1 /* Predicates 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>
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published
10 by the Free Software Foundation; either version 3, or (at your
11 option) any later version.
13 GCC is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
16 License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 (define_predicate "reg_or_const_int_operand"
23 (ior (match_operand 0 "register_operand")
24 (match_operand 0 "const_int_operand")))
26 (define_predicate "const_vector_operand"
27 (match_code "const_vector"))
29 (define_predicate "scst5_operand"
30 (and (match_operand 0 "const_int_operand")
31 (match_test "satisfies_constraint_Is5 (op)")))
33 (define_predicate "reg_or_ucst4_operand"
34 (ior (match_operand 0 "register_operand")
35 (and (match_operand 0 "const_int_operand")
36 (match_test "satisfies_constraint_Iu4 (op)"))))
38 (define_predicate "reg_or_scst5_operand"
39 (ior (match_operand 0 "register_operand")
40 (match_operand 0 "scst5_operand")))
42 (define_predicate "reg_or_ucst5_operand"
43 (ior (match_operand 0 "register_operand")
44 (and (match_operand 0 "const_int_operand")
45 (match_test "satisfies_constraint_Iu5 (op)"))))
47 (define_predicate "addsi_operand"
48 (ior (match_operand 0 "register_operand")
49 (and (match_operand 0 "const_int_operand")
50 (match_test "satisfies_constraint_IsB (op)"))))
52 (define_predicate "andsi_operand"
53 (ior (match_operand 0 "reg_or_scst5_operand")
54 (and (match_operand 0 "const_int_operand")
55 (match_test "satisfies_constraint_Jc (op)"))))
57 (define_predicate "iorsi_operand"
58 (ior (match_operand 0 "reg_or_scst5_operand")
59 (and (match_operand 0 "const_int_operand")
60 (match_test "satisfies_constraint_Js (op)"))))
62 (define_predicate "insv_operand"
63 (and (match_operand 0 "const_int_operand")
64 (match_test "INTVAL (op) == 0 || INTVAL (op) == -1")))
66 (define_predicate "c6x_jump_operand"
67 (match_code "label_ref,symbol_ref,reg"))
69 (define_predicate "c6x_call_operand"
70 (ior (match_code "symbol_ref,reg")
71 (and (match_code "subreg")
72 (match_test "GET_CODE (XEXP (op, 0)) == REG")))
74 /* The linker transforms jumps to undefined weak symbols in a way that
75 is incompatible with our code generation. */
76 return (GET_CODE (op) != SYMBOL_REF
77 || (!SYMBOL_REF_WEAK (op)
78 && !c6x_long_call_p (op)));
81 ;; Returns 1 if OP is a symbolic operand, i.e. a symbol_ref or a label_ref,
82 ;; possibly with an offset.
83 (define_predicate "symbolic_operand"
84 (ior (match_code "symbol_ref,label_ref")
85 (and (match_code "const")
86 (match_test "GET_CODE (XEXP (op,0)) == PLUS
87 && (GET_CODE (XEXP (XEXP (op, 0), 0)) == SYMBOL_REF
88 || GET_CODE (XEXP (XEXP (op, 0), 0)) == LABEL_REF)
89 && GET_CODE (XEXP (XEXP (op, 0), 1)) == CONST_INT"))))
91 (define_predicate "const_int_or_symbolic_operand"
92 (ior (match_operand 0 "symbolic_operand")
93 (match_operand 0 "const_int_operand")))
95 ;; Return nonzero iff OP is one of the integer constants 2, 4 or 8.
96 (define_predicate "adda_scale_operand"
97 (and (match_code "const_int")
98 (match_test "INTVAL (op) == 2 || INTVAL (op) == 4
99 || ((TARGET_INSNS_64 || TARGET_INSNS_67)
100 && INTVAL (op) == 8)")))
102 ;; Return nonzero iff OP is one of the integer constants 2 or 4.
103 (define_predicate "suba_scale_operand"
104 (and (match_code "const_int")
105 (match_test "INTVAL (op) == 2 || INTVAL (op) == 4")))
107 ;; True if this operator is valid for predication.
108 (define_predicate "predicate_operator"
109 (match_code "eq,ne"))
111 (define_predicate "c6x_comparison_operator"
112 (match_code "eq,ltu,gtu,lt,gt"))
114 (define_predicate "non_c6x_comparison_operator"
115 (match_code "ne,leu,geu,le,ge"))
117 ;; FP Comparisons handled by c6x_expand_compare.
118 (define_predicate "c6x_fp_comparison_operator"
119 (ior (match_code "eq,lt,gt,le,ge")
120 (and (match_test "TARGET_FP")
121 (match_code "ltgt,uneq,unlt,ungt,unle,unge,ordered,unordered"))))
123 (define_predicate "c6x_any_comparison_operand"
124 (match_code "eq,lt,gt,le,ge,ltu,gtu")
126 rtx op0 = XEXP (op, 0);
127 rtx op1 = XEXP (op, 1);
128 if (ltugtu_operator (op, SImode)
129 && register_operand (op0, SImode)
130 && ((TARGET_INSNS_64 && reg_or_ucst5_operand (op1, SImode))
131 || (!TARGET_INSNS_64 && reg_or_ucst4_operand (op1, SImode))))
133 if (eqltgt_operator (op, SImode)
134 && register_operand (op0, SImode)
135 && reg_or_scst5_operand (op1, SImode))
139 if (!eqltgt_operator (op, SFmode) && !eqltgt_operator (op, DFmode))
141 if (register_operand (op0, GET_MODE (op))
142 && register_operand (op1, GET_MODE (op)))
147 (define_predicate "ltugtu_operator"
148 (match_code "ltu,gtu"))
150 (define_predicate "eqltgt_operator"
151 (match_code "eq,lt,gt"))
153 (define_predicate "eqne_operator"
154 (match_code "eq,ne"))
156 (define_predicate "predicate_register"
157 (and (match_code "reg")
158 (ior (match_test "REGNO_REG_CLASS (REGNO (op)) == PREDICATE_A_REGS")
159 (match_test "REGNO_REG_CLASS (REGNO (op)) == PREDICATE_B_REGS"))))
161 ;; Allow const_ints for things like the real_mult patterns.
162 (define_predicate "a_register"
163 (ior (and (match_code "reg")
164 (match_test "A_REGNO_P (REGNO (op))"))
165 (and (match_code "const_int")
166 (match_test "A_REGNO_P (INTVAL (op))"))))
168 (define_predicate "b_register"
169 (ior (and (match_code "reg")
170 (match_test "B_REGNO_P (REGNO (op))"))
171 (and (match_code "const_int")
172 (match_test "B_REGNO_P (INTVAL (op))"))))
174 (define_predicate "pic_register_operand"
175 (and (match_code "reg")
176 (match_test "op == pic_offset_table_rtx")))
178 ;; True if OP refers to a symbol in the sdata section.
179 (define_predicate "sdata_symbolic_operand"
180 (match_code "symbol_ref,const")
182 HOST_WIDE_INT offset = 0, size = 0;
185 switch (GET_CODE (op))
189 if (GET_CODE (op) != PLUS
190 || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
191 || GET_CODE (XEXP (op, 1)) != CONST_INT)
193 offset = INTVAL (XEXP (op, 1));
198 /* For shared libraries, only allow symbols we know are local.
199 For executables, the linker knows to create copy relocs if
200 necessary so we can use DP-relative addressing for all small
202 if ((c6x_initial_flag_pic && !SYMBOL_REF_LOCAL_P (op))
203 || !SYMBOL_REF_SMALL_P (op))
206 /* Note that in addition to DECLs, we can get various forms
207 of constants here. */
208 t = SYMBOL_REF_DECL (op);
210 t = DECL_SIZE_UNIT (t);
212 t = TYPE_SIZE_UNIT (TREE_TYPE (t));
213 if (t && host_integerp (t, 0))
215 size = tree_low_cst (t, 0);
220 /* Don't allow addressing outside the object. */
221 return (offset >= 0 && offset <= size);