1 /* Optimized version of the standard strcmp() function.
2 This file is part of the GNU C Library.
3 Copyright (C) 2000 Free Software Foundation, Inc.
4 Contributed by Dan Pop <Dan.Pop@cern.ch>.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public License as
8 published by the Free Software Foundation; either version 2 of the
9 License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Library General Public License for more details.
16 You should have received a copy of the GNU Library General Public
17 License along with the GNU C Library; see the file COPYING.LIB. If not,
18 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* Return: the result of the comparison
27 Unlike memcmp(), this function is optimized for mismatches within the
28 first few characters. */
42 alloc saved_pfs = ar.pfs, 2, 0, 0, 0
46 cmp.eq p6, p0 = r0, r0 // set p6
48 cmp.ne.and p6, p0 = val1, r0
49 cmp.ne.and p6, p0 = val2, r0
50 cmp.eq.and p6, p0 = val1, val2
51 (p6) br.cond.sptk .loop
53 mov ar.pfs = saved_pfs