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[Bug string/20115] Extra alignment in memset-vec-unaligned-erms.S
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Thu, 19 May 2016 15:50:54 +0000
- Subject: [Bug string/20115] Extra alignment in memset-vec-unaligned-erms.S
- Auto-submitted: auto-generated
- References: <bug-20115-131 at http dot sourceware dot org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=20115
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The branch, master has been updated
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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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