gcc/testsuite/gcc.dg/vect/pr63341-1.c

   1 /* PR tree-optimization/63341 */
   2
   3 #include "tree-vect.h"
   4
   5 typedef union U { unsigned short s; unsigned char c; } __attribute__((packed)) U;
   6 struct S { char e __attribute__((aligned (64))); U s[32]; };
   7 struct S t = {0, {{1}, {2}, {3}, {4}, {5}, {6}, {7}, {8},
   8                   {9}, {10}, {11}, {12}, {13}, {14}, {15}, {16},
   9                   {17}, {18}, {19}, {20}, {21}, {22}, {23}, {24},
  10                   {25}, {26}, {27}, {28}, {29}, {30}, {31}, {32}}};
  11 unsigned short d[32] = { 1 };
  12
  13 __attribute__((noinline, noclone)) void
  14 foo ()
  15 {
  16   int i;
  17   for (i = 0; i < 32; i++)
  18     d[i] = t.s[i].s;
  19   if (__builtin_memcmp (d, t.s, sizeof d))
  20     abort ();
  21 }
  22
  23 int
  24 main ()
  25 {
  26   check_vect ();
  27   foo ();
  28   return 0;
  29 }
  30