diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86InstrInfo.td | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86InstrInfo.td b/llvm/lib/Target/X86/X86InstrInfo.td index 73aa15a81d7..fbe03299e07 100644 --- a/llvm/lib/Target/X86/X86InstrInfo.td +++ b/llvm/lib/Target/X86/X86InstrInfo.td @@ -1235,12 +1235,15 @@ let isTwoAddress = 0 in { } } // Defs = [EFLAGS] +// Match xor -1 to not. Favors these over a move imm + xor to save code size. +let AddedComplexity = 15 in { def NOT8r : I<0xF6, MRM2r, (outs GR8 :$dst), (ins GR8 :$src), "not{b}\t$dst", [(set GR8:$dst, (not GR8:$src))]>; def NOT16r : I<0xF7, MRM2r, (outs GR16:$dst), (ins GR16:$src), "not{w}\t$dst", [(set GR16:$dst, (not GR16:$src))]>, OpSize; def NOT32r : I<0xF7, MRM2r, (outs GR32:$dst), (ins GR32:$src), "not{l}\t$dst", [(set GR32:$dst, (not GR32:$src))]>; +} let isTwoAddress = 0 in { def NOT8m : I<0xF6, MRM2m, (outs), (ins i8mem :$dst), "not{b}\t$dst", [(store (not (loadi8 addr:$dst)), addr:$dst)]>; |
