CopyToReg source operand can be a register as well. e.g. Copy from GlobalBaseReg.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32929 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
index d544805..39285b2 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
@@ -307,7 +307,7 @@
} else if (ConstantSDNode *C =
dyn_cast<ConstantSDNode>(Op)) {
MI->addImmOperand(C->getValue());
- } else if (RegisterSDNode*R =
+ } else if (RegisterSDNode *R =
dyn_cast<RegisterSDNode>(Op)) {
MI->addRegOperand(R->getReg(), false);
} else if (GlobalAddressSDNode *TGA =
@@ -457,7 +457,11 @@
case ISD::TokenFactor:
break;
case ISD::CopyToReg: {
- unsigned InReg = getVR(Node->getOperand(2), VRBaseMap);
+ unsigned InReg;
+ if (RegisterSDNode *R = dyn_cast<RegisterSDNode>(Node->getOperand(2)))
+ InReg = R->getReg();
+ else
+ InReg = getVR(Node->getOperand(2), VRBaseMap);
unsigned DestReg = cast<RegisterSDNode>(Node->getOperand(1))->getReg();
if (InReg != DestReg) // Coalesced away the copy?
MRI->copyRegToReg(*BB, BB->end(), DestReg, InReg,