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

   1 /* { dg-require-effective-target divmod_simode } */
   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 extern int cond;
   9 void foo(void);
  10
  11 #define FOO(smalltype, bigtype, no)  \
  12 bigtype f_##no(smalltype x, bigtype y) \
  13 {                                        \
  14   bigtype q = x / y;                     \
  15   if (cond)                              \
  16     foo ();                              \
  17   bigtype r = x % y;                     \
  18   return q + r;                          \
  19 }
  20
  21 FOO(SImode, SImode, 1)
  22 FOO(SImode, USImode, 2)
  23 FOO(USImode, USImode, 3)
  24
  25 /* { dg-final { scan-tree-dump-times "DIVMOD" 3 "widening_mul" } } */