;; Predicate definitions for Motorola 68000.
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;; Predicate definitions for Motorola 68000.
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;; Copyright (C) 2005, 2007 Free Software Foundation, Inc.
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;; Copyright (C) 2005, 2007 Free Software Foundation, Inc.
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;;
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;;
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;; This file is part of GCC.
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;; This file is part of GCC.
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;;
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;;
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;; GCC is free software; you can redistribute it and/or modify
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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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;; 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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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;; any later version.
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;;
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;;
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;; GCC is distributed in the hope that it will be useful,
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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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;; 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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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; GNU General Public License for more details.
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;;
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;;
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;; You should have received a copy of the GNU General Public License
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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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;; along with GCC; see the file COPYING3. If not see
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;; .
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;; .
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;; Special case of a general operand that's used as a source
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;; Special case of a general operand that's used as a source
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;; operand. Use this to permit reads from PC-relative memory when
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;; operand. Use this to permit reads from PC-relative memory when
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;; -mpcrel is specified.
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;; -mpcrel is specified.
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(define_predicate "general_src_operand"
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(define_predicate "general_src_operand"
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(match_code "const_int,const_double,const,symbol_ref,label_ref,subreg,reg,mem")
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(match_code "const_int,const_double,const,symbol_ref,label_ref,subreg,reg,mem")
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{
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{
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if (TARGET_PCREL
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if (TARGET_PCREL
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&& GET_CODE (op) == MEM
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&& GET_CODE (op) == MEM
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&& (GET_CODE (XEXP (op, 0)) == SYMBOL_REF
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&& (GET_CODE (XEXP (op, 0)) == SYMBOL_REF
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|| GET_CODE (XEXP (op, 0)) == LABEL_REF
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|| GET_CODE (XEXP (op, 0)) == LABEL_REF
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|| GET_CODE (XEXP (op, 0)) == CONST))
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|| GET_CODE (XEXP (op, 0)) == CONST))
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return 1;
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return 1;
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return general_operand (op, mode);
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return general_operand (op, mode);
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})
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})
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;; Special case of a nonimmediate operand that's used as a source. Use
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;; Special case of a nonimmediate operand that's used as a source. Use
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;; this to permit reads from PC-relative memory when -mpcrel is
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;; this to permit reads from PC-relative memory when -mpcrel is
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;; specified.
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;; specified.
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(define_predicate "nonimmediate_src_operand"
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(define_predicate "nonimmediate_src_operand"
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(match_code "subreg,reg,mem")
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(match_code "subreg,reg,mem")
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{
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{
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if (TARGET_PCREL && GET_CODE (op) == MEM
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if (TARGET_PCREL && GET_CODE (op) == MEM
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&& (GET_CODE (XEXP (op, 0)) == SYMBOL_REF
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&& (GET_CODE (XEXP (op, 0)) == SYMBOL_REF
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|| GET_CODE (XEXP (op, 0)) == LABEL_REF
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|| GET_CODE (XEXP (op, 0)) == LABEL_REF
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|| GET_CODE (XEXP (op, 0)) == CONST))
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|| GET_CODE (XEXP (op, 0)) == CONST))
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return 1;
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return 1;
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return nonimmediate_operand (op, mode);
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return nonimmediate_operand (op, mode);
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})
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})
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;; Special case of a memory operand that's used as a source. Use this
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;; Special case of a memory operand that's used as a source. Use this
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;; to permit reads from PC-relative memory when -mpcrel is specified.
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;; to permit reads from PC-relative memory when -mpcrel is specified.
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(define_predicate "memory_src_operand"
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(define_predicate "memory_src_operand"
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(match_code "subreg,mem")
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(match_code "subreg,mem")
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{
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{
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if (TARGET_PCREL && GET_CODE (op) == MEM
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if (TARGET_PCREL && GET_CODE (op) == MEM
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&& (GET_CODE (XEXP (op, 0)) == SYMBOL_REF
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&& (GET_CODE (XEXP (op, 0)) == SYMBOL_REF
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|| GET_CODE (XEXP (op, 0)) == LABEL_REF
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|| GET_CODE (XEXP (op, 0)) == LABEL_REF
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|| GET_CODE (XEXP (op, 0)) == CONST))
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|| GET_CODE (XEXP (op, 0)) == CONST))
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return 1;
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return 1;
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return memory_operand (op, mode);
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return memory_operand (op, mode);
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})
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})
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;; Similar to general_operand, but exclude stack_pointer_rtx.
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;; Similar to general_operand, but exclude stack_pointer_rtx.
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(define_predicate "not_sp_operand"
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(define_predicate "not_sp_operand"
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(match_code "subreg,reg,mem")
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(match_code "subreg,reg,mem")
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{
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{
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return op != stack_pointer_rtx && nonimmediate_operand (op, mode);
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return op != stack_pointer_rtx && nonimmediate_operand (op, mode);
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})
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})
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;; Predicate that accepts only a pc-relative address. This is needed
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;; Predicate that accepts only a pc-relative address. This is needed
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;; because pc-relative addresses don't satisfy the predicate
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;; because pc-relative addresses don't satisfy the predicate
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;; "general_src_operand".
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;; "general_src_operand".
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(define_predicate "pcrel_address"
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(define_predicate "pcrel_address"
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(match_code "symbol_ref,label_ref,const"))
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(match_code "symbol_ref,label_ref,const"))
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;; Accept integer operands in the range 0..0xffffffff. We have to
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;; Accept integer operands in the range 0..0xffffffff. We have to
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;; check the range carefully since this predicate is used in DImode
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;; check the range carefully since this predicate is used in DImode
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;; contexts. Also, we need some extra crud to make it work when
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;; contexts. Also, we need some extra crud to make it work when
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;; hosted on 64-bit machines.
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;; hosted on 64-bit machines.
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(define_predicate "const_uint32_operand"
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(define_predicate "const_uint32_operand"
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(match_code "const_int,const_double")
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(match_code "const_int,const_double")
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{
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{
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/* It doesn't make sense to ask this question with a mode that is
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/* It doesn't make sense to ask this question with a mode that is
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not larger than 32 bits. */
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not larger than 32 bits. */
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gcc_assert (GET_MODE_BITSIZE (mode) > 32);
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gcc_assert (GET_MODE_BITSIZE (mode) > 32);
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#if HOST_BITS_PER_WIDE_INT > 32
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#if HOST_BITS_PER_WIDE_INT > 32
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/* All allowed constants will fit a CONST_INT. */
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/* All allowed constants will fit a CONST_INT. */
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return (GET_CODE (op) == CONST_INT
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return (GET_CODE (op) == CONST_INT
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&& (INTVAL (op) >= 0 && INTVAL (op) <= 0xffffffffL));
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&& (INTVAL (op) >= 0 && INTVAL (op) <= 0xffffffffL));
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#else
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#else
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return (GET_CODE (op) == CONST_INT
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return (GET_CODE (op) == CONST_INT
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|| (GET_CODE (op) == CONST_DOUBLE && CONST_DOUBLE_HIGH (op) == 0));
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|| (GET_CODE (op) == CONST_DOUBLE && CONST_DOUBLE_HIGH (op) == 0));
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#endif
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#endif
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})
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})
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;; Accept integer operands in the range -0x80000000..0x7fffffff. We
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;; Accept integer operands in the range -0x80000000..0x7fffffff. We
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;; have to check the range carefully since this predicate is used in
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;; have to check the range carefully since this predicate is used in
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;; DImode contexts.
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;; DImode contexts.
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(define_predicate "const_sint32_operand"
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(define_predicate "const_sint32_operand"
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(match_code "const_int")
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(match_code "const_int")
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{
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{
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/* It doesn't make sense to ask this question with a mode that is
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/* It doesn't make sense to ask this question with a mode that is
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not larger than 32 bits. */
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not larger than 32 bits. */
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gcc_assert (GET_MODE_BITSIZE (mode) > 32);
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gcc_assert (GET_MODE_BITSIZE (mode) > 32);
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/* All allowed constants will fit a CONST_INT. */
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/* All allowed constants will fit a CONST_INT. */
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return (GET_CODE (op) == CONST_INT
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return (GET_CODE (op) == CONST_INT
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&& (INTVAL (op) >= (-0x7fffffff - 1) && INTVAL (op) <= 0x7fffffff));
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&& (INTVAL (op) >= (-0x7fffffff - 1) && INTVAL (op) <= 0x7fffffff));
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})
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})
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;; Return true if X is a valid comparison operator for the dbcc
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;; Return true if X is a valid comparison operator for the dbcc
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;; instruction. Note it rejects floating point comparison
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;; instruction. Note it rejects floating point comparison
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;; operators. (In the future we could use Fdbcc). It also rejects
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;; operators. (In the future we could use Fdbcc). It also rejects
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;; some comparisons when CC_NO_OVERFLOW is set.
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;; some comparisons when CC_NO_OVERFLOW is set.
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(define_predicate "valid_dbcc_comparison_p"
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(define_predicate "valid_dbcc_comparison_p"
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(and (match_code "eq,ne,gtu,ltu,geu,leu,gt,lt,ge,le")
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(and (match_code "eq,ne,gtu,ltu,geu,leu,gt,lt,ge,le")
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(match_test "valid_dbcc_comparison_p_2 (op, mode)")))
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(match_test "valid_dbcc_comparison_p_2 (op, mode)")))
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(define_predicate "m68k_cstore_comparison_operator"
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(define_predicate "m68k_cstore_comparison_operator"
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(if_then_else (match_test "TARGET_68881")
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(if_then_else (match_test "TARGET_68881")
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(match_operand 0 "comparison_operator")
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(match_operand 0 "comparison_operator")
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(match_operand 0 "ordered_comparison_operator")))
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(match_operand 0 "ordered_comparison_operator")))
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;; Check for sign_extend or zero_extend. Used for bit-count operands.
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;; Check for sign_extend or zero_extend. Used for bit-count operands.
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(define_predicate "extend_operator"
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(define_predicate "extend_operator"
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(match_code "sign_extend,zero_extend"))
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(match_code "sign_extend,zero_extend"))
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;; Returns true if OP is either a symbol reference or a sum of a
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;; Returns true if OP is either a symbol reference or a sum of a
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;; symbol reference and a constant. This predicate is for "raw"
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;; symbol reference and a constant. This predicate is for "raw"
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;; symbol references not yet processed by legitimize*_address,
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;; symbol references not yet processed by legitimize*_address,
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;; hence we do not handle UNSPEC_{XGOT, TLS, XTLS} here.
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;; hence we do not handle UNSPEC_{XGOT, TLS, XTLS} here.
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(define_predicate "symbolic_operand"
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(define_predicate "symbolic_operand"
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(match_code "symbol_ref,label_ref,const")
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(match_code "symbol_ref,label_ref,const")
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{
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{
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switch (GET_CODE (op))
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switch (GET_CODE (op))
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{
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{
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case SYMBOL_REF:
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case SYMBOL_REF:
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case LABEL_REF:
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case LABEL_REF:
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return true;
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return true;
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case CONST:
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case CONST:
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op = XEXP (op, 0);
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op = XEXP (op, 0);
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return ((GET_CODE (XEXP (op, 0)) == SYMBOL_REF
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return ((GET_CODE (XEXP (op, 0)) == SYMBOL_REF
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|| GET_CODE (XEXP (op, 0)) == LABEL_REF)
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|| GET_CODE (XEXP (op, 0)) == LABEL_REF)
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&& GET_CODE (XEXP (op, 1)) == CONST_INT);
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&& GET_CODE (XEXP (op, 1)) == CONST_INT);
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#if 0 /* Deleted, with corresponding change in m68k.h,
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#if 0 /* Deleted, with corresponding change in m68k.h,
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so as to fit the specs. No CONST_DOUBLE is ever symbolic. */
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so as to fit the specs. No CONST_DOUBLE is ever symbolic. */
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case CONST_DOUBLE:
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case CONST_DOUBLE:
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return GET_MODE (op) == mode;
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return GET_MODE (op) == mode;
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#endif
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#endif
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default:
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default:
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return false;
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return false;
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}
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}
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})
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})
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;; A constant that can be used the address in a call insn
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;; A constant that can be used the address in a call insn
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(define_predicate "const_call_operand"
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(define_predicate "const_call_operand"
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(ior (match_operand 0 "const_int_operand")
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(ior (match_operand 0 "const_int_operand")
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(and (match_test "m68k_symbolic_call != NULL")
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(and (match_test "m68k_symbolic_call != NULL")
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(match_operand 0 "symbolic_operand"))))
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(match_operand 0 "symbolic_operand"))))
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;; An operand that can be used as the address in a call insn.
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;; An operand that can be used as the address in a call insn.
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(define_predicate "call_operand"
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(define_predicate "call_operand"
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(ior (match_operand 0 "const_call_operand")
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(ior (match_operand 0 "const_call_operand")
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(match_operand 0 "register_operand")))
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(match_operand 0 "register_operand")))
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;; A constant that can be used the address in a sibcall insn
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;; A constant that can be used the address in a sibcall insn
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(define_predicate "const_sibcall_operand"
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(define_predicate "const_sibcall_operand"
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(ior (match_operand 0 "const_int_operand")
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(ior (match_operand 0 "const_int_operand")
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(and (match_test "m68k_symbolic_jump != NULL")
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(and (match_test "m68k_symbolic_jump != NULL")
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(match_operand 0 "symbolic_operand"))))
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(match_operand 0 "symbolic_operand"))))
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;; An operand that can be used as the address in a sibcall insn.
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;; An operand that can be used as the address in a sibcall insn.
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(define_predicate "sibcall_operand"
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(define_predicate "sibcall_operand"
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(ior (match_operand 0 "const_sibcall_operand")
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(ior (match_operand 0 "const_sibcall_operand")
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(and (match_code "reg")
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(and (match_code "reg")
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(match_test "REGNO (op) == STATIC_CHAIN_REGNUM"))))
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(match_test "REGNO (op) == STATIC_CHAIN_REGNUM"))))
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;; TODO: Add a comment here.
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;; TODO: Add a comment here.
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(define_predicate "post_inc_operand"
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(define_predicate "post_inc_operand"
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(and (match_code "mem")
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(and (match_code "mem")
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(match_test "GET_CODE (XEXP (op, 0)) == POST_INC")))
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(match_test "GET_CODE (XEXP (op, 0)) == POST_INC")))
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;; TODO: Add a comment here.
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;; TODO: Add a comment here.
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(define_predicate "pre_dec_operand"
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(define_predicate "pre_dec_operand"
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(and (match_code "mem")
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(and (match_code "mem")
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(match_test "GET_CODE (XEXP (op, 0)) == PRE_DEC")))
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(match_test "GET_CODE (XEXP (op, 0)) == PRE_DEC")))
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;; A zero constant.
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;; A zero constant.
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(define_predicate "const0_operand"
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(define_predicate "const0_operand"
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(and (match_code "const_int,const_double,const_vector")
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(and (match_code "const_int,const_double,const_vector")
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(match_test "op == CONST0_RTX (mode)")))
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(match_test "op == CONST0_RTX (mode)")))
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;; A one constant (operand for conditional_trap).
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;; A one constant (operand for conditional_trap).
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(define_predicate "const1_operand"
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(define_predicate "const1_operand"
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(and (match_code "const_int")
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(and (match_code "const_int")
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(match_test "op == const1_rtx")))
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(match_test "op == const1_rtx")))
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;; A valid operand for a HImode or QImode conditional operation.
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;; A valid operand for a HImode or QImode conditional operation.
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;; ColdFire has tst patterns, but not cmp patterns.
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;; ColdFire has tst patterns, but not cmp patterns.
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(define_predicate "m68k_subword_comparison_operand"
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(define_predicate "m68k_subword_comparison_operand"
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(if_then_else (match_test "TARGET_COLDFIRE")
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(if_then_else (match_test "TARGET_COLDFIRE")
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(and (match_code "const_int")
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(and (match_code "const_int")
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(match_test "op == const0_rtx"))
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(match_test "op == const0_rtx"))
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(match_operand 0 "general_src_operand")))
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(match_operand 0 "general_src_operand")))
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;; An operand for movsi_const0 pattern.
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;; An operand for movsi_const0 pattern.
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(define_predicate "movsi_const0_operand"
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(define_predicate "movsi_const0_operand"
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(and (match_operand 0 "nonimmediate_operand")
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(and (match_operand 0 "nonimmediate_operand")
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(match_test "(TARGET_68010 || TARGET_COLDFIRE)
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(match_test "(TARGET_68010 || TARGET_COLDFIRE)
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|| !(MEM_P (op) && MEM_VOLATILE_P (op))")))
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|| !(MEM_P (op) && MEM_VOLATILE_P (op))")))
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;; A non-symbolic call operand.
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;; A non-symbolic call operand.
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;; We need to special case 'const_int' to ignore its mode while matching.
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;; We need to special case 'const_int' to ignore its mode while matching.
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(define_predicate "non_symbolic_call_operand"
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(define_predicate "non_symbolic_call_operand"
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(and (match_operand 0 "call_operand")
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(and (match_operand 0 "call_operand")
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(ior (and (match_code "const_int")
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(ior (and (match_code "const_int")
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(match_test "!symbolic_operand (op, mode)"))
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(match_test "!symbolic_operand (op, mode)"))
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(match_test "!symbolic_operand (op,mode)"))))
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(match_test "!symbolic_operand (op,mode)"))))
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;; Special case of general_src_operand, which rejects a few fp
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;; Special case of general_src_operand, which rejects a few fp
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;; constants (which we prefer in registers) before reload.
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;; constants (which we prefer in registers) before reload.
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(define_predicate "fp_src_operand"
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(define_predicate "fp_src_operand"
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(match_operand 0 "general_src_operand")
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(match_operand 0 "general_src_operand")
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{
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{
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return !CONSTANT_P (op)
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return !CONSTANT_P (op)
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|| (TARGET_68881
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|| (TARGET_68881
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&& (!standard_68881_constant_p (op)
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&& (!standard_68881_constant_p (op)
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|| reload_in_progress
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|| reload_in_progress
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|| reload_completed));
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|| reload_completed));
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})
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})
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