95 lines
3.5 KiB
Markdown
95 lines
3.5 KiB
Markdown
;; DFA scheduling description for SH-5 SHmedia instructions.
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;; Copyright (C) 2004, 2005, 2007 Free Software Foundation, 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
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;; GCC is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public 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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;; This is just a conversion of the old model using define_function_unit.
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;; When executing SHmedia code, the SH-5 is a fairly straightforward
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;; single-issue machine. It has four pipelines, the branch unit (br),
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;; the integer and multimedia unit (imu), the load/store unit (lsu), and
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;; the floating point unit (fpu).
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(define_automaton "sh5inst_pipe, sh5fpu_pipe")
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(define_cpu_unit "sh5issue" "sh5inst_pipe")
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(define_cpu_unit "sh5fds" "sh5fpu_pipe")
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;; Every instruction on SH-5 occupies the issue resource for at least one
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;; cycle.
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(define_insn_reservation "shmedia1" 1
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(and (eq_attr "pipe_model" "sh5media")
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(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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"sh5issue")
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;; Specify the various types of instruction which have latency > 1
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(define_insn_reservation "shmedia2" 2
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(and (eq_attr "pipe_model" "sh5media")
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(eq_attr "type" "mcmp_media"))
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"sh5issue")
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(define_insn_reservation "shmedia3" 3
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(and (eq_attr "pipe_model" "sh5media")
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(eq_attr "type" "dmpy_media,load_media,fcmp_media,mac_media"))
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"sh5issue")
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;; but see sh_adjust_cost for mac_media exception.
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(define_insn_reservation "shmedia4" 4
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(and (eq_attr "pipe_model" "sh5media")
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(eq_attr "type" "fload_media,fmove_media"))
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"sh5issue")
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(define_insn_reservation "shmedia_d2mpy" 4
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(and (eq_attr "pipe_model" "sh5media")
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(eq_attr "type" "d2mpy_media"))
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"sh5issue*2")
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(define_insn_reservation "shmedia5" 5
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(and (eq_attr "pipe_model" "sh5media")
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(eq_attr "type" "pt_media,ptabs_media"))
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"sh5issue")
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(define_insn_reservation "shmedia6" 6
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(and (eq_attr "pipe_model" "sh5media")
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(eq_attr "type" "fparith_media,dfparith_media,fpconv_media,dfpconv_media"))
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"sh5issue")
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(define_insn_reservation "shmedia_invalidate" 7
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(and (eq_attr "pipe_model" "sh5media")
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(eq_attr "type" "invalidate_line_media"))
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"sh5issue*7")
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(define_insn_reservation "shmedia_dfmul" 9
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(and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "dfmul_media"))
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"sh5issue*4")
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(define_insn_reservation "shmedia_atrans" 10
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(and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "atrans_media"))
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"sh5issue*5")
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;; Floating-point divide and square-root occupy an additional resource,
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;; which is not internally pipelined. However, other instructions
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;; can continue to issue.
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(define_insn_reservation "shmedia_fdiv" 19
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(and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "fdiv_media"))
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"sh5issue+sh5fds,sh5fds*18")
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(define_insn_reservation "shmedia_dfdiv" 35
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(and (eq_attr "pipe_model" "sh5media") (eq_attr "type" "dfdiv_media"))
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"sh5issue+sh5fds,sh5fds*34")
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