65 lines
2.3 KiB
Markdown
65 lines
2.3 KiB
Markdown
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;; Predicate definitions for Xilinx MicroBlaze
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;; Copyright 2009, 2010 Free Software Foundation, Inc.
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;;
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;; Contributed by Michael Eager <eager@eagercon.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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;; Return whether OP can be used as an operands in arithmetic.
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(define_predicate "arith_operand"
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(ior (match_code "const_int,const_double")
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(match_operand 0 "register_operand")))
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(define_predicate "arith_operand32"
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(ior (match_operand 0 "register_operand")
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(and (match_code "const_int,const_double")
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(match_test "LARGE_INT (op)"))))
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(define_predicate "const_0_operand"
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(and (match_code "const_int,const_double")
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(match_test "op == CONST0_RTX (GET_MODE (op))")))
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;; Return whether OP is a register or the constant 0.
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(define_predicate "reg_or_0_operand"
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(ior (match_operand 0 "const_0_operand")
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(match_operand 0 "register_operand")))
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;; Return if the operand is either the PC or a label_ref.
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(define_special_predicate "pc_or_label_operand"
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(ior (match_code "pc,label_ref")
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(and (match_code "symbol_ref")
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(match_test "!(strcmp ((XSTR (op, 0)), \"_stack_overflow_exit\"))"))))
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;; Test for valid call operand
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(define_predicate "call_insn_operand"
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(match_test "CALL_INSN_OP (op)"))
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;; Return if OPERAND is valid as a source operand for a move instruction.
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(define_predicate "move_operand"
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(and (
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not (
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and (match_code "plus")
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(not (match_test "(GET_CODE (XEXP (op, 0)) == REG) ^ (GET_CODE (XEXP (op,1)) == REG)"))
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)
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)
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(match_operand 0 "general_operand")))
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;; Test for valid PIC call operand
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(define_predicate "call_insn_plt_operand"
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(match_test "PLT_ADDR_P (op)"))
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