gcc/testsuite/gcc.dg/vect/Os-vect-95.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 *pd, float *pa, float *pb, float *pc)
   9 {
  10   int i;
  11
  12   /* check results:  */
  13 #pragma GCC novector
  14   for (i = 0; i < N; i++)
  15     {
  16       if (pa[i] != (pb[i] * pc[i]))
  17         abort ();
  18       if (pd[i] != 5.0)
  19         abort ();
  20     }
  21
  22   return;
  23 }
  24
  25
  26 int
  27 main1 (int n, float * __restrict__ pd, float * __restrict__ pa, float * __restrict__ pb, float * __restrict__ pc)
  28 {
  29   int i;
  30
  31   for (i = 0; i < n; i++)
  32     {
  33       pa[i] = pb[i] * pc[i];
  34       pd[i] = 5.0;
  35     }
  36
  37   bar (pd,pa,pb,pc);
  38
  39   return 0;
  40 }
  41
  42 int main (void)
  43 {
  44   int i;
  45   float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
  46   float d[N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
  47   float b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
  48   float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
  49
  50   check_vect ();
  51
  52   main1 (N,&d[1],a,b,c);
  53   main1 (N-2,&d[1],a,b,c);
  54
  55   return 0;
  56 }
  57
  58 /* { dg-final { scan-tree-dump-times "vectorized 0 loops" 2 "vect" } } */
  59 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0 "vect" } } */
  60 /* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 0 "vect" } } */