gcc/testsuite/gcc.dg/pr96239.c

   1 /* PR tree-optimization/96239 */
   2 /* { dg-do run { target { ilp32 || lp64 } } } */
   3 /* { dg-options "-O2 -fdump-tree-optimized" } */
   4 /* { dg-final { scan-tree-dump-times " r>> 8;" 1 "optimized" { target bswap } } } */
   5 /* { dg-final { scan-tree-dump-times " = __builtin_bswap64 " 1 "optimized" { target bswap } } } */
   6 /* { dg-final { scan-tree-dump-not " >> \(8\|16\|24\|32\|40\|48\|56\);" "optimized" { target bswap } } } */
   7
   8 typedef unsigned char V __attribute__((vector_size (2)));
   9 typedef unsigned char W __attribute__((vector_size (8)));
  10
  11 __attribute__((noipa)) void
  12 foo (unsigned short x, V *p)
  13 {
  14   *p = (V) { x >> 8, x };
  15 }
  16
  17 __attribute__((noipa)) void
  18 bar (unsigned long long x, W *p)
  19 {
  20   *p = (W) { x >> 56, x >> 48, x >> 40, x >> 32, x >> 24, x >> 16, x >> 8, x };
  21 }
  22
  23 __attribute__((noipa)) void
  24 baz (unsigned short x, V *p)
  25 {
  26   *p = (V) { x, x >> 8 };
  27 }
  28
  29 __attribute__((noipa)) void
  30 qux (unsigned long long x, W *p)
  31 {
  32   *p = (W) { x, x >> 8, x >> 16, x >> 24, x >> 32, x >> 40, x >> 48, x >> 56 };
  33 }
  34
  35 int
  36 main ()
  37 {
  38   V a, c, e, g;
  39   W b, d, f, h;
  40   foo (0xcafe, &a);
  41   bar (0xdeadbeefcafebabeULL, &b);
  42   baz (0xdead, &c);
  43   qux (0xfeedbac1beefdeadULL, &d);
  44   e = (V) { 0xca, 0xfe };
  45   f = (W) { 0xde, 0xad, 0xbe, 0xef, 0xca, 0xfe, 0xba, 0xbe };
  46   g = (V) { 0xad, 0xde };
  47   h = (W) { 0xad, 0xde, 0xef, 0xbe, 0xc1, 0xba, 0xed, 0xfe };
  48   if (__builtin_memcmp (&a, &e, sizeof (V))
  49       || __builtin_memcmp (&b, &f, sizeof (W))
  50       || __builtin_memcmp (&c, &g, sizeof (V))
  51       || __builtin_memcmp (&d, &h, sizeof (W)))
  52     __builtin_abort ();
  53   return 0;
  54 }