+/*
+ * 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.
+ */
/**
- * Internal datastructures for the chordal register allocator.
- * @author Sebastian Hack
- * @date 25.1.2005
+ * @file
+ * @brief Internal data structures for the chordal register allocator.
+ * @author Sebastian Hack
+ * @date 25.01.2005
+ * @version $Id$
*/
+#ifndef FIRM_BE_BECHORDAL_T_H
+#define FIRM_BE_BECHORDAL_T_H
-#ifndef _BECHORDAL_T_H
-#define _BECHORDAL_T_H
-
-#include <stdlib.h>
-
-#include "bitset.h"
+#include "firm_types.h"
#include "list.h"
-#include "obst.h"
-#include "pset.h"
#include "pmap.h"
-#include "set.h"
-
-#include "irnode.h"
-#include "irgraph.h"
+#include "bitset.h"
+#include "obst.h"
+#include "debug.h"
-#include "be_t.h"
-#include "bearch.h"
+#include "bechordal.h"
+#include "beirg.h"
+#include "beifg.h"
/** Defines an invalid register index. */
#define NO_COLOR (-1)
-#define BUILD_GRAPH
-
-#define DBG_CHORDAL "firm.be.ra.chordal"
-
/**
* A liveness interval border.
*/
-typedef struct _border_t {
- unsigned magic; /**< A magic number for checking. */
- struct list_head list; /**< list head for queuing. */
- struct _border_t *other_end; /**< The other end of the border. */
- ir_node *irn; /**< The node. */
- unsigned step; /**< The number equal to the interval border. */
- unsigned pressure; /**< The pressure at this interval border.
- (The border itself is counting). */
- unsigned is_def : 1; /**< Does this border denote a use or a def. */
- unsigned is_real : 1; /**< Is the def/use real? Or is it just inserted
- at block beginnings or ends to ensure that inside
- a block, each value has one begin and one end. */
-} border_t;
+struct border_t {
+ DEBUG_ONLY(unsigned magic;) /**< A magic number for checking. */
+ struct list_head list; /**< list head for queuing. */
+ border_t *other_end; /**< The other end of the border. */
+ ir_node *irn; /**< The node. */
+ unsigned step; /**< The number equal to the interval border. */
+ unsigned pressure; /**< The pressure at this interval border. (The border itself is counting). */
+ unsigned is_def : 1; /**< Does this border denote a use or a def. */
+ unsigned is_real : 1; /**< Is the def/use real? Or is it just
+ inserted at block beginnings or ends
+ to ensure that inside a block, each
+ value has one begin and one end. */
+};
/**
* Environment for each of the chordal register allocator phases
*/
-struct _be_chordal_env_t {
- struct obstack obst; /**< An obstack for temporary storage. */
- const be_main_session_env_t *session_env; /**< The current session. */
- pmap *border_heads; /**< Maps blocks to border heads. */
-
-#ifdef BUILD_GRAPH
- set *nodes; /**< The interference graph nodes. */
- set *edges; /**< The interference graph edges. */
-#endif
-
- bitset_t *live; /**< A liveness bitset. */
- bitset_t *colors; /**< The color mask. */
- bitset_t *in_colors; /**< Colors used by live in values. */
- int colors_n; /**< The number of colors. */
+struct be_chordal_env_t {
+ struct obstack *obst; /**< An obstack for temporary storage. */
+ be_ra_chordal_opts_t *opts; /**< A pointer to the chordal ra options. */
+ ir_graph *irg; /**< The graph under examination. */
const arch_register_class_t *cls; /**< The current register class. */
- void *data; /**< Some pointer, to which different
- phases can attach data to. */
+ pmap *border_heads; /**< Maps blocks to border heads. */
+ be_ifg_t *ifg; /**< The interference graph. */
+ bitset_t *ignore_colors;/**< A set of colors which shall be ignored in register allocation. */
};
-typedef struct _be_chordal_env_t be_chordal_env_t;
-
-static INLINE struct list_head *_get_block_border_head(const be_chordal_env_t *inf, ir_node *bl) {
+static inline struct list_head *_get_block_border_head(const be_chordal_env_t *inf, ir_node *bl) {
return pmap_get(inf->border_heads, bl);
}
#define get_block_border_head(info, bl) _get_block_border_head(info, bl)
-int nodes_interfere(const be_chordal_env_t *env, const ir_node *a, const ir_node *b);
-
-#ifdef BUILD_GRAPH
-typedef struct _if_node_t {
- int nnr;
- pset *neighb;
-} if_node_t;
-
-typedef struct _if_edge_t {
- int src, tgt;
-} if_edge_t;
-
-set *be_ra_get_ifg_edges(const be_chordal_env_t *env);
-set *be_ra_get_ifg_nodes(const be_chordal_env_t *env);
-
-int ifg_has_edge(const be_chordal_env_t *env, const if_node_t *n1, const if_node_t* n2);
-
-#define ifn_get_degree(ifnode) pset_count(ifnode->neighb)
-#define foreach_neighb(ifnode, curr) \
- for(curr=pset_first(ifnode->neighb); curr; curr=pset_next(ifnode->neighb))
-#endif
-
-extern void be_ra_chordal_spill(be_chordal_env_t *env);
-
-/**
- * Allocate registers for an ir graph.
- * @param irg The graph.
- * @return Some internal data to be freed with be_ra_chordal_done().
- */
-be_chordal_env_t *be_ra_chordal(
- const be_main_session_env_t *env,
- const arch_register_class_t *cls);
-
-/**
- * Check current register allocation for correctness.
- * Interfering nodes have different colors
- * Register constraints
- * O(n^2)
- */
-void be_ra_chordal_check(be_chordal_env_t *chordal_env);
-
-/**
- * Free data from the chordal register allocation.
- * @param irg The graph.
- */
-void be_ra_chordal_done(be_chordal_env_t *info);
+#define foreach_border_head(head, pos) list_for_each_entry_reverse(border_t, pos, head, list)
+#define border_next(b) (list_entry((b)->list.next, border_t, list))
+#define border_prev(b) (list_entry((b)->list.prev, border_t, list))
+
+#define chordal_has_class(chordal_env, irn) \
+ arch_irn_consider_in_reg_alloc(chordal_env->cls, irn)
+
+void be_ra_chordal_color(be_chordal_env_t *chordal_env);
+
+enum {
+ /* Dump flags */
+ BE_CH_DUMP_NONE = (1 << 0),
+ BE_CH_DUMP_SPILL = (1 << 1),
+ BE_CH_DUMP_LIVE = (1 << 2),
+ BE_CH_DUMP_COLOR = (1 << 3),
+ BE_CH_DUMP_COPYMIN = (1 << 4),
+ BE_CH_DUMP_SSADESTR = (1 << 5),
+ BE_CH_DUMP_TREE_INTV = (1 << 6),
+ BE_CH_DUMP_CONSTR = (1 << 7),
+ BE_CH_DUMP_SPILLSLOTS = (1 << 8),
+ BE_CH_DUMP_LOWER = (1 << 9),
+ BE_CH_DUMP_APPEL = (1 << 10),
+ BE_CH_DUMP_ALL = 2 * BE_CH_DUMP_APPEL - 1,
+
+ /* lower perm options */
+ BE_CH_LOWER_PERM_SWAP = 1,
+ BE_CH_LOWER_PERM_COPY = 2,
+
+ /* verify options */
+ BE_CH_VRFY_OFF = 1,
+ BE_CH_VRFY_WARN = 2,
+ BE_CH_VRFY_ASSERT = 3,
+};
-/**
- * Init some things for the chordal register allocator.
- * This must be called before Firm is inited.
- */
-void be_ra_chordal_init(void);
+struct be_ra_chordal_opts_t {
+ int dump_flags;
+ int lower_perm_opt;
+ int vrfy_option;
-/**
- * Check the register pressure in a graph.
- * @param env The sesion env.
- * @param cls The register class to consider.
- */
-void be_check_pressure(const be_main_session_env_t *env, const arch_register_class_t *cls);
+ char ilp_server[128];
+ char ilp_solver[128];
+};
+void check_for_memory_operands(ir_graph *irg);
-#endif /* _BECHORDAL_T_H */
+#endif /* FIRM_BE_BECHORDAL_T_H */
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