shithub: scc

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Optimize lookup()

--- a/symbol.c

+++ b/symbol.c

@@ -66,9 +66,9 @@

 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));

 		sym->next = head;

@@ -75,11 +75,10 @@

 		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;

 	}

-- 

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