re PR tree-optimization/43879 (-fipa-pta causes various miscompilations)

2010-04-28  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/43879
	PR tree-optimization/43909
	* tree-ssa-structalias.c (struct variable_info): Add
	only_restrict_pointers flag.
	(new_var_info): Initialize it.  Increment stats.total_vars here.
	(create_function_info_for): Do not increment stats.total_vars
	here.
	(get_function_part_constraint): Fix build with C++.
	(insert_into_field_list): Remove.
	(push_fields_onto_fieldstack): Properly merge fields.
	(create_variable_info_for): Split and simplify.
	(create_variable_info_for_1): New piece.
	(intra_create_variable_infos): Properly make restrict constraints
	from parameters.

	* gcc.dg/ipa/ipa-pta-14.c: Adjust.

From-SVN: r158825

gcc/ChangeLog

 2010-04-28  Richard Guenther  <rguenther@suse.de>
 
+	PR tree-optimization/43879
+	PR tree-optimization/43909
+	* tree-ssa-structalias.c (struct variable_info): Add
+	only_restrict_pointers flag.
+	(new_var_info): Initialize it.  Increment stats.total_vars here.
+	(create_function_info_for): Do not increment stats.total_vars
+	here.
+	(get_function_part_constraint): Fix build with C++.
+	(insert_into_field_list): Remove.
+	(push_fields_onto_fieldstack): Properly merge fields.
+	(create_variable_info_for): Split and simplify.
+	(create_variable_info_for_1): New piece.
+	(intra_create_variable_infos): Properly make restrict constraints
+	from parameters.
+
+2010-04-28  Richard Guenther  <rguenther@suse.de>
+
 	PR c++/43880
 	* tree-inline.c (copy_bind_expr): Also copy bind expr vars
 	value-exprs.

gcc/testsuite/ChangeLog

 2010-04-28  Richard Guenther  <rguenther@suse.de>
 
+	PR tree-optimization/43879
+	PR tree-optimization/43909
+	* gcc.dg/ipa/ipa-pta-14.c: Adjust.
+
+2010-04-28  Richard Guenther  <rguenther@suse.de>
+
 	PR c++/43880
 	* g++.dg/torture/pr43880.C: New testcase.
 

gcc/testsuite/gcc.dg/ipa/ipa-pta-14.c

@@ -21,8 +21,8 @@ int main()
   void *p;
   a.p = (void *)&c;
   p = foo(&a, &a);
-  /* { dg-final { scan-ipa-dump "foo.result = { NULL a c }" "pta" { xfail *-*-* } } } */
-  /* { dg-final { scan-ipa-dump "foo.result = { NULL a a\[^ \]* c }" "pta" } } */
+  /* { dg-final { scan-ipa-dump "foo.result = { NULL a\[^ \]* c\[^ \]* }" "pta" { xfail *-*-* } } } */
+  /* { dg-final { scan-ipa-dump "foo.result = { NULL a\[^ \]* a\[^ \]* c\[^ \]* }" "pta" } } */
   ((struct X *)p)->p = (void *)0;
   if (a.p != (void *)0)
     abort ();