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Write/read allocation instruction alignment info to .bc files.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24203 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-11-05 22:08:14 +00:00
parent 4e240c25e3
commit 42ba6b4b88
2 changed files with 21 additions and 8 deletions
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22
lib/Bytecode/Reader/Reader.cpp
View File

@ -902,27 +902,33 @@ void BytecodeReader::ParseInstruction(std::vector<unsigned> &Oprnds,
if (CallingConv) cast<InvokeInst>(Result)->setCallingConv(CallingConv);
break;
}
case Instruction::Malloc:
if (Oprnds.size() > 2)
case Instruction::Malloc: {
unsigned Align = 0;
if (Oprnds.size() == 2)
Align = (1 << Oprnds[1]) >> 1;
else if (Oprnds.size() > 2)
error("Invalid malloc instruction!");
if (!isa<PointerType>(InstTy))
error("Invalid malloc instruction!");
Result = new MallocInst(cast<PointerType>(InstTy)->getElementType(),
Oprnds.size() ? getValue(Type::UIntTyID,
Oprnds[0]) : 0);
getValue(Type::UIntTyID, Oprnds[0]), Align);
break;
}
case Instruction::Alloca:
if (Oprnds.size() > 2)
case Instruction::Alloca: {
unsigned Align = 0;
if (Oprnds.size() == 2)
Align = (1 << Oprnds[1]) >> 1;
else if (Oprnds.size() > 2)
error("Invalid alloca instruction!");
if (!isa<PointerType>(InstTy))
error("Invalid alloca instruction!");
Result = new AllocaInst(cast<PointerType>(InstTy)->getElementType(),
Oprnds.size() ? getValue(Type::UIntTyID,
Oprnds[0]) :0);
getValue(Type::UIntTyID, Oprnds[0]), Align);
break;
}
case Instruction::Free:
if (!isa<PointerType>(InstTy))
error("Invalid free instruction!");

7
lib/Bytecode/Writer/Writer.cpp
View File

@ -693,6 +693,13 @@ void BytecodeWriter::outputInstruction(const Instruction &I) {
assert(Slots[1] != ~0U && "Cast return type unknown?");
if (Slots[1] > MaxOpSlot) MaxOpSlot = Slots[1];
NumOperands++;
} else if (const AllocationInst *AI = dyn_cast<AllocationInst>(&I)) {
assert(NumOperands == 1 && "Bogus allocation!");
if (AI->getAlignment()) {
Slots[1] = Log2_32(AI->getAlignment())+1;
if (Slots[1] > MaxOpSlot) MaxOpSlot = Slots[1];
NumOperands = 2;
}
} else if (const GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(&I)) {
// We need to encode the type of sequential type indices into their slot #
unsigned Idx = 1;