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[Bug ld/22374] Unnecessary PLT entries


From: cvs-commit at gcc dot gnu.org
Subject: [Bug ld/22374] Unnecessary PLT entries
Date: Wed, 01 Nov 2017 08:19:10 +0000

https://sourceware.org/bugzilla/show_bug.cgi?id=22374

--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by Alan Modra <address@hidden>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=3988aed54acce3c682a877b51b0e09cce1079e81

commit 3988aed54acce3c682a877b51b0e09cce1079e81
Author: Alan Modra <address@hidden>
Date:   Tue Oct 31 22:13:21 2017 +1030

    PR22374, PowerPC unnecessary PLT entries

    We don't need a PLT entry when function pointer initialization in a
    read/write section is the only reference to a given function symbol.
    This patch prevents the unnecessary PLT entry, and ensures no dynamic
    relocs are emitted when UNDEFWEAK_NO_DYNAMIC_RELOC says so.

    bfd/
        PR 22374
        * elf32-ppc.c (ppc_elf_adjust_dynamic_symbol): Don't create a plt
        entry when just a dynamic reloc can serve.  Ensure no dynamic
        relocations when UNDEFWEAK_NO_DYNAMIC_RELOC by setting non_got_ref.
        Expand and move the non_got_ref comment.
        * elf64-ppc.c (ppc64_elf_adjust_dynamic_symbol): Likewise.
    ld/
        * testsuite/ld-powerpc/ambiguousv2.d: Remove FIXME.

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