/* Callgraph handling code.
- Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
+ Free Software Foundation, Inc.
Contributed by Jan Hubicka
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* This file contains basic routines manipulating call graph
#include "intl.h"
#include "tree-gimple.h"
#include "tree-dump.h"
+#include "tree-flow.h"
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 nodes. */
int cgraph_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;
node = GGC_CNEW (struct cgraph_node);
node->next = cgraph_nodes;
node->uid = cgraph_max_uid++;
+ node->pid = -1;
node->order = cgraph_order++;
if (cgraph_nodes)
cgraph_nodes->previous = node;
static hashval_t
edge_hash (const void *x)
{
- return htab_hash_pointer (((struct cgraph_edge *) x)->call_stmt);
+ return htab_hash_pointer (((const struct cgraph_edge *) x)->call_stmt);
}
/* Return nonzero if decl_id of die_struct X is the same as UID of decl *Y. */
static int
edge_eq (const void *x, const void *y)
{
- return ((struct cgraph_edge *) x)->call_stmt == y;
+ return ((const struct cgraph_edge *) x)->call_stmt == y;
}
/* Return callgraph edge representing CALL_EXPR statement. */
struct cgraph_edge *
cgraph_create_edge (struct cgraph_node *caller, struct cgraph_node *callee,
- tree call_stmt, gcov_type count, int nest)
+ tree call_stmt, gcov_type count, int freq, int nest)
{
struct cgraph_edge *edge = GGC_NEW (struct cgraph_edge);
#ifdef ENABLE_CHECKING
caller->callees = edge;
callee->callers = edge;
edge->count = count;
+ gcc_assert (count >= 0);
+ edge->frequency = freq;
+ gcc_assert (freq >= 0);
+ gcc_assert (freq <= CGRAPH_FREQ_MAX);
edge->loop_nest = nest;
if (caller->call_site_hash)
{
e->callee = n;
}
+/* Update or remove corresponding cgraph edge if a call OLD_CALL
+ in OLD_STMT changed into NEW_STMT. */
+
+void
+cgraph_update_edges_for_call_stmt (tree old_stmt, tree old_call,
+ tree new_stmt)
+{
+ tree new_call = get_call_expr_in (new_stmt);
+ struct cgraph_node *node = cgraph_node (cfun->decl);
+
+ if (old_call != new_call)
+ {
+ struct cgraph_edge *e = cgraph_edge (node, old_stmt);
+ struct cgraph_edge *ne = NULL;
+ tree new_decl;
+
+ if (e)
+ {
+ gcov_type count = e->count;
+ int frequency = e->frequency;
+ int loop_nest = e->loop_nest;
+
+ cgraph_remove_edge (e);
+ if (new_call)
+ {
+ new_decl = get_callee_fndecl (new_call);
+ if (new_decl)
+ {
+ ne = cgraph_create_edge (node, cgraph_node (new_decl),
+ new_stmt, count, frequency,
+ loop_nest);
+ gcc_assert (ne->inline_failed);
+ }
+ }
+ }
+ }
+ else if (old_stmt != new_stmt)
+ {
+ struct cgraph_edge *e = cgraph_edge (node, old_stmt);
+
+ if (e)
+ cgraph_set_call_stmt (e, new_stmt);
+ }
+}
+
/* Remove all callees from the node. */
void
node->callers = NULL;
}
+/* Release memory used to represent body of function NODE. */
+
+void
+cgraph_release_function_body (struct cgraph_node *node)
+{
+ if (DECL_STRUCT_FUNCTION (node->decl)
+ && DECL_STRUCT_FUNCTION (node->decl)->gimple_df)
+ {
+ tree old_decl = current_function_decl;
+ push_cfun (DECL_STRUCT_FUNCTION (node->decl));
+ current_function_decl = node->decl;
+ delete_tree_ssa ();
+ delete_tree_cfg_annotations ();
+ cfun->eh = NULL;
+ current_function_decl = old_decl;
+ pop_cfun();
+ }
+ DECL_SAVED_TREE (node->decl) = NULL;
+ DECL_STRUCT_FUNCTION (node->decl) = NULL;
+ DECL_INITIAL (node->decl) = error_mark_node;
+}
+
/* Remove the node from cgraph. */
void
}
if (kill_body && flag_unit_at_a_time)
- {
- DECL_SAVED_TREE (node->decl) = NULL;
- DECL_STRUCT_FUNCTION (node->decl) = NULL;
- DECL_INITIAL (node->decl) = error_mark_node;
- }
+ cgraph_release_function_body (node);
node->decl = NULL;
if (node->call_site_hash)
{
const char * const cgraph_availability_names[] =
{"unset", "not_available", "overwrittable", "available", "local"};
-/* Dump given cgraph node. */
+
+/* Dump call graph node NODE to file F. */
+
void
dump_cgraph_node (FILE *f, struct cgraph_node *node)
{
struct cgraph_edge *edge;
- fprintf (f, "%s/%i:", cgraph_node_name (node), node->uid);
+ fprintf (f, "%s/%i(%i):", cgraph_node_name (node), node->uid, node->pid);
if (node->global.inlined_to)
fprintf (f, " (inline copy in %s/%i)",
cgraph_node_name (node->global.inlined_to),
if (edge->count)
fprintf (f, "("HOST_WIDEST_INT_PRINT_DEC"x) ",
(HOST_WIDEST_INT)edge->count);
+ if (edge->frequency)
+ fprintf (f, "(%.2f per call) ",
+ edge->frequency / (double)CGRAPH_FREQ_BASE);
if (!edge->inline_failed)
fprintf(f, "(inlined) ");
}
if (edge->count)
fprintf (f, "("HOST_WIDEST_INT_PRINT_DEC"x) ",
(HOST_WIDEST_INT)edge->count);
+ 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);
}
fprintf (f, "\n");
}
-/* Dump the callgraph. */
+
+/* Dump call graph node NODE to stderr. */
+
+void
+debug_cgraph_node (struct cgraph_node *node)
+{
+ dump_cgraph_node (stderr, node);
+}
+
+
+/* Dump the callgraph to file F. */
void
dump_cgraph (FILE *f)
dump_cgraph_node (f, node);
}
+
+/* Dump the call graph to stderr. */
+
+void
+debug_cgraph (void)
+{
+ dump_cgraph (stderr);
+}
+
+
/* Set the DECL_ASSEMBLER_NAME and update cgraph hashtables. */
+
void
change_decl_assembler_name (tree decl, tree name)
{
/* Create clone of E in the node N represented by CALL_EXPR the callgraph. */
struct cgraph_edge *
cgraph_clone_edge (struct cgraph_edge *e, struct cgraph_node *n,
- tree call_stmt, gcov_type count_scale, int loop_nest,
- bool update_original)
+ tree call_stmt, gcov_type count_scale, int freq_scale,
+ int loop_nest, bool update_original)
{
struct cgraph_edge *new;
+ gcov_type count = e->count * count_scale / REG_BR_PROB_BASE;
+ gcov_type freq = e->frequency * (gcov_type) freq_scale / CGRAPH_FREQ_BASE;
- new = cgraph_create_edge (n, e->callee, call_stmt,
- e->count * count_scale / REG_BR_PROB_BASE,
+ if (freq > CGRAPH_FREQ_MAX)
+ freq = CGRAPH_FREQ_MAX;
+ new = cgraph_create_edge (n, e->callee, call_stmt, count, freq,
e->loop_nest + loop_nest);
new->inline_failed = e->inline_failed;
function's profile to reflect the fact that part of execution is handled
by node. */
struct cgraph_node *
-cgraph_clone_node (struct cgraph_node *n, gcov_type count, int loop_nest,
+cgraph_clone_node (struct cgraph_node *n, gcov_type count, int freq, int loop_nest,
bool update_original)
{
struct cgraph_node *new = cgraph_create_node ();
}
for (e = n->callees;e; e=e->next_callee)
- cgraph_clone_edge (e, new, e->call_stmt, count_scale, loop_nest,
+ cgraph_clone_edge (e, new, e->call_stmt, count_scale, freq, loop_nest,
update_original);
new->next_clone = n->next_clone;
break;
case CGRAPH_STATE_IPA:
+ case CGRAPH_STATE_IPA_SSA:
case CGRAPH_STATE_EXPANSION:
/* Bring the function into finalized state and enqueue for later
analyzing and compilation. */
tree_register_cfg_hooks ();
if (!lowered)
tree_lowering_passes (fndecl);
+ bitmap_obstack_initialize (NULL);
+ if (!gimple_in_ssa_p (DECL_STRUCT_FUNCTION (fndecl)) && optimize)
+ execute_pass_list (pass_early_local_passes.pass.sub);
+ bitmap_obstack_release (NULL);
tree_rest_of_compilation (fndecl);
pop_cfun ();
current_function_decl = NULL;
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