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| author | Petr Hosek <phosek@google.com> | 2021-01-31 22:42:35 -0800 |
|---|---|---|
| committer | Petr Hosek <phosek@google.com> | 2021-02-16 14:23:40 -0800 |
| commit | 16af97393346ad636298605930a8b503a55eb40a (patch) | |
| tree | 335d13493c66fe7bf73914ec5707e29024fd3a8e /llvm/lib/MC/MCSectionELF.cpp | |
| parent | 76609f17ced61f031a1fc77b2e0ed4aa9833917b (diff) | |
| download | llvm-16af97393346ad636298605930a8b503a55eb40a.zip llvm-16af97393346ad636298605930a8b503a55eb40a.tar.gz llvm-16af97393346ad636298605930a8b503a55eb40a.tar.bz2 | |
[MC][ELF] Support for zero flag section groups
This change introduces support for zero flag ELF section groups to LLVM.
LLVM already supports COMDAT sections, which in ELF are a special type
of ELF section groups. These are generally useful to enable linker GC
where you want a group of sections to always travel together, that is to
be either retained or discarded as a whole, but without the COMDAT
semantics. Other ELF assemblers already support zero flag ELF section
groups and this change helps us reach feature parity.
Differential Revision: https://reviews.llvm.org/D95851
Diffstat (limited to 'llvm/lib/MC/MCSectionELF.cpp')
| -rw-r--r-- | llvm/lib/MC/MCSectionELF.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/MC/MCSectionELF.cpp b/llvm/lib/MC/MCSectionELF.cpp index 300f209..d188765 100644 --- a/llvm/lib/MC/MCSectionELF.cpp +++ b/llvm/lib/MC/MCSectionELF.cpp @@ -171,8 +171,9 @@ void MCSectionELF::PrintSwitchToSection(const MCAsmInfo &MAI, const Triple &T, if (Flags & ELF::SHF_GROUP) { OS << ","; - printName(OS, Group->getName()); - OS << ",comdat"; + printName(OS, Group.getPointer()->getName()); + if (isComdat()) + OS << ",comdat"; } if (Flags & ELF::SHF_LINK_ORDER) { |