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;; Copyright (C) 2002, 2003, 2004, 2005, 2007 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

;; .

;;

;; 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"))

  "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" "mthilo"))

  "vr55_mac")

(define_insn_reservation "ir_vr55_mfhilo" 5

  (and (eq_attr "cpu" "r5500")

       (eq_attr "type" "mfhilo"))

  "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")