re PR tree-optimization/44050 (Wrong code is produced with -fipa-pta -fno-tree-pta)

2010-05-10  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/44050
	* tree-inline.c (tree_function_versioning): Clone the ipa-pta
	flag.

	* gcc.dg/torture/pr44050.c: New testcase.

From-SVN: r159214

gcc/ChangeLog

+2010-05-10  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/44050
+	* tree-inline.c (tree_function_versioning): Clone the ipa-pta
+	flag.
+
 2010-05-10  Wei Guozhi  <carrot@google.com>
 
 	PR target/42879

gcc/testsuite/ChangeLog

+2010-05-10  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/44050
+	* gcc.dg/torture/pr44050.c: New testcase.
+
 2010-05-10  Wei Guozhi  <carrot@google.com>
 
 	PR target/42879

gcc/testsuite/gcc.dg/torture/pr44050.c

+/* { dg-do run } */
+/* { dg-options "-fno-tree-pta" } */
+
+static void __attribute__((noinline))
+foo (int *i, int n)
+{
+  *i = n;
+}
+
+int
+main (void)
+{
+  int i = 0;
+  foo (&i, 1);
+
+  if (i != 1)
+    __builtin_abort ();
+
+  return 0;
+}
+

gcc/tree-inline.c

@@ -4924,6 +4924,8 @@ tree_function_versioning (tree old_decl, tree new_decl,
     (DECL_STRUCT_FUNCTION (old_decl));
   initialize_cfun (new_decl, old_decl,
 		   old_entry_block->count);
+  DECL_STRUCT_FUNCTION (new_decl)->gimple_df->ipa_pta
+    = id.src_cfun->gimple_df->ipa_pta;
   push_cfun (DECL_STRUCT_FUNCTION (new_decl));
 
   /* Copy the function's static chain.  */