#ifndef GCC_CGRAPH_H
#define GCC_CGRAPH_H
+
+#include "plugin-api.h"
+#include "vec.h"
#include "tree.h"
#include "basic-block.h"
+#include "function.h"
+#include "ipa-ref.h" /* FIXME: inappropriate dependency of cgraph on IPA. */
enum availability
{
struct lto_file_decl_data;
extern const char * const cgraph_availability_names[];
+extern const char * const ld_plugin_symbol_resolution_names[];
/* Function inlining information. */
struct GTY(()) cgraph_local_info {
/* File stream where this node is being written to. */
- struct lto_file_decl_data * GTY ((skip)) lto_file_data;
+ struct lto_file_decl_data * lto_file_data;
struct inline_summary inline_summary;
/* Set when function is visible by other units. */
unsigned externally_visible : 1;
-
+
/* Set once it has been finalized so we consider it to be output. */
unsigned finalized : 1;
/* False when there something makes inlining impossible (such as va_arg). */
unsigned inlinable : 1;
+ /* False when there something makes versioning impossible.
+ Currently computed and used only by ipa-cp. */
+ unsigned versionable : 1;
+
/* True when function should be inlined independently on its size. */
unsigned disregard_inline_limits : 1;
redefined now. */
unsigned redefined_extern_inline : 1;
- /* True if statics_read_for_function and
- statics_written_for_function contain valid data. */
- unsigned for_functions_valid : 1;
-
/* True if the function is going to be emitted in some other translation
unit, referenced from vtable. */
unsigned vtable_method : 1;
/* Estimated growth after inlining. INT_MIN if not computed. */
int estimated_growth;
-
- /* Set iff the function has been inlined at least once. */
- bool inlined;
};
/* Information about the function that is propagated by the RTL backend.
tree old_tree;
/* The new (replacing) tree. */
tree new_tree;
+ /* Parameter number to replace, when old_tree is NULL. */
+ int parm_num;
/* True when a substitution should be done, false otherwise. */
bool replace_p;
/* True when we replace a reference to old_tree. */
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. */
/* 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;
+ /* Declaration node used to be clone of. */
+ tree former_clone_of;
PTR GTY ((skip)) aux;
per-function in order to allow IPA passes to introduce new functions. */
VEC(ipa_opt_pass,heap) * GTY((skip)) ipa_transforms_to_apply;
+ struct ipa_ref_list ref_list;
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;
+ /* How to scale counts at materialization time; used to merge
+ LTO units with different number of profile runs. */
+ int count_materialization_scale;
/* Unique id of the node. */
int uid;
/* Ordering of all cgraph nodes. */
/* unique id for profiling. pid is not suitable because of different
number of cfg nodes with -fprofile-generate and -fprofile-use */
int pid;
+ enum ld_plugin_symbol_resolution resolution;
/* Set when function must be output for some reason. The primary
use of this flag is to mark functions needed to be output for
/* Set once the function has been instantiated and its callee
lists created. */
unsigned analyzed : 1;
- /* Set when function is available in the other LTO partition. */
+ /* Set when function is available in the other LTRANS partition.
+ During WPA output it is used to mark nodes that are present in
+ multiple partitions. */
unsigned in_other_partition : 1;
/* Set when function is scheduled to be processed by local passes. */
unsigned process : 1;
/* How commonly executed the node is. Initialized during branch
probabilities pass. */
ENUM_BITFIELD (node_frequency) frequency : 2;
+ /* True when function can only be called at startup (from static ctor). */
+ unsigned only_called_at_startup : 1;
+ /* True when function can only be called at startup (from static dtor). */
+ unsigned only_called_at_exit : 1;
};
typedef struct cgraph_node *cgraph_node_ptr;
{
htab_t GTY((param_is (struct cgraph_node_set_element_def))) hashtab;
VEC(cgraph_node_ptr, gc) *nodes;
- 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;
};
typedef struct cgraph_node_set_def *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 {
struct GTY(()) cgraph_indirect_call_info
{
+ /* Offset accumulated from ancestor jump functions of inlined call graph
+ edges. */
+ HOST_WIDE_INT anc_offset;
+ /* OBJ_TYPE_REF_TOKEN of a polymorphic call (if polymorphic is set). */
+ HOST_WIDE_INT otr_token;
+ /* Type of the object from OBJ_TYPE_REF_OBJECT. */
+ tree otr_type;
+ /* Delta by which must be added to this parameter. For polymorphic calls
+ only. */
+ tree thunk_delta;
/* Index of the parameter that is called. */
int param_index;
+ /* ECF flags determined from the caller. */
+ int ecf_flags;
+
+ /* Set when the call is a virtual call with the parameter being the
+ associated object pointer rather than a simple direct call. */
+ unsigned polymorphic : 1;
};
struct GTY((chain_next ("%h.next_caller"), chain_prev ("%h.prev_caller"))) cgraph_edge {
/* The varpool data structure.
Each static variable decl has assigned varpool_node. */
-struct GTY((chain_next ("%h.next"))) varpool_node {
+struct GTY((chain_next ("%h.next"), chain_prev ("%h.prev"))) 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;
+ /* Circular list of nodes in the same comdat group if non-NULL. */
+ struct varpool_node *same_comdat_group;
+ struct ipa_ref_list ref_list;
+ /* File stream where this node is being written to. */
+ struct lto_file_decl_data * lto_file_data;
+ PTR GTY ((skip)) aux;
/* Ordering of all cgraph nodes. */
int order;
+ enum ld_plugin_symbol_resolution resolution;
/* Set when function must be output - it is externally visible
or its address is taken. */
/* 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.
+ During WPA output it is used to mark nodes that are present in
+ multiple partitions. */
+ 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,
+struct cgraph_edge *cgraph_create_indirect_edge (struct cgraph_node *, gimple, int,
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_add_thunk (tree, tree, bool, HOST_WIDE_INT, HOST_WIDE_INT, tree, tree);
+struct cgraph_node * cgraph_get_node (const_tree);
+struct cgraph_node * cgraph_get_node_or_alias (const_tree);
+struct cgraph_node * cgraph_node (tree);
+struct cgraph_node * cgraph_same_body_alias (tree, tree);
+struct cgraph_node * cgraph_add_thunk (tree, tree, bool, HOST_WIDE_INT,
+ HOST_WIDE_INT, tree, tree);
void cgraph_remove_same_body_alias (struct cgraph_node *);
struct cgraph_node *cgraph_node_for_asm (tree);
struct cgraph_edge *cgraph_edge (struct cgraph_node *, gimple);
struct cgraph_edge * cgraph_clone_edge (struct cgraph_edge *,
struct cgraph_node *, gimple,
unsigned, gcov_type, int, int, bool);
-struct cgraph_node * cgraph_clone_node (struct cgraph_node *, gcov_type, int,
+struct cgraph_node * cgraph_clone_node (struct cgraph_node *, tree, gcov_type, int,
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 *);
+void cgraph_make_edge_direct (struct cgraph_edge *, struct cgraph_node *, tree);
struct cgraph_asm_node *cgraph_add_asm_node (tree);
struct cgraph_node * cgraph_create_virtual_clone (struct cgraph_node *old_node,
VEC(cgraph_edge_p,heap)*,
VEC(ipa_replace_map_p,gc)* tree_map,
- bitmap args_to_skip);
+ bitmap args_to_skip,
+ const char *clone_name);
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);
+void cgraph_set_const_flag (struct cgraph_node *, bool, bool);
+void cgraph_set_pure_flag (struct cgraph_node *, bool, bool);
+tree clone_function_name (tree decl, const char *);
+bool cgraph_node_cannot_return (struct cgraph_node *);
+bool cgraph_edge_cannot_lead_to_return (struct cgraph_edge *);
+bool cgraph_will_be_removed_from_program_if_no_direct_calls
+ (struct cgraph_node *node);
+bool cgraph_can_remove_if_no_direct_calls_and_refs_p
+ (struct cgraph_node *node);
+bool resolution_used_from_other_file_p (enum ld_plugin_symbol_resolution resolution);
+bool cgraph_used_from_object_file_p (struct cgraph_node *node);
+bool varpool_used_from_object_file_p (struct varpool_node *node);
/* In cgraphunit.c */
+extern FILE *cgraph_dump_file;
void cgraph_finalize_function (tree, bool);
void cgraph_mark_if_needed (tree);
void cgraph_finalize_compilation_unit (void);
struct cgraph_node *cgraph_function_versioning (struct cgraph_node *,
VEC(cgraph_edge_p,heap)*,
VEC(ipa_replace_map_p,gc)*,
- bitmap);
-void tree_function_versioning (tree, tree, VEC (ipa_replace_map_p,gc)*, bool, bitmap);
+ bitmap, bitmap, basic_block,
+ const char *);
+void tree_function_versioning (tree, tree, VEC (ipa_replace_map_p,gc)*, bool, bitmap,
+ bitmap, basic_block);
struct cgraph_node *save_inline_function_body (struct cgraph_node *);
void record_references_in_initializer (tree, bool);
bool cgraph_process_new_functions (void);
bool cgraph_propagate_frequency (struct cgraph_node *node);
/* In cgraphbuild.c */
unsigned int rebuild_cgraph_edges (void);
+void cgraph_rebuild_references (void);
void reset_inline_failed (struct cgraph_node *);
int compute_call_stmt_bb_frequency (tree, basic_block bb);
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);
+void ipa_discover_readonly_nonaddressable_vars (void);
+bool cgraph_comdat_can_be_unshared_p (struct cgraph_node *);
/* In predict.c */
bool cgraph_maybe_hot_edge_p (struct cgraph_edge *e);
void cgraph_make_node_local (struct cgraph_node *);
bool cgraph_node_can_be_local_p (struct cgraph_node *);
+
+struct varpool_node * varpool_get_node (const_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);
+struct varpool_node * varpool_extra_name_alias (tree, tree);
const char * varpool_node_name (struct varpool_node *node);
+void varpool_reset_queue (void);
+bool const_value_known_p (tree);
/* Walk all reachable static variables. */
#define FOR_EACH_STATIC_VARIABLE(node) \
struct varpool_node *node;
for (node = varpool_nodes_queue; node; node = node->next_needed)
{
- gcc_assert (TREE_CODE (node->decl) == VAR_DECL);
+ gcc_checking_assert (TREE_CODE (node->decl) == VAR_DECL);
if (DECL_INITIAL (node->decl))
return node;
}
{
for (node = node->next_needed; node; node = node->next_needed)
{
- gcc_assert (TREE_CODE (node->decl) == VAR_DECL);
+ gcc_checking_assert (TREE_CODE (node->decl) == VAR_DECL);
if (DECL_INITIAL (node->decl))
return node;
}
/* Create a new static variable of type TYPE. */
tree add_new_static_var (tree type);
-/* lto-cgraph.c */
-
-enum LTO_cgraph_tags
-{
- /* Must leave 0 for the stopper. */
- LTO_cgraph_avail_node = 1,
- LTO_cgraph_overwritable_node,
- LTO_cgraph_unavail_node,
- LTO_cgraph_edge,
- LTO_cgraph_indirect_edge,
- LTO_cgraph_last_tag
-};
-
-extern const char * LTO_cgraph_tag_names[LTO_cgraph_last_tag];
-
-#define LCC_NOT_FOUND (-1)
-
-
/* Return true if iterator CSI points to nothing. */
static inline bool
csi_end_p (cgraph_node_set_iterator csi)
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'. */
hashval_t hash;
};
+/* Return true if set is nonempty. */
+static inline bool
+cgraph_node_set_nonempty_p (cgraph_node_set set)
+{
+ return !VEC_empty (cgraph_node_ptr, set->nodes);
+}
+
+/* Return true if set is nonempty. */
+static inline bool
+varpool_node_set_nonempty_p (varpool_node_set set)
+{
+ return !VEC_empty (varpool_node_ptr, set->nodes);
+}
+
/* Return true when function NODE is only called directly.
i.e. it is not externally visible, address was not taken and
it is not used in any other non-standard way. */
static inline bool
cgraph_only_called_directly_p (struct cgraph_node *node)
{
- return !node->needed && !node->local.externally_visible;
+ gcc_assert (!node->global.inlined_to);
+ return (!node->needed && !node->address_taken
+ && !node->reachable_from_other_partition
+ && !DECL_STATIC_CONSTRUCTOR (node->decl)
+ && !DECL_STATIC_DESTRUCTOR (node->decl)
+ && !node->local.externally_visible);
}
/* Return true when function NODE can be removed from callgraph
static inline bool
cgraph_can_remove_if_no_direct_calls_p (struct cgraph_node *node)
{
- return (!node->needed && !node->reachable_from_other_partition
- && (DECL_COMDAT (node->decl) || !node->local.externally_visible));
+ /* Extern inlines can always go, we will use the external definition. */
+ if (DECL_EXTERNAL (node->decl))
+ return true;
+ return !node->address_taken && cgraph_can_remove_if_no_direct_calls_and_refs_p (node);
+}
+
+/* Return true when function NODE can be removed from callgraph
+ if all direct calls are eliminated. */
+
+static inline bool
+varpool_can_remove_if_no_refs (struct varpool_node *node)
+{
+ return (!node->force_output && !node->used_from_other_partition
+ && (flag_toplevel_reorder || DECL_COMDAT (node->decl)
+ || DECL_ARTIFICIAL (node->decl))
+ && (DECL_COMDAT (node->decl) || !node->externally_visible));
+}
+
+/* Return true when all references to VNODE must be visible in ipa_ref_list.
+ i.e. if the variable is not externally visible or not used in some magic
+ way (asm statement or such).
+ The magic uses are all sumarized in force_output flag. */
+
+static inline bool
+varpool_all_refs_explicit_p (struct varpool_node *vnode)
+{
+ return (!vnode->externally_visible
+ && !vnode->used_from_other_partition
+ && !vnode->force_output);
}
/* Constant pool accessor function. */
htab_t constant_pool_htab (void);
+/* FIXME: inappropriate dependency of cgraph on IPA. */
+#include "ipa-ref-inline.h"
+
#endif /* GCC_CGRAPH_H */