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) |
42 ENABLE(OPT_PRECISE_EXC_CONTEXT) |
45 /* set the flags with set_flagname, get the flag with get_flagname */
46 void set_opt_cse (int value)
49 libFIRM_opt |= OPT_CSE;
51 libFIRM_opt &= ~OPT_CSE;
54 void set_opt_global_cse(int value)
57 libFIRM_opt |= OPT_GLOBAL_CSE;
59 libFIRM_opt &= ~OPT_GLOBAL_CSE;
63 set_opt_constant_folding(int value)
66 libFIRM_opt |= OPT_CONSTANT_FOLDING;
68 libFIRM_opt &= ~OPT_CONSTANT_FOLDING;
72 set_opt_unreachable_code(int value)
75 libFIRM_opt |= OPT_UNREACHABLE_CODE;
77 libFIRM_opt &= ~OPT_UNREACHABLE_CODE;
80 void set_opt_control_flow(int value)
82 set_opt_control_flow_straightening(value);
83 set_opt_control_flow_weak_simplification(value);
84 set_opt_control_flow_strong_simplification(value);
85 set_opt_critical_edges(value);
88 /* Performs Straightening */
89 void set_opt_control_flow_straightening(int value)
92 libFIRM_opt |= OPT_CONTROL_FLOW_STRAIGHTENING;
94 libFIRM_opt &= ~OPT_CONTROL_FLOW_STRAIGHTENING;
97 /* Performs if simplifications in local optimizations. */
98 void set_opt_control_flow_weak_simplification(int value)
101 libFIRM_opt |= OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION;
103 libFIRM_opt &= ~OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION;
106 /* Performs strong if and loop simplification (in optimize_cf). */
107 void set_opt_control_flow_strong_simplification(int value)
110 libFIRM_opt |= OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION;
112 libFIRM_opt &= ~OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION;
115 void set_opt_critical_edges(int value)
118 libFIRM_opt |= OPT_CRITICAL_EDGES;
120 libFIRM_opt &= ~OPT_CRITICAL_EDGES;
123 void set_opt_reassociation(int value)
126 libFIRM_opt |= OPT_REASSOCIATION;
128 libFIRM_opt &= ~OPT_REASSOCIATION;
131 void set_opt_dead_node_elimination(int value)
134 libFIRM_opt |= OPT_DEAD_NODE_ELIMINATION;
136 libFIRM_opt &= ~OPT_DEAD_NODE_ELIMINATION;
139 void set_opt_dead_method_elimination (int value) {
141 libFIRM_opt |= OPT_DEAD_METHOD_ELIMINATION;
143 libFIRM_opt &= ~OPT_DEAD_METHOD_ELIMINATION;
146 void set_opt_dead_method_elimination_verbose (int value) {
148 libFIRM_opt |= OPT_DEAD_METHOD_ELIMINATION_VERBOSE;
150 libFIRM_opt &= ~OPT_DEAD_METHOD_ELIMINATION_VERBOSE;
153 void set_optimize(int value)
156 libFIRM_opt |= OPT_OPTIMIZED;
158 libFIRM_opt &= ~OPT_OPTIMIZED;
161 int get_optimize(void)
163 return get_opt_optimize();
166 /* Enable/Disables inlining. */
167 void set_opt_inline(int value)
170 libFIRM_opt |= OPT_INLINE;
172 libFIRM_opt &= ~OPT_INLINE;
175 /* Enable/Disable optimization of dynamic method dispatch */
176 void set_opt_dyn_meth_dispatch (int value)
179 libFIRM_opt |= OPT_DYN_METH_DISPATCH;
181 libFIRM_opt &= ~OPT_DYN_METH_DISPATCH;
184 /* Enable/Disable normalizations of the firm representation. */
185 void set_opt_normalize(int value)
188 libFIRM_opt |= OPT_NORMALIZE;
190 libFIRM_opt &= ~OPT_NORMALIZE;
193 /* Enable/Disable optimization of tail-recursion calls. */
194 void set_opt_tail_recursion(int value)
197 libFIRM_opt |= OPT_TAIL_RECURSION;
199 libFIRM_opt &= ~OPT_TAIL_RECURSION;
202 /* Enable/Disable precise exception context. */
203 void set_opt_precise_exc_context(int value)
206 libFIRM_opt |= OPT_PRECISE_EXC_CONTEXT;
208 libFIRM_opt &= ~OPT_PRECISE_EXC_CONTEXT;
211 /* Save the current optimization state. */
212 void save_optimization_state(optimization_state_t *state)
214 *state = libFIRM_opt;
217 /* Restore the current optimization state. */
218 void restore_optimization_state(const optimization_state_t *state)
220 libFIRM_opt = *state;