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

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