#ifndef GCC_CGRAPH_H
#define GCC_CGRAPH_H
+#include "profile-count.h"
#include "ipa-ref.h"
#include "plugin-api.h"
extern const char * const ld_plugin_symbol_resolution_names[];
extern const char * const tls_model_names[];
-/* Information about thunk, used only for same body aliases. */
+/* Sub-structure of cgraph_node. Holds information about thunk, used only for
+ same body aliases.
+
+ Thunks are basically wrappers around methods which are introduced in case
+ of multiple inheritance in order to adjust the value of the "this" pointer
+ or of the returned value.
+
+ In the case of this-adjusting thunks, each back-end can override the
+ can_output_mi_thunk/output_mi_thunk target hooks to generate a minimal thunk
+ (with a tail call for instance) directly as assembly. For the default hook
+ or for the case where the can_output_mi_thunk hooks return false, the thunk
+ is gimplified and lowered using the regular machinery. */
struct GTY(()) cgraph_thunk_info {
- /* Information about the thunk. */
+ /* Offset used to adjust "this". */
HOST_WIDE_INT fixed_offset;
+
+ /* Offset in the virtual table to get the offset to adjust "this". Valid iff
+ VIRTUAL_OFFSET_P is true. */
HOST_WIDE_INT virtual_value;
+
+ /* Thunk target, i.e. the method that this thunk wraps. Depending on the
+ TARGET_USE_LOCAL_THUNK_ALIAS_P macro, this may have to be a new alias. */
tree alias;
+
+ /* Nonzero for a "this" adjusting thunk and zero for a result adjusting
+ thunk. */
bool this_adjusting;
+
+ /* If true, this thunk is what we call a virtual thunk. In this case:
+ * for this-adjusting thunks, after the FIXED_OFFSET based adjustment is
+ done, add to the result the offset found in the vtable at:
+ vptr + VIRTUAL_VALUE
+ * for result-adjusting thunks, the FIXED_OFFSET adjustment is done after
+ the virtual one. */
bool virtual_offset_p;
+
+ /* ??? True for special kind of thunks, seems related to instrumentation. */
bool add_pointer_bounds_args;
- /* Set to true when alias node is thunk. */
+
+ /* Set to true when alias node (the cgraph_node to which this struct belong)
+ is a thunk. Access to any other fields is invalid if this is false. */
bool thunk_p;
};
All hooks will see this in node's global.inlined_to, when invoked.
Can be NULL if the node is not inlined. SUFFIX is string that is appended
to the original name. */
- cgraph_node *create_clone (tree decl, gcov_type count, int freq,
+ cgraph_node *create_clone (tree decl, profile_count count,
bool update_original,
vec<cgraph_edge *> redirect_callers,
bool call_duplication_hook,
/* Add thunk alias into callgraph. The alias declaration is ALIAS and it
aliases DECL with an adjustments made into the first parameter.
- See comments in thunk_adjust for detail on the parameters. */
+ See comments in struct cgraph_thunk_info for detail on the parameters. */
cgraph_node * create_thunk (tree alias, tree, bool this_adjusting,
HOST_WIDE_INT fixed_offset,
HOST_WIDE_INT virtual_value,
/* Create edge from a given function to CALLEE in the cgraph. */
cgraph_edge *create_edge (cgraph_node *callee,
- gcall *call_stmt, gcov_type count,
- int freq);
+ gcall *call_stmt, profile_count count);
/* Create an indirect edge with a yet-undetermined callee where the call
statement destination is a formal parameter of the caller with index
PARAM_INDEX. */
cgraph_edge *create_indirect_edge (gcall *call_stmt, int ecf_flags,
- gcov_type count, int freq,
+ profile_count count,
bool compute_indirect_info = true);
/* Like cgraph_create_edge walk the clone tree and update all clones sharing
update the edge same way as cgraph_set_call_stmt_including_clones does. */
void create_edge_including_clones (cgraph_node *callee,
gimple *old_stmt, gcall *stmt,
- gcov_type count,
- int freq,
+ profile_count count,
cgraph_inline_failed_t reason);
/* Return the callgraph edge representing the GIMPLE_CALL statement
if any to NOTHROW. */
bool set_nothrow_flag (bool nothrow);
+ /* SET DECL_IS_MALLOC on cgraph_node's decl and on aliases of the node
+ if any. */
+ bool set_malloc_flag (bool malloc_p);
+
/* If SET_CONST is true, mark function, aliases and thunks to be ECF_CONST.
If SET_CONST if false, clear the flag.
/* Remove the cgraph_function_version_info and cgraph_node for DECL. This
DECL is a duplicate declaration. */
- static void delete_function_version (tree decl);
+ static void delete_function_version_by_decl (tree decl);
/* Add the function FNDECL to the call graph.
Unlike finalize_function, this function is intended to be used
cgraph_thunk_info thunk;
/* Expected number of executions: calculated in profile.c. */
- gcov_type count;
+ profile_count count;
/* How to scale counts at materialization time; used to merge
LTO units with different number of profile runs. */
int count_materialization_scale;
/* Turn edge into speculative call calling N2. Update
the profile so the direct call is taken COUNT times
with FREQUENCY. */
- cgraph_edge *make_speculative (cgraph_node *n2, gcov_type direct_count,
- int direct_frequency);
+ cgraph_edge *make_speculative (cgraph_node *n2, profile_count direct_count);
/* Given speculative call edge, return all three components. */
void speculative_call_info (cgraph_edge *&direct, cgraph_edge *&indirect,
/* Create clone of edge in the node N represented
by CALL_EXPR the callgraph. */
cgraph_edge * clone (cgraph_node *n, gcall *call_stmt, unsigned stmt_uid,
- gcov_type count_scale, int freq_scale, bool update_original);
+ profile_count num, profile_count den,
+ bool update_original);
/* Verify edge count and frequency. */
- bool verify_count_and_frequency ();
+ bool verify_count ();
/* Return true when call of edge can not lead to return from caller
and thus it is safe to ignore its side effects for IPA analysis
static void rebuild_references (void);
/* Expected number of executions: calculated in profile.c. */
- gcov_type count;
+ profile_count count;
cgraph_node *caller;
cgraph_node *callee;
cgraph_edge *prev_caller;
/* The stmt_uid of call_stmt. This is used by LTO to recover the call_stmt
when the function is serialized in. */
unsigned int lto_stmt_uid;
- /* 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;
/* Unique id of the edge. */
int uid;
/* Whether this edge was made direct by indirect inlining. */
/* Return true if call must bind to current definition. */
bool binds_to_current_def_p ();
+ /* 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 ();
+
+ /* Expected frequency of executions within the function. */
+ sreal sreal_frequency ();
private:
/* Remove the edge from the list of the callers of the callee. */
void remove_caller (void);
parameters of which only CALLEE can be NULL (when creating an indirect call
edge). */
cgraph_edge *create_edge (cgraph_node *caller, cgraph_node *callee,
- gcall *call_stmt, gcov_type count, int freq,
+ gcall *call_stmt, profile_count count,
bool indir_unknown_callee);
/* Put the edge onto the free list. */
/* Initialize datastructures so DECL is a function in lowered gimple form.
IN_SSA is true if the gimple is in SSA. */
-basic_block init_lowered_empty_function (tree, bool, gcov_type);
+basic_block init_lowered_empty_function (tree, bool, profile_count);
tree thunk_adjust (gimple_stmt_iterator *, tree, bool, HOST_WIDE_INT, tree);
/* In cgraphclones.c */
return false;
}
+/* 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. */
+
+inline int
+cgraph_edge::frequency ()
+{
+ return count.to_cgraph_frequency (caller->global.inlined_to
+ ? caller->global.inlined_to->count
+ : caller->count);
+}
+
+
/* Return true if the TM_CLONE bit is set for a given FNDECL. */
static inline bool
decl_is_tm_clone (const_tree fndecl)
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