30cf43ba82fda (diff) | |
| download | bcm5719-llvm-b2c3eb8cf18fd749eb6f71314a7f657dcbfb4b84.tar.gz bcm5719-llvm-b2c3eb8cf18fd749eb6f71314a7f657dcbfb4b84.zip | |
[CodeGen][ExpandMemcmp] Allow memcmp to expand to vector loads (2).
- Targets that want to support memcmp expansions now return the list of
supported load sizes.
- Expansion codegen does not assume that all power-of-two load sizes
smaller than the max load size are valid. For examples, this is not the
case for x86(32bit)+sse2.
Fixes PR34887.
llvm-svn: 316905
Diffstat (limited to 'llvm/lib/Target/X86/X86TargetTransformInfo.h')
| -rw-r--r-- | llvm/lib/Target/X86/X86TargetTransformInfo.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.h b/llvm/lib/Target/X86/X86TargetTransformInfo.h index 0d2c90dc58b..5cb5c0cc298 100644 --- a/llvm/lib/Target/X86/X86TargetTransformInfo.h +++ b/llvm/lib/Target/X86/X86TargetTransformInfo.h @@ -127,7 +127,8 @@ public: bool hasDivRemOp(Type *DataType, bool IsSigned); bool areInlineCompatible(const Function *Caller, const Function *Callee) const; - bool enableMemCmpExpansion(unsigned &MaxLoadSize); + const TTI::MemCmpExpansionOptions *enableMemCmpExpansion( + bool IsZeroCmp) const; bool enableInterleavedAccessVectorization(); private: int getGSScalarCost(unsigned Opcode, Type *DataTy, bool VariableMask, |
