gcc/testsuite/gcc.dg/vect/pr59354.c

   1 /* { dg-additional-options "-O3" } */
   2
   3 #include "tree-vect.h"
   4
   5 void abort (void);
   6
   7 unsigned int a[256];
   8 unsigned char b[256];
   9
  10 __attribute__ ((noinline)) void
  11 main1()
  12 {
  13   int i, z, x, y;
  14
  15   for(i = 0; i < 256; i++)
  16     {
  17       a[i] = i % 5;
  18       __asm__ volatile ("");
  19     }
  20
  21   for (z = 0; z < 16; z++)
  22     for (y = 0; y < 4; y++)
  23       for (x = 0; x < 4; x++)
  24         b[y*64 + z*4 + x] = a[z*16 + y*4 + x];
  25
  26   if (b[4] != 1)
  27     abort ();
  28 }
  29
  30 int main (void)
  31 {
  32   check_vect ();
  33
  34   main1 ();
  35
  36   return 0;
  37 }
  38
  39 /* { dg-final { scan-tree-dump "vectorized 1 loop" "vect" { target { vect_pack_trunc } } } } */