From 2d29ee06cd597e1f53005855721fe80d49655ddc Mon Sep 17 00:00:00 2001
From: Anton Korobeynikov <asl@math.spbu.ru>
Date: Tue, 22 Jul 2008 16:22:48 +0000
Subject: [PATCH] Fix encoding of atomic compare and swap for i64

llvm-svn: 53911
---
 llvm/lib/Target/X86/X86InstrInfo.td | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/Target/X86/X86InstrInfo.td b/llvm/lib/Target/X86/X86InstrInfo.td
index 7a4e796cadbe..4f3a3af0f97c 100644
--- a/llvm/lib/Target/X86/X86InstrInfo.td
+++ b/llvm/lib/Target/X86/X86InstrInfo.td
@@ -2594,7 +2594,7 @@ def LCMPXCHG32 : I<0xB1, MRMDestMem, (outs), (ins i32mem:$ptr, GR32:$swap),
                [(X86cas addr:$ptr, GR32:$swap, 4)]>, TB, LOCK;
 }
 let Defs = [EAX, EBX, ECX, EDX, EFLAGS], Uses = [EAX, EBX, ECX, EDX] in {
-def LCMPXCHG8B : I<0xC7, MRMDestMem, (outs), (ins i32mem:$ptr),
+def LCMPXCHG8B : I<0xC7, MRM1m, (outs), (ins i32mem:$ptr),
                "lock cmpxchg8b\t$ptr",
                [(X86cas8 addr:$ptr)]>, TB, LOCK;
 }
-- 
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