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Lower FRAME_TO_ADDR_OFFSET to zero by default (if not custom lowered)

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llvm-svn: 41578
This commit is contained in:
Anton Korobeynikov 2007-08-29 19:28:29 +00:00
parent 26ef2a1767
commit a3531f71ca
1 changed files with 13 additions and 1 deletions
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14
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -733,7 +733,6 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
break;
case ISD::FRAMEADDR:
case ISD::RETURNADDR:
case ISD::FRAME_TO_ARGS_OFFSET:
// The only option for these nodes is to custom lower them. If the target
// does not custom lower them, then return zero.
Tmp1 = TLI.LowerOperation(Op, DAG);
@ -742,6 +741,19 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
else
Result = DAG.getConstant(0, TLI.getPointerTy());
break;
case ISD::FRAME_TO_ARGS_OFFSET:
MVT::ValueType VT = Node->getValueType(0);
switch (TLI.getOperationAction(Node->getOpcode(), VT)) {
default: assert(0 && "This action is not supported yet!");
case TargetLowering::Custom:
Result = TLI.LowerOperation(Op, DAG);
if (Result.Val) break;
// Fall Thru
case TargetLowering::Legal:
Result = DAG.getConstant(0, VT);
break;
}
break;
case ISD::EXCEPTIONADDR: {
Tmp1 = LegalizeOp(Node->getOperand(0));
MVT::ValueType VT = Node->getValueType(0);