gcc/testsuite/gcc.dg/vect/vect-align-2.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdlib.h>
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 /* Compile time unknown misalignment. Cannot use loop peeling to align
   8    the store.  */
   9
  10 #define N 17
  11
  12 struct foo {
  13   char x0;
  14   int y[N][N];
  15 } __attribute__ ((packed));
  16
  17 struct foo f2;
  18 int z[16] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  19
  20 __attribute__ ((noinline))
  21 void fbar(struct foo *fp)
  22 {
  23   int i,j;
  24    for (i=0; i<N; i++)
  25       for (j=0; j<N; j++)
  26         f2.y[i][j] = z[i];
  27
  28    for (i=0; i<N; i++)
  29       for (j=0; j<N; j++)
  30         if (f2.y[i][j] != z[i])
  31           abort ();
  32 }
  33
  34 int main (void)
  35 {
  36   struct foo  *fp = (struct foo *) malloc (2*sizeof (struct foo));
  37
  38   check_vect ();
  39
  40   fbar(fp);
  41   return 0;
  42 }
  43
  44
  45 /* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 0 "vect" } } */
  46 /* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 1 "vect" } } */
  47 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  48 /* { dg-final { cleanup-tree-dump "vect" } } */