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Teach Legalize how to expand an EXTRACT_ELEMENT.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47656 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-02-27 01:52:30 +00:00
parent b3564aa836
commit 1953ecb0a6
1 changed files with 6 additions and 0 deletions
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6
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -5739,6 +5739,12 @@ void SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){
#endif
assert(0 && "Do not know how to expand this operator!");
abort();
case ISD::EXTRACT_ELEMENT:
ExpandOp(Node->getOperand(0), Lo, Hi);
if (cast<ConstantSDNode>(Node->getOperand(1))->getValue())
return ExpandOp(Hi, Lo, Hi);
else
return ExpandOp(Lo, Lo, Hi);
case ISD::EXTRACT_VECTOR_ELT:
assert(VT==MVT::i64 && "Do not know how to expand this operator!");
// ExpandEXTRACT_VECTOR_ELT tolerates invalid result types.