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Add support for a new STRING and LOCATION node for line number support, patch

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contributed by Daniel Berlin, with a few cleanups here and there by me.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24515 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2005-11-29 06:21:05 +00:00
parent 02fc8ff800
commit 36ce69195e
4 changed files with 113 additions and 2 deletions
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27
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@@ -540,6 +540,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
case ISD::CONDCODE:
case ISD::VALUETYPE:
case ISD::SRCVALUE:
case ISD::STRING:
switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) {
default: assert(0 && "This action is not supported yet!");
case TargetLowering::Custom: {
@@ -601,6 +602,32 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
}
break;
}
case ISD::LOCATION:
assert(Node->getNumOperands() == 5 && "Invalid LOCATION node!");
Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the input chain.
switch (TLI.getOperationAction(ISD::LOCATION, MVT::Other)) {
case TargetLowering::Promote:
default: assert(0 && "This action is not supported yet!");
case TargetLowering::Expand:
// If the target doesn't support line numbers, ignore this node.
Result = Tmp1;
break;
case TargetLowering::Legal:
if (Tmp1 != Node->getOperand(0)) {
std::vector<SDOperand> Ops;
Ops.push_back(Tmp1);
Ops.push_back(Node->getOperand(1)); // line # must be legal.
Ops.push_back(Node->getOperand(2)); // col # must be legal.
Ops.push_back(Node->getOperand(3)); // filename must be legal.
Ops.push_back(Node->getOperand(4)); // working dir # must be legal.
Result = DAG.getNode(ISD::LOCATION, MVT::Other, Ops);
}
break;
}
break;
case ISD::Constant:
// We know we don't need to expand constants here, constants only have one
// value and we check that it is fine above.