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jeremybenn |
;;- Predicate definitions for the pdp11 for GNU C compiler
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;; Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2004, 2005
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;; 2007, 2008, 2010 Free Software Foundation, Inc.
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;; Contributed by Michael K. Gschwind (mike@vlsivie.tuwien.ac.at).
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;; This file is part of GCC.
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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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;; 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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;; 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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;; .
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;; Match CONST_DOUBLE zero for tstd/tstf.
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(define_predicate "register_or_const0_operand"
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(ior (match_operand 0 "register_operand")
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(match_test "op == CONST0_RTX (GET_MODE (op))")))
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;; Accept integer arguments in the range -4..-2 and 2..4, which are the
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;; shift counts for which we unroll a shift. This matches the rule for
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;; the "O" constraint.
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(define_predicate "expand_shift_operand"
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(match_code "const_int")
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{
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int sh;
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sh = INTVAL (op);
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return (abs (sh) > 1 && abs (sh) <= 4);
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})
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;; Accept anything general_operand accepts, except that registers must
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;; be FPU registers.
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(define_predicate "float_operand"
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(if_then_else (match_code "reg")
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(ior
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(match_test "REGNO_REG_CLASS (REGNO (op)) == LOAD_FPU_REGS")
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(match_test "REGNO_REG_CLASS (REGNO (op)) == NO_LOAD_FPU_REGS"))
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(match_test "general_operand (op, mode)")))
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;; Accept anything nonimmediate_operand accepts, except that registers must
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;; be FPU registers.
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(define_predicate "float_nonimm_operand"
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(if_then_else (match_code "reg")
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(ior
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(match_test "REGNO_REG_CLASS (REGNO (op)) == LOAD_FPU_REGS")
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(match_test "REGNO_REG_CLASS (REGNO (op)) == NO_LOAD_FPU_REGS"))
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(match_test "nonimmediate_operand (op, mode)")))
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