gcc/testsuite/gcc.dg/divmod-1.c

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