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PR/35535 CVS commit: src/common/lib/libc/arch/x86_64/string

The following reply was made to PR port-amd64/35535; it has been noted by GNATS.

From: David Laight <>
Subject: PR/35535 CVS commit: src/common/lib/libc/arch/x86_64/string
Date: Sun, 22 Nov 2009 17:25:48 +0000

 Module Name:   src
 Committed By:  dsl
 Date:          Sun Nov 22 17:25:47 UTC 2009
 Modified Files:
        src/common/lib/libc/arch/x86_64/string: bcopy.S
 Log Message:
 Align to the destination buffer.
 This probably costs 1 clock (on modern cpus) in the normal case.
 But gives a big benefit when the destination is misaligned.
 In particular when the source has the same misalignment - although
 that may not be a gain on Nehalem!
 Fixes PR/35535
 To generate a diff of this commit:
 cvs rdiff -u -r1.3 -r1.4 src/common/lib/libc/arch/x86_64/string/bcopy.S
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

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