73 lines
2.5 KiB
Markdown
73 lines
2.5 KiB
Markdown
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;; GCC machine description for picochip
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;; Copyright (C) 2008 Free Software Foundation, Inc.
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;; Contributed by picoChip Designs Ltd (http://www.picochip.com)
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;; Maintained by Daniel Towner (dant@picochip.com) and Hariharan
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;; Sandanagobalane (hariharan@picochip.com)
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;;
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;; This file is part of GCC.
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;;
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;; GCC is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;;
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;; GCC is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GCC; see the file COPYING3. If not, see
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;; <http://www.gnu.org/licenses/>.
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(define_predicate "picochip_register_or_immediate_operand"
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(ior (match_operand 0 "register_operand")
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(match_operand 0 "immediate_operand")))
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(define_predicate "power_of_2_imm_operand"
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(match_code "const_int")
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{
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if (GET_CODE (op) == CONST_INT)
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{
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if (exact_log2 (INTVAL (op)) <= 16 && exact_log2 (INTVAL (op)) > 0)
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return 1;
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}
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return 0;
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})
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;; Limit the comparison operators to a selected subset.
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(define_predicate "picochip_supported_comparison_operator"
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(and (match_operand 0 "comparison_operator")
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(match_code "ne,eq,ge,geu,lt,ltu")))
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(define_predicate "picochip_peephole_comparison_operator"
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(and (match_operand 0 "comparison_operator")
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(match_code "ne,eq")))
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;; Allow selected arithmetic operators to apply a shift to their first
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;; operands
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(define_predicate "picochip_first_op_shift_operator"
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(match_code "and,plus,minus,ior,xor"))
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;; The same as the previous predicate, but only allowing those
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;; operators which can accept an immediate.
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(define_predicate "picochip_first_op_shift_operator_imm"
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(match_code "plus,minus"))
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;; Predicate on a J type integer.
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(define_predicate "picochip_J_operand"
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(match_operand 0 "immediate_operand")
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{
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return (CONST_INT == GET_CODE(op) &&
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picochip_const_ok_for_letter_p (INTVAL(op), 'J'));
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})
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;; Is the operand suitable for use in a compare?
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(define_predicate "picochip_comparison_operand"
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(ior (match_operand 0 "register_operand")
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(and (match_operand 0 "immediate_operand")
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(match_test "picochip_const_ok_for_letter_p(INTVAL(op), 'O')"))))
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