gcc/testsuite/gcc.dg/vmx/bug-1.c

   1 #include <stdlib.h>
   2 #include <stdio.h>
   3 #include <stddef.h>
   4 #include <altivec.h>
   5
   6 #define NPAGES 20
   7 #define NSKIP 10
   8 static vector float big[NPAGES*4096/16] = { {1,1,1,1} };
   9 /* NPAGES pages worth.  */
  10
  11 static int failed;
  12
  13 static void f(vector float *p)
  14 {
  15   int i = 1;
  16   p = (vector float *)(((ptrdiff_t)p + 4095) & ~4095);
  17
  18   i += NSKIP;
  19   p += NSKIP*4096/16;
  20
  21   while (i < NPAGES)
  22     {
  23       if (!vec_all_eq(*p,((vector float){0,0,0,0})))
  24         {
  25           printf("*p isn't zero at 0x%p, page %d\n", p, i);
  26           failed++;
  27         }
  28       i++;
  29       p += 4096/16;
  30     }
  31 }
  32
  33 int main(void)
  34 {
  35   f(big);
  36   if (failed)
  37     abort ();
  38   return 0;
  39 }