X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbecopyopt.h;h=ddf14366e03b090175c345bcc146b15ef957d512;hb=ccdf802c598f7adc5e35fff42fed029c59f48a57;hp=b8bc031895c2c9b0bd41e3a1a82688fc61e58c75;hpb=79ffe731543f1863e65714e997b91374519d3cc7;p=libfirm diff --git a/ir/be/becopyopt.h b/ir/be/becopyopt.h index b8bc03189..ddf14366e 100644 --- a/ir/be/becopyopt.h +++ b/ir/be/becopyopt.h @@ -1,32 +1,76 @@ +/* + * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved. + * + * This file is part of libFirm. + * + * This file may be distributed and/or modified under the terms of the + * GNU General Public License version 2 as published by the Free Software + * Foundation and appearing in the file LICENSE.GPL included in the + * packaging of this file. + * + * Licensees holding valid libFirm Professional Edition licenses may use + * this file in accordance with the libFirm Commercial License. + * Agreement provided with the Software. + * + * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE + * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE. + */ + /** - * Author: Daniel Grund - * Date: 11.04.2005 - * Copyright: (c) Universitaet Karlsruhe - * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE. + * @file + * @brief Copy minimization driver. + * @author Daniel Grund + * @date 11.04.2005 + * @version $Id$ * * Main file for the optimization reducing the copies needed for: * - Phi coalescing * - Register-constrained nodes * - Two-address code instructions */ - -#ifndef _BECOPYOPT_H -#define _BECOPYOPT_H +#ifndef FIRM_BE_BECOPYOPT_H +#define FIRM_BE_BECOPYOPT_H #include #include "firm_types.h" #include "bechordal.h" +#include "beutil.h" /** - * Has to be called during the firm init phase + * Flags for dumping the IFG. */ -void be_copy_opt_init(void); +enum { + CO_IFG_DUMP_COLORS = 1, /**< Dump the graph colored. */ + CO_IFG_DUMP_LABELS = 2, /**< Dump node/edge labels. */ + CO_IFG_DUMP_SHAPE = 4, /**< Give constrained nodes special shapes. */ + CO_IFG_DUMP_CONSTR = 8 /**< Dump the node constraints in the label. */ +}; -typedef int(*cost_fct_t)(ir_node*, ir_node*, int); +/** + * Algorithms. + */ +enum { + CO_ALGO_NONE, + CO_ALGO_HEUR, + CO_ALGO_HEUR2, + CO_ALGO_HEUR3, + CO_ALGO_HEUR4, + CO_ALGO_ILP, + CO_ALGO_LAST +}; + +/** The driver for copy minimization. */ +void co_driver(be_chordal_env_t *cenv); typedef struct _copy_opt_t copy_opt_t; +typedef int(*cost_fct_t)(const copy_opt_t *, ir_node *, ir_node *, int); + +/** A coalescing algorithm. */ +typedef int (co_algo_t)(copy_opt_t *); + /** * Generate the problem. Collect all information and optimizable nodes. */ @@ -45,24 +89,48 @@ void free_copy_opt(copy_opt_t *co); int co_is_optimizable_root(const copy_opt_t *co, ir_node *irn); /** - * Checks if the irn is a non-interfering argument of a node which 'is_optimizable' + * Computes the costs of a copy according to loop depth + * @param co The copy opt object. + * @param pos the argument position of arg in the root arguments + * @return Must be >= 0 in all cases. */ -int co_is_optimizable_arg(const copy_opt_t *co, ir_node *irn); +int co_get_costs_loop_depth(const copy_opt_t *co, ir_node *root, ir_node* arg, int pos); /** - * Computes the costs of a copy according to loop depth - * @param pos: the argument position of arg in the root arguments + * Computes the costs of a copy according to execution frequency + * @param co The copy opt object. + * @param pos the argument position of arg in the root arguments * @return Must be >= 0 in all cases. */ -int co_get_costs_loop_depth(ir_node *root, ir_node* arg, int pos); +int co_get_costs_exec_freq(const copy_opt_t *co, ir_node *root, ir_node* arg, int pos); /** * All costs equal 1. Using this will reduce the _number_ of copies. + * @param co The copy opt object. * @return Must be >= 0 in all cases. */ -int co_get_costs_all_one(ir_node *root, ir_node* arg, int pos); +int co_get_costs_all_one(const copy_opt_t *co, ir_node *root, ir_node* arg, int pos); +/** + * Statistics over a copy optimization module. + */ +typedef struct { + ulong64 aff_edges; /**< number of affinity edges. */ + ulong64 aff_nodes; /**< number of nodes with incident affinity edges. */ + ulong64 aff_int; /**< number of affinity edges whose nodes also interfere. */ + ulong64 inevit_costs; /**< costs which cannot be evited (due to interfering affinities). */ + ulong64 max_costs; /**< all costs of the affinities. */ + ulong64 costs; /**< The costs of the current coloring. */ + ulong64 unsatisfied_edges; /**< The number of unequally colored affinity edges. */ +} co_complete_stats_t; +/** + * Collect statistics of a copy optimization module. + * @param co The copy optimization environment. + * @param stat Where to put the stats. + * @note This requires the graph info to be computed. + */ +void co_complete_stats(const copy_opt_t *co, co_complete_stats_t *stat); /** @@ -82,14 +150,29 @@ void co_free_ou_structure(copy_opt_t *co); */ int co_solve_heuristic(copy_opt_t *co); -void co_solve_heuristic_new(copy_opt_t *co); - +/** + * Apply Park/Moon coalescing to the graph. + * @param co The copy optimization data structure. + */ +void co_solve_park_moon(copy_opt_t *co); /** * Solves the copy minimization problem using another heuristic approach. * Uses the OU and the GRAPH data structure. */ -void co_solve_heuristic_new(copy_opt_t *co); +int co_solve_heuristic_new(copy_opt_t *co); + +/** + * Solves the copy minimization problem using another heuristic approach implemented in Java. + * This function needs a JVM which is started to call the Java module. + * Uses the GRAPH data structure. + */ +int co_solve_heuristic_java(copy_opt_t *co); + +/** + * This is the pure C implementation of co_solve_heuristic_java(). + */ +int co_solve_heuristic_mst(copy_opt_t *co); /** * Returns the maximal costs possible, i.e. the costs if all @@ -130,7 +213,19 @@ int co_get_lower_bound(const copy_opt_t *co); */ void co_dump_appel_graph(const copy_opt_t *co, FILE *f); - +/** + * Dumps the IFG of the program splitting after each instruction in the Appel format. + * @param co The copy opt object. + * @param f The file to dump to. + */ +void co_dump_appel_graph_cliques(const copy_opt_t *co, FILE *f); +/** + * Dump the interference graph with the affinity edges and the coloring. + * @param co The copy opt structure. + * @param f The file to dump to. + * @param flags The dump flags (see enum above). + */ +void co_dump_ifg_dot(const copy_opt_t *co, FILE *f, unsigned flags); /** * Constructs another internal representation of the affinity edges @@ -156,7 +251,7 @@ int co_solve_ilp1(copy_opt_t *co, double time_limit); * Uses the OU and the GRAPH data structure * Dependency of the OU structure can be removed */ -int co_solve_ilp2(copy_opt_t *co, double time_limit); +int co_solve_ilp2(copy_opt_t *co); /** * Checks if a node is optimizable, viz has something to do with coalescing. @@ -164,4 +259,4 @@ int co_solve_ilp2(copy_opt_t *co, double time_limit); */ int co_gs_is_optimizable(copy_opt_t *co, ir_node *irn); -#endif /* _BECOPYOPT_H */ +#endif /* FIRM_BE_BECOPYOPT_H */