diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 707fa5e6c6e..bfa4145d50e 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -1869,7 +1869,7 @@ X86TargetLowering::getOptimalMemOpType(uint64_t Size, if ((!IsMemset || ZeroMemset) && !F->hasFnAttribute(Attribute::NoImplicitFloat)) { if (Size >= 16 && - (!Subtarget->isUnalignedMemUnder32Slow() || + (!Subtarget->isUnalignedMem16Slow() || ((DstAlign == 0 || DstAlign >= 16) && (SrcAlign == 0 || SrcAlign >= 16)))) { if (Size >= 32) { @@ -1916,7 +1916,9 @@ X86TargetLowering::allowsMisalignedMemoryAccesses(EVT VT, if (VT.getSizeInBits() == 256) *Fast = !Subtarget->isUnalignedMem32Slow(); else - *Fast = !Subtarget->isUnalignedMemUnder32Slow(); + // FIXME: We should always return that 8-byte and under accesses are fast. + // That is what other x86 lowering code assumes. + *Fast = !Subtarget->isUnalignedMem16Slow(); } return true; } |
