gcc/testsuite/gcc.dg/vect/no-section-anchors-vect-31.c

   1 /* Disabling epilogues until we find a better way to deal with scans.  */
   2 /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
   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 /* N / 2 bytes has to be worth vectorizing even with peeling.  */
  10 #if VECTOR_BITS > 128
  11 #define N (VECTOR_BITS * 4 / 8)
  12 #else
  13 #define N 64
  14 #endif
  15
  16 struct t{
  17   int k[N];
  18   int l;
  19 };
  20
  21 struct s{
  22   char a;       /* aligned */
  23   char b[N-1];  /* unaligned (offset 1B) */
  24   char c[N];    /* aligned (offset NB) */
  25   struct t d;   /* aligned (offset 2NB) */
  26   struct t e;   /* unaligned (offset 2N+4N+4 B) */
  27 };
  28
  29 struct s tmp;
  30 __attribute__ ((noinline))
  31 int main1 ()
  32 {
  33   int i;
  34
  35   /* unaligned */
  36   for (i = 0; i < N/2; i++)
  37     {
  38       tmp.b[i] = 5;
  39     }
  40
  41   /* check results:  */
  42 #pragma GCC novector
  43   for (i = 0; i <N/2; i++)
  44     {
  45       if (tmp.b[i] != 5)
  46         abort ();
  47     }
  48
  49   /* aligned */
  50   for (i = 0; i < N/2; i++)
  51     {
  52       tmp.c[i] = 6;
  53     }
  54
  55   /* check results:  */
  56 #pragma GCC novector
  57   for (i = 0; i <N/2; i++)
  58     {
  59       if (tmp.c[i] != 6)
  60         abort ();
  61     }
  62
  63   /* aligned */
  64   for (i = 0; i < N/2; i++)
  65     {
  66       tmp.d.k[i] = 7;
  67     }
  68
  69   /* check results:  */
  70 #pragma GCC novector
  71   for (i = 0; i <N/2; i++)
  72     {
  73       if (tmp.d.k[i] != 7)
  74         abort ();
  75     }
  76
  77   /* unaligned */
  78   for (i = 0; i < N/2; i++)
  79     {
  80       tmp.e.k[i] = 8;
  81     }
  82
  83   /* check results:  */
  84 #pragma GCC novector
  85   for (i = 0; i <N/2; i++)
  86     {
  87       if (tmp.e.k[i] != 8)
  88         abort ();
  89     }
  90
  91   return 0;
  92 }
  93
  94 int main (void)
  95 {
  96   check_vect ();
  97
  98   return main1 ();
  99 }
 100
 101 /* { dg-final { scan-tree-dump-times "vectorized 4 loops" 1 "vect" } } */
 102 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0 "vect" } } */
 103 /* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 2 "vect" { xfail vect_element_align_preferred } } } */