struct bblock_t *block;
};
-#ifndef __cplusplus
struct backend_instruction;
-#endif
struct bblock_t {
#ifdef __cplusplus
DECLARE_RALLOC_CXX_OPERATORS(bblock_t)
- bblock_t();
+ explicit bblock_t(cfg_t *cfg);
void add_successor(void *mem_ctx, bblock_t *successor);
- void dump(backend_visitor *v);
+ bool is_predecessor_of(const bblock_t *block) const;
+ bool is_successor_of(const bblock_t *block) const;
+ bool can_combine_with(const bblock_t *that) const;
+ void combine_with(bblock_t *that);
+ void dump(backend_shader *s) const;
+
+ backend_instruction *start();
+ const backend_instruction *start() const;
+ backend_instruction *end();
+ const backend_instruction *end() const;
+
+ bblock_t *next();
+ const bblock_t *next() const;
+ bblock_t *prev();
+ const bblock_t *prev() const;
+
+ bool starts_with_control_flow() const;
+ bool ends_with_control_flow() const;
+
+ backend_instruction *first_non_control_flow_inst();
+ backend_instruction *last_non_control_flow_inst();
#endif
struct exec_node link;
-
- struct backend_instruction *start;
- struct backend_instruction *end;
+ struct cfg_t *cfg;
+ struct bblock_t *idom;
int start_ip;
int end_ip;
+ struct exec_list instructions;
struct exec_list parents;
struct exec_list children;
int num;
- /* If the current basic block ends in an IF, ELSE, or ENDIF instruction,
- * these pointers will hold the locations of the other associated control
- * flow instructions.
- *
- * Otherwise they are NULL.
- */
- struct backend_instruction *if_inst;
- struct backend_instruction *else_inst;
- struct backend_instruction *endif_inst;
+ unsigned cycle_count;
};
+static inline struct backend_instruction *
+bblock_start(struct bblock_t *block)
+{
+ return (struct backend_instruction *)exec_list_get_head(&block->instructions);
+}
+
+static inline const struct backend_instruction *
+bblock_start_const(const struct bblock_t *block)
+{
+ return (const struct backend_instruction *)exec_list_get_head_const(&block->instructions);
+}
+
+static inline struct backend_instruction *
+bblock_end(struct bblock_t *block)
+{
+ return (struct backend_instruction *)exec_list_get_tail(&block->instructions);
+}
+
+static inline const struct backend_instruction *
+bblock_end_const(const struct bblock_t *block)
+{
+ return (const struct backend_instruction *)exec_list_get_tail_const(&block->instructions);
+}
+
+static inline struct bblock_t *
+bblock_next(struct bblock_t *block)
+{
+ if (exec_node_is_tail_sentinel(block->link.next))
+ return NULL;
+
+ return (struct bblock_t *)block->link.next;
+}
+
+static inline const struct bblock_t *
+bblock_next_const(const struct bblock_t *block)
+{
+ if (exec_node_is_tail_sentinel(block->link.next))
+ return NULL;
+
+ return (const struct bblock_t *)block->link.next;
+}
+
+static inline struct bblock_t *
+bblock_prev(struct bblock_t *block)
+{
+ if (exec_node_is_head_sentinel(block->link.prev))
+ return NULL;
+
+ return (struct bblock_t *)block->link.prev;
+}
+
+static inline const struct bblock_t *
+bblock_prev_const(const struct bblock_t *block)
+{
+ if (exec_node_is_head_sentinel(block->link.prev))
+ return NULL;
+
+ return (const struct bblock_t *)block->link.prev;
+}
+
+static inline bool
+bblock_starts_with_control_flow(const struct bblock_t *block)
+{
+ enum opcode op = bblock_start_const(block)->opcode;
+ return op == BRW_OPCODE_DO || op == BRW_OPCODE_ENDIF;
+}
+
+static inline bool
+bblock_ends_with_control_flow(const struct bblock_t *block)
+{
+ enum opcode op = bblock_end_const(block)->opcode;
+ return op == BRW_OPCODE_IF ||
+ op == BRW_OPCODE_ELSE ||
+ op == BRW_OPCODE_WHILE ||
+ op == BRW_OPCODE_BREAK ||
+ op == BRW_OPCODE_CONTINUE;
+}
+
+static inline struct backend_instruction *
+bblock_first_non_control_flow_inst(struct bblock_t *block)
+{
+ struct backend_instruction *inst = bblock_start(block);
+ if (bblock_starts_with_control_flow(block))
+#ifdef __cplusplus
+ inst = (struct backend_instruction *)inst->next;
+#else
+ inst = (struct backend_instruction *)inst->link.next;
+#endif
+ return inst;
+}
+
+static inline struct backend_instruction *
+bblock_last_non_control_flow_inst(struct bblock_t *block)
+{
+ struct backend_instruction *inst = bblock_end(block);
+ if (bblock_ends_with_control_flow(block))
+#ifdef __cplusplus
+ inst = (struct backend_instruction *)inst->prev;
+#else
+ inst = (struct backend_instruction *)inst->link.prev;
+#endif
+ return inst;
+}
+
+#ifdef __cplusplus
+inline backend_instruction *
+bblock_t::start()
+{
+ return bblock_start(this);
+}
+
+inline const backend_instruction *
+bblock_t::start() const
+{
+ return bblock_start_const(this);
+}
+
+inline backend_instruction *
+bblock_t::end()
+{
+ return bblock_end(this);
+}
+
+inline const backend_instruction *
+bblock_t::end() const
+{
+ return bblock_end_const(this);
+}
+
+inline bblock_t *
+bblock_t::next()
+{
+ return bblock_next(this);
+}
+
+inline const bblock_t *
+bblock_t::next() const
+{
+ return bblock_next_const(this);
+}
+
+inline bblock_t *
+bblock_t::prev()
+{
+ return bblock_prev(this);
+}
+
+inline const bblock_t *
+bblock_t::prev() const
+{
+ return bblock_prev_const(this);
+}
+
+inline bool
+bblock_t::starts_with_control_flow() const
+{
+ return bblock_starts_with_control_flow(this);
+}
+
+inline bool
+bblock_t::ends_with_control_flow() const
+{
+ return bblock_ends_with_control_flow(this);
+}
+
+inline backend_instruction *
+bblock_t::first_non_control_flow_inst()
+{
+ return bblock_first_non_control_flow_inst(this);
+}
+
+inline backend_instruction *
+bblock_t::last_non_control_flow_inst()
+{
+ return bblock_last_non_control_flow_inst(this);
+}
+#endif
+
struct cfg_t {
#ifdef __cplusplus
DECLARE_RALLOC_CXX_OPERATORS(cfg_t)
cfg_t(exec_list *instructions);
~cfg_t();
+ void remove_block(bblock_t *block);
+
bblock_t *new_block();
void set_next_block(bblock_t **cur, bblock_t *block, int ip);
void make_block_array();
+ void calculate_idom();
+ static bblock_t *intersect(bblock_t *b1, bblock_t *b2);
- void dump(backend_visitor *v);
+ void dump(backend_shader *s);
+ void dump_cfg();
+ void dump_domtree();
#endif
void *mem_ctx;
struct exec_list block_list;
struct bblock_t **blocks;
int num_blocks;
+
+ bool idom_dirty;
+
+ unsigned cycle_count;
};
+/* Note that this is implemented with a double for loop -- break will
+ * break from the inner loop only!
+ */
#define foreach_block_and_inst(__block, __type, __inst, __cfg) \
foreach_block (__block, __cfg) \
foreach_inst_in_block (__type, __inst, __block)
+/* Note that this is implemented with a double for loop -- break will
+ * break from the inner loop only!
+ */
#define foreach_block_and_inst_safe(__block, __type, __inst, __cfg) \
foreach_block_safe (__block, __cfg) \
foreach_inst_in_block_safe (__type, __inst, __block)
#define foreach_block(__block, __cfg) \
foreach_list_typed (bblock_t, __block, link, &(__cfg)->block_list)
+#define foreach_block_reverse(__block, __cfg) \
+ foreach_list_typed_reverse (bblock_t, __block, link, &(__cfg)->block_list)
+
#define foreach_block_safe(__block, __cfg) \
foreach_list_typed_safe (bblock_t, __block, link, &(__cfg)->block_list)
+#define foreach_block_reverse_safe(__block, __cfg) \
+ foreach_list_typed_reverse_safe (bblock_t, __block, link, &(__cfg)->block_list)
+
#define foreach_inst_in_block(__type, __inst, __block) \
- for (__type *__inst = (__type *)__block->start; \
- __inst != __block->end->next; \
- __inst = (__type *)__inst->next)
+ foreach_in_list(__type, __inst, &(__block)->instructions)
#define foreach_inst_in_block_safe(__type, __inst, __block) \
- for (__type *__inst = (__type *)__block->start, \
- *__next = (__type *)__inst->next, \
- *__end = (__type *)__block->end->next->next; \
- __next != __end; \
+ for (__type *__inst = (__type *)__block->instructions.head_sentinel.next, \
+ *__next = (__type *)__inst->next; \
+ __next != NULL; \
__inst = __next, \
__next = (__type *)__next->next)
#define foreach_inst_in_block_reverse(__type, __inst, __block) \
- for (__type *__inst = (__type *)__block->end; \
- __inst != __block->start->prev; \
- __inst = (__type *)__inst->prev)
+ foreach_in_list_reverse(__type, __inst, &(__block)->instructions)
+
+#define foreach_inst_in_block_reverse_safe(__type, __inst, __block) \
+ foreach_in_list_reverse_safe(__type, __inst, &(__block)->instructions)
+
+#define foreach_inst_in_block_starting_from(__type, __scan_inst, __inst) \
+ for (__type *__scan_inst = (__type *)__inst->next; \
+ !__scan_inst->is_tail_sentinel(); \
+ __scan_inst = (__type *)__scan_inst->next)
+
+#define foreach_inst_in_block_reverse_starting_from(__type, __scan_inst, __inst) \
+ for (__type *__scan_inst = (__type *)__inst->prev; \
+ !__scan_inst->is_head_sentinel(); \
+ __scan_inst = (__type *)__scan_inst->prev)
#endif /* BRW_CFG_H */
projects / mesa.git / blobdiff