Fangrui Song 2174d3b961 [LTO] Add SelectionKind to IRSymtab and use it in ld.lld/LLVMgold ... In PGO, a C++ external linkage function `foo` has a private counter `__profc_foo` and a private `__profd_foo` in a `comdat nodeduplicate`. A `__attribute__((weak))` function `foo` has a weak hidden counter `__profc_foo` and a private `__profd_foo` in a `comdat nodeduplicate`. In `ld.lld a.o b.o`, say a.o defines an external linkage `foo` and b.o defines a weak `foo`. Currently we treat `comdat nodeduplicate` as `comdat any`, ld.lld will incorrectly consider `b.o:__profc_foo` non-prevailing. In the worst case when `b.o:__profd_foo` is retained and `b.o:__profc_foo` isn't, there will be dangling reference causing an `undefined hidden symbol` error. Add SelectionKind to `Comdat` in IRSymtab and let linkers ignore nodeduplicate comdat. Differential Revision: https://reviews.llvm.org/D106228		2021-07-20 13:22:00 -07:00
..
Archive.h	[NFC][libObject] clang-format Archive{.h,.cpp}	2021-05-27 16:48:40 -07:00
ArchiveWriter.h
Binary.h
COFF.h	[NFC][object] Change the input parameter of the method isDebugSection.	2021-05-26 08:47:53 +00:00
COFFImportFile.h
COFFModuleDefinition.h
CVDebugRecord.h
Decompressor.h
ELF.h
ELFObjectFile.h	[ELF] getRelocatedSection: remove the check for ET_REL object file	2021-06-07 13:17:00 -07:00
ELFTypes.h	[LLD][LLVM] CG Graph profile using relocations	2021-06-24 09:09:33 -07:00
Error.h
FaultMapParser.h
IRObjectFile.h
IRSymtab.h	[LTO] Add SelectionKind to IRSymtab and use it in ld.lld/LLVMgold	2021-07-20 13:22:00 -07:00
MachO.h	[NFC][object] Change the input parameter of the method isDebugSection.	2021-05-26 08:47:53 +00:00
MachOUniversal.h
MachOUniversalWriter.h
Minidump.h
ModuleSymbolTable.h
ObjectFile.h	[ELF] getRelocatedSection: remove the check for ET_REL object file	2021-06-07 13:17:00 -07:00
RelocationResolver.h
StackMapParser.h
SymbolicFile.h	Replace uses of std::iterator with explicit using	2021-04-12 10:47:14 -07:00
SymbolSize.h
TapiFile.h	[TextAPI] move source code files out of subdirectory, NFC	2021-04-05 10:24:42 -07:00
TapiUniversal.h	Reland "[llvm] llvm-tapi-diff"	2021-06-09 21:17:34 -07:00
Wasm.h	[WebAssembly] Rename event to tag	2021-06-17 20:34:19 -07:00
WindowsMachineFlag.h
WindowsResource.h
XCOFFObjectFile.h	[llvm-readobj][XCOFF] Add support for printing the String Table.	2021-07-05 04:16:58 +00:00