R600/SI: Fix SIFixSGPRCopies for copies to physical registers

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223208 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/R600/SIFixSGPRCopies.cpp b/lib/Target/R600/SIFixSGPRCopies.cpp
index 82969f682b5f710ccc0c069aa08ee46fe1d25312..c7e008a8e5a9e41f8e55a3a449987cc6f8b77dfc 100644 (file)
--- a/lib/Target/R600/SIFixSGPRCopies.cpp
+++ b/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) ||