Abstract
Rabbit is an LLVM-based hybrid binary translator with many diverse optimizations to improve the performance. In addition to platform-independent hyperchaining (indep), Rabbit also includes platform-dependent hyperchaining (dep) on both x86-64 and RISC-V architectures for both direct and indirect branches. The dep optimizations leverage architecture-specific instructions and patches to achieve the same effect as the indep optimiztion but gains more performance improvement. The experimental results show that the platform-dependent hyperchaining can achieve 1.08x and 1.05x speedup in comparison with platform-independent hyperchaining for direct and indirect branches, respectively. The experimental results also show that platform-dependent hyperchaining incurs little memory space overhead in comparison with platform-independent hyperchaining.
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