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_STRENGTH_RED) |
30 ENABLE(OPT_CONSTANT_FOLDING) |
31 ENABLE(OPT_REDUNDANT_LOADSTORE) |
32 ENABLE(OPT_UNREACHABLE_CODE) |
33 ENABLE(OPT_CONTROL_FLOW_STRAIGHTENING) |
34 ENABLE(OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION) |
35 ENABLE(OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION) |
36 ENABLE(OPT_CRITICAL_EDGES) |
37 ENABLE(OPT_DEAD_NODE_ELIMINATION) |
38 ENABLE(OPT_DEAD_METHOD_ELIMINATION) |
39 ENABLE(OPT_REASSOCIATION) |
41 ENABLE(OPT_DYN_METH_DISPATCH) |
42 ENABLE(OPT_NORMALIZE) |
43 ENABLE(OPT_TAIL_RECURSION) |
44 ENABLE(OPT_PRECISE_EXC_CONTEXT) |
47 /* set the flags with set_flagname, get the flag with get_flagname */
48 void set_opt_cse (int value)
51 libFIRM_opt |= OPT_CSE;
53 libFIRM_opt &= ~OPT_CSE;
56 void set_opt_global_cse(int value)
59 libFIRM_opt |= OPT_GLOBAL_CSE;
61 libFIRM_opt &= ~OPT_GLOBAL_CSE;
64 void set_opt_strength_red (int value)
67 libFIRM_opt |= OPT_STRENGTH_RED;
69 libFIRM_opt &= ~OPT_STRENGTH_RED;
73 set_opt_constant_folding(int value)
76 libFIRM_opt |= OPT_CONSTANT_FOLDING;
78 libFIRM_opt &= ~OPT_CONSTANT_FOLDING;
82 set_opt_redundant_LoadStore(int value) {
84 libFIRM_opt |= OPT_REDUNDANT_LOADSTORE;
86 libFIRM_opt &= ~OPT_REDUNDANT_LOADSTORE;
90 set_opt_unreachable_code(int value)
93 libFIRM_opt |= OPT_UNREACHABLE_CODE;
95 libFIRM_opt &= ~OPT_UNREACHABLE_CODE;
98 void set_opt_control_flow(int value)
100 set_opt_control_flow_straightening(value);
101 set_opt_control_flow_weak_simplification(value);
102 set_opt_control_flow_strong_simplification(value);
103 set_opt_critical_edges(value);
106 /* Performs Straightening */
107 void set_opt_control_flow_straightening(int value)
110 libFIRM_opt |= OPT_CONTROL_FLOW_STRAIGHTENING;
112 libFIRM_opt &= ~OPT_CONTROL_FLOW_STRAIGHTENING;
115 /* Performs if simplifications in local optimizations. */
116 void set_opt_control_flow_weak_simplification(int value)
119 libFIRM_opt |= OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION;
121 libFIRM_opt &= ~OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION;
124 /* Performs strong if and loop simplification (in optimize_cf). */
125 void set_opt_control_flow_strong_simplification(int value)
128 libFIRM_opt |= OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION;
130 libFIRM_opt &= ~OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION;
133 void set_opt_critical_edges(int value)
136 libFIRM_opt |= OPT_CRITICAL_EDGES;
138 libFIRM_opt &= ~OPT_CRITICAL_EDGES;
141 void set_opt_reassociation(int value)
144 libFIRM_opt |= OPT_REASSOCIATION;
146 libFIRM_opt &= ~OPT_REASSOCIATION;
149 void set_opt_dead_node_elimination(int value)
152 libFIRM_opt |= OPT_DEAD_NODE_ELIMINATION;
154 libFIRM_opt &= ~OPT_DEAD_NODE_ELIMINATION;
157 void set_opt_dead_method_elimination (int value) {
159 libFIRM_opt |= OPT_DEAD_METHOD_ELIMINATION;
161 libFIRM_opt &= ~OPT_DEAD_METHOD_ELIMINATION;
164 void set_opt_dead_method_elimination_verbose (int value) {
166 libFIRM_opt |= OPT_DEAD_METHOD_ELIMINATION_VERBOSE;
168 libFIRM_opt &= ~OPT_DEAD_METHOD_ELIMINATION_VERBOSE;
171 void set_optimize(int value)
174 libFIRM_opt |= OPT_OPTIMIZED;
176 libFIRM_opt &= ~OPT_OPTIMIZED;
179 int get_optimize(void)
181 return get_opt_optimize();
184 /* Enable/Disables inlining. */
185 void set_opt_inline(int value)
188 libFIRM_opt |= OPT_INLINE;
190 libFIRM_opt &= ~OPT_INLINE;
193 /* Enable/Disable optimization of dynamic method dispatch */
194 void set_opt_dyn_meth_dispatch (int value)
197 libFIRM_opt |= OPT_DYN_METH_DISPATCH;
199 libFIRM_opt &= ~OPT_DYN_METH_DISPATCH;
202 /* Enable/Disable normalizations of the firm representation. */
203 void set_opt_normalize(int value)
206 libFIRM_opt |= OPT_NORMALIZE;
208 libFIRM_opt &= ~OPT_NORMALIZE;
211 /* Enable/Disable optimization of tail-recursion calls. */
212 void set_opt_tail_recursion(int value)
215 libFIRM_opt |= OPT_TAIL_RECURSION;
217 libFIRM_opt &= ~OPT_TAIL_RECURSION;
220 /* Enable/Disable precise exception context. */
221 void set_opt_precise_exc_context(int value)
223 #if PRECISE_EXC_CONTEXT
225 libFIRM_opt |= OPT_PRECISE_EXC_CONTEXT;
227 libFIRM_opt &= ~OPT_PRECISE_EXC_CONTEXT;
231 /* Save the current optimization state. */
232 void save_optimization_state(optimization_state_t *state)
234 *state = libFIRM_opt;
237 /* Restore the current optimization state. */
238 void restore_optimization_state(const optimization_state_t *state)
240 libFIRM_opt = *state;