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Fix CodeGen/Alpha/2006-07-03-ASMFormalLowering.ll and PR818.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29099 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-07-11 01:40:09 +00:00
parent 4de62eadf4
commit 25a022c780
1 changed files with 30 additions and 13 deletions
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43
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -1163,25 +1163,42 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
AddLegalizedOperand(SDOperand(Node, 1), Tmp2);
return Op.ResNo ? Tmp2 : Tmp1;
}
case ISD::INLINEASM:
Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize Chain.
Tmp2 = Node->getOperand(Node->getNumOperands()-1);
if (Tmp2.getValueType() == MVT::Flag) // Legalize Flag if it exists.
Tmp2 = Tmp3 = SDOperand(0, 0);
else
Tmp3 = LegalizeOp(Tmp2);
if (Tmp1 != Node->getOperand(0) || Tmp2 != Tmp3) {
std::vector<SDOperand> Ops(Node->op_begin(), Node->op_end());
Ops[0] = Tmp1;
if (Tmp3.Val) Ops.back() = Tmp3;
Result = DAG.UpdateNodeOperands(Result, Ops);
case ISD::INLINEASM: {
std::vector<SDOperand> Ops(Node->op_begin(), Node->op_end());
bool Changed = false;
// Legalize all of the operands of the inline asm, in case they are nodes
// that need to be expanded or something. Note we skip the asm string and
// all of the TargetConstant flags.
SDOperand Op = LegalizeOp(Ops[0]);
Changed = Op != Ops[0];
Ops[0] = Op;
bool HasInFlag = Ops.back().getValueType() == MVT::Flag;
for (unsigned i = 2, e = Ops.size()-HasInFlag; i < e; ) {
unsigned NumVals = cast<ConstantSDNode>(Ops[i])->getValue() >> 3;
for (++i; NumVals; ++i, --NumVals) {
SDOperand Op = LegalizeOp(Ops[i]);
if (Op != Ops[i]) {
Changed = true;
Ops[i] = Op;
}
}
}
if (HasInFlag) {
Op = LegalizeOp(Ops.back());
Changed |= Op != Ops.back();
Ops.back() = Op;
}
if (Changed)
Result = DAG.UpdateNodeOperands(Result, Ops);
// INLINE asm returns a chain and flag, make sure to add both to the map.
AddLegalizedOperand(SDOperand(Node, 0), Result.getValue(0));
AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1));
return Result.getValue(Op.ResNo);
}
case ISD::BR:
Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain.
// Ensure that libcalls are emitted before a branch.