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annotate gcc/config/arc/arc600.md @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children 1830386684a0
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1 ;; DFA scheduling description of the Synopsys DesignWare ARC600 cpu
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2 ;; for GNU C compiler
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84e7813d76e9 gcc-8.2
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3 ;; Copyright (C) 2007-2018 Free Software Foundation, Inc.
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4 ;; Contributor: Joern Rennecke <joern.rennecke@embecosm.com>
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5 ;; on behalf of Synopsys Inc.
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6
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7 ;; This file is part of GCC.
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8
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9 ;; GCC is free software; you can redistribute it and/or modify
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10 ;; it under the terms of the GNU General Public License as published by
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11 ;; the Free Software Foundation; either version 3, or (at your option)
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12 ;; any later version.
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13
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14 ;; GCC is distributed in the hope that it will be useful,
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15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 ;; GNU General Public License for more details.
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18
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19 ;; You should have received a copy of the GNU General Public License
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20 ;; along with GCC; see the file COPYING3. If not see
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21 ;; <http://www.gnu.org/licenses/>.
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22
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23 (define_automaton "ARC600")
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24
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25 (define_cpu_unit "issue_600" "ARC600")
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26 (define_cpu_unit "mul64_600" "ARC600")
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27
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28 ; latency from flag-setting insns to branches is 3.
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29 (define_insn_reservation "compare_600" 3
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30 (and (eq_attr "tune" "arc600")
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31 (eq_attr "type" "compare"))
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32 "issue_600")
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33
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34 (define_insn_reservation "load_DI_600" 4
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35 (and (eq_attr "tune" "arc600")
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36 (eq_attr "type" "load")
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37 (match_operand:DI 0 "" ""))
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38 "issue_600")
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39
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40 (define_insn_reservation "load_600" 3
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41 (and (eq_attr "tune" "arc600")
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42 (eq_attr "type" "load")
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43 (not (match_operand:DI 0 "" "")))
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44 "issue_600")
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45
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46 (define_insn_reservation "mul_600_fast" 3
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47 (and (eq_attr "tune" "arc600")
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48 (match_test "arc_multcost < COSTS_N_INSNS (7)")
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49 (eq_attr "type" "multi,umulti"))
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50 "mul64_600*3")
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51
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52 (define_insn_reservation "mul_600_slow" 8
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53 (and (eq_attr "tune" "arc600")
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54 (match_test "arc_multcost >= COSTS_N_INSNS (7)")
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55 (eq_attr "type" "multi,umulti"))
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56 "mul64_600*8")
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57
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58 (define_insn_reservation "mul_mac_600" 3
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59 (and (eq_attr "tune" "arc600")
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60 (eq_attr "type" "mulmac_600"))
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61 "nothing*3")
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62
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63 (define_bypass 1 "mul_mac_600" "mul_mac_600")