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Re-arranged code a bit so that gcc can optimize this a bit better.

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This change results in better code on the i386, m68k, & ns32k, and
equivalent code on the sparc.
This commit is contained in:
jtc 1996-06-01 02:24:29 +00:00
parent fb600c331a
commit 17c5522d18
2 changed files with 23 additions and 20 deletions
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22
lib/libc/quad/divdi3.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: divdi3.c,v 1.2 1995/02/27 17:29:52 cgd Exp $ */
/* $NetBSD: divdi3.c,v 1.3 1996/06/01 02:24:29 jtc Exp $ */
/*-
* Copyright (c) 1992, 1993
@ -41,7 +41,7 @@
#if 0
static char sccsid[] = "@(#)divdi3.c 8.1 (Berkeley) 6/4/93";
#else
static char rcsid[] = "$NetBSD: divdi3.c,v 1.2 1995/02/27 17:29:52 cgd Exp $";
static char rcsid[] = "$NetBSD: divdi3.c,v 1.3 1996/06/01 02:24:29 jtc Exp $";
#endif
#endif /* LIBC_SCCS and not lint */
@ -56,16 +56,18 @@ __divdi3(a, b)
quad_t a, b;
{
u_quad_t ua, ub, uq;
int neg;
int neg = 0;
ua = a;
ub = b;
if (a < 0)
ua = -(u_quad_t)a, neg = 1;
else
ua = a, neg = 0;
ua = -ua, neg ^= 1;
if (b < 0)
ub = -(u_quad_t)b, neg ^= 1;
else
ub = b;
ub = -ub, neg ^= 1;
uq = __qdivrem(ua, ub, (u_quad_t *)0);
return (neg ? -uq : uq);
if (neg)
uq = - uq;
return uq;
}

21
lib/libc/quad/moddi3.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: moddi3.c,v 1.2 1995/02/27 17:30:35 cgd Exp $ */
/* $NetBSD: moddi3.c,v 1.3 1996/06/01 02:24:31 jtc Exp $ */
/*-
* Copyright (c) 1992, 1993
@ -41,7 +41,7 @@
#if 0
static char sccsid[] = "@(#)moddi3.c 8.1 (Berkeley) 6/4/93";
#else
static char rcsid[] = "$NetBSD: moddi3.c,v 1.2 1995/02/27 17:30:35 cgd Exp $";
static char rcsid[] = "$NetBSD: moddi3.c,v 1.3 1996/06/01 02:24:31 jtc Exp $";
#endif
#endif /* LIBC_SCCS and not lint */
@ -58,16 +58,17 @@ __moddi3(a, b)
quad_t a, b;
{
u_quad_t ua, ub, ur;
int neg;
int neg = 0;
ua = a;
ub = b;
if (a < 0)
ua = -(u_quad_t)a, neg = 1;
else
ua = a, neg = 0;
ua = -ua, neg ^= 1;
if (b < 0)
ub = -(u_quad_t)b, neg ^= 1;
else
ub = b;
ub = -ub, neg ^= 1;
(void)__qdivrem(ua, ub, &ur);
return (neg ? -ur : ur);
if (neg)
ur = -ur;
return (ur);
}