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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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27
lib/Bitcode/Reader/BitcodeReader.cpp
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@ -734,6 +734,33 @@ bool BitcodeReader::ParseMetadata() {
switch (Stream.ReadRecord(Code, Record)) {
default: // Default behavior: ignore.
break;
case bitc::METADATA_NAME: {
// Read named of the named metadata.
unsigned NameLength = Record.size();
SmallString<8> Name;
Name.resize(NameLength);
for (unsigned i = 0; i != NameLength; ++i)
Name[i] = Record[i];
Record.clear();
Code = Stream.ReadCode();
// METADATA_NAME is always followed by METADATA_NAMED_NODE.
if (Stream.ReadRecord(Code, Record) != bitc::METADATA_NAMED_NODE)
assert ( 0 && "Inavlid Named Metadata record");
// Read named metadata elements.
unsigned Size = Record.size();
SmallVector<MetadataBase*, 8> Elts;
for (unsigned i = 0; i != Size; ++i) {
Value *MD = ValueList.getValueFwdRef(Record[i], Type::MetadataTy);
if (MetadataBase *B = dyn_cast<MetadataBase>(MD))
Elts.push_back(B);
}
Value *V = NamedMDNode::Create(Name.c_str(), Elts.data(), Elts.size(),
TheModule);
ValueList.AssignValue(V, NextValueNo++);
break;
}
case bitc::METADATA_NODE: {
if (Record.empty() || Record.size() % 2 == 1)
return Error("Invalid METADATA_NODE record");