;; Pipeline model for Loongson gs464e cores.

;; Copyright (C) 2018-2021 Free Software Foundation, Inc. ;; ;; This file is part of GCC. ;; ;; GCC is free software; you can redistribute it and/or modify it ;; under the terms of the GNU General Public License as published ;; by the Free Software Foundation; either version 3, or (at your ;; option) any later version. ;; ;; GCC is distributed in the hope that it will be useful, but WITHOUT ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public ;; License for more details. ;; ;; You should have received a copy of the GNU General Public License ;; along with GCC; see the file COPYING3. If not see ;; http://www.gnu.org/licenses/.

;; Uncomment the following line to output automata for debugging. ;; (automata_option “v”)

;; Automaton for integer instructions. (define_automaton “gs464e_a_alu”)

;; Automaton for floating-point instructions. (define_automaton “gs464e_a_falu”)

;; Automaton for memory operations. (define_automaton “gs464e_a_mem”)

;; Describe the resources.

(define_cpu_unit “gs464e_alu1” “gs464e_a_alu”) (define_cpu_unit “gs464e_alu2” “gs464e_a_alu”) (define_cpu_unit “gs464e_mem1” “gs464e_a_mem”) (define_cpu_unit “gs464e_mem2” “gs464e_a_mem”) (define_cpu_unit “gs464e_falu1” “gs464e_a_falu”) (define_cpu_unit “gs464e_falu2” “gs464e_a_falu”)

;; Describe instruction reservations.

(define_insn_reservation “gs464e_arith” 1 (and (eq_attr “cpu” “gs464e”) (eq_attr “type” “arith,clz,const,logical, move,nop,shift,signext,slt”)) “gs464e_alu1 | gs464e_alu2”)

(define_insn_reservation “gs464e_branch” 1 (and (eq_attr “cpu” “gs464e”) (eq_attr “type” “branch,jump,call,condmove,trap”)) “gs464e_alu1 | gs464e_alu2”)

(define_insn_reservation “gs464e_mfhilo” 1 (and (eq_attr “cpu” “gs464e”) (eq_attr “type” “mfhi,mflo,mthi,mtlo”)) “gs464e_alu1 | gs464e_alu2”)

;; Operation imul3nc is fully pipelined. (define_insn_reservation “gs464e_imul3nc” 5 (and (eq_attr “cpu” “gs464e”) (eq_attr “type” “imul3nc”)) “gs464e_alu1 | gs464e_alu2”)

(define_insn_reservation “gs464e_imul” 7 (and (eq_attr “cpu” “gs464e”) (eq_attr “type” “imul,imadd”)) “gs464e_alu1 | gs464e_alu2”)

(define_insn_reservation “gs464e_idiv_si” 12 (and (eq_attr “cpu” “gs464e”) (and (eq_attr “type” “idiv”) (eq_attr “mode” “SI”))) “gs464e_alu1 | gs464e_alu2”)

(define_insn_reservation “gs464e_idiv_di” 25 (and (eq_attr “cpu” “gs464e”) (and (eq_attr “type” “idiv”) (eq_attr “mode” “DI”))) “gs464e_alu1 | gs464e_alu2”)

(define_insn_reservation “gs464e_load” 4 (and (eq_attr “cpu” “gs464e”) (eq_attr “type” “load”)) “gs464e_mem1 | gs464e_mem2”)

(define_insn_reservation “gs464e_fpload” 5 (and (eq_attr “cpu” “gs464e”) (eq_attr “type” “load,mfc,mtc”)) “gs464e_mem1 | gs464e_mem2”)

(define_insn_reservation “gs464e_prefetch” 0 (and (eq_attr “cpu” “gs464e”) (eq_attr “type” “prefetch,prefetchx”)) “gs464e_mem1 | gs464e_mem2”)

(define_insn_reservation “gs464e_store” 0 (and (eq_attr “cpu” “gs464e”) (eq_attr “type” “store,fpstore,fpidxstore”)) “gs464e_mem1 | gs464e_mem2”)

(define_insn_reservation “gs464e_fadd” 4 (and (eq_attr “cpu” “gs464e”) (eq_attr “type” “fadd,fmul,fmadd”)) “gs464e_falu1 | gs464e_falu2”)

(define_insn_reservation “gs464e_fcmp” 2 (and (eq_attr “cpu” “gs464e”) (eq_attr “type” “fabs,fcmp,fmove,fneg”)) “gs464e_falu1 | gs464e_falu2”)

(define_insn_reservation “gs464e_fcvt” 4 (and (eq_attr “cpu” “gs464e”) (eq_attr “type” “fcvt”)) “gs464e_falu1 | gs464e_falu2”)

(define_insn_reservation “gs464e_fdiv_sf” 12 (and (eq_attr “cpu” “gs464e”) (and (eq_attr “type” “fdiv,frdiv,fsqrt,frsqrt”) (eq_attr “mode” “SF”))) “gs464e_falu1 | gs464e_falu2”)

(define_insn_reservation “gs464e_fdiv_df” 19 (and (eq_attr “cpu” “gs464e”) (and (eq_attr “type” “fdiv,frdiv,fsqrt,frsqrt”) (eq_attr “mode” “DF”))) “gs464e_falu1 | gs464e_falu2”)

;; Force single-dispatch for unknown or multi. (define_insn_reservation “gs464e_unknown” 1 (and (eq_attr “cpu” “gs464e”) (eq_attr “type” “unknown,multi,atomic,syncloop”)) "gs464e_alu1 + gs464e_alu2 + gs464e_falu1

  • gs464e_falu2 + gs464e_mem1 + gs464e_mem2")

;; End of DFA-based pipeline description for gs464e