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PR3686: make the legalizer handle bitcast from i80 to x86 long double.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66021 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman
2009-03-04 06:23:34 +00:00
parent 29582d1223
commit 27759f41ca
3 changed files with 20 additions and 0 deletions
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7
lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
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@@ -667,6 +667,7 @@ bool DAGTypeLegalizer::PromoteIntegerOperand(SDNode *N, unsigned OpNo) {
abort();
case ISD::ANY_EXTEND: Res = PromoteIntOp_ANY_EXTEND(N); break;
case ISD::BIT_CONVERT: Res = PromoteIntOp_BIT_CONVERT(N); break;
case ISD::BR_CC: Res = PromoteIntOp_BR_CC(N, OpNo); break;
case ISD::BRCOND: Res = PromoteIntOp_BRCOND(N, OpNo); break;
case ISD::BUILD_PAIR: Res = PromoteIntOp_BUILD_PAIR(N); break;
@@ -745,6 +746,12 @@ SDValue DAGTypeLegalizer::PromoteIntOp_ANY_EXTEND(SDNode *N) {
return DAG.getNode(ISD::ANY_EXTEND, N->getDebugLoc(), N->getValueType(0), Op);
}
SDValue DAGTypeLegalizer::PromoteIntOp_BIT_CONVERT(SDNode *N) {
// This should only occur in unusual situations like bitcasting to an
// x86_fp80, so just turn it into a store+load
return CreateStackStoreLoad(N->getOperand(0), N->getValueType(0));
}
SDValue DAGTypeLegalizer::PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo) {
assert(OpNo == 2 && "Don't know how to promote this operand!");