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Fix PR2977: LegalizeTypes support for expanding

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VAARG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58379 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands
2008-10-29 14:25:28 +00:00
parent d22ec5f628
commit 21c2972f7d
5 changed files with 30 additions and 0 deletions
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17
lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp
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@@ -171,6 +171,23 @@ void DAGTypeLegalizer::ExpandRes_NormalLoad(SDNode *N, SDValue &Lo,
ReplaceValueWith(SDValue(N, 1), Chain);
}
void DAGTypeLegalizer::ExpandRes_VAARG(SDNode *N, SDValue &Lo, SDValue &Hi) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
SDValue Chain = N->getOperand(0);
SDValue Ptr = N->getOperand(1);
Lo = DAG.getVAArg(NVT, Chain, Ptr, N->getOperand(2));
Hi = DAG.getVAArg(NVT, Lo.getValue(1), Ptr, N->getOperand(2));
// Handle endianness of the load.
if (TLI.isBigEndian())
std::swap(Lo, Hi);
// Modified the chain - switch anything that used the old chain to use
// the new one.
ReplaceValueWith(SDValue(N, 1), Hi.getValue(1));
}
//===--------------------------------------------------------------------===//
// Generic Operand Expansion.