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Diffstat (limited to 'NEWS.md')
| -rw-r--r-- | NEWS.md | 17 |
1 files changed, 13 insertions, 4 deletions
@@ -370,17 +370,25 @@ The following deprecated APIs are removed. ### YJIT -* Support arm64 / aarch64 on UNIX platforms. +* YJIT now supports both x86-64 and arm64/aarch64 CPUs on Linux, MacOS, BSD and other UNIX platforms. + * This release brings support for Mac M1/M2, AWS Graviton and Raspberry Pi 4 ARM64 processors. * Building YJIT requires Rust 1.58.0+. [[Feature #18481]] + * In order to ensure that CRuby is built with YJIT, please install rustc >= 1.58.0 and + run `./configure` with `--enable-yjit`. + * Please reach out to the YJIT team should you run into any issues. * Physical memory for JIT code is lazily allocated. Unlike Ruby 3.1, the RSS of a Ruby process is minimized because virtual memory pages allocated by `--yjit-exec-mem-size` will not be mapped to physical memory pages until actually utilized by JIT code. * Introduce Code GC that frees all code pages when the memory consumption by JIT code reaches `--yjit-exec-mem-size`. -* `RubyVM::YJIT.runtime_stats` returns Code GC metrics in addition to - existing `inline_code_size` and `outlined_code_size` keys: - `code_gc_count`, `live_page_count`, `freed_page_count`, and `freed_code_size`. + * `RubyVM::YJIT.runtime_stats` returns Code GC metrics in addition to + existing `inline_code_size` and `outlined_code_size` keys: + `code_gc_count`, `live_page_count`, `freed_page_count`, and `freed_code_size`. +* Most of the statistics produced by `RubyVM::YJIT.runtime_stats` are now available in release builds. + * Simply run ruby with `--yjit-stats` to compute stats (incurs some run-time overhead). +* YJIT is now optimized to take advantage of object shapes. [[Feature #18776]] +* Take advantage of finer-grained constant invalidation to invalidate less code when defining new constants. [[Feature #18589]] ### MJIT @@ -438,6 +446,7 @@ The following deprecated APIs are removed. [Feature #18630]: https://bugs.ruby-lang.org/issues/18630 [Bug #18633]: https://bugs.ruby-lang.org/issues/18633 [Feature #18685]: https://bugs.ruby-lang.org/issues/18685 +[Feature #18776]: https://bugs.ruby-lang.org/issues/18776 [Bug #18782]: https://bugs.ruby-lang.org/issues/18782 [Feature #18788]: https://bugs.ruby-lang.org/issues/18788 [Feature #18809]: https://bugs.ruby-lang.org/issues/18809 |