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re PR tree-optimization/42508 (wrong code with "-O1 -fipa-sra")

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PR tree-optimization/42508
	* tree-sra.c (convert_callers): Check for recursive call
	by comparing cgraph nodes instead of decls.
	(modify_function): Call ipa_modify_formal_parameters also
	on all same_body aliases.

	* g++.dg/opt/pr42508.C: New test.

	* cgraphunit.c (cgraph_materialize_all_clones): Compare
	cgraph nodes when checking for same_body aliases.

From-SVN: r155640
This commit is contained in:
Jakub Jelinek 2010-01-05 09:40:50 +01:00 committed by Jakub Jelinek
parent 11492349fe
commit 566f27e42c
5 changed files with 63 additions and 17 deletions
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11
gcc/ChangeLog
View File

@ -1,3 +1,14 @@
2010-01-05 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/42508
* tree-sra.c (convert_callers): Check for recursive call
by comparing cgraph nodes instead of decls.
(modify_function): Call ipa_modify_formal_parameters also
on all same_body aliases.
* cgraphunit.c (cgraph_materialize_all_clones): Compare
cgraph nodes when checking for same_body aliases.
2010-01-05 Richard Guenther <rguenther@suse.de>
* tree-ssa-pre.c (get_or_alloc_expr_for_name): Avoid redundant

17
gcc/cgraphunit.c
View File

@ -1,5 +1,5 @@
/* Callgraph based interprocedural optimizations.
Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009
Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Contributed by Jan Hubicka
@ -2323,20 +2323,9 @@ cgraph_materialize_all_clones (void)
gimple new_stmt;
gimple_stmt_iterator gsi;
if (e->callee->same_body)
{
struct cgraph_node *alias;
for (alias = e->callee->same_body;
alias;
alias = alias->next)
if (decl == alias->decl)
break;
/* Don't update call from same body alias to the real
function. */
if (alias)
if (cgraph_get_node (decl) == cgraph_get_node (e->callee->decl))
/* Don't update call from same body alias to the real function. */
continue;
}
if (cgraph_dump_file)
{

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2010-01-05 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/42508
* g++.dg/opt/pr42508.C: New test.
2010-01-05 Tobias Burnus <burnus@net-b.de>
PR fortran/41872

33
gcc/testsuite/g++.dg/opt/pr42508.C Normal file
View File

@ -0,0 +1,33 @@
// PR tree-optimization/42508
// { dg-do run }
// { dg-options "-O1 -fipa-sra" }
extern "C" void abort ();
int v[10], vidx;
struct A
{
A *prev;
int i;
~A()
{
v[vidx++] = i;
delete prev;
}
};
int
main ()
{
A *a1 = new A ();
A *a2 = new A ();
a1->prev = 0;
a1->i = 1;
a2->prev = a1;
a2->i = 2;
delete a2;
if (vidx != 2 || v[0] != 2 || v[1] != 1)
abort ();
return 0;
}

12
gcc/tree-sra.c
View File

@ -3800,8 +3800,11 @@ convert_callers (struct cgraph_node *node, ipa_parm_adjustment_vec adjustments)
for (gsi = gsi_start_bb (this_block); !gsi_end_p (gsi); gsi_next (&gsi))
{
gimple stmt = gsi_stmt (gsi);
if (gimple_code (stmt) == GIMPLE_CALL
&& gimple_call_fndecl (stmt) == node->decl)
tree call_fndecl;
if (gimple_code (stmt) != GIMPLE_CALL)
continue;
call_fndecl = gimple_call_fndecl (stmt);
if (call_fndecl && cgraph_get_node (call_fndecl) == node)
{
if (dump_file)
fprintf (dump_file, "Adjusting recursive call");
@ -3819,6 +3822,11 @@ convert_callers (struct cgraph_node *node, ipa_parm_adjustment_vec adjustments)
static void
modify_function (struct cgraph_node *node, ipa_parm_adjustment_vec adjustments)
{
struct cgraph_node *alias;
for (alias = node->same_body; alias; alias = alias->next)
ipa_modify_formal_parameters (alias->decl, adjustments, "ISRA");
/* current_function_decl must be handled last, after same_body aliases,
as following functions will use what it computed. */
ipa_modify_formal_parameters (current_function_decl, adjustments, "ISRA");
scan_function (sra_ipa_modify_expr, sra_ipa_modify_assign,
replace_removed_params_ssa_names, false, adjustments);