gcc/testsuite/gcc.dg/vect/pr113281-3.c

   1 /* { dg-do compile } */
   2
   3 #define N 128
   4
   5 short x[N];
   6 short y[N];
   7
   8 void
   9 f1 (void)
  10 {
  11   for (int i = 0; i < N; ++i)
  12     x[i] >>= (y[i] < 30 ? y[i] : 30);
  13 }
  14
  15 void
  16 f2 (void)
  17 {
  18   for (int i = 0; i < N; ++i)
  19     x[i] >>= ((y[i] & 15) + 2);
  20 }
  21
  22 void
  23 f3 (void)
  24 {
  25   for (int i = 0; i < N; ++i)
  26     x[i] >>= (y[i] < 16 ? y[i] : 16);
  27 }
  28
  29 void
  30 f4 (void)
  31 {
  32   for (int i = 0; i < N; ++i)
  33     x[i] = 32768 >> ((y[i] & 15) + 3);
  34 }
  35
  36 /* { dg-final { scan-tree-dump {can narrow to signed:31 without loss [^\n]+>>} "vect" } } */
  37 /* { dg-final { scan-tree-dump {can narrow to signed:18 without loss [^\n]+>>} "vect" } } */
  38 /* { dg-final { scan-tree-dump {can narrow to signed:17 without loss [^\n]+>>} "vect" } } */
  39 /* { dg-final { scan-tree-dump {can narrow to unsigned:19 without loss [^\n]+>>} "vect" } } */