string: Use builtins for ffs and ffsll

It allows to remove a lot of arch-specific implementations.

Checked on x86_64, aarch64, powerpc64.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>

1 files changed, 0 insertions, 46 deletions

diff --git a/sysdeps/m68k/ffs.c b/sysdeps/m68k/ffs.c
deleted file mode 100644
index 496ceb8941..0000000000
--- a/sysdeps/m68k/ffs.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/* ffs -- find first set bit in a word, counted from least significant end.
-   For mc68020, mc68030, mc68040.
-   This file is part of the GNU C Library.
-   Copyright (C) 1991-2024 Free Software Foundation, Inc.
-
-   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
-   <https://www.gnu.org/licenses/>.  */
-
-#define ffsl __something_else
-#include <string.h>
-
-#undef	ffs
-
-#if	defined (__GNUC__) && defined (__mc68020__)
-
-int
-__ffs (int x)
-{
-  int cnt;
-
-  asm ("bfffo %1{#0:#0},%0" : "=d" (cnt) : "dm" (x & -x));
-
-  return 32 - cnt;
-}
-weak_alias (__ffs, ffs)
-libc_hidden_def (__ffs)
-libc_hidden_builtin_def (ffs)
-#undef ffsl
-weak_alias (__ffs, ffsl)
-
-#else
-
-#include <string/ffs.c>
-
-#endif