diff options
Diffstat (limited to 'lib/Target/X86')
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.td | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td index 9d474d3..16b2af7 100644 --- a/lib/Target/X86/X86InstrInfo.td +++ b/lib/Target/X86/X86InstrInfo.td @@ -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], |