in profile.c */
} *edge;
-#define EDGE_FALLTHRU 1
-#define EDGE_ABNORMAL 2
-#define EDGE_ABNORMAL_CALL 4
-#define EDGE_EH 8
-#define EDGE_FAKE 16
-#define EDGE_DFS_BACK 32
-#define EDGE_CAN_FALLTHRU 64
+#define EDGE_FALLTHRU 1 /* 'Straight line' flow */
+#define EDGE_ABNORMAL 2 /* Strange flow, like computed
+ label, or eh */
+#define EDGE_ABNORMAL_CALL 4 /* Call with abnormal exit
+ like an exception, or sibcall */
+#define EDGE_EH 8 /* Exception throw */
+#define EDGE_FAKE 16 /* Not a real edge (profile.c) */
+#define EDGE_DFS_BACK 32 /* A backwards edge */
+#define EDGE_CAN_FALLTHRU 64 /* Candidate for straight line
+ flow. */
#define EDGE_COMPLEX (EDGE_ABNORMAL | EDGE_ABNORMAL_CALL | EDGE_EH)
#define FOR_EACH_BB_REVERSE(BB) \
FOR_BB_BETWEEN (BB, EXIT_BLOCK_PTR->prev_bb, ENTRY_BLOCK_PTR, prev_bb)
+/* Cycles through _all_ basic blocks, even the fake ones (entry and
+ exit block). */
+
+#define FOR_ALL_BB(BB) \
+ for (BB = ENTRY_BLOCK_PTR; BB; BB = BB->next_bb)
+
/* What registers are live at the setjmp call. */
extern regset regs_live_at_setjmp;
/* Special labels found during CFG build. */
-extern rtx label_value_list, tail_recursion_label_list;
+extern GTY(()) rtx label_value_list;
+extern GTY(()) rtx tail_recursion_label_list;
extern struct obstack flow_obstack;
#define BLOCK_NUM(INSN) (BLOCK_FOR_INSN (INSN)->index + 0)
#define set_block_for_insn(INSN, BB) (BLOCK_FOR_INSN (INSN) = BB)
-extern void compute_bb_for_insn PARAMS ((int));
+extern void compute_bb_for_insn PARAMS ((void));
extern void free_bb_for_insn PARAMS ((void));
extern void update_bb_for_insn PARAMS ((basic_block));
extern void redirect_edge_succ PARAMS ((edge, basic_block));
extern edge redirect_edge_succ_nodup PARAMS ((edge, basic_block));
extern void redirect_edge_pred PARAMS ((edge, basic_block));
-extern basic_block create_basic_block_structure PARAMS ((int, rtx, rtx, rtx, basic_block));
+extern basic_block create_basic_block_structure PARAMS ((rtx, rtx, rtx, basic_block));
extern basic_block create_basic_block PARAMS ((rtx, rtx, basic_block));
extern int flow_delete_block PARAMS ((basic_block));
extern int flow_delete_block_noexpunge PARAMS ((basic_block));
extern void mark_critical_edges PARAMS ((void));
extern rtx first_insn_after_basic_block_note PARAMS ((basic_block));
+/* Dominator information for basic blocks. */
+
+typedef struct dominance_info *dominance_info;
+
/* Structure to hold information for each natural loop. */
struct loop
{
struct cfg
{
/* The bitmap vector of dominators or NULL if not computed. */
- sbitmap *dom;
+ dominance_info dom;
/* The ordering of the basic blocks in a depth first search. */
int *dfs_order;
sbitmap shared_headers;
};
+/* Structure to group all of the information to process IF-THEN and
+ IF-THEN-ELSE blocks for the conditional execution support. This
+ needs to be in a public file in case the IFCVT macros call
+ functions passing the ce_if_block data structure. */
+
+typedef struct ce_if_block
+{
+ basic_block test_bb; /* First test block. */
+ basic_block then_bb; /* THEN block. */
+ basic_block else_bb; /* ELSE block or NULL. */
+ basic_block join_bb; /* Join THEN/ELSE blocks. */
+ basic_block last_test_bb; /* Last bb to hold && or || tests. */
+ int num_multiple_test_blocks; /* # of && and || basic blocks. */
+ int num_and_and_blocks; /* # of && blocks. */
+ int num_or_or_blocks; /* # of || blocks. */
+ int num_multiple_test_insns; /* # of insns in && and || blocks. */
+ int and_and_p; /* Complex test is &&. */
+ int num_then_insns; /* # of insns in THEN block. */
+ int num_else_insns; /* # of insns in ELSE block. */
+ int pass; /* Pass number. */
+
+#ifdef IFCVT_EXTRA_FIELDS
+ IFCVT_EXTRA_FIELDS /* Any machine dependent fields. */
+#endif
+
+} ce_if_block_t;
+
extern int flow_loops_find PARAMS ((struct loops *, int flags));
extern int flow_loops_update PARAMS ((struct loops *, int flags));
extern void flow_loops_free PARAMS ((struct loops *));
CDI_POST_DOMINATORS
};
-extern void calculate_dominance_info PARAMS ((int *, sbitmap *,
- enum cdi_direction));
-
+extern dominance_info calculate_dominance_info PARAMS ((enum cdi_direction));
+extern void free_dominance_info PARAMS ((dominance_info));
+extern basic_block nearest_common_dominator PARAMS ((dominance_info,
+ basic_block, basic_block));
+extern void set_immediate_dominator PARAMS ((dominance_info,
+ basic_block, basic_block));
+extern basic_block get_immediate_dominator PARAMS ((dominance_info,
+ basic_block));
+extern bool dominated_by_p PARAMS ((dominance_info, basic_block, basic_block));
+extern int get_dominated_by PARAMS ((dominance_info, basic_block, basic_block **));
+extern void add_to_dominance_info PARAMS ((dominance_info, basic_block));
+extern void delete_from_dominance_info PARAMS ((dominance_info, basic_block));
+basic_block recount_dominator PARAMS ((dominance_info, basic_block));
+extern void redirect_immediate_dominators PARAMS ((dominance_info, basic_block,
+ basic_block));
+void iterate_fix_dominators PARAMS ((dominance_info, basic_block *, int));
+extern void verify_dominators PARAMS ((dominance_info));
#endif /* GCC_BASIC_BLOCK_H */
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