This change introduces support for zero flag ELF section groups to lld.
lld 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 linkers already support zero flag ELF section
groups and this change helps us reach feature parity.
Details
Details
Diff Detail
Diff Detail
- Repository
- rG LLVM Github Monorepo
Event Timeline
lld/test/ELF/gc-sections-group-debug.s | ||
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11 | This tests a real world use case, .debug_types which has the GRP_COMDAT flag. You can add another section to gc-sections-group.s |
lld/ELF/InputFiles.cpp | ||
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621 | That makes sense, I've renamed this to keepGroup. |
This comment was removed by mehdi_amini.
I wonder whether isNew is a bit misnamed nowadays. Perhaps it should be renamed to keepGroup or something like that. Waht do you think?