gcc/config/loongarch/loongarch-tune.h

   1 /* Definitions for microarchitecture-related data structures.
   2    Copyright (C) 2021-2025 Free Software Foundation, Inc.
   3    Contributed by Loongson Ltd.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC 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
  15 GNU General Public 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 #ifndef LOONGARCH_TUNE_H
  22 #define LOONGARCH_TUNE_H
  23
  24 #include "loongarch-def-array.h"
  25
  26 /* RTX costs of various operations on the different architectures.  */
  27 struct loongarch_rtx_cost_data
  28 {
  29   unsigned short fp_add;
  30   unsigned short fp_mult_sf;
  31   unsigned short fp_mult_df;
  32   unsigned short fp_div_sf;
  33   unsigned short fp_div_df;
  34   unsigned short int_mult_si;
  35   unsigned short int_mult_di;
  36   unsigned short int_div_si;
  37   unsigned short int_div_di;
  38   unsigned short movcf2gr;
  39   unsigned short movgr2cf;
  40   unsigned short branch_cost;
  41   unsigned short memory_latency;
  42
  43   /* Default RTX cost initializer, implemented in loongarch-def.cc.  */
  44   loongarch_rtx_cost_data ();
  45
  46   loongarch_rtx_cost_data fp_add_ (unsigned short _fp_add)
  47   {
  48     fp_add = _fp_add;
  49     return *this;
  50   }
  51
  52   loongarch_rtx_cost_data fp_mult_sf_ (unsigned short _fp_mult_sf)
  53   {
  54     fp_mult_sf = _fp_mult_sf;
  55     return *this;
  56   }
  57
  58   loongarch_rtx_cost_data fp_mult_df_ (unsigned short _fp_mult_df)
  59   {
  60     fp_mult_df = _fp_mult_df;
  61     return *this;
  62   }
  63
  64   loongarch_rtx_cost_data fp_div_sf_ (unsigned short _fp_div_sf)
  65   {
  66     fp_div_sf = _fp_div_sf;
  67     return *this;
  68   }
  69
  70   loongarch_rtx_cost_data fp_div_df_ (unsigned short _fp_div_df)
  71   {
  72     fp_div_df = _fp_div_df;
  73     return *this;
  74   }
  75
  76   loongarch_rtx_cost_data int_mult_si_ (unsigned short _int_mult_si)
  77   {
  78     int_mult_si = _int_mult_si;
  79     return *this;
  80   }
  81
  82   loongarch_rtx_cost_data int_mult_di_ (unsigned short _int_mult_di)
  83   {
  84     int_mult_di = _int_mult_di;
  85     return *this;
  86   }
  87
  88   loongarch_rtx_cost_data int_div_si_ (unsigned short _int_div_si)
  89   {
  90     int_div_si = _int_div_si;
  91     return *this;
  92   }
  93
  94   loongarch_rtx_cost_data int_div_di_ (unsigned short _int_div_di)
  95   {
  96     int_div_di = _int_div_di;
  97     return *this;
  98   }
  99
 100   loongarch_rtx_cost_data movcf2gr_ (unsigned short _movcf2gr)
 101   {
 102     movcf2gr = _movcf2gr;
 103     return *this;
 104   }
 105
 106   loongarch_rtx_cost_data movgr2cf_ (unsigned short _movgr2cf)
 107   {
 108     movgr2cf = _movgr2cf;
 109     return *this;
 110   }
 111
 112   loongarch_rtx_cost_data branch_cost_ (unsigned short _branch_cost)
 113   {
 114     branch_cost = _branch_cost;
 115     return *this;
 116   }
 117
 118   loongarch_rtx_cost_data memory_latency_ (unsigned short _memory_latency)
 119   {
 120     memory_latency = _memory_latency;
 121     return *this;
 122   }
 123 };
 124
 125 /* Costs to use when optimizing for size.  */
 126 extern const struct loongarch_rtx_cost_data loongarch_rtx_cost_optimize_size;
 127
 128 /* Cache size record of known processor models.  */
 129 struct loongarch_cache {
 130   int l1d_line_size;  /* bytes */
 131   int l1d_size;       /* KiB */
 132   int l2d_size;       /* kiB */
 133   int simultaneous_prefetches; /* number of parallel prefetch */
 134
 135   loongarch_cache () : l1d_line_size (0),
 136                        l1d_size (0),
 137                        l2d_size (0),
 138                        simultaneous_prefetches (0) {}
 139
 140   loongarch_cache l1d_line_size_ (int _l1d_line_size)
 141   {
 142     l1d_line_size = _l1d_line_size;
 143     return *this;
 144   }
 145
 146   loongarch_cache l1d_size_ (int _l1d_size)
 147   {
 148     l1d_size = _l1d_size;
 149     return *this;
 150   }
 151
 152   loongarch_cache l2d_size_ (int _l2d_size)
 153   {
 154     l2d_size = _l2d_size;
 155     return *this;
 156   }
 157
 158   loongarch_cache simultaneous_prefetches_ (int _simultaneous_prefetches)
 159   {
 160     simultaneous_prefetches = _simultaneous_prefetches;
 161     return *this;
 162   }
 163 };
 164
 165 /* Alignment for functions loops and jumps for best performance.  For new
 166    uarchs the value should be measured via benchmarking.  See the
 167    documentation for -falign-functions, -falign-loops, and -falign-jumps in
 168    invoke.texi for the format.  */
 169 struct loongarch_align {
 170   const char *function; /* default value for -falign-functions */
 171   const char *loop;     /* default value for -falign-loops */
 172   const char *jump;     /* default value for -falign-jumps */
 173
 174   loongarch_align () : function (nullptr), loop (nullptr), jump (nullptr) {}
 175
 176   loongarch_align function_ (const char *_function)
 177   {
 178     function = _function;
 179     return *this;
 180   }
 181
 182   loongarch_align loop_ (const char *_loop)
 183   {
 184     loop = _loop;
 185     return *this;
 186   }
 187
 188   loongarch_align jump_ (const char *_jump)
 189   {
 190     jump = _jump;
 191     return *this;
 192   }
 193 };
 194
 195 #endif /* LOONGARCH_TUNE_H */