rs6000: Fix testcase pr82015.c

It used "vector" but that is not defined.  Let's use __vector instead.


gcc/testsuite/
	* gcc.target/powerpc/pr82015.c: Use __vector instead of vector.

From-SVN: r259027

gcc/testsuite/ChangeLog

+2018-04-03  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	* gcc.target/powerpc/pr82015.c: Use __vector instead of vector.
+
 2018-04-03  Richard Biener  <rguenther@suse.de>
 
 	PR testsuite/85154

gcc/testsuite/gcc.target/powerpc/pr82015.c

@@ -3,12 +3,12 @@
 /* { dg-require-effective-target powerpc_vsx_ok } */
 /* { dg-options "-O2 -mvsx" } */
 
-unsigned long foo_11(vector __int128_t *p)
+unsigned long foo_11(__vector __int128_t *p)
 {
   return __builtin_unpack_vector_int128(*p, 11); /* { dg-error "argument 2 must be a 1-bit unsigned literal" } */
 }
 
-unsigned long foo_n(vector __int128_t *p, unsigned long n)
+unsigned long foo_n(__vector __int128_t *p, unsigned long n)
 {
   return __builtin_unpack_vector_int128(*p, n);	/* { dg-error "argument 2 must be a 1-bit unsigned literal" } */
 }