#include "tree-flow.h"
#include "value-prof.h"
#include "except.h"
-#include "diagnostic.h"
+#include "diagnostic-core.h"
#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;
}
else
{
- node = GGC_CNEW (struct cgraph_node);
+ node = ggc_alloc_cleared_cgraph_node ();
node->uid = cgraph_max_uid++;
}
/* 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;
return alias_node;
}
-/* Attempt to mark ALIAS as an alias to DECL. Return TRUE if successful.
+/* Attempt to mark ALIAS as an alias to DECL. Return alias node if successful
+ 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). */
-bool
-cgraph_same_body_alias (tree alias, tree decl)
+struct cgraph_node *
+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. */
- return false;
+ return NULL;
#endif
/*gcc_assert (!assembler_name_hash);*/
- return cgraph_same_body_alias_1 (alias, decl) != NULL;
+ return cgraph_same_body_alias_1 (decl_node, alias, decl);
}
-void
-cgraph_add_thunk (tree alias, tree decl, bool this_adjusting,
+/* 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. */
+
+struct cgraph_node *
+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;
node->thunk.virtual_offset_p = virtual_offset != NULL;
node->thunk.alias = real_alias;
node->thunk.thunk_p = true;
+ return node;
}
/* Returns the cgraph node assigned to DECL or NULL if no cgraph node
is assigned. */
struct cgraph_node *
-cgraph_get_node (tree decl)
+cgraph_get_node_or_alias (const_tree decl)
{
struct cgraph_node key, *node = NULL, **slot;
if (!cgraph_hash)
return NULL;
- key.decl = decl;
+ key.decl = CONST_CAST2 (tree, const_tree, decl);
+
+ slot = (struct cgraph_node **) htab_find_slot (cgraph_hash, &key,
+ NO_INSERT);
+
+ if (slot && *slot)
+ node = *slot;
+ return node;
+}
+
+/* Returns the cgraph node assigned to DECL or NULL if no cgraph node
+ is assigned. */
+
+struct cgraph_node *
+cgraph_get_node (const_tree decl)
+{
+ struct cgraph_node key, *node = NULL, **slot;
+
+ gcc_assert (TREE_CODE (decl) == FUNCTION_DECL);
+
+ if (!cgraph_hash)
+ return NULL;
+
+ key.decl = CONST_CAST2 (tree, const_tree, decl);
slot = (struct cgraph_node **) htab_find_slot (cgraph_hash, &key,
NO_INSERT);
{
/* 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));
}
}
else
{
- edge = GGC_NEW (struct cgraph_edge);
+ edge = ggc_alloc_cgraph_edge ();
edge->uid = cgraph_edge_max_uid++;
}
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_CNEW (struct 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;)
/* Verify that function does not appear to be needed out of blue
during the optimization process. This can happen for extern
inlines when bodies was removed after inlining. */
- gcc_assert ((node->analyzed || DECL_EXTERNAL (node->decl)));
+ gcc_assert ((node->analyzed || node->in_other_partition
+ || DECL_EXTERNAL (node->decl)));
}
else
notice_global_symbol (node->decl);
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,
/* Dump call graph node NODE to stderr. */
-void
+DEBUG_FUNCTION void
debug_cgraph_node (struct cgraph_node *node)
{
dump_cgraph_node (stderr, node);
/* Dump the call graph to stderr. */
-void
+DEBUG_FUNCTION void
debug_cgraph (void)
{
dump_cgraph (stderr);
void
change_decl_assembler_name (tree decl, tree name)
{
- gcc_assert (!assembler_name_hash);
+ struct cgraph_node *node;
+ void **slot;
if (!DECL_ASSEMBLER_NAME_SET_P (decl))
+ SET_DECL_ASSEMBLER_NAME (decl, name);
+ else
{
- SET_DECL_ASSEMBLER_NAME (decl, name);
- return;
- }
- if (name == DECL_ASSEMBLER_NAME (decl))
- return;
+ if (name == DECL_ASSEMBLER_NAME (decl))
+ return;
- if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))
- && DECL_RTL_SET_P (decl))
- warning (0, "%D renamed after being referenced in assembly", decl);
+ if (assembler_name_hash
+ && TREE_CODE (decl) == FUNCTION_DECL
+ && (node = cgraph_get_node_or_alias (decl)) != NULL)
+ {
+ tree old_name = DECL_ASSEMBLER_NAME (decl);
+ slot = htab_find_slot_with_hash (assembler_name_hash, old_name,
+ decl_assembler_name_hash (old_name),
+ NO_INSERT);
+ /* Inline clones are not hashed. */
+ if (slot && *slot == node)
+ htab_clear_slot (assembler_name_hash, slot);
+ }
+ if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))
+ && DECL_RTL_SET_P (decl))
+ warning (0, "%D renamed after being referenced in assembly", decl);
- SET_DECL_ASSEMBLER_NAME (decl, name);
+ SET_DECL_ASSEMBLER_NAME (decl, name);
+ }
+ if (assembler_name_hash
+ && TREE_CODE (decl) == FUNCTION_DECL
+ && (node = cgraph_get_node_or_alias (decl)) != NULL)
+ {
+ slot = htab_find_slot_with_hash (assembler_name_hash, name,
+ decl_assembler_name_hash (name),
+ INSERT);
+ gcc_assert (!*slot);
+ *slot = node;
+ }
}
/* Add a top-level asm statement to the list. */
{
struct cgraph_asm_node *node;
- node = GGC_CNEW (struct cgraph_asm_node);
+ node = ggc_alloc_cleared_cgraph_asm_node ();
node->asm_str = asm_str;
node->order = cgraph_order++;
node->next = NULL;
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;
n->count = 0;
}
- for (i = 0; VEC_iterate (cgraph_edge_p, redirect_callers, i, e); i++)
+ FOR_EACH_VEC_ELT (cgraph_edge_p, redirect_callers, i, e)
{
/* Redirect calls to the old version node to point to its new
version. */
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;
return new_node;
}
-/* Create a new name for omp child function. Returns an identifier. */
+/* Create a new name for clone of DECL, add SUFFIX. Returns an identifier. */
static GTY(()) unsigned int clone_fn_id_num;
-static tree
-clone_function_name (tree decl)
+tree
+clone_function_name (tree decl, const char *suffix)
{
tree name = DECL_ASSEMBLER_NAME (decl);
size_t len = IDENTIFIER_LENGTH (name);
char *tmp_name, *prefix;
- prefix = XALLOCAVEC (char, len + strlen ("_clone") + 1);
+ prefix = XALLOCAVEC (char, len + strlen (suffix) + 2);
memcpy (prefix, IDENTIFIER_POINTER (name), len);
- strcpy (prefix + len, "_clone");
+ strcpy (prefix + len + 1, suffix);
#ifndef NO_DOT_IN_LABEL
prefix[len] = '.';
#elif !defined NO_DOLLAR_IN_LABEL
prefix[len] = '$';
+#else
+ prefix[len] = '_';
#endif
ASM_FORMAT_PRIVATE_NAME (tmp_name, prefix, clone_fn_id_num++);
return get_identifier (tmp_name);
cgraph_create_virtual_clone (struct cgraph_node *old_node,
VEC(cgraph_edge_p,heap) *redirect_callers,
VEC(ipa_replace_map_p,gc) *tree_map,
- bitmap args_to_skip)
+ bitmap args_to_skip,
+ const char * suffix)
{
tree old_decl = old_node->decl;
struct cgraph_node *new_node = NULL;
size_t i;
struct ipa_replace_map *map;
- gcc_assert (tree_versionable_function_p (old_decl));
+ if (!flag_wpa)
+ 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)
DECL_STRUCT_FUNCTION (new_decl) = NULL;
/* Generate a new name for the new version. */
- DECL_NAME (new_decl) = clone_function_name (old_decl);
+ DECL_NAME (new_decl) = clone_function_name (old_decl, suffix);
SET_DECL_ASSEMBLER_NAME (new_decl, DECL_NAME (new_decl));
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
??? We cannot use COMDAT linkage because there is no
ABI support for this. */
DECL_EXTERNAL (new_node->decl) = 0;
+ if (DECL_ONE_ONLY (old_decl))
+ DECL_SECTION_NAME (new_node->decl) = NULL;
DECL_COMDAT_GROUP (new_node->decl) = 0;
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 (i = 0; VEC_iterate (ipa_replace_map_p, tree_map, i, map); i++)
+ FOR_EACH_VEC_ELT (ipa_replace_map_p, tree_map, i, map)
{
tree var = map->new_tree;
/* 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);
struct cgraph_node *orig_node;
for (orig_node = old_node; orig_node->clone_of; orig_node = orig_node->clone_of)
;
- for (arg = DECL_ARGUMENTS (orig_node->decl); arg; arg = TREE_CHAIN (arg), oldi++)
+ for (arg = DECL_ARGUMENTS (orig_node->decl); arg; arg = DECL_CHAIN (arg), oldi++)
{
if (bitmap_bit_p (old_node->clone.combined_args_to_skip, oldi))
{
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;
AVAIL_AVAILABLE here? That would be good reason to preserve this
bit. */
- else if (DECL_REPLACEABLE_P (node->decl) && !DECL_EXTERNAL (node->decl))
+ else if (decl_replaceable_p (node->decl) && !DECL_EXTERNAL (node->decl))
avail = AVAIL_OVERWRITABLE;
else 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 (TREE_CODE (decl) == VAR_DECL)
DECL_COMMON (decl) = 0;
- else if (TREE_CODE (decl) == FUNCTION_DECL)
+ else gcc_assert (TREE_CODE (decl) == FUNCTION_DECL);
+
+ if (DECL_COMDAT (decl))
{
+ /* It is possible that we are linking against library defining same COMDAT
+ function. To avoid conflict we need to rename our local name of the
+ function just in the case WHOPR partitioning decide to make it hidden
+ to avoid cross partition references. */
+ if (flag_wpa)
+ {
+ const char *old_name;
+
+ old_name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
+ if (TREE_CODE (decl) == FUNCTION_DECL)
+ {
+ struct cgraph_node *node = cgraph_get_node_or_alias (decl);
+ change_decl_assembler_name (decl,
+ clone_function_name (decl, "local"));
+ if (node->local.lto_file_data)
+ lto_record_renamed_decl (node->local.lto_file_data,
+ old_name,
+ IDENTIFIER_POINTER
+ (DECL_ASSEMBLER_NAME (decl)));
+ }
+ else if (TREE_CODE (decl) == VAR_DECL)
+ {
+ struct varpool_node *vnode = varpool_get_node (decl);
+ /* change_decl_assembler_name will warn here on vtables because
+ C++ frontend still sets TREE_SYMBOL_REFERENCED on them. */
+ SET_DECL_ASSEMBLER_NAME (decl,
+ clone_function_name (decl, "local"));
+ if (vnode->lto_file_data)
+ lto_record_renamed_decl (vnode->lto_file_data,
+ old_name,
+ IDENTIFIER_POINTER
+ (DECL_ASSEMBLER_NAME (decl)));
+ }
+ }
+ DECL_SECTION_NAME (decl) = 0;
DECL_COMDAT (decl) = 0;
- DECL_COMDAT_GROUP (decl) = 0;
- DECL_WEAK (decl) = 0;
- DECL_EXTERNAL (decl) = 0;
}
- else
- gcc_unreachable ();
+ DECL_COMDAT_GROUP (decl) = 0;
+ DECL_WEAK (decl) = 0;
+ DECL_EXTERNAL (decl) = 0;
TREE_PUBLIC (decl) = 0;
if (!DECL_RTL_SET_P (decl))
return;
node->local.externally_visible = false;
node->local.local = true;
+ node->resolution = LDPR_PREVAILING_DEF_IRONLY;
gcc_assert (cgraph_function_body_availability (node) == AVAIL_LOCAL);
}
}
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
+ it is safe to ignore its side effects for IPA analysis. */
+
+bool
+cgraph_node_cannot_return (struct cgraph_node *node)
+{
+ int flags = flags_from_decl_or_type (node->decl);
+ if (!flag_exceptions)
+ return (flags & ECF_NORETURN) != 0;
+ else
+ return ((flags & (ECF_NORETURN | ECF_NOTHROW))
+ == (ECF_NORETURN | ECF_NOTHROW));
+}
+
+/* Return true when call of E can not lead to return from caller
+ and thus it is safe to ignore its side effects for IPA analysis
+ when computing side effects of the caller.
+ FIXME: We could actually mark all edges that have no reaching
+ patch to EXIT_BLOCK_PTR or throw to get better results. */
+bool
+cgraph_edge_cannot_lead_to_return (struct cgraph_edge *e)
+{
+ if (cgraph_node_cannot_return (e->caller))
+ return true;
+ if (e->indirect_unknown_callee)
+ {
+ int flags = e->indirect_info->ecf_flags;
+ if (!flag_exceptions)
+ return (flags & ECF_NORETURN) != 0;
+ else
+ return ((flags & (ECF_NORETURN | ECF_NOTHROW))
+ == (ECF_NORETURN | ECF_NOTHROW));
+ }
+ else
+ return cgraph_node_cannot_return (e->callee);
+}
+
+/* Return true when function NODE can be removed from callgraph
+ if all direct calls are eliminated. */
+
+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;
+ return true;
+}
+
+/* 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
+ cgraph_can_remove_if_no_direct_calls_p while the are not
+ cgraph_only_called_directly_p (it is possible they are called from other
+ unit)
+
+ This function behaves as cgraph_only_called_directly_p because eliminating
+ 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
+ {
+ 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. */
+
+bool
+resolution_used_from_other_file_p (enum ld_plugin_symbol_resolution resolution)
+{
+ return (resolution == LDPR_PREVAILING_DEF
+ || resolution == LDPR_PREEMPTED_REG
+ || resolution == LDPR_RESOLVED_EXEC
+ || resolution == LDPR_RESOLVED_DYN);
+}
+
+/* Return true when NODE is known to be used from other (non-LTO) object file.
+ Known only when doing LTO via linker plugin. */
+
+bool
+cgraph_used_from_object_file_p (struct cgraph_node *node)
+{
+ struct cgraph_node *alias;
+
+ 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;
+ for (alias = node->same_body; alias; alias = alias->next)
+ if (TREE_PUBLIC (alias->decl)
+ && resolution_used_from_other_file_p (alias->resolution))
+ return true;
+ return false;
}
#include "gt-cgraph.h"
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