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authorpbrook <pbrook@138bc75d-0d04-0410-961f-82ee72b054a4>2008-09-03 12:19:34 +0000
committerpbrook <pbrook@138bc75d-0d04-0410-961f-82ee72b054a4>2008-09-03 12:19:34 +0000
commit592f00719337f50b60dd86fd1254dbaf76a2ce35 (patch)
treebe85b674ec314445dad27a66352ad8ebf84316e7 /gcc/config/picochip/dfa_space.md
parent8372e9ea342011a14a3a94ff3581610a8463f493 (diff)
downloadgcc-592f00719337f50b60dd86fd1254dbaf76a2ce35.tar.gz
Move picochip directory to correct location.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@139934 138bc75d-0d04-0410-961f-82ee72b054a4
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+;; 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")