1;; Operand and operator predicates for the GCC CRIS port.
2;; Copyright (C) 2005-2013 Free Software Foundation, Inc.
3
4;; This file is part of GCC.
5;;
6;; GCC is free software; you can redistribute it and/or modify
7;; it under the terms of the GNU General Public License as published by
8;; the Free Software Foundation; either version 3, or (at your option)
9;; any later version.
10;;
11;; GCC is distributed in the hope that it will be useful,
12;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14;; GNU General Public License for more details.
15;;
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/>.
19
20
21;; Operator predicates.
22
23(define_predicate "cris_orthogonal_operator"
24  (match_code "plus, minus, ior, and, umin"))
25
26(define_predicate "cris_commutative_orth_op"
27  (match_code "plus, ior, and, umin"))
28
29;; By the name, you might think we should include MULT.  We don't because
30;; it doesn't accept the same addressing modes as the others (only
31;; registers) and there's also the problem of handling TARGET_MUL_BUG.
32
33(define_predicate "cris_operand_extend_operator"
34  (match_code "plus, minus, umin"))
35
36(define_predicate "cris_additive_operand_extend_operator"
37  (match_code "plus, minus"))
38
39(define_predicate "cris_extend_operator"
40  (match_code "zero_extend, sign_extend"))
41
42(define_predicate "cris_plus_or_bound_operator"
43  (match_code "plus, umin"))
44
45;; Used as an operator to get a handle on a already-known-valid MEM rtx:es
46;; (no need to validate the address), where some address expression parts
47;; have their own match_operand.
48
49(define_predicate "cris_mem_op"
50  (match_code "mem"))
51
52(define_predicate "cris_load_multiple_op"
53  (and (match_code "parallel")
54       (match_test "cris_movem_load_rest_p (op, 0)")))
55
56(define_predicate "cris_store_multiple_op"
57  (and (match_code "parallel")
58       (match_test "cris_store_multiple_op_p (op)")))
59
60
61;; Operand helper predicates.
62
63(define_predicate "cris_bdap_const_operand"
64  (and (match_code "label_ref, symbol_ref, const_int, const_double, const")
65       (ior (not (match_test "flag_pic"))
66	    (match_test "cris_valid_pic_const (op, true)"))))
67
68(define_predicate "cris_simple_address_operand"
69  (ior (match_operand:SI 0 "register_operand")
70       (and (match_code "post_inc")
71	    (match_test "register_operand (XEXP (op, 0), Pmode)"))))
72
73(define_predicate "cris_simple_operand"
74  (ior (match_operand 0 "register_operand")
75       (and (match_code "mem")
76	    (match_test "cris_simple_address_operand (XEXP (op, 0),
77						      Pmode)"))))
78
79;; The caller needs to use :SI.
80(define_predicate "cris_bdap_sign_extend_operand"
81; Disabled until <URL:http://gcc.gnu.org/ml/gcc-patches/2005-10/msg01376.html>
82; or <URL:http://gcc.gnu.org/ml/gcc-patches/2005-10/msg00940.html> is committed.
83  (match_test "0"))
84;  (and (match_code "sign_extend")
85;       (and (match_test "MEM_P (XEXP (op, 0))")
86;	    (match_test "cris_simple_address_operand (XEXP (XEXP (op, 0), 0),
87;						      Pmode)"))))
88
89;; FIXME: Should not have to test for 1.
90(define_predicate "cris_scale_int_operand"
91  (and (match_code "const_int")
92       (ior (ior (match_test "op == GEN_INT (4)")
93		 (match_test "op == const2_rtx"))
94	    (match_test "op == const1_rtx"))))
95
96;; FIXME: Should be able to assume (reg int).
97(define_predicate "cris_biap_mult_operand"
98  (and (match_code "mult")
99       (ior (and (match_test "register_operand (XEXP (op, 0), Pmode)")
100		 (match_test "cris_scale_int_operand (XEXP (op, 1), Pmode)"))
101	    (and (match_test "cris_scale_int_operand (XEXP (op, 0), Pmode)")
102		 (match_test "register_operand (XEXP (op, 1), Pmode)")))))
103
104
105;; Operand predicates.
106
107;; This checks a part of an address, the one that is not a plain register
108;; for an addressing mode using BDAP.
109;; Allowed operands are either:
110;; a) a register
111;; b) a CONST operand (but not a symbol when generating PIC)
112;; c) a [r] or [r+] in SImode, or sign-extend from HI or QI.
113
114(define_predicate "cris_bdap_operand"
115  (ior (match_operand 0 "cris_bdap_const_operand")
116       (ior (match_operand:SI 0 "cris_simple_operand")
117	    (match_operand:SI 0 "cris_bdap_sign_extend_operand"))))
118
119;; This is similar to cris_bdap_operand:
120;; It checks a part of an address, the one that is not a plain register
121;; for an addressing mode using BDAP or BIAP.
122;; Allowed operands are either:
123;; a) a register
124;; b) a CONST operand (but not a symbol when generating PIC)
125;; c) a mult of (1, 2 or 4) and a register
126;; d) a [r] or [r+] in SImode, or sign-extend from HI or QI.  */
127
128(define_predicate "cris_bdap_biap_operand"
129  (ior (match_operand 0 "cris_bdap_operand")
130       (match_operand 0 "cris_biap_mult_operand")))
131
132;; Since with -fPIC, not all symbols are valid PIC symbols or indeed
133;; general_operands, we have to have a predicate that matches it for the
134;; "movsi" expander.
135;; FIXME: Can s/special_// when PR 20413 is fixed.
136
137(define_special_predicate "cris_general_operand_or_symbol"
138  (ior (match_operand 0 "general_operand")
139       (and (match_code "const, symbol_ref, label_ref")
140       	    ; The following test is actually just an assertion.
141	    (match_test "cris_pic_symbol_type_of (op) != cris_no_symbol"))))
142
143;; A predicate for the anon movsi expansion, one that fits a PCREL
144;; operand as well as general_operand.
145
146(define_special_predicate "cris_general_operand_or_pic_source"
147  (ior (match_operand 0 "general_operand")
148       (and (match_test "flag_pic")
149	    (match_test "cris_valid_pic_const (op, false)"))))
150
151;; Since a PLT symbol is not a general_operand, we have to have a
152;; predicate that matches it when we need it.  We use this in the expanded
153;; "call" and "call_value" anonymous patterns.
154
155(define_predicate "cris_nonmemory_operand_or_callable_symbol"
156  (ior (match_operand 0 "nonmemory_operand")
157       (and (match_code "const")
158	    (and
159	     (match_test "GET_CODE (XEXP (op, 0)) == UNSPEC")
160	     (ior
161	      (match_test "XINT (XEXP (op, 0), 1) == CRIS_UNSPEC_PLT_PCREL")
162	      (match_test "XINT (XEXP (op, 0), 1) == CRIS_UNSPEC_PCREL"))))))
163
164;; This matches a (MEM (general_operand)) or
165;; (MEM (cris_general_operand_or_symbol)).  The second one isn't a valid
166;; memory_operand, so we need this predicate to recognize call
167;; destinations before we change them to a PLT operand (by wrapping in
168;; UNSPEC CRIS_UNSPEC_PLT).
169
170(define_predicate "cris_mem_call_operand"
171  (and (match_code "mem")
172       (ior (match_operand 0 "memory_operand")
173	    (match_test "cris_general_operand_or_symbol (XEXP (op, 0),
174							 Pmode)"))))
175