gcc/testsuite/gcc.dg/vect/vect-reduc-pattern-2a.c

   1 /* Disabling epilogues until we find a better way to deal with scans.  */
   2 /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
   3 /* { dg-require-effective-target vect_int } */
   4
   5 #include <stdarg.h>
   6 #include "tree-vect.h"
   7
   8 #if VECTOR_BITS > 128
   9 #define N (VECTOR_BITS * 2 / 16)
  10 #else
  11 #define N 16
  12 #endif
  13
  14 signed short data_sh[N] =
  15   { 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28 };
  16 #define SUM 210
  17
  18 __attribute__ ((noinline)) int
  19 foo ()
  20 {
  21   int i;
  22   signed int intsum = 0;
  23
  24   /* widenning sum: sum shorts into int.  */
  25   for (i = 0; i < N; i++)
  26     {
  27       intsum += data_sh[i];
  28     }
  29
  30   /* check results:  */
  31   if (intsum != SUM)
  32     abort ();
  33
  34   return 0;
  35 }
  36
  37 int
  38 main (void)
  39 {
  40   check_vect ();
  41   return foo ();
  42 }
  43
  44 /* { dg-final { scan-tree-dump-times "vect_recog_widen_sum_pattern: detected(?:(?!Analysis failed).)*Analysis succeeded" 1 "vect" { target vect_widen_sum_hi_to_si } } } */
  45 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_widen_sum_hi_to_si } } } */
  46 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 0 "vect" { target { ! vect_widen_sum_hi_to_si } } } } */