builtin-unreachable-6.c: New test.

2012-07-09  Tom de Vries  <tom@codesourcery.com>
	    Richard Guenther  <rguenther@suse.de>

	* gcc.dg/builtin-unreachable-6.c: New test.
	* gcc.dg/builtin-unreachable-5.c: New test.

Co-Authored-By: Richard Guenther <rguenther@suse.de>

From-SVN: r189384

gcc/testsuite/ChangeLog

+2012-07-09  Tom de Vries  <tom@codesourcery.com>
+	    Richard Guenther  <rguenther@suse.de>
+
+	* gcc.dg/builtin-unreachable-6.c: New test.
+	* gcc.dg/builtin-unreachable-5.c: New test.
+
 2012-07-07  Steven Bosscher  <steven@gcc.gnu.org>
 
 	PR tree-optimization/53881

gcc/testsuite/gcc.dg/builtin-unreachable-5.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-fab" } */
+
+int
+foo (int a)
+{
+  if (a <= 0)
+    {
+    L1:
+      __builtin_unreachable ();
+    }
+
+  if (a > 2)
+    goto L1;
+
+  return a > 0;
+}
+
+/* { dg-final { scan-tree-dump-times "if \\(" 0 "fab" } } */
+/* { dg-final { scan-tree-dump-times "goto" 0 "fab" } } */
+/* { dg-final { scan-tree-dump-times "L1:" 0 "fab" } } */
+/* { dg-final { scan-tree-dump-times "__builtin_unreachable" 0 "fab" } } */
+/* { dg-final { cleanup-tree-dump "fab" } } */

gcc/testsuite/gcc.dg/builtin-unreachable-6.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-fab" } */
+
+void
+foo (int b, int c)
+{
+  void *x = &&lab;
+  if (b)
+    {
+lab:
+      __builtin_unreachable ();
+    }
+lab2:
+  if (c)
+    x = &&lab2;
+  goto *x;
+}
+
+/* { dg-final { scan-tree-dump-times "lab:" 1 "fab" } } */
+/* { dg-final { scan-tree-dump-times "__builtin_unreachable" 1 "fab" } } */
+/* { dg-final { cleanup-tree-dump "fab" } } */