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[ThinLTO] Don't perform computeDeadSymbols during O0 link, as the result is never used (NFC)

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llvm-svn: 292679
This commit is contained in:
Mehdi Amini 2017-01-20 23:34:12 +00:00
parent ad5b04fd3b
commit 7a9494b639
1 changed files with 13 additions and 13 deletions
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14
lib/LTO/LTO.cpp
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@ -856,6 +856,13 @@ Error LTO::runThinLTO(AddStreamFn AddStream, NativeObjectCache Cache,
if (!ModuleToDefinedGVSummaries.count(Mod.first))
ModuleToDefinedGVSummaries.try_emplace(Mod.first);
StringMap<FunctionImporter::ImportMapTy> ImportLists(
ThinLTO.ModuleMap.size());
StringMap<FunctionImporter::ExportSetTy> ExportLists(
ThinLTO.ModuleMap.size());
StringMap<std::map<GlobalValue::GUID, GlobalValue::LinkageTypes>> ResolvedODR;
if (Conf.OptLevel > 0) {
// Compute "dead" symbols, we don't want to import/export these!
DenseSet<GlobalValue::GUID> GUIDPreservedSymbols;
for (auto &Res : GlobalResolutions) {
@ -869,13 +876,6 @@ Error LTO::runThinLTO(AddStreamFn AddStream, NativeObjectCache Cache,
auto DeadSymbols =
computeDeadSymbols(ThinLTO.CombinedIndex, GUIDPreservedSymbols);
StringMap<FunctionImporter::ImportMapTy> ImportLists(
ThinLTO.ModuleMap.size());
StringMap<FunctionImporter::ExportSetTy> ExportLists(
ThinLTO.ModuleMap.size());
StringMap<std::map<GlobalValue::GUID, GlobalValue::LinkageTypes>> ResolvedODR;
if (Conf.OptLevel > 0) {
ComputeCrossModuleImport(ThinLTO.CombinedIndex, ModuleToDefinedGVSummaries,
ImportLists, ExportLists, &DeadSymbols);