/* Callgraph based interprocedural optimizations.
- 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 "timevar.h"
#include "params.h"
#include "fibheap.h"
-#include "c-common.h"
#include "intl.h"
#include "function.h"
#include "ipa-prop.h"
-#include "tree-gimple.h"
+#include "gimple.h"
+#include "tree-iterator.h"
#include "tree-pass.h"
#include "output.h"
+#include "coverage.h"
static void cgraph_expand_all_functions (void);
static void cgraph_mark_functions_to_output (void);
VEC_safe_push (tree, gc, static_dtors, fndecl);
DECL_STATIC_DESTRUCTOR (fndecl) = 0;
}
- DECL_INLINE (fndecl) = 1;
node = cgraph_node (fndecl);
node->local.disregard_inline_limits = 1;
cgraph_mark_reachable_node (node);
transformations that has been already performed on the whole
cgraph but not on this function. */
- tree_register_cfg_hooks ();
+ gimple_register_cfg_hooks ();
if (!node->analyzed)
cgraph_analyze_function (node);
push_cfun (DECL_STRUCT_FUNCTION (fndecl));
case CGRAPH_STATE_EXPANSION:
/* Functions created during expansion shall be compiled
directly. */
- node->output = 0;
+ node->process = 0;
cgraph_expand_function (node);
break;
gcc_unreachable ();
break;
}
+ cgraph_call_function_insertion_hooks (node);
}
return output;
}
static void
cgraph_reset_node (struct cgraph_node *node)
{
- /* If node->output is set, then we have already begun whole-unit analysis.
+ /* If node->process is set, then we have already begun whole-unit analysis.
This is *not* testing for whether we've already emitted the function.
That case can be sort-of legitimately seen with real function redefinition
errors. I would argue that the front end should never present us with
such a case, but don't enforce that for now. */
- gcc_assert (!node->output);
+ gcc_assert (!node->process);
/* Reset our data structures so we can analyze the function again. */
memset (&node->local, 0, sizeof (node->local));
struct function *this_cfun = DECL_STRUCT_FUNCTION (node->decl);
struct function *saved_cfun = cfun;
basic_block this_block;
- block_stmt_iterator bsi;
+ gimple_stmt_iterator gsi;
bool error_found = false;
if (errorcount || sorrycount)
}
if (node->analyzed
- && DECL_SAVED_TREE (node->decl) && !TREE_ASM_WRITTEN (node->decl)
+ && !TREE_ASM_WRITTEN (node->decl)
&& (!DECL_EXTERNAL (node->decl) || node->global.inlined_to))
{
if (this_cfun->cfg)
/* Reach the trees by walking over the CFG, and note the
enclosing basic-blocks in the call edges. */
FOR_EACH_BB_FN (this_block, this_cfun)
- for (bsi = bsi_start (this_block); !bsi_end_p (bsi); bsi_next (&bsi))
+ for (gsi = gsi_start_bb (this_block);
+ !gsi_end_p (gsi);
+ gsi_next (&gsi))
{
- tree stmt = bsi_stmt (bsi);
- tree call = get_call_expr_in (stmt);
+ gimple stmt = gsi_stmt (gsi);
tree decl;
- if (call && (decl = get_callee_fndecl (call)))
+ if (is_gimple_call (stmt) && (decl = gimple_call_fndecl (stmt)))
{
struct cgraph_edge *e = cgraph_edge (node, stmt);
if (e)
if (e->aux)
{
error ("shared call_stmt:");
- debug_generic_stmt (stmt);
+ debug_gimple_stmt (stmt);
error_found = true;
}
if (e->callee->decl != cgraph_node (decl)->decl
else
{
error ("missing callgraph edge for call stmt:");
- debug_generic_stmt (stmt);
+ debug_gimple_stmt (stmt);
error_found = true;
}
}
error ("edge %s->%s has no corresponding call_stmt",
cgraph_node_name (e->caller),
cgraph_node_name (e->callee));
- debug_generic_stmt (e->call_stmt);
+ debug_gimple_stmt (e->call_stmt);
error_found = true;
}
e->aux = 0;
{
fprintf (cgraph_dump_file, "Initial entry points:");
for (node = cgraph_nodes; node != first_analyzed; node = node->next)
- if (node->needed && DECL_SAVED_TREE (node->decl))
+ if (node->needed)
fprintf (cgraph_dump_file, " %s", cgraph_node_name (node));
fprintf (cgraph_dump_file, "\n");
}
/* ??? It is possible to create extern inline function and later using
weak alias attribute to kill its body. See
gcc.c-torture/compile/20011119-1.c */
- if (!DECL_SAVED_TREE (decl))
+ if (!DECL_STRUCT_FUNCTION (decl))
{
cgraph_reset_node (node);
continue;
}
gcc_assert (!node->analyzed && node->reachable);
- gcc_assert (DECL_SAVED_TREE (decl));
+ gcc_assert (gimple_body (decl));
cgraph_analyze_function (node);
if (!edge->callee->reachable)
cgraph_mark_reachable_node (edge->callee);
+ /* If decl is a clone of an abstract function, mark that abstract
+ function so that we don't release its body. The DECL_INITIAL() of that
+ abstract function declaration will be later needed to output debug info. */
+ if (DECL_ABSTRACT_ORIGIN (decl))
+ {
+ struct cgraph_node *origin_node = cgraph_node (DECL_ABSTRACT_ORIGIN (decl));
+ origin_node->abstract_and_needed = true;
+ }
+
/* We finalize local static variables during constructing callgraph
edges. Process their attributes too. */
process_function_and_variable_attributes (first_processed,
{
fprintf (cgraph_dump_file, "Unit entry points:");
for (node = cgraph_nodes; node != first_analyzed; node = node->next)
- if (node->needed && DECL_SAVED_TREE (node->decl))
+ if (node->needed)
fprintf (cgraph_dump_file, " %s", cgraph_node_name (node));
fprintf (cgraph_dump_file, "\n\nInitial ");
dump_cgraph (cgraph_dump_file);
tree decl = node->decl;
next = node->next;
- if (node->local.finalized && !DECL_SAVED_TREE (decl))
+ if (node->local.finalized && !gimple_has_body_p (decl))
cgraph_reset_node (node);
- if (!node->reachable && DECL_SAVED_TREE (decl))
+ if (!node->reachable && gimple_has_body_p (decl))
{
if (cgraph_dump_file)
fprintf (cgraph_dump_file, " %s", cgraph_node_name (node));
}
else
node->next_needed = NULL;
- gcc_assert (!node->local.finalized || DECL_SAVED_TREE (decl));
+ gcc_assert (!node->local.finalized || gimple_has_body_p (decl));
gcc_assert (node->analyzed == node->local.finalized);
}
if (cgraph_dump_file)
cgraph_analyze_functions ();
timevar_pop (TV_CGRAPH);
}
+
+
/* Figure out what functions we want to assemble. */
static void
tree decl = node->decl;
struct cgraph_edge *e;
- gcc_assert (!node->output);
+ gcc_assert (!node->process);
for (e = node->callers; e; e = e->next_caller)
if (e->inline_failed)
/* We need to output all local functions that are used and not
always inlined, as well as those that are reachable from
outside the current compilation unit. */
- if (DECL_SAVED_TREE (decl)
+ if (node->analyzed
&& !node->global.inlined_to
&& (node->needed
|| (e && node->reachable))
&& !TREE_ASM_WRITTEN (decl)
&& !DECL_EXTERNAL (decl))
- node->output = 1;
+ node->process = 1;
else
{
/* We should've reclaimed all functions that are not needed. */
#ifdef ENABLE_CHECKING
- if (!node->global.inlined_to && DECL_SAVED_TREE (decl)
+ if (!node->global.inlined_to
+ && gimple_has_body_p (decl)
&& !DECL_EXTERNAL (decl))
{
dump_cgraph_node (stderr, node);
internal_error ("failed to reclaim unneeded function");
}
#endif
- gcc_assert (node->global.inlined_to || !DECL_SAVED_TREE (decl)
+ gcc_assert (node->global.inlined_to
+ || !gimple_has_body_p (decl)
|| DECL_EXTERNAL (decl));
}
gcc_assert (!node->global.inlined_to);
announce_function (decl);
+ node->process = 0;
gcc_assert (node->lowered);
tree_rest_of_compilation (decl);
/* Make sure that BE didn't give up on compiling. */
- /* ??? Can happen with nested function of extern inline. */
gcc_assert (TREE_ASM_WRITTEN (decl));
-
current_function_decl = NULL;
- if (!cgraph_preserve_function_body_p (decl))
- {
- cgraph_release_function_body (node);
- /* Eliminate all call edges. This is important so the call_expr no longer
- points to the dead function body. */
- cgraph_node_remove_callees (node);
- }
+ gcc_assert (!cgraph_preserve_function_body_p (decl));
+ cgraph_release_function_body (node);
+ /* Eliminate all call edges. This is important so the GIMPLE_CALL no longer
+ points to the dead function body. */
+ cgraph_node_remove_callees (node);
cgraph_function_flags_ready = true;
}
/* Return true when CALLER_DECL should be inlined into CALLEE_DECL. */
bool
-cgraph_inline_p (struct cgraph_edge *e, const char **reason)
+cgraph_inline_p (struct cgraph_edge *e, cgraph_inline_failed_t *reason)
{
*reason = e->inline_failed;
return !e->inline_failed;
/* Garbage collector may remove inline clones we eliminate during
optimization. So we must be sure to not reference them. */
for (i = 0; i < order_pos; i++)
- if (order[i]->output)
+ if (order[i]->process)
order[new_order_pos++] = order[i];
for (i = new_order_pos - 1; i >= 0; i--)
{
node = order[i];
- if (node->output)
+ if (node->process)
{
gcc_assert (node->reachable);
- node->output = 0;
+ node->process = 0;
cgraph_expand_function (node);
}
}
for (pf = cgraph_nodes; pf; pf = pf->next)
{
- if (pf->output)
+ if (pf->process)
{
i = pf->order;
gcc_assert (nodes[i].kind == ORDER_UNDEFINED);
switch (nodes[i].kind)
{
case ORDER_FUNCTION:
- nodes[i].u.f->output = 0;
+ nodes[i].u.f->process = 0;
cgraph_expand_function (nodes[i].u.f);
break;
cgraph_preserve_function_body_p (tree decl)
{
struct cgraph_node *node;
- if (!cgraph_global_info_ready)
- return (flag_really_no_inline
- ? DECL_DISREGARD_INLINE_LIMITS (decl)
- : DECL_INLINE (decl));
+
+ gcc_assert (cgraph_global_info_ready);
/* Look if there is any clone around. */
for (node = cgraph_node (decl); node; node = node->next_clone)
if (node->global.inlined_to)
{
set_cfun (NULL);
current_function_decl = NULL;
- tree_register_cfg_hooks ();
+ gimple_register_cfg_hooks ();
bitmap_obstack_initialize (NULL);
execute_ipa_pass_list (all_ipa_passes);
+
+ /* Generate coverage variables and constructors. */
+ coverage_finish ();
+
+ /* Process new functions added. */
+ set_cfun (NULL);
+ current_function_decl = NULL;
+ cgraph_process_new_functions ();
+
bitmap_obstack_release (NULL);
}
varpool_assemble_pending_decls ();
}
- varpool_output_debug_info ();
cgraph_process_new_functions ();
cgraph_state = CGRAPH_STATE_FINISHED;
for (node = cgraph_nodes; node; node = node->next)
if (node->analyzed
&& (node->global.inlined_to
- || DECL_SAVED_TREE (node->decl)))
+ || gimple_has_body_p (node->decl)))
{
error_found = true;
dump_cgraph_node (stderr, node);
resdecl = build_decl (RESULT_DECL, NULL_TREE, void_type_node);
DECL_ARTIFICIAL (resdecl) = 1;
DECL_RESULT (decl) = resdecl;
+ DECL_CONTEXT (resdecl) = decl;
allocate_struct_function (decl, false);
struct cgraph_edge *e;
gcc_assert (new_version);
+
+ /* Update the call expr on the edges to call the new version. */
for (e = new_version->callers; e; e = e->next_caller)
- /* Update the call expr on the edges
- to call the new version. */
- TREE_OPERAND (CALL_EXPR_FN (get_call_expr_in (e->call_stmt)), 0) = new_version->decl;
+ {
+ struct function *inner_function = DECL_STRUCT_FUNCTION (e->caller->decl);
+ gimple_call_set_fndecl (e->call_stmt, new_version->decl);
+ /* Update EH information too, just in case. */
+ if (!stmt_could_throw_p (e->call_stmt)
+ && lookup_stmt_eh_region_fn (inner_function, e->call_stmt))
+ remove_stmt_from_eh_region_fn (inner_function, e->call_stmt);
+ }
}
TREE_MAP is a mapping of tree nodes we want to replace with
new ones (according to results of prior analysis).
OLD_VERSION_NODE is the node that is versioned.
- It returns the new version's cgraph node. */
+ It returns the new version's cgraph node.
+ ARGS_TO_SKIP lists arguments to be omitted from functions
+ */
struct cgraph_node *
cgraph_function_versioning (struct cgraph_node *old_version_node,
VEC(cgraph_edge_p,heap) *redirect_callers,
- varray_type tree_map)
+ varray_type tree_map,
+ bitmap args_to_skip)
{
tree old_decl = old_version_node->decl;
struct cgraph_node *new_version_node = NULL;
/* Make a new FUNCTION_DECL tree node for the
new version. */
- new_decl = copy_node (old_decl);
+ if (!args_to_skip)
+ new_decl = copy_node (old_decl);
+ else
+ new_decl = build_function_decl_skip_args (old_decl, args_to_skip);
/* Create the new version's call-graph node.
and update the edges of the new node. */
redirect_callers);
/* Copy the OLD_VERSION_NODE function tree to the new version. */
- tree_function_versioning (old_decl, new_decl, tree_map, false);
- /* Update the call_expr on the edges to call the new version node. */
- update_call_expr (new_version_node);
+ tree_function_versioning (old_decl, new_decl, tree_map, false, args_to_skip);
/* Update the new version's properties.
- Make The new version visible only within this translation unit.
+ Make The new version visible only within this translation unit. Make sure
+ that is not weak also.
??? We cannot use COMDAT linkage because there is no
ABI support for this. */
DECL_EXTERNAL (new_version_node->decl) = 0;
DECL_ONE_ONLY (new_version_node->decl) = 0;
TREE_PUBLIC (new_version_node->decl) = 0;
DECL_COMDAT (new_version_node->decl) = 0;
+ DECL_WEAK (new_version_node->decl) = 0;
+ DECL_VIRTUAL_P (new_version_node->decl) = 0;
new_version_node->local.externally_visible = 0;
new_version_node->local.local = 1;
new_version_node->lowered = true;
+
+ /* Update the call_expr on the edges to call the new version node. */
+ update_call_expr (new_version_node);
+
+ cgraph_call_function_insertion_hooks (new_version_node);
return new_version_node;
}
gcc_assert (first_clone == cgraph_node (first_clone->decl));
/* Copy the OLD_VERSION_NODE function tree to the new version. */
- tree_function_versioning (node->decl, first_clone->decl, NULL, true);
+ tree_function_versioning (node->decl, first_clone->decl, NULL, true, NULL);
DECL_EXTERNAL (first_clone->decl) = 0;
DECL_ONE_ONLY (first_clone->decl) = 0;
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