/* Callgraph handling code.
- Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
+ Free Software Foundation, Inc.
Contributed by Jan Hubicka
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#ifndef GCC_CGRAPH_H
#define GCC_CGRAPH_H
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(())
{
- /* Size of the function before inlining. */
- int self_insns;
+ struct inline_summary {
+ /* Estimated stack frame consumption by the function. */
+ HOST_WIDE_INT estimated_self_stack_size;
+
+ /* Size of the function before inlining. */
+ int self_insns;
+ } inline_summary;
/* 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;
struct cgraph_rtl_info GTY(())
{
- int preferred_incoming_stack_boundary;
+ unsigned int preferred_incoming_stack_boundary;
};
/* The cgraph data structure.
/* 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;
- /* Set once the function is lowered (ie it's CFG is built). */
- bool lowered;
+ unsigned reachable : 1;
+ /* Set once the function is lowered (i.e. its CFG is built). */
+ 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
-struct cgraph_varpool_node GTY(())
+typedef struct cgraph_edge *cgraph_edge_p;
+
+DEF_VEC_P(cgraph_edge_p);
+DEF_VEC_ALLOC_P(cgraph_edge_p,heap);
+
+/* 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_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;
/* In cgraph.c */
void dump_cgraph (FILE *);
+void debug_cgraph (void);
void dump_cgraph_node (FILE *, struct cgraph_node *);
+void debug_cgraph_node (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);
+void cgraph_update_edges_for_call_stmt (tree, tree, 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, 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_lower_function (struct cgraph_node *);
void cgraph_finalize_compilation_unit (void);
void cgraph_optimize (void);
void cgraph_mark_needed_node (struct cgraph_node *);
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 cgraphbuild.c */
+unsigned int rebuild_cgraph_edges (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 **);
+
+
+/* Create a new static variable of type TYPE. */
+tree add_new_static_var (tree type);
+
#endif /* GCC_CGRAPH_H */
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