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[Bug string/20115] New: Extra alignment in memset-vec-unaligned-erms.S
- From: "hjl.tools at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Wed, 18 May 2016 14:20:02 +0000
- Subject: [Bug string/20115] New: Extra alignment in memset-vec-unaligned-erms.S
- Auto-submitted: auto-generated
https://sourceware.org/bugzilla/show_bug.cgi?id=20115
Bug ID: 20115
Summary: Extra alignment in memset-vec-unaligned-erms.S
Product: glibc
Version: 2.24
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: string
Assignee: unassigned at sourceware dot org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
Target: x86-64
Created attachment 9277
--> https://sourceware.org/bugzilla/attachment.cgi?id=9277&action=edit
memset benchtest data of align vs no align
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 shows that aligning jump targets isn't necessary.
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