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Make 64bit args and float args work correct with calls. Thanks to Chris 

for explaining EXTRACT_ELEMENT to me.

llvm-svn: 20847
This commit is contained in:
Nate Begeman 2005-03-26 02:17:46 +00:00
parent 0bea1090dd
commit c95bf7b226
1 changed files with 28 additions and 10 deletions
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38
llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp
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@ -290,16 +290,23 @@ PPC32TargetLowering::LowerCallTo(SDOperand Chain,
// If we have 2 or more GPRs, we won't do anything and let the ISD::CALL
// functionality in SelectExpr move pieces for us.
if (GPR_remaining > 1) {
args_to_use.push_back(Args[i].first);
SDOperand Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, MVT::i32,
Args[i].first, DAG.getConstant(1, MVT::i32));
SDOperand Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, MVT::i32,
Args[i].first, DAG.getConstant(0, MVT::i32));
args_to_use.push_back(Hi);
args_to_use.push_back(Lo);
GPR_remaining -= 2;
} else if (GPR_remaining > 0) {
args_to_use.push_back(Args[i].first);
SDOperand LowPart =
DAG.getNode(ISD::TRUNCATE, MVT::i32, Args[i].first);
SDOperand Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, MVT::i32,
Args[i].first, DAG.getConstant(1, MVT::i32));
SDOperand Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, MVT::i32,
Args[i].first, DAG.getConstant(0, MVT::i32));
args_to_use.push_back(Hi);
SDOperand ConstFour = DAG.getConstant(4, getPointerTy());
PtrOff = DAG.getNode(ISD::ADD, MVT::i32, PtrOff, ConstFour);
Stores.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain,
LowPart, PtrOff));
Lo, PtrOff));
--GPR_remaining;
} else {
Stores.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain,
@ -312,6 +319,7 @@ PPC32TargetLowering::LowerCallTo(SDOperand Chain,
--FPR_remaining;
ArgOffset += 4;
} else if (FPR_remaining > 0) {
args_to_use.push_back(Args[i].first);
--FPR_remaining;
if (GPR_remaining > 0) --GPR_remaining;
} else {
@ -324,6 +332,7 @@ PPC32TargetLowering::LowerCallTo(SDOperand Chain,
if (FPR_remaining > 0 && GPR_remaining > 0 && isVarArg) {
--FPR_remaining;
} else if (FPR_remaining > 0) {
args_to_use.push_back(Args[i].first);
--FPR_remaining;
if (GPR_remaining > 0) --GPR_remaining;
if (GPR_remaining > 0) --GPR_remaining;
@ -546,9 +555,11 @@ unsigned ISel::SelectExprFP(SDOperand N, unsigned Result)
return Result;
case ISD::CopyFromReg:
// FIXME: Handle copy from physregs!
// Just use the specified register as our input.
return dyn_cast<RegSDNode>(Node)->getReg();
if (Result == 1)
Result = ExprMap[N.getValue(0)] = MakeReg(N.getValue(0).getValueType());
Tmp1 = dyn_cast<RegSDNode>(Node)->getReg();
BuildMI(BB, PPC::FMR, 1, Result).addReg(Tmp1);
return Result;
case ISD::LOAD:
case ISD::EXTLOAD:
@ -749,13 +760,20 @@ unsigned ISel::SelectExpr(SDOperand N) {
case MVT::f64:
if (FPR_remaining > 0) {
BuildMI(BB, PPC::FMR, 1, FPR[FPR_idx]).addReg(VRegs[i]);
++FPR_idx;
--FPR_remaining;
}
break;
}
// All arguments consume GPRs available for argument passing
if (GPR_remaining > 0) --GPR_remaining;
if (MVT::f64 == OperandType && GPR_remaining > 0) --GPR_remaining;
if (GPR_remaining > 0) {
++GPR_idx;
--GPR_remaining;
}
if (MVT::f64 == OperandType && GPR_remaining > 0) {
++GPR_idx;
--GPR_remaining;
}
}
// Emit the correct call instruction based on the type of symbol called.