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Implement ADD_PARTS/SUB_PARTS so that 64-bit integer add/sub work. This

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fixes most of the remaining llc-beta failures.

llvm-svn: 19716
This commit is contained in:
Chris Lattner 2005-01-20 18:53:00 +00:00
parent c95c7c90c9
commit febeb380ae
1 changed files with 32 additions and 6 deletions
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38
lib/Target/X86/X86ISelPattern.cpp
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@ -1303,20 +1303,28 @@ unsigned ISel::SelectExpr(SDOperand N) {
unsigned &Reg = ExprMap[N];
if (Reg) return Reg;
if (N.getOpcode() != ISD::CALL)
if (N.getOpcode() != ISD::CALL && N.getOpcode() != ISD::ADD_PARTS &&
N.getOpcode() != ISD::SUB_PARTS)
Reg = Result = (N.getValueType() != MVT::Other) ?
MakeReg(N.getValueType()) : 1;
else {
// If this is a call instruction, make sure to prepare ALL of the result
// values as well as the chain.
if (Node->getNumValues() == 1)
Reg = Result = 1; // Void call, just a chain.
else {
if (N.getOpcode() == ISD::CALL) {
if (Node->getNumValues() == 1)
Reg = Result = 1; // Void call, just a chain.
else {
Result = MakeReg(Node->getValueType(0));
ExprMap[N.getValue(0)] = Result;
for (unsigned i = 1, e = N.Val->getNumValues()-1; i != e; ++i)
ExprMap[N.getValue(i)] = MakeReg(Node->getValueType(i));
ExprMap[SDOperand(Node, Node->getNumValues()-1)] = 1;
}
} else {
Result = MakeReg(Node->getValueType(0));
ExprMap[N.getValue(0)] = Result;
for (unsigned i = 1, e = N.Val->getNumValues()-1; i != e; ++i)
for (unsigned i = 1, e = N.Val->getNumValues(); i != e; ++i)
ExprMap[N.getValue(i)] = MakeReg(Node->getValueType(i));
ExprMap[SDOperand(Node, Node->getNumValues()-1)] = 1;
}
}
@ -1972,6 +1980,24 @@ unsigned ISel::SelectExpr(SDOperand N) {
}
return Result;
}
case ISD::ADD_PARTS:
case ISD::SUB_PARTS: {
assert(N.getNumOperands() == 4 && N.getValueType() == MVT::i32 &&
"Not an i64 add/sub!");
// Emit all of the operands.
std::vector<unsigned> InVals;
for (unsigned i = 0, e = N.getNumOperands(); i != e; ++i)
InVals.push_back(SelectExpr(N.getOperand(i)));
if (N.getOpcode() == ISD::ADD_PARTS) {
BuildMI(BB, X86::ADD32rr, 2, Result).addReg(InVals[0]).addReg(InVals[2]);
BuildMI(BB, X86::ADC32rr,2,Result+1).addReg(InVals[1]).addReg(InVals[3]);
} else {
BuildMI(BB, X86::SUB32rr, 2, Result).addReg(InVals[0]).addReg(InVals[2]);
BuildMI(BB, X86::SBB32rr, 2,Result+1).addReg(InVals[1]).addReg(InVals[3]);
}
return Result+N.ResNo;
}
case ISD::SELECT:
if (getRegPressure(N.getOperand(1)) > getRegPressure(N.getOperand(2))) {
Tmp2 = SelectExpr(N.getOperand(1));