gcc/config/riscv/generic.md

   1 ;; Generic DFA-based pipeline description for RISC-V targets.
   2 ;; Copyright (C) 2011-2022 Free Software Foundation, Inc.
   3 ;; Contributed by Andrew Waterman (andrew@sifive.com).
   4 ;; Based on MIPS target for GNU compiler.
   5
   6 ;; This file is part of GCC.
   7
   8 ;; GCC is free software; you can redistribute it and/or modify it
   9 ;; under the terms of the GNU General Public License as published
  10 ;; by the Free Software Foundation; either version 3, or (at your
  11 ;; option) any later version.
  12
  13 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
  14 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  15 ;; or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  16 ;; License for more details.
  17
  18 ;; You should have received a copy of the GNU General Public License
  19 ;; along with GCC; see the file COPYING3.  If not see
  20 ;; <http://www.gnu.org/licenses/>.
  21
  22
  23 (define_automaton "pipe0")
  24 (define_cpu_unit "alu" "pipe0")
  25 (define_cpu_unit "imuldiv" "pipe0")
  26 (define_cpu_unit "fdivsqrt" "pipe0")
  27
  28 (define_insn_reservation "generic_alu" 1
  29   (and (eq_attr "tune" "generic")
  30        (eq_attr "type" "unknown,const,arith,shift,slt,multi,auipc,nop,logical,move"))
  31   "alu")
  32
  33 (define_insn_reservation "generic_load" 3
  34   (and (eq_attr "tune" "generic")
  35        (eq_attr "type" "load,fpload"))
  36   "alu")
  37
  38 (define_insn_reservation "generic_store" 1
  39   (and (eq_attr "tune" "generic")
  40        (eq_attr "type" "store,fpstore"))
  41   "alu")
  42
  43 (define_insn_reservation "generic_xfer" 3
  44   (and (eq_attr "tune" "generic")
  45        (eq_attr "type" "mfc,mtc,fcvt,fmove,fcmp"))
  46   "alu")
  47
  48 (define_insn_reservation "generic_branch" 1
  49   (and (eq_attr "tune" "generic")
  50        (eq_attr "type" "branch,jump,call"))
  51   "alu")
  52
  53 (define_insn_reservation "generic_imul" 10
  54   (and (eq_attr "tune" "generic")
  55        (eq_attr "type" "imul"))
  56   "imuldiv*10")
  57
  58 (define_insn_reservation "generic_idivsi" 34
  59   (and (eq_attr "tune" "generic")
  60        (and (eq_attr "type" "idiv")
  61             (eq_attr "mode" "SI")))
  62   "imuldiv*34")
  63
  64 (define_insn_reservation "generic_idivdi" 66
  65   (and (eq_attr "tune" "generic")
  66        (and (eq_attr "type" "idiv")
  67             (eq_attr "mode" "DI")))
  68   "imuldiv*66")
  69
  70 (define_insn_reservation "generic_fmul_single" 5
  71   (and (eq_attr "tune" "generic")
  72        (and (eq_attr "type" "fadd,fmul,fmadd")
  73             (eq_attr "mode" "SF")))
  74   "alu")
  75
  76 (define_insn_reservation "generic_fmul_double" 7
  77   (and (eq_attr "tune" "generic")
  78        (and (eq_attr "type" "fadd,fmul,fmadd")
  79             (eq_attr "mode" "DF")))
  80   "alu")
  81
  82 (define_insn_reservation "generic_fdiv" 20
  83   (and (eq_attr "tune" "generic")
  84        (eq_attr "type" "fdiv"))
  85   "fdivsqrt*20")
  86
  87 (define_insn_reservation "generic_fsqrt" 25
  88   (and (eq_attr "tune" "generic")
  89        (eq_attr "type" "fsqrt"))
  90   "fdivsqrt*25")