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Eliminate an extra copy from R1 that Nate noticed on function calls that

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have to write arguments to the stack


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22536 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-07-28 05:23:43 +00:00
parent 4015ea8711
commit 988b1dd608
1 changed files with 2 additions and 1 deletions
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3
lib/Target/PowerPC/PPCISelPattern.cpp
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@ -1293,7 +1293,8 @@ unsigned ISel::SelectExpr(SDOperand N, bool Recording) {
MVT::ValueType DestType = N.getValueType();
if (Node->getOpcode() == ISD::CopyFromReg &&
MRegisterInfo::isVirtualRegister(cast<RegSDNode>(Node)->getReg()))
(MRegisterInfo::isVirtualRegister(cast<RegSDNode>(Node)->getReg()) ||
cast<RegSDNode>(Node)->getReg() == PPC::R1))
// Just use the specified register as our input.
return cast<RegSDNode>(Node)->getReg();