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IR: Assembly and bitcode for GenericDebugNode

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228041 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2015-02-03 21:54:14 +00:00
parent 90eef42c8e
commit 6adbfa3815
11 changed files with 178 additions and 13 deletions
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32
lib/Bitcode/Reader/BitcodeReader.cpp
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@@ -1181,6 +1181,17 @@ std::error_code BitcodeReader::ParseMetadata() {
SmallVector<uint64_t, 64> Record;
auto getMDString = [&](unsigned ID) -> MDString *{
// This requires that the ID is not really a forward reference. In
// particular, the MDString must already have been resolved.
if (ID)
return cast<MDString>(MDValueList.getValueFwdRef(ID - 1));
return nullptr;
};
#define GET_OR_DISTINCT(CLASS, DISTINCT, ARGS) \
(DISTINCT ? CLASS::getDistinct ARGS : CLASS::get ARGS)
// Read all the records.
while (1) {
BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
@@ -1318,6 +1329,26 @@ std::error_code BitcodeReader::ParseMetadata() {
NextMDValueNo++);
break;
}
case bitc::METADATA_GENERIC_DEBUG: {
if (Record.size() < 4)
return Error("Invalid record");
unsigned Tag = Record[1];
unsigned Version = Record[2];
if (Tag >= 1u << 16 || Version != 0)
return Error("Invalid record");
auto *Header = getMDString(Record[3]);
SmallVector<Metadata *, 8> DwarfOps;
for (unsigned I = 4, E = Record.size(); I != E; ++I)
DwarfOps.push_back(Record[I] ? MDValueList.getValueFwdRef(Record[I] - 1)
: nullptr);
MDValueList.AssignValue(GET_OR_DISTINCT(GenericDebugNode, Record[0],
(Context, Tag, Header, DwarfOps)),
NextMDValueNo++);
break;
}
case bitc::METADATA_STRING: {
std::string String(Record.begin(), Record.end());
llvm::UpgradeMDStringConstant(String);
@@ -1339,6 +1370,7 @@ std::error_code BitcodeReader::ParseMetadata() {
}
}
}
#undef GET_OR_DISTINCT
}
/// decodeSignRotatedValue - Decode a signed value stored with the sign bit in