2 * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief Flags to control optimizations.
23 * @author Michael Beck, Sebastian Hack
32 #include "firm_common.h"
36 /* DISABLE - don't do this optimization
37 ENABLE - lets see, if there is a better graph */
41 #define FLAG(name, value, def) (irf_##name & def) |
42 #define E_FLAG(name, value, def) FLAG(name, value, def)
43 #define I_FLAG(name, value, def) FLAG(name, value, def)
44 #define R_FLAG(name, value)
46 optimization_state_t libFIRM_opt =
47 #include "irflag_t.def"
55 /** The bitset of currently running phases. */
56 optimization_state_t libFIRM_running = 0;
58 /* verbose is always off on default */
59 optimization_state_t libFIRM_verb = 0;
61 /* an external flag can be set and get from outside */
62 #define E_FLAG(name, value, def) \
63 void set_opt_##name(int flag) { \
64 if (flag) libFIRM_opt |= irf_##name; \
65 else libFIRM_opt &= ~irf_##name; \
67 int (get_opt_##name)(void) { \
68 return _get_opt_##name(); \
71 /* an internal flag can only be set from outside */
72 #define I_FLAG(name, value, def) \
73 void set_opt_##name(int flag) { \
74 if (flag) libFIRM_opt |= irf_##name; \
75 else libFIRM_opt &= ~irf_##name; \
78 #define R_FLAG(name, value)
81 #include "irflag_t.def"
87 /* for compatibility reasons */
88 void set_optimize(int value)
90 if (value) libFIRM_opt |= irf_optimize;
91 else libFIRM_opt &= ~irf_optimize;
94 int (get_optimize)(void)
96 return get_opt_optimize();
99 void set_opt_control_flow(int value)
101 set_opt_control_flow_straightening(value);
102 set_opt_control_flow_weak_simplification(value);
103 set_opt_control_flow_strong_simplification(value);
106 /* Save the current optimization state. */
107 void save_optimization_state(optimization_state_t *state)
109 *state = libFIRM_opt;
112 /* Restore the current optimization state. */
113 void restore_optimization_state(const optimization_state_t *state)
115 libFIRM_opt = *state;
118 /* Switches ALL optimizations off */
119 void all_optimizations_off(void)
125 /* only for debugging */
126 void firm_show_flags(FILE *f)
130 printf("Firm optimization state:\n");
131 #define E_FLAG(name, value, def) printf(" %-20s = %s\n", #name, get_opt_##name() ? "ON" : "OFF");
132 #define I_FLAG(name, value, def) printf(" %-20s = %s\n", #name, get_opt_##name() ? "ON" : "OFF");
133 #define R_FLAG(name, value) printf(" %-20s = %s\n", #name, is_##name##_running() ? "is running" : "not running");
134 #include "irflag_t.def"
142 static const lc_opt_table_entry_t firm_flags[] = {
143 #define I_FLAG(name, val, def) LC_OPT_ENT_BIT(#name, #name, &libFIRM_opt, (1 << val)),
144 #define E_FLAG(name, val, def) LC_OPT_ENT_BIT(#name, #name, &libFIRM_opt, (1 << val)),
145 #define R_FLAG(name, val)
146 #include "irflag_t.def"
153 void firm_init_flags(void)
155 lc_opt_entry_t *grp = lc_opt_get_grp(firm_opt_get_root(), "opt");
156 lc_opt_add_table(grp, firm_flags);
159 firm_verification_t opt_do_node_verification = FIRM_VERIFICATION_ON;
161 void do_node_verification(firm_verification_t mode)
163 opt_do_node_verification = mode;