3 * File name: ir/ir/irflag.c
4 * Purpose: Flags to control optimizations.
5 * Author: Christian Schaefer, Goetz Lindenmaier
9 * Copyright: (c) 1999-2003 Universität Karlsruhe
10 * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
17 #include "firm_common.h"
20 /* DISABLE - don't do this optimization
21 ENABLE - lets see, if there is a better graph */
25 optimization_state_t libFIRM_opt =
26 ENABLE(OPT_OPTIMIZED) |
28 DISABLE(OPT_GLOBAL_CSE) |
29 ENABLE(OPT_CONSTANT_FOLDING) |
30 ENABLE(OPT_UNREACHABLE_CODE) |
31 ENABLE(OPT_CONTROL_FLOW_STRAIGHTENING) |
32 ENABLE(OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION) |
33 ENABLE(OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION) |
34 ENABLE(OPT_CRITICAL_EDGES) |
35 ENABLE(OPT_DEAD_NODE_ELIMINATION) |
36 ENABLE(OPT_DEAD_METHOD_ELIMINATION) |
37 ENABLE(OPT_REASSOCIATION) |
39 ENABLE(OPT_DYN_METH_DISPATCH) |
40 ENABLE(OPT_NORMALIZE) |
41 ENABLE(OPT_TAIL_RECURSION);
43 /* set the flags with set_flagname, get the flag with get_flagname */
44 void set_opt_cse (int value)
47 libFIRM_opt |= OPT_CSE;
49 libFIRM_opt &= ~OPT_CSE;
52 void set_opt_global_cse(int value)
55 libFIRM_opt |= OPT_GLOBAL_CSE;
57 libFIRM_opt &= ~OPT_GLOBAL_CSE;
61 set_opt_constant_folding(int value)
64 libFIRM_opt |= OPT_CONSTANT_FOLDING;
66 libFIRM_opt &= ~OPT_CONSTANT_FOLDING;
70 set_opt_unreachable_code(int value)
73 libFIRM_opt |= OPT_UNREACHABLE_CODE;
75 libFIRM_opt &= ~OPT_UNREACHABLE_CODE;
78 void set_opt_control_flow(int value)
80 set_opt_control_flow_straightening(value);
81 set_opt_control_flow_weak_simplification(value);
82 set_opt_control_flow_strong_simplification(value);
83 set_opt_critical_edges(value);
86 /* Performs Straightening */
87 void set_opt_control_flow_straightening(int value)
90 libFIRM_opt |= OPT_CONTROL_FLOW_STRAIGHTENING;
92 libFIRM_opt &= ~OPT_CONTROL_FLOW_STRAIGHTENING;
95 /* Performs if simplifications in local optimizations. */
96 void set_opt_control_flow_weak_simplification(int value)
99 libFIRM_opt |= OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION;
101 libFIRM_opt &= ~OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION;
104 /* Performs strong if and loop simplification (in optimize_cf). */
105 void set_opt_control_flow_strong_simplification(int value)
108 libFIRM_opt |= OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION;
110 libFIRM_opt &= ~OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION;
113 void set_opt_critical_edges(int value)
116 libFIRM_opt |= OPT_CRITICAL_EDGES;
118 libFIRM_opt &= ~OPT_CRITICAL_EDGES;
121 void set_opt_reassociation(int value)
124 libFIRM_opt |= OPT_REASSOCIATION;
126 libFIRM_opt &= ~OPT_REASSOCIATION;
129 void set_opt_dead_node_elimination(int value)
132 libFIRM_opt |= OPT_DEAD_NODE_ELIMINATION;
134 libFIRM_opt &= ~OPT_DEAD_NODE_ELIMINATION;
137 void set_opt_dead_method_elimination (int value) {
139 libFIRM_opt |= OPT_DEAD_METHOD_ELIMINATION;
141 libFIRM_opt &= ~OPT_DEAD_METHOD_ELIMINATION;
144 void set_opt_dead_method_elimination_verbose (int value) {
146 libFIRM_opt |= OPT_DEAD_METHOD_ELIMINATION_VERBOSE;
148 libFIRM_opt &= ~OPT_DEAD_METHOD_ELIMINATION_VERBOSE;
151 void set_optimize(int value)
154 libFIRM_opt |= OPT_OPTIMIZED;
156 libFIRM_opt &= ~OPT_OPTIMIZED;
159 int get_optimize(void)
161 return get_opt_optimize();
164 /* Enable/Disables inlining. */
165 void set_opt_inline(int value)
168 libFIRM_opt |= OPT_INLINE;
170 libFIRM_opt &= ~OPT_INLINE;
173 /* Enable/Disable optimization of dynamic method dispatch */
174 void set_opt_dyn_meth_dispatch (int value)
177 libFIRM_opt |= OPT_DYN_METH_DISPATCH;
179 libFIRM_opt &= ~OPT_DYN_METH_DISPATCH;
182 /* Enable/Disable normalizations of the firm representation. */
183 void set_opt_normalize(int value)
186 libFIRM_opt |= OPT_NORMALIZE;
188 libFIRM_opt &= ~OPT_NORMALIZE;
191 /* Enable/Disable optimization of tail-recursion calls. */
192 void set_opt_tail_recursion(int value)
195 libFIRM_opt |= OPT_TAIL_RECURSION;
197 libFIRM_opt &= ~OPT_TAIL_RECURSION;
200 /* Save the current optimization state. */
201 void save_optimization_state(optimization_state_t *state)
203 *state = libFIRM_opt;
206 /* Restore the current optimization state. */
207 void restore_optimization_state(const optimization_state_t *state)
209 libFIRM_opt = *state;