gcc/testsuite/gcc.dg/divmod-6.c

   1 /* { dg-require-effective-target divmod } */
   2 /* { dg-options "-O2 -fdump-tree-widening_mul-details" } */
   3
   4 typedef int SImode __attribute__((mode(SI)));
   5 typedef unsigned USImode __attribute__((mode(SI)));
   6
   7 typedef int DImode __attribute__((mode(DI)));
   8 typedef unsigned UDImode __attribute__((mode(DI)));
   9
  10 extern int cond;
  11 void foo(void);
  12
  13 #define FOO(smalltype, bigtype, no)      \
  14 bigtype f_##no(smalltype x, bigtype y)   \
  15 {                                        \
  16   bigtype q = x / y;                     \
  17   bigtype r1 = 0, r2 = 0;                \
  18   if (cond)                              \
  19     r1 = x % y;                          \
  20   else                                   \
  21     r2 = x % y;                          \
  22   return q + r1 + r2;                    \
  23 }
  24
  25 FOO(SImode, DImode, 3)
  26 FOO(SImode, UDImode, 4)
  27 FOO(USImode, DImode, 6)
  28 FOO(USImode, UDImode, 7)
  29 FOO(DImode, DImode, 8)
  30 FOO(DImode, UDImode, 9)
  31 FOO(UDImode, UDImode, 10)
  32
  33 /* { dg-final { scan-tree-dump-times "DIVMOD" 7 "widening_mul" } } */