;; 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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;; 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.
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;; symbol reference and a constant.
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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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;; 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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