fehler119 is C99

[libfirm] / include / libfirm / iroptimize.h

diff --git a/include/libfirm/iroptimize.h b/include/libfirm/iroptimize.h
index 65f326a..88cd223 100644 (file)
--- a/include/libfirm/iroptimize.h
+++ b/include/libfirm/iroptimize.h
@@ -159,10 +159,6 @@ void optimize_funccalls(int force_run, check_alloc_entity_func callback);
  * Based on VanDrunen and Hosking 2004.
  *
  * @param irg  the graph
- *
- * @note
- * Currently completely broken because the used sets do NOT
- * preserve the topological sort of its elements.
  */
 void do_gvn_pre(ir_graph *irg);
 
@@ -443,9 +439,16 @@ void reduce_strength(ir_graph *irg);
  */
 int opt_tail_rec_irg(ir_graph *irg);
 
-/*
+/**
  * Optimize tail-recursion calls for all IR-Graphs.
- * Depends on the flag opt_tail_recursion.
+ * Can currently handle:
+ * - direct return value, i.e. return func().
+ * - additive return value, i.e. return x +/- func()
+ * - multiplicative return value, i.e. return x * func() or return -func()
+ *
+ * The current implementation must be run before optimize_funccalls(),
+ * because it expects the memory edges pointing to calls, which might be
+ * removed by optimize_funccalls().
  */
 void opt_tail_recursion(void);
 
@@ -513,4 +516,14 @@ void normalize_irg_class_casts(ir_graph *irg, gen_pointer_type_to_func gppt_fct)
  */
 void optimize_class_casts(void);
 
+/**
+ * CLiff Click's combo algorithm from "Combining Analyses, combining Optimizations".
+ *
+ * Does conditional constant propagation, unreachable code elimination and optimistic
+ * global value numbering at once.
+ *
+ * @param irg  the graph to run on
+ */
+void combo(ir_graph *irg);
+
 #endif