Graal is a new just-in-time compiler for the Java Virtual Machine focused on peak performance and multi-language support. Graal offers performance advantages not only to Java code, but also to scripting languages such as JavaScript, Ruby, Python, and R. Additionally, it enables the execution of native code on the JVM via an LLVM-based front end.
Languages are executed by Graal via the Truffle framework, which comes with seamless interoperability and polyglot debugging and profiling functionality.