On Thursday, 23 February 2017 at 17:02:55 UTC, Johan Engelen
wrote:
On Thursday, 23 February 2017 at 16:25:34 UTC, Johan Engelen
wrote:
[...]
We're in good company: both clang and gcc also do not
devirtualize the call when the loopcount is too large (when the
loop count is 4, the indirect calls are gone, when it is 160,
they are back).
Btw, with PGO, the performance is 4 ms(direct call) vs 6 ms
(virtual call). Pathological, but still.
I am submitting a DConf talk on optimization and the cost of D
idioms. This gave me some new ideas to present, thanks :)
-Johan
Marking the method as @pure changes anything?
