Provide SPARCv9 MAXALIGN in gcc.target/sparc/attr-aligned.c (PR testsuite/88208)

	PR testsuite/88208
	* gcc.target/sparc/attr-aligned.c (MAXALIGN) [__sparcv9 ||
	__arch64__]: Define.

From-SVN: r266825

gcc/testsuite/ChangeLog

 2018-12-05  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
+	PR testsuite/88208
+	* gcc.target/sparc/attr-aligned.c (MAXALIGN) [__sparcv9 ||
+	__arch64__]: Define.
+
+2018-12-05  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
 	* gcc.target/sparc/20181129-1.c: Compile with -std=c99.
 	* gcc.target/sparc/20181129-2.c: Likewise.
 

gcc/testsuite/gcc.target/sparc/attr-aligned.c

@@ -10,7 +10,11 @@
 #define HAS_ALIGN(f, n)  __builtin_has_attribute (f, __aligned__ (n))
 
 #define MINALIGN(N)   ((N) < 4 ? 4 : (N))
+#if defined(__sparcv9) || defined(__arch64__)
+#define MAXALIGN      16
+#else
 #define MAXALIGN      8
+#endif
 
 /* No alignment specified.  */
 void f (void) { }