gcc/testsuite/gcc.dg/vect/vect-43.c

   1 /* { dg-require-effective-target vect_float } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 256
   7
   8 void bar (float *pa, float *pb, float *pc)
   9 {
  10   int i;
  11
  12   /* check results:  */
  13   for (i = 0; i < N; i++)
  14     {
  15       if (pa[i] != (pb[i] * pc[i]))
  16         abort ();
  17     }
  18
  19   return;
  20 }
  21
  22
  23 int
  24 main1 (float *pa)
  25 {
  26   int i;
  27   float pb[N] __attribute__ ((__aligned__(16))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
  28   float pc[N] __attribute__ ((__aligned__(16))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
  29
  30  /* Not vectorizable: pa may alias pb and/or pc, since their addresses escape.  */
  31   for (i = 0; i < N; i++)
  32     {
  33       pa[i] = pb[i] * pc[i];
  34     }
  35
  36   bar (pa,pb,pc);
  37
  38   return 0;
  39 }
  40
  41 int
  42 main2 (float * pa)
  43 {
  44   int i;
  45   float pb[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
  46   float pc[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
  47
  48   /* Vectorizable: pb and pc addresses do not escape.  */
  49   for (i = 0; i < N; i++)
  50     {
  51       pa[i] = pb[i] * pc[i];
  52     }
  53
  54   /* check results:  */
  55   for (i = 0; i < N; i++)
  56     {
  57       if (pa[i] != (pb[i] * pc[i]))
  58         abort ();
  59     }
  60
  61   return 0;
  62 }
  63
  64 int main (void)
  65 {
  66   int i;
  67   float a[N] __attribute__ ((__aligned__(16)));
  68
  69   check_vect ();
  70
  71   main1 (a);
  72   main2 (a);
  73   return 0;
  74 }
  75
  76 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail vect_no_align } } } */
  77 /* { dg-final { cleanup-tree-dump "vect" } } */