From 120a0c92f4805c3b2f0a389d836ecba61c023cd8 Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault@amd.com>
Date: Wed, 3 Dec 2014 05:22:39 +0000
Subject: [PATCH] R600/SI: Fix SIFixSGPRCopies for copies to physical registers

This shows up when operands required to be passed in VCC are copied
to.

llvm-svn: 223208
---
 llvm/lib/Target/R600/SIFixSGPRCopies.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/Target/R600/SIFixSGPRCopies.cpp b/llvm/lib/Target/R600/SIFixSGPRCopies.cpp
index 82969f682b5f..c7e008a8e5a9 100644
--- a/llvm/lib/Target/R600/SIFixSGPRCopies.cpp
+++ b/llvm/lib/Target/R600/SIFixSGPRCopies.cpp
@@ -182,7 +182,12 @@ bool SIFixSGPRCopies::isVGPRToSGPRCopy(const MachineInstr &Copy,
   unsigned DstReg = Copy.getOperand(0).getReg();
   unsigned SrcReg = Copy.getOperand(1).getReg();
   unsigned SrcSubReg = Copy.getOperand(1).getSubReg();
-  const TargetRegisterClass *DstRC = MRI.getRegClass(DstReg);
+
+  const TargetRegisterClass *DstRC
+    = TargetRegisterInfo::isVirtualRegister(DstReg) ?
+    MRI.getRegClass(DstReg) :
+    TRI->getRegClass(DstReg);
+
   const TargetRegisterClass *SrcRC;
 
   if (!TargetRegisterInfo::isVirtualRegister(SrcReg) ||