/* Callgraph handling code.
- Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
Contributed by Jan Hubicka
This file is part of GCC.
AVAIL_LOCAL
};
+extern const char * const cgraph_availability_names[];
+
/* Information about the function collected locally.
Available after function is analyzed. */
struct cgraph_local_info GTY(())
{
+ /* Estimated stack frame consumption by the function. */
+ HOST_WIDE_INT estimated_self_stack_size;
+
/* Size of the function before inlining. */
int self_insns;
/* Set when function function is visible in current compilation unit only
and its address is never taken. */
- bool local;
+ unsigned local : 1;
/* Set when function is visible by other units. */
- bool externally_visible;
+ unsigned externally_visible : 1;
/* Set once it has been finalized so we consider it to be output. */
- bool finalized;
+ unsigned finalized : 1;
/* False when there something makes inlining impossible (such as va_arg). */
- bool inlinable;
+ unsigned inlinable : 1;
/* True when function should be inlined independently on its size. */
- bool disregard_inline_limits;
+ unsigned disregard_inline_limits : 1;
/* True when the function has been originally extern inline, but it is
redefined now. */
- bool redefined_extern_inline;
+ unsigned redefined_extern_inline : 1;
/* True if statics_read_for_function and
statics_written_for_function contain valid data. */
- bool for_functions_valid;
+ unsigned for_functions_valid : 1;
/* True if the function is going to be emitted in some other translation
unit, referenced from vtable. */
- bool vtable_method;
+ unsigned vtable_method : 1;
};
/* Information about the function that needs to be computed globally
struct cgraph_global_info GTY(())
{
+ /* Estimated stack frame consumption by the function. */
+ HOST_WIDE_INT estimated_stack_size;
+ /* Expected offset of the stack frame of inlined function. */
+ HOST_WIDE_INT stack_frame_offset;
+
/* For inline clones this points to the function they will be inlined into. */
struct cgraph_node *inlined_to;
/* Pointer to a single unique cgraph node for this function. If the
function is to be output, this is the copy that will survive. */
struct cgraph_node *master_clone;
-
+ /* For functions with many calls sites it holds map from call expression
+ to the edge to speed up cgraph_edge function. */
+ htab_t GTY((param_is (struct cgraph_edge))) call_site_hash;
+
PTR GTY ((skip)) aux;
struct cgraph_local_info local;
struct cgraph_global_info global;
struct cgraph_rtl_info rtl;
-
+
/* Expected number of executions: calculated in profile.c. */
gcov_type count;
/* Unique id of the node. */
int uid;
/* Ordering of all cgraph nodes. */
int order;
+
/* Set when function must be output - it is externally visible
or its address is taken. */
- bool needed;
+ unsigned needed : 1;
/* Set when function is reachable by call from other function
that is either reachable or needed. */
- bool reachable;
+ unsigned reachable : 1;
/* Set once the function is lowered (i.e. its CFG is built). */
- bool lowered;
+ unsigned lowered : 1;
/* Set once the function has been instantiated and its callee
lists created. */
- bool analyzed;
+ unsigned analyzed : 1;
/* Set when function is scheduled to be assembled. */
- bool output;
- /* Set when function is visible by other units. */
- bool externally_visible;
+ unsigned output : 1;
/* Set for aliases once they got through assemble_alias. */
- bool alias;
+ unsigned alias : 1;
/* In non-unit-at-a-time mode the function body of inline candidates is saved
into clone before compiling so the function in original form can be
inlined later. This pointer points to the clone. */
tree inline_decl;
+
+ /* unique id for profiling. pid is not suitable because of different
+ number of cfg nodes with -fprofile-generate and -fprofile-use */
+ int pid;
};
struct cgraph_edge GTY((chain_next ("%h.next_caller"), chain_prev ("%h.prev_caller")))
const char *inline_failed;
/* Expected number of executions: calculated in profile.c. */
gcov_type count;
+ /* Expected frequency of executions within the function.
+ When set to CGRAPH_FREQ_BASE, the edge is expected to be called once
+ per function call. The range is 0 to CGRAPH_FREQ_MAX. */
+ int frequency;
/* Depth of loop nest, 1 means no loop nest. */
int loop_nest;
};
-/* The cgraph_varpool data structure.
- Each static variable decl has assigned cgraph_varpool_node. */
+#define CGRAPH_FREQ_BASE 1000
+#define CGRAPH_FREQ_MAX 100000
+
+typedef struct cgraph_edge *cgraph_edge_p;
+
+DEF_VEC_P(cgraph_edge_p);
+DEF_VEC_ALLOC_P(cgraph_edge_p,heap);
-struct cgraph_varpool_node GTY(())
+/* The varpool data structure.
+ Each static variable decl has assigned varpool_node. */
+
+struct varpool_node GTY(())
{
tree decl;
- /* Pointer to the next function in cgraph_varpool_nodes. */
- struct cgraph_varpool_node *next;
- /* Pointer to the next function in cgraph_varpool_nodes_queue. */
- struct cgraph_varpool_node *next_needed;
+ /* Pointer to the next function in varpool_nodes. */
+ struct varpool_node *next;
+ /* Pointer to the next function in varpool_nodes_queue. */
+ struct varpool_node *next_needed;
/* Ordering of all cgraph nodes. */
int order;
/* Set when function must be output - it is externally visible
or its address is taken. */
- bool needed;
+ unsigned needed : 1;
/* Needed variables might become dead by optimization. This flag
forces the variable to be output even if it appears dead otherwise. */
- bool force_output;
+ unsigned force_output : 1;
/* Set once the variable has been instantiated and its callee
lists created. */
- bool analyzed;
+ unsigned analyzed : 1;
/* Set once it has been finalized so we consider it to be output. */
- bool finalized;
+ unsigned finalized : 1;
/* Set when variable is scheduled to be assembled. */
- bool output;
+ unsigned output : 1;
/* Set when function is visible by other units. */
- bool externally_visible;
+ unsigned externally_visible : 1;
/* Set for aliases once they got through assemble_alias. */
- bool alias;
+ unsigned alias : 1;
};
/* Every top level asm statement is put into a cgraph_asm_node. */
extern GTY(()) struct cgraph_node *cgraph_nodes;
extern GTY(()) int cgraph_n_nodes;
extern GTY(()) int cgraph_max_uid;
+extern GTY(()) int cgraph_max_pid;
extern bool cgraph_global_info_ready;
+enum cgraph_state
+{
+ /* Callgraph is being constructed. It is safe to add new functions. */
+ CGRAPH_STATE_CONSTRUCTION,
+ /* Callgraph is built and IPA passes are being run. */
+ CGRAPH_STATE_IPA,
+ /* Callgraph is built and all functions are transformed to SSA form. */
+ CGRAPH_STATE_IPA_SSA,
+ /* Functions are now ordered and being passed to RTL expanders. */
+ CGRAPH_STATE_EXPANSION,
+ /* All cgraph expansion is done. */
+ CGRAPH_STATE_FINISHED
+};
+extern enum cgraph_state cgraph_state;
extern bool cgraph_function_flags_ready;
extern GTY(()) struct cgraph_node *cgraph_nodes_queue;
-extern GTY(()) struct cgraph_node *cgraph_expand_queue;
+extern GTY(()) struct cgraph_node *cgraph_new_nodes;
-extern GTY(()) struct cgraph_varpool_node *cgraph_varpool_first_unanalyzed_node;
-extern GTY(()) struct cgraph_varpool_node *cgraph_varpool_nodes_queue;
extern GTY(()) struct cgraph_asm_node *cgraph_asm_nodes;
extern GTY(()) int cgraph_order;
void dump_cgraph (FILE *);
void dump_cgraph_node (FILE *, struct cgraph_node *);
void cgraph_insert_node_to_hashtable (struct cgraph_node *node);
-void dump_varpool (FILE *);
-void dump_cgraph_varpool_node (FILE *, struct cgraph_varpool_node *);
void cgraph_remove_edge (struct cgraph_edge *);
void cgraph_remove_node (struct cgraph_node *);
+void cgraph_release_function_body (struct cgraph_node *);
void cgraph_node_remove_callees (struct cgraph_node *node);
struct cgraph_edge *cgraph_create_edge (struct cgraph_node *,
struct cgraph_node *,
- tree, gcov_type, int);
+ tree, gcov_type, int, int);
struct cgraph_node *cgraph_node (tree);
struct cgraph_node *cgraph_node_for_asm (tree asmname);
struct cgraph_edge *cgraph_edge (struct cgraph_node *, tree);
+void cgraph_set_call_stmt (struct cgraph_edge *, tree);
struct cgraph_local_info *cgraph_local_info (tree);
struct cgraph_global_info *cgraph_global_info (tree);
struct cgraph_rtl_info *cgraph_rtl_info (tree);
const char * cgraph_node_name (struct cgraph_node *);
struct cgraph_edge * cgraph_clone_edge (struct cgraph_edge *,
- struct cgraph_node *,
- tree, gcov_type, int, bool);
-struct cgraph_node * cgraph_clone_node (struct cgraph_node *, gcov_type,
+ struct cgraph_node *,
+ tree, gcov_type, int, int, bool);
+struct cgraph_node * cgraph_clone_node (struct cgraph_node *, gcov_type, int,
int, bool);
-struct cgraph_varpool_node *cgraph_varpool_node (tree);
-struct cgraph_varpool_node *cgraph_varpool_node_for_asm (tree asmname);
-void cgraph_varpool_mark_needed_node (struct cgraph_varpool_node *);
-void cgraph_varpool_finalize_decl (tree);
void cgraph_redirect_edge_callee (struct cgraph_edge *, struct cgraph_node *);
struct cgraph_asm_node *cgraph_add_asm_node (tree);
bool cgraph_function_possibly_inlined_p (tree);
void cgraph_unnest_node (struct cgraph_node *);
-void cgraph_varpool_enqueue_needed_node (struct cgraph_varpool_node *);
-void cgraph_varpool_reset_queue (void);
-bool decide_is_variable_needed (struct cgraph_varpool_node *, tree);
enum availability cgraph_function_body_availability (struct cgraph_node *);
-enum availability cgraph_variable_initializer_availability (struct cgraph_varpool_node *);
bool cgraph_is_master_clone (struct cgraph_node *);
struct cgraph_node *cgraph_master_clone (struct cgraph_node *);
-void cgraph_add_new_function (tree);
+void cgraph_add_new_function (tree, bool);
/* In cgraphunit.c */
-bool cgraph_assemble_pending_functions (void);
-bool cgraph_varpool_assemble_pending_decls (void);
void cgraph_finalize_function (tree, bool);
void cgraph_finalize_compilation_unit (void);
void cgraph_optimize (void);
void cgraph_reset_static_var_maps (void);
void init_cgraph (void);
struct cgraph_node *cgraph_function_versioning (struct cgraph_node *,
- varray_type, varray_type);
+ VEC(cgraph_edge_p,heap)*,
+ varray_type);
void cgraph_analyze_function (struct cgraph_node *);
struct cgraph_node *save_inline_function_body (struct cgraph_node *);
+void record_references_in_initializer (tree);
+bool cgraph_process_new_functions (void);
/* In ipa.c */
bool cgraph_remove_unreachable_nodes (bool, FILE *);
int cgraph_postorder (struct cgraph_node **);
+/* In varpool.c */
+
+extern GTY(()) struct varpool_node *varpool_nodes_queue;
+extern GTY(()) struct varpool_node *varpool_nodes;
+
+struct varpool_node *varpool_node (tree);
+struct varpool_node *varpool_node_for_asm (tree asmname);
+void varpool_mark_needed_node (struct varpool_node *);
+void dump_varpool (FILE *);
+void dump_varpool_node (FILE *, struct varpool_node *);
+
+void varpool_finalize_decl (tree);
+bool decide_is_variable_needed (struct varpool_node *, tree);
+enum availability cgraph_variable_initializer_availability (struct varpool_node *);
+
+bool varpool_assemble_pending_decls (void);
+bool varpool_assemble_decl (struct varpool_node *node);
+bool varpool_analyze_pending_decls (void);
+void varpool_output_debug_info (void);
+void varpool_remove_unreferenced_decls (void);
+
+/* Walk all reachable static variables. */
+#define FOR_EACH_STATIC_VARIABLE(node) \
+ for ((node) = varpool_nodes_queue; (node); (node) = (node)->next_needed)
+
+/* Return first reachable static variable with initializer. */
+static inline struct varpool_node *
+varpool_first_static_initializer (void)
+{
+ struct varpool_node *node;
+ for (node = varpool_nodes_queue; node; node = node->next_needed)
+ {
+ gcc_assert (TREE_CODE (node->decl) == VAR_DECL);
+ if (DECL_INITIAL (node->decl))
+ return node;
+ }
+ return NULL;
+}
+
+/* Return next reachable static variable with initializer after NODE. */
+static inline struct varpool_node *
+varpool_next_static_initializer (struct varpool_node *node)
+{
+ for (node = node->next_needed; node; node = node->next_needed)
+ {
+ gcc_assert (TREE_CODE (node->decl) == VAR_DECL);
+ if (DECL_INITIAL (node->decl))
+ return node;
+ }
+ return NULL;
+}
+
+/* Walk all static variables with initializer set. */
+#define FOR_EACH_STATIC_INITIALIZER(node) \
+ for ((node) = varpool_first_static_initializer (); (node); \
+ (node) = varpool_next_static_initializer (node))
+
/* In ipa-inline.c */
-bool cgraph_decide_inlining_incrementally (struct cgraph_node *, bool);
void cgraph_clone_inlined_nodes (struct cgraph_edge *, bool, bool);
void cgraph_mark_inline_edge (struct cgraph_edge *, bool);
bool cgraph_default_inline_p (struct cgraph_node *, const char **);