;; Copyright (C) 2002-2021 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/. ;; ;; DFA-based pipeline description for 5500 (define_automaton “vr55”) (define_cpu_unit “vr55_dp0” “vr55”) (define_cpu_unit “vr55_dp1” “vr55”) (define_cpu_unit “vr55_mem” “vr55”) (define_cpu_unit “vr55_mac” “vr55”) (define_cpu_unit “vr55_fp” “vr55”) (define_cpu_unit “vr55_bru” “vr55”)

;; ;; The ordering of the instruction-execution-path/resource-usage ;; descriptions (also known as reservation RTL) is roughly ordered ;; based on the define attribute RTL for the “type” classification. ;; When modifying, remember that the first test that matches is the ;; reservation used! ;;

(define_insn_reservation “ir_vr55_unknown” 1 (and (eq_attr “cpu” “r5500”) (eq_attr “type” “unknown,atomic,syncloop”)) “vr55_dp0+vr55_dp1+vr55_mem+vr55_mac+vr55_fp+vr55_bru”)

;; Assume prediction fails. (define_insn_reservation “ir_vr55_branch” 2 (and (eq_attr “cpu” “r5500”) (eq_attr “type” “branch,jump,call”)) “vr55_bru”)

(define_insn_reservation “ir_vr55_load” 3 (and (eq_attr “cpu” “r5500”) (eq_attr “type” “load,fpload,fpidxload”)) “vr55_mem”)

(define_bypass 4 “ir_vr55_load” “ir_vr55_mthilo,ir_vr55_imul_si,ir_vr55_imul_di,ir_vr55_imadd, ir_vr55_idiv_si,ir_vr55_idiv_di”)

(define_insn_reservation “ir_vr55_store” 0 (and (eq_attr “cpu” “r5500”) (eq_attr “type” “store,fpstore,fpidxstore”)) “vr55_mem”)

;; This reservation is for conditional move based on integer ;; or floating point CC. (define_insn_reservation “ir_vr55_condmove” 2 (and (eq_attr “cpu” “r5500”) (eq_attr “type” “condmove”)) “vr55_dp0|vr55_dp1”)

;; Move to/from FPU registers (define_insn_reservation “ir_vr55_xfer” 2 (and (eq_attr “cpu” “r5500”) (eq_attr “type” “mfc,mtc”)) “vr55_dp0|vr55_dp1”)

(define_insn_reservation “ir_vr55_arith” 1 (and (eq_attr “cpu” “r5500”) (eq_attr “type” “arith,shift,signext,slt,clz,const,logical,move,nop,trap”)) “vr55_dp0|vr55_dp1”)

(define_bypass 2 “ir_vr55_arith” “ir_vr55_mthilo,ir_vr55_imul_si,ir_vr55_imul_di,ir_vr55_imadd, ir_vr55_idiv_si,ir_vr55_idiv_di”)

(define_insn_reservation “ir_vr55_mthilo” 1 (and (eq_attr “cpu” “r5500”) (eq_attr “type” “mthi,mtlo”)) “vr55_mac”)

(define_insn_reservation “ir_vr55_mfhilo” 5 (and (eq_attr “cpu” “r5500”) (eq_attr “type” “mfhi,mflo”)) “vr55_mac”)

;; The default latency is for the GPR result of a mul. Bypasses handle the ;; latency of {mul,mult}->{mfhi,mflo}. (define_insn_reservation “ir_vr55_imul_si” 5 (and (eq_attr “cpu” “r5500”) (and (eq_attr “type” “imul,imul3”) (eq_attr “mode” “SI”))) “vr55_mac”)

;; The default latency is for pre-reload scheduling and handles the case ;; where a pseudo destination will be stored in a GPR (as it usually is). ;; The delay includes the latency of the dmult itself and the anticipated ;; mflo or mfhi. ;; ;; Once the mflo or mfhi has been created, bypasses handle the latency ;; between it and the dmult. (define_insn_reservation “ir_vr55_imul_di” 9 (and (eq_attr “cpu” “r5500”) (and (eq_attr “type” “imul,imul3”) (eq_attr “mode” “DI”))) “vr55_mac*4”)

;; The default latency is as for ir_vr55_imul_si. (define_insn_reservation “ir_vr55_imadd” 5 (and (eq_attr “cpu” “r5500”) (eq_attr “type” “imadd”)) “vr55_mac”)

(define_bypass 1 “ir_vr55_imul_si,ir_vr55_imadd” “ir_vr55_imadd” “mips_linked_madd_p”)

(define_bypass 2 “ir_vr55_imul_si,ir_vr55_imadd” “ir_vr55_mfhilo”)

(define_bypass 4 “ir_vr55_imul_di” “ir_vr55_mfhilo”)

;; Divide algorithm is early out with best latency of 7 pcycles. ;; Use worst case for scheduling purposes. (define_insn_reservation “ir_vr55_idiv_si” 42 (and (eq_attr “cpu” “r5500”) (and (eq_attr “type” “idiv”) (eq_attr “mode” “SI”))) “vr55_mac”)

(define_insn_reservation “ir_vr55_idiv_di” 74 (and (eq_attr “cpu” “r5500”) (and (eq_attr “type” “idiv”) (eq_attr “mode” “DI”))) “vr55_mac”)

(define_insn_reservation “ir_vr55_fadd” 4 (and (eq_attr “cpu” “r5500”) (eq_attr “type” “fadd”)) “vr55_fp”)

(define_insn_reservation “ir_vr55_fmul_sf” 5 (and (eq_attr “cpu” “r5500”) (and (eq_attr “type” “fmul”) (eq_attr “mode” “SF”))) “vr55_mac”)

(define_insn_reservation “ir_vr55_fmul_df” 6 (and (eq_attr “cpu” “r5500”) (and (eq_attr “type” “fmul”) (eq_attr “mode” “DF”))) “vr55_mac”)

(define_insn_reservation “ir_vr55_fmadd_sf” 9 (and (eq_attr “cpu” “r5500”) (and (eq_attr “type” “fmadd”) (eq_attr “mode” “SF”))) “vr55_mac”)

(define_insn_reservation “ir_vr55_fmadd_df” 10 (and (eq_attr “cpu” “r5500”) (and (eq_attr “type” “fmadd”) (eq_attr “mode” “DF”))) “vr55_mac”)

(define_insn_reservation “ir_vr55_fdiv_sf” 30 (and (eq_attr “cpu” “r5500”) (and (eq_attr “type” “fdiv,frdiv,fsqrt”) (eq_attr “mode” “SF”))) “vr55_mac”)

(define_insn_reservation “ir_vr55_fdiv_df” 59 (and (eq_attr “cpu” “r5500”) (and (eq_attr “type” “fdiv,frdiv,fsqrt”) (eq_attr “mode” “DF”))) “vr55_mac”)

(define_insn_reservation “ir_vr55_fabs” 2 (and (eq_attr “cpu” “r5500”) (eq_attr “type” “fabs,fneg,fmove”)) “vr55_fp”)

(define_insn_reservation “ir_vr55_fcmp” 2 (and (eq_attr “cpu” “r5500”) (eq_attr “type” “fcmp”)) “vr55_fp”)

(define_insn_reservation “ir_vr55_fcvt_sf” 4 (and (eq_attr “cpu” “r5500”) (and (eq_attr “type” “fcvt”) (eq_attr “mode” “SF”))) “vr55_fp”)

(define_insn_reservation “ir_vr55_fcvt_df” 6 (and (eq_attr “cpu” “r5500”) (and (eq_attr “type” “fcvt”) (eq_attr “mode” “DF”))) “vr55_fp”)

(define_insn_reservation “ir_vr55_frsqrt_sf” 60 (and (eq_attr “cpu” “r5500”) (and (eq_attr “type” “frsqrt”) (eq_attr “mode” “SF”))) “vr55_mac”)

(define_insn_reservation “ir_vr55_frsqrt_df” 118 (and (eq_attr “cpu” “r5500”) (and (eq_attr “type” “frsqrt”) (eq_attr “mode” “DF”))) “vr55_mac”)

(define_insn_reservation “ir_vr55_multi” 1 (and (eq_attr “cpu” “r5500”) (eq_attr “type” “multi”)) “vr55_dp0+vr55_dp1+vr55_mem+vr55_mac+vr55_fp+vr55_bru”)