scc

Simple C99 Compiler
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commit b3477280fbd5d5ca483d13ff771be76d98ca2b49
parent dd9d39f1f5a09924ab111b97e64d144075d898cd
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Sun,  9 Mar 2014 20:29:16 +0100

Optimize lookup()

Diffstat:
symbol.c | 9++++-----
1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/symbol.c b/symbol.c @@ -66,8 +66,8 @@ struct symbol * lookup(register const char *s, signed char ns) { register struct symbol *sym; - static unsigned char key, l; - + static unsigned char key; + register char *t; if (s == NULL) { sym = xcalloc(1, sizeof(*sym)); @@ -75,11 +75,10 @@ lookup(register const char *s, signed char ns) return sym; } - l = strlen(s); key = hash(s) & NR_SYM_HASH - 1; - for (sym = htab[key]; sym; sym = sym->hash) { - if (ns == sym->ns && !memcmp(sym->name, s, l)) + t = sym->name; + if (ns == sym->ns && *t == *s && !strcmp(t, s)) return sym; }