* File name: ir/ir/irflag.h
* Purpose: Flags to control optimizations.
* Author: Christian Schaefer, Goetz Lindenmaier
- * Modified by:
+ * Modified by: Michael Beck
* Created:
* CVS-ID: $Id$
* Copyright: (c) 1999-2003 Universität Karlsruhe
/**
* @file irflag.h
*
- * Optimization flags.
+ * Flags to customize the behaviour of libfirm.
*
* @author Christian Schaefer
+ *
+ * There are the following groups of flags:
+ * 1. Optimization flags.
+ * a) There is a flag, 'optimize' to turn on/off all optimizations.
+ * b) There are flags for each individual optimization. Some flags turns
+ * transformations in several algorithms on/off.
+ * 2. Normalization flags.
+ * These flags steer transformations of the ir that improve it, as removing
+ * dump Phi nodes (one predecessor, all preds are equal ...), Ids, Tuples ...
+ * 3. Verbosity flags.
+ * a) Flags to steer the level of the information.
+ * b) Flags to steer in which phase information should be dumped.
+ *
*/
#ifndef _IRFLAG_H_
* Default: optimize == 1.
*/
void set_optimize (int value);
-int get_optimize(void);
+int get_optimize(void);
+
+/** This function enables/disables output of information about phases and
+ * controls the verbosity level.
+ *
+ * 0: no output at all.
+ * 1: very short output
+ * >>1: very verbose output.
+ */
+void set_firm_verbosity (int value);
+int get_firm_verbosity (void);
/** Enables/Disables constant folding optimization.
*
*/
void set_opt_global_cse (int value);
+/** Enables/Disables strength reduction.
+ *
+ * If opt_strength_red == 1 perform strength reduction.
+ * See strenth_red.h.
+ *
+ * Default: opt_strength_red = 1;
+ */
+void set_opt_strength_red (int value);
+
+/** Enables/Disables output of information about strength reduction.
+ */
+void set_opt_strength_red_verbose (int value);
+
/** Enables/Disables unreachable code elimination.
*
* If set, evaluate conditions of conditional branch and replace the