gcc/testsuite/gcc.dg/vect/bb-slp-42.c

   1 /* { dg-require-effective-target vect_int } */
   2 /* { dg-require-effective-target vect_perm } */
   3
   4 #include "tree-vect.h"
   5
   6 #define ARR_SIZE 1024
   7
   8 void __attribute__((noipa))
   9 foo (int a[][ARR_SIZE], int *b)
  10 {
  11   int i;
  12   for (i = 0; i < ARR_SIZE; ++i)
  13     {
  14       a[0][i] += b[0];
  15       a[1][i] += b[1];
  16       a[2][i] += b[2];
  17       a[3][i] += b[3];
  18     }
  19 }
  20
  21 int
  22 main ()
  23 {
  24   int a[4][ARR_SIZE];
  25   int b[4];
  26
  27   check_vect ();
  28
  29   for (int i = 0; i < 4; ++i)
  30     {
  31       b[i] = 20 * i;
  32       for (int j = 0; j < ARR_SIZE; ++j)
  33         a[i][j] = (i + 1) * ARR_SIZE - j;
  34     }
  35
  36   foo (a, b);
  37
  38   for (int i = 0; i < 4; ++i)
  39 #pragma GCC novector
  40     for (int j = 0; j < ARR_SIZE; ++j)
  41       if (a[i][j] != (i + 1) * ARR_SIZE - j + 20 * i)
  42         __builtin_abort ();
  43
  44   return 0;
  45
  46 }
  47
  48 /* See that we do not try to vectorize the uniform CTORs.  */
  49 /* { dg-final { scan-tree-dump-not "Analyzing vectorizable constructor" "slp1" } } */