gcc/config/mips/p6600.md

;; DFA-based pipeline description for P6600.
;;
;; 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/>.

(define_automaton "p6600_agen_alq_pipe, p6600_mdu_pipe, p6600_fpu_pipe")

;; The address generation queue (AGQ) has AL2, CTISTD and LDSTA pipes
(define_cpu_unit "p6600_agq, p6600_al2, p6600_ctistd, p6600_lsu"
		 "p6600_agen_alq_pipe")

(define_cpu_unit "p6600_gpmul, p6600_gpdiv" "p6600_mdu_pipe")

;; The arithmetic-logic-unit queue (ALQ) has ALU pipe
(define_cpu_unit "p6600_alq, p6600_alu" "p6600_agen_alq_pipe")

;; The floating-point-unit queue (FPQ) has short and long pipes
(define_cpu_unit "p6600_fpu_short, p6600_fpu_long" "p6600_fpu_pipe")

;; Short FPU pipeline.
(define_cpu_unit "p6600_fpu_intadd, p6600_fpu_cmp, p6600_fpu_float,
		  p6600_fpu_logic_a, p6600_fpu_logic_b, p6600_fpu_div,
		  p6600_fpu_store" "p6600_fpu_pipe")

;; Long FPU pipeline.
(define_cpu_unit "p6600_fpu_logic, p6600_fpu_float_a, p6600_fpu_float_b,
		  p6600_fpu_float_c, p6600_fpu_float_d" "p6600_fpu_pipe")
(define_cpu_unit "p6600_fpu_mult, p6600_fpu_fdiv, p6600_fpu_apu" "p6600_fpu_pipe")

(define_reservation "p6600_agq_al2" "p6600_agq, p6600_al2")
(define_reservation "p6600_agq_ctistd" "p6600_agq, p6600_ctistd")
(define_reservation "p6600_agq_lsu" "p6600_agq, p6600_lsu")
(define_reservation "p6600_alq_alu" "p6600_alq, p6600_alu")

;;
;; FPU-MSA pipe
;;

;; Arithmetic
;; add, hadd, sub, hsub, average, min, max, compare
(define_insn_reservation "p6600_msa_short_int_add" 2
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_int_arith"))
  "p6600_fpu_short, p6600_fpu_intadd")

;; Bitwise Instructions
;; and, or, xor, bit-clear, leading-bits-count, shift, shuffle
(define_insn_reservation "p6600_msa_short_logic" 2
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_shift,simd_bit,simd_splat,simd_fill,simd_shf,
			simd_permute,simd_logic"))
  "p6600_fpu_short, p6600_fpu_logic_a")

;; move.v
(define_insn_reservation "p6600_msa_short_logic_move_v" 2
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_move"))
  "p6600_fpu_short, p6600_fpu_logic_a")

;; Float compare
(define_insn_reservation "p6600_msa_short_cmp" 2
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_fcmp"))
  "p6600_fpu_short, p6600_fpu_cmp")

;; Float exp2, min, max
(define_insn_reservation "p6600_msa_short_float2" 2
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_fexp2,simd_fminmax"))
  "p6600_fpu_short, p6600_fpu_float")

;; Vector sat
(define_insn_reservation "p6600_msa_short_logic3" 3
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_sat,simd_pcnt"))
  "p6600_fpu_short, p6600_fpu_logic_a, p6600_fpu_logic_b")

;; Vector copy, bz, bnz
(define_insn_reservation "p6600_msa_short_store4" 4
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_copy,simd_branch,simd_cmsa"))
  "p6600_fpu_short, p6600_fpu_store")

;; Vector load
(define_insn_reservation "p6600_msa_load" 8
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_load"))
  "p6600_agq_lsu")

;; Vector store
(define_insn_reservation "p6600_msa_short_store" 1
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_store"))
  "p6600_agq_lsu")

;; binsl, binsr, insert, vshf, sld
(define_insn_reservation "p6600_msa_long_logic" 2
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_bitins,simd_bitmov,simd_insert,simd_sld"))
  "p6600_fpu_long, p6600_fpu_logic")

;; Float fclass, flog2
(define_insn_reservation "p6600_msa_long_float2" 2
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_fclass,simd_flog2"))
  "p6600_fpu_long, p6600_fpu_float_a")

;; fadd, fsub
(define_insn_reservation "p6600_msa_long_float4" 4
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_fadd,simd_fcvt"))
  "p6600_fpu_long, p6600_fpu_float_a, p6600_fpu_float_b")

;; fmul
(define_insn_reservation "p6600_msa_long_float5" 5
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_fmul"))
  "p6600_fpu_long, p6600_fpu_float_a, p6600_fpu_float_b, p6600_fpu_float_c")

;; fmadd, fmsub
(define_insn_reservation "p6600_msa_long_float8" 8
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_fmadd"))
  "p6600_fpu_long, p6600_fpu_float_a,
   p6600_fpu_float_b, p6600_fpu_float_c, p6600_fpu_float_d")

;; Vector mul, dotp, madd, msub
(define_insn_reservation "p6600_msa_long_mult" 5
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_mul"))
  "p6600_fpu_long, p6600_fpu_mult")

;; fdiv, fmod (semi-pipelined)
(define_insn_reservation "p6600_msa_long_fdiv" 10
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_fdiv"))
  "p6600_fpu_long, nothing, nothing, p6600_fpu_fdiv*8")

;; div, mod (non-pipelined)
(define_insn_reservation "p6600_msa_long_div" 10
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "simd_div"))
  "p6600_fpu_long, p6600_fpu_div*9, p6600_fpu_div + p6600_fpu_logic_a")

;;
;; FPU pipe
;;

;; fadd, fsub
(define_insn_reservation "p6600_fpu_fadd" 4
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "fadd"))
  "p6600_fpu_long, p6600_fpu_apu")

;; fabs, fneg, fcmp
(define_insn_reservation "p6600_fpu_fabs" 2
  (and (eq_attr "cpu" "p6600")
       (ior (eq_attr "type" "fabs,fneg,fcmp,fmove")
	   (and (eq_attr "type" "condmove")
		(eq_attr "mode" "SF,DF"))))
  "p6600_fpu_short, p6600_fpu_apu")

;; fload
(define_insn_reservation "p6600_fpu_fload" 8
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "fpload,fpidxload"))
  "p6600_agq_lsu")

;; fstore
(define_insn_reservation "p6600_fpu_fstore" 1
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "fpstore,fpidxstore"))
  "p6600_agq_lsu")

;; fmadd
(define_insn_reservation "p6600_fpu_fmadd" 8
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "fmadd"))
  "p6600_fpu_long, p6600_fpu_apu")

;; fmul
(define_insn_reservation "p6600_fpu_fmul" 5
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "fmul"))
  "p6600_fpu_long, p6600_fpu_apu")

;; fdiv, fsqrt
(define_insn_reservation "p6600_fpu_div" 17
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "fdiv,frdiv,fsqrt,frsqrt"))
  "p6600_fpu_long, p6600_fpu_apu*17")

;; fcvt
(define_insn_reservation "p6600_fpu_fcvt" 4
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "fcvt"))
  "p6600_fpu_long, p6600_fpu_apu")

;; mtc
(define_insn_reservation "p6600_fpu_fmtc" 7
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "mtc"))
  "p6600_agq_lsu")

;; mfc
(define_insn_reservation "p6600_fpu_fmfc" 7
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "mfc"))
  "p6600_agq_lsu")

;;
;; Integer pipe
;;

;; and
(define_insn_reservation "p6600_int_and" 1
  (and (eq_attr "cpu" "p6600")
       (eq_attr "move_type" "logical"))
  "p6600_alq_alu")

;; lui
(define_insn_reservation "p6600_int_lui" 1
  (and (eq_attr "cpu" "p6600")
       (eq_attr "move_type" "const"))
  "p6600_alq_alu")

;; Load lb, lbu, lh, lhu, lq, lw, lw_i2f, lwxs
(define_insn_reservation "p6600_int_load" 4
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "load"))
  "p6600_agq_lsu")

;; store
(define_insn_reservation "p6600_int_store" 3
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "store"))
  "p6600_agq_lsu")

;; andi, sll, srl, seb, seh
(define_insn_reservation "p6600_int_arith_1" 1
  (and (eq_attr "cpu" "p6600")
       (eq_attr "move_type" "andi,sll0,signext"))
  "p6600_alq_alu | p6600_agq_al2")

;; addi, addiu, ori, xori, add, addu
(define_insn_reservation "p6600_int_arith_2" 1
  (and (eq_attr "cpu" "p6600")
       (eq_attr "alu_type" "add,or,xor"))
  "p6600_alq_alu | p6600_agq_al2")

;; nor, sub
(define_insn_reservation "p6600_int_arith_3" 1
  (and (eq_attr "cpu" "p6600")
       (eq_attr "alu_type" "and,not,nor,sub"))
  "p6600_alq_alu")

;; srl, sra, rotr, slt, sllv, srlv
(define_insn_reservation "p6600_int_arith_4" 1
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "shift,slt,move"))
  "p6600_alq_alu | p6600_agq_al2")

;; nop
(define_insn_reservation "p6600_int_nop" 0
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "nop"))
  "p6600_alq_alu | p6600_agq_al2")

;; clo, clz
(define_insn_reservation "p6600_int_countbits" 2
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "clz"))
  "p6600_agq_al2")

;; Conditional moves
(define_insn_reservation "p6600_int_condmove" 2
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "condmove"))
  "p6600_agq_al2")

;; mfhi/lo
(define_insn_reservation "p6600_dsp_mfhilo" 5
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "mfhi,mflo"))
  "p6600_agq_lsu")

;; mthi/lo
(define_insn_reservation "p6600_dsp_mthilo" 5
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "mthi,mtlo"))
  "p6600_agq_lsu")

;; mul, mulu, muh, muhu
(define_insn_reservation "p6600_dsp_mult" 4
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "imul3,imul,imul3nc"))
  "p6600_gpmul")

;; branch and jump
(define_insn_reservation "p6600_int_branch" 1
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "branch,jump"))
  "p6600_agq_ctistd")

;; prefetch
(define_insn_reservation "p6600_int_prefetch" 0
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "prefetch,prefetchx"))
  "p6600_agq_lsu")

;; divide
(define_insn_reservation "p6600_int_div" 8
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "idiv,idiv3"))
  "p6600_gpdiv*5")

;; arith
(define_insn_reservation "p6600_int_arith_5" 2
  (and (eq_attr "cpu" "p6600")
       (eq_attr "type" "arith"))
  "p6600_agq_al2")

;; call
(define_insn_reservation "p6600_int_call" 2
  (and (eq_attr "cpu" "p6600")
       (eq_attr "jal" "indirect,direct"))
  "p6600_agq_ctistd")