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Vector type promotion for ISD::LOAD and ISD::SELECT 

llvm-svn: 27606
This commit is contained in:
Evan Cheng 2006-04-12 16:33:18 +00:00
parent 0574fca0e5
commit be8a8933e6
1 changed files with 23 additions and 9 deletions
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32
llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -1256,25 +1256,36 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
MVT::ValueType VT = Node->getValueType(0);
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, Node->getOperand(2));
Tmp2 = Result.getValue(0);
Tmp3 = Result.getValue(1);
Tmp3 = Result.getValue(0);
Tmp4 = Result.getValue(1);
switch (TLI.getOperationAction(Node->getOpcode(), VT)) {
default: assert(0 && "This action is not supported yet!");
case TargetLowering::Legal: break;
case TargetLowering::Custom:
Tmp1 = TLI.LowerOperation(Tmp2, DAG);
Tmp1 = TLI.LowerOperation(Tmp3, DAG);
if (Tmp1.Val) {
Tmp2 = LegalizeOp(Tmp1);
Tmp3 = LegalizeOp(Tmp1.getValue(1));
Tmp3 = LegalizeOp(Tmp1);
Tmp4 = LegalizeOp(Tmp1.getValue(1));
}
break;
case TargetLowering::Promote: {
// Only promote a load of vector type to another.
assert(MVT::isVector(VT) && "Cannot promote this load!");
// Change base type to a different vector type.
MVT::ValueType NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), VT);
Tmp1 = DAG.getLoad(NVT, Tmp1, Tmp2, Node->getOperand(2));
Tmp3 = LegalizeOp(DAG.getNode(ISD::BIT_CONVERT, VT, Tmp1));
Tmp4 = LegalizeOp(Tmp1.getValue(1));
break;
}
}
// Since loads produce two values, make sure to remember that we
// legalized both of them.
AddLegalizedOperand(SDOperand(Node, 0), Tmp2);
AddLegalizedOperand(SDOperand(Node, 1), Tmp3);
return Op.ResNo ? Tmp3 : Tmp2;
AddLegalizedOperand(SDOperand(Node, 0), Tmp3);
AddLegalizedOperand(SDOperand(Node, 1), Tmp4);
return Op.ResNo ? Tmp4 : Tmp3;
}
case ISD::EXTLOAD:
case ISD::SEXTLOAD:
@ -1755,7 +1766,10 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
MVT::ValueType NVT =
TLI.getTypeToPromoteTo(ISD::SELECT, Tmp2.getValueType());
unsigned ExtOp, TruncOp;
if (MVT::isInteger(Tmp2.getValueType())) {
if (MVT::isVector(Tmp2.getValueType())) {
ExtOp = ISD::BIT_CONVERT;
TruncOp = ISD::BIT_CONVERT;
} else if (MVT::isInteger(Tmp2.getValueType())) {
ExtOp = ISD::ANY_EXTEND;
TruncOp = ISD::TRUNCATE;
} else {