From 1d3f4aefd69a12ede86af6ee430cc01bce97c14b Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Wed, 2 Mar 2016 07:32:45 +0000
Subject: [PATCH] [X86] Remove unnecessary call to isReg from emitter's DestMem
 handling for VEX prefix. The operand is always a register. NFC

llvm-svn: 262468
---
 .../lib/Target/X86/MCTargetDesc/X86MCCodeEmitter.cpp | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/llvm/lib/Target/X86/MCTargetDesc/X86MCCodeEmitter.cpp b/llvm/lib/Target/X86/MCTargetDesc/X86MCCodeEmitter.cpp
index 30306e96426e..5387bba3e59f 100644
--- a/llvm/lib/Target/X86/MCTargetDesc/X86MCCodeEmitter.cpp
+++ b/llvm/lib/Target/X86/MCTargetDesc/X86MCCodeEmitter.cpp
@@ -739,13 +739,11 @@ void X86MCCodeEmitter::EmitVEXOpcodePrefix(uint64_t TSFlags, unsigned &CurByte,
       CurOp++;
     }
 
-    const MCOperand &MO = MI.getOperand(CurOp);
-    if (MO.isReg()) {
-      if (X86II::isX86_64ExtendedReg(MO.getReg()))
-        VEX_R = 0x0;
-      if (X86II::is32ExtendedReg(MO.getReg()))
-        EVEX_R2 = 0x0;
-    }
+    if (X86II::isX86_64ExtendedReg(MI.getOperand(CurOp).getReg()))
+      VEX_R = 0x0;
+    if (X86II::is32ExtendedReg(MI.getOperand(CurOp).getReg()))
+      EVEX_R2 = 0x0;
+    CurOp++;
     break;
   }
   case X86II::MRMSrcMem: