gcc/testsuite/gcc.dg/vect/no-vfa-vect-45.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 __attribute__ ((noinline))
   9 void bar (const float *pa, const float *pb, const float *pc)
  10 {
  11   int i;
  12
  13   /* check results:  */
  14 #pragma GCC novector
  15   for (i = 0; i < N; i++)
  16     {
  17       if (pa[i] != (pb[i] * pc[i]))
  18         abort ();
  19     }
  20
  21   return;
  22 }
  23
  24 /* Unaligned pointer accesses, with unknown alignment.
  25    The loop bound is known and divisible by the vectorization factor.
  26    Can't prove that the pointers don't alias.
  27    vect-51.c is similar to this one with one difference:
  28         the loop bound is unknown.
  29    vect-44.c is similar to this one with one difference:
  30         Aliasing is not a problem.  */
  31
  32 __attribute__ ((noinline)) int
  33 main1 (float *pa, float *pb, float *pc)
  34 {
  35   int i;
  36
  37   for (i = 0; i < N; i++)
  38     {
  39       pa[i] = pb[i] * pc[i];
  40     }
  41
  42   bar (pa,pb,pc);
  43
  44   return 0;
  45 }
  46
  47 int main (void)
  48 {
  49   int i;
  50   float a[N];
  51   float b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
  52   float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
  53
  54   check_vect ();
  55
  56   main1 (a,b,c);
  57   return 0;
  58 }
  59
  60 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail *-*-* } } } */