re PR target/78796 (TLS fails to link on aarch64 with -mcmodel=large)

	PR target/78796
	* gcc.dg/tls/pr78796.c: New test.

From-SVN: r243645

gcc/testsuite/ChangeLog

+2016-12-14  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/78796
+	* gcc.dg/tls/pr78796.c: New test.
+
 2016-12-14  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/78731

gcc/testsuite/gcc.dg/tls/pr78796.c

+/* PR target/78796 */
+/* { dg-do run } */
+/* { dg-options "-O2" } */
+/* { dg-additional-options "-mcmodel=large" { target aarch64-*-* } } */
+/* { dg-require-effective-target tls } */
+
+struct S { int a, b, c, d, e; };
+struct S t;
+__thread struct S s;
+
+__attribute__((used, noinline, noclone)) void
+foo (int *x, int *y)
+{
+  asm volatile ("" : : "g" (x), "g" (y) : "memory");
+  if (*x != 1 || *y != 2)
+    __builtin_abort ();
+}
+
+__attribute__((used, noinline, noclone)) void
+bar (void)
+{
+  foo (&t.c, &s.c);
+}
+
+int
+main ()
+{
+  t.c = 1;
+  s.c = 2;
+  bar ();
+  return 0;
+}