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| author | Alex Borcan <alexborcan@fb.com> | 2022-05-03 18:19:18 -0400 |
|---|---|---|
| committer | Jez Ng <jezng@fb.com> | 2022-05-03 18:19:18 -0400 |
| commit | afaa56df7a93f21cd1e49f7daa6a8970335744da (patch) | |
| tree | fb926c289d2de4101a6e408268f0bd3d1bf7028b /llvm/lib/MC/MCObjectFileInfo.cpp | |
| parent | b945b62cf35e1b45ffb9233958756743b2b5fd46 (diff) | |
| download | llvm-afaa56df7a93f21cd1e49f7daa6a8970335744da.zip llvm-afaa56df7a93f21cd1e49f7daa6a8970335744da.tar.gz llvm-afaa56df7a93f21cd1e49f7daa6a8970335744da.tar.bz2 | |
Implement support for __llvm_addrsig for MachO in llvm-mc
The __llvm_addrsig section is a section that the linker needs for safe icf.
This was not yet implemented for MachO - this is the implementation.
It has been tested with a safe deduplication implementation inside lld.
Reviewed By: MaskRay
Differential Revision: https://reviews.llvm.org/D123751
Diffstat (limited to 'llvm/lib/MC/MCObjectFileInfo.cpp')
| -rw-r--r-- | llvm/lib/MC/MCObjectFileInfo.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/MC/MCObjectFileInfo.cpp b/llvm/lib/MC/MCObjectFileInfo.cpp index 5bd3fcc..3ee8167 100644 --- a/llvm/lib/MC/MCObjectFileInfo.cpp +++ b/llvm/lib/MC/MCObjectFileInfo.cpp @@ -182,6 +182,9 @@ void MCObjectFileInfo::initMachOMCObjectFileInfo(const Triple &T) { MachO::S_THREAD_LOCAL_VARIABLE_POINTERS, SectionKind::getMetadata()); + AddrSigSection = Ctx->getMachOSection("__DATA", "__llvm_addrsig", 0, + SectionKind::getData()); + // Exception Handling. LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0, SectionKind::getReadOnlyWithRel()); |