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[ThinLTO/CFI] Include TYPE_ID summaries into GLOBALVAL_SUMMARY_BLOCK

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Summary:
TypeID summaries are used by CFI and need to be serialized by ThinLTO
indexing for later use by LTO Backend.

Reviewers: tejohnson, pcc

Subscribers: mehdi_amini, inglorion, eraman, hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D42611

llvm-svn: 325182
This commit is contained in:
Vitaly Buka
2018-02-14 22:41:15 +00:00
parent de8140066a
commit 44396faabc
10 changed files with 306 additions and 2 deletions
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55
llvm/lib/Bitcode/Reader/BitcodeReader.cpp
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@@ -5071,6 +5071,56 @@ ModuleSummaryIndexBitcodeReader::makeCallList(ArrayRef<uint64_t> Record,
return Ret;
}
static void
parseWholeProgramDevirtResolutionByArg(ArrayRef<uint64_t> Record, size_t &Slot,
WholeProgramDevirtResolution &Wpd) {
uint64_t ArgNum = Record[Slot++];
WholeProgramDevirtResolution::ByArg &B =
Wpd.ResByArg[{Record.begin() + Slot, Record.begin() + Slot + ArgNum}];
Slot += ArgNum;
B.TheKind =
static_cast<WholeProgramDevirtResolution::ByArg::Kind>(Record[Slot++]);
B.Info = Record[Slot++];
B.Byte = Record[Slot++];
B.Bit = Record[Slot++];
}
static void parseWholeProgramDevirtResolution(ArrayRef<uint64_t> Record,
StringRef Strtab, size_t &Slot,
TypeIdSummary &TypeId) {
uint64_t Id = Record[Slot++];
WholeProgramDevirtResolution &Wpd = TypeId.WPDRes[Id];
Wpd.TheKind = static_cast<WholeProgramDevirtResolution::Kind>(Record[Slot++]);
Wpd.SingleImplName = {Strtab.data() + Record[Slot],
static_cast<size_t>(Record[Slot + 1])};
Slot += 2;
uint64_t ResByArgNum = Record[Slot++];
for (uint64_t I = 0; I != ResByArgNum; ++I)
parseWholeProgramDevirtResolutionByArg(Record, Slot, Wpd);
}
static void parseTypeIdSummaryRecord(ArrayRef<uint64_t> Record,
StringRef Strtab,
ModuleSummaryIndex &TheIndex) {
size_t Slot = 0;
TypeIdSummary &TypeId = TheIndex.getOrInsertTypeIdSummary(
{Strtab.data() + Record[Slot], static_cast<size_t>(Record[Slot + 1])});
Slot += 2;
TypeId.TTRes.TheKind = static_cast<TypeTestResolution::Kind>(Record[Slot++]);
TypeId.TTRes.SizeM1BitWidth = Record[Slot++];
TypeId.TTRes.AlignLog2 = Record[Slot++];
TypeId.TTRes.SizeM1 = Record[Slot++];
TypeId.TTRes.BitMask = Record[Slot++];
TypeId.TTRes.InlineBits = Record[Slot++];
while (Slot < Record.size())
parseWholeProgramDevirtResolution(Record, Strtab, Slot, TypeId);
}
// Eagerly parse the entire summary block. This populates the GlobalValueSummary
// objects in the index.
Error ModuleSummaryIndexBitcodeReader::parseEntireSummary(unsigned ID) {
@@ -5388,6 +5438,7 @@ Error ModuleSummaryIndexBitcodeReader::parseEntireSummary(unsigned ID) {
{Strtab.data() + Record[I], static_cast<size_t>(Record[I + 1])});
break;
}
case bitc::FS_CFI_FUNCTION_DECLS: {
std::set<std::string> &CfiFunctionDecls = TheIndex.cfiFunctionDecls();
for (unsigned I = 0; I != Record.size(); I += 2)
@@ -5395,6 +5446,10 @@ Error ModuleSummaryIndexBitcodeReader::parseEntireSummary(unsigned ID) {
{Strtab.data() + Record[I], static_cast<size_t>(Record[I + 1])});
break;
}
case bitc::FS_TYPE_ID:
parseTypeIdSummaryRecord(Record, Strtab, TheIndex);
break;
}
}
llvm_unreachable("Exit infinite loop");