gcc/testsuite/gcc.dg/vect/bb-slp-over-widen-2.c

   1 /* { dg-require-effective-target vect_int } */
   2 /* { dg-require-effective-target vect_shift } */
   3 /* { dg-require-effective-target vect_pack_trunc } */
   4 /* { dg-require-effective-target vect_unpack } */
   5
   6 #include "tree-vect.h"
   7
   8 /* Deliberate use of signed >>.  */
   9 #define DEF_LOOP(SIGNEDNESS)                    \
  10   void __attribute__ ((noipa))                  \
  11   f_##SIGNEDNESS (SIGNEDNESS char *restrict a,  \
  12                   SIGNEDNESS char *restrict b,  \
  13                   SIGNEDNESS char c)            \
  14   {                                             \
  15     a[0] = (b[0] + c) >> 1;                     \
  16     a[1] = (b[1] + c) >> 1;                     \
  17     a[2] = (b[2] + c) >> 1;                     \
  18     a[3] = (b[3] + c) >> 1;                     \
  19     a[4] = (b[4] + c) >> 1;                     \
  20     a[5] = (b[5] + c) >> 1;                     \
  21     a[6] = (b[6] + c) >> 1;                     \
  22     a[7] = (b[7] + c) >> 1;                     \
  23     a[8] = (b[8] + c) >> 1;                     \
  24     a[9] = (b[9] + c) >> 1;                     \
  25     a[10] = (b[10] + c) >> 1;                   \
  26     a[11] = (b[11] + c) >> 1;                   \
  27     a[12] = (b[12] + c) >> 1;                   \
  28     a[13] = (b[13] + c) >> 1;                   \
  29     a[14] = (b[14] + c) >> 1;                   \
  30     a[15] = (b[15] + c) >> 1;                   \
  31   }
  32
  33 DEF_LOOP (signed)
  34 DEF_LOOP (unsigned)
  35
  36 #define N 16
  37
  38 #define TEST_LOOP(SIGNEDNESS, BASE_B, C)                \
  39   {                                                     \
  40     SIGNEDNESS char a[N], b[N], c[N];                   \
  41     for (int i = 0; i < N; ++i)                         \
  42       {                                                 \
  43         b[i] = BASE_B + i * 15;                         \
  44         asm volatile ("" ::: "memory");                 \
  45       }                                                 \
  46     f_##SIGNEDNESS (a, b, C);                           \
  47     for (int i = 0; i < N; ++i)                         \
  48       if (a[i] != (BASE_B + C + i * 15) >> 1)           \
  49         __builtin_abort ();                             \
  50   }
  51
  52 int
  53 main (void)
  54 {
  55   check_vect ();
  56
  57   TEST_LOOP (signed, -128, -120);
  58   TEST_LOOP (unsigned, 4, 250);
  59
  60   return 0;
  61 }
  62
  63 /* { dg-final { scan-tree-dump "demoting int to signed short" "slp2" { target { ! vect_widen_shift } } } } */
  64 /* { dg-final { scan-tree-dump "demoting int to unsigned short" "slp2" { target { ! vect_widen_shift } } } } */
  65 /* { dg-final { scan-tree-dump-times "basic block vectorized" 2 "slp2" } } */