Jonathan writes: In November I continued my work towards partial escape analysis and related optimiztions in MoarVM. In terms of the analysis itself, I spent some time designing and starting to implement deoptimization handling. If we use the analysis to decide to eliminate an allocation, then this decision will have been made based on specialized code containing guards. In the event these guards fail, we must be able to undo

This is a monthly report by Dave Mitchell on his grant under Perl 5 Core Maintenance Fund. We thank the TPF sponsors to make this grant possible. Another somewhat sparse month. Fixed a couple of bugs and worked my though some of the backlog in my p5p mailbox. SUMMARY: 2:05 RT #133538 refaliasing does not work 1:00 RT #133687 codeblocks mis-parsed in runtime pattern 6:07 process p5p

This is a monthly report by Tony Cook on his grant under Perl 5 Core Maintenance Fund. We thank the TPF sponsors to make this grant possible. Approximately 34 tickets were reviewed, and 6 patches were applied. 7.90 #123638 review existing patch, work on fixes, testing #123638 review test results, debugging, research #123638 more research, work on a fix, debugging, testing #123638 debugging, partial fix

This is a monthly report by Tony Cook on his grant under Perl 5 Core Maintenance Fund. We thank the TPF sponsors to make this grant possible. Approximately 49 tickets were reviewed, and 6 patches were applied 2.18 #125760 re-test branch and apply to blead #125760 perldelta 11.90 #126706 get tests working, work on installer with install_name_tool #126706 re-work to use @rpath #126706 polish,

This is a monthly report by Dave Mitchell on his grant under Perl 5 Core Maintenance Fund. We thank the TPF sponsors to make this grant possible. I've been almost entirely absent from perl stuff for the last couple of months due to doing other things and lack of enthusiasm. Hopefully things will start picking up. Did a little bit of work on a couple of tickets SUMMARY: 0:40

Jonathan writes: My performance work in October focused for the most part on escape analysis and scalar replacement. This work remains in a branch, however it has now reached the milestone of performing its first couple of real-world optimizations, eliminating short-lived boxes and wrapper objects across inline boundaries. I also started with some long-planned work on more aggressive optimization of lexical variables, such that they are stored as "locals" where

Jonathan writes: My main deliverable in September was a significant improvement to the performance of object construction and initialization. I wrote a blog post describing the ways in which this was achieved. I also improved the performance of array assignment, took on a tricky bug that stood in the way of merging a GC performance improvement, and took another small step with the work on escape analysis. 5:33 Lots of

This is a monthly report by Tony Cook on his grant under Perl 5 Core Maintenance Fund. We thank the TPF sponsors to make this grant possible. Approximately 34 tickets were reviewed, and 4 patches were applied 2.47 fatalize sysread/recv/syswrite/send on utf8 handles: fix warnings, croak tests, documentation updates, post patch to #125760 0.20 #126084 try to apply, issue already fixed, close ticket 1.58 #126706

My grant work in August focused on improving the performance of a number of very commonly used constructs in Perl 6 programs, of note array and hash access, box/unbox operations and various common operations on Int My work also uncovered a problem that could be best addressed with a small language design tweak, and I wrote up a proposal on that I also made various improvements to the optimization infrastructure.

Work in the latter part of July, falling under the current round of the grant, focused mostly on hunting down and fixing bugs. A memory leak bug involving the thread pool scheduler was fixed; it was only problematic in some programs so far, but would have become far more noticeable with the new 6.d await semantics. Others fixes addressed regressions arising from recent optimization work, although in most cases the