gcc-4_8-branch/gcc/testsuite/gcc.dg/vect/pr63341-2.c

   1 /* PR tree-optimization/63341 */
   2 /* { dg-do run } */
   3
   4 #include "tree-vect.h"
   5
   6 typedef union U { unsigned short s; unsigned char c; } __attribute__((packed)) U;
   7 struct S { char e __attribute__((aligned (64))); U s[32]; };
   8 struct S t = {0, {{0x5010}, {0x5111}, {0x5212}, {0x5313}, {0x5414}, {0x5515}, {0x5616}, {0x5717},
   9                   {0x5818}, {0x5919}, {0x5a1a}, {0x5b1b}, {0x5c1c}, {0x5d1d}, {0x5e1e}, {0x5f1f},
  10                   {0x6020}, {0x6121}, {0x6222}, {0x6323}, {0x6424}, {0x6525}, {0x6626}, {0x6727},
  11                   {0x6828}, {0x6929}, {0x6a2a}, {0x6b2b}, {0x6c2c}, {0x6d2d}, {0x6e2e}, {0x6f2f}}};
  12 unsigned short d[32] = { 1 };
  13
  14 __attribute__((noinline, noclone)) void
  15 foo ()
  16 {
  17   int i;
  18   for (i = 0; i < 32; i++)
  19     d[i] = t.s[i].s + 4;
  20   for (i = 0; i < 32; i++)
  21     if (d[i] != t.s[i].s + 4)
  22       abort ();
  23     else
  24       asm volatile ("" : : : "memory");
  25 }
  26
  27 int
  28 main ()
  29 {
  30   check_vect ();
  31   foo ();
  32   return 0;
  33 }
  34
  35 /* { dg-final { cleanup-tree-dump "vect" } } */