gcc/testsuite/gcc.target/powerpc/vsx-vectorize-1.c

   1 /* { dg-do compile } */
   2 /* { dg-skip-if "" { powerpc*-*-darwin* } } */
   3 /* { dg-options "-mdejagnu-cpu=power7 -O2 -ftree-vectorize -fno-tree-loop-distribute-patterns -fno-vect-cost-model -fdump-tree-vect-details" } */
   4 /* { dg-require-effective-target powerpc_vsx } */
   5
   6 /* Taken from vect/vect-align-1.c.  */
   7 #include <stdlib.h>
   8 #include <stdarg.h>
   9
  10 /* Compile time known misalignment. Cannot use loop peeling to align
  11    the store.  */
  12
  13 #define N 16
  14
  15 struct foo {
  16   char x;
  17   int y[N];
  18 } __attribute__((packed));
  19
  20 int x[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  21
  22 __attribute__ ((noinline)) int
  23 main1 (struct foo * __restrict__ p)
  24 {
  25   int i;
  26
  27   for (i = 0; i < N; i++)
  28     {
  29       p->y[i] = x[i];
  30     }
  31
  32   /* check results:  */
  33   for (i = 0; i < N; i++)
  34     {
  35       if (p->y[i] != x[i])
  36         abort ();
  37     }
  38   return 0;
  39 }
  40
  41
  42 int main (void)
  43 {
  44   int i;
  45   struct foo *p = malloc (2*sizeof (struct foo));
  46
  47   main1 (p);
  48   return 0;
  49 }
  50
  51 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0 "vect" } } */
  52 /* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 1 "vect" } } */
  53 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */