From 3e7edda4aab617e7c801e5e2edfda8a6bdb19794 Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Sat, 7 Feb 2015 23:36:51 +0000
Subject: [PATCH] [X86] Add register use/def for wrmsr and rdmsr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228515 91177308-0d34-0410-b5e6-96231b3b80d8
---
lib/Target/X86/X86InstrSystem.td | 2 ++
1 file changed, 2 insertions(+)
diff --git a/lib/Target/X86/X86InstrSystem.td b/lib/Target/X86/X86InstrSystem.td
index c2b593ac70b..0350566f8b9 100644
--- a/lib/Target/X86/X86InstrSystem.td
+++ b/lib/Target/X86/X86InstrSystem.td
@@ -438,7 +438,9 @@ def LLDT16m : I<0x00, MRM2m, (outs), (ins i16mem:$src),
//===----------------------------------------------------------------------===//
// Specialized register support
let SchedRW = [WriteSystem] in {
+let Uses = [EAX, ECX, EDX] in
def WRMSR : I<0x30, RawFrm, (outs), (ins), "wrmsr", [], IIC_WRMSR>, TB;
+let Defs = [EAX, EDX], Uses = [ECX] in
def RDMSR : I<0x32, RawFrm, (outs), (ins), "rdmsr", [], IIC_RDMSR>, TB;
let Defs = [RAX, RDX], Uses = [ECX] in