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1 ;; DFA scheduling description for SH-5 SHmedia instructions.
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2 ;; Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
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3
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4 ;; This file is part of GCC.
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5
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6 ;; GCC is free software; you can redistribute it and/or modify
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7 ;; it under the terms of the GNU General Public License as published by
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8 ;; the Free Software Foundation; either version 3, or (at your option)
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9 ;; any later version.
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10
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11 ;; GCC is distributed in the hope that it will be useful,
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12 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 ;; GNU General Public License for more details.
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15
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16 ;; You should have received a copy of the GNU General Public License
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17 ;; along with GCC; see the file COPYING3. If not see
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18 ;; <http://www.gnu.org/licenses/>.
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19
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20 ;; This is just a conversion of the old model using define_function_unit.
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21
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22 ;; When executing SHmedia code, the SH-5 is a fairly straightforward
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23 ;; single-issue machine. It has four pipelines, the branch unit (br),
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24 ;; the integer and multimedia unit (imu), the load/store unit (lsu), and
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25 ;; the floating point unit (fpu).
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26
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27 (define_automaton "sh5inst_pipe, sh5fpu_pipe")
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28
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29 (define_cpu_unit "sh5issue" "sh5inst_pipe")
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30
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31 (define_cpu_unit "sh5fds" "sh5fpu_pipe")
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32
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33 ;; Every instruction on SH-5 occupies the issue resource for at least one
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34 ;; cycle.
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35 (define_insn_reservation "shmedia1" 1
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36 (and (eq_attr "pipe_model" "sh5media")
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37 (eq_attr "type" "!pt_media,ptabs_media,invalidate_line_media,dmpy_media,load_media,fload_media,fcmp_media,fmove_media,fparith_media,dfparith_media,fpconv_media,dfpconv_media,dfmul_media,store_media,fstore_media,mcmp_media,mac_media,d2mpy_media,atrans_media,ustore_media"))
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38 "sh5issue")
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39
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40 ;; Specify the various types of instruction which have latency > 1
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41 (define_insn_reservation "shmedia2" 2
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42 (and (eq_attr "pipe_model" "sh5media")
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43 (eq_attr "type" "mcmp_media"))
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44 "sh5issue")
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45
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46 (define_insn_reservation "shmedia3" 3
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47 (and (eq_attr "pipe_model" "sh5media")
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48 (eq_attr "type" "dmpy_media,load_media,fcmp_media,mac_media"))
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49 "sh5issue")
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50 ;; but see sh_adjust_cost for mac_media exception.
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51
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52 (define_insn_reservation "shmedia4" 4
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53 (and (eq_attr "pipe_model" "sh5media")
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54 (eq_attr "type" "fload_media,fmove_media"))
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55 "sh5issue")
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56
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57 (define_insn_reservation "shmedia_d2mpy" 4
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58 (and (eq_attr "pipe_model" "sh5media")
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59 (eq_attr "type" "d2mpy_media"))
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60 "sh5issue*2")
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61
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62 (define_insn_reservation "shmedia5" 5
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63 (and (eq_attr "pipe_model" "sh5media")
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64 (eq_attr "type" "pt_media,ptabs_media"))
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65 "sh5issue")
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66
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67 (define_insn_reservation "shmedia6" 6
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68 (and (eq_attr "pipe_model" "sh5media")
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69 (eq_attr "type" "fparith_media,dfparith_media,fpconv_media,dfpconv_media"))
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70 "sh5issue")
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71
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72 (define_insn_reservation "shmedia_invalidate" 7
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73 (and (eq_attr "pipe_model" "sh5media")
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74 (eq_attr "type" "invalidate_line_media"))
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75 "sh5issue*7")
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76
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77 (define_insn_reservation "shmedia_dfmul" 9
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78 (and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "dfmul_media"))
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79 "sh5issue*4")
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80
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81 (define_insn_reservation "shmedia_atrans" 10
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82 (and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "atrans_media"))
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83 "sh5issue*5")
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84
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85 ;; Floating-point divide and square-root occupy an additional resource,
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86 ;; which is not internally pipelined. However, other instructions
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87 ;; can continue to issue.
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88 (define_insn_reservation "shmedia_fdiv" 19
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89 (and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "fdiv_media"))
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90 "sh5issue+sh5fds,sh5fds*18")
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91
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92 (define_insn_reservation "shmedia_dfdiv" 35
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93 (and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "dfdiv_media"))
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94 "sh5issue+sh5fds,sh5fds*34")
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