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[Bug string/20115] Extra alignment in memset-vec-unaligned-erms.S


https://sourceware.org/bugzilla/show_bug.cgi?id=20115

--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=eb2c88c7c83901737db5c4de7dc4470c5681b2cb

commit eb2c88c7c83901737db5c4de7dc4470c5681b2cb
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Thu May 19 08:49:45 2016 -0700

    Remove alignments on jump targets in memset

    X86-64 memset-vec-unaligned-erms.S aligns many jump targets, which
    increases code sizes, but not necessarily improve performance.  As
    memset benchtest data of align vs no align on various Intel and AMD
    processors

    https://sourceware.org/bugzilla/attachment.cgi?id=9277

    shows that aligning jump targets isn't necessary.

        [BZ #20115]
        * sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S (__memset):
        Remove alignments on jump targets.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                                          |    6 +++
 .../x86_64/multiarch/memset-vec-unaligned-erms.S   |   37 +++-----------------
 2 files changed, 11 insertions(+), 32 deletions(-)

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