diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.h')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.h | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.h b/llvm/lib/Target/X86/X86ISelLowering.h index 9d22da1dd90..601ed2b1200 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.h +++ b/llvm/lib/Target/X86/X86ISelLowering.h @@ -495,7 +495,7 @@ namespace llvm { /// alignment can satisfy any constraint. Similarly if SrcAlign is zero it /// means there isn't a need to check it against alignment requirement, /// probably because the source does not need to be loaded. If - /// 'IsZeroVal' is true, that means it's safe to return a + /// 'ZeroOrLdSrc' is true, that means it's safe to return a /// non-scalar-integer type, e.g. empty string source, constant, or loaded /// from memory. 'MemcpyStrSrc' indicates whether the memcpy source is /// constant so it does not need to be loaded. @@ -503,15 +503,16 @@ namespace llvm { /// target-independent logic. virtual EVT getOptimalMemOpType(uint64_t Size, unsigned DstAlign, unsigned SrcAlign, - bool IsZeroVal, bool MemcpyStrSrc, + bool ZeroOrLdSrc, bool MemcpyStrSrc, MachineFunction &MF) const; - /// isLegalMemOpType - Returns true if it's legal to use load / store of the + /// isSafeMemOpType - Returns true if it's safe to use load / store of the /// specified type to expand memcpy / memset inline. This is mostly true - /// for legal types except for some special cases. For example, on X86 + /// for all types except for some special cases. For example, on X86 /// targets without SSE2 f64 load / store are done with fldl / fstpl which - /// also does type conversion. - virtual bool isLegalMemOpType(MVT VT) const; + /// also does type conversion. Note the specified type doesn't have to be + /// legal as the hook is used before type legalization. + virtual bool isSafeMemOpType(MVT VT) const; /// allowsUnalignedMemoryAccesses - Returns true if the target allows /// unaligned memory accesses. of the specified type. Returns whether it |
