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Diffstat (limited to 'config/picochip/dfa_space.md')
-rw-r--r-- | config/picochip/dfa_space.md | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/config/picochip/dfa_space.md b/config/picochip/dfa_space.md new file mode 100644 index 0000000..9a6d8c2 --- /dev/null +++ b/config/picochip/dfa_space.md @@ -0,0 +1,43 @@ +;; GCC machine description for picochip +;; Copyright (C) 2008 Free Software Foundation, Inc. +;; Contributed by picoChip Designs Ltd (http://www.picochip.com) +;; Maintained by Daniel Towner (dant@picochip.com) and Hariharan +;; Sandanagobalane (hariharan@picochip.com) +;; +;; 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/>. + +;; The following DFA description schedules instructions for space. The +;; schedule seeks to avoid stall cycles (e.g., memory load), but the +;; instructions are not VLIW packed (whenever instructions are packed +;; together, an additional byte is used to denote this, which +;; increases the code size). + +;; No special handling of the long constants is necessary (as in +;; dfa_speed.md), since VLIW packing is not used. + +;; Memory instructions stall for one cycle. All other instructions +;; complete ready for the next cycle. + +(define_insn_reservation "nonStallInsn" 1 + (and (eq_attr "schedType" "space") + (eq_attr "type" "!mem")) + "slot0+slot1+slot2") + +(define_insn_reservation "stallInsn" 2 + (and (eq_attr "schedType" "space") + (eq_attr "type" "mem")) + "slot0+slot1+slot2") |