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Allow custom lowering of DYNAMIC_STACKALLOC.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25224 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-01-11 22:14:47 +00:00
parent 140e99babc
commit a7dce3c6c2
1 changed files with 20 additions and 7 deletions
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27
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -829,7 +829,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
// legalization process more efficient and also makes libcall insertion
// easier.
break;
case ISD::DYNAMIC_STACKALLOC:
case ISD::DYNAMIC_STACKALLOC: {
Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain.
Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the size.
Tmp3 = LegalizeOp(Node->getOperand(2)); // Legalize the alignment.
@ -842,12 +842,25 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
} else
Result = Op.getValue(0);
// Since this op produces two values, make sure to remember that we
// legalized both of them.
AddLegalizedOperand(SDOperand(Node, 0), Result);
AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1));
return Result.getValue(Op.ResNo);
switch (TLI.getOperationAction(Node->getOpcode(),
Node->getValueType(0))) {
default: assert(0 && "This action is not supported yet!");
case TargetLowering::Custom: {
SDOperand Tmp = TLI.LowerOperation(Result, DAG);
if (Tmp.Val) {
Result = LegalizeOp(Tmp);
}
// FALLTHROUGH if the target thinks it is legal.
}
case TargetLowering::Legal:
// Since this op produce two values, make sure to remember that we
// legalized both of them.
AddLegalizedOperand(SDOperand(Node, 0), Result);
AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1));
return Result.getValue(Op.ResNo);
}
assert(0 && "Unreachable");
}
case ISD::TAILCALL:
case ISD::CALL: {
Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain.