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

   1 /* { dg-require-effective-target divmod_simode } */
   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 extern int cond;
   8 void foo(void);
   9
  10 #define FOO(smalltype, bigtype, no)  \
  11 bigtype f_##no(smalltype x, bigtype y) \
  12 {                                        \
  13   bigtype q = x / y;                     \
  14   bigtype r1 = 0, r2 = 0;                \
  15   if (cond)                              \
  16     r1 = x % y;                          \
  17   else                                   \
  18     r2 = x % y;                          \
  19   return q + r1 + r2;                    \
  20 }
  21
  22 FOO(SImode, SImode, 1)
  23 FOO(SImode, USImode, 2)
  24 FOO(USImode, USImode, 3)
  25
  26 /* { dg-final { scan-tree-dump-times "DIVMOD" 3 "widening_mul" } } */