nsz Git - libfirm/blob - ir/ana/execution_frequency.h

   1 /*
   2  * Project:     libFIRM
   3  * File name:   ir/ana/execution_frequency.h
   4  * Purpose:     Compute an estimate of basic block executions.
   5  * Author:      Goetz Lindenmaier
   6  * Modified by:
   7  * Created:     5.11.2004
   8  * CVS-ID:      $Id$
   9  * Copyright:   (c) 2004 Universität Karlsruhe
  10  * Licence:     This file protected by GPL -  GNU GENERAL PUBLIC LICENSE.
  11  */
  12
  13 #ifndef _EXECUTION_FREQUENCY_H_
  14 #define _EXECUTION_FREQUENCY_H_
  15
  16 /** @file execution_frequency.h
  17  *
  18  * Estimate exectution freqencies of blocks.
  19  *
  20  * @author Goetz Lindenmaier
  21  *
  22  * We assume the start block of a procedure is executed once.  Based on this we
  23  * compute the execution freqency of all blocks.
  24  *
  25  *
  26  */
  27
  28 #include "irnode.h"
  29 #include "irgraph.h"
  30
  31
  32 /** Returns the nunmber of times the block/region is executed according to
  33  *  out estimate. */
  34 double     get_Block_exec_freq(ir_node *b);
  35 double     get_region_exec_freq(void *reg);
  36
  37 /** Compute the execution frequency for all blocks in the given
  38  *  graph.
  39  *
  40  * @param irg                  The graph to be analyzed.
  41  * @param default_loop_weight  The default number of executions of a loop.
  42  */
  43 void compute_execution_frequency(ir_graph *irg, int default_loop_weight, double exception_probability);
  44 void compute_execution_frequencies(int default_loop_weight, double exception_probability);
  45
  46 /** Free occupied memory, reset. */
  47 void free_execution_frequency(void);
  48
  49
  50 #endif /* _EXECUTION_FREQUENCY_H_ */