gcc/testsuite/gcc.dg/vect/vect-29.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 /* { dg-add-options bind_pic_locally } */
   5
   6 #include <stdarg.h>
   7 #include "tree-vect.h"
   8
   9 #define N 128
  10 #define OFF 3
  11
  12 /* unaligned load.  */
  13
  14 int ia[N];
  15 int ib[N+OFF];
  16
  17 __attribute__ ((noinline))
  18 int main1 (int off)
  19 {
  20   int i;
  21
  22   for (i = 0; i < N+OFF; i++)
  23     {
  24       ib[i] = i;
  25     }
  26
  27   for (i = 0; i < N; i++)
  28     {
  29       ia[i] = ib[i+off];
  30     }
  31
  32   /* check results:  */
  33 #pragma GCC novector
  34   for (i = 0; i < N; i++)
  35     {
  36       if (ia[i] != ib[i+off])
  37         abort ();
  38     }
  39
  40   return 0;
  41 }
  42
  43 int main (void)
  44 {
  45   check_vect ();
  46
  47   main1 (0); /* aligned */
  48   main1 (OFF); /* unaligned */
  49   return 0;
  50 }
  51
  52 /* For targets that don't support misaligned loads we version for the load.
  53    (The store is aligned).  */
  54
  55 /* The initialization induction loop (with aligned access) is also vectorized.  */
  56 /* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect" } } */
  57 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 1 "vect" { xfail { ! vect_unaligned_possible } } } } */
  58 /* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 0 "vect" } } */
  59 /* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning." 1 "vect" {target { vect_no_align && { ! vect_hw_misalign } } } } } */
  60 /* { dg-final { scan-tree-dump-not "Invalid sum" "optimized" } } */