gnu/dist/gcc4/gcc/testsuite/gcc.dg/vect/vect-50.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 int
  23 main1 (int n, float * __restrict__ pa, float * __restrict__ pb, float * __restrict__ pc)
  24 {
  25   int i;
  26
  27   for (i = 0; i < n; i++)
  28     {
  29       pa[i] = pb[i] * pc[i];
  30     }
  31
  32   bar (pa,pb,pc);
  33
  34   return 0;
  35 }
  36
  37 /* Unaligned pointer accesses, with unknown alignment.
  38    The loop bound is unknown.
  39    No aliasing problems.
  40    vect-44.c is similar to this one with one difference:
  41         the loop bound is known.
  42    vect-51.c is similar to this one with one difference:
  43         can't prove that pointers don't alias.  */
  44
  45 int main (void)
  46 {
  47   int i;
  48   float a[N];
  49   float b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
  50   float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
  51
  52   check_vect ();
  53
  54   main1 (N,a,b,c);
  55   return 0;
  56 }
  57
  58 /* For targets that don't support misaligned loads we version for the
  59    all three accesses (peeling to align the store will not force the
  60    two loads to be aligned).  */
  61
  62 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  63 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 2 "vect" { xfail vect_no_align } } } */
  64 /* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 1 "vect" { xfail vect_no_align } } } */
  65 /* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning." 3 "vect" { target vect_no_align } } } */
  66 /* { dg-final { cleanup-tree-dump "vect" } } */