diff options
Diffstat (limited to 'lib/Target/X86')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 179c47a..f32e6f6 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -1378,7 +1378,27 @@ X86TargetLowering::LowerX86_64CCCCallTo(SDOperand Op, SelectionDAG &DAG, StackPtr = DAG.getRegister(getStackPtrReg(), getPointerTy()); SDOperand PtrOff = DAG.getConstant(VA.getLocMemOffset(), getPointerTy()); PtrOff = DAG.getNode(ISD::ADD, getPointerTy(), StackPtr, PtrOff); - MemOpChains.push_back(DAG.getStore(Chain, Arg, PtrOff, NULL, 0)); + + SDOperand FlagsOp = Op.getOperand(6+2*VA.getValNo()); + unsigned Flags = cast<ConstantSDNode>(FlagsOp)->getValue(); + if (Flags & ISD::ParamFlags::ByVal) { + unsigned Align = 1 << ((Flags & ISD::ParamFlags::ByValAlign) >> + ISD::ParamFlags::ByValAlignOffs); + unsigned Size = (Flags & ISD::ParamFlags::ByValSize) >> + ISD::ParamFlags::ByValSizeOffs; + + SDOperand AlignNode = DAG.getConstant(Align, MVT::i32); + SDOperand SizeNode = DAG.getConstant(Size, MVT::i32); + + assert(0 && "Not Implemented"); + + SDOperand Copy = DAG.getNode(ISD::MEMCPY, MVT::Other, Chain, PtrOff, + Arg, SizeNode, AlignNode); + MemOpChains.push_back(Copy); + } + else { + MemOpChains.push_back(DAG.getStore(Chain, Arg, PtrOff, NULL, 0)); + } } } |