Perl 6 - the future is here, just unevenly distributed

IRC log for #moarvm, 2016-10-01

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Time Nick Message
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01:48 Topic for #moarvm is now https://github.com/moarvm/moarvm | IRC logs at  http://irclog.perlgeek.de/moarvm/today
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07:56 psch geez moar is confusing :P
07:56 psch also i'm clearly not awake enough yet to hack on it either
07:57 psch 'cause now i've pushed (to my fork behind the PR, but still) a change that fails with (something like) "invalid identifier" or so
08:09 psch alright, i think i've got it now :l
08:10 psch i've pushed the adjusted error message on nqp-j already, so i'd say after the merge we bump moar & nqp rev and then i push the adjusted test
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09:38 * jnthn wonders what's confusing about moar... :)
09:40 dalek MoarVM: cbb1178 | peschwa++ | src/6model/reprs/CStruct.c:
09:40 dalek MoarVM: Die on CStruct without any fields.
09:40 dalek MoarVM: review: https://github.com/MoarVM/MoarVM/commit/cbb11781a3
09:40 dalek MoarVM: 98975c8 | peschwa++ | src/6model/reprs/CStruct.c:
09:40 dalek MoarVM: Adjust error message for zero size CStruct, jnthn++.
09:40 dalek MoarVM: review: https://github.com/MoarVM/MoarVM/commit/98975c81af
09:40 dalek MoarVM: 174fc71 | peschwa++ | src/6model/reprs/CStruct.c:
09:40 dalek MoarVM: Pass the STable into compute_allocation_strategy.
09:40 dalek MoarVM:
09:40 dalek MoarVM: Otherwise, well, it's not there and we cannot ask it for the debug_name.
09:40 dalek MoarVM: review: https://github.com/MoarVM/MoarVM/commit/174fc71230
09:40 dalek MoarVM: 6b8fa2e | jnthn++ | src/6model/reprs/CStruct.c:
09:40 dalek MoarVM: Merge pull request #416 from peschwa/master
09:40 dalek MoarVM:
09:42 dalek MoarVM: 0672713 | cygx++ | src/io/syncfile.c:
09:42 dalek MoarVM: make MVM_file_open_fh() throw if the file we opened was a directory
09:42 dalek MoarVM: review: https://github.com/MoarVM/MoarVM/commit/0672713e6a
09:42 dalek MoarVM: 727114d | cygx++ | src/io/syncfile.c:
09:42 dalek MoarVM: Document why it's ok to ignore fstat errors in MVM_file_open_fh()
09:42 dalek MoarVM: review: https://github.com/MoarVM/MoarVM/commit/727114d13c
09:42 dalek MoarVM: fb40d63 | cygx++ | src/io/syncfile.c:
09:42 dalek MoarVM: Fix bug and memory leaks in MVM_file_open_fh()
09:42 dalek MoarVM: review: https://github.com/MoarVM/MoarVM/commit/fb40d6378f
09:42 dalek MoarVM: 0dce897 | jnthn++ | src/io/syncfile.c:
09:42 dalek MoarVM: Merge pull request #406 from cygx/fail-open-if-dir
09:42 dalek MoarVM:
09:44 dalek MoarVM: 8726735 | labster++ | build/probe.pm:
09:44 dalek MoarVM: Add error message for likely macOS build failure (that I personally experienced)
09:44 dalek MoarVM: review: https://github.com/MoarVM/MoarVM/commit/872673596c
09:44 dalek MoarVM: 34c375a | jnthn++ | build/probe.pm:
09:44 dalek MoarVM: Merge pull request #408 from labster/master
09:44 dalek MoarVM:
09:44 dalek MoarVM: Add error message for likely macOS build failure
09:44 dalek MoarVM: review: https://github.com/MoarVM/MoarVM/commit/34c375a563
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10:05 travis-ci MoarVM build failed. Jonathan Worthington 'Merge pull request #416 from peschwa/master
10:05 travis-ci https://travis-ci.org/MoarVM/MoarVM/builds/164237184 https://github.com/MoarVM/MoarVM/compare/9b39aa56abcd...6b8fa2ed3a27
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10:06 psch --no-jit and no --has-libffi (which i assume is also --no--libffi..?)
10:09 psch okay i don't think i understand what travis tests there..?
10:10 psch 'cause, well, it creates install-jvm-runner.pl and then dies because of an too old moar version..?
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10:10 psch ohh, it builds nqp
10:10 psch right, moar doesn't have tests
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10:21 travis-ci MoarVM build failed. Jonathan Worthington 'Merge pull request #406 from cygx/fail-open-if-dir
10:21 travis-ci https://travis-ci.org/MoarVM/MoarVM/builds/164237500 https://github.com/MoarVM/MoarVM/compare/6b8fa2ed3a27...0dce8974453b
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13:58 dalek MoarVM: 8e92125 | (Dominique Dumont)++ | Configure.pl:
13:58 dalek MoarVM: Fix build without libtommath source
13:58 dalek MoarVM:
13:58 dalek MoarVM: Debian policy requires (as far as possible) to remove convenience
13:58 dalek MoarVM: copy of source code before build.
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17:45 brrt good * #moarvm
17:45 brrt \o btyler
17:46 btyler hiya brrt \o
17:47 * brrt is finally progressing on the JIT by deciding not to care about some design things
17:49 brrt hmm, just had an idea… let me put it here before it slips my mind
17:50 brrt optimistic store removal can be a completely local thing
17:50 brrt (in which case, it doesn't help much, but okay)
17:50 brrt in which case, the only 'natural storage position' for a value would be the last
17:51 brrt e.g.: suppose we have a sequence of LOAD, COPY, (equalling SET), another COPY, and then a STORE
17:52 brrt if the definition of the first COPY would be the last one, the STORE would be inserted anyway; but it'd be equally safe just to store it in the final place
17:52 brrt (in which case… *drumroll* we can detect-and-eliminate that double store
17:53 brrt not sure if this is anything but hypothetical, but still a nice simplication
17:53 brrt trainswitch &
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18:10 brrt anyway… any plans for LPW?
18:14 brrt (just yesterday i finally installed Fedora 24. And I finally got rid of selinux. I wonder which one contributes most to the thing feeling much faster
18:29 dalek MoarVM/even-moar-jit: c3fd80c | brrt++ | src/jit/linear_scan.c:
18:29 dalek MoarVM/even-moar-jit: Implement naive spilling and splitting
18:29 dalek MoarVM/even-moar-jit:
18:29 dalek MoarVM/even-moar-jit: The actual logic of the 'spill' decision needs some work because
18:29 dalek MoarVM/even-moar-jit: it needs to decide whether or not to split a range in the first
18:29 dalek MoarVM/even-moar-jit: place. Also, splits should probably be rangeable (which means
18:29 dalek MoarVM/even-moar-jit: that the split logic may be more complicated).
18:29 dalek MoarVM/even-moar-jit:
18:29 dalek MoarVM/even-moar-jit: And it needs the mysterious function 'create_new_live_range'
18:29 dalek MoarVM/even-moar-jit: and 'get_storage_location', which probably aren't really very
18:29 dalek MoarVM/even-moar-jit: complicated but I don't want to think about them right now :-)
18:29 dalek MoarVM/even-moar-jit: review: https://github.com/MoarVM/MoarVM/commit/c3fd80ce7b
18:47 brrt i wonder how hard it'd be to have a minor program that links moar, builds an expr tree (from a file?), compiles and runs it
18:47 brrt possibly the parsing bit is hardest, but, sexpr
18:48 timotimo why not write it in nqp?
18:48 brrt because NQP is itself jitted
18:49 timotimo ah, you don't want that
18:49 brrt or, you mean, the parser
18:49 brrt i want some more fine-grained control for it, anyway
18:49 timotimo well, moar will only really run stuff it has bytecode for ...
18:49 brrt nqp::jitdisable(), nqp::jitenable(), slt
18:49 timotimo sounds sensible
18:49 timotimo and easy to do, i guess?
18:49 brrt not sure
18:49 timotimo though i'm not sure if we rely on that flag not changing :D
18:50 brrt yeah, i wonder how that interoperates with speshing
18:50 brrt which is kind of asynchronous from the viewpoint of the user
18:50 timotimo right
18:51 * timotimo BBL
18:51 brrt (furthermore, it has clear action-at-a-distance for mutlithreaded applications, unless we bind the flag to threadcontext)
18:51 brrt see you :-)
18:52 timotimo right, the flag is in the instance right now
18:53 brrt which… is really easy to change, but also, probably not worth it
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21:11 timotimo i think we could also trigger a major collection when the number of gen2 roots has increased a noticable amount
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