+/*
+ * This file is part of libFirm.
+ * Copyright (C) 2012 University of Karlsruhe.
+ */
/**
- * 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
*/
+#ifndef FIRM_BE_BECHORDAL_T_H
+#define FIRM_BE_BECHORDAL_T_H
-#ifndef _BECHORDAL_T_H
-#define _BECHORDAL_T_H
+#include "firm_types.h"
+#include "list.h"
+#include "pmap.h"
+#include "bitset.h"
+#include "obst.h"
+#include "debug.h"
-#define BUILD_GRAPH
+#include "bechordal.h"
+#include "beifg.h"
/**
* A liveness interval border.
*/
-typedef struct _border_t {
-#ifdef DEBUG_libfirm
- unsigned magic; /**< A magic number for checking. */
-#endif
- struct list_head list; /**< list head for queuing. */
- struct _border_t *other_end; /**< The other end of the border. */
- const 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;
-
-#ifdef BUILD_GRAPH
-typedef struct _if_edge_t {
- int src, tgt;
-} if_edge_t;
-
-set *be_ra_get_ifg(ir_graph *irg);
-#endif
-
-extern void be_ra_chordal_spill(ir_graph *irg);
-
-#endif /* _BECHORDAL_T_H */
+struct border_t {
+ struct list_head list; /**< list head for queuing. */
+ ir_node *irn; /**< The node. */
+ unsigned step; /**< The number equal to the interval border. */
+ 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. */
+ 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. */
+ pmap *border_heads; /**< Maps blocks to border heads. */
+ be_ifg_t *ifg; /**< The interference graph. */
+ bitset_t *allocatable_regs; /**< set of allocatable registers */
+};
+
+static inline struct list_head *get_block_border_head(be_chordal_env_t const *const inf, ir_node *const bl)
+{
+ return pmap_get(list_head, inf->border_heads, bl);
+}
+
+#define foreach_border_head(head, pos) list_for_each_entry_reverse(border_t, pos, head, list)
+
+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_SPLIT = (1 << 10),
+ BE_CH_DUMP_APPEL = (1 << 11),
+ 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,
+};
+
+struct be_ra_chordal_opts_t {
+ unsigned dump_flags;
+ int lower_perm_opt;
+ int vrfy_option;
+};
+
+void check_for_memory_operands(ir_graph *irg);
+
+#endif /* FIRM_BE_BECHORDAL_T_H */
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