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ByVal arguments are passed on stack. Make sure to allocate a slot using size and alignment information on the parameter attribute.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45897 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-01-12 01:07:41 +00:00
parent 144ad580fd
commit 01b8fccca0
1 changed files with 20 additions and 7 deletions
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27
utils/TableGen/CallingConvEmitter.cpp
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@ -115,19 +115,32 @@ void CallingConvEmitter::EmitAction(Record *Action,
int Size = Action->getValueAsInt("Size");
int Align = Action->getValueAsInt("Align");
O << IndentStr << "unsigned Offset" << ++Counter
<< " = State.AllocateStack(";
O << IndentStr << "unsigned Size = ";
if (Size)
O << Size << ", ";
O << Size;
else
O << "\n" << IndentStr << " State.getTarget().getTargetData()"
"->getABITypeSize(MVT::getTypeForValueType(LocVT)), ";
O << "State.getTarget().getTargetData()"
"->getABITypeSize(MVT::getTypeForValueType(LocVT))";
O << ";\n"
<< IndentStr << "unsigned Align = ";
if (Align)
O << Align;
else
O << "\n" << IndentStr << " State.getTarget().getTargetData()"
O << "State.getTarget().getTargetData()"
"->getABITypeAlignment(MVT::getTypeForValueType(LocVT))";
O << ");\n" << IndentStr
O << ";\n";
O << IndentStr << "if (ArgFlags & ISD::ParamFlags::ByVal) {\n";
O << IndentStr << " " <<
"Size = (ArgFlags & ISD::ParamFlags::ByValSize) >> "
"ISD::ParamFlags::ByValSizeOffs;\n";
O << IndentStr << " " <<
"unsigned ParamAlign = 1 << ((ArgFlags & ISD::ParamFlags::ByValAlign) "
">> ISD::ParamFlags::ByValAlignOffs);\n";
O << IndentStr << " Align = std::max(Align, ParamAlign);\n"
<< IndentStr << "}\n";
O << IndentStr << "unsigned Offset" << ++Counter
<< " = State.AllocateStack(Size, Align);\n";
O << IndentStr
<< "State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset"
<< Counter << ", LocVT, LocInfo));\n";
O << IndentStr << "return false;\n";