1 /* wcschr with SSE2, without using bsf instructions
2 Copyright (C) 2011-2017 Free Software Foundation, Inc.
3 Contributed by Intel Corporation.
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the 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 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
23 # define CFI_PUSH(REG) \
24 cfi_adjust_cfa_offset (4); \
25 cfi_rel_offset (REG, 0)
27 # define CFI_POP(REG) \
28 cfi_adjust_cfa_offset (-4); \
31 # define PUSH(REG) pushl REG; CFI_PUSH (REG)
32 # define POP(REG) popl REG; CFI_POP (REG)
42 movd STR2(%esp), %xmm1
45 punpckldq %xmm1, %xmm1
47 punpckldq %xmm1, %xmm1
79 jz L(unaligned_no_match)
87 jz L(match_higth_case2)
98 L(unaligned_no_match):
107 /* Loop start on aligned string. */
157 jz L(match_higth_case2)
171 L(match_higth_case2):
175 jnz L(match_case2_12)
189 jz L(match_higth_case1)
197 L(match_higth_case1):