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-rw-r--r--llvm/lib/LTO/LTO.cpp35
1 files changed, 24 insertions, 11 deletions
diff --git a/llvm/lib/LTO/LTO.cpp b/llvm/lib/LTO/LTO.cpp
index 35d24c17bbd9..ce9ecc35e192 100644
--- a/llvm/lib/LTO/LTO.cpp
+++ b/llvm/lib/LTO/LTO.cpp
@@ -631,6 +631,7 @@ LTO::~LTO() = default;
void LTO::addModuleToGlobalRes(ArrayRef<InputFile::Symbol> Syms,
ArrayRef<SymbolResolution> Res,
unsigned Partition, bool InSummary) {
+ llvm::TimeTraceScope timeScope("LTO add module to global resolution");
auto *ResI = Res.begin();
auto *ResE = Res.end();
(void)ResE;
@@ -731,6 +732,7 @@ static void writeToResolutionFile(raw_ostream &OS, InputFile *Input,
Error LTO::add(std::unique_ptr<InputFile> Input,
ArrayRef<SymbolResolution> Res) {
+ llvm::TimeTraceScope timeScope("LTO add input", Input->getName());
assert(!CalledGetMaxTasks);
if (Conf.ResolutionFile)
@@ -756,6 +758,7 @@ Error LTO::add(std::unique_ptr<InputFile> Input,
Expected<ArrayRef<SymbolResolution>>
LTO::addModule(InputFile &Input, ArrayRef<SymbolResolution> InputRes,
unsigned ModI, ArrayRef<SymbolResolution> Res) {
+ llvm::TimeTraceScope timeScope("LTO add module", Input.getName());
Expected<BitcodeLTOInfo> LTOInfo = Input.Mods[ModI].getLTOInfo();
if (!LTOInfo)
return LTOInfo.takeError();
@@ -850,6 +853,7 @@ Expected<
LTO::addRegularLTO(InputFile &Input, ArrayRef<SymbolResolution> InputRes,
BitcodeModule BM, ArrayRef<InputFile::Symbol> Syms,
ArrayRef<SymbolResolution> Res) {
+ llvm::TimeTraceScope timeScope("LTO add regular LTO");
RegularLTOState::AddedModule Mod;
Expected<std::unique_ptr<Module>> MOrErr =
BM.getLazyModule(RegularLTO.Ctx, /*ShouldLazyLoadMetadata*/ true,
@@ -1024,6 +1028,7 @@ LTO::addRegularLTO(InputFile &Input, ArrayRef<SymbolResolution> InputRes,
Error LTO::linkRegularLTO(RegularLTOState::AddedModule Mod,
bool LivenessFromIndex) {
+ llvm::TimeTraceScope timeScope("LTO link regular LTO");
std::vector<GlobalValue *> Keep;
for (GlobalValue *GV : Mod.Keep) {
if (LivenessFromIndex && !ThinLTO.CombinedIndex.isGUIDLive(GV->getGUID())) {
@@ -1063,6 +1068,7 @@ Error LTO::linkRegularLTO(RegularLTOState::AddedModule Mod,
Expected<ArrayRef<SymbolResolution>>
LTO::addThinLTO(BitcodeModule BM, ArrayRef<InputFile::Symbol> Syms,
ArrayRef<SymbolResolution> Res) {
+ llvm::TimeTraceScope timeScope("LTO add thin LTO");
ArrayRef<SymbolResolution> ResTmp = Res;
for (const InputFile::Symbol &Sym : Syms) {
assert(!ResTmp.empty());
@@ -1252,6 +1258,7 @@ Error LTO::run(AddStreamFn AddStream, FileCache Cache) {
void lto::updateMemProfAttributes(Module &Mod,
const ModuleSummaryIndex &Index) {
+ llvm::TimeTraceScope timeScope("LTO update memprof attributes");
if (Index.withSupportsHotColdNew())
return;
@@ -1282,6 +1289,7 @@ void lto::updateMemProfAttributes(Module &Mod,
}
Error LTO::runRegularLTO(AddStreamFn AddStream) {
+ llvm::TimeTraceScope timeScope("Run regular LTO");
// Setup optimization remarks.
auto DiagFileOrErr = lto::setupLLVMOptimizationRemarks(
RegularLTO.CombinedModule->getContext(), Conf.RemarksFilename,
@@ -1294,10 +1302,12 @@ Error LTO::runRegularLTO(AddStreamFn AddStream) {
// Finalize linking of regular LTO modules containing summaries now that
// we have computed liveness information.
- for (auto &M : RegularLTO.ModsWithSummaries)
- if (Error Err = linkRegularLTO(std::move(M),
- /*LivenessFromIndex=*/true))
- return Err;
+ {
+ llvm::TimeTraceScope timeScope("Link regular LTO");
+ for (auto &M : RegularLTO.ModsWithSummaries)
+ if (Error Err = linkRegularLTO(std::move(M), /*LivenessFromIndex=*/true))
+ return Err;
+ }
// Ensure we don't have inconsistently split LTO units with type tests.
// FIXME: this checks both LTO and ThinLTO. It happens to work as we take
@@ -1526,6 +1536,9 @@ public:
const std::map<GlobalValue::GUID, GlobalValue::LinkageTypes> &ResolvedODR,
const GVSummaryMapTy &DefinedGlobals,
MapVector<StringRef, BitcodeModule> &ModuleMap) {
+ auto ModuleID = BM.getModuleIdentifier();
+ llvm::TimeTraceScope timeScope("Run ThinLTO backend thread (in-process)",
+ ModuleID);
auto RunThinBackend = [&](AddStreamFn AddStream) {
LTOLLVMContext BackendContext(Conf);
Expected<std::unique_ptr<Module>> MOrErr = BM.parseModule(BackendContext);
@@ -1536,9 +1549,6 @@ public:
ImportList, DefinedGlobals, &ModuleMap,
Conf.CodeGenOnly);
};
-
- auto ModuleID = BM.getModuleIdentifier();
-
if (ShouldEmitIndexFiles) {
if (auto E = emitFiles(ImportList, ModuleID, ModuleID.str()))
return E;
@@ -1639,6 +1649,9 @@ public:
const std::map<GlobalValue::GUID, GlobalValue::LinkageTypes> &ResolvedODR,
const GVSummaryMapTy &DefinedGlobals,
MapVector<StringRef, BitcodeModule> &ModuleMap) override {
+ auto ModuleID = BM.getModuleIdentifier();
+ llvm::TimeTraceScope timeScope("Run ThinLTO backend thread (first round)",
+ ModuleID);
auto RunThinBackend = [&](AddStreamFn CGAddStream,
AddStreamFn IRAddStream) {
LTOLLVMContext BackendContext(Conf);
@@ -1650,8 +1663,6 @@ public:
ImportList, DefinedGlobals, &ModuleMap,
Conf.CodeGenOnly, IRAddStream);
};
-
- auto ModuleID = BM.getModuleIdentifier();
// Like InProcessThinBackend, we produce index files as needed for
// FirstRoundThinBackend. However, these files are not generated for
// SecondRoundThinBackend.
@@ -1735,6 +1746,9 @@ public:
const std::map<GlobalValue::GUID, GlobalValue::LinkageTypes> &ResolvedODR,
const GVSummaryMapTy &DefinedGlobals,
MapVector<StringRef, BitcodeModule> &ModuleMap) override {
+ auto ModuleID = BM.getModuleIdentifier();
+ llvm::TimeTraceScope timeScope("Run ThinLTO backend thread (second round)",
+ ModuleID);
auto RunThinBackend = [&](AddStreamFn AddStream) {
LTOLLVMContext BackendContext(Conf);
std::unique_ptr<Module> LoadedModule =
@@ -1744,8 +1758,6 @@ public:
ImportList, DefinedGlobals, &ModuleMap,
/*CodeGenOnly=*/true);
};
-
- auto ModuleID = BM.getModuleIdentifier();
if (!Cache.isValid() || !CombinedIndex.modulePaths().count(ModuleID) ||
all_of(CombinedIndex.getModuleHash(ModuleID),
[](uint32_t V) { return V == 0; }))
@@ -1915,6 +1927,7 @@ ThinBackend lto::createWriteIndexesThinBackend(
Error LTO::runThinLTO(AddStreamFn AddStream, FileCache Cache,
const DenseSet<GlobalValue::GUID> &GUIDPreservedSymbols) {
+ llvm::TimeTraceScope timeScope("Run ThinLTO");
LLVM_DEBUG(dbgs() << "Running ThinLTO\n");
ThinLTO.CombinedIndex.releaseTemporaryMemory();
timeTraceProfilerBegin("ThinLink", StringRef(""));
generated by cgit v1.2.3 (git 2.25.1) at 2026-05-31 17:17:37 +0000