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Following r84485, add Defs = [EFLAGS] to the 32-bit lock instructions too.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84652 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-10-20 18:14:49 +00:00
parent 1e86132122
commit bab42bdd87
1 changed files with 2 additions and 0 deletions
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2
lib/Target/X86/X86InstrInfo.td
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@ -3593,6 +3593,7 @@ def LXADD8 : I<0xC0, MRMSrcMem, (outs GR8:$dst), (ins i8mem:$ptr, GR8:$val),
// Optimized codegen when the non-memory output is not used.
// FIXME: Use normal add / sub instructions and add lock prefix dynamically.
let Defs = [EFLAGS] in {
def LOCK_ADD8mr : I<0x00, MRMDestMem, (outs), (ins i8mem:$dst, GR8:$src2),
"lock\n\t"
"add{b}\t{$src2, $dst|$dst, $src2}", []>, LOCK;
@ -3662,6 +3663,7 @@ def LOCK_DEC16m : I<0xFF, MRM1m, (outs), (ins i16mem:$dst),
def LOCK_DEC32m : I<0xFF, MRM1m, (outs), (ins i32mem:$dst),
"lock\n\t"
"dec{l}\t$dst", []>, LOCK;
}
// Atomic exchange, and, or, xor
let Constraints = "$val = $dst", Defs = [EFLAGS],