+
+/** Enable/Disable optimization of dynamic method dispatch.
+ *
+ * This flag enables/disables the optimization of dynamic method dispatch.
+ * If the flag is turned on Sel nodes can be replaced by Const nodes representing
+ * the address of a function.
+ */
+void set_opt_dyn_meth_dispatch (int value);
+int get_opt_dyn_meth_dispatch (void);
+
+/** Enable/Disable type optimization of cast nodes.
+ *
+ * Controls the optimizations in tropt.h. Default: on.
+ */
+void set_opt_optimize_class_casts (int value);
+int get_opt_optimize_class_casts (void);
+void set_opt_optimize_class_casts_verbose (int value);
+int get_opt_optimize_class_casts_verbose (void);
+
+/** Restricts the behaviour of cast optimization.
+ *
+ * If set, downcast are not optimized if they might be
+ * illegal as in (Super)(Sub) (new Super()). Default:
+ * 0 == not suppressed.
+ */
+void set_opt_suppress_downcast_optimization(int value);
+int get_opt_suppress_downcast_optimization(void);
+
+/** Enable/Disable optimization of tail-recursion calls.
+ *
+ * This flag enables/disables the optimization tail-recursion call.
+ * If the flag is turned on tail-recursion calls are optimized into loops.
+ */
+void set_opt_tail_recursion(int value);
+void set_opt_tail_recursion_verbose(int value);
+
+/** Enable/Disable floating of fragile ops.
+ *
+ * This flags enables/disables the floating of fragile operations.
+ * If this flag is on, fragile operations which are known to NOT raise
+ * an exception can be place to other basic blocks.
+ * Otherwise they remain in the block they were created.
+ */
+void set_opt_fragile_ops(int value);
+
+/**
+ * Enable/Disable if conversion.
+ *
+ * If conversion tries to turn Conds into Mux nodes to eliminate
+ * control flow.
+ */
+void set_opt_if_conversion(int value);
+
+/**
+ * Enable/Disable real function call optimization.
+ *
+ * Real function call optimization detects "real functions" and
+ * allows the floationg of Call nodes.
+ */
+void set_opt_real_function_call(int value);
+
+/** Enable/Disable normalizations of the firm representation.
+ *
+ * This flag guards transformations that normalize the firm representation
+ * as removing Ids and Tuples, useless Phis, replacing SymConst(id) by
+ * Const(entity) and others.
+ * The transformations guarded by this flag are not guarded by flag
+ * "optimize".
+ * Many algorithms operating on firm can not deal with constructs in
+ * the non-normalized representation.
+ * default: 1
+ * @@@ ATTENTION: not all such transformations are guarded by a flag.
+ */
+void set_opt_normalize (int value);
+
+
+/** Enable/Disable precise exception context. */
+void set_opt_precise_exc_context(int value);
+
+/**
+ * Save the current optimization state.
+ */
+void save_optimization_state(optimization_state_t *state);
+
+/**
+ * Restore the current optimization state.
+ */
+void restore_optimization_state(const optimization_state_t *state);