2 * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief Internal data structures for the chordal register allocator.
23 * @author Sebastian Hack
26 #ifndef FIRM_BE_BECHORDAL_T_H
27 #define FIRM_BE_BECHORDAL_T_H
29 #include "firm_types.h"
36 #include "bechordal.h"
41 * A liveness interval border.
44 DEBUG_ONLY(unsigned magic;) /**< A magic number for checking. */
45 struct list_head list; /**< list head for queuing. */
46 border_t *other_end; /**< The other end of the border. */
47 ir_node *irn; /**< The node. */
48 unsigned step; /**< The number equal to the interval border. */
49 unsigned pressure; /**< The pressure at this interval border. (The border itself is counting). */
50 unsigned is_def : 1; /**< Does this border denote a use or a def. */
51 unsigned is_real : 1; /**< Is the def/use real? Or is it just
52 inserted at block beginnings or ends
53 to ensure that inside a block, each
54 value has one begin and one end. */
58 * Environment for each of the chordal register allocator phases
60 struct be_chordal_env_t {
61 struct obstack *obst; /**< An obstack for temporary storage. */
62 be_ra_chordal_opts_t *opts; /**< A pointer to the chordal ra options. */
63 ir_graph *irg; /**< The graph under examination. */
64 const arch_register_class_t *cls; /**< The current register class. */
65 pmap *border_heads; /**< Maps blocks to border heads. */
66 be_ifg_t *ifg; /**< The interference graph. */
67 bitset_t *allocatable_regs; /**< set of allocatable registers */
70 static inline struct list_head *get_block_border_head(be_chordal_env_t const *const inf, ir_node *const bl)
72 return pmap_get(list_head, inf->border_heads, bl);
75 #define foreach_border_head(head, pos) list_for_each_entry_reverse(border_t, pos, head, list)
78 * Check, if an irn is of the register class currently under processing.
79 * @param env The chordal environment.
80 * @param irn The node.
81 * @return whether the node is of that register class.
83 static inline bool has_reg_class(be_chordal_env_t const *const env, ir_node const *const irn)
85 return arch_irn_consider_in_reg_alloc(env->cls, irn);
90 BE_CH_DUMP_NONE = (1 << 0),
91 BE_CH_DUMP_SPILL = (1 << 1),
92 BE_CH_DUMP_LIVE = (1 << 2),
93 BE_CH_DUMP_COLOR = (1 << 3),
94 BE_CH_DUMP_COPYMIN = (1 << 4),
95 BE_CH_DUMP_SSADESTR = (1 << 5),
96 BE_CH_DUMP_TREE_INTV = (1 << 6),
97 BE_CH_DUMP_CONSTR = (1 << 7),
98 BE_CH_DUMP_SPILLSLOTS = (1 << 8),
99 BE_CH_DUMP_LOWER = (1 << 9),
100 BE_CH_DUMP_SPLIT = (1 << 10),
101 BE_CH_DUMP_APPEL = (1 << 11),
102 BE_CH_DUMP_ALL = 2 * BE_CH_DUMP_APPEL - 1,
104 /* lower perm options */
105 BE_CH_LOWER_PERM_SWAP = 1,
106 BE_CH_LOWER_PERM_COPY = 2,
111 BE_CH_VRFY_ASSERT = 3,
114 struct be_ra_chordal_opts_t {
119 char ilp_server[128];
122 void check_for_memory_operands(ir_graph *irg);
124 #endif /* FIRM_BE_BECHORDAL_T_H */