forked from OSchip/llvm-project
a8b2f7c0d7
Bitsets, and the compiler features they rely on (vtable opt, CFI), only have visibility within the LTO'd part of the linkage unit. Therefore, only enable these features for classes with hidden LTO visibility. This notion is based on object file visibility or (on Windows) dllimport/dllexport attributes. We provide the [[clang::lto_visibility_public]] attribute to override the compiler's LTO visibility inference in cases where the class is defined in the non-LTO'd part of the linkage unit, or where the ABI supports calling classes derived from abstract base classes with hidden visibility in other linkage units (e.g. COM on Windows). If the cross-DSO CFI mode is enabled, bitset checks are emitted even for classes with public LTO visibility, as that mode uses a separate mechanism to cause bitsets to be exported. This mechanism replaces the whole-program-vtables blacklist, so remove the -fwhole-program-vtables-blacklist flag. Because __declspec(uuid()) now implies [[clang::lto_visibility_public]], the support for the special attr:uuid blacklist entry is removed. Differential Revision: http://reviews.llvm.org/D18635 llvm-svn: 267784 |
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| .. | ||
| Action.cpp | ||
| CMakeLists.txt | ||
| Compilation.cpp | ||
| CrossWindowsToolChain.cpp | ||
| Driver.cpp | ||
| DriverOptions.cpp | ||
| InputInfo.h | ||
| Job.cpp | ||
| MSVCToolChain.cpp | ||
| MinGWToolChain.cpp | ||
| Multilib.cpp | ||
| Phases.cpp | ||
| SanitizerArgs.cpp | ||
| Tool.cpp | ||
| ToolChain.cpp | ||
| ToolChains.cpp | ||
| ToolChains.h | ||
| Tools.cpp | ||
| Tools.h | ||
| Types.cpp | ||