/* Define control and data flow tables, and regsets.
- Copyright (C) 1987, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1997, 1998, 1999, 2000, 2001
+ Free Software Foundation, Inc.
This file is part of GCC.
#include "varray.h"
#include "partition.h"
-#ifndef TREE_CODE
-union tree_node;
-#define tree union tree_node *
-#endif
-
/* Head of register set linked list. */
typedef bitmap_head regset_head;
/* A pointer to a regset_head. */
} while (0)
/* Loop over all registers in REGSET, starting with MIN, setting REGNUM to the
- register number and executing CODE for all registers that are set. */
+ register number and executing CODE for all registers that are set. */
#define EXECUTE_IF_SET_IN_REG_SET(REGSET, MIN, REGNUM, CODE) \
EXECUTE_IF_SET_IN_BITMAP (REGSET, MIN, REGNUM, CODE)
/* Loop over all registers in REGSET1 and REGSET2, starting with MIN, setting
REGNUM to the register number and executing CODE for all registers that are
- set in the first regset and not set in the second. */
+ set in the first regset and not set in the second. */
#define EXECUTE_IF_AND_COMPL_IN_REG_SET(REGSET1, REGSET2, MIN, REGNUM, CODE) \
EXECUTE_IF_AND_COMPL_IN_BITMAP (REGSET1, REGSET2, MIN, REGNUM, CODE)
/* Loop over all registers in REGSET1 and REGSET2, starting with MIN, setting
REGNUM to the register number and executing CODE for all registers that are
- set in both regsets. */
+ set in both regsets. */
#define EXECUTE_IF_AND_IN_REG_SET(REGSET1, REGSET2, MIN, REGNUM, CODE) \
EXECUTE_IF_AND_IN_BITMAP (REGSET1, REGSET2, MIN, REGNUM, CODE)
} *edge;
#define EDGE_FALLTHRU 1
-#define EDGE_CRITICAL 2
-#define EDGE_ABNORMAL 4
-#define EDGE_ABNORMAL_CALL 8
-#define EDGE_EH 16
-#define EDGE_FAKE 32
-#define EDGE_DFS_BACK 64
+#define EDGE_ABNORMAL 2
+#define EDGE_ABNORMAL_CALL 4
+#define EDGE_EH 8
+#define EDGE_FAKE 16
+#define EDGE_DFS_BACK 32
#define EDGE_COMPLEX (EDGE_ABNORMAL | EDGE_ABNORMAL_CALL | EDGE_EH)
#define BB_FREQ_MAX 10000
/* Masks for basic_block.flags. */
-#define BB_REACHABLE 1
+#define BB_DIRTY 1
+#define BB_NEW 2
+#define BB_REACHABLE 4
/* Number of basic blocks in the current function. */
extern regset regs_live_at_setjmp;
+/* Special labels found during CFG build. */
+
+extern rtx label_value_list, tail_recursion_label_list;
+
+extern struct obstack flow_obstack;
+
/* Indexed by n, gives number of basic block that (REG n) is used in.
If the value is REG_BLOCK_GLOBAL (-2),
it means (REG n) is used in more than one basic block.
#define ENTRY_BLOCK (-1)
#define EXIT_BLOCK (-2)
-/* Special block number not valid for any block. */
+/* Special block number not valid for any block. */
#define INVALID_BLOCK (-3)
/* Similarly, block pointers for the edge list. */
#define BLOCK_NUM(INSN) (BLOCK_FOR_INSN (INSN)->index + 0)
extern void compute_bb_for_insn PARAMS ((int));
+extern void free_bb_for_insn PARAMS ((void));
extern void update_bb_for_insn PARAMS ((basic_block));
extern void set_block_for_insn PARAMS ((rtx, basic_block));
-extern void set_block_for_new_insns PARAMS ((rtx, basic_block));
extern void free_basic_block_vars PARAMS ((int));
extern edge split_block PARAMS ((basic_block, rtx));
extern basic_block split_edge PARAMS ((edge));
extern void insert_insn_on_edge PARAMS ((rtx, edge));
+
extern void commit_edge_insertions PARAMS ((void));
+extern void commit_edge_insertions_watch_calls PARAMS ((void));
+
extern void remove_fake_edges PARAMS ((void));
extern void add_noreturn_fake_exit_edges PARAMS ((void));
extern void connect_infinite_loops_to_exit PARAMS ((void));
extern int flow_call_edges_add PARAMS ((sbitmap));
-extern rtx flow_delete_insn PARAMS ((rtx));
-extern void flow_delete_insn_chain PARAMS ((rtx, rtx));
-extern void make_edge PARAMS ((sbitmap *, basic_block,
+extern edge cached_make_edge PARAMS ((sbitmap *, basic_block,
+ basic_block, int));
+extern edge make_edge PARAMS ((basic_block,
+ basic_block, int));
+extern edge make_single_succ_edge PARAMS ((basic_block,
basic_block, int));
extern void remove_edge PARAMS ((edge));
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 void create_basic_block PARAMS ((int, rtx, rtx, rtx));
+extern basic_block create_basic_block_structure PARAMS ((int, rtx, rtx, rtx));
+extern basic_block create_basic_block PARAMS ((int, rtx, rtx));
extern int flow_delete_block PARAMS ((basic_block));
+extern void clear_bb_flags PARAMS ((void));
extern void merge_blocks_nomove PARAMS ((basic_block, basic_block));
extern void tidy_fallthru_edge PARAMS ((edge, basic_block,
basic_block));
+extern void tidy_fallthru_edges PARAMS ((void));
+extern void flow_reverse_top_sort_order_compute PARAMS ((int *));
extern int flow_depth_first_order_compute PARAMS ((int *, int *));
+extern void flow_preorder_transversal_compute PARAMS ((int *));
extern void dump_edge_info PARAMS ((FILE *, edge, int));
extern void clear_edges PARAMS ((void));
extern void mark_critical_edges PARAMS ((void));
+ REG_BR_PROB_BASE / 2) \
/ REG_BR_PROB_BASE)
+/* Return nonzero if edge is critical. */
+#define EDGE_CRITICAL_P(e) ((e)->src->succ->succ_next \
+ && (e)->dest->pred->pred_next)
+
struct edge_list * create_edge_list PARAMS ((void));
void free_edge_list PARAMS ((struct edge_list *));
void print_edge_list PARAMS ((FILE *, struct edge_list *));
#define PROP_ALLOW_CFG_CHANGES 32 /* Allow the CFG to be changed
by dead code removal. */
#define PROP_AUTOINC 64 /* Create autoinc mem references. */
+#define PROP_EQUAL_NOTES 128 /* Take into account REG_EQUAL notes. */
#define PROP_FINAL 127 /* All of the above. */
#define CLEANUP_EXPENSIVE 1 /* Do relativly expensive optimizations
inside call_placeholders.. */
#define CLEANUP_PRE_LOOP 16 /* Take care to preserve syntactic loop
notes. */
+#define CLEANUP_UPDATE_LIFE 32 /* Keep life information up to date. */
+#define CLEANUP_THREADING 64 /* Do jump threading. */
/* Flags for loop discovery. */
#define LOOP_TREE 1 /* Build loop hierarchy tree. */
#define LOOP_ALL 31 /* All of the above */
extern void life_analysis PARAMS ((rtx, FILE *, int));
-extern void update_life_info PARAMS ((sbitmap, enum update_life_extent,
+extern int update_life_info PARAMS ((sbitmap, enum update_life_extent,
int));
+extern int update_life_info_in_dirty_blocks PARAMS ((enum update_life_extent,
+ int));
extern int count_or_remove_death_notes PARAMS ((sbitmap, int));
extern int propagate_block PARAMS ((basic_block, regset, regset, regset,
int));
extern void debug_regset PARAMS ((regset));
extern void allocate_reg_life_data PARAMS ((void));
extern void allocate_bb_life_data PARAMS ((void));
-extern void find_unreachable_blocks PARAMS ((void));
extern void expunge_block PARAMS ((basic_block));
-extern void delete_noop_moves PARAMS ((rtx));
-extern rtx last_loop_beg_note PARAMS ((rtx));
+extern basic_block alloc_block PARAMS ((void));
+extern void find_unreachable_blocks PARAMS ((void));
+extern int delete_noop_moves PARAMS ((rtx));
extern basic_block redirect_edge_and_branch_force PARAMS ((edge, basic_block));
+extern basic_block force_nonfallthru PARAMS ((edge));
extern bool redirect_edge_and_branch PARAMS ((edge, basic_block));
extern rtx block_label PARAMS ((basic_block));
extern bool forwarder_block_p PARAMS ((basic_block));
-extern bool purge_all_dead_edges PARAMS ((void));
+extern bool purge_all_dead_edges PARAMS ((int));
extern bool purge_dead_edges PARAMS ((basic_block));
extern void find_sub_basic_blocks PARAMS ((basic_block));
-
+extern void find_many_sub_basic_blocks PARAMS ((sbitmap));
+extern bool can_fallthru PARAMS ((basic_block, basic_block));
+extern void flow_nodes_print PARAMS ((const char *, const sbitmap,
+ FILE *));
+extern void flow_edge_list_print PARAMS ((const char *, const edge *,
+ int, FILE *));
+extern void alloc_aux_for_block PARAMS ((basic_block, int));
+extern void alloc_aux_for_blocks PARAMS ((int));
+extern void clear_aux_for_blocks PARAMS ((void));
+extern void free_aux_for_blocks PARAMS ((void));
+extern void alloc_aux_for_edge PARAMS ((edge, int));
+extern void alloc_aux_for_edges PARAMS ((int));
+extern void clear_aux_for_edges PARAMS ((void));
+extern void free_aux_for_edges PARAMS ((void));
/* This function is always defined so it can be called from the
debugger, and it is declared extern so we don't get warnings about
- it being unused. */
+ it being unused. */
extern void verify_flow_info PARAMS ((void));
extern int flow_loop_outside_edge_p PARAMS ((const struct loop *, edge));
PARAMS ((regset,
partition));
extern bool mark_dfs_back_edges PARAMS ((void));
+extern void update_br_prob_note PARAMS ((basic_block));
+extern void fixup_abnormal_edges PARAMS ((void));
/* In dominance.c */
OSDN Git Service
