/* Define control and data flow tables, and regsets.
Copyright (C) 1987, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
- 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+ 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
This file is part of GCC.
#include "bitmap.h"
#include "sbitmap.h"
-#include "varray.h"
#include "partition.h"
#include "hard-reg-set.h"
#include "predict.h"
#define EXECUTE_IF_AND_IN_REG_SET(REGSET1, REGSET2, MIN, REGNUM, RSI) \
EXECUTE_IF_AND_IN_BITMAP (REGSET1, REGSET2, MIN, REGNUM, RSI) \
+/* Same information as REGS_INVALIDATED_BY_CALL but in regset form to be used
+ in dataflow more conveniently. */
+
+extern regset regs_invalidated_by_call_regset;
+
/* Type we use to hold basic block counters. Should be at least
64bit. Although a counter cannot be negative, we use a signed
type, because erroneous negative counts can be generated when the
typedef HOST_WIDEST_INT gcov_type;
/* Control flow edge information. */
-struct edge_def GTY(())
-{
+struct GTY(()) edge_def {
/* The two blocks at the ends of the edge. */
struct basic_block_def *src;
struct basic_block_def *dest;
/* Auxiliary info specific to a pass. */
PTR GTY ((skip (""))) aux;
- /* Location of any goto implicit in the edge, during tree-ssa. */
+ /* Location of any goto implicit in the edge and associated BLOCK. */
+ tree goto_block;
location_t goto_locus;
/* The index number corresponding to this edge in the edge vector
in profile.c */
};
-typedef struct edge_def *edge;
-typedef const struct edge_def *const_edge;
DEF_VEC_P(edge);
DEF_VEC_ALLOC_P(edge,gc);
DEF_VEC_ALLOC_P(edge,heap);
basic blocks. */
/* Basic block information indexed by block number. */
-struct basic_block_def GTY((chain_next ("%h.next_bb"), chain_prev ("%h.prev_bb")))
-{
+struct GTY((chain_next ("%h.next_bb"), chain_prev ("%h.prev_bb"))) basic_block_def {
/* The edges into and out of the block. */
VEC(edge,gc) *preds;
VEC(edge,gc) *succs;
/* Expected frequency. Normalized to be in range 0 to BB_FREQ_MAX. */
int frequency;
+ /* The discriminator for this block. */
+ int discriminator;
+
/* Various flags. See BB_* below. */
int flags;
};
-struct rtl_bb_info GTY(())
-{
+struct GTY(()) rtl_bb_info {
/* The first and last insns of the block. */
rtx head_;
rtx end_;
int visited;
};
-struct gimple_bb_info GTY(())
-{
+struct GTY(()) gimple_bb_info {
/* Sequence of statements in this block. */
gimple_seq seq;
gimple_seq phi_nodes;
};
-typedef struct basic_block_def *basic_block;
-typedef const struct basic_block_def *const_basic_block;
-
DEF_VEC_P(basic_block);
DEF_VEC_ALLOC_P(basic_block,gc);
DEF_VEC_ALLOC_P(basic_block,heap);
DOM_OK /* Everything is ok. */
};
+/* What sort of profiling information we have. */
+enum profile_status_d
+{
+ PROFILE_ABSENT,
+ PROFILE_GUESSED,
+ PROFILE_READ
+};
+
/* A structure to group all the per-function control flow graph data.
The x_* prefixing is necessary because otherwise references to the
fields of this struct are interpreted as the defines for backward
source compatibility following the definition of this struct. */
-struct control_flow_graph GTY(())
-{
+struct GTY(()) control_flow_graph {
/* Block pointers for the exit and entry of a function.
These are always the head and tail of the basic block list. */
basic_block x_entry_block_ptr;
only used for the gimple CFG. */
VEC(basic_block,gc) *x_label_to_block_map;
- enum profile_status {
- PROFILE_ABSENT,
- PROFILE_GUESSED,
- PROFILE_READ
- } x_profile_status;
+ enum profile_status_d x_profile_status;
/* Whether the dominators and the postdominators are available. */
enum dom_state x_dom_computed[2];
for ((INSN) = BB_HEAD (BB), (CURR) = (INSN) ? NEXT_INSN ((INSN)): NULL; \
(INSN) && (INSN) != NEXT_INSN (BB_END (BB)); \
(INSN) = (CURR), (CURR) = (INSN) ? NEXT_INSN ((INSN)) : NULL)
-
+
#define FOR_BB_INSNS_REVERSE(BB, INSN) \
for ((INSN) = BB_END (BB); \
(INSN) && (INSN) != PREV_INSN (BB_HEAD (BB)); \
#define BB_HEAD(B) (B)->il.rtl->head_
#define BB_END(B) (B)->il.rtl->end_
-/* Special block numbers [markers] for entry and exit. */
+/* Special block numbers [markers] for entry and exit.
+ Neither of them is supposed to hold actual statements. */
#define ENTRY_BLOCK (0)
#define EXIT_BLOCK (1)
/* The two blocks that are always in the cfg. */
#define NUM_FIXED_BLOCKS (2)
-
-#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 (void);
extern void insert_insn_on_edge (rtx, edge);
basic_block split_edge_and_insert (edge, rtx);
+extern void commit_one_edge_insertion (edge e);
extern void commit_edge_insertions (void);
extern void remove_fake_edges (void);
/* In predict.c */
extern bool maybe_hot_bb_p (const_basic_block);
extern bool maybe_hot_edge_p (edge);
-extern bool probably_cold_bb_p (const_basic_block);
extern bool probably_never_executed_bb_p (const_basic_block);
extern bool optimize_bb_for_size_p (const_basic_block);
extern bool optimize_bb_for_speed_p (const_basic_block);
extern bool predictable_edge_p (edge);
/* In cfg.c */
-extern void dump_regset (regset, FILE *);
-extern void debug_regset (regset);
extern void init_flow (struct function *);
extern void debug_bb (basic_block);
extern basic_block debug_bb_n (int);
/* In cfgbuild.c. */
extern void find_many_sub_basic_blocks (sbitmap);
extern void rtl_make_eh_edge (sbitmap, basic_block, rtx);
-extern void find_basic_blocks (rtx);
/* In cfgcleanup.c. */
extern bool cleanup_cfg (int);
+extern int flow_find_cross_jump (basic_block, basic_block, rtx *, rtx *);
+extern int flow_find_head_matching_sequence (basic_block, basic_block,
+ rtx *, rtx *, int);
+
extern bool delete_unreachable_blocks (void);
extern bool mark_dfs_back_edges (void);
extern VEC (basic_block, heap) *get_dominated_by_region (enum cdi_direction,
basic_block *,
unsigned);
+extern VEC (basic_block, heap) *get_all_dominated_blocks (enum cdi_direction,
+ basic_block);
extern void add_to_dominance_info (enum cdi_direction, basic_block);
extern void delete_from_dominance_info (enum cdi_direction, basic_block);
basic_block recompute_dominator (enum cdi_direction, basic_block);
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