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\section{Overview}  \label{se:overview}  The key to platform independence in our work is to encode express  the entire OSR machinery atan  intermediate code level, representation,  without resorting to machine-level code manipulation or special intrinsics of the intermediatecode  language. %Before describing how this is achieved in LLVM, we provide an overview of our approach. %\subsection{Overview}  %\label{ss:overview} 
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