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Support Custom lowering of a few more operations.

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Alpha needs to custom lower *DIV and *REM


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25006 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Lenharth 2005-12-24 23:42:32 +00:00
parent 330851a8f6
commit e8f65f1e62
1 changed files with 31 additions and 5 deletions
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36
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -537,6 +537,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
case ISD::GlobalAddress:
case ISD::TargetGlobalAddress:
case ISD::ExternalSymbol:
case ISD::TargetExternalSymbol:
case ISD::ConstantPool: // Nothing to do.
case ISD::BasicBlock:
case ISD::CONDCODE:
@ -1954,9 +1955,25 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
Tmp2 = PromoteOp(Node->getOperand(1)); // Promote the RHS.
break;
}
if (Tmp1 != Node->getOperand(0) ||
Tmp2 != Node->getOperand(1))
Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1,Tmp2);
switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) {
case TargetLowering::Legal:
if (Tmp1 != Node->getOperand(0) ||
Tmp2 != Node->getOperand(1))
Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1,Tmp2);
break;
case TargetLowering::Custom: {
Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1, Tmp2);
SDOperand Tmp = TLI.LowerOperation(Result, DAG);
if (Tmp.Val) {
Tmp = LegalizeOp(Tmp); // Relegalize input.
AddLegalizedOperand(Op, Tmp);
return Tmp;
}
break;
}
default:
assert(0 && "Operation not supported");
}
break;
case ISD::BUILD_PAIR: {
@ -1997,8 +2014,17 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
Tmp2);
break;
case TargetLowering::Promote:
case TargetLowering::Custom:
assert(0 && "Cannot promote/custom handle this yet!");
assert(0 && "Cannot promote handle this yet!");
case TargetLowering::Custom: {
Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1, Tmp2);
SDOperand Tmp = TLI.LowerOperation(Result, DAG);
if (Tmp.Val) {
Tmp = LegalizeOp(Tmp); // Relegalize input.
AddLegalizedOperand(Op, Tmp);
return Tmp;
}
break;
}
case TargetLowering::Expand:
if (MVT::isInteger(Node->getValueType(0))) {
MVT::ValueType VT = Node->getValueType(0);