diff options
| author | Rafael Espindola <rafael.espindola@gmail.com> | 2010-06-26 18:22:20 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2010-06-26 18:22:20 +0000 |
| commit | 72d13ff755fe8484c89468252f945ba23fe98f71 (patch) | |
| tree | 053e915fdae2948c982c6009a8bf4fd0413dd164 /lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp | |
| parent | de4fe231392165c7566081fb3f86aee4f6a4e0d6 (diff) | |
| download | llvm-72d13ff755fe8484c89468252f945ba23fe98f71.tar.gz llvm-72d13ff755fe8484c89468252f945ba23fe98f71.tar.bz2 llvm-72d13ff755fe8484c89468252f945ba23fe98f71.tar.xz | |
When splitting a VAARG, remember its alignment.
This produces terrible but correct code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106952 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp b/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp index 88e1e624ae..71adb33617 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp @@ -238,12 +238,17 @@ void DAGTypeLegalizer::ExpandRes_NormalLoad(SDNode *N, SDValue &Lo, } void DAGTypeLegalizer::ExpandRes_VAARG(SDNode *N, SDValue &Lo, SDValue &Hi) { - EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); + EVT OVT = N->getValueType(0); + EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), OVT); SDValue Chain = N->getOperand(0); SDValue Ptr = N->getOperand(1); DebugLoc dl = N->getDebugLoc(); + const unsigned OldAlign = N->getConstantOperandVal(3); + const Type *Type = OVT.getTypeForEVT(*DAG.getContext()); + const unsigned TypeAlign = TLI.getTargetData()->getABITypeAlignment(Type); + const unsigned Align = std::max(OldAlign, TypeAlign); - Lo = DAG.getVAArg(NVT, dl, Chain, Ptr, N->getOperand(2)); + Lo = DAG.getVAArg(NVT, dl, Chain, Ptr, N->getOperand(2), Align); Hi = DAG.getVAArg(NVT, dl, Lo.getValue(1), Ptr, N->getOperand(2)); // Handle endianness of the load. |