#include "rtl.h"
#include "ipa-utils.h"
#include "lto-streamer.h"
+#include "ipa-inline.h"
+
+const char * const ld_plugin_symbol_resolution_names[]=
+{
+ "",
+ "undef",
+ "prevailing_def",
+ "prevailing_def_ironly",
+ "preempted_reg",
+ "preempted_ir",
+ "resolved_ir",
+ "resolved_exec",
+ "resolved_dyn"
+};
static void cgraph_node_remove_callers (struct cgraph_node *node);
static inline void cgraph_edge_remove_caller (struct cgraph_edge *e);
/* Maximal uid used in cgraph edges. */
int cgraph_edge_max_uid;
-/* Maximal pid used for profiling */
-int cgraph_max_pid;
-
/* Set when whole unit has been analyzed so we can access global info. */
bool cgraph_global_info_ready = false;
them, to support -fno-toplevel-reorder. */
int cgraph_order;
-/* List of hooks trigerred on cgraph_edge events. */
+/* List of hooks triggered on cgraph_edge events. */
struct cgraph_edge_hook_list {
cgraph_edge_hook hook;
void *data;
struct cgraph_edge_hook_list *next;
};
-/* List of hooks trigerred on cgraph_node events. */
+/* List of hooks triggered on cgraph_node events. */
struct cgraph_node_hook_list {
cgraph_node_hook hook;
void *data;
struct cgraph_node_hook_list *next;
};
-/* List of hooks trigerred on events involving two cgraph_edges. */
+/* List of hooks triggered on events involving two cgraph_edges. */
struct cgraph_2edge_hook_list {
cgraph_2edge_hook hook;
void *data;
struct cgraph_2edge_hook_list *next;
};
-/* List of hooks trigerred on events involving two cgraph_nodes. */
+/* List of hooks triggered on events involving two cgraph_nodes. */
struct cgraph_2node_hook_list {
cgraph_2node_hook hook;
void *data;
/* Allocate new callgraph node and insert it into basic data structures. */
static struct cgraph_node *
-cgraph_create_node (void)
+cgraph_create_node_1 (void)
{
struct cgraph_node *node = cgraph_allocate_node ();
node->next = cgraph_nodes;
- node->pid = -1;
node->order = cgraph_order++;
if (cgraph_nodes)
cgraph_nodes->previous = node;
node->previous = NULL;
- node->global.estimated_growth = INT_MIN;
node->frequency = NODE_FREQUENCY_NORMAL;
+ node->count_materialization_scale = REG_BR_PROB_BASE;
ipa_empty_ref_list (&node->ref_list);
cgraph_nodes = node;
cgraph_n_nodes++;
/* Return cgraph node assigned to DECL. Create new one when needed. */
struct cgraph_node *
-cgraph_node (tree decl)
+cgraph_create_node (tree decl)
{
struct cgraph_node key, *node, **slot;
cgraph_hash = htab_create_ggc (10, hash_node, eq_node, NULL);
key.decl = decl;
-
slot = (struct cgraph_node **) htab_find_slot (cgraph_hash, &key, INSERT);
+ gcc_assert (!*slot);
- if (*slot)
- {
- node = *slot;
- if (node->same_body_alias)
- node = node->same_body;
- return node;
- }
-
- node = cgraph_create_node ();
+ node = cgraph_create_node_1 ();
node->decl = decl;
*slot = node;
if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == FUNCTION_DECL)
{
- node->origin = cgraph_node (DECL_CONTEXT (decl));
+ node->origin = cgraph_get_create_node (DECL_CONTEXT (decl));
node->next_nested = node->origin->nested;
node->origin->nested = node;
}
return node;
}
-/* Mark ALIAS as an alias to DECL. */
+/* Try to find a call graph node for declaration DECL and if it does not exist,
+ create it. */
+
+struct cgraph_node *
+cgraph_get_create_node (tree decl)
+{
+ struct cgraph_node *node;
+
+ node = cgraph_get_node (decl);
+ if (node)
+ return node;
+
+ return cgraph_create_node (decl);
+}
+
+/* Mark ALIAS as an alias to DECL. DECL_NODE is cgraph node representing
+ the function body is associated with (not neccesarily cgraph_node (DECL). */
static struct cgraph_node *
-cgraph_same_body_alias_1 (tree alias, tree decl)
+cgraph_same_body_alias_1 (struct cgraph_node *decl_node, tree alias, tree decl)
{
- struct cgraph_node key, *alias_node, *decl_node, **slot;
+ struct cgraph_node key, *alias_node, **slot;
gcc_assert (TREE_CODE (decl) == FUNCTION_DECL);
gcc_assert (TREE_CODE (alias) == FUNCTION_DECL);
- decl_node = cgraph_node (decl);
key.decl = alias;
}
/* Attempt to mark ALIAS as an alias to DECL. Return alias node if successful
- and NULL otherwise.
+ and NULL otherwise.
Same body aliases are output whenever the body of DECL is output,
- and cgraph_node (ALIAS) transparently returns cgraph_node (DECL). */
+ and cgraph_get_node (ALIAS) transparently returns cgraph_get_node (DECL). */
struct cgraph_node *
-cgraph_same_body_alias (tree alias, tree decl)
+cgraph_same_body_alias (struct cgraph_node *decl_node, tree alias, tree decl)
{
#ifndef ASM_OUTPUT_DEF
/* If aliases aren't supported by the assembler, fail. */
/*gcc_assert (!assembler_name_hash);*/
- return cgraph_same_body_alias_1 (alias, decl);
+ return cgraph_same_body_alias_1 (decl_node, alias, decl);
}
/* Add thunk alias into callgraph. The alias declaration is ALIAS and it
- alises DECL with an adjustments made into the first parameter.
+ aliases DECL with an adjustments made into the first parameter.
See comments in thunk_adjust for detail on the parameters. */
struct cgraph_node *
-cgraph_add_thunk (tree alias, tree decl, bool this_adjusting,
+cgraph_add_thunk (struct cgraph_node *decl_node, tree alias, tree decl,
+ bool this_adjusting,
HOST_WIDE_INT fixed_offset, HOST_WIDE_INT virtual_value,
tree virtual_offset,
tree real_alias)
cgraph_remove_node (node);
}
- node = cgraph_same_body_alias_1 (alias, decl);
+ node = cgraph_same_body_alias_1 (decl_node, alias, decl);
gcc_assert (node);
-#ifdef ENABLE_CHECKING
- gcc_assert (!virtual_offset
- || tree_int_cst_equal (virtual_offset, size_int (virtual_value)));
-#endif
+ gcc_checking_assert (!virtual_offset
+ || double_int_equal_p
+ (tree_to_double_int (virtual_offset),
+ shwi_to_double_int (virtual_value)));
node->thunk.fixed_offset = fixed_offset;
node->thunk.this_adjusting = this_adjusting;
node->thunk.virtual_value = virtual_value;
{
/* Constant propagation (and possibly also inlining?) can turn an
indirect call into a direct one. */
- struct cgraph_node *new_callee = cgraph_node (decl);
+ struct cgraph_node *new_callee = cgraph_get_node (decl);
- cgraph_make_edge_direct (e, new_callee);
+ gcc_checking_assert (new_callee);
+ cgraph_make_edge_direct (e, new_callee, 0);
}
push_cfun (DECL_STRUCT_FUNCTION (e->caller->decl));
struct cgraph_node *callee,
gimple old_stmt,
gimple stmt, gcov_type count,
- int freq, int loop_depth,
+ int freq,
cgraph_inline_failed_t reason)
{
struct cgraph_node *node;
if (!cgraph_edge (orig, stmt))
{
- edge = cgraph_create_edge (orig, callee, stmt, count, freq, loop_depth);
+ edge = cgraph_create_edge (orig, callee, stmt, count, freq);
edge->inline_failed = reason;
}
/* It is possible that clones already contain the edge while
master didn't. Either we promoted indirect call into direct
call in the clone or we are processing clones of unreachable
- master where edges has been rmeoved. */
+ master where edges has been removed. */
if (edge)
cgraph_set_call_stmt (edge, stmt);
else if (!cgraph_edge (node, stmt))
{
edge = cgraph_create_edge (node, callee, stmt, count,
- freq, loop_depth);
+ freq);
edge->inline_failed = reason;
}
}
}
-/* Give initial reasons why inlining would fail on EDGE. This gets either
- nullified or usually overwritten by more precise reasons later. */
-
-static void
-initialize_inline_failed (struct cgraph_edge *e)
-{
- struct cgraph_node *callee = e->callee;
-
- if (e->indirect_unknown_callee)
- e->inline_failed = CIF_INDIRECT_UNKNOWN_CALL;
- else if (!callee->analyzed)
- e->inline_failed = CIF_BODY_NOT_AVAILABLE;
- else if (callee->local.redefined_extern_inline)
- e->inline_failed = CIF_REDEFINED_EXTERN_INLINE;
- else if (!callee->local.inlinable)
- e->inline_failed = CIF_FUNCTION_NOT_INLINABLE;
- else if (e->call_stmt && gimple_call_cannot_inline_p (e->call_stmt))
- e->inline_failed = CIF_MISMATCHED_ARGUMENTS;
- else
- e->inline_failed = CIF_FUNCTION_NOT_CONSIDERED;
-}
-
/* Allocate a cgraph_edge structure and fill it with data according to the
parameters of which only CALLEE can be NULL (when creating an indirect call
edge). */
static struct cgraph_edge *
cgraph_create_edge_1 (struct cgraph_node *caller, struct cgraph_node *callee,
- gimple call_stmt, gcov_type count, int freq, int nest)
+ gimple call_stmt, gcov_type count, int freq)
{
struct cgraph_edge *edge;
have not been loaded yet. */
if (call_stmt)
{
-#ifdef ENABLE_CHECKING
- /* This is rather pricely check possibly trigerring construction of
- call stmt hashtable. */
- gcc_assert (!cgraph_edge (caller, call_stmt));
-#endif
+ /* This is a rather expensive check possibly triggering
+ construction of call stmt hashtable. */
+ gcc_checking_assert (!cgraph_edge (caller, call_stmt));
gcc_assert (is_gimple_call (call_stmt));
}
edge->frequency = freq;
gcc_assert (freq >= 0);
gcc_assert (freq <= CGRAPH_FREQ_MAX);
- edge->loop_nest = nest;
edge->call_stmt = call_stmt;
push_cfun (DECL_STRUCT_FUNCTION (caller->decl));
struct cgraph_edge *
cgraph_create_edge (struct cgraph_node *caller, struct cgraph_node *callee,
- gimple call_stmt, gcov_type count, int freq, int nest)
+ gimple call_stmt, gcov_type count, int freq)
{
struct cgraph_edge *edge = cgraph_create_edge_1 (caller, callee, call_stmt,
- count, freq, nest);
+ count, freq);
edge->indirect_unknown_callee = 0;
initialize_inline_failed (edge);
return edge;
}
+/* Allocate cgraph_indirect_call_info and set its fields to default values. */
+
+struct cgraph_indirect_call_info *
+cgraph_allocate_init_indirect_info (void)
+{
+ struct cgraph_indirect_call_info *ii;
+
+ ii = ggc_alloc_cleared_cgraph_indirect_call_info ();
+ ii->param_index = -1;
+ return ii;
+}
/* Create an indirect edge with a yet-undetermined callee where the call
statement destination is a formal parameter of the caller with index
struct cgraph_edge *
cgraph_create_indirect_edge (struct cgraph_node *caller, gimple call_stmt,
int ecf_flags,
- gcov_type count, int freq, int nest)
+ gcov_type count, int freq)
{
struct cgraph_edge *edge = cgraph_create_edge_1 (caller, NULL, call_stmt,
- count, freq, nest);
+ count, freq);
edge->indirect_unknown_callee = 1;
initialize_inline_failed (edge);
- edge->indirect_info = ggc_alloc_cleared_cgraph_indirect_call_info ();
- edge->indirect_info->param_index = -1;
+ edge->indirect_info = cgraph_allocate_init_indirect_info ();
edge->indirect_info->ecf_flags = ecf_flags;
edge->next_callee = caller->indirect_calls;
}
/* Make an indirect EDGE with an unknown callee an ordinary edge leading to
- CALLEE. */
+ CALLEE. DELTA is an integer constant that is to be added to the this
+ pointer (first parameter) to compensate for skipping a thunk adjustment. */
void
-cgraph_make_edge_direct (struct cgraph_edge *edge, struct cgraph_node *callee)
+cgraph_make_edge_direct (struct cgraph_edge *edge, struct cgraph_node *callee,
+ HOST_WIDE_INT delta)
{
edge->indirect_unknown_callee = 0;
+ edge->indirect_info->thunk_delta = delta;
/* Get the edge out of the indirect edge list. */
if (edge->prev_callee)
if (!new_call && !old_call)
return;
/* See if we turned indirect call into direct call or folded call to one builtin
- into different bultin. */
+ into different builtin. */
if (old_call != new_call)
{
struct cgraph_edge *e = cgraph_edge (node, old_stmt);
struct cgraph_edge *ne = NULL;
gcov_type count;
int frequency;
- int loop_nest;
if (e)
{
/* See if the edge is already there and has the correct callee. It
might be so because of indirect inlining has already updated
- it. */
- if (new_call && e->callee && e->callee->decl == new_call)
- return;
+ it. We also might've cloned and redirected the edge. */
+ if (new_call && e->callee)
+ {
+ struct cgraph_node *callee = e->callee;
+ while (callee)
+ {
+ if (callee->decl == new_call
+ || callee->former_clone_of == new_call)
+ return;
+ callee = callee->clone_of;
+ }
+ }
/* Otherwise remove edge and create new one; we can't simply redirect
since function has changed, so inline plan and other information
attached to edge is invalid. */
count = e->count;
frequency = e->frequency;
- loop_nest = e->loop_nest;
cgraph_remove_edge (e);
}
else
count = bb->count;
frequency = compute_call_stmt_bb_frequency (current_function_decl,
bb);
- loop_nest = bb->loop_depth;
}
if (new_call)
{
- ne = cgraph_create_edge (node, cgraph_node (new_call),
- new_stmt, count, frequency,
- loop_nest);
+ ne = cgraph_create_edge (node, cgraph_get_create_node (new_call),
+ new_stmt, count, frequency);
gcc_assert (ne->inline_failed);
}
}
void
cgraph_update_edges_for_call_stmt (gimple old_stmt, tree old_decl, gimple new_stmt)
{
- struct cgraph_node *orig = cgraph_node (cfun->decl);
+ struct cgraph_node *orig = cgraph_get_node (cfun->decl);
struct cgraph_node *node;
+ gcc_checking_assert (orig);
cgraph_update_edges_for_call_stmt_node (orig, old_stmt, old_decl, new_stmt);
if (orig->clones)
for (node = orig->clones; node != orig;)
void
cgraph_mark_address_taken_node (struct cgraph_node *node)
{
+ gcc_assert (!node->global.inlined_to);
cgraph_mark_reachable_node (node);
node->address_taken = 1;
}
struct cgraph_node *node;
gcc_assert (TREE_CODE (decl) == FUNCTION_DECL);
- node = cgraph_node (decl);
+ node = cgraph_get_node (decl);
+ if (!node)
+ return NULL;
return &node->local;
}
struct cgraph_node *node;
gcc_assert (TREE_CODE (decl) == FUNCTION_DECL && cgraph_global_info_ready);
- node = cgraph_node (decl);
+ node = cgraph_get_node (decl);
+ if (!node)
+ return NULL;
return &node->global;
}
struct cgraph_node *node;
gcc_assert (TREE_CODE (decl) == FUNCTION_DECL);
- node = cgraph_node (decl);
- if (decl != current_function_decl
- && !TREE_ASM_WRITTEN (node->decl))
+ node = cgraph_get_node (decl);
+ if (!node
+ || (decl != current_function_decl
+ && !TREE_ASM_WRITTEN (node->decl)))
return NULL;
return &node->rtl;
}
struct cgraph_edge *edge;
int indirect_calls_count = 0;
- fprintf (f, "%s/%i(%i)", cgraph_node_name (node), node->uid,
- node->pid);
+ fprintf (f, "%s/%i", cgraph_node_name (node), node->uid);
dump_addr (f, " @", (void *)node);
if (DECL_ASSEMBLER_NAME_SET_P (node->decl))
fprintf (f, " (asm: %s)", IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (node->decl)));
fprintf (f, " (inline copy in %s/%i)",
cgraph_node_name (node->global.inlined_to),
node->global.inlined_to->uid);
+ if (node->same_comdat_group)
+ fprintf (f, " (same comdat group as %s/%i)",
+ cgraph_node_name (node->same_comdat_group),
+ node->same_comdat_group->uid);
if (node->clone_of)
fprintf (f, " (clone of %s/%i)",
cgraph_node_name (node->clone_of),
if (node->count)
fprintf (f, " executed "HOST_WIDEST_INT_PRINT_DEC"x",
(HOST_WIDEST_INT)node->count);
- if (node->local.inline_summary.self_time)
- fprintf (f, " %i time, %i benefit", node->local.inline_summary.self_time,
- node->local.inline_summary.time_inlining_benefit);
- if (node->global.time && node->global.time
- != node->local.inline_summary.self_time)
- fprintf (f, " (%i after inlining)", node->global.time);
- if (node->local.inline_summary.self_size)
- fprintf (f, " %i size, %i benefit", node->local.inline_summary.self_size,
- node->local.inline_summary.size_inlining_benefit);
- if (node->global.size && node->global.size
- != node->local.inline_summary.self_size)
- fprintf (f, " (%i after inlining)", node->global.size);
- if (node->local.inline_summary.estimated_self_stack_size)
- fprintf (f, " %i bytes stack usage", (int)node->local.inline_summary.estimated_self_stack_size);
- if (node->global.estimated_stack_size != node->local.inline_summary.estimated_self_stack_size)
- fprintf (f, " %i bytes after inlining", (int)node->global.estimated_stack_size);
if (node->origin)
fprintf (f, " nested in: %s", cgraph_node_name (node->origin));
if (node->needed)
fprintf (f, " local");
if (node->local.externally_visible)
fprintf (f, " externally_visible");
+ if (node->resolution != LDPR_UNKNOWN)
+ fprintf (f, " %s",
+ ld_plugin_symbol_resolution_names[(int)node->resolution]);
if (node->local.finalized)
fprintf (f, " finalized");
- if (node->local.disregard_inline_limits)
- fprintf (f, " always_inline");
- else if (node->local.inlinable)
- fprintf (f, " inlinable");
- else if (node->local.versionable)
- fprintf (f, " versionable");
if (node->local.redefined_extern_inline)
fprintf (f, " redefined_extern_inline");
if (TREE_ASM_WRITTEN (node->decl))
fprintf (f, " asm_written");
+ if (node->only_called_at_startup)
+ fprintf (f, " only_called_at_startup");
+ if (node->only_called_at_exit)
+ fprintf (f, " only_called_at_exit");
fprintf (f, "\n called by: ");
for (edge = node->callers; edge; edge = edge->next_caller)
if (edge->frequency)
fprintf (f, "(%.2f per call) ",
edge->frequency / (double)CGRAPH_FREQ_BASE);
- if (edge->loop_nest)
- fprintf (f, "(nested in %i loops) ", edge->loop_nest);
if (edge->can_throw_external)
fprintf(f, "(can throw external) ");
}
fprintf (f, " %s/%i", cgraph_node_name (n), n->uid);
if (n->thunk.thunk_p)
{
- fprintf (f, " (thunk of %s fixed ofset %i virtual value %i has "
+ fprintf (f, " (thunk of %s fixed offset %i virtual value %i has "
"virtual offset %i",
lang_hooks.decl_printable_name (n->thunk.alias, 2),
(int)n->thunk.fixed_offset,
struct cgraph_edge *
cgraph_clone_edge (struct cgraph_edge *e, struct cgraph_node *n,
gimple call_stmt, unsigned stmt_uid, gcov_type count_scale,
- int freq_scale, int loop_nest, bool update_original)
+ int freq_scale, bool update_original)
{
struct cgraph_edge *new_edge;
gcov_type count = e->count * count_scale / REG_BR_PROB_BASE;
if (call_stmt && (decl = gimple_call_fndecl (call_stmt)))
{
- struct cgraph_node *callee = cgraph_node (decl);
- new_edge = cgraph_create_edge (n, callee, call_stmt, count, freq,
- e->loop_nest + loop_nest);
+ struct cgraph_node *callee = cgraph_get_node (decl);
+ gcc_checking_assert (callee);
+ new_edge = cgraph_create_edge (n, callee, call_stmt, count, freq);
}
else
{
new_edge = cgraph_create_indirect_edge (n, call_stmt,
e->indirect_info->ecf_flags,
- count, freq,
- e->loop_nest + loop_nest);
+ count, freq);
*new_edge->indirect_info = *e->indirect_info;
}
}
else
- new_edge = cgraph_create_edge (n, e->callee, call_stmt, count, freq,
- e->loop_nest + loop_nest);
+ {
+ new_edge = cgraph_create_edge (n, e->callee, call_stmt, count, freq);
+ if (e->indirect_info)
+ {
+ new_edge->indirect_info
+ = ggc_alloc_cleared_cgraph_indirect_call_info ();
+ *new_edge->indirect_info = *e->indirect_info;
+ }
+ }
new_edge->inline_failed = e->inline_failed;
new_edge->indirect_inlining_edge = e->indirect_inlining_edge;
new_edge->lto_stmt_uid = stmt_uid;
+ /* Clone flags that depend on call_stmt availability manually. */
+ new_edge->can_throw_external = e->can_throw_external;
+ new_edge->call_stmt_cannot_inline_p = e->call_stmt_cannot_inline_p;
if (update_original)
{
e->count -= new_edge->count;
by node. */
struct cgraph_node *
cgraph_clone_node (struct cgraph_node *n, tree decl, gcov_type count, int freq,
- int loop_nest, bool update_original,
+ bool update_original,
VEC(cgraph_edge_p,heap) *redirect_callers)
{
- struct cgraph_node *new_node = cgraph_create_node ();
+ struct cgraph_node *new_node = cgraph_create_node_1 ();
struct cgraph_edge *e;
gcov_type count_scale;
unsigned i;
new_node->local = n->local;
new_node->local.externally_visible = false;
new_node->local.local = true;
- new_node->local.vtable_method = false;
new_node->global = n->global;
new_node->rtl = n->rtl;
new_node->count = count;
for (e = n->callees;e; e=e->next_callee)
cgraph_clone_edge (e, new_node, e->call_stmt, e->lto_stmt_uid,
- count_scale, freq, loop_nest, update_original);
+ count_scale, freq, update_original);
for (e = n->indirect_calls; e; e = e->next_callee)
cgraph_clone_edge (e, new_node, e->call_stmt, e->lto_stmt_uid,
- count_scale, freq, loop_nest, update_original);
+ count_scale, freq, update_original);
ipa_clone_references (new_node, NULL, &n->ref_list);
new_node->next_sibling_clone = n->clones;
size_t i;
struct ipa_replace_map *map;
-#ifdef ENABLE_CHECKING
if (!flag_wpa)
- gcc_assert (tree_versionable_function_p (old_decl));
-#endif
+ gcc_checking_assert (tree_versionable_function_p (old_decl));
+
+ gcc_assert (old_node->local.can_change_signature || !args_to_skip);
/* Make a new FUNCTION_DECL tree node */
if (!args_to_skip)
SET_DECL_RTL (new_decl, NULL);
new_node = cgraph_clone_node (old_node, new_decl, old_node->count,
- CGRAPH_FREQ_BASE, 0, false,
+ CGRAPH_FREQ_BASE, false,
redirect_callers);
/* Update the properties.
Make clone visible only within this translation unit. Make sure
TREE_PUBLIC (new_node->decl) = 0;
DECL_COMDAT (new_node->decl) = 0;
DECL_WEAK (new_node->decl) = 0;
+ DECL_STATIC_CONSTRUCTOR (new_node->decl) = 0;
+ DECL_STATIC_DESTRUCTOR (new_node->decl) = 0;
new_node->clone.tree_map = tree_map;
new_node->clone.args_to_skip = args_to_skip;
FOR_EACH_VEC_ELT (ipa_replace_map_p, tree_map, i, map)
/* Record references of the future statement initializing the constant
argument. */
if (TREE_CODE (var) == FUNCTION_DECL)
- ipa_record_reference (new_node, NULL, cgraph_node (var),
- NULL, IPA_REF_ADDR, NULL);
+ {
+ struct cgraph_node *ref_node = cgraph_get_node (var);
+ gcc_checking_assert (ref_node);
+ ipa_record_reference (new_node, NULL, ref_node, NULL, IPA_REF_ADDR,
+ NULL);
+ }
else if (TREE_CODE (var) == VAR_DECL)
ipa_record_reference (new_node, NULL, NULL, varpool_node (var),
IPA_REF_ADDR, NULL);
avail = AVAIL_LOCAL;
else if (!node->local.externally_visible)
avail = AVAIL_AVAILABLE;
- /* Inline functions are safe to be analyzed even if their sybol can
- be overwritten at runtime. It is not meaningful to enfore any sane
+ /* Inline functions are safe to be analyzed even if their symbol can
+ be overwritten at runtime. It is not meaningful to enforce any sane
behaviour on replacing inline function by different body. */
else if (DECL_DECLARED_INLINE_P (node->decl))
avail = AVAIL_AVAILABLE;
{
case CGRAPH_STATE_CONSTRUCTION:
/* Just enqueue function to be processed at nearest occurrence. */
- node = cgraph_node (fndecl);
+ node = cgraph_create_node (fndecl);
node->next_needed = cgraph_new_nodes;
if (lowered)
node->lowered = true;
case CGRAPH_STATE_EXPANSION:
/* Bring the function into finalized state and enqueue for later
analyzing and compilation. */
- node = cgraph_node (fndecl);
+ node = cgraph_get_create_node (fndecl);
node->local.local = false;
node->local.finalized = true;
node->reachable = node->needed = true;
case CGRAPH_STATE_FINISHED:
/* At the very end of compilation we have to do all the work up
to expansion. */
+ node = cgraph_create_node (fndecl);
+ if (lowered)
+ node->lowered = true;
+ cgraph_analyze_function (node);
push_cfun (DECL_STRUCT_FUNCTION (fndecl));
current_function_decl = fndecl;
gimple_register_cfg_hooks ();
- if (!lowered)
- tree_lowering_passes (fndecl);
bitmap_obstack_initialize (NULL);
if (!gimple_in_ssa_p (DECL_STRUCT_FUNCTION (fndecl)))
execute_pass_list (pass_early_local_passes.pass.sub);
if any to READONLY. */
void
-cgraph_set_readonly_flag (struct cgraph_node *node, bool readonly)
+cgraph_set_const_flag (struct cgraph_node *node, bool readonly, bool looping)
{
struct cgraph_node *alias;
+ /* Static constructors and destructors without a side effect can be
+ optimized out. */
+ if (!looping && readonly)
+ {
+ if (DECL_STATIC_CONSTRUCTOR (node->decl))
+ DECL_STATIC_CONSTRUCTOR (node->decl) = 0;
+ if (DECL_STATIC_DESTRUCTOR (node->decl))
+ DECL_STATIC_DESTRUCTOR (node->decl) = 0;
+ }
TREE_READONLY (node->decl) = readonly;
+ DECL_LOOPING_CONST_OR_PURE_P (node->decl) = looping;
for (alias = node->same_body; alias; alias = alias->next)
- TREE_READONLY (alias->decl) = readonly;
+ {
+ TREE_READONLY (alias->decl) = readonly;
+ DECL_LOOPING_CONST_OR_PURE_P (alias->decl) = looping;
+ }
}
/* Set DECL_PURE_P on NODE's decl and on same_body aliases of NODE
if any to PURE. */
void
-cgraph_set_pure_flag (struct cgraph_node *node, bool pure)
+cgraph_set_pure_flag (struct cgraph_node *node, bool pure, bool looping)
{
struct cgraph_node *alias;
+ /* Static constructors and destructors without a side effect can be
+ optimized out. */
+ if (!looping && pure)
+ {
+ if (DECL_STATIC_CONSTRUCTOR (node->decl))
+ DECL_STATIC_CONSTRUCTOR (node->decl) = 0;
+ if (DECL_STATIC_DESTRUCTOR (node->decl))
+ DECL_STATIC_DESTRUCTOR (node->decl) = 0;
+ }
DECL_PURE_P (node->decl) = pure;
+ DECL_LOOPING_CONST_OR_PURE_P (node->decl) = looping;
for (alias = node->same_body; alias; alias = alias->next)
- DECL_PURE_P (alias->decl) = pure;
-}
-
-/* Set DECL_LOOPING_CONST_OR_PURE_P on NODE's decl and on
- same_body aliases of NODE if any to LOOPING_CONST_OR_PURE. */
-
-void
-cgraph_set_looping_const_or_pure_flag (struct cgraph_node *node,
- bool looping_const_or_pure)
-{
- struct cgraph_node *alias;
- DECL_LOOPING_CONST_OR_PURE_P (node->decl) = looping_const_or_pure;
- for (alias = node->same_body; alias; alias = alias->next)
- DECL_LOOPING_CONST_OR_PURE_P (alias->decl) = looping_const_or_pure;
+ {
+ DECL_PURE_P (alias->decl) = pure;
+ DECL_LOOPING_CONST_OR_PURE_P (alias->decl) = looping;
+ }
}
/* See if the frequency of NODE can be updated based on frequencies of its
cgraph_propagate_frequency (struct cgraph_node *node)
{
bool maybe_unlikely_executed = true, maybe_executed_once = true;
+ bool only_called_at_startup = true;
+ bool only_called_at_exit = true;
+ bool changed = false;
struct cgraph_edge *edge;
+
if (!node->local.local)
return false;
gcc_assert (node->analyzed);
- if (node->frequency == NODE_FREQUENCY_HOT)
- return false;
- if (node->frequency == NODE_FREQUENCY_UNLIKELY_EXECUTED)
- return false;
if (dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file, "Processing frequency %s\n", cgraph_node_name (node));
+
for (edge = node->callers;
- edge && (maybe_unlikely_executed || maybe_executed_once);
+ edge && (maybe_unlikely_executed || maybe_executed_once
+ || only_called_at_startup || only_called_at_exit);
edge = edge->next_caller)
{
+ if (edge->caller != node)
+ {
+ only_called_at_startup &= edge->caller->only_called_at_startup;
+ /* It makes sense to put main() together with the static constructors.
+ It will be executed for sure, but rest of functions called from
+ main are definitely not at startup only. */
+ if (MAIN_NAME_P (DECL_NAME (edge->caller->decl)))
+ only_called_at_startup = 0;
+ only_called_at_exit &= edge->caller->only_called_at_exit;
+ }
if (!edge->frequency)
continue;
switch (edge->caller->frequency)
break;
case NODE_FREQUENCY_EXECUTED_ONCE:
if (dump_file && (dump_flags & TDF_DETAILS))
- fprintf (dump_file, " Called by %s that is executed once\n", cgraph_node_name (node));
+ fprintf (dump_file, " Called by %s that is executed once\n",
+ cgraph_node_name (edge->caller));
maybe_unlikely_executed = false;
- if (edge->loop_nest)
+ if (inline_edge_summary (edge)->loop_depth)
{
maybe_executed_once = false;
if (dump_file && (dump_flags & TDF_DETAILS))
case NODE_FREQUENCY_HOT:
case NODE_FREQUENCY_NORMAL:
if (dump_file && (dump_flags & TDF_DETAILS))
- fprintf (dump_file, " Called by %s that is normal or hot\n", cgraph_node_name (node));
+ fprintf (dump_file, " Called by %s that is normal or hot\n",
+ cgraph_node_name (edge->caller));
maybe_unlikely_executed = false;
maybe_executed_once = false;
break;
}
}
- if (maybe_unlikely_executed)
- {
- node->frequency = NODE_FREQUENCY_UNLIKELY_EXECUTED;
+ if ((only_called_at_startup && !only_called_at_exit)
+ && !node->only_called_at_startup)
+ {
+ node->only_called_at_startup = true;
if (dump_file)
- fprintf (dump_file, "Node %s promoted to unlikely executed.\n", cgraph_node_name (node));
- return true;
- }
- if (maybe_executed_once && node->frequency != NODE_FREQUENCY_EXECUTED_ONCE)
- {
- node->frequency = NODE_FREQUENCY_EXECUTED_ONCE;
+ fprintf (dump_file, "Node %s promoted to only called at startup.\n",
+ cgraph_node_name (node));
+ changed = true;
+ }
+ if ((only_called_at_exit && !only_called_at_startup)
+ && !node->only_called_at_exit)
+ {
+ node->only_called_at_exit = true;
if (dump_file)
- fprintf (dump_file, "Node %s promoted to executed once.\n", cgraph_node_name (node));
- return true;
- }
- return false;
+ fprintf (dump_file, "Node %s promoted to only called at exit.\n",
+ cgraph_node_name (node));
+ changed = true;
+ }
+ /* These come either from profile or user hints; never update them. */
+ if (node->frequency == NODE_FREQUENCY_HOT
+ || node->frequency == NODE_FREQUENCY_UNLIKELY_EXECUTED)
+ return changed;
+ if (maybe_unlikely_executed)
+ {
+ node->frequency = NODE_FREQUENCY_UNLIKELY_EXECUTED;
+ if (dump_file)
+ fprintf (dump_file, "Node %s promoted to unlikely executed.\n",
+ cgraph_node_name (node));
+ changed = true;
+ }
+ else if (maybe_executed_once && node->frequency != NODE_FREQUENCY_EXECUTED_ONCE)
+ {
+ node->frequency = NODE_FREQUENCY_EXECUTED_ONCE;
+ if (dump_file)
+ fprintf (dump_file, "Node %s promoted to executed once.\n",
+ cgraph_node_name (node));
+ changed = true;
+ }
+ return changed;
}
/* Return true when NODE can not return or throw and thus
bool
cgraph_can_remove_if_no_direct_calls_and_refs_p (struct cgraph_node *node)
{
+ gcc_assert (!node->global.inlined_to);
+ /* Extern inlines can always go, we will use the external definition. */
+ if (DECL_EXTERNAL (node->decl))
+ return true;
/* When function is needed, we can not remove it. */
if (node->needed || node->reachable_from_other_partition)
return false;
+ if (DECL_STATIC_CONSTRUCTOR (node->decl)
+ || DECL_STATIC_DESTRUCTOR (node->decl))
+ return false;
/* Only COMDAT functions can be removed if externally visible. */
if (node->local.externally_visible
&& (!DECL_COMDAT (node->decl)
|| cgraph_used_from_object_file_p (node)))
return false;
- /* Constructors and destructors are executed by the runtime, however
- we can get rid of all pure constructors and destructors. */
- if (DECL_STATIC_CONSTRUCTOR (node->decl)
- || DECL_STATIC_DESTRUCTOR (node->decl))
- {
- int flags = flags_from_decl_or_type (node->decl);
- if (!optimize
- || !(flags & (ECF_CONST | ECF_PURE))
- || (flags & ECF_LOOPING_CONST_OR_PURE))
- return false;
- }
return true;
}
-/* Return true when function NODE can be excpected to be removed
+/* Return true when function NODE can be expected to be removed
from program when direct calls in this compilation unit are removed.
As a special case COMDAT functions are
unit)
This function behaves as cgraph_only_called_directly_p because eliminating
- all uses of COMDAT function does not make it neccesarily disappear from
+ all uses of COMDAT function does not make it necessarily disappear from
the program unless we are compiling whole program or we do LTO. In this
case we know we win since dynamic linking will not really discard the
linkonce section. */
bool
cgraph_will_be_removed_from_program_if_no_direct_calls (struct cgraph_node *node)
{
+ gcc_assert (!node->global.inlined_to);
if (cgraph_used_from_object_file_p (node))
return false;
if (!in_lto_p && !flag_whole_program)
return cgraph_only_called_directly_p (node);
else
- return cgraph_can_remove_if_no_direct_calls_p (node);
+ {
+ if (DECL_EXTERNAL (node->decl))
+ return true;
+ return cgraph_can_remove_if_no_direct_calls_p (node);
+ }
}
/* Return true when RESOLUTION indicate that linker will use
- the symbol from non-LTo object files. */
+ the symbol from non-LTO object files. */
bool
resolution_used_from_other_file_p (enum ld_plugin_symbol_resolution resolution)
{
struct cgraph_node *alias;
- if (!TREE_PUBLIC (node->decl))
+ gcc_assert (!node->global.inlined_to);
+ if (!TREE_PUBLIC (node->decl) || DECL_EXTERNAL (node->decl))
return false;
if (resolution_used_from_other_file_p (node->resolution))
return true;
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