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Read and write NamedMDNode.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77517 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2009-07-29 22:34:41 +00:00
parent debcb01b0f
commit aa99314251
5 changed files with 78 additions and 3 deletions
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30
lib/Bitcode/Writer/BitcodeWriter.cpp
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@ -495,6 +495,7 @@ static void WriteModuleMetadata(const ValueEnumerator &VE,
const ValueEnumerator::ValueList &Vals = VE.getValues();
bool StartedMetadataBlock = false;
unsigned MDSAbbrev = 0;
unsigned String8Abbrev = 0;
SmallVector<uint64_t, 64> Record;
for (unsigned i = 0, e = Vals.size(); i != e; ++i) {
@ -525,6 +526,33 @@ static void WriteModuleMetadata(const ValueEnumerator &VE,
// Emit the finished record.
Stream.EmitRecord(bitc::METADATA_STRING, Record, MDSAbbrev);
Record.clear();
} else if (const NamedMDNode *NMD = dyn_cast<NamedMDNode>(Vals[i].first)) {
if (!StartedMetadataBlock) {
Stream.EnterSubblock(bitc::METADATA_BLOCK_ID, 3);
StartedMetadataBlock = true;
BitCodeAbbrev *Abbv = new BitCodeAbbrev();
Abbv->Add(BitCodeAbbrevOp(bitc::CST_CODE_STRING));
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 8));
String8Abbrev = Stream.EmitAbbrev(Abbv);
}
// Write name.
const char *StrBegin = NMD->getName().data();
for (unsigned i = 0, e = NMD->getName().size(); i != e; ++i)
Record.push_back(StrBegin[i]);
Stream.EmitRecord(bitc::METADATA_NAME, Record, String8Abbrev);
Record.clear();
// Write named metadata elements.
for (unsigned i = 0, e = NMD->getNumElements(); i != e; ++i) {
if (NMD->getElement(i))
Record.push_back(VE.getValueID(NMD->getElement(i)));
else
Record.push_back(0);
}
Stream.EmitRecord(bitc::METADATA_NAMED_NODE, Record, 0);
Record.clear();
}
}
@ -578,7 +606,7 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal,
const Type *LastTy = 0;
for (unsigned i = FirstVal; i != LastVal; ++i) {
const Value *V = Vals[i].first;
if (isa<MDString>(V) || isa<MDNode>(V))
if (isa<MetadataBase>(V))
continue;
// If we need to switch types, do so now.
if (V->getType() != LastTy) {