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tree-optimize (execute_fixup_cfg): Set after_inlining flag.

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2007-01-02  Jan Hubicka  <jh@suse.cz>

	* tree-optimize (execute_fixup_cfg): Set after_inlining flag.
	Set NOTHROW flag on call statements proved to be nothrow.
	Update statement of local calls so new pure/const functions are
	updated. Update_ssa when in ssa form. Mark PHI nodes of nonlocal
	goto receivers.
	(tree_rest_of_compilation): Register hooks and initialize bitmap
	early. Do not set after_inlining flag.

From-SVN: r120357
This commit is contained in:
Jan Hubicka 2007-01-02 22:33:45 +01:00 committed by Jan Hubicka
parent a063525a3a
commit de6bd996eb
2 changed files with 73 additions and 29 deletions
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10
gcc/ChangeLog
View File

@ -1,3 +1,13 @@
2007-01-02 Jan Hubicka <jh@suse.cz>
* tree-optimize (execute_fixup_cfg): Set after_inlining flag.
Set NOTHROW flag on call statements proved to be nothrow.
Update statement of local calls so new pure/const functions are
updated. Update_ssa when in ssa form. Mark PHI nodes of nonlocal
goto receivers.
(tree_rest_of_compilation): Register hooks and initialize bitmap
early. Do not set after_inlining flag.
2007-01-02 Steve Ellcey <sje@cup.hp.com>
* sbitmap.c (HOST_BITS_PER_LONG_LONG): Change to

92
gcc/tree-optimize.c
View File

@ -264,6 +264,8 @@ execute_fixup_cfg (void)
basic_block bb;
block_stmt_iterator bsi;
cfun->after_inlining = true;
if (cfun->eh)
FOR_EACH_BB (bb)
{
@ -271,9 +273,16 @@ execute_fixup_cfg (void)
{
tree stmt = bsi_stmt (bsi);
tree call = get_call_expr_in (stmt);
tree decl = call ? get_callee_fndecl (call) : NULL;
if (call && call_expr_flags (call) & (ECF_CONST | ECF_PURE))
TREE_SIDE_EFFECTS (call) = 0;
if (decl && call_expr_flags (call) & (ECF_CONST | ECF_PURE)
&& TREE_SIDE_EFFECTS (call))
{
update_stmt (stmt);
TREE_SIDE_EFFECTS (call) = 0;
}
if (decl && TREE_NOTHROW (decl))
TREE_NOTHROW (call) = 1;
if (!tree_could_throw_p (stmt) && lookup_stmt_eh_region (stmt))
remove_stmt_from_eh_region (stmt);
}
@ -281,29 +290,55 @@ execute_fixup_cfg (void)
}
if (current_function_has_nonlocal_label)
FOR_EACH_BB (bb)
{
for (bsi = bsi_start (bb); !bsi_end_p (bsi); bsi_next (&bsi))
{
tree stmt = bsi_stmt (bsi);
if (tree_can_make_abnormal_goto (stmt))
{
if (stmt == bsi_stmt (bsi_last (bb)))
{
if (!has_abnormal_outgoing_edge_p (bb))
{
FOR_EACH_BB (bb)
{
for (bsi = bsi_start (bb); !bsi_end_p (bsi); bsi_next (&bsi))
{
tree stmt = bsi_stmt (bsi);
if (tree_can_make_abnormal_goto (stmt))
{
if (stmt == bsi_stmt (bsi_last (bb)))
{
if (!has_abnormal_outgoing_edge_p (bb))
make_abnormal_goto_edges (bb, true);
}
else
{
edge e = split_block (bb, stmt);
bb = e->src;
make_abnormal_goto_edges (bb, true);
}
else
{
edge e = split_block (bb, stmt);
bb = e->src;
make_abnormal_goto_edges (bb, true);
}
break;
}
}
}
}
break;
}
/* Update PHIs on nonlocal goto receivers we (possibly)
just created new edges into. */
if (TREE_CODE (stmt) == LABEL_EXPR
&& gimple_in_ssa_p (cfun))
{
tree target = LABEL_EXPR_LABEL (stmt);
if (DECL_NONLOCAL (target))
{
tree phi;
for (phi = phi_nodes (bb); phi; phi = PHI_CHAIN (phi))
{
gcc_assert (SSA_NAME_OCCURS_IN_ABNORMAL_PHI
(PHI_RESULT (phi)));
mark_sym_for_renaming
(SSA_NAME_VAR (PHI_RESULT (phi)));
}
}
}
}
}
}
if (gimple_in_ssa_p (cfun))
{
delete_unreachable_blocks ();
update_ssa (TODO_update_ssa);
}
cleanup_tree_cfg ();
/* Dump a textual representation of the flowgraph. */
@ -408,6 +443,9 @@ tree_rest_of_compilation (tree fndecl)
node = cgraph_node (fndecl);
/* Initialize the default bitmap obstack. */
bitmap_obstack_initialize (NULL);
/* We might need the body of this function so that we can expand
it inline somewhere else. */
if (cgraph_preserve_function_body_p (fndecl))
@ -424,7 +462,8 @@ tree_rest_of_compilation (tree fndecl)
We haven't necessarily assigned RTL to all variables yet, so it's
not safe to try to expand expressions involving them. */
cfun->x_dont_save_pending_sizes_p = 1;
cfun->after_inlining = true;
tree_register_cfg_hooks ();
if (flag_inline_trees)
{
@ -453,12 +492,7 @@ tree_rest_of_compilation (tree fndecl)
Kill it so it won't confuse us. */
cgraph_node_remove_callees (node);
/* Initialize the default bitmap obstack. */
bitmap_obstack_initialize (NULL);
bitmap_obstack_initialize (&reg_obstack); /* FIXME, only at RTL generation*/
tree_register_cfg_hooks ();
/* Perform all tree transforms and optimizations. */
execute_pass_list (all_passes);