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* YJIT: Add `--yjit-compilation-log` flag to print out the compilation log at exit. * YJIT: Add an option to enable the compilation log at runtime. * YJIT: Fix a typo in the `IseqPayload` docs. * YJIT: Add stubs for getting the YJIT compilation log in memory. * YJIT: Add a compilation log based on a circular buffer to cap the log size. * YJIT: Allow specifying either a file or directory name for the YJIT compilation log. The compilation log will be populated as compilation events occur. If a directory is supplied, then a filename based on the PID will be used as the write target. If a file name is supplied instead, the log will be written to that file. * YJIT: Add JIT compilation of C function substitutions to the compilation log. * YJIT: Add compilation events to the circular buffer even if output is sent to a file. Previously, the two modes were treated as being exclusive of one another. However, it could be beneficial to log all events to a file while also allowing for direct access of the last N events via `RubyVM::YJIT.compilation_log`. * YJIT: Make timestamps the first element in the YJIT compilation log tuple. * YJIT: Stream log to stderr if `--yjit-compilation-log` is supplied without an argument. * YJIT: Eagerly compute compilation log messages to avoid hanging on to references that may GC. * YJIT: Log all compiled blocks, not just the method entry points. * YJIT: Remove all compilation events other than block compilation to slim down the log. * YJIT: Replace circular buffer iterator with a consuming loop. * YJIT: Support `--yjit-compilation-log=quiet` as a way to activate the in-memory log without printing it. Co-authored-by: Randy Stauner <randy.stauner@shopify.com> * YJIT: Promote the compilation log to being the one YJIT log. Co-authored-by: Randy Stauner <randy.stauner@shopify.com> * Update doc/yjit/yjit.md * Update doc/yjit/yjit.md --------- Co-authored-by: Randy Stauner <randy.stauner@shopify.com> Co-authored-by: Maxime Chevalier-Boisvert <maximechevalierb@gmail.com>