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CopyToReg source operand can be a register as well. e.g. Copy from GlobalBaseReg.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32929 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-01-05 20:59:06 +00:00
parent ddbc606e94
commit 489a87ca09
1 changed files with 6 additions and 2 deletions
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6
lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
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@ -457,7 +457,11 @@ void ScheduleDAG::EmitNode(SDNode *Node,
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,