re PR lto/61786 (wrong code by LTO on x86_64-linux-gnu)

2014-07-14  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/61786
	* gcc.dg/torture/pr61786.c: New testcase.
	* gcc.dg/lto/pr61786_0.c: Likewise.
	* gcc.dg/lto/pr61786_1.c: Likewise.

From-SVN: r212515

gcc/testsuite/ChangeLog

 2014-07-14  Richard Biener  <rguenther@suse.de>
 
+	PR tree-optimization/61786
+	* gcc.dg/torture/pr61786.c: New testcase.
+	* gcc.dg/lto/pr61786_0.c: Likewise.
+	* gcc.dg/lto/pr61786_1.c: Likewise.
+
+2014-07-14  Richard Biener  <rguenther@suse.de>
+
 	PR tree-optimization/61757
 	PR tree-optimization/61783
 	PR tree-optimization/61787

gcc/testsuite/gcc.dg/lto/pr61786_0.c

+/* { dg-lto-do run } */
+/* { dg-lto-options { { -flto } } } */
+/* { dg-extra-ld-options "-O" } */
+
+int a, *c = &a, d;
+char b = 1;
+
+void
+fn1 (void)
+{
+  d = 1;
+lbl:
+  if (b == d)
+    {
+      d = *c;
+      if (b)
+	goto lbl;
+    }
+}
+
+int
+fn2 (void)
+{
+  fn1 ();
+  return 0;
+}
+

gcc/testsuite/gcc.dg/lto/pr61786_1.c

+int fn2 (void);
+
+int
+main ()
+{
+  fn2 ();
+  return 0;
+}

gcc/testsuite/gcc.dg/torture/pr61786.c

+/* { dg-do run } */
+
+int a, *c = &a, d; 
+char b = 1;
+
+void
+fn1 ()
+{
+  d = 1;
+lbl:
+  if (b == d)
+    {
+      d = *c;
+      if (b)
+	goto lbl;
+    }
+}
+
+int
+fn2 ()
+{
+  fn1 ();
+  return 0;
+}
+
+int
+main ()
+{
+  fn2 ();
+  return 0;
+}