[Bug c++/82405] Function not inlined for switch and suboptimal assembly is generated

["antoshkka at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82405

--- Comment #8 from Antony Polukhin <antoshkka at gmail dot com> ---
Yes, in the isolated test case constants are first:

static inline double eval_square2(double r) { return 4 * r * r; }
static inline double eval_circle2(double r) { return 3.1415 * r * r; }

double test_switch_native_slow(int shape, double r) {
    if (shape == 123)
      return eval_circle2(r);
    else
      return eval_square2(r);
}

So multiplying r at the beginning is not good.