diff options
Diffstat (limited to 'lib/Target/X86/X86InstrCompiler.td')
| -rw-r--r-- | lib/Target/X86/X86InstrCompiler.td | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/lib/Target/X86/X86InstrCompiler.td b/lib/Target/X86/X86InstrCompiler.td index 2801c9bb3f..829ea27920 100644 --- a/lib/Target/X86/X86InstrCompiler.td +++ b/lib/Target/X86/X86InstrCompiler.td @@ -665,12 +665,20 @@ def LOCK_DEC64m : RI<0xFF, MRM1m, (outs), (ins i64mem:$dst), // Atomic compare and swap. let Defs = [EAX, EDX, EFLAGS], Uses = [EAX, EBX, ECX, EDX], - isCodeGenOnly = 1 in { + isCodeGenOnly = 1 in def LCMPXCHG8B : I<0xC7, MRM1m, (outs), (ins i64mem:$ptr), "lock\n\t" "cmpxchg8b\t$ptr", [(X86cas8 addr:$ptr)]>, TB, LOCK; -} + +let Defs = [RAX, RDX, EFLAGS], Uses = [RAX, RBX, RCX, RDX], + isCodeGenOnly = 1 in +def LCMPXCHG16B : RI<0xC7, MRM1m, (outs), (ins i128mem:$ptr), + "lock\n\t" + "cmpxchg16b\t$ptr", + [(X86cas16 addr:$ptr)]>, TB, LOCK, + Requires<[HasCmpxchg16b]>; + let Defs = [AL, EFLAGS], Uses = [AL], isCodeGenOnly = 1 in { def LCMPXCHG8 : I<0xB0, MRMDestMem, (outs), (ins i8mem:$ptr, GR8:$swap), "lock\n\t" |