P1235 Implicit constexpr

[wg21bot]

P1235R0 Implicit constexpr (Bryce Adelstein Lelbach, Hana Dusíková)

[jensmaurer]

Marked as "backlog" on San Diego EWG-I wiki.

[jfbastien]

EWG-I in Kona:
If a variable is declared as constexpr and calls a non- constexpr function, the compiler should try to do constexpr evaluation.

SF	F	N	A	SA
0	1	2	6	3

We want to explore making constexpr implicit as this paper suggests.

SF	F	N	A	SA
0	1	2	6	3