On Wed, Sep 25, 2019 at 2:03 PM Christopher Williams
wrote:
> Thank you Dave. I have an understanding of constexpr evaluation, and
> realise the compiler is free to do what it likes in all but test4... I
> suppose I'd really like to know if there is an actual limit/threshold in
> place. If test3
Thank you Dave. I have an understanding of constexpr evaluation, and
realise the compiler is free to do what it likes in all but test4... I
suppose I'd really like to know if there is an actual limit/threshold in
place. If test3 is changed to use 100 characters it does as I expect,
any more than th
constexpr is a red herring here - except in 4, where you've used the
constexpr keyword to create a constexpr context, in 1-3 these are just
normal function calls the compiler optimizes as it sees fit - and it seems
it saw fit to unroll and optimize to a constant cases 1 and 2, but not case
3 (perha
Given the code below, clang produces a constant value for test1, test2
and test4. Why doesn't it for test3?
This is more of a curious query, than a request for help, but if someone
does have the answer, I'd appreciate as much detail as possible.
||
|staticconstexprintcount_x(constchar*str){int
