Election for Leonardo Banderali as Committer on Eclipse OMR

Leonardo Banderali is an active contributor to the Eclipse OMR project in many ways. He was actively involved in IBM's original open-source contribution of the Eclipse OMR compiler component. Through his refactoring efforts he became familiar with a broad range of components within the compiler technology as well as extensible class design.

Leonardo has been instrumental in shaping the design and evolution of JitBuilder. He has successfully demonstrated the utility of the Eclipse OMR compiler technology by integrating it into two open-source language runtimes using JitBuilder:

1) A just-in-time compiler called Lua Vermelha (https://github.com/Leonardo2718/lua-vermelha) for the PUC-Rio Lua VM that realized speedups of 2x-4x on some Lua microbenchmarks.
2) As part of an academic team, developed a just-in-time compiler (https://github.com/wasmjit-omr) for the WABT WebAssembly interpreter that achieved improvements on WebAssembly microbenchmarks and a 14x speedup on a ray tracer workload.

Both prototypes made a number of advancements to the JitBuilder services, type system, and overall architecture. His recent contributions to JitBuilder include the framework for implementing language bindings for JitBuilder and the separation of the client and JitBuilder APIs (under pull requests 2915 and 2968).

Leonardo also led the design and development of a new technique to test the Eclipse OMR compiler technology in a more targeted and language agnostic way. He developed a grammar to express the compiler intermediate language (called Tril), a parser to consume a textual representation of the grammar and convert it into the internal intermediate representation consumed by the compiler technology, a framework based on Google Test for writing test cases, and a means for the OMR compiler to produce Tril directly from the compiler to facilitate test case development. He then developed numerous compiler unit tests based on Tril and prepared an instructional video and documentation describing how to use it (it is the most popular video on the Eclipse OMR YouTube channel). He is the foremost expert in this strategic area of code.

Leonardo has contributed nearly 50 pull requests (and nearly 200 commits) to the project, and has repeatedly demonstrated thoroughness in his implementation and quality of those commits. He has also participated in the review of over 80 pull requests from other contributors and provided input on nearly 60 issues. When his expertise is explicitly sought by other committers or developers for a code review, his reviews are timely and thorough. His comments are always professional and reflect respect for contributors and the Eclipse OMR project. Leonardo also monitors and provides timely responses to questions asked on the Eclipse OMR Slack workspace, particularly in areas dealing with Tril, JitBuilder, and C++. He is a regular participant in the Compiler Architecture Meetings and offers thoughtful opinions and insight in the discussions.

An important aspect of all of Leonardo's contributions are their steadfast alignment with the goals of the Eclipse OMR project, the betterment of the technology, and broadening the use of Eclipse OMR in other projects. He is a strong advocate of test driven development and all forms of documentation. He has contributed numerous test cases, guided other contributors in developing their own Tril tests, and wrote extensive documentation on Tril, the JitBuilder client API, and on subjects such as compiler aliasing. He actively advocates Eclipse OMR in presentations and at conferences such as SPLASH and CASCON.

I believe Leonardo will be an excellent committer on the Eclipse OMR project.