==== Dynamic Compilation for VLIW Processors ====

This project aims at exploring the possibilities of applying JIT translation of Java Bytecode (and related virtual machine instructions) on systems based on VLIW processors, exploiting the instruction-level parallelism as much as possible.

In particular, we implemented JIST, a scheduling JIT compiler, based on the open source Java Virtual Machine implementation Kaffe, and targeted to the Lx platform, a family of Very Long Instruction Word processors jointly developed by Hewlett Packard and STMicroelectronics.
Within this framework, three main issues are considered: register allocation, instruction scheduling (both local and global), and memory disambiguation. 

We are also investigating the impact of selective compilation and optimization on the performances of our virtual machine.

=== Links ===

[[http://home.dei.polimi.it/agosta/old/dyncomp|Project home page]]

=== Bibliography ===
  - G. Agosta, S. Crespi Reghizzi, D. Domizioli and M. Sykora. Global Instruction Scheduling in Dynamic Compilation for Embedded Systems. In proceedins of the //4th Workshop on Java Technologies for Real-time and Embedded Systems (JTRES 2006)//, Paris, Oct 2006.  
  - Giovanni Agosta, Stefano Crespi Reghizzi, Paolo Palumbo, Martino Sykora. "Selective Compilation via Fast Code Analysis and Bytecode Tracing". In //21st ACM Symposium on Applied Computing//, April 2006, Dijon, France
  - Giovanni Agosta, Stefano Crespi Reghizzi, Gerlando Falauto, Martino Sykora. "Just-In-Time Scheduling Translation for Parallel Processors". In //Scientific Programming// 3(13), 2005, IOS Press
  - Dario Domizioli. "Superblock Scheduling in Just-in-Time Compilation of Java Bytecode for a VLIW processor", Politecnico di Milano, July 2005
  - Paolo Palumbo. "Profile-Guided Selective Run-Time Compilation of Java Bytecode", Politecnico di Milano, July 2005
  - Gerlando Falauto, Martino Sykora. "Run-time compilation and scheduling of Java Bytecode for a VLIW machine", Politecnico di Milano, December 2003
  - Giovanni Agosta. "Dynamic Compilation for Architectures with Instruction-Level Parallelism". Doctoral dissertation, Politecnico di Milano, March 2004
  - Giovanni Agosta, Stefano Crespi Reghizzi, Gerlando Falauto, Martino Sykora. "Just-In-Time Scheduling Translation for Parallel Processors". In 3rd International Symposium on Parallel and Distributed Computing (ISPDC 2004), July 2004, Cork, Ireland