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Derive MDNode from MetadataBase instead of Constant. Emit MDNodes into METADATA_BLOCK in bitcode file.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76834 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2009-07-23 01:07:34 +00:00
parent 0aaf4e91c2
commit 104cf9e02b
17 changed files with 109 additions and 154 deletions
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46
lib/Bitcode/Writer/BitcodeWriter.cpp
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@@ -478,8 +478,26 @@ static uint64_t GetOptimizationFlags(const Value *V) {
const ValueEnumerator::ValueList &Vals = VE.getValues();
bool StartedMetadataBlock = false;
unsigned MDSAbbrev = 0;
SmallVector<uint64_t, 64> Record;
for (unsigned i = 0, e = Vals.size(); i != e; ++i) {
if (const MDString *MDS = dyn_cast<MDString>(Vals[i].first)) {
if (const MDNode *N = dyn_cast<MDNode>(Vals[i].first)) {
if (!StartedMetadataBlock) {
Stream.EnterSubblock(bitc::METADATA_BLOCK_ID, 3);
StartedMetadataBlock = true;
}
for (unsigned i = 0, e = N->getNumElements(); i != e; ++i) {
if (N->getElement(i)) {
Record.push_back(VE.getTypeID(N->getElement(i)->getType()));
Record.push_back(VE.getValueID(N->getElement(i)));
} else {
Record.push_back(VE.getTypeID(Type::VoidTy));
Record.push_back(0);
}
}
Stream.EmitRecord(bitc::METADATA_NODE, Record, 0);
Record.clear();
} else if (const MDString *MDS = dyn_cast<MDString>(Vals[i].first)) {
if (!StartedMetadataBlock) {
Stream.EnterSubblock(bitc::METADATA_BLOCK_ID, 3);
@@ -492,15 +510,14 @@ static uint64_t GetOptimizationFlags(const Value *V) {
StartedMetadataBlock = true;
}
SmallVector<unsigned, 64> StrVals;
StrVals.clear();
// Code: [strchar x N]
const char *StrBegin = MDS->begin();
for (unsigned i = 0, e = MDS->size(); i != e; ++i)
StrVals.push_back(StrBegin[i]);
Record.push_back(StrBegin[i]);
// Emit the finished record.
Stream.EmitRecord(bitc::METADATA_STRING, StrVals, MDSAbbrev);
Stream.EmitRecord(bitc::METADATA_STRING, Record, MDSAbbrev);
Record.clear();
}
}
@@ -555,7 +572,7 @@ 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))
if (isa<MDString>(V) || isa<MDNode>(V))
continue;
// If we need to switch types, do so now.
if (V->getType() != LastTy) {
@@ -736,17 +753,6 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal,
Record.push_back(CE->getPredicate());
break;
}
} else if (const MDNode *N = dyn_cast<MDNode>(C)) {
Code = bitc::CST_CODE_MDNODE;
for (unsigned i = 0, e = N->getNumElements(); i != e; ++i) {
if (N->getElement(i)) {
Record.push_back(VE.getTypeID(N->getElement(i)->getType()));
Record.push_back(VE.getValueID(N->getElement(i)));
} else {
Record.push_back(VE.getTypeID(Type::VoidTy));
Record.push_back(0);
}
}
} else {
llvm_unreachable("Unknown constant!");
}
@@ -1342,12 +1348,12 @@ static void WriteModule(const Module *M, BitstreamWriter &Stream) {
// descriptors for global variables, and function prototype info.
WriteModuleInfo(M, VE, Stream);
// Emit constants.
WriteModuleConstants(VE, Stream);
// Emit metadata.
WriteModuleMetadata(VE, Stream);
// Emit constants.
WriteModuleConstants(VE, Stream);
// Emit function bodies.
for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
if (!I->isDeclaration())