OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [config/] [sh/] [shmedia.md] - Blame information for rev 282

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 282 jeremybenn
;; DFA scheduling description for SH-5 SHmedia instructions.
2
;; Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
3
 
4
;; This file is part of GCC.
5
 
6
;; GCC is free software; you can redistribute it and/or modify
7
;; it under the terms of the GNU General Public License as published by
8
;; the Free Software Foundation; either version 3, or (at your option)
9
;; any later version.
10
 
11
;; GCC is distributed in the hope that it will be useful,
12
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
;; GNU General Public License for more details.
15
 
16
;; You should have received a copy of the GNU General Public License
17
;; along with GCC; see the file COPYING3.  If not see
18
;; .
19
 
20
;; This is just a conversion of the old model using define_function_unit.
21
 
22
;; When executing SHmedia code, the SH-5 is a fairly straightforward
23
;; single-issue machine.  It has four pipelines, the branch unit (br),
24
;; the integer and multimedia unit (imu), the load/store unit (lsu), and
25
;; the floating point unit (fpu).
26
 
27
(define_automaton "sh5inst_pipe, sh5fpu_pipe")
28
 
29
(define_cpu_unit "sh5issue" "sh5inst_pipe")
30
 
31
(define_cpu_unit "sh5fds" "sh5fpu_pipe")
32
 
33
;; Every instruction on SH-5 occupies the issue resource for at least one
34
;; cycle.
35
(define_insn_reservation "shmedia1" 1
36
  (and (eq_attr "pipe_model" "sh5media")
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"))
38
  "sh5issue")
39
 
40
;; Specify the various types of instruction which have latency > 1
41
(define_insn_reservation "shmedia2" 2
42
  (and (eq_attr "pipe_model" "sh5media")
43
       (eq_attr "type" "mcmp_media"))
44
  "sh5issue")
45
 
46
(define_insn_reservation "shmedia3" 3
47
  (and (eq_attr "pipe_model" "sh5media")
48
       (eq_attr "type" "dmpy_media,load_media,fcmp_media,mac_media"))
49
  "sh5issue")
50
;; but see sh_adjust_cost for mac_media exception.
51
 
52
(define_insn_reservation "shmedia4" 4
53
  (and (eq_attr "pipe_model" "sh5media")
54
       (eq_attr "type" "fload_media,fmove_media"))
55
  "sh5issue")
56
 
57
(define_insn_reservation "shmedia_d2mpy" 4
58
  (and (eq_attr "pipe_model" "sh5media")
59
       (eq_attr "type" "d2mpy_media"))
60
  "sh5issue*2")
61
 
62
(define_insn_reservation "shmedia5" 5
63
  (and (eq_attr "pipe_model" "sh5media")
64
       (eq_attr "type" "pt_media,ptabs_media"))
65
  "sh5issue")
66
 
67
(define_insn_reservation "shmedia6" 6
68
  (and (eq_attr "pipe_model" "sh5media")
69
       (eq_attr "type" "fparith_media,dfparith_media,fpconv_media,dfpconv_media"))
70
  "sh5issue")
71
 
72
(define_insn_reservation "shmedia_invalidate" 7
73
  (and (eq_attr "pipe_model" "sh5media")
74
       (eq_attr "type" "invalidate_line_media"))
75
  "sh5issue*7")
76
 
77
(define_insn_reservation "shmedia_dfmul" 9
78
  (and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "dfmul_media"))
79
  "sh5issue*4")
80
 
81
(define_insn_reservation "shmedia_atrans" 10
82
  (and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "atrans_media"))
83
  "sh5issue*5")
84
 
85
;; Floating-point divide and square-root occupy an additional resource,
86
;; which is not internally pipelined.  However, other instructions
87
;; can continue to issue.
88
(define_insn_reservation "shmedia_fdiv" 19
89
  (and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "fdiv_media"))
90
  "sh5issue+sh5fds,sh5fds*18")
91
 
92
(define_insn_reservation "shmedia_dfdiv" 35
93
  (and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "dfdiv_media"))
94
  "sh5issue+sh5fds,sh5fds*34")

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.