JehanneOS/mksh
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lesson learned from http://k1024.org/~iusty/blog/entry/perf-null/ – add -DMKSH_SMALL_BUT_FAST which gives more speed (8/20K less cycles, 5/9K less insns, 1.8/2.4k less branches, 65/275 less branch misses) on Debian/amd64 (klibc-static/eglibc) at cost of 0/2 more page faults and 6K/6K more text size

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tg
2012-07-01 15:55:00 +00:00
parent 798cfdc982
commit 4778a2a62f
7 changed files with 19 additions and 18 deletions
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4
lex.c
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@@ -23,7 +23,7 @@
#include "sh.h"
__RCSID("$MirOS: src/bin/mksh/lex.c,v 1.164 2012/06/28 20:05:07 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/lex.c,v 1.165 2012/07/01 15:54:55 tg Exp $");
/*
* states while lexing word
@@ -131,7 +131,7 @@ short subshell_nesting_level = 0;
return (cev); \
}
#ifdef MKSH_SMALL
#if defined(MKSH_SMALL) && !defined(MKSH_SMALL_BUT_FAST)
static int getsc(void);
static int