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Bitcode support for allocas with arbitrary array size types.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104915 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-05-28 01:38:28 +00:00
parent 4251d85ae7
commit a37dd3e6a5
2 changed files with 11 additions and 5 deletions
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15
lib/Bitcode/Reader/BitcodeReader.cpp
View File

@ -2178,13 +2178,18 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
InstructionList.push_back(I);
break;
}
case bitc::FUNC_CODE_INST_ALLOCA: { // ALLOCA: [instty, op, align]
if (Record.size() < 3)
case bitc::FUNC_CODE_INST_ALLOCA: { // ALLOCA: [instty, opty, op, align]
// For backward compatibility, tolerate a lack of an opty, and use i32.
// LLVM 3.0: Remove this.
if (Record.size() < 3 || Record.size() > 4)
return Error("Invalid ALLOCA record");
unsigned OpNum = 0;
const PointerType *Ty =
dyn_cast_or_null<PointerType>(getTypeByID(Record[0]));
Value *Size = getFnValueByID(Record[1], Type::getInt32Ty(Context));
unsigned Align = Record[2];
dyn_cast_or_null<PointerType>(getTypeByID(Record[OpNum++]));
const Type *OpTy = Record.size() == 4 ? getTypeByID(Record[OpNum++]) :
Type::getInt32Ty(Context);
Value *Size = getFnValueByID(Record[OpNum++], OpTy);
unsigned Align = Record[OpNum++];
if (!Ty || !Size) return Error("Invalid ALLOCA record");
I = new AllocaInst(Ty->getElementType(), Size, (1 << Align) >> 1);
InstructionList.push_back(I);

1
lib/Bitcode/Writer/BitcodeWriter.cpp
View File

@ -1114,6 +1114,7 @@ static void WriteInstruction(const Instruction &I, unsigned InstID,
case Instruction::Alloca:
Code = bitc::FUNC_CODE_INST_ALLOCA;
Vals.push_back(VE.getTypeID(I.getType()));
Vals.push_back(VE.getTypeID(I.getOperand(0)->getType()));
Vals.push_back(VE.getValueID(I.getOperand(0))); // size.
Vals.push_back(Log2_32(cast<AllocaInst>(I).getAlignment())+1);
break;