re PR rtl-optimization/50290 (ICE: in distribute_notes, at combine.c:13282 with…

re PR rtl-optimization/50290 (ICE: in distribute_notes, at combine.c:13282 with -O2 -fwhole-program -fno-tree-loop-optimize -fno-tree-vrp -funroll-loops)

	PR rtl-optimization/50290
	* gcc.dg/pr50290.c: New test.

From-SVN: r181694

gcc/testsuite/ChangeLog

+2011-11-24  Jakub Jelinek  <jakub@redhat.com>
+
+	PR rtl-optimization/50290
+	* gcc.dg/pr50290.c: New test.
+
 2011-11-24  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/51290

gcc/testsuite/gcc.dg/pr50290.c

+/* PR rtl-optimization/50290 */
+/* { dg-do run } */
+/* { dg-options "-O2 -fno-tree-loop-optimize -fno-tree-vrp -funroll-loops" } */
+
+static int
+bar (int t[], int b)
+{
+  int i;
+  for (i = 0; i < b; i++)
+    t[i] = i + (i > 0 ? t[i - 1] : 0);
+  return t[b - 1];
+}
+
+static int
+foo (int b)
+{
+  int x[b];
+  return bar (x, b);
+}
+
+int
+main ()
+{
+  if (foo (6) != 15)
+    __builtin_abort ();
+  return 0;
+}