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;; Scheduling description for LEON.
;; Copyright (C) 2010-2013 Free Software Foundation, Inc.
;;
;; This file is part of GCC.
;;
;; GCC is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;;
;; GCC is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with GCC; see the file COPYING3. If not see
;; <http://www.gnu.org/licenses/>.
;; Leon is a single-issue processor.
(define_automaton "leon")
(define_cpu_unit "leon_memory" "leon")
(define_insn_reservation "leon_load" 1
(and (eq_attr "cpu" "leon") (eq_attr "type" "load,sload"))
"leon_memory")
;; Use a double reservation to work around the load pipeline hazard on UT699.
(define_insn_reservation "leon3_load" 1
(and (eq_attr "cpu" "leon3") (eq_attr "type" "load,sload"))
"leon_memory*2")
(define_insn_reservation "leon_store" 2
(and (eq_attr "cpu" "leon,leon3") (eq_attr "type" "store"))
"leon_memory*2")
;; This describes Gaisler Research's FPU
(define_automaton "grfpu")
(define_cpu_unit "grfpu_alu" "grfpu")
(define_cpu_unit "grfpu_ds" "grfpu")
(define_insn_reservation "leon_fp_alu" 4
(and (eq_attr "cpu" "leon,leon3") (eq_attr "type" "fp,fpcmp,fpmul"))
"grfpu_alu, nothing*3")
(define_insn_reservation "leon_fp_divs" 16
(and (eq_attr "cpu" "leon,leon3") (eq_attr "type" "fpdivs"))
"grfpu_ds*14, nothing*2")
(define_insn_reservation "leon_fp_divd" 17
(and (eq_attr "cpu" "leon,leon3") (eq_attr "type" "fpdivd"))
"grfpu_ds*15, nothing*2")
(define_insn_reservation "leon_fp_sqrts" 24
(and (eq_attr "cpu" "leon,leon3") (eq_attr "type" "fpsqrts"))
"grfpu_ds*22, nothing*2")
(define_insn_reservation "leon_fp_sqrtd" 25
(and (eq_attr "cpu" "leon,leon3") (eq_attr "type" "fpsqrtd"))
"grfpu_ds*23, nothing*2")
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