/* Callgraph construction.
- Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
+ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
Contributed by Jan Hubicka
#include "tree-pass.h"
/* Walk tree and record all calls and references to functions/variables.
- Called via walk_tree: TP is pointer to tree to be examined. */
+ Called via walk_tree: TP is pointer to tree to be examined.
+ When DATA is non-null, record references to callgraph.
+ */
static tree
-record_reference (tree *tp, int *walk_subtrees, void *data ATTRIBUTE_UNUSED)
+record_reference (tree *tp, int *walk_subtrees, void *data)
{
tree t = *tp;
tree decl;
+ bool do_callgraph = data != NULL;
switch (TREE_CODE (t))
{
/* Record dereferences to the functions. This makes the
functions reachable unconditionally. */
decl = TREE_OPERAND (*tp, 0);
- if (TREE_CODE (decl) == FUNCTION_DECL)
- cgraph_mark_needed_node (cgraph_node (decl));
+ if (TREE_CODE (decl) == FUNCTION_DECL && do_callgraph)
+ cgraph_mark_address_taken_node (cgraph_node (decl));
break;
default:
return NULL_TREE;
}
-/* Give initial reasons why inlining would fail on all calls from
- NODE. Those get either nullified or usually overwritten by more precise
- reason later. */
+/* Reset inlining information of all incoming call edges of NODE. */
-static void
-initialize_inline_failed (struct cgraph_node *node)
+void
+reset_inline_failed (struct cgraph_node *node)
{
struct cgraph_edge *e;
for (e = node->callers; e; e = e->next_caller)
{
- gcc_assert (!e->callee->global.inlined_to);
- gcc_assert (e->inline_failed);
- if (node->local.redefined_extern_inline)
- e->inline_failed = N_("redefined extern inline functions are not "
- "considered for inlining");
+ e->callee->global.inlined_to = NULL;
+ if (!node->analyzed)
+ e->inline_failed = CIF_BODY_NOT_AVAILABLE;
+ else if (node->local.redefined_extern_inline)
+ e->inline_failed = CIF_REDEFINED_EXTERN_INLINE;
else if (!node->local.inlinable)
- e->inline_failed = N_("function not inlinable");
- else if (gimple_call_cannot_inline_p (e->call_stmt))
- e->inline_failed = N_("mismatched arguments");
+ e->inline_failed = CIF_FUNCTION_NOT_INLINABLE;
+ else if (e->call_stmt_cannot_inline_p)
+ e->inline_failed = CIF_MISMATCHED_ARGUMENTS;
else
- e->inline_failed = N_("function not considered for inlining");
+ e->inline_failed = CIF_FUNCTION_NOT_CONSIDERED;
}
}
/* Computes the frequency of the call statement so that it can be stored in
cgraph_edge. BB is the basic block of the call statement. */
int
-compute_call_stmt_bb_frequency (basic_block bb)
+compute_call_stmt_bb_frequency (tree decl, basic_block bb)
{
- int entry_freq = ENTRY_BLOCK_PTR->frequency;
+ int entry_freq = ENTRY_BLOCK_PTR_FOR_FUNCTION
+ (DECL_STRUCT_FUNCTION (decl))->frequency;
int freq = bb->frequency;
+ if (profile_status_for_function (DECL_STRUCT_FUNCTION (decl)) == PROFILE_ABSENT)
+ return CGRAPH_FREQ_BASE;
+
if (!entry_freq)
entry_freq = 1, freq++;
size_t i;
size_t n = gimple_call_num_args (stmt);
cgraph_create_edge (node, cgraph_node (decl), stmt,
- bb->count, compute_call_stmt_bb_frequency (bb),
+ bb->count, compute_call_stmt_bb_frequency (current_function_decl, bb),
bb->loop_depth);
for (i = 0; i < n; i++)
walk_tree (gimple_call_arg_ptr (stmt, i), record_reference,
}
pointer_set_destroy (visited_nodes);
- initialize_inline_failed (node);
return 0;
}
{
{
GIMPLE_PASS,
- NULL, /* name */
+ "*build_cgraph_edges", /* name */
NULL, /* gate */
build_cgraph_edges, /* execute */
NULL, /* sub */
NULL, /* next */
0, /* static_pass_number */
- 0, /* tv_id */
+ TV_NONE, /* tv_id */
PROP_cfg, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
};
/* Record references to functions and other variables present in the
- initial value of DECL, a variable. */
+ initial value of DECL, a variable.
+ When ONLY_VARS is true, we mark needed only variables, not functions. */
void
-record_references_in_initializer (tree decl)
+record_references_in_initializer (tree decl, bool only_vars)
{
struct pointer_set_t *visited_nodes = pointer_set_create ();
- walk_tree (&DECL_INITIAL (decl), record_reference, NULL, visited_nodes);
+ walk_tree (&DECL_INITIAL (decl), record_reference,
+ only_vars ? NULL : decl, visited_nodes);
pointer_set_destroy (visited_nodes);
}
if (is_gimple_call (stmt) && (decl = gimple_call_fndecl (stmt)))
cgraph_create_edge (node, cgraph_node (decl), stmt,
- bb->count, compute_call_stmt_bb_frequency (bb),
+ bb->count,
+ compute_call_stmt_bb_frequency
+ (current_function_decl, bb),
bb->loop_depth);
}
- initialize_inline_failed (node);
gcc_assert (!node->global.inlined_to);
+
return 0;
}
{
{
GIMPLE_PASS,
- NULL, /* name */
+ "*rebuild_cgraph_edges", /* name */
NULL, /* gate */
rebuild_cgraph_edges, /* execute */
NULL, /* sub */
NULL, /* next */
0, /* static_pass_number */
- 0, /* tv_id */
+ TV_NONE, /* tv_id */
PROP_cfg, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_finish */
}
};
+
+
+static unsigned int
+remove_cgraph_callee_edges (void)
+{
+ cgraph_node_remove_callees (cgraph_node (current_function_decl));
+ return 0;
+}
+
+struct gimple_opt_pass pass_remove_cgraph_callee_edges =
+{
+ {
+ GIMPLE_PASS,
+ "*remove_cgraph_callee_edges", /* name */
+ NULL, /* gate */
+ remove_cgraph_callee_edges, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ TV_NONE, /* tv_id */
+ 0, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ 0, /* todo_flags_finish */
+ }
+};
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