1  /* Common definition for memmove/memmove_chk ifunc selections.
       2     All versions must be listed in ifunc-impl-list.c.
       3     Copyright (C) 2017-2023 Free Software Foundation, Inc.
       4     This file is part of the GNU C Library.
       5  
       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.
      10  
      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.
      15  
      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     <https://www.gnu.org/licenses/>.  */
      19  
      20  #include <init-arch.h>
      21  
      22  extern __typeof (REDIRECT_NAME) OPTIMIZE (ia32) attribute_hidden;
      23  extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2_unaligned)
      24    attribute_hidden;
      25  extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) attribute_hidden;
      26  extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3_rep) attribute_hidden;
      27  
      28  static inline void *
      29  IFUNC_SELECTOR (void)
      30  {
      31    const struct cpu_features* cpu_features = __get_cpu_features ();
      32  
      33    if (CPU_FEATURES_ARCH_P (cpu_features, Fast_Unaligned_Load))
      34      return OPTIMIZE (sse2_unaligned);
      35  
      36    if (CPU_FEATURE_USABLE_P (cpu_features, SSSE3))
      37      {
      38        if (CPU_FEATURES_ARCH_P (cpu_features, Fast_Rep_String))
      39  	return OPTIMIZE (ssse3_rep);
      40  
      41        return OPTIMIZE (ssse3);
      42      }
      43  
      44    return OPTIMIZE (ia32);
      45  }