gcc/testsuite/gcc.dg/divmod-4.c

   1 /* { dg-require-effective-target divmod } */
   2 /* { dg-options "-O2 -fdump-tree-widening_mul-details" } */
   3 /* mod comes before div in same bb.  */
   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 r = x % y;                    \
  18   bigtype q = x / y;                    \
  19   return q + r;                         \
  20 }
  21
  22 FOO(SImode, DImode, 3)
  23 FOO(SImode, UDImode, 4)
  24 FOO(USImode, DImode, 6)
  25 FOO(USImode, UDImode, 7)
  26 FOO(DImode, DImode, 8)
  27 FOO(DImode, UDImode, 9)
  28 FOO(UDImode, UDImode, 10)
  29
  30 /* { dg-final { scan-tree-dump-times "DIVMOD" 7 "widening_mul" } } */