diff options
Diffstat (limited to 'llvm/lib/LTO/ThinLTOCodeGenerator.cpp')
| -rw-r--r-- | llvm/lib/LTO/ThinLTOCodeGenerator.cpp | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/llvm/lib/LTO/ThinLTOCodeGenerator.cpp b/llvm/lib/LTO/ThinLTOCodeGenerator.cpp index b5ac5a77e9c..b2e34c54428 100644 --- a/llvm/lib/LTO/ThinLTOCodeGenerator.cpp +++ b/llvm/lib/LTO/ThinLTOCodeGenerator.cpp @@ -621,6 +621,18 @@ static void internalizeAndPromoteInIndex( thinLTOInternalizeAndPromoteInIndex(Index, isExported); } +static void computeDeadSymbolsInIndex( + ModuleSummaryIndex &Index, + const DenseSet<GlobalValue::GUID> &GUIDPreservedSymbols) { + // We have no symbols resolution available. And can't do any better now in the + // case where the prevailing symbol is in a native object. It can be refined + // with linker information in the future. + auto isPrevailing = [&](GlobalValue::GUID G) { + return PrevailingType::Unknown; + }; + computeDeadSymbols(Index, GUIDPreservedSymbols, isPrevailing); +} + /** * Perform promotion and renaming of exported internal functions. * Index is updated to reflect linkage changes from weak resolution. @@ -639,7 +651,7 @@ void ThinLTOCodeGenerator::promote(Module &TheModule, PreservedSymbols, Triple(TheModule.getTargetTriple())); // Compute "dead" symbols, we don't want to import/export these! - computeDeadSymbols(Index, GUIDPreservedSymbols); + computeDeadSymbolsInIndex(Index, GUIDPreservedSymbols); // Generate import/export list StringMap<FunctionImporter::ImportMapTy> ImportLists(ModuleCount); @@ -678,7 +690,7 @@ void ThinLTOCodeGenerator::crossModuleImport(Module &TheModule, PreservedSymbols, Triple(TheModule.getTargetTriple())); // Compute "dead" symbols, we don't want to import/export these! - computeDeadSymbols(Index, GUIDPreservedSymbols); + computeDeadSymbolsInIndex(Index, GUIDPreservedSymbols); // Generate import/export list StringMap<FunctionImporter::ImportMapTy> ImportLists(ModuleCount); @@ -755,7 +767,7 @@ void ThinLTOCodeGenerator::internalize(Module &TheModule, Index.collectDefinedGVSummariesPerModule(ModuleToDefinedGVSummaries); // Compute "dead" symbols, we don't want to import/export these! - computeDeadSymbols(Index, GUIDPreservedSymbols); + computeDeadSymbolsInIndex(Index, GUIDPreservedSymbols); // Generate import/export list StringMap<FunctionImporter::ImportMapTy> ImportLists(ModuleCount); @@ -901,7 +913,7 @@ void ThinLTOCodeGenerator::run() { computeGUIDPreservedSymbols(PreservedSymbols, TMBuilder.TheTriple); // Compute "dead" symbols, we don't want to import/export these! - computeDeadSymbols(*Index, GUIDPreservedSymbols); + computeDeadSymbolsInIndex(*Index, GUIDPreservedSymbols); // Collect the import/export lists for all modules from the call-graph in the // combined index. |
