diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86InstrInfo.td')
| -rw-r--r-- | llvm/lib/Target/X86/X86InstrInfo.td | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/llvm/lib/Target/X86/X86InstrInfo.td b/llvm/lib/Target/X86/X86InstrInfo.td index 077b4563b06..4fd3320090b 100644 --- a/llvm/lib/Target/X86/X86InstrInfo.td +++ b/llvm/lib/Target/X86/X86InstrInfo.td @@ -783,10 +783,15 @@ def MOV32mr : I<0x89, MRMDestMem, (outs), (ins i32mem:$dst, GR32:$src), "mov{l}\t{$src, $dst|$dst, $src}", [(store GR32:$src, addr:$dst)]>; -// A version of MOV8mr that uses i8mem_NOREX so that it can be used for -// storing h registers, which can't be encoded when a REX prefix is present. -def MOV8mr_NOREX : I<0x88, MRMDestMem, (outs), (ins i8mem_NOREX:$dst, GR8:$src), - "mov{b}\t{$src, $dst|$dst, $src} # NOREX", []>; +// Versions of MOV8rr and MOV8mr that use i8mem_NOREX and GR8_NOREX so that they +// can be used for copying and storing h registers, which can't be encoded when +// a REX prefix is present. +let neverHasSideEffects = 1 in +def MOV8rr_NOREX : I<0x88, MRMDestReg, (outs GR8_NOREX:$dst), (ins GR8_NOREX:$src), + "mov{b}\t{$src, $dst|$dst, $src} # NOREX", []>; +def MOV8mr_NOREX : I<0x88, MRMDestMem, + (outs), (ins i8mem_NOREX:$dst, GR8_NOREX:$src), + "mov{b}\t{$src, $dst|$dst, $src} # NOREX", []>; //===----------------------------------------------------------------------===// // Fixed-Register Multiplication and Division Instructions... |
