1  /* Common definition for ifunc selections optimized with SSSE3 and
       2     SSE4_2.
       3     All versions must be listed in ifunc-impl-list.c.
       4     Copyright (C) 2017-2023 Free Software Foundation, Inc.
       5     This file is part of the GNU C Library.
       6  
       7     The GNU C Library is free software; you can redistribute it and/or
       8     modify it under the terms of the GNU Lesser General Public
       9     License as published by the Free Software Foundation; either
      10     version 2.1 of the License, or (at your option) any later version.
      11  
      12     The GNU C Library is distributed in the hope that it will be useful,
      13     but WITHOUT ANY WARRANTY; without even the implied warranty of
      14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15     Lesser General Public License for more details.
      16  
      17     You should have received a copy of the GNU Lesser General Public
      18     License along with the GNU C Library; if not, see
      19     <https://www.gnu.org/licenses/>.  */
      20  
      21  #include <init-arch.h>
      22  
      23  extern __typeof (REDIRECT_NAME) OPTIMIZE (ia32) attribute_hidden;
      24  extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) attribute_hidden;
      25  extern __typeof (REDIRECT_NAME) OPTIMIZE (sse4_2) attribute_hidden;
      26  
      27  static inline void *
      28  IFUNC_SELECTOR (void)
      29  {
      30    const struct cpu_features* cpu_features = __get_cpu_features ();
      31  
      32    if (CPU_FEATURE_USABLE_P (cpu_features, SSE4_2))
      33      return OPTIMIZE (sse4_2);
      34  
      35    if (CPU_FEATURE_USABLE_P (cpu_features, SSSE3))
      36      return OPTIMIZE (ssse3);
      37  
      38    return OPTIMIZE (ia32);
      39  }