gcc/config/nds32/nds32-fp-as-gp.c

   1 /* The fp-as-gp pass of Andes NDS32 cpu for GNU compiler
   2    Copyright (C) 2012-2017 Free Software Foundation, Inc.
   3    Contributed by Andes Technology Corporation.
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published
   9    by the Free Software Foundation; either version 3, or (at your
  10    option) any later version.
  11
  12    GCC is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  15    License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GCC; see the file COPYING3.  If not see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21 /* ------------------------------------------------------------------------ */
  22
  23 #include "config.h"
  24 #include "system.h"
  25 #include "coretypes.h"
  26 #include "backend.h"
  27
  28 /* ------------------------------------------------------------------------ */
  29
  30 /* Function to determine whether it is worth to do fp_as_gp optimization.
  31    Return 0: It is NOT worth to do fp_as_gp optimization.
  32    Return 1: It is APPROXIMATELY worth to do fp_as_gp optimization.
  33    Note that if it is worth to do fp_as_gp optimization,
  34    we MUST set FP_REGNUM ever live in this function.  */
  35 int
  36 nds32_fp_as_gp_check_available (void)
  37 {
  38   /* By default we return 0.  */
  39   return 0;
  40 }
  41
  42 /* ------------------------------------------------------------------------ */