gcc/testsuite/gcc.dg/tree-ssa/mulexactdiv-8.c

   1 /* { dg-options "-O2 -fdump-tree-optimized-raw" } */
   2
   3 #define TEST_CMP(FN, DIV, ADD, MUL)             \
   4   int                                           \
   5   FN (int x)                                    \
   6   {                                             \
   7     if (x & 7)                                  \
   8       __builtin_unreachable ();                 \
   9     x /= DIV;                                   \
  10     x += ADD;                                   \
  11     return x * MUL;                             \
  12   }
  13
  14 TEST_CMP (f1, 2, 1, 3)
  15 TEST_CMP (f2, 4, 2, 2)
  16 TEST_CMP (f3, 4, 3, 6)
  17 TEST_CMP (f4, 8, 4, 2)
  18 TEST_CMP (f5, 8, 5, 4)
  19
  20 /* { dg-final { scan-tree-dump-times {<[a-z]*_div_expr,} 5 "optimized" } } */