IRHydra: Display V8 and Dart VM Intermediate Representations

github.com

23 points·jcr··5 comments

It's too bad his README.md doesn't have some screenshots. Luckily, his site for IRHydra2 has a screencast you can scrub through (http://mrale.ph/irhydra/2/) to get at least a sense of what it looks like. This tooltip here was pretty fantastic (https://www.youtube.com/watch?t=725&v=pycQWDuCBN8), seems like a great project!

I should probably update the screencast because I have changed UI since recording it.

Mostly changing colors, but also adding few important features, like "interesting mode" which I sometimes demo in the talks[1].

"Interesting mode" hides uninteresting/confusing IR instructions and splices sources into the IR helping people to navigate it and find IR chunks that interest them.

[1] http://mrale.ph/talks/goto2015/#/97

Too bad he's been barely working on it. I must say, it also looks very impressive... but will it ever get pass the demo stage?

I'd love to work more on it, but sadly it's really outside of my real work right now - as I haven't been working on V8 for several years now.

It is past the demo stage though - I know people who use it and it is the only tool I use myself to look at V8 deopts (on a rare occasion when I need to).

I do answer questions and fix bugs whenever possible - so if you would like to use IRHydra and can't figure something out - just send me a mail or file a bug on GitHub.

I originally had hopes that something like this will eventually be incorporated in DevTools - but this hope has withered by now.

Uh, it's already usable and very useful, just not exactly user friendly. It's way past the demo stage

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