1  /* Common definition for libmathvec ifunc selections optimized with
       2     AVX512.
       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  #undef PASTER2
      23  #define PASTER2(x,y)	x##_##y
      24  
      25  extern void REDIRECT_NAME (void);
      26  extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_wrapper) attribute_hidden;
      27  extern __typeof (REDIRECT_NAME) OPTIMIZE (knl) attribute_hidden;
      28  extern __typeof (REDIRECT_NAME) OPTIMIZE (skx) attribute_hidden;
      29  
      30  static inline void *
      31  IFUNC_SELECTOR (void)
      32  {
      33    const struct cpu_features* cpu_features = __get_cpu_features ();
      34  
      35    if (!CPU_FEATURES_ARCH_P (cpu_features, MathVec_Prefer_No_AVX512))
      36      {
      37        if (CPU_FEATURE_USABLE_P (cpu_features, AVX512DQ))
      38  	return OPTIMIZE (skx);
      39  
      40        if (CPU_FEATURE_USABLE_P (cpu_features, AVX512F))
      41  	return OPTIMIZE (knl);
      42      }
      43  
      44    return OPTIMIZE (avx2_wrapper);
      45  }