[PATCH v2] elf: Cache full internal symbol table for relocatable input

[H.J. Lu]

On Sat, Oct 11, 2025 at 9:08 AM Sam James <sam@gentoo.org> wrote:
>
> "H.J. Lu" <hjl.tools@gmail.com> writes:
>
> > Add bfd_elf_get_elf_syms_cached to cache internal symbol table for
> > relocatable input and use the internal symbol table cache for both local
> > and global symbols to avoid swapping in the same symbol table repeatedly
> > for --gc-sections.  This improves linker --gc-sections speed by ~2x for
> > PR ld/33530.
> >
> > elf_link_input_bfd is updated to not to pass preallocated buffers to
> > bfd_elf_get_elf_syms_cache.
>
> All tests pass now for me, including:
>
>                 === libctf Summary ===
>
> # of expected passes            39
> # of unsupported tests          1
>
> I'll test it more in the wild tonight and tomorrow.

Here is the v2 patch to keep bfd_elf_get_elf_syms interface unchanged.


-- 
H.J.
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