git: libc -- Remove assembler i386 strlen() routine.

[Venkatesh Srinivas]

commit c3ad51703ce506c5c3b1b7f80a8ca78c37aba2b4
Author: Venkatesh Srinivas <me at 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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