git: libc -- Remove assembler i386 strlen() routine.
commit c3ad51703ce506c5c3b1b7f80a8ca78c37aba2b4
Author: Venkatesh Srinivas <me@endeavour.zapto.org>
Date: Sun Nov 27 09:57:36 2011 -0800
libc -- Remove assembler i386 strlen() routine.
On a number of processors, it is slower than the obvious C version.
(400,000,000 loops, times in sec)
On a 2.66 GHz Core 2:
asm C
10-by string 22.9 9.5
68-by string 77.2 19.8
175-by string 173.7 40.6
On a 2.0 GHz Athlon64 3000+:
asm C
10-by string 11.3 9.9
68-by string 34.7 34.7
175-by string 78.7 77.6
On a 2.2 GHz Core i7 (nehalem):
asm C
10-by string 13.4 5.2
68-by string 33.8 29.5
175-by string 71.6 67.4
Summary of changes:
lib/libc/i386/string/Makefile.inc | 3 +-
lib/libc/i386/string/strlen.S | 55 -------------------------------------
2 files changed, 1 insertions(+), 57 deletions(-)
delete mode 100644 lib/libc/i386/string/strlen.S
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/c3ad51703ce506c5c3b1b7f80a8ca78c37aba2b4
--
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