/* 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 "intl.h"
#include "gimple.h"
#include "tree-pass.h"
+#include "ipa-utils.h"
+
+/* Context of record_reference. */
+struct record_reference_ctx
+{
+ bool only_vars;
+};
/* 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;
+ struct record_reference_ctx *ctx = (struct record_reference_ctx *)data;
switch (TREE_CODE (t))
{
case VAR_DECL:
- if (TREE_STATIC (t) || DECL_EXTERNAL (t))
- {
- varpool_mark_needed_node (varpool_node (t));
- if (lang_hooks.callgraph.analyze_expr)
- return lang_hooks.callgraph.analyze_expr (tp, walk_subtrees);
- }
+ case FUNCTION_DECL:
+ gcc_unreachable ();
break;
case FDESC_EXPR:
case ADDR_EXPR:
/* 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));
+ decl = get_base_var (*tp);
+ if (TREE_CODE (decl) == FUNCTION_DECL && !ctx->only_vars)
+ cgraph_mark_address_taken_node (cgraph_node (decl));
+
+ if (TREE_CODE (decl) == VAR_DECL)
+ {
+ gcc_assert (TREE_STATIC (decl) || DECL_EXTERNAL (decl));
+ if (lang_hooks.callgraph.analyze_expr)
+ lang_hooks.callgraph.analyze_expr (&decl, walk_subtrees);
+ varpool_mark_needed_node (varpool_node (decl));
+ }
+ *walk_subtrees = 0;
break;
default:
return NULL_TREE;
}
+/* Reset inlining information of all incoming call edges of NODE. */
+
+void
+reset_inline_failed (struct cgraph_node *node)
+{
+ struct cgraph_edge *e;
+
+ for (e = node->callers; e; e = e->next_caller)
+ {
+ 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 = CIF_FUNCTION_NOT_INLINABLE;
+ else if (e->call_stmt_cannot_inline_p)
+ e->inline_failed = CIF_MISMATCHED_ARGUMENTS;
+ else
+ 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++;
return freq;
}
+/* Mark address taken in STMT. */
+
+static bool
+mark_address (gimple stmt ATTRIBUTE_UNUSED, tree addr,
+ void *data ATTRIBUTE_UNUSED)
+{
+ if (TREE_CODE (addr) == FUNCTION_DECL)
+ {
+ struct cgraph_node *node = cgraph_node (addr);
+ cgraph_mark_address_taken_node (node);
+ }
+ else
+ {
+ addr = get_base_address (addr);
+ if (addr && TREE_CODE (addr) == VAR_DECL
+ && (TREE_STATIC (addr) || DECL_EXTERNAL (addr)))
+ {
+ struct varpool_node *vnode = varpool_node (addr);
+ int walk_subtrees;
+
+ if (lang_hooks.callgraph.analyze_expr)
+ lang_hooks.callgraph.analyze_expr (&addr, &walk_subtrees);
+ varpool_mark_needed_node (vnode);
+ }
+ }
+
+ return false;
+}
+
+/* Mark load of T. */
+
+static bool
+mark_load (gimple stmt ATTRIBUTE_UNUSED, tree t,
+ void *data ATTRIBUTE_UNUSED)
+{
+ t = get_base_address (t);
+ if (TREE_CODE (t) == VAR_DECL
+ && (TREE_STATIC (t) || DECL_EXTERNAL (t)))
+ {
+ struct varpool_node *vnode = varpool_node (t);
+ int walk_subtrees;
+
+ if (lang_hooks.callgraph.analyze_expr)
+ lang_hooks.callgraph.analyze_expr (&t, &walk_subtrees);
+ varpool_mark_needed_node (vnode);
+ }
+ return false;
+}
+
+/* Mark store of T. */
+
+static bool
+mark_store (gimple stmt ATTRIBUTE_UNUSED, tree t,
+ void *data ATTRIBUTE_UNUSED)
+{
+ t = get_base_address (t);
+ if (TREE_CODE (t) == VAR_DECL
+ && (TREE_STATIC (t) || DECL_EXTERNAL (t)))
+ {
+ struct varpool_node *vnode = varpool_node (t);
+ int walk_subtrees;
+
+ if (lang_hooks.callgraph.analyze_expr)
+ lang_hooks.callgraph.analyze_expr (&t, &walk_subtrees);
+ varpool_mark_needed_node (vnode);
+ }
+ return false;
+}
+
/* Create cgraph edges for function calls.
Also look for functions and variables having addresses taken. */
/* Create the callgraph edges and record the nodes referenced by the function.
body. */
FOR_EACH_BB (bb)
- for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
- {
- gimple stmt = gsi_stmt (gsi);
- tree decl;
-
- if (is_gimple_call (stmt) && (decl = gimple_call_fndecl (stmt)))
- {
- size_t i;
- size_t n = gimple_call_num_args (stmt);
+ {
+ for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
+ {
+ gimple stmt = gsi_stmt (gsi);
+ tree decl;
+
+ 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);
- for (i = 0; i < n; i++)
- walk_tree (gimple_call_arg_ptr (stmt, i), record_reference,
- node, visited_nodes);
- if (gimple_call_lhs (stmt))
- walk_tree (gimple_call_lhs_ptr (stmt), record_reference, node,
- visited_nodes);
- }
- else
- {
- struct walk_stmt_info wi;
- memset (&wi, 0, sizeof (wi));
- wi.info = node;
- wi.pset = visited_nodes;
- walk_gimple_op (stmt, record_reference, &wi);
- if (gimple_code (stmt) == GIMPLE_OMP_PARALLEL
- && gimple_omp_parallel_child_fn (stmt))
- {
- tree fn = gimple_omp_parallel_child_fn (stmt);
+ walk_stmt_load_store_addr_ops (stmt, node, mark_load,
+ mark_store, mark_address);
+ if (gimple_code (stmt) == GIMPLE_OMP_PARALLEL
+ && gimple_omp_parallel_child_fn (stmt))
+ {
+ tree fn = gimple_omp_parallel_child_fn (stmt);
+ cgraph_mark_needed_node (cgraph_node (fn));
+ }
+ if (gimple_code (stmt) == GIMPLE_OMP_TASK)
+ {
+ tree fn = gimple_omp_task_child_fn (stmt);
+ if (fn)
+ cgraph_mark_needed_node (cgraph_node (fn));
+ fn = gimple_omp_task_copy_fn (stmt);
+ if (fn)
cgraph_mark_needed_node (cgraph_node (fn));
- }
- if (gimple_code (stmt) == GIMPLE_OMP_TASK)
- {
- tree fn = gimple_omp_task_child_fn (stmt);
- if (fn)
- cgraph_mark_needed_node (cgraph_node (fn));
- fn = gimple_omp_task_copy_fn (stmt);
- if (fn)
- cgraph_mark_needed_node (cgraph_node (fn));
- }
- }
- }
+ }
+ }
+ for (gsi = gsi_start (phi_nodes (bb)); !gsi_end_p (gsi); gsi_next (&gsi))
+ walk_stmt_load_store_addr_ops (gsi_stmt (gsi), node,
+ mark_load, mark_store, mark_address);
+ }
/* Look for initializers of constant variables and private statics. */
for (step = cfun->local_decls;
if (TREE_CODE (decl) == VAR_DECL
&& (TREE_STATIC (decl) && !DECL_EXTERNAL (decl)))
varpool_finalize_decl (decl);
- else if (TREE_CODE (decl) == VAR_DECL && DECL_INITIAL (decl))
- walk_tree (&DECL_INITIAL (decl), record_reference, node, visited_nodes);
}
pointer_set_destroy (visited_nodes);
{
{
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);
+ struct record_reference_ctx ctx = {false};
+
+ ctx.only_vars = only_vars;
+ walk_tree (&DECL_INITIAL (decl), record_reference,
+ &ctx, visited_nodes);
pointer_set_destroy (visited_nodes);
}
node->count = ENTRY_BLOCK_PTR->count;
FOR_EACH_BB (bb)
- for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
- {
- gimple stmt = gsi_stmt (gsi);
- tree decl;
+ {
+ for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
+ {
+ gimple stmt = gsi_stmt (gsi);
+ tree decl;
- 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->loop_depth);
+ 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
+ (current_function_decl, bb),
+ bb->loop_depth);
+ walk_stmt_load_store_addr_ops (stmt, node, mark_load,
+ mark_store, mark_address);
- }
+ }
+ for (gsi = gsi_start (phi_nodes (bb)); !gsi_end_p (gsi); gsi_next (&gsi))
+ walk_stmt_load_store_addr_ops (gsi_stmt (gsi), node,
+ mark_load, mark_store, mark_address);
+ }
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 */
{
{
GIMPLE_PASS,
- NULL, /* name */
+ "*remove_cgraph_callee_edges", /* name */
NULL, /* gate */
remove_cgraph_callee_edges, /* execute */
NULL, /* sub */
NULL, /* next */
0, /* static_pass_number */
- 0, /* tv_id */
+ TV_NONE, /* tv_id */
0, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
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