}
}
+bool BitcodeReader::ParseMetadata() {
+ unsigned NextValueNo = ValueList.size();
+
+ if (Stream.EnterSubBlock(bitc::METADATA_BLOCK_ID))
+ return Error("Malformed block record");
+
+ SmallVector<uint64_t, 64> Record;
+
+ // Read all the records.
+ while (1) {
+ unsigned Code = Stream.ReadCode();
+ if (Code == bitc::END_BLOCK) {
+ if (Stream.ReadBlockEnd())
+ return Error("Error at end of PARAMATTR block");
+ return false;
+ }
+
+ if (Code == bitc::ENTER_SUBBLOCK) {
+ // No known subblocks, always skip them.
+ Stream.ReadSubBlockID();
+ if (Stream.SkipBlock())
+ return Error("Malformed block record");
+ continue;
+ }
+
+ if (Code == bitc::DEFINE_ABBREV) {
+ Stream.ReadAbbrevRecord();
+ continue;
+ }
+
+ // Read a record.
+ Record.clear();
+ switch (Stream.ReadRecord(Code, Record)) {
+ default: // Default behavior: ignore.
+ break;
+ case bitc::METADATA_NODE: {
+ if (Record.empty() || Record.size() % 2 == 1)
+ return Error("Invalid METADATA_NODE record");
+
+ unsigned Size = Record.size();
+ SmallVector<Value*, 8> Elts;
+ for (unsigned i = 0; i != Size; i += 2) {
+ const Type *Ty = getTypeByID(Record[i], false);
+ if (Ty != Type::VoidTy)
+ Elts.push_back(ValueList.getValueFwdRef(Record[i+1], Ty));
+ else
+ Elts.push_back(NULL);
+ }
+ Value *V = Context.getMDNode(&Elts[0], Elts.size());
+ ValueList.AssignValue(V, NextValueNo++);
+ break;
+ }
+ case bitc::METADATA_STRING: {
+ unsigned MDStringLength = Record.size();
+ SmallString<8> String;
+ String.resize(MDStringLength);
+ for (unsigned i = 0; i != MDStringLength; ++i)
+ String[i] = Record[i];
+ Value *V =
+ Context.getMDString(String.c_str(), String.c_str() + MDStringLength);
+ ValueList.AssignValue(V, NextValueNo++);
+ break;
+ }
+ }
+ }
+}
+
/// DecodeSignRotatedValue - Decode a signed value stored with the sign bit in
/// the LSB for dense VBR encoding.
static uint64_t DecodeSignRotatedValue(uint64_t V) {
AsmStr, ConstrStr, HasSideEffects);
break;
}
- case bitc::CST_CODE_MDSTRING: {
- unsigned MDStringLength = Record.size();
- SmallString<8> String;
- String.resize(MDStringLength);
- for (unsigned i = 0; i != MDStringLength; ++i)
- String[i] = Record[i];
- V = Context.getMDString(String.c_str(), String.c_str() + MDStringLength);
- break;
- }
- case bitc::CST_CODE_MDNODE: {
- if (Record.empty() || Record.size() % 2 == 1)
- return Error("Invalid CST_MDNODE record");
-
- unsigned Size = Record.size();
- SmallVector<Value*, 8> Elts;
- for (unsigned i = 0; i != Size; i += 2) {
- const Type *Ty = getTypeByID(Record[i], false);
- if (Ty != Type::VoidTy)
- Elts.push_back(ValueList.getValueFwdRef(Record[i+1], Ty));
- else
- Elts.push_back(NULL);
- }
- V = Context.getMDNode(&Elts[0], Elts.size());
- break;
- }
}
ValueList.AssignValue(V, NextCstNo);
if (ParseConstants() || ResolveGlobalAndAliasInits())
return true;
break;
+ case bitc::METADATA_BLOCK_ID:
+ if (ParseMetadata())
+ return true;
+ break;
case bitc::FUNCTION_BLOCK_ID:
// If this is the first function body we've seen, reverse the
// FunctionsWithBodies list.