On Sunday, 3 March 2013 at 11:57:36 UTC, bearophile wrote:
Walter Bright:
and I have trouble thinking of any significant improvements to
code gen that could be made with runtime data.
I've seen that the JavaHotSpot is able to unroll loops with a
length known only at run-time. It unrolls them only when the
run-time statistics say it's advantageous.
(In theory the same is possible with profile-driven
optimization).
Bye,
bearophile
I believe the Hotspot runtime compiler is about the only one to
perform runtime optimizations like that. I don't know if the CIL
does this kind of things.
