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Write function-local metadata as a metadata subblock of a funciton block 

llvm-svn: 93339
This commit is contained in:
Victor Hernandez 2010-01-13 19:37:33 +00:00
parent cad7328d8c
commit b00a6beef6
1 changed files with 36 additions and 4 deletions
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40
llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
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@ -499,11 +499,13 @@ static void WriteModuleMetadata(const ValueEnumerator &VE,
for (unsigned i = 0, e = Vals.size(); i != e; ++i) {
if (const MDNode *N = dyn_cast<MDNode>(Vals[i].first)) {
if (!StartedMetadataBlock) {
Stream.EnterSubblock(bitc::METADATA_BLOCK_ID, 3);
StartedMetadataBlock = true;
if (!N->isFunctionLocal()) {
if (!StartedMetadataBlock) {
Stream.EnterSubblock(bitc::METADATA_BLOCK_ID, 3);
StartedMetadataBlock = true;
}
WriteMDNode(N, VE, Stream, Record);
}
WriteMDNode(N, VE, Stream, Record);
} else if (const MDString *MDS = dyn_cast<MDString>(Vals[i].first)) {
if (!StartedMetadataBlock) {
Stream.EnterSubblock(bitc::METADATA_BLOCK_ID, 3);
@ -552,6 +554,35 @@ static void WriteModuleMetadata(const ValueEnumerator &VE,
Stream.ExitBlock();
}
static void WriteFunctionLocalMetadata(const ValueEnumerator &VE,
BitstreamWriter &Stream) {
bool StartedMetadataBlock = false;
SmallVector<uint64_t, 64> Record;
ValueEnumerator::ValueList Vals = VE.getMDValues();
ValueEnumerator::ValueList::iterator it = Vals.begin();
ValueEnumerator::ValueList::iterator end = Vals.end();
while (it != end) {
if (const MDNode *N = dyn_cast<MDNode>((*it).first)) {
if (N->isFunctionLocal()) {
if (!StartedMetadataBlock) {
Stream.EnterSubblock(bitc::METADATA_BLOCK_ID, 3);
StartedMetadataBlock = true;
}
WriteMDNode(N, VE, Stream, Record);
// Remove function-local MD, since it is used outside of function.
it = Vals.erase(it);
end = Vals.end();
continue;
}
}
++it;
}
if (StartedMetadataBlock)
Stream.ExitBlock();
}
static void WriteMetadataAttachment(const Function &F,
const ValueEnumerator &VE,
BitstreamWriter &Stream) {
@ -1210,6 +1241,7 @@ static void WriteFunction(const Function &F, ValueEnumerator &VE,
// Emit names for all the instructions etc.
WriteValueSymbolTable(F.getValueSymbolTable(), VE, Stream);
WriteFunctionLocalMetadata(VE, Stream);
WriteMetadataAttachment(F, VE, Stream);
VE.purgeFunction();
Stream.ExitBlock();