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Add support for promoting stores from one legal type to another, allowing us

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to write one pattern for vector stores instead of 4.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27730 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-04-16 01:36:45 +00:00
parent b17f1679e3
commit 2efce0a589
1 changed files with 8 additions and 0 deletions
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8
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -1544,6 +1544,13 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
Tmp1 = TLI.LowerOperation(Result, DAG);
if (Tmp1.Val) Result = Tmp1;
break;
case TargetLowering::Promote:
assert(MVT::isVector(VT) && "Unknown legal promote case!");
Tmp3 = DAG.getNode(ISD::BIT_CONVERT,
TLI.getTypeToPromoteTo(ISD::STORE, VT), Tmp3);
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2,
Node->getOperand(3));
break;
}
break;
}
@ -1576,6 +1583,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
Tmp3 = PackVectorOp(Node->getOperand(1), TVT);
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2,
Node->getOperand(3));
Result = LegalizeOp(Result);
break;
} else if (NumElems == 1) {
// Turn this into a normal store of the scalar type.