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_UNREACHABLE_CODE) |
30 ENABLE(OPT_CONTROL_FLOW_STRAIGHTENING) |
31 ENABLE(OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION) |
32 ENABLE(OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION) |
33 ENABLE(OPT_CRITICAL_EDGES) |
34 ENABLE(OPT_DEAD_NODE_ELIMINATION) |
35 ENABLE(OPT_REASSOCIATION) |
37 ENABLE(OPT_DYN_METH_DISPATCH) |
38 ENABLE(OPT_NORMALIZE);
40 /* set the flags with set_flagname, get the flag with get_flagname */
41 void set_opt_cse (int value)
44 libFIRM_opt |= OPT_CSE;
46 libFIRM_opt &= ~OPT_CSE;
49 void set_opt_global_cse(int value)
52 libFIRM_opt |= OPT_GLOBAL_CSE;
54 libFIRM_opt &= ~OPT_GLOBAL_CSE;
58 set_opt_constant_folding(int value)
61 libFIRM_opt |= OPT_CONSTANT_FOLDING;
63 libFIRM_opt &= ~OPT_CONSTANT_FOLDING;
67 set_opt_unreachable_code(int value)
70 libFIRM_opt |= OPT_UNREACHABLE_CODE;
72 libFIRM_opt &= ~OPT_UNREACHABLE_CODE;
75 void set_opt_control_flow(int value)
77 set_opt_control_flow_straightening(value);
78 set_opt_control_flow_weak_simplification(value);
79 set_opt_control_flow_strong_simplification(value);
80 set_opt_critical_edges(value);
83 /* Performs Straightening */
84 void set_opt_control_flow_straightening(int value)
87 libFIRM_opt |= OPT_CONTROL_FLOW_STRAIGHTENING;
89 libFIRM_opt &= ~OPT_CONTROL_FLOW_STRAIGHTENING;
92 /* Performs if simplifications in local optimizations. */
93 void set_opt_control_flow_weak_simplification(int value)
96 libFIRM_opt |= OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION;
98 libFIRM_opt &= ~OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION;
101 /* Performs strong if and loop simplification (in optimize_cf). */
102 void set_opt_control_flow_strong_simplification(int value)
105 libFIRM_opt |= OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION;
107 libFIRM_opt &= ~OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION;
110 void set_opt_critical_edges(int value)
113 libFIRM_opt |= OPT_CRITICAL_EDGES;
115 libFIRM_opt &= ~OPT_CRITICAL_EDGES;
118 void set_opt_reassociation(int value)
121 libFIRM_opt |= OPT_REASSOCIATION;
123 libFIRM_opt &= ~OPT_REASSOCIATION;
126 void set_opt_dead_node_elimination(int value)
129 libFIRM_opt |= OPT_DEAD_NODE_ELIMINATION;
131 libFIRM_opt &= ~OPT_DEAD_NODE_ELIMINATION;
134 void set_optimize(int value)
137 libFIRM_opt |= OPT_OPTIMIZED;
139 libFIRM_opt &= ~OPT_OPTIMIZED;
142 int get_optimize(void)
144 return get_opt_optimize();
147 void set_opt_inline(int value)
150 libFIRM_opt |= OPT_INLINE;
152 libFIRM_opt &= ~OPT_INLINE;
155 /** Enable/Disable optimization of dynamic method dispatch
157 * This flag enables/disables the optimization of dynamic method dispatch.
158 * If the flag is turned on Sel nodes can be replaced by Const nodes representing
159 * the address of a function.
161 void set_opt_dyn_meth_dispatch (int value)
164 libFIRM_opt |= OPT_DYN_METH_DISPATCH;
166 libFIRM_opt &= ~OPT_DYN_METH_DISPATCH;
169 void set_opt_normalize(int value)
172 libFIRM_opt |= OPT_NORMALIZE;
174 libFIRM_opt &= ~OPT_NORMALIZE;
177 /* Save the current optimization state. */
178 void save_optimization_state(optimization_state_t *state)
180 *state = libFIRM_opt;
183 /* Restore the current optimization state. */
184 void restore_optimization_state(const optimization_state_t *state)
186 libFIRM_opt = *state;