github.com/moarvm/moarvm | IRC logs at colabti.org/irclogger/irclogger_logs/moarvm Set by AlexDaniel on 12 June 2018. |
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nine | brrt: I'd be grateful for any such hints! My understanding of the JITs control flow is limited | 07:15 | |
tellable6 | nine, I'll pass your message to brrt | ||
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Guest38485 | is everyone working on adventofcode.com/2019 ? | 12:54 | |
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nwc10 | Guest38485: domm mentions it every so often on #austria.pm over on irc.perl.org | 14:59 | |
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nine | Guest38485: I don't need advent calendar puzzles. MoarVM supplies me with a steady flow of the greatest puzzles and mysteries that want solving :) | 15:12 | |
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dogbert17 | nine: have you solved the JIT puzzle yet? | 17:10 | |
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nine | dogbert17: no, still on it | 17:14 | |
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dogbert17 | nine: any wise comments from jnthn or brrt? | 18:27 | |
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nine | not yet | 18:58 | |
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nine | No progress today :/ | 20:48 | |
I do have some suspicion...that tc->cur_frame ends up pointing to the wrong frame as it never had a spesh_cand but we're in JITed code anyway | 20:51 | ||
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nine | That tc->cur_frame gets set by NativeCall's callback handler: tc->cur_frame = backup_cur_frame; | 20:56 | |
I.e. that's the frame that called the native code that ran the callback | 20:57 | ||
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jnthn | nine: Hmm...I wonder if it could be something like a deopt all causes an uninlining, creating a new top frame, and then it restores backup_cur_frame to the wrong thing. That doesn't quite match the symptoms though... | 23:44 | |
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