54fb3ca96e
Imported functions and variable get the visibility from the module supplying the definition. However, non-imported definitions do not get the visibility from (ELF) the most constraining visibility among all modules (Mach-O) the visibility of the prevailing definition. This patch * adds visibility bits to GlobalValueSummary::GVFlags * computes the result visibility and propagates it to all definitions Protected/hidden can imply dso_local which can enable some optimizations (this is stronger than GVFlags::DSOLocal because the implied dso_local can be leveraged for ELF -shared while default visibility dso_local has to be cleared for ELF -shared). Note: we don't have summaries for declarations, so for ELF if a declaration has the most constraining visibility, the result visibility may not be that one. Differential Revision: https://reviews.llvm.org/D92900 |
||
|---|---|---|
| .. | ||
| BitReader.cpp | ||
| BitcodeAnalyzer.cpp | ||
| BitcodeReader.cpp | ||
| CMakeLists.txt | ||
| MetadataLoader.cpp | ||
| MetadataLoader.h | ||
| ValueList.cpp | ||
| ValueList.h | ||