gcc/config/pdp11/predicates.md

;; This file is part of GCC.

;; GCC is free software; you can redistribute it and/or modify ;; it under the terms of the GNU General Public License as published by ;; the Free Software Foundation; either version 3, or (at your option) ;; any later version.

;; GCC is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License ;; along with GCC; see the file COPYING3. If not see ;; http://www.gnu.org/licenses/.

;; Match CONST_DOUBLE zero for tstd/tstf. (define_predicate “register_or_const0_operand” (ior (match_operand 0 “register_operand”) (match_test “op == CONST0_RTX (GET_MODE (op))”)))

;; Accept integer arguments in the range 1..3, which are the ;; shift counts for which we unroll a shift. This matches the rule for ;; the “O” constraint. (define_predicate “expand_shift_operand” (and (match_code “const_int”) (match_test “(unsigned) INTVAL (op) < 4”)))

;; Accept integer arguments +1 and -1, for which add and sub can be ;; done as inc or dec instructions. This matches the rule for the ;; L and M constraints. (define_predicate “incdec_operand” (and (match_code “const_int”) (ior (match_test “INTVAL (op) == -1”) (match_test “INTVAL (op) == 1”))))

;; Accept anything general_operand accepts, except that registers must ;; be FPU registers. (define_predicate “float_operand” (if_then_else (match_code “reg”) (ior (match_test “REGNO_REG_CLASS (REGNO (op)) == LOAD_FPU_REGS”) (match_test “REGNO_REG_CLASS (REGNO (op)) == NO_LOAD_FPU_REGS”)) (match_operand 0 “general_operand”)))

;; Accept anything nonimmediate_operand accepts, except that registers must ;; be FPU registers. (define_predicate “float_nonimm_operand” (if_then_else (match_code “reg”) (ior (match_test “REGNO_REG_CLASS (REGNO (op)) == LOAD_FPU_REGS”) (match_test “REGNO_REG_CLASS (REGNO (op)) == NO_LOAD_FPU_REGS”)) (match_operand 0 “nonimmediate_operand”)))

;; Accept any comparison valid for CCNZmode (define_predicate “ccnz_operator” (match_code “eq,ne,ge,lt”))