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add some todos

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27580 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-04-11 02:00:08 +00:00
parent bee9836c0f
commit b49e52c7e2
1 changed files with 8 additions and 0 deletions
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8
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -1427,10 +1427,16 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
// Turn this into a return of the scalar type.
Tmp2 = PackVectorOp(Tmp2, EVT);
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2);
// FIXME: Returns of gcc generic vectors smaller than a legal type
// should be returned in integer registers!
// The scalarized value type may not be legal, e.g. it might require
// promotion or expansion. Relegalize the return.
Result = LegalizeOp(Result);
} else {
// FIXME: Returns of gcc generic vectors larger than a legal vector
// type should be returned by reference!
SDOperand Lo, Hi;
SplitVectorOp(Tmp2, Lo, Hi);
Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Lo, Hi);
@ -1458,6 +1464,8 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
break;
case Expand: {
SDOperand Lo, Hi;
assert(Node->getOperand(i).getValueType() != MVT::Vector &&
"FIXME: TODO: implement returning non-legal vector types!");
ExpandOp(Node->getOperand(i), Lo, Hi);
NewValues.push_back(Lo);
NewValues.push_back(Hi);