190 lines
6.6 KiB
Markdown
190 lines
6.6 KiB
Markdown
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;; Marvell WMMX2 pipeline description
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;; Copyright (C) 2011-2021 Free Software Foundation, Inc.
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;; Written by Marvell, Inc.
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;; This file is part of GCC.
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;; GCC is free software; you can redistribute it and/or modify it
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;; under the terms of the GNU General Public License as published
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;; by the Free Software Foundation; either version 3, or (at your
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;; option) any later version.
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;; GCC is distributed in the hope that it will be useful, but WITHOUT
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;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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;; License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GCC; see the file COPYING3. If not see
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;; <http://www.gnu.org/licenses/>.
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(define_automaton "marvell_f_iwmmxt")
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Pipelines
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; This is a 7-stage pipelines:
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;;
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;; MD | MI | ME1 | ME2 | ME3 | ME4 | MW
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;;
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;; There are various bypasses modelled to a greater or lesser extent.
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;;
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;; Latencies in this file correspond to the number of cycles after
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;; the issue stage that it takes for the result of the instruction to
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;; be computed, or for its side-effects to occur.
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(define_cpu_unit "mf_iwmmxt_MD" "marvell_f_iwmmxt")
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(define_cpu_unit "mf_iwmmxt_MI" "marvell_f_iwmmxt")
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(define_cpu_unit "mf_iwmmxt_ME1" "marvell_f_iwmmxt")
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(define_cpu_unit "mf_iwmmxt_ME2" "marvell_f_iwmmxt")
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(define_cpu_unit "mf_iwmmxt_ME3" "marvell_f_iwmmxt")
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(define_cpu_unit "mf_iwmmxt_ME4" "marvell_f_iwmmxt")
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(define_cpu_unit "mf_iwmmxt_MW" "marvell_f_iwmmxt")
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(define_reservation "mf_iwmmxt_ME"
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"mf_iwmmxt_ME1,mf_iwmmxt_ME2,mf_iwmmxt_ME3,mf_iwmmxt_ME4"
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)
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(define_reservation "mf_iwmmxt_pipeline"
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"mf_iwmmxt_MD, mf_iwmmxt_MI, mf_iwmmxt_ME, mf_iwmmxt_MW"
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)
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;; An attribute to indicate whether our reservations are applicable.
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(define_attr "marvell_f_iwmmxt" "yes,no"
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(const (if_then_else (symbol_ref "arm_arch_iwmmxt")
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(const_string "yes") (const_string "no"))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; instruction classes
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; An attribute appended to instructions for classification
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(define_attr "wmmxt_shift" "yes,no"
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(if_then_else (eq_attr "type" "wmmx_wror, wmmx_wsll, wmmx_wsra, wmmx_wsrl")
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(const_string "yes") (const_string "no"))
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)
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(define_attr "wmmxt_pack" "yes,no"
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(if_then_else (eq_attr "type" "wmmx_waligni, wmmx_walignr, wmmx_wmerge,\
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wmmx_wpack, wmmx_wshufh, wmmx_wunpckeh,\
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wmmx_wunpckih, wmmx_wunpckel, wmmx_wunpckil")
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(const_string "yes") (const_string "no"))
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)
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(define_attr "wmmxt_mult_c1" "yes,no"
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(if_then_else (eq_attr "type" "wmmx_wmac, wmmx_wmadd, wmmx_wmiaxy,\
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wmmx_wmiawxy, wmmx_wmulw, wmmx_wqmiaxy,\
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wmmx_wqmulwm")
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(const_string "yes") (const_string "no"))
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)
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(define_attr "wmmxt_mult_c2" "yes,no"
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(if_then_else (eq_attr "type" "wmmx_wmul, wmmx_wqmulm")
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(const_string "yes") (const_string "no"))
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)
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(define_attr "wmmxt_alu_c1" "yes,no"
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(if_then_else (eq_attr "type" "wmmx_wabs, wmmx_wabsdiff, wmmx_wand,\
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wmmx_wandn, wmmx_wmov, wmmx_wor, wmmx_wxor")
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(const_string "yes") (const_string "no"))
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)
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(define_attr "wmmxt_alu_c2" "yes,no"
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(if_then_else (eq_attr "type" "wmmx_wacc, wmmx_wadd, wmmx_waddsubhx,\
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wmmx_wavg2, wmmx_wavg4, wmmx_wcmpeq,\
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wmmx_wcmpgt, wmmx_wmax, wmmx_wmin,\
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wmmx_wsub, wmmx_waddbhus, wmmx_wsubaddhx")
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(const_string "yes") (const_string "no"))
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)
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(define_attr "wmmxt_alu_c3" "yes,no"
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(if_then_else (eq_attr "type" "wmmx_wsad")
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(const_string "yes") (const_string "no"))
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)
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(define_attr "wmmxt_transfer_c1" "yes,no"
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(if_then_else (eq_attr "type" "wmmx_tbcst, wmmx_tinsr,\
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wmmx_tmcr, wmmx_tmcrr")
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(const_string "yes") (const_string "no"))
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)
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(define_attr "wmmxt_transfer_c2" "yes,no"
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(if_then_else (eq_attr "type" "wmmx_textrm, wmmx_tmovmsk,\
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wmmx_tmrc, wmmx_tmrrc")
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(const_string "yes") (const_string "no"))
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)
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(define_attr "wmmxt_transfer_c3" "yes,no"
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(if_then_else (eq_attr "type" "wmmx_tmia, wmmx_tmiaph, wmmx_tmiaxy")
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(const_string "yes") (const_string "no"))
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)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Main description
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define_insn_reservation "marvell_f_iwmmxt_alu_c1" 1
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(and (eq_attr "marvell_f_iwmmxt" "yes")
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(eq_attr "wmmxt_alu_c1" "yes"))
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"mf_iwmmxt_pipeline")
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(define_insn_reservation "marvell_f_iwmmxt_pack" 1
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(and (eq_attr "marvell_f_iwmmxt" "yes")
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(eq_attr "wmmxt_pack" "yes"))
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"mf_iwmmxt_pipeline")
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(define_insn_reservation "marvell_f_iwmmxt_shift" 1
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(and (eq_attr "marvell_f_iwmmxt" "yes")
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(eq_attr "wmmxt_shift" "yes"))
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"mf_iwmmxt_pipeline")
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(define_insn_reservation "marvell_f_iwmmxt_transfer_c1" 1
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(and (eq_attr "marvell_f_iwmmxt" "yes")
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(eq_attr "wmmxt_transfer_c1" "yes"))
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"mf_iwmmxt_pipeline")
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(define_insn_reservation "marvell_f_iwmmxt_transfer_c2" 5
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(and (eq_attr "marvell_f_iwmmxt" "yes")
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(eq_attr "wmmxt_transfer_c2" "yes"))
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"mf_iwmmxt_pipeline")
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(define_insn_reservation "marvell_f_iwmmxt_alu_c2" 2
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(and (eq_attr "marvell_f_iwmmxt" "yes")
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(eq_attr "wmmxt_alu_c2" "yes"))
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"mf_iwmmxt_pipeline")
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(define_insn_reservation "marvell_f_iwmmxt_alu_c3" 3
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(and (eq_attr "marvell_f_iwmmxt" "yes")
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(eq_attr "wmmxt_alu_c3" "yes"))
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"mf_iwmmxt_pipeline")
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(define_insn_reservation "marvell_f_iwmmxt_transfer_c3" 4
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(and (eq_attr "marvell_f_iwmmxt" "yes")
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(eq_attr "wmmxt_transfer_c3" "yes"))
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"mf_iwmmxt_pipeline")
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(define_insn_reservation "marvell_f_iwmmxt_mult_c1" 4
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(and (eq_attr "marvell_f_iwmmxt" "yes")
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(eq_attr "wmmxt_mult_c1" "yes"))
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"mf_iwmmxt_pipeline")
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;There is a forwarding path from ME3 stage
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(define_insn_reservation "marvell_f_iwmmxt_mult_c2" 3
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(and (eq_attr "marvell_f_iwmmxt" "yes")
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(eq_attr "wmmxt_mult_c2" "yes"))
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"mf_iwmmxt_pipeline")
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(define_insn_reservation "marvell_f_iwmmxt_wstr" 0
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(and (eq_attr "marvell_f_iwmmxt" "yes")
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(eq_attr "type" "wmmx_wstr"))
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"mf_iwmmxt_pipeline")
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;There is a forwarding path from MW stage
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(define_insn_reservation "marvell_f_iwmmxt_wldr" 5
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(and (eq_attr "marvell_f_iwmmxt" "yes")
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(eq_attr "type" "wmmx_wldr"))
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"mf_iwmmxt_pipeline")
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