/* Data and Control Flow Analysis for Trees.
- Copyright (C) 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
Contributed by Diego Novillo <dnovillo@redhat.com>
This file is part of GCC.
struct basic_block_def;
typedef struct basic_block_def *basic_block;
#endif
+struct static_var_ann_d;
-/* True if the code is in ssa form. */
-extern bool in_ssa_p;
+/* Memory reference statistics for individual memory symbols,
+ collected during alias analysis. */
+struct mem_sym_stats_d GTY(())
+{
+ /* Memory symbol. */
+ tree var;
+
+ /* Nonzero if this entry has been assigned a partition. */
+ unsigned int partitioned_p : 1;
+
+ /* Nonzero if VAR is a memory partition tag that already contains
+ call-clobbered variables in its partition set. */
+ unsigned int has_call_clobbered_vars : 1;
+
+ /* Number of direct reference sites. A direct reference to VAR is any
+ reference of the form 'VAR = ' or ' = VAR'. For GIMPLE reg
+ pointers, this is the number of sites where the pointer is
+ dereferenced. */
+ long num_direct_writes;
+ long num_direct_reads;
+
+ /* Number of indirect reference sites. An indirect reference to VAR
+ is any reference via a pointer that contains VAR in its points-to
+ set or, in the case of call-clobbered symbols, a function call. */
+ long num_indirect_writes;
+ long num_indirect_reads;
+
+ /* Execution frequency. This is the sum of the execution
+ frequencies of all the statements that reference this object
+ weighted by the number of references in each statement. This is
+ the main key used to sort the list of symbols to partition.
+ Symbols with high execution frequencies are put at the bottom of
+ the work list (ie, they are partitioned last).
+ Execution frequencies are taken directly from each basic block,
+ so compiling with PGO enabled will increase the precision of this
+ estimate. */
+ long frequency_reads;
+ long frequency_writes;
+
+ /* Set of memory tags that contain VAR in their alias set. */
+ bitmap parent_tags;
+};
+
+typedef struct mem_sym_stats_d *mem_sym_stats_t;
+DEF_VEC_P(mem_sym_stats_t);
+DEF_VEC_ALLOC_P(mem_sym_stats_t, heap);
+
+/* Memory reference statistics collected during alias analysis. */
+struct mem_ref_stats_d GTY(())
+{
+ /* Number of statements that make memory references. */
+ long num_mem_stmts;
+
+ /* Number of statements that make function calls. */
+ long num_call_sites;
+
+ /* Number of statements that make calls to pure/const functions. */
+ long num_pure_const_call_sites;
+
+ /* Number of ASM statements. */
+ long num_asm_sites;
+
+ /* Estimated number of virtual operands needed as computed by
+ compute_memory_partitions. */
+ long num_vuses;
+ long num_vdefs;
+
+ /* This maps every symbol used to make "memory" references
+ (pointers, arrays, structures, etc) to an instance of struct
+ mem_sym_stats_d describing reference statistics for the symbol. */
+ struct pointer_map_t * GTY((skip)) mem_sym_stats;
+};
+
+
+/* Gimple dataflow datastructure. All publicly available fields shall have
+ gimple_ accessor defined in tree-flow-inline.h, all publicly modifiable
+ fields should have gimple_set accessor. */
+struct gimple_df GTY(())
+{
+ /* Array of all variables referenced in the function. */
+ htab_t GTY((param_is (struct int_tree_map))) referenced_vars;
+
+ /* A list of all the noreturn calls passed to modify_stmt.
+ cleanup_control_flow uses it to detect cases where a mid-block
+ indirect call has been turned into a noreturn call. When this
+ happens, all the instructions after the call are no longer
+ reachable and must be deleted as dead. */
+ VEC(tree,gc) *modified_noreturn_calls;
+
+ /* Array of all SSA_NAMEs used in the function. */
+ VEC(tree,gc) *ssa_names;
+
+ /* Artificial variable used to model the effects of function calls. */
+ tree global_var;
+
+ /* Artificial variable used to model the effects of nonlocal
+ variables. */
+ tree nonlocal_all;
+
+ /* Call clobbered variables in the function. If bit I is set, then
+ REFERENCED_VARS (I) is call-clobbered. */
+ bitmap call_clobbered_vars;
+
+ /* Addressable variables in the function. If bit I is set, then
+ REFERENCED_VARS (I) has had its address taken. Note that
+ CALL_CLOBBERED_VARS and ADDRESSABLE_VARS are not related. An
+ addressable variable is not necessarily call-clobbered (e.g., a
+ local addressable whose address does not escape) and not all
+ call-clobbered variables are addressable (e.g., a local static
+ variable). */
+ bitmap addressable_vars;
+
+ /* Free list of SSA_NAMEs. */
+ tree free_ssanames;
+
+ /* Hashtable holding definition for symbol. If this field is not NULL, it
+ means that the first reference to this variable in the function is a
+ USE or a VUSE. In those cases, the SSA renamer creates an SSA name
+ for this variable with an empty defining statement. */
+ htab_t GTY((param_is (struct int_tree_map))) default_defs;
+
+ /* 'true' after aliases have been computed (see compute_may_aliases). */
+ unsigned int aliases_computed_p : 1;
+
+ /* True if the code is in ssa form. */
+ unsigned int in_ssa_p : 1;
+
+ struct ssa_operands ssa_operands;
+
+ /* Hashtable of variables annotations. Used for static variables only;
+ local variables have direct pointer in the tree node. */
+ htab_t GTY((param_is (struct static_var_ann_d))) var_anns;
+
+ /* Memory reference statistics collected during alias analysis.
+ This information is used to drive the memory partitioning
+ heuristics in compute_memory_partitions. */
+ struct mem_ref_stats_d mem_ref_stats;
+};
+
+/* Accessors for internal use only. Generic code should use abstraction
+ provided by tree-flow-inline.h or specific modules. */
+#define FREE_SSANAMES(fun) (fun)->gimple_df->free_ssanames
+#define SSANAMES(fun) (fun)->gimple_df->ssa_names
+#define MODIFIED_NORETURN_CALLS(fun) (fun)->gimple_df->modified_noreturn_calls
+#define DEFAULT_DEFS(fun) (fun)->gimple_df->default_defs
typedef struct
{
/*---------------------------------------------------------------------------
- Tree annotations stored in tree_common.ann
+ Tree annotations stored in tree_base.ann
---------------------------------------------------------------------------*/
enum tree_ann_type { TREE_ANN_COMMON, VAR_ANN, FUNCTION_ANN, STMT_ANN };
NEED_PHI_STATE_MAYBE
};
+
+/* The "no alias" attribute allows alias analysis to make more
+ aggressive assumptions when assigning alias sets, computing
+ points-to information and memory partitions. These attributes
+ are the result of user annotations or flags (e.g.,
+ -fargument-noalias). */
+enum noalias_state {
+ /* Default state. No special assumptions can be made about this
+ symbol. */
+ MAY_ALIAS = 0,
+
+ /* The symbol does not alias with other symbols that have a
+ NO_ALIAS* attribute. */
+ NO_ALIAS,
+
+ /* The symbol does not alias with other symbols that have a
+ NO_ALIAS*, and it may not alias with global symbols. */
+ NO_ALIAS_GLOBAL,
+
+ /* The symbol does not alias with any other symbols. */
+ NO_ALIAS_ANYTHING
+};
+
+
struct subvar;
typedef struct subvar *subvar_t;
been seen yet or not. */
unsigned out_of_ssa_tag : 1;
- /* Used when building root_var structures in tree_ssa_live.[ch]. */
- unsigned root_var_processed : 1;
-
- /* Nonzero if this variable is in the alias set of another variable. */
- unsigned is_aliased : 1;
+ /* Used when building base variable structures in a var_map. */
+ unsigned base_var_processed : 1;
/* Nonzero if this variable was used after SSA optimizations were
applied. We set this when translating out of SSA form. */
ENUM_BITFIELD (need_phi_state) need_phi_state : 2;
/* Used during operand processing to determine if this variable is already
- in the vuse list. */
+ in the VUSE list. */
unsigned in_vuse_list : 1;
/* Used during operand processing to determine if this variable is already
- in the v_may_def list. */
- unsigned in_v_may_def_list : 1;
-
- /* An artificial variable representing the memory location pointed-to by
- all the pointer symbols that flow-insensitive alias analysis
- (mostly type-based) considers to be aliased. If the variable is
- not a pointer or if it is never dereferenced, this must be NULL. */
+ in the VDEF list. */
+ unsigned in_vdef_list : 1;
+
+ /* True for HEAP artificial variables. These variables represent
+ the memory area allocated by a call to malloc. */
+ unsigned is_heapvar : 1;
+
+ /* True if the variable is call clobbered. */
+ unsigned int call_clobbered : 1;
+
+ /* This field describes several "no alias" attributes that some
+ symbols are known to have. See the enum's definition for more
+ information on each attribute. */
+ ENUM_BITFIELD (noalias_state) noalias_state : 2;
+
+ /* Memory partition tag assigned to this symbol. */
+ tree mpt;
+
+ /* If this variable is a pointer P that has been dereferenced, this
+ field is an artificial variable that represents the memory
+ location *P. Every other pointer Q that is type-compatible with
+ P will also have the same memory tag. If the variable is not a
+ pointer or if it is never dereferenced, this must be NULL.
+ FIXME, do we really need this here? How much slower would it be
+ to convert to hash table? */
tree symbol_mem_tag;
- /* Variables that may alias this variable. */
- VEC(tree, gc) *may_aliases;
-
/* Used when going out of SSA form to indicate which partition this
variable represents storage for. */
unsigned partition;
- /* Used by the root-var object in tree-ssa-live.[ch]. */
- unsigned root_index;
+ /* Used by var_map for the base index of ssa base variables. */
+ unsigned base_index;
/* During into-ssa and the dominator optimizer, this field holds the
current version of this variable (an SSA_NAME). */
tree current_def;
-
+
/* If this variable is a structure, this fields holds a list of
symbols representing each of the fields of the structure. */
subvar_t subvars;
unsigned int escape_mask;
};
+/* Container for variable annotation used by hashtable for annotations for
+ static variables. */
+struct static_var_ann_d GTY(())
+{
+ struct var_ann_d ann;
+ unsigned int uid;
+};
+
struct function_ann_d GTY(())
{
struct tree_ann_common_d common;
{
struct tree_ann_common_d common;
- /* Nonzero if the statement has been modified (meaning that the operands
- need to be scanned again). */
- unsigned modified : 1;
-
- /* Nonzero if the statement makes references to volatile storage. */
- unsigned has_volatile_ops : 1;
-
- /* Nonzero if the statement makes a function call that may clobber global
- and local addressable variables. */
- unsigned makes_clobbering_call : 1;
-
/* Basic block that contains this statement. */
basic_block bb;
pass which needs statement UIDs. */
unsigned int uid;
- /* Linked list of histograms for value-based profiling. This is really a
- struct histogram_value*. We use void* to avoid having to export that
- everywhere, and to avoid having to put it in GC memory. */
-
- void * GTY ((skip (""))) histograms;
+ /* Nonzero if the statement references memory (at least one of its
+ expressions contains a non-register operand). */
+ unsigned references_memory : 1;
+
+ /* Nonzero if the statement has been modified (meaning that the operands
+ need to be scanned again). */
+ unsigned modified : 1;
+
+ /* Nonzero if the statement makes references to volatile storage. */
+ unsigned has_volatile_ops : 1;
+
+ /* Nonzero if the statement makes a function call that may clobber global
+ and local addressable variables. */
+ unsigned makes_clobbering_call : 1;
};
union tree_ann_d GTY((desc ("ann_type ((tree_ann_t)&%h)")))
struct stmt_ann_d GTY((tag ("STMT_ANN"))) stmt;
};
-extern GTY(()) VEC(tree,gc) *modified_noreturn_calls;
-
typedef union tree_ann_d *tree_ann_t;
typedef struct var_ann_d *var_ann_t;
typedef struct function_ann_d *function_ann_t;
typedef struct stmt_ann_d *stmt_ann_t;
+typedef struct tree_ann_common_d *tree_ann_common_t;
-static inline tree_ann_t tree_ann (tree);
-static inline tree_ann_t get_tree_ann (tree);
+static inline tree_ann_common_t tree_common_ann (tree);
+static inline tree_ann_common_t get_tree_common_ann (tree);
static inline var_ann_t var_ann (tree);
static inline var_ann_t get_var_ann (tree);
static inline function_ann_t function_ann (tree);
static inline function_ann_t get_function_ann (tree);
static inline stmt_ann_t stmt_ann (tree);
+static inline bool has_stmt_ann (tree);
static inline stmt_ann_t get_stmt_ann (tree);
static inline enum tree_ann_type ann_type (tree_ann_t);
static inline basic_block bb_for_stmt (tree);
static inline bool noreturn_call_p (tree);
static inline void update_stmt (tree);
static inline bool stmt_modified_p (tree);
-static inline VEC(tree, gc) *may_aliases (tree);
+static inline bitmap may_aliases (tree);
static inline int get_lineno (tree);
static inline const char *get_filename (tree);
static inline bool is_exec_stmt (tree);
VEC_iterate (tree, (VEC), (ITER).i, (VAR)); \
(ITER).i++)
-/* Array of all variables referenced in the function. */
-extern GTY((param_is (struct int_tree_map))) htab_t referenced_vars;
-
-/* Default defs for undefined symbols. */
-extern GTY((param_is (struct int_tree_map))) htab_t default_defs;
-
extern tree referenced_var_lookup (unsigned int);
-#define num_referenced_vars htab_elements (referenced_vars)
+extern bool referenced_var_check_and_insert (tree);
+#define num_referenced_vars htab_elements (gimple_referenced_vars (cfun))
#define referenced_var(i) referenced_var_lookup (i)
-/* Array of all SSA_NAMEs used in the function. */
-extern GTY(()) VEC(tree,gc) *ssa_names;
-
-#define num_ssa_names (VEC_length (tree, ssa_names))
-#define ssa_name(i) (VEC_index (tree, ssa_names, (i)))
-
-/* Artificial variable used to model the effects of function calls. */
-extern GTY(()) tree global_var;
-
-/* Call clobbered variables in the function. If bit I is set, then
- REFERENCED_VARS (I) is call-clobbered. */
-extern bitmap call_clobbered_vars;
-
-/* Addressable variables in the function. If bit I is set, then
- REFERENCED_VARS (I) has had its address taken. */
-extern bitmap addressable_vars;
-
-/* 'true' after aliases have been computed (see compute_may_aliases). */
-extern bool aliases_computed_p;
+#define num_ssa_names (VEC_length (tree, cfun->gimple_df->ssa_names))
+#define ssa_name(i) (VEC_index (tree, cfun->gimple_df->ssa_names, (i)))
/* Macros for showing usage statistics. */
#define SCALE(x) ((unsigned long) ((x) < 1024*10 \
#define PENDING_STMT(e) ((e)->insns.t)
extern void delete_tree_cfg_annotations (void);
-extern void disband_implicit_edges (void);
extern bool stmt_ends_bb_p (tree);
extern bool is_ctrl_stmt (tree);
extern bool is_ctrl_altering_stmt (tree);
extern bool computed_goto_p (tree);
extern bool simple_goto_p (tree);
+extern bool tree_can_make_abnormal_goto (tree);
extern basic_block single_noncomplex_succ (basic_block bb);
extern void tree_dump_bb (basic_block, FILE *, int);
extern void debug_tree_bb (basic_block);
extern void group_case_labels (void);
extern tree first_stmt (basic_block);
extern tree last_stmt (basic_block);
-extern tree *last_stmt_ptr (basic_block);
extern tree last_and_only_stmt (basic_block);
extern edge find_taken_edge (basic_block, tree);
extern basic_block label_to_block_fn (struct function *, tree);
basic_block *);
extern void add_phi_args_after_copy_bb (basic_block);
extern void add_phi_args_after_copy (basic_block *, unsigned);
+extern bool tree_purge_dead_abnormal_call_edges (basic_block);
extern bool tree_purge_dead_eh_edges (basic_block);
extern bool tree_purge_all_dead_eh_edges (bitmap);
extern tree gimplify_val (block_stmt_iterator *, tree, tree);
tree, tree, tree, tree);
extern void init_empty_tree_cfg (void);
extern void fold_cond_expr_cond (void);
+extern void make_abnormal_goto_edges (basic_block, bool);
extern void replace_uses_by (tree, tree);
extern void start_recording_case_labels (void);
extern void end_recording_case_labels (void);
extern basic_block move_sese_region_to_fn (struct function *, basic_block,
basic_block);
+void remove_edge_and_dominated_blocks (edge);
/* In tree-cfgcleanup.c */
+extern bitmap cfgcleanup_altered_bbs;
extern bool cleanup_tree_cfg (void);
-extern void cleanup_tree_cfg_loop (void);
+extern bool cleanup_tree_cfg_loop (void);
/* In tree-pretty-print.c. */
extern void dump_generic_bb (FILE *, basic_block, int, int);
extern var_ann_t create_var_ann (tree);
extern function_ann_t create_function_ann (tree);
extern stmt_ann_t create_stmt_ann (tree);
-extern tree_ann_t create_tree_ann (tree);
+extern tree_ann_common_t create_tree_common_ann (tree);
extern void dump_dfa_stats (FILE *);
extern void debug_dfa_stats (void);
extern void debug_referenced_vars (void);
extern void debug_subvars_for (tree);
extern tree get_virtual_var (tree);
extern void add_referenced_var (tree);
-extern void mark_new_vars_to_rename (tree);
+extern void remove_referenced_var (tree);
+extern void mark_symbols_for_renaming (tree);
extern void find_new_referenced_vars (tree *);
-
extern tree make_rename_temp (tree, const char *);
extern void set_default_def (tree, tree);
-extern tree default_def (tree);
-extern tree default_def_fn (struct function *, tree);
+extern tree gimple_default_def (struct function *, tree);
+extern struct mem_sym_stats_d *mem_sym_stats (struct function *, tree);
/* In tree-phinodes.c */
extern void reserve_phi_args_for_new_edge (basic_block);
extern tree create_phi_node (tree, basic_block);
extern void add_phi_arg (tree, tree, edge);
extern void remove_phi_args (edge);
-extern void remove_phi_node (tree, tree);
+extern void remove_phi_node (tree, tree, bool);
extern tree phi_reverse (tree);
/* In gimple-low.c */
extern bool may_be_aliased (tree);
extern bool is_aliased_with (tree, tree);
extern struct ptr_info_def *get_ptr_info (tree);
-extern void new_type_alias (tree, tree);
-extern void count_uses_and_derefs (tree, tree, unsigned *, unsigned *, bool *);
+extern void new_type_alias (tree, tree, tree);
+extern void count_uses_and_derefs (tree, tree, unsigned *, unsigned *,
+ unsigned *);
static inline subvar_t get_subvars_for_var (tree);
static inline tree get_subvar_at (tree, unsigned HOST_WIDE_INT);
static inline bool ref_contains_array_ref (tree);
static inline bool overlap_subvar (unsigned HOST_WIDE_INT,
unsigned HOST_WIDE_INT,
tree, bool *);
+extern tree create_tag_raw (enum tree_code, tree, const char *);
+extern void delete_mem_ref_stats (struct function *);
+extern void dump_mem_ref_stats (FILE *);
+extern void debug_mem_ref_stats (void);
+extern void debug_memory_partitions (void);
+extern void debug_mem_sym_stats (tree var);
+extern void debug_all_mem_sym_stats (void);
/* Call-back function for walk_use_def_chains(). At each reaching
definition, a function with this prototype is called. */
extern bool tree_ssa_useless_type_conversion_1 (tree, tree);
extern void verify_ssa (bool);
extern void delete_tree_ssa (void);
-extern void register_new_def (tree, VEC(tree,heap) **);
extern void walk_use_def_chains (tree, walk_use_def_chains_fn, void *, bool);
extern bool stmt_references_memory_p (tree);
void register_new_name_mapping (tree, tree);
tree create_new_def_for (tree, tree, def_operand_p);
bool need_ssa_update_p (void);
+bool name_mappings_registered_p (void);
bool name_registered_for_update_p (tree);
bitmap ssa_names_to_replace (void);
-void release_ssa_name_after_update_ssa (tree name);
+void release_ssa_name_after_update_ssa (tree);
void compute_global_livein (bitmap, bitmap);
tree duplicate_ssa_name (tree, tree);
void mark_sym_for_renaming (tree);
tree widen_bitfield (tree, tree, tree);
/* In tree-vrp.c */
-tree vrp_evaluate_conditional (tree, bool);
+tree vrp_evaluate_conditional (tree, tree);
void simplify_stmt_using_ranges (tree);
/* In tree-ssa-dom.c */
a loop (provided that assumptions == true and
may_be_zero == false), more precisely the number
of executions of the latch of the loop. */
- tree additional_info; /* The boolean expression. Sometimes we use additional
- knowledge to simplify the other expressions
- contained in this structure (for example the
- knowledge about value ranges of operands on entry to
- the loop). If this is a case, conjunction of such
- condition is stored in this field, so that we do not
- lose the information: for example if may_be_zero
- is (n <= 0) and niter is (unsigned) n, we know
- that the number of iterations is at most
- MAX_SIGNED_INT. However if the (n <= 0) assumption
- is eliminated (by looking at the guard on entry of
- the loop), then the information would be lost. */
+ double_int max; /* The upper bound on the number of iterations of
+ the loop. */
/* The simplified shape of the exit condition. The loop exits if
CONTROL CMP BOUND is false, where CMP is one of NE_EXPR,
};
/* In tree-vectorizer.c */
-void vectorize_loops (struct loops *);
+unsigned vectorize_loops (void);
+extern bool vect_can_force_dr_alignment_p (tree, unsigned int);
+extern tree get_vectype_for_scalar_type (tree);
/* In tree-ssa-phiopt.c */
bool empty_block_p (basic_block);
/* In tree-ssa-loop*.c */
-void tree_ssa_lim (struct loops *);
-void tree_ssa_unswitch_loops (struct loops *);
-void canonicalize_induction_variables (struct loops *);
-void tree_unroll_loops_completely (struct loops *, bool);
-void tree_ssa_prefetch_arrays (struct loops *);
-void remove_empty_loops (struct loops *);
-void tree_ssa_iv_optimize (struct loops *);
+void tree_ssa_lim (void);
+unsigned int tree_ssa_unswitch_loops (void);
+unsigned int canonicalize_induction_variables (void);
+unsigned int tree_unroll_loops_completely (bool);
+unsigned int tree_ssa_prefetch_arrays (void);
+unsigned int remove_empty_loops (void);
+void tree_ssa_iv_optimize (void);
bool number_of_iterations_exit (struct loop *, edge,
struct tree_niter_desc *niter, bool);
tree find_loop_niter (struct loop *, edge *);
tree loop_niter_by_eval (struct loop *, edge);
tree find_loop_niter_by_eval (struct loop *, edge *);
-void estimate_numbers_of_iterations (struct loops *);
+void estimate_numbers_of_iterations (void);
bool scev_probably_wraps_p (tree, tree, tree, struct loop *, bool);
bool convert_affine_scev (struct loop *, tree, tree *, tree *, tree, bool);
enum ev_direction {EV_DIR_GROWS, EV_DIR_DECREASES, EV_DIR_UNKNOWN};
enum ev_direction scev_direction (tree);
-void free_numbers_of_iterations_estimates (struct loops *);
+void free_numbers_of_iterations_estimates (void);
void free_numbers_of_iterations_estimates_loop (struct loop *);
void rewrite_into_loop_closed_ssa (bitmap, unsigned);
void verify_loop_closed_ssa (void);
-void loop_commit_inserts (void);
bool for_each_index (tree *, bool (*) (tree, tree *, void *), void *);
void create_iv (tree, tree, tree, struct loop *, block_stmt_iterator *, bool,
tree *, tree *);
void split_loop_exit_edge (edge);
unsigned force_expr_to_var_cost (tree);
-basic_block bsi_insert_on_edge_immediate_loop (edge, tree);
void standard_iv_increment_position (struct loop *, block_stmt_iterator *,
bool *);
basic_block ip_end_pos (struct loop *);
basic_block ip_normal_pos (struct loop *);
-bool tree_duplicate_loop_to_header_edge (struct loop *, edge, struct loops *,
+bool tree_duplicate_loop_to_header_edge (struct loop *, edge,
unsigned int, sbitmap,
- edge, edge *,
- unsigned int *, int);
-struct loop *tree_ssa_loop_version (struct loops *, struct loop *, tree,
+ edge, VEC (edge, heap) **,
+ int);
+struct loop *tree_ssa_loop_version (struct loop *, tree,
basic_block *);
tree expand_simple_operations (tree);
void substitute_in_loop_info (struct loop *, tree, tree);
edge single_dom_exit (struct loop *);
bool can_unroll_loop_p (struct loop *loop, unsigned factor,
struct tree_niter_desc *niter);
-void tree_unroll_loop (struct loops *, struct loop *, unsigned,
+void tree_unroll_loop (struct loop *, unsigned,
edge, struct tree_niter_desc *);
+typedef void (*transform_callback)(struct loop *, void *);
+void tree_transform_and_unroll_loop (struct loop *, unsigned,
+ edge, struct tree_niter_desc *,
+ transform_callback, void *);
bool contains_abnormal_ssa_name_p (tree);
/* In tree-ssa-threadedge.c */
extern bool potentially_threadable_block (basic_block);
extern void thread_across_edge (tree, edge, bool,
- VEC(tree, heap) **, tree (*) (tree));
+ VEC(tree, heap) **, tree (*) (tree, tree));
/* In tree-ssa-loop-im.c */
/* The possibilities of statement movement. */
/* The reasons a variable may escape a function. */
enum escape_type
- {
- NO_ESCAPE = 0, /* Doesn't escape. */
- ESCAPE_STORED_IN_GLOBAL = 1 << 1,
- ESCAPE_TO_ASM = 1 << 2, /* Passed by address to an assembly
- statement. */
- ESCAPE_TO_CALL = 1 << 3, /* Escapes to a function call. */
- ESCAPE_BAD_CAST = 1 << 4, /* Cast from pointer to integer */
- ESCAPE_TO_RETURN = 1 << 5, /* Returned from function. */
- ESCAPE_TO_PURE_CONST = 1 << 6, /* Escapes to a pure or constant
- function call. */
- ESCAPE_IS_GLOBAL = 1 << 7, /* Is a global variable. */
- ESCAPE_IS_PARM = 1 << 8, /* Is an incoming function parameter. */
- ESCAPE_UNKNOWN = 1 << 9 /* We believe it escapes for some reason
- not enumerated above. */
- };
+{
+ NO_ESCAPE = 0, /* Doesn't escape. */
+ ESCAPE_STORED_IN_GLOBAL = 1 << 1,
+ ESCAPE_TO_ASM = 1 << 2, /* Passed by address to an assembly
+ statement. */
+ ESCAPE_TO_CALL = 1 << 3, /* Escapes to a function call. */
+ ESCAPE_BAD_CAST = 1 << 4, /* Cast from pointer to integer */
+ ESCAPE_TO_RETURN = 1 << 5, /* Returned from function. */
+ ESCAPE_TO_PURE_CONST = 1 << 6, /* Escapes to a pure or constant
+ function call. */
+ ESCAPE_IS_GLOBAL = 1 << 7, /* Is a global variable. */
+ ESCAPE_IS_PARM = 1 << 8, /* Is an incoming function argument. */
+ ESCAPE_UNKNOWN = 1 << 9 /* We believe it escapes for
+ some reason not enumerated
+ above. */
+};
/* In tree-flow-inline.h */
static inline bool is_call_clobbered (tree);
/* In tree-vn.c */
bool expressions_equal_p (tree, tree);
-tree get_value_handle (tree);
+static inline tree get_value_handle (tree);
hashval_t vn_compute (tree, hashval_t);
void sort_vuses (VEC (tree, gc) *);
tree vn_lookup_or_add (tree, tree);
bool sra_type_can_be_decomposed_p (tree);
/* In tree-loop-linear.c */
-extern void linear_transform_loops (struct loops *);
+extern void linear_transform_loops (void);
+
+/* In tree-data-ref.c */
+extern void tree_check_data_deps (void);
/* In tree-ssa-loop-ivopts.c */
bool expr_invariant_in_loop_p (struct loop *, tree);
-bool multiplier_allowed_in_address_p (HOST_WIDE_INT);
+bool multiplier_allowed_in_address_p (HOST_WIDE_INT, enum machine_mode);
unsigned multiply_by_cost (HOST_WIDE_INT, enum machine_mode);
/* In tree-ssa-threadupdate.c. */
/* In tree-ssa-address.c */
-/* Affine combination of trees. We keep track of at most MAX_AFF_ELTS elements
- to make things simpler; this is sufficient in most cases. */
-
-#define MAX_AFF_ELTS 8
-
-struct affine_tree_combination
-{
- /* Type of the result of the combination. */
- tree type;
-
- /* Mask modulo that the operations are performed. */
- unsigned HOST_WIDE_INT mask;
-
- /* Constant offset. */
- unsigned HOST_WIDE_INT offset;
-
- /* Number of elements of the combination. */
- unsigned n;
-
- /* Elements and their coefficients. */
- tree elts[MAX_AFF_ELTS];
- unsigned HOST_WIDE_INT coefs[MAX_AFF_ELTS];
-
- /* Remainder of the expression. */
- tree rest;
-};
-
/* Description of a memory address. */
struct mem_address
tree symbol, base, index, step, offset;
};
+struct affine_tree_combination;
tree create_mem_ref (block_stmt_iterator *, tree,
struct affine_tree_combination *);
rtx addr_for_mem_ref (struct mem_address *, bool);
void init_alias_heapvars (void);
void delete_alias_heapvars (void);
+unsigned int execute_fixup_cfg (void);
#include "tree-flow-inline.h"
void swap_tree_operands (tree, tree *, tree *);
-extern void recalculate_used_alone (void);
-extern bool updating_used_alone;
+int least_common_multiple (int, int);
+
#endif /* _TREE_FLOW_H */
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