https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93666
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The source:
struct A
{
int i{1}, j{2};
A(int i_, int j_) : i(i_), j(j_) {}
};
A a{3,4};
struct B
{
int i{1}, j{2};
constexpr B(int i_, int j_) : i(i_), j(j_) {}
};
B b{3,4};
---- CUT ----
There is a big difference between B and A. OPtimization has nothing to do with
it. C++ says a has a dynamic constructor while b is required to be done
statically. So GCC does not currently implement dynamic to static constructor
optimization while clang does.
There is another bug report which talks about the same.
