[Bug ld/32387] ppc64 TLS optimization bug when built with -fno-plt

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=32387

--- Comment #11 from Sourceware Commits <cvs-commit at gcc dot gnu.org> ---
The binutils-2_42-branch branch has been updated by Alan Modra
<amodra@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=758a2290dbdf0d6d6c148c6cf25b2bcfd7a5b84f

commit 758a2290dbdf0d6d6c148c6cf25b2bcfd7a5b84f
Author: Alan Modra <amodra@gmail.com>
Date:   Tue Nov 26 08:24:19 2024 +1030

    PR32387 ppc64 TLS optimization bug with -fno-plt code

    The inline plt code emitted by gcc is incompatible with the
    linker/ld.so --tls-get-addr-optimize scheme.  This is the runtime
    optimisation where the first call to __tls_get_addr results in
    __tls_get_addr updating the tls_index pair, then the special linker
    stub using that to short-circuit second and subsequent calls for a
    given tls symbol.  Enabled by default when the linker sees
    __tls_get_addr_opt is preseent, and enabled in ld.so when DT_PPC64_OPT
    has PPC64_OPT_TLS set.  Note that this is distinct from link-time tls
    optimisation.

            PR 32387
            * elf64-ppc.c (ppc64_elf_check_relocs): Disable tls_get_addr_opt
            on detecting inline plt calls to __tls_get_addr.

    (cherry picked from commit 1686dc7079f1c03bdaffd2f779b92aa2b7ad97b5)

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