1 ;; Predicate definitions for Motorola 68HC11 and 68HC12.
2 ;; Copyright (C) 2005, 2007 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 3, 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 COPYING3. If not see
18 ;; <http://www.gnu.org/licenses/>.
20 ;; TODO: Add a comment here.
22 (define_predicate "stack_register_operand"
23 (match_code "subreg,reg")
28 ;; TODO: Add a comment here.
30 (define_predicate "d_register_operand"
31 (match_code "subreg,reg")
33 if (GET_MODE (op) != mode && mode != VOIDmode)
36 if (GET_CODE (op) == SUBREG)
39 return GET_CODE (op) == REG
40 && (REGNO (op) >= FIRST_PSEUDO_REGISTER
41 || REGNO (op) == HARD_D_REGNUM
42 || (mode == QImode && REGNO (op) == HARD_B_REGNUM));
45 ;; TODO: Add a comment here.
47 (define_predicate "hard_addr_reg_operand"
48 (match_code "subreg,reg")
50 if (GET_MODE (op) != mode && mode != VOIDmode)
53 if (GET_CODE (op) == SUBREG)
56 return GET_CODE (op) == REG
57 && (REGNO (op) == HARD_X_REGNUM
58 || REGNO (op) == HARD_Y_REGNUM
59 || REGNO (op) == HARD_Z_REGNUM);
62 ;; TODO: Add a comment here.
64 (define_predicate "hard_reg_operand"
65 (match_code "subreg,reg")
67 if (GET_MODE (op) != mode && mode != VOIDmode)
70 if (GET_CODE (op) == SUBREG)
73 return GET_CODE (op) == REG
74 && (REGNO (op) >= FIRST_PSEUDO_REGISTER
75 || H_REGNO_P (REGNO (op)));
78 ;; TODO: Add a comment here.
80 (define_predicate "m68hc11_logical_operator"
81 (match_code "and,ior,xor")
83 return GET_CODE (op) == AND || GET_CODE (op) == IOR || GET_CODE (op) == XOR;
86 ;; TODO: Add a comment here.
88 (define_predicate "m68hc11_arith_operator"
89 (match_code "and,ior,xor,plus,minus,ashift,ashiftrt,lshiftrt,rotate,rotatert")
91 return GET_CODE (op) == AND || GET_CODE (op) == IOR || GET_CODE (op) == XOR
92 || GET_CODE (op) == PLUS || GET_CODE (op) == MINUS
93 || GET_CODE (op) == ASHIFT || GET_CODE (op) == ASHIFTRT
94 || GET_CODE (op) == LSHIFTRT || GET_CODE (op) == ROTATE
95 || GET_CODE (op) == ROTATERT;
98 ;; TODO: Add a comment here.
100 (define_predicate "m68hc11_non_shift_operator"
101 (match_code "and,ior,xor,plus,minus")
103 return GET_CODE (op) == AND || GET_CODE (op) == IOR || GET_CODE (op) == XOR
104 || GET_CODE (op) == PLUS || GET_CODE (op) == MINUS;
107 ;; TODO: Add a comment here.
109 (define_predicate "m68hc11_unary_operator"
110 (match_code "neg,not,sign_extend,zero_extend")
112 return GET_CODE (op) == NEG || GET_CODE (op) == NOT
113 || GET_CODE (op) == SIGN_EXTEND || GET_CODE (op) == ZERO_EXTEND;
116 ;; Return true if op is a shift operator.
118 (define_predicate "m68hc11_shift_operator"
119 (match_code "ashift,ashiftrt,lshiftrt,rotate,rotatert")
121 return GET_CODE (op) == ROTATE || GET_CODE (op) == ROTATERT
122 || GET_CODE (op) == LSHIFTRT || GET_CODE (op) == ASHIFT
123 || GET_CODE (op) == ASHIFTRT;
126 ;; TODO: Add a comment here.
128 (define_predicate "m68hc11_eq_compare_operator"
131 return GET_CODE (op) == EQ || GET_CODE (op) == NE;
134 ;; TODO: Add a comment here.
136 (define_predicate "non_push_operand"
137 (match_code "subreg,reg,mem")
139 if (general_operand (op, mode) == 0)
142 if (push_operand (op, mode) == 1)
147 ;; TODO: Add a comment here.
149 (define_predicate "splitable_operand"
150 (match_code "subreg,reg,mem,symbol_ref,label_ref,const_int,const_double")
152 if (general_operand (op, mode) == 0)
155 if (push_operand (op, mode) == 1)
158 /* Reject a (MEM (MEM X)) because the patterns that use non_push_operand
159 need to split such addresses to access the low and high part but it
160 is not possible to express a valid address for the low part. */
161 if (mode != QImode && GET_CODE (op) == MEM
162 && GET_CODE (XEXP (op, 0)) == MEM)
167 ;; TODO: Add a comment here.
169 (define_predicate "reg_or_some_mem_operand"
170 (match_code "subreg,reg,mem")
172 if (GET_CODE (op) == MEM)
174 rtx op0 = XEXP (op, 0);
177 if (symbolic_memory_operand (op0, mode))
180 if (IS_STACK_PUSH (op))
183 if (GET_CODE (op) == REG && reload_in_progress
184 && REGNO (op) >= FIRST_PSEUDO_REGISTER
185 && reg_equiv_memory_loc[REGNO (op)])
187 op = reg_equiv_memory_loc[REGNO (op)];
188 op = eliminate_regs (op, 0, NULL_RTX);
190 if (GET_CODE (op) != MEM)
194 addr_mode = m68hc11_addr_mode | (reload_completed ? ADDR_STRICT : 0);
195 addr_mode &= ~ADDR_INDIRECT;
196 return m68hc11_valid_addressing_p (op0, mode, addr_mode);
199 return register_operand (op, mode);
202 ;; TODO: Add a comment here.
204 (define_predicate "tst_operand"
205 (match_code "subreg,reg,mem")
207 if (GET_CODE (op) == MEM && reload_completed == 0)
209 rtx addr = XEXP (op, 0);
210 if (m68hc11_auto_inc_p (addr))
213 return nonimmediate_operand (op, mode);
216 ;; TODO: Add a comment here.
218 (define_predicate "cmp_operand"
219 (match_code "subreg,reg,mem,symbol_ref,label_ref,const_int,const_double")
221 if (GET_CODE (op) == MEM)
223 rtx addr = XEXP (op, 0);
224 if (m68hc11_auto_inc_p (addr))
227 return general_operand (op, mode);