gcc/config/sparc/leon5.md

   1 ;; Scheduling description for LEON5.
   2 ;;   Copyright (C) 2021-2022 Free Software Foundation, Inc.
   3 ;;
   4 ;; This file is part of GCC.
   5 ;;
   6 ;; GCC is free software; you can redistribute it and/or modify
   7 ;; it under the terms of the GNU General Public License as published by
   8 ;; the Free Software Foundation; either version 3, or (at your option)
   9 ;; any later version.
  10 ;;
  11 ;; GCC 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
  14 ;; GNU General Public License for more details.
  15 ;;
  16 ;; You should have received a copy of the GNU General Public License
  17 ;; along with GCC; see the file COPYING3.  If not see
  18 ;; <http://www.gnu.org/licenses/>.
  19
  20
  21 ;; The LEON5 can often dual issue instructions from the same 64-bit aligned
  22 ;; double word if there are no data dependencies.
  23 ;;
  24 ;; Avoid scheduling load/store, FPU, and multiply instructions back to
  25 ;; back, regardless of data dependencies.
  26 ;;
  27 ;; Push comparisons away from the associated branch instruction.
  28 ;;
  29 ;; Avoid scheduling ALU instructions with data dependencies back to back.
  30 ;;
  31 ;; Schedule three instructions between load and dependent instruction.
  32
  33 (define_automaton "leon5")
  34
  35 (define_cpu_unit "leon5_memory" "leon5")
  36 (define_cpu_unit "leon5_mul" "leon5")
  37 (define_cpu_unit "grfpu_d" "grfpu")
  38 (define_cpu_unit "grfpu_s" "grfpu")
  39
  40 (define_insn_reservation "leon5_load" 4
  41   (and (eq_attr "cpu" "leon5")
  42   (eq_attr "type" "load,sload"))
  43   "leon5_memory * 2, nothing * 2")
  44
  45 (define_insn_reservation "leon5_fpload" 2
  46   (and (eq_attr "cpu" "leon5")
  47   (eq_attr "type" "fpload"))
  48   "leon5_memory * 2 + grfpu_alu * 2")
  49
  50 (define_insn_reservation "leon5_store" 2
  51   (and (eq_attr "cpu" "leon5")
  52   (eq_attr "type" "store"))
  53   "leon5_memory * 2")
  54
  55 (define_insn_reservation "leon5_fpstore" 2
  56   (and (eq_attr "cpu" "leon5")
  57   (eq_attr "type" "fpstore"))
  58   "leon5_memory * 2 + grfpu_alu * 2")
  59
  60 (define_insn_reservation "leon5_ialu" 2
  61   (and (eq_attr "cpu" "leon5")
  62   (eq_attr "type" "ialu, shift, ialuX"))
  63   "nothing * 2")
  64
  65 (define_insn_reservation "leon5_compare" 5
  66   (and (eq_attr "cpu" "leon5")
  67   (eq_attr "type" "compare"))
  68   "nothing * 5")
  69
  70 (define_insn_reservation "leon5_imul" 4
  71   (and (eq_attr "cpu" "leon5")
  72   (eq_attr "type" "imul"))
  73   "leon5_mul * 2, nothing * 2")
  74
  75 (define_insn_reservation "leon5_idiv" 35
  76   (and (eq_attr "cpu" "leon5")
  77   (eq_attr "type" "imul"))
  78   "nothing * 35")
  79
  80 (define_insn_reservation "leon5_fp_alu" 5
  81   (and (eq_attr "cpu" "leon5")
  82   (eq_attr "type" "fp,fpcmp,fpmul,fpmove"))
  83   "grfpu_alu * 2, nothing*3")
  84
  85 (define_insn_reservation "leon5_fp_divs" 17
  86   (and (eq_attr "cpu" "leon5")
  87   (eq_attr "type" "fpdivs"))
  88   "grfpu_alu * 2 + grfpu_d*16, nothing")
  89
  90 (define_insn_reservation "leon5_fp_divd" 18
  91   (and (eq_attr "cpu" "leon5")
  92   (eq_attr "type" "fpdivd"))
  93   "grfpu_alu * 2 + grfpu_d*17, nothing")
  94
  95 (define_insn_reservation "leon5_fp_sqrts" 25
  96   (and (eq_attr "cpu" "leon5")
  97   (eq_attr "type" "fpsqrts"))
  98   "grfpu_alu * 2 + grfpu_s*24, nothing")
  99
 100 (define_insn_reservation "leon5_fp_sqrtd" 26
 101   (and (eq_attr "cpu" "leon5")
 102   (eq_attr "type" "fpsqrtd"))
 103   "grfpu_alu * 2 + grfpu_s*25, nothing")