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Diffstat (limited to 'config/picochip/constraints.md')
-rw-r--r-- | config/picochip/constraints.md | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/config/picochip/constraints.md b/config/picochip/constraints.md new file mode 100644 index 0000000..2b100b6 --- /dev/null +++ b/config/picochip/constraints.md @@ -0,0 +1,68 @@ +;; 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/>. + +(define_constraint "I" + "4-bits signed value" + (and (match_code "const_int") + (match_test " ival >= -8 && ival< 8"))) + +(define_constraint "J" + "4-bits unsigned value" + (and (match_code "const_int") + (match_test "ival>=0 && ival < 16"))) + +(define_constraint "K" + "8-bits signed value" + (and (match_code "const_int") + (match_test " ival >= -128 && ival < 128"))) + +(define_constraint "M" + "4-bits magnitude" + (and (match_code "const_int") + (match_test " abs(ival) < 16"))) + +(define_constraint "N" + "10-bits signed value" + (and (match_code "const_int") + (match_test "ival >= -512 && ival < 512"))) + +(define_constraint "O" + "16-bits signed value" + (and (match_code "const_int") + (match_test " ival >= -32768 && ival < 32768 "))) + +(define_constraint "a" + "See if this is an absolute address in memory" + (and (match_code "mem") + (match_test "picochip_absolute_memory_operand(op,mode) == 1"))) + +(define_constraint "b" + "See if this is an address in memory, non-strict version" + (match_test "picochip_legitimate_address_p(mode,op,0) == 1")) + +(define_register_constraint "k" "FRAME_REGS" + "Frame regs") +(define_register_constraint "f" "PTR_REGS" + "Pointer regs") +(define_register_constraint "t" "TWIN_REGS" + "Twin regs") + |