From 61070beae0596ce066b8826e605443ca44fd9bdd Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Thu, 17 Apr 2014 06:33:45 +0000
Subject: [PATCH] [X86] Add disassembler support for the 0x0f 0x7f form of movq
 %mm, %mm.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206447 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86InstrMMX.td       | 5 +++++
 test/MC/Disassembler/X86/x86-32.txt | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/lib/Target/X86/X86InstrMMX.td b/lib/Target/X86/X86InstrMMX.td
index 050ee395ba1..16e5a808132 100644
--- a/lib/Target/X86/X86InstrMMX.td
+++ b/lib/Target/X86/X86InstrMMX.td
@@ -254,6 +254,11 @@ let neverHasSideEffects = 1 in
 def MMX_MOVQ64rr : MMXI<0x6F, MRMSrcReg, (outs VR64:$dst), (ins VR64:$src),
                         "movq\t{$src, $dst|$dst, $src}", [],
                         IIC_MMX_MOVQ_RR>;
+let isCodeGenOnly = 1, ForceDisassemble = 1, hasSideEffects = 0 in {
+def MMX_MOVQ64rr_REV : MMXI<0x7F, MRMDestReg, (outs VR64:$dst), (ins VR64:$src),
+                        "movq\t{$src, $dst|$dst, $src}", [],
+                        IIC_MMX_MOVQ_RR>;
+}
 } // SchedRW
 
 let SchedRW = [WriteLoad] in {
diff --git a/test/MC/Disassembler/X86/x86-32.txt b/test/MC/Disassembler/X86/x86-32.txt
index a4a0b2cf9f0..c9c508680c5 100644
--- a/test/MC/Disassembler/X86/x86-32.txt
+++ b/test/MC/Disassembler/X86/x86-32.txt
@@ -708,3 +708,6 @@
 
 # CHECK: movl $4294967295, %eax
 0xc7 0xc0 0xff 0xff 0xff 0xff
+
+# CHECK: movq %mm0, %mm1
+0x0f 0x7f 0xc1