gcc/testsuite/gcc.dg/vect/vect-100.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdlib.h>
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 #define N 9
   8
   9 struct extraction
  10 {
  11   int a[N];
  12   int b[N];
  13 };
  14
  15 static int a[N] = {1,2,3,4,5,6,7,8,9};
  16 static int b[N] = {2,3,4,5,6,7,8,9,0};
  17
  18 __attribute__ ((noinline))
  19 int main1 () {
  20   int i;
  21   struct extraction *p;
  22
  23   p = (struct extraction *) malloc (sizeof (struct extraction));
  24
  25   /* Vectorizable: alias analysis determines that p can't point to a and/or b.  */
  26   for (i = 0; i < N; i++)
  27     {
  28       p->a[i] = a[i];
  29       p->b[i] = b[i];
  30     }
  31
  32   /* check results: */
  33   for (i = 0; i < N; i++)
  34     {
  35        if (p->a[i] != a[i] || p->b[i] != b[i])
  36          abort();
  37     }
  38
  39   return 0;
  40 }
  41
  42 __attribute__ ((noinline))
  43 int main2 () {
  44   int i;
  45   int c[N] = {1,2,3,4,5,6,7,8,9};
  46   int d[N] = {2,3,4,5,6,7,8,9,0};
  47   struct extraction *p;
  48   p = (struct extraction *) malloc (sizeof (struct extraction));
  49
  50   /* Vectorizable: c and d are local arrays.  */
  51   for (i = 0; i < N; i++)
  52     {
  53       p->a[i] = c[i];
  54       p->b[i] = d[i];
  55     }
  56
  57   /* check results: */
  58   for (i = 0; i < N; i++)
  59     {
  60        if (p->a[i] != c[i] || p->b[i] != d[i])
  61          abort();
  62     }
  63
  64   return 0;
  65 }
  66
  67 int main (void)
  68 {
  69   check_vect ();
  70
  71   main1 ();
  72   main2 ();
  73
  74   return 0;
  75 }
  76
  77 /* Requires versioning.  */
  78 /* { dg-final { scan-tree-dump-times "vectorized 2 loops" 0 "vect" } } */
  79 /* { dg-final { cleanup-tree-dump "vect" } } */
  80