Compiler and JVM Research at JKU

Since 2001 the Institute for System Software at the Johannes Kepler University (JKU) in Linz, Austria, is collaborating with Oracle Labs (previously Sun Microsystems) on dynamic compiler optimizations and JVM-related research topics. Some of the PhD theses developed at our institute found their way into the current product version of the Java HotSpot™ VM and the JDK.

Currently, we are closely cooperating with the Oracle Labs branch at JKU. The current main research artefacts are the Graal Compiler and the Truffle Language Implementation Framework. This page describes our present and previous research:

Current research

• Graal Compiler
• Truffle Language Implementation Framework

Previous research

• Dynamic Code Evolution for Java
• Garbage Collection Optimizations
• Generalized Trace Compilation (funded by the Austrian Science Foundation)
• Java Coroutines
• Java Continuations
• SSA Form and Register Allocation for the HotSpot Client Compiler
• Escape Analysis for the Client Compiler
• Automatic Object Inlining
• Array Bounds Check Elimination for the Client Compiler
• Optimization of Strings
• Tail Calls for Java
• Client Compiler Visualizer
• Ideal Graph Visualizer
• Other JVM Projects

Most of this work was funded by Oracle. We gratefully acknowledge the support of the Virtual Machine Research Group at Oracle Labs as well as the help of the Java HotSpot™ Team.

There is an overview article about our work published in the International Innovation Magazine in July 2013. International Innovation is the leading global dissemination resource for the wider scientific, technology and research communities, dedicated to disseminating the latest science, research and technological innovations on a global level. More information and a complimentary subscription offer to the publication can be found at: www.research-europe.com.

Team

The team at the JVM workshop at ETH in September 2014