1 ;; Predicate definitions for Vitesse IQ2000.
2 ;; Copyright (C) 2005 Free Software Foundation, Inc.
4 ;; This file is part of GCC.
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 2, or (at your option)
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.
16 ;; You should have received a copy of the GNU General Public License
17 ;; along with GCC; see the file COPYING. If not, write to
18 ;; the Free Software Foundation, 51 Franklin Street, Fifth Floor,
19 ;; Boston, MA 02110-1301, USA.
21 ;; Return 1 if OP can be used as an operand where a register or 16 bit
22 ;; unsigned integer is needed.
24 (define_predicate "uns_arith_operand"
25 (match_code "reg,const_int,subreg")
27 if (GET_CODE (op) == CONST_INT && SMALL_INT_UNSIGNED (op))
30 return register_operand (op, mode);
33 ;; Return 1 if OP can be used as an operand where a 16 bit integer is
36 (define_predicate "arith_operand"
37 (match_code "reg,const_int,subreg")
39 if (GET_CODE (op) == CONST_INT && SMALL_INT (op))
42 return register_operand (op, mode);
45 ;; Return 1 if OP is a integer which fits in 16 bits.
47 (define_predicate "small_int"
48 (match_code "const_int")
50 return (GET_CODE (op) == CONST_INT && SMALL_INT (op));
53 ;; Return 1 if OP is a 32 bit integer which is too big to be loaded
54 ;; with one instruction.
56 (define_predicate "large_int"
57 (match_code "const_int")
61 if (GET_CODE (op) != CONST_INT)
66 /* IOR reg,$r0,value. */
67 if ((value & ~ ((HOST_WIDE_INT) 0x0000ffff)) == 0)
70 /* SUBU reg,$r0,value. */
71 if (((unsigned HOST_WIDE_INT) (value + 32768)) <= 32767)
74 /* LUI reg,value >> 16. */
75 if ((value & 0x0000ffff) == 0)
81 ;; Return 1 if OP is a register or the constant 0.
83 (define_predicate "reg_or_0_operand"
84 (match_code "reg,const_int,const_double,subreg")
86 switch (GET_CODE (op))
89 return INTVAL (op) == 0;
92 return op == CONST0_RTX (mode);
96 return register_operand (op, mode);
105 ;; Return 1 if OP is a memory operand that fits in a single
106 ;; instruction (i.e., register + small offset).
108 (define_predicate "simple_memory_operand"
109 (match_code "mem,subreg")
111 rtx addr, plus0, plus1;
113 /* Eliminate non-memory operations. */
114 if (GET_CODE (op) != MEM)
117 /* Dword operations really put out 2 instructions, so eliminate them. */
118 if (GET_MODE_SIZE (GET_MODE (op)) > (unsigned) UNITS_PER_WORD)
121 /* Decode the address now. */
123 switch (GET_CODE (addr))
130 return SMALL_INT (addr);
133 plus0 = XEXP (addr, 0);
134 plus1 = XEXP (addr, 1);
135 if (GET_CODE (plus0) == REG
136 && GET_CODE (plus1) == CONST_INT && SMALL_INT (plus1)
137 && SMALL_INT_UNSIGNED (plus1) /* No negative offsets. */)
140 else if (GET_CODE (plus1) == REG
141 && GET_CODE (plus0) == CONST_INT && SMALL_INT (plus0)
142 && SMALL_INT_UNSIGNED (plus1) /* No negative offsets. */)
158 ;; Return nonzero if the code of this rtx pattern is EQ or NE.
160 (define_predicate "equality_op"
163 if (mode != GET_MODE (op))
166 return GET_CODE (op) == EQ || GET_CODE (op) == NE;
169 ;; Return nonzero if the code is a relational operations (EQ, LE,
172 (define_predicate "cmp_op"
173 (match_code "eq,ne,gt,ge,gtu,geu,lt,le,ltu,leu")
175 if (mode != GET_MODE (op))
178 return COMPARISON_P (op);
181 ;; Return nonzero if the operand is either the PC or a label_ref.
183 (define_special_predicate "pc_or_label_operand"
184 (match_code "pc,label_ref")
189 if (GET_CODE (op) == LABEL_REF)
195 ;; Return nonzero if OP is a valid operand for a call instruction.
197 (define_predicate "call_insn_operand"
198 (match_code "const_int,const,symbol_ref,reg")
200 return (CONSTANT_ADDRESS_P (op)
201 || (GET_CODE (op) == REG && op != arg_pointer_rtx
202 && ! (REGNO (op) >= FIRST_PSEUDO_REGISTER
203 && REGNO (op) <= LAST_VIRTUAL_REGISTER)));
206 ;; Return nonzero if OP is valid as a source operand for a move
209 (define_predicate "move_operand"
210 (match_code "const_int,const_double,const,symbol_ref,label_ref,subreg,reg,mem")
212 /* Accept any general operand after reload has started; doing so
213 avoids losing if reload does an in-place replacement of a register
214 with a SYMBOL_REF or CONST. */
215 return (general_operand (op, mode)
216 && (! (iq2000_check_split (op, mode))
217 || reload_in_progress || reload_completed));
220 ;; Return nonzero if OP is a constant power of 2.
222 (define_predicate "power_of_2_operand"
223 (match_code "const_int")
227 if (GET_CODE (op) != CONST_INT)
230 intval = INTVAL (op);
232 return ((intval & ((unsigned)(intval) - 1)) == 0);