gcc/testsuite/gcc.dg/tree-ssa/sqrt_div.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -ffast-math -fdump-tree-forwprop-details" } */
   3 /* { dg-require-effective-target c99_runtime } */
   4
   5 #define T(n, type, fname)          \
   6 type f##n (type x)                 \
   7 {                                  \
   8   type t1 = __builtin_##fname (x); \
   9   type t2 = x / t1;                \
  10   return t2;                       \
  11 }
  12
  13 T(1, double, sqrt)
  14
  15 /* { dg-final { scan-tree-dump "gimple_simplified to t2_\[0-9\]+ = __builtin_sqrt .x_\[0-9\]*.D.." "forwprop1" } }     */
  16
  17 T(2, float, sqrtf )
  18
  19 /* { dg-final { scan-tree-dump "gimple_simplified to t2_\[0-9\]+ = __builtin_sqrtf .x_\[0-9\]*.D.." "forwprop1" } }     */
  20
  21 T(3, long double, sqrtl)
  22
  23 /* { dg-final { scan-tree-dump "gimple_simplified to t2_\[0-9\]+ = __builtin_sqrtl .x_\[0-9\]*.D.." "forwprop1" } } */