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Add pointer indexing support

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1460 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2001-12-14 16:30:09 +00:00
parent f7a551fd92
commit b024ef5e62
1 changed files with 12 additions and 9 deletions
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21
lib/Bytecode/Reader/InstructionReader.cpp
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@ -350,8 +350,7 @@ bool BytecodeParser::ParseInstruction(const uchar *&Buf, const uchar *EndBuf,
case Instruction::GetElementPtr: {
vector<Value*> Idx;
if (!isa<PointerType>(Raw.Ty)) return failure(true);
const CompositeType *TopTy =
dyn_cast<CompositeType>(cast<PointerType>(Raw.Ty)->getElementType());
const CompositeType *TopTy = dyn_cast<CompositeType>(Raw.Ty);
switch (Raw.NumOperands) {
case 0: cerr << "Invalid load encountered!\n"; return failure(true);
@ -366,7 +365,7 @@ bool BytecodeParser::ParseInstruction(const uchar *&Buf, const uchar *EndBuf,
Idx.push_back(V = getValue(TopTy->getIndexType(), Raw.Arg2));
if (!V) return failure(true);
const Type *ETy = MemAccessInst::getIndexedType(Raw.Ty, Idx, true);
const Type *ETy = MemAccessInst::getIndexedType(TopTy, Idx, true);
const CompositeType *ElTy = dyn_cast_or_null<CompositeType>(ETy);
if (!ElTy) return failure(true);
@ -404,8 +403,7 @@ bool BytecodeParser::ParseInstruction(const uchar *&Buf, const uchar *EndBuf,
case Instruction::Store: {
vector<Value*> Idx;
if (!isa<PointerType>(Raw.Ty)) return failure(true);
const CompositeType *TopTy =
dyn_cast<CompositeType>(cast<PointerType>(Raw.Ty)->getElementType());
const CompositeType *TopTy = dyn_cast<CompositeType>(Raw.Ty);
switch (Raw.NumOperands) {
case 0:
@ -418,13 +416,18 @@ bool BytecodeParser::ParseInstruction(const uchar *&Buf, const uchar *EndBuf,
break;
default:
vector<unsigned> &args = *Raw.VarArgs;
for (unsigned i = 0, E = args.size(); i != E; ++i) {
const Type *ETy = MemAccessInst::getIndexedType(Raw.Ty, Idx, true);
const CompositeType *ElTy = dyn_cast_or_null<CompositeType>(ETy);
if (!ElTy) return failure(true);
const CompositeType *ElTy = TopTy;
unsigned i, E;
for (i = 0, E = args.size(); ElTy && i != E; ++i) {
Idx.push_back(V = getValue(ElTy->getIndexType(), args[i]));
if (!V) return failure(true);
const Type *ETy = MemAccessInst::getIndexedType(Raw.Ty, Idx, true);
ElTy = dyn_cast_or_null<CompositeType>(ETy);
}
if (i != E)
return failure(true); // didn't use up all of the indices!
delete Raw.VarArgs;
break;
}