1 ;; GCC machine description for picochip
2 ;; Copyright (C) 2008 Free Software Foundation, Inc.
3 ;; Contributed by Picochip Ltd (http://www.picochip.com)
4 ;; Maintained by Daniel Towner (dant@picochip.com) and Hariharan
5 ;; Sandanagobalane (hariharan@picochip.com)
7 ;; This file is part of GCC.
9 ;; GCC is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 3, or (at your option)
14 ;; GCC is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GCC; see the file COPYING3. If not, see
21 ;; <http://www.gnu.org/licenses/>.
23 ;; The following DFA description schedules instructions for space. The
24 ;; schedule seeks to avoid stall cycles (e.g., memory load), but the
25 ;; instructions are not VLIW packed (whenever instructions are packed
26 ;; together, an additional byte is used to denote this, which
27 ;; increases the code size).
29 ;; No special handling of the long constants is necessary (as in
30 ;; dfa_speed.md), since VLIW packing is not used.
32 ;; Memory instructions stall for one cycle. All other instructions
33 ;; complete ready for the next cycle.
35 (define_insn_reservation "nonStallInsn" 1
36 (and (eq_attr "schedType" "space")
37 (eq_attr "type" "!mem"))
40 (define_insn_reservation "stallInsn" 2
41 (and (eq_attr "schedType" "space")
42 (eq_attr "type" "mem"))