Kumar, Dangeti Tharun and Upadrasta, Ramakrishna
(2018)
Vectorization, Obfuscation and P4 LLVM
Tool-chain.
Masters thesis, Indian Institute of Technology Hyderabad.
Abstract
This thesis broadly focuses on three different areas: Loop Vectorization, Code Obfuscation,
and P4LLVM compiler. The work in Loop vectorization starts with a
comparison of Auto-vectorization of GCC, ICC and LLVM compilers and show their
strengths and weakness. As an attempt to improve LLVM’s Auto-vectorization, we
propose to improve Loop Distribution using exact dependences from Polly. Our work
on Loop Distribution shows promising results. We developed an LLVM based Code
Obfuscation engine with various obfuscation techniques as transformation passes, our
techniques are novel and are different from existing works [1]. In hardware circuit
obfuscation several methods were proposed at the hardware level to secure the IP.
Our approach is to obfuscate the circuits at the software level, using code obfuscation
techniques.
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