gcc/testsuite/gcc.dg/vect/pr63341-2.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, {{0x5010}, {0x5111}, {0x5212}, {0x5313}, {0x5414}, {0x5515}, {0x5616}, {0x5717},
   8                   {0x5818}, {0x5919}, {0x5a1a}, {0x5b1b}, {0x5c1c}, {0x5d1d}, {0x5e1e}, {0x5f1f},
   9                   {0x6020}, {0x6121}, {0x6222}, {0x6323}, {0x6424}, {0x6525}, {0x6626}, {0x6727},
  10                   {0x6828}, {0x6929}, {0x6a2a}, {0x6b2b}, {0x6c2c}, {0x6d2d}, {0x6e2e}, {0x6f2f}}};
  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 + 4;
  19   for (i = 0; i < 32; i++)
  20     if (d[i] != t.s[i].s + 4)
  21       abort ();
  22     else
  23       asm volatile ("" : : : "memory");
  24 }
  25
  26 int
  27 main ()
  28 {
  29   check_vect ();
  30   foo ();
  31   return 0;
  32 }
  33