/* Callgraph handling code.
- Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Contributed by Jan Hubicka
bitmap combined_args_to_skip;
};
+enum node_frequency {
+ /* This function most likely won't be executed at all.
+ (set only when profile feedback is available or via function attribute). */
+ NODE_FREQUENCY_UNLIKELY_EXECUTED,
+ /* For functions that are known to be executed once (i.e. constructors, destructors
+ and main function. */
+ NODE_FREQUENCY_EXECUTED_ONCE,
+ /* The default value. */
+ NODE_FREQUENCY_NORMAL,
+ /* Optimize this function hard
+ (set only when profile feedback is available or via function attribute). */
+ NODE_FREQUENCY_HOT
+};
+
+
/* The cgraph data structure.
Each function decl has assigned cgraph_node listing callees and callers. */
struct cgraph_edge *callers;
struct cgraph_node *next;
struct cgraph_node *previous;
+ /* List of edges representing indirect calls with a yet undetermined
+ callee. */
+ struct cgraph_edge *indirect_calls;
/* For nested functions points to function the node is nested in. */
struct cgraph_node *origin;
/* Points to first nested function, if any. */
/* For normal nodes pointer to the list of alias and thunk nodes,
in alias/thunk nodes pointer to the normal node. */
struct cgraph_node *same_body;
+ /* Circular list of nodes in the same comdat group if non-NULL. */
+ struct cgraph_node *same_comdat_group;
/* 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;
cgraph_remove_unreachable_nodes cgraph still can contain unreachable
nodes when they are needed for virtual clone instantiation. */
unsigned reachable : 1;
+ /* Set when function is reachable by call from other LTRANS partition. */
+ unsigned reachable_from_other_partition : 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. */
unsigned analyzed : 1;
+ /* Set when function is available in the other LTRANS partition. */
+ unsigned in_other_partition : 1;
/* Set when function is scheduled to be processed by local passes. */
unsigned process : 1;
/* Set for aliases once they got through assemble_alias. */
/* Set for alias and thunk nodes, same_body points to the node they are alias
of and they are linked through the next/previous pointers. */
unsigned same_body_alias : 1;
+ /* How commonly executed the node is. Initialized during branch
+ probabilities pass. */
+ ENUM_BITFIELD (node_frequency) frequency : 2;
};
typedef struct cgraph_node *cgraph_node_ptr;
PTR GTY ((skip)) aux;
};
+typedef struct varpool_node *varpool_node_ptr;
+
+DEF_VEC_P(varpool_node_ptr);
+DEF_VEC_ALLOC_P(varpool_node_ptr,heap);
+DEF_VEC_ALLOC_P(varpool_node_ptr,gc);
+
+/* A varpool node set is a collection of varpool nodes. A varpool node
+ can appear in multiple sets. */
+struct GTY(()) varpool_node_set_def
+{
+ htab_t GTY((param_is (struct varpool_node_set_element_def))) hashtab;
+ VEC(varpool_node_ptr, gc) *nodes;
+ PTR GTY ((skip)) aux;
+};
+
typedef struct cgraph_node_set_def *cgraph_node_set;
DEF_VEC_P(cgraph_node_set);
DEF_VEC_ALLOC_P(cgraph_node_set,gc);
DEF_VEC_ALLOC_P(cgraph_node_set,heap);
+typedef struct varpool_node_set_def *varpool_node_set;
+
+DEF_VEC_P(varpool_node_set);
+DEF_VEC_ALLOC_P(varpool_node_set,gc);
+DEF_VEC_ALLOC_P(varpool_node_set,heap);
+
/* A cgraph node set element contains an index in the vector of nodes in
the set. */
struct GTY(()) cgraph_node_set_element_def
unsigned index;
} cgraph_node_set_iterator;
+/* A varpool node set element contains an index in the vector of nodes in
+ the set. */
+struct GTY(()) varpool_node_set_element_def
+{
+ struct varpool_node *node;
+ HOST_WIDE_INT index;
+};
+
+typedef struct varpool_node_set_element_def *varpool_node_set_element;
+typedef const struct varpool_node_set_element_def *const_varpool_node_set_element;
+
+/* Iterator structure for varpool node sets. */
+typedef struct
+{
+ varpool_node_set set;
+ unsigned index;
+} varpool_node_set_iterator;
+
#define DEFCIFCODE(code, string) CIF_ ## code,
/* Reasons for inlining failures. */
typedef enum {
CIF_N_REASONS
} cgraph_inline_failed_t;
+/* Structure containing additional information about an indirect call. */
+
+struct GTY(()) cgraph_indirect_call_info
+{
+ /* Index of the parameter that is called. */
+ int param_index;
+};
+
struct GTY((chain_next ("%h.next_caller"), chain_prev ("%h.prev_caller"))) cgraph_edge {
/* Expected number of executions: calculated in profile.c. */
gcov_type count;
struct cgraph_edge *prev_callee;
struct cgraph_edge *next_callee;
gimple call_stmt;
+ /* Additional information about an indirect call. Not cleared when an edge
+ becomes direct. */
+ struct cgraph_indirect_call_info *indirect_info;
PTR GTY ((skip (""))) aux;
/* When equal to CIF_OK, inline this call. Otherwise, points to the
explanation why function was not inlined. */
int uid;
/* Depth of loop nest, 1 means no loop nest. */
unsigned short int loop_nest;
- /* Whether this edge describes a call that was originally indirect. */
- unsigned int indirect_call : 1;
+ /* Whether this edge was made direct by indirect inlining. */
+ unsigned int indirect_inlining_edge : 1;
+ /* Whether this edge describes an indirect call with an undetermined
+ callee. */
+ unsigned int indirect_unknown_callee : 1;
+ /* Whether this edge is still a dangling */
/* True if the corresponding CALL stmt cannot be inlined. */
unsigned int call_stmt_cannot_inline_p : 1;
/* Can this call throw externally? */
struct GTY((chain_next ("%h.next"))) varpool_node {
tree decl;
/* Pointer to the next function in varpool_nodes. */
- struct varpool_node *next;
+ struct varpool_node *next, *prev;
/* Pointer to the next function in varpool_nodes_queue. */
- struct varpool_node *next_needed;
+ struct varpool_node *next_needed, *prev_needed;
+ /* For normal nodes a pointer to the first extra name alias. For alias
+ nodes a pointer to the normal node. */
+ struct varpool_node *extra_name;
/* Ordering of all cgraph nodes. */
int order;
unsigned output : 1;
/* Set when function is visible by other units. */
unsigned externally_visible : 1;
- /* Set for aliases once they got through assemble_alias. */
+ /* Set for aliases once they got through assemble_alias. Also set for
+ extra name aliases in varpool_extra_name_alias. */
unsigned alias : 1;
+ /* Set when variable is used from other LTRANS partition. */
+ unsigned used_from_other_partition : 1;
+ /* Set when variable is available in the other LTRANS partition. */
+ unsigned in_other_partition : 1;
};
/* Every top level asm statement is put into a cgraph_asm_node. */
struct cgraph_edge *cgraph_create_edge (struct cgraph_node *,
struct cgraph_node *,
gimple, gcov_type, int, int);
-
+struct cgraph_edge *cgraph_create_indirect_edge (struct cgraph_node *, gimple,
+ gcov_type, int, int);
struct cgraph_node * cgraph_get_node (tree);
struct cgraph_node *cgraph_node (tree);
bool cgraph_same_body_alias (tree, tree);
void cgraph_set_call_stmt_including_clones (struct cgraph_node *, gimple, gimple);
void cgraph_create_edge_including_clones (struct cgraph_node *,
struct cgraph_node *,
- gimple, gcov_type, int, int,
+ gimple, gimple, gcov_type, int, int,
cgraph_inline_failed_t);
void cgraph_update_edges_for_call_stmt (gimple, tree, gimple);
struct cgraph_local_info *cgraph_local_info (tree);
int, bool, VEC(cgraph_edge_p,heap) *);
void cgraph_redirect_edge_callee (struct cgraph_edge *, struct cgraph_node *);
+void cgraph_make_edge_direct (struct cgraph_edge *, struct cgraph_node *);
struct cgraph_asm_node *cgraph_add_asm_node (tree);
VEC(ipa_replace_map_p,gc)* tree_map,
bitmap args_to_skip);
+void cgraph_set_nothrow_flag (struct cgraph_node *, bool);
+void cgraph_set_readonly_flag (struct cgraph_node *, bool);
+void cgraph_set_pure_flag (struct cgraph_node *, bool);
+void cgraph_set_looping_const_or_pure_flag (struct cgraph_node *, bool);
+
/* In cgraphunit.c */
void cgraph_finalize_function (tree, bool);
void cgraph_mark_if_needed (tree);
struct cgraph_2node_hook_list *cgraph_add_node_duplication_hook (cgraph_2node_hook, void *);
void cgraph_remove_node_duplication_hook (struct cgraph_2node_hook_list *);
void cgraph_materialize_all_clones (void);
-
+gimple cgraph_redirect_edge_call_stmt_to_callee (struct cgraph_edge *);
+bool cgraph_propagate_frequency (struct cgraph_node *node);
/* In cgraphbuild.c */
unsigned int rebuild_cgraph_edges (void);
void reset_inline_failed (struct cgraph_node *);
void dump_cgraph_node_set (FILE *, cgraph_node_set);
void debug_cgraph_node_set (cgraph_node_set);
+varpool_node_set varpool_node_set_new (void);
+varpool_node_set_iterator varpool_node_set_find (varpool_node_set,
+ struct varpool_node *);
+void varpool_node_set_add (varpool_node_set, struct varpool_node *);
+void varpool_node_set_remove (varpool_node_set, struct varpool_node *);
+void dump_varpool_node_set (FILE *, varpool_node_set);
+void debug_varpool_node_set (varpool_node_set);
/* In predict.c */
bool cgraph_maybe_hot_edge_p (struct cgraph_edge *e);
void varpool_finalize_decl (tree);
bool decide_is_variable_needed (struct varpool_node *, tree);
enum availability cgraph_variable_initializer_availability (struct varpool_node *);
+void cgraph_make_decl_local (tree);
void cgraph_make_node_local (struct cgraph_node *);
bool cgraph_node_can_be_local_p (struct cgraph_node *);
+
+struct varpool_node * varpool_get_node (tree decl);
+void varpool_remove_node (struct varpool_node *node);
bool varpool_assemble_pending_decls (void);
bool varpool_assemble_decl (struct varpool_node *node);
bool varpool_analyze_pending_decls (void);
void varpool_remove_unreferenced_decls (void);
void varpool_empty_needed_queue (void);
+bool varpool_extra_name_alias (tree, tree);
const char * varpool_node_name (struct varpool_node *node);
/* Walk all reachable static variables. */
LTO_cgraph_overwritable_node,
LTO_cgraph_unavail_node,
LTO_cgraph_edge,
+ LTO_cgraph_indirect_edge,
LTO_cgraph_last_tag
};
return htab_elements (set->hashtab);
}
+/* Return true if iterator VSI points to nothing. */
+static inline bool
+vsi_end_p (varpool_node_set_iterator vsi)
+{
+ return vsi.index >= VEC_length (varpool_node_ptr, vsi.set->nodes);
+}
+
+/* Advance iterator VSI. */
+static inline void
+vsi_next (varpool_node_set_iterator *vsi)
+{
+ vsi->index++;
+}
+
+/* Return the node pointed to by VSI. */
+static inline struct varpool_node *
+vsi_node (varpool_node_set_iterator vsi)
+{
+ return VEC_index (varpool_node_ptr, vsi.set->nodes, vsi.index);
+}
+
+/* Return an iterator to the first node in SET. */
+static inline varpool_node_set_iterator
+vsi_start (varpool_node_set set)
+{
+ varpool_node_set_iterator vsi;
+
+ vsi.set = set;
+ vsi.index = 0;
+ return vsi;
+}
+
+/* Return true if SET contains NODE. */
+static inline bool
+varpool_node_in_set_p (struct varpool_node *node, varpool_node_set set)
+{
+ varpool_node_set_iterator vsi;
+ vsi = varpool_node_set_find (set, node);
+ return !vsi_end_p (vsi);
+}
+
+/* Return number of nodes in SET. */
+static inline size_t
+varpool_node_set_size (varpool_node_set set)
+{
+ return htab_elements (set->hashtab);
+}
+
/* Uniquize all constants that appear in memory.
Each constant in memory thus far output is recorded
in `const_desc_table'. */
static inline bool
cgraph_can_remove_if_no_direct_calls_p (struct cgraph_node *node)
{
- return (!node->needed
+ return (!node->needed && !node->reachable_from_other_partition
&& (DECL_COMDAT (node->decl) || !node->local.externally_visible));
}
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