Ruby 2.6 Adds JIT Compiler
Written by Kay Ewbank   
Friday, 28 December 2018

Ruby 2.6 has been released with an experimental JIT compiler, and an abstract syntax tree module.

Ruby has gained popularity because in addition to being fun to use, it is useful because of its mix of different programming styles - functional, dynamic and object-oriented.


The JIT is the major improvement to the new version, and though still at the experimental stage, will improve the performance of code, particularly for workloads that make heavy use of the CPU. The developers say their benchmarks have shown improvements of 1.7 times faster than Ruby 2.5 for programs like this (the actual test was a benchmark called Optcarrot. The developers point out that the compiler is still experimental and many other memory-intensive workloads like Rails might not benefit from it at the moment.

The JIT compiler is also newsworthy because it works differently from JIT compilers in other languages. Ruby’s JIT compiler prints C code to a disk and spawns a common C compiler process to generate native code.

The JIT compiler is supported when Ruby is built by GCC, Clang, or Microsoft VC++, which needs to be available at runtime. Future versions will include method inlining, which is expected to increase Ruby’s performance in order of magnitude.

Away from the JIT compiler, the preview includes a new module, RubyVM::AST. This module has a parse method that parses a given ruby code that's a string, and returns a set of AST (Abstract Syntax Tree) nodes. The module also has a parse_file method that parses a given Ruby code file and returns AST nodes. Another class that has been introduced is RubyVM::AbstractSyntaxTree::Node. This lets you get source location and children nodes from Node objects. This feature is experimental.

Other new features include the addition of an endless range that you can use without specifying how large the range is; and an Add Binding#source_location method that returns the source location. 


More Information

Ruby Official Site

Related Articles 

Ruby 2.5 Adds Support For Branch Coverage

Commercial Ruby Distro Enters Beta

Ruby On Rails Reaches 5.0

Ruby 2.3 Released

ActiveState Extends to Ruby, Node.js, Go and Lua



To be informed about new articles on I Programmer, sign up for our weekly newsletter, subscribe to the RSS feed and follow us on, Twitter, Facebook or Linkedin.


Coursera Offers Free Access To Students

Coursera has extended an offer it made earlier this year in response to the Covid-19 lockdown when universities in many parts of the world shut their campuses sent students home - free access to any o [ ... ]

GitHub Command Line Tool Reaches General Availability

GitHub has announced the general availability of its new command-line tool, GitHub CLI. The tool lets you issue pull requests and work with issues from the command line to give developers a more seaml [ ... ]

More News





or email your comment to: