1 ;; Predicate definitions for DEC VAX.
2 ;; Copyright (C) 2007-2023 Free Software Foundation, Inc.
4 ;; This file is part of GCC.
6 ;; GCC is free software; you can redistribute it and/or modify it under
7 ;; the terms of the GNU General Public License as published by the Free
8 ;; Software Foundation; either version 3, or (at your option) any later
11 ;; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 ;; WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 ;; You should have received a copy of the GNU General Public License
17 ;; along with GCC; see the file COPYING3. If not see
18 ;; <http://www.gnu.org/licenses/>.
20 ;; Return true if OP is a constant zero operand.
21 (define_predicate "const_zero_operand"
22 (match_test "op == CONST0_RTX (mode)"))
24 ;; Special case of a symbolic operand that's used as a
27 (define_predicate "symbolic_operand"
28 (match_code "const,symbol_ref,label_ref"))
30 (define_predicate "pic_symbolic_operand"
31 (and (match_code "const,symbol_ref,label_ref")
32 (match_test "!flag_pic
33 || vax_acceptable_pic_operand_p (op, false, true)")))
35 (define_predicate "nonsymbolic_operand"
36 (and (ior (match_test "!flag_pic")
37 (not (match_operand 0 "symbolic_operand")))
38 (match_operand 0 "general_operand" "")))
40 (define_predicate "non_pic_external_memory_operand"
43 rtx addr = XEXP (op, 0);
45 addr = XEXP (addr, 0);
46 if (GET_CODE (addr) == PLUS)
47 addr = XEXP (addr, 1);
49 addr = XEXP (addr, 0);
50 if (GET_CODE (addr) == PLUS)
51 addr = XEXP (addr, 1);
52 return (symbolic_operand (addr, SImode)
53 && !vax_acceptable_pic_operand_p (addr, true, true));
56 (define_predicate "indirect_memory_operand"
62 if (GET_CODE (op) == PLUS)
67 (define_predicate "indexed_memory_operand"
70 rtx addr = XEXP (op, 0);
71 return GET_CODE (addr) != PRE_DEC && GET_CODE (addr) != POST_INC
72 && mode_dependent_address_p (addr, MEM_ADDR_SPACE (op));
75 (define_predicate "illegal_blk_memory_operand"
76 (and (match_code "mem")
77 (ior (and (match_test "flag_pic")
78 (match_operand 0 "non_pic_external_memory_operand" ""))
79 (ior (match_operand 0 "indexed_memory_operand" "")
80 (ior (match_operand 0 "indirect_memory_operand" "")
81 (match_test "GET_CODE (XEXP (op, 0)) == PRE_DEC"))))))
83 (define_predicate "illegal_addsub_di_memory_operand"
84 (and (match_code "mem")
85 (ior (and (match_test "flag_pic")
86 (match_operand 0 "non_pic_external_memory_operand" ""))
87 (ior (match_operand 0 "indexed_memory_operand" "")
88 (ior (match_operand 0 "indirect_memory_operand" "")
89 (match_test "GET_CODE (XEXP (op, 0)) == PRE_DEC"))))))
91 (define_predicate "nonimmediate_addsub_di_operand"
92 (and (match_code "subreg,reg,mem")
93 (and (match_operand:DI 0 "nonimmediate_operand" "")
94 (not (match_operand:DI 0 "illegal_addsub_di_memory_operand")))))
96 (define_predicate "general_addsub_di_operand"
97 (and (match_code "const_int,const_double,subreg,reg,mem")
98 (and (match_operand:DI 0 "general_operand" "")
99 (not (match_operand:DI 0 "illegal_addsub_di_memory_operand")))))
101 ;; Return 1 if the operand is in volatile memory. Note that during the
102 ;; RTL generation phase, `memory_operand' does not return TRUE for
103 ;; volatile memory references. So this function allows us to recognize
104 ;; volatile references where it's safe.
105 (define_predicate "volatile_mem_operand"
106 (and (match_code "mem")
107 (match_test "MEM_VOLATILE_P (op)")
108 (if_then_else (match_test "reload_completed")
109 (match_operand 0 "memory_operand")
110 (match_test "memory_address_p (mode, XEXP (op, 0))"))))
112 ;; Return 1 if the operand is a volatile or non-volatile memory operand.
113 (define_predicate "any_memory_operand"
114 (ior (match_operand 0 "memory_operand")
115 (match_operand 0 "volatile_mem_operand")))
117 ;; Return true if OP is a comparison operator that requires at least CCmode.
118 (define_predicate "vax_cc_comparison_operator"
119 (match_code "geu,gtu,leu,ltu"))
121 ;; Return true if OP is a comparison operator that requires at least CCNmode.
122 (define_predicate "vax_ccn_comparison_operator"
123 (match_code "ge,lt"))
125 ;; Return true if OP is a comparison operator that requires at least CCNZmode.
126 (define_predicate "vax_ccnz_comparison_operator"
127 (match_code "gt,le"))
129 ;; Return true if OP is a comparison operator that requires at least CCZmode.
130 (define_predicate "vax_ccz_comparison_operator"
131 (match_code "ne,eq"))