3 * File name: ir/ir/irgraph.c
4 * Purpose: Flags to control optimizations, inline implementation.
8 * Copyright: (c) 1998-2004 Universität Karlsruhe
9 * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
15 * Inline implementation of Optimization flags.
17 * @author Michael Beck
25 * current libFIRM optimizations
28 /** Common subexpression eliminations: Hash the nodes. */
31 /** Don't use block predecessor for comparison.
32 * Default must be zero as code placement must
33 * be run right after a local optimize walk with
34 * opt_global_cse on. */
35 OPT_GLOBAL_CSE = 0x00000002,
37 /** Evaluate operations. */
38 OPT_CONSTANT_FOLDING = 0x00000004,
40 /** Bad node propagation. */
41 OPT_UNREACHABLE_CODE = 0x00000008,
44 OPT_CONTROL_FLOW_STRAIGHTENING = 0x00000010,
47 OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION = 0x00000020,
50 OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION = 0x00000040,
53 OPT_CRITICAL_EDGES = 0x00000080,
55 /** Reclaim memory. */
56 OPT_DEAD_NODE_ELIMINATION = 0x00000100,
58 /** Reassociate nodes. */
59 OPT_REASSOCIATION = 0x00000200,
61 /** Do inlining transformation. */
62 OPT_INLINE = 0x00000400,
64 /** Remove dynamic method dispatch. */
65 OPT_DYN_METH_DISPATCH = 0x00000800,
67 /** Transformations that normalize the firm representation
68 * as removing Ids and Tuples, useless Phis, SymConst(id) -> Const(entity) ...
70 OPT_NORMALIZE = 0x00001000,
72 /** Remove tail-recursion. */
73 OPT_TAIL_RECURSION = 0x00002000,
75 /** Free never called methods */
76 OPT_DEAD_METHOD_ELIMINATION = 0x00004000,
78 /** precise exception context */
79 OPT_PRECISE_EXC_CONTEXT = 0x00008000,
81 /** Free never called methods */
82 OPT_DEAD_METHOD_ELIMINATION_VERBOSE = 0x00010000,
84 /** Do Strength reduction */
85 OPT_STRENGTH_RED = 0x00020000,
87 /** Optimize Loads and Stores */
88 OPT_REDUNDANT_LOADSTORE = 0x00040000,
90 /** Turn off all optimizations. */
91 OPT_OPTIMIZED = 0x40000000,
95 extern optimization_state_t libFIRM_opt;
97 /** Returns constant folding optimization setting. */
98 static INLINE int get_opt_cse(void)
100 return libFIRM_opt & OPT_CSE;
103 /** Returns constant subexpression elimination setting. */
104 static INLINE int get_opt_global_cse(void)
106 return libFIRM_opt & OPT_GLOBAL_CSE;
109 static INLINE int get_opt_strength_red(void)
111 return libFIRM_opt & OPT_STRENGTH_RED;
114 /** Returns global constant subexpression elimination setting. */
115 static INLINE int get_opt_constant_folding(void)
117 return libFIRM_opt & OPT_CONSTANT_FOLDING;
120 /** Returns global constant subexpression elimination setting. */
121 static INLINE int get_opt_redundant_LoadStore(void)
123 return libFIRM_opt & OPT_REDUNDANT_LOADSTORE;
126 /** Returns unreachable code elimination setting. */
127 static INLINE int get_opt_unreachable_code(void)
129 return libFIRM_opt & OPT_UNREACHABLE_CODE;
132 /** Returns Straightening setting. */
133 static INLINE int get_opt_control_flow_straightening(void)
135 return libFIRM_opt & OPT_CONTROL_FLOW_STRAIGHTENING;
138 /** Returns if simplifications in local optimizations setting. */
139 static INLINE int get_opt_control_flow_weak_simplification(void)
141 return libFIRM_opt & OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION;
144 /** Returns strong if and loop simplification setting */
145 static INLINE int get_opt_control_flow_strong_simplification(void)
147 return libFIRM_opt & OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION;
150 /** Returns whether critical edges are removed */
151 static INLINE int get_opt_critical_edges(void)
153 return libFIRM_opt & OPT_CRITICAL_EDGES;
156 /** Returns reassociation setting. */
157 static INLINE int get_opt_reassociation(void)
159 return libFIRM_opt & OPT_REASSOCIATION;
162 /** Returns dead node elimination setting. */
163 static INLINE int get_opt_dead_node_elimination(void)
165 return libFIRM_opt & OPT_DEAD_NODE_ELIMINATION;
168 /** Returns dead method elimination setting. */
169 static INLINE int get_opt_dead_method_elimination(void)
171 return libFIRM_opt & OPT_DEAD_METHOD_ELIMINATION;
174 /** Returns dead method elimination setting. */
175 static INLINE int get_opt_dead_method_elimination_verbose(void)
177 return libFIRM_opt & OPT_DEAD_METHOD_ELIMINATION_VERBOSE;
180 /** Returns global optimization setting */
181 static INLINE int get_opt_optimize(void)
183 return libFIRM_opt & OPT_OPTIMIZED;
186 /** Returns inlining setting. */
187 static INLINE int get_opt_inline(void)
189 return libFIRM_opt & OPT_INLINE;
192 static INLINE int get_opt_dyn_meth_dispatch(void)
194 return libFIRM_opt & OPT_DYN_METH_DISPATCH;
197 static INLINE int get_opt_normalize(void)
199 return libFIRM_opt & OPT_NORMALIZE;
202 /** Returns tail-recursion setting. */
203 static INLINE int get_opt_tail_recursion(void)
205 return libFIRM_opt & OPT_TAIL_RECURSION;
208 /** Returns precise exception context setting. */
209 static INLINE int get_opt_precise_exc_context(void)
211 return libFIRM_opt & OPT_PRECISE_EXC_CONTEXT;
214 #endif /* _IRFLAG_T_H_ */