Talk:Adaptive optimization

This article is rated Start-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects:

Computing: CompSci Low‑importance This article is within the scope of WikiProject Computing, a collaborative effort to improve the coverage of computers, computing, and information technology on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.ComputingWikipedia:WikiProject ComputingTemplate:WikiProject ComputingComputing Low This article has been rated as Low-importance on the project's importance scale. This article is supported by WikiProject Computer science (assessed as Mid-importance). Things you can help WikiProject Computer science with: edit history watch purge Here are some tasks awaiting attention: Article requests : Requested articles/Applied arts and sciences/Computer science, computing, and Internet Cleanup : Computer science articles needing attention Computer science articles needing expert attention Copyedit : Computing Expand : Computer science Infobox : Computer science articles without infoboxes Maintain : Timeline of computing 2020–present Photo : Find pictures for the biographies of computer scientists (see List of computer scientists) Computing articles needing images Stubs : Computer science stubs Unreferenced : WikiProject Computer science/Unreferenced BLPs Project-related : Tag all relevant articles in Category:Computer science and sub-categories with {{WikiProject Computer science}}

Not original author, but I am pretty sure he doesn't mean reverse execution in theory. I agree with "which states that deoptimization is related to switch from optimized native code back to unoptimized interpreted code."

> Anyway, I'd be very interested in an implementation for the HotSpot JVM!

This is not an implementation of the HotSpot, while I do think that hot spot does have this (after all they do OSR) Here is a reference that explicitly uses the wording "reverse transition" to refer to "from compiled to interpreter".

https://dl.acm.org/citation.cfm?id=191116 — Preceding unsigned comment added by Erickomoto (talk • contribs) 21:51, 18 July 2018 (UTC)Reply

The sentence "In some systems, notably the Java Virtual Machine, execution over a range of bytecode instructions can be provably reversed." sound as if especially the JVM supports reverse execution. Does it really? Or did the author mean: interpreted languages generally support reverse execution in theory?

I searched for information about reverse execution in HotSpot JVM but all I found was a glossary (glossary) which states that deoptimization is related to switch from optimized native code back to unoptimized interpreted code. There is just a research article on a prototypical implementation for Kaffe which supports reverse execution.

Anyway, I'd be very interested in an implementation for the HotSpot JVM!

BTW: According to google search results 'unwind' usually refers to exception handling and unwinding the call stack to find matching exception handlers or unwinding loops which seems to be an optimization technique.

it would be better to cite other implementations of this, pypy for example