1 ;; Constraint definitions for TI C6X.
2 ;; Copyright (C) 2010-2013 Free Software Foundation, Inc.
3 ;; Contributed by Andrew Jenner <andrew@codesourcery.com>
4 ;; Contributed by Bernd Schmidt <bernds@codesourcery.com>
5 ;; Contributed by CodeSourcery.
7 ;; This file is part of GCC.
9 ;; GCC is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 3, or (at your option)
14 ;; GCC is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GCC; see the file COPYING3. If not see
21 ;; <http://www.gnu.org/licenses/>.
23 (define_register_constraint "a" "A_REGS"
24 "Register file A (A0--A31).")
26 (define_register_constraint "b" "B_REGS"
27 "Register file B (B0--B31).")
29 (define_register_constraint "A" "PREDICATE_A_REGS"
30 "Predicate registers in register file A (A0--A2 on C64X and higher,
31 A1 and A2 otherwise).")
33 (define_register_constraint "B" "PREDICATE_B_REGS"
34 "Predicate registers in register file B (B0--B2).")
36 (define_register_constraint "C" "CALL_USED_B_REGS"
37 "A call-used register in register file B (B0--B9, B16--B31).")
39 (define_register_constraint "Da" "NONPREDICATE_A_REGS"
40 "Register file A, excluding predicate registers (A3--A31, plus A0 if
41 not C64X or higher).")
43 (define_register_constraint "Db" "NONPREDICATE_B_REGS"
44 "Register file B, excluding predicate registers (B3--B31).")
46 (define_register_constraint "Z" "PICREG"
47 "Register B14 (aka DP).")
49 (define_register_constraint "z" "SPREG"
50 "Register B15 (aka SP).")
52 (define_constraint "Iu4"
53 "Integer constant in the range 0 @dots{} 15, aka ucst4."
54 (and (match_code "const_int")
55 (match_test "ival >= 0 && ival <= 15")))
57 (define_constraint "Iu5"
58 "Integer constant in the range 0 @dots{} 31, aka ucst5."
59 (and (match_code "const_int")
60 (match_test "ival >= 0 && ival <= 31")))
62 (define_constraint "In5"
63 "Integer constant in the range @minus{}31 @dots{} 0, negation of ucst5."
64 (and (match_code "const_int")
65 (match_test "ival >= -31 && ival <= 0")))
67 (define_constraint "Is5"
68 "Integer constant in the range @minus{}16 @dots{} 15, aka scst5."
69 (and (match_code "const_int")
70 (match_test "ival >= -16 && ival <= 15")))
72 (define_constraint "I5x"
73 "Integer constant that can be the operand of an ADDA or a SUBA insn."
74 (and (match_code "const_int")
75 (match_test "(ival >= -31 && ival <= 31)
76 || ((ival & 1) == 0 && ival >= -62 && ival <= 62)
77 || ((ival & 3) == 0 && ival >= -124 && ival <= 124)
78 || ((TARGET_INSNS_64 || TARGET_INSNS_67)
79 && (ival & 7) == 0 && ival > 0 && ival <= 248)")))
81 (define_constraint "Iux"
82 "Integer constant that can be the operand of a long ADDA or a SUBA insn,
83 i.e. one involving B14 or B15 as source operand."
84 (and (match_code "const_int")
85 (and (match_test "TARGET_INSNS_64PLUS")
86 (match_test "ival >= 0
88 || ((ival & 1) == 0 && ival < 65536)
89 || ((ival & 3) == 0 && ival < 131072))"))))
91 (define_constraint "IuB"
92 "Integer constant in the range 0 @dots{} 65535, aka ucst16."
93 (and (match_code "const_int")
94 (match_test "ival >= 0 && ival <= 65535")))
96 (define_constraint "IsB"
97 "Integer constant in the range @minus{}32768 @dots{} 32767."
98 (and (match_code "const_int")
99 (match_test "ival >= -32768 && ival <= 32767")))
101 (define_constraint "IsC"
102 "Integer constant in the range @math{-2^{20}} @dots{} @math{2^{20} - 1}."
103 (and (match_code "const_int")
104 (match_test "ival >= -0x100000 && ival <= 0xfffff")))
106 (define_constraint "JA"
108 Integer constant in the range 0 @dots{} 31, corresponding to an A register
110 (and (match_code "const_int")
111 (match_test "ival >= 0 && ival < 32")))
113 (define_constraint "JB"
115 Integer constant in the range 32 @dots{} 63, corresponding to a B register
117 (and (match_code "const_int")
118 (match_test "ival >= 32 && ival < 64")))
120 (define_constraint "Jc"
121 "Integer constant that is a valid mask for the clr instruction"
122 (and (match_code "const_int")
123 (match_test "c6x_valid_mask_p (ival)")))
125 (define_constraint "Js"
126 "Integer constant that is a valid mask for the set instruction"
127 (and (match_code "const_int")
128 (match_test "c6x_valid_mask_p (~ival)")))
130 (define_memory_constraint "Q"
131 "Memory location with A base register."
132 (and (match_code "mem")
133 (match_test "c6x_mem_operand (op, A_REGS, false)")))
135 (define_memory_constraint "R"
136 "Memory location with B base register."
137 (and (match_code "mem")
138 (match_test "c6x_mem_operand (op, B_REGS, false)")))
140 (define_memory_constraint "T"
142 Memory location with B base register, but not using a long offset."
143 (and (match_code "mem")
144 (match_test "c6x_mem_operand (op, B_REGS, true)")))
146 (define_constraint "S0"
148 On C64x+ targets, a GP-relative small data reference"
149 (and (match_test "TARGET_INSNS_64PLUS")
150 (match_operand 0 "sdata_symbolic_operand")))
152 (define_constraint "S1"
154 Any kind of @code{SYMBOL_REF}, for use in a call address."
155 (and (match_code "symbol_ref")
156 (match_operand 0 "c6x_call_operand")))
158 (define_constraint "S2"
160 Any SYMBOL_REF or LABEL_REF."
161 (ior (match_code "symbol_ref") (match_code "label_ref")))
163 (define_constraint "Si"
165 Any immediate value, unless it matches the S0 constraint."
166 (and (match_operand 0 "immediate_operand")
167 (match_test "!satisfies_constraint_S0 (op)")))
169 (define_memory_constraint "W"
171 A memory operand with an address that can't be used in an unaligned access."
172 (and (match_code "mem")
173 (match_test "!c6x_legitimate_address_p_1 (GET_MODE (op), XEXP (op, 0),
174 reload_completed, true)")))