gcc/testsuite/gcc.dg/vect/vect-75-big-array.c

   1 /* Disabling epilogues until we find a better way to deal with scans.  */
   2 /* { dg-additional-options "--param vect-epilogues-nomask=0 -fdump-tree-optimized-details-blocks" } */
   3 /* { dg-require-effective-target vect_int } */
   4
   5 #include <stdarg.h>
   6 #include "tree-vect.h"
   7
   8 #define N 120
   9 #define OFF 8
  10
  11 /* Check handling of accesses for which the "initial condition" -
  12    the expression that represents the first location accessed - is
  13    more involved than just an ssa_name.  */
  14
  15 int ib[N+OFF] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0, 1, 3, 5, 7, 11, 13, 17};
  16
  17 __attribute__ ((noinline))
  18 int main1 (int *ib)
  19 {
  20   int i;
  21   int ia[N];
  22
  23   for (i = OFF; i < N+OFF; i++)
  24     {
  25       ib[i] = ib[i%OFF]*(i/OFF);
  26       asm volatile ("" ::: "memory");
  27     }
  28   for (i = 0; i < N; i++)
  29     {
  30       ia[i] = ib[i+OFF];
  31     }
  32
  33
  34   /* check results:  */
  35   for (i = 0; i < N; i++)
  36     {
  37      if (ia[i] != ib[i+OFF])
  38         abort ();
  39     }
  40
  41   return 0;
  42 }
  43
  44 int main (void)
  45 {
  46   check_vect ();
  47
  48   main1 (ib);
  49   return 0;
  50 }
  51
  52
  53 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  54 /*  { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 1 "vect" { target { vect_no_align && { ! vect_hw_misalign } } } } } */
  55 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 2 "vect" { target { ! vect_align_stack_vars } xfail { ! vect_unaligned_possible } } } } */
  56 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 1 "vect" { target vect_align_stack_vars xfail { ! vect_unaligned_possible } } } } */
  57 /* { dg-final { scan-tree-dump-not "Invalid sum" "optimized" } } */