Fix endian issue in pr91656 testcases

	PR testsuite/91676
	PR rtl-optimization/91656
	* gcc.dg/torture/pr91656-1.c: Correct for big and pdp endian.
	* gcc.dg/torture/pr91656-2.c: Likewise.
	* gcc.dg/torture/pr91656-3.c: Likewise.

From-SVN: r276236

gcc/testsuite/ChangeLog

+2019-09-28  Alan Modra  <amodra@gmail.com>
+
+	PR testsuite/91676
+	PR rtl-optimization/91656
+	* gcc.dg/torture/pr91656-1.c: Correct for big and pdp endian.
+	* gcc.dg/torture/pr91656-2.c: Likewise.
+	* gcc.dg/torture/pr91656-3.c: Likewise.
+
 2019-09-27  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/88203

gcc/testsuite/gcc.dg/torture/pr91656-1.c

@@ -6,7 +6,17 @@ int a, b, c, d, e;
 static __attribute__ ((__noipa__))
 int foo (int i)
 {
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
   __builtin_memmove (&i, &e, 1);
+#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+  __builtin_memmove ((char *) &i + sizeof (i) - 1,
+		     (char *) &e + sizeof (e) - 1, 1);
+#elif __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__
+  __builtin_memmove ((char *) &i + sizeof (i) - 2,
+		     (char *) &e + sizeof (e) - 2, 1);
+#else
+#error "endian unknown?"
+#endif
   if (a > 0)
     i /= e;
   e /= 5;

gcc/testsuite/gcc.dg/torture/pr91656-2.c

@@ -12,7 +12,17 @@ d (u16 g)
 {
   u64 f = __builtin_bswap64 (c);
   f = g == a;
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
   __builtin_memmove (&f, &e, 1);
+#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+  __builtin_memmove ((char *) &f + sizeof (f) - 1,
+		     (char *) &e + sizeof (e) - 1, 1);
+#elif __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__
+  __builtin_memmove ((char *) &f + sizeof (f) - 2,
+		     (char *) &e + sizeof (e) - 2, 1);
+#else
+#error "endian unknown?"
+#endif
   e >>= b;
   return a + f;
 }

gcc/testsuite/gcc.dg/torture/pr91656-3.c

@@ -10,7 +10,14 @@ int
 d (u16 e, u64 f)
 {
   b |= e;
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
   __builtin_memset (&f, e, 2);
+#elif (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ \
+       || __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__)
+  __builtin_memset ((char *) &f + sizeof (f) - 2, e, 2);
+#else
+#error "endian unknown?"
+#endif
   a = (u16) - e >= 2 ? : __builtin_popcountll (f);
   return a + c;
 }