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-rw-r--r--sysdeps/tile/tilepro/strrchr.c73
1 files changed, 0 insertions, 73 deletions
diff --git a/sysdeps/tile/tilepro/strrchr.c b/sysdeps/tile/tilepro/strrchr.c
deleted file mode 100644
index b30d259773..0000000000
--- a/sysdeps/tile/tilepro/strrchr.c
+++ /dev/null
@@ -1,73 +0,0 @@
-/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library. If not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <string.h>
-#include <stdint.h>
-
-char *
-strrchr (const char *s, int c)
-{
- /* Get an aligned pointer. */
- const uintptr_t s_int = (uintptr_t) s;
- const uint32_t *p = (const uint32_t *) (s_int & -4);
-
- /* Create four copies of the byte for which we are looking. */
- const uint32_t goal = 0x01010101 * (uint8_t) c;
-
- /* Read the first aligned word, but force bytes before the string to
- match neither zero nor goal (we make sure the high bit of each
- byte is 1, and the low 7 bits are all the opposite of the goal
- byte). Note that this shift count expression works because we
- know shift counts are taken mod 32. */
- const uint32_t before_mask = (1 << (s_int << 3)) - 1;
- uint32_t v = (*p | before_mask) ^ (goal & __insn_shrib (before_mask, 1));
- const char *found = NULL;
- uint32_t zero_matches, goal_matches;
- while (1)
- {
- /* Look for a terminating '\0'. */
- zero_matches = __insn_seqb (v, 0);
-
- /* Look for the goal byte. */
- goal_matches = __insn_seqb (v, goal);
-
- /* If we found the goal, record the last offset. */
- if (__builtin_expect (goal_matches != 0, 0))
- {
- if (__builtin_expect (zero_matches != 0, 0))
- {
- /* Clear any goal after the first zero. */
- int first_nul = __insn_ctz (zero_matches);
- /* The number of top bits we need to clear is
- 32 - (first_nul + 8). */
- int shift_amt = (24 - first_nul);
- goal_matches <<= shift_amt;
- goal_matches >>= shift_amt;
- }
- if (__builtin_expect (goal_matches != 0, 1))
- found = ((char *) p) + 3 - (__insn_clz (goal_matches) >> 3);
- }
-
- if (__builtin_expect (zero_matches != 0, 0))
- return (char *) found;
-
- v = *++p;
- }
-}
-weak_alias (strrchr, rindex)
-libc_hidden_builtin_def (strrchr)