[testsuite] Add nvptx xfail to pr84512.c

2018-03-19  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/tree-ssa/pr84512.c: Don't require effective target
	vect_int_mult.  Add nvptx xfail for PR84958.

From-SVN: r258656

gcc/testsuite/ChangeLog

+2018-03-19  Tom de Vries  <tom@codesourcery.com>
+
+	* gcc.dg/tree-ssa/pr84512.c: Don't require effective target
+	vect_int_mult.  Add nvptx xfail for PR84958.
+
 2018-03-19  Nathan Sidwell  <nathan@acm.org>
 
 	PR c++/84835

gcc/testsuite/gcc.dg/tree-ssa/pr84512.c

 /* { dg-do compile } */
 /* { dg-options "-O3 -fdump-tree-optimized" } */
-/* { dg-require-effective-target vect_int_mult } */
 
 int foo()
 {
@@ -13,4 +12,5 @@ int foo()
   return res;
 }
 
-/* { dg-final { scan-tree-dump "return 285;" "optimized" } } */
+/* Target nvptx xfail due to PR84958.  */
+/* { dg-final { scan-tree-dump "return 285;" "optimized" { xfail nvptx*-*-* } } } */