Add a testcase for PR bootstrap/66978

	PR bootstrap/66978
	* gcc.target/i386/pr66978.c: New test.

From-SVN: r226150

gcc/testsuite/ChangeLog

+2015-07-24  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR bootstrap/66978
+	* gcc.target/i386/pr66978.c: New test.
+
 2015-07-24  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>
 
 	* gcc.target/s390/gpr2fprsavecfi.c: New test.

gcc/testsuite/gcc.target/i386/pr66978.c

+/* { dg-do compile { target { ! { ia32 } } } } */
+/* { dg-require-effective-target maybe_x32 } */
+/* { dg-options "-O2 -mx32 -maddress-mode=short" } */
+
+extern int foo (int *);
+int
+bar (int *p)
+{
+  __attribute__ ((noinline, noclone))
+  int hack_digit (void)
+    {
+      return foo (p);
+    }
+  return hack_digit ();
+}