[Bug ld/19542] Performance penalty when linking chromium executable

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=19542

--- Comment #11 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by H.J. Lu <address@hidden>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=4a539596f5d54d3116c5fdebd8be56998757288b

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.

-- 
You are receiving this mail because:
You are on the CC list for the bug.