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Move MRI liveouts to PowerPC return instructions. 

llvm-svn: 174409
This commit is contained in:
Jakob Stoklund Olesen 2013-02-05 18:12:00 +00:00
parent 242546c99d
commit 8660a8c0fc
1 changed files with 9 additions and 21 deletions
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30
llvm/lib/Target/PowerPC/PPCISelLowering.cpp
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@ -3341,17 +3341,6 @@ PPCTargetLowering::FinishCall(CallingConv::ID CallConv, DebugLoc dl,
// Emit tail call.
if (isTailCall) {
// If this is the first return lowered for this function, add the regs
// to the liveout set for the function.
if (DAG.getMachineFunction().getRegInfo().liveout_empty()) {
SmallVector<CCValAssign, 16> RVLocs;
CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
getTargetMachine(), RVLocs, *DAG.getContext());
CCInfo.AnalyzeCallResult(Ins, RetCC_PPC);
for (unsigned i = 0; i != RVLocs.size(); ++i)
DAG.getMachineFunction().getRegInfo().addLiveOut(RVLocs[i].getLocReg());
}
assert(((Callee.getOpcode() == ISD::Register &&
cast<RegisterSDNode>(Callee)->getReg() == PPC::CTR) ||
Callee.getOpcode() == ISD::TargetExternalSymbol ||
@ -4417,14 +4406,8 @@ PPCTargetLowering::LowerReturn(SDValue Chain,
getTargetMachine(), RVLocs, *DAG.getContext());
CCInfo.AnalyzeReturn(Outs, RetCC_PPC);
// If this is the first return lowered for this function, add the regs to the
// liveout set for the function.
if (DAG.getMachineFunction().getRegInfo().liveout_empty()) {
for (unsigned i = 0; i != RVLocs.size(); ++i)
DAG.getMachineFunction().getRegInfo().addLiveOut(RVLocs[i].getLocReg());
}
SDValue Flag;
SmallVector<SDValue, 4> RetOps(1, Chain);
// Copy the result values into the output registers.
for (unsigned i = 0; i != RVLocs.size(); ++i) {
@ -4449,12 +4432,17 @@ PPCTargetLowering::LowerReturn(SDValue Chain,
Chain = DAG.getCopyToReg(Chain, dl, VA.getLocReg(), Arg, Flag);
Flag = Chain.getValue(1);
RetOps.push_back(DAG.getRegister(VA.getLocReg(), VA.getLocVT()));
}
RetOps[0] = Chain; // Update chain.
// Add the flag if we have it.
if (Flag.getNode())
return DAG.getNode(PPCISD::RET_FLAG, dl, MVT::Other, Chain, Flag);
else
return DAG.getNode(PPCISD::RET_FLAG, dl, MVT::Other, Chain);
RetOps.push_back(Flag);
return DAG.getNode(PPCISD::RET_FLAG, dl, MVT::Other,
&RetOps[0], RetOps.size());
}
SDValue PPCTargetLowering::LowerSTACKRESTORE(SDValue Op, SelectionDAG &DAG,