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Compiled Low-Level Virtual Instruction Set Simulation and Profiling for Code Partitioning and ASIP-Synthesis in Hardware/Software Co-Design

Carsten Gremzow

Summer Computer Simulation Conference 2007 (SCSC 2007)
San Diego, California (USA), July 15-18, 2007


We present ongoing work and first achievements in static and detailed quantitative runtime analysis of LLVM byte code for the purpose of automatic procedural level partitioning and cosynthesis of complex software systems. Runtime behavior is captured by reverse compilation of LLVMbytecode into augmented, self-profiling ANSI-C simulator programs retaining the LLVM instruction level. The actual global data flow is captured both in quantity and value range to guide function unit layout in the synthesis of application specific processors. Static code analysis focuses on the inter-procedural data flow via e.g. function parameters and global variables to uncover a programís potential paths of data exchange.

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