gcc/testsuite/gcc.dg/vect/vect-gather-3.c

   1 #include "tree-vect.h"
   2
   3 #define N 16
   4
   5 void __attribute__((noipa))
   6 f (int *restrict y, int *restrict x, int *restrict indices)
   7 {
   8   for (int i = 0; i < N; ++i)
   9     {
  10       y[i * 2] = (indices[i * 2] < N * 2
  11                   ? x[indices[i * 2]] + 1
  12                   : 1);
  13       y[i * 2 + 1] = (indices[i * 2 + 1] < N * 2
  14                       ? x[indices[i * 2 + 1]] + 2
  15                       : 2);
  16     }
  17 }
  18
  19 int y[N * 2];
  20 int x[N * 2] = {
  21   72704, 52152, 51301, 96681,
  22   57937, 60490, 34504, 60944,
  23   42225, 28333, 88336, 74300,
  24   29250, 20484, 38852, 91536,
  25   86917, 63941, 31590, 21998,
  26   22419, 26974, 28668, 13968,
  27   3451, 20247, 44089, 85521,
  28   22871, 87362, 50555, 85939
  29 };
  30 int indices[N * 2] = {
  31   15, 0x10000, 0xcafe0, 19,
  32   7, 22, 19, 1,
  33   0x20000, 0x70000, 15, 30,
  34   5, 12, 11, 11,
  35   10, 25, 5, 20,
  36   22, 24, 32, 28,
  37   30, 19, 6, 0xabcdef,
  38   7, 12, 8, 21
  39 };
  40 int expected[N * 2] = {
  41   91537, 2, 1, 22000,
  42   60945, 28670, 21999, 52154,
  43   1, 2, 91537, 50557,
  44   60491, 29252, 74301, 74302,
  45   88337, 20249, 60491, 22421,
  46   28669, 3453, 1, 22873,
  47   50556, 22000, 34505, 2,
  48   60945, 29252, 42226, 26976
  49 };
  50
  51 int
  52 main (void)
  53 {
  54   check_vect ();
  55
  56   f (y, x, indices);
  57 #pragma GCC novector
  58   for (int i = 0; i < 32; ++i)
  59     if (y[i] != expected[i])
  60       __builtin_abort ();
  61
  62   return 0;
  63 }
  64
  65 /* { dg-final { scan-tree-dump "Loop contains only SLP stmts" vect { target { { vect_gather_load_ifn || avx2 } && vect_masked_load } } } } */