[Bug ld/20006] Linking gcc and gold with ld.bfd with compressed debug sections fails on final close

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=20006

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at sourceware dot org   |hjl.tools at gmail dot 
com
   Target Milestone|---                         |2.27

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
It was caused by

commit 4a539596f5d54d3116c5fdebd8be56998757288b
Author: H.J. Lu <address@hidden>
Date:   Tue Feb 2 08:14:43 2016 -0800

    Store estimated istrances in compressed_size

    elf_x86_64_convert_load is very time consuming since it is called on
    each input section and has a loop over input text sections to estimate
    the branch distrance.  We can store the estimated distrances in the
    compressed_size field of the output section, which is only used to
    decompress the compressed input section.

    Before the patch, linking clang 3.9 takes 52 seconds.  After the patch,
    it only takes 2.5 seconds.

        PR ld/19542
        * elf64-x86-64.c (elf_x86_64_convert_load): Store the estimated
        distrances in the compressed_size field of the output section.

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