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%We generated the IR modules for our experiments with {\tt clang}, starting from the C version of the \shootout\ suite. In the version of the code we will refer to as {\em unoptimized}, no LLVM optimization passes were performed on the code other than {\em mem2reg}, which promotes memory references to register references and constructs the SSA (Static Single Assignment) form. Starting from this version, we then generate an {\em optimized} version performing using the LLVM IR optimizer {\tt opt} at {\tt -O1} optimization level.  \ifx\noauthorea\undefined  \medskip \newline  \fi  \noindent We generate the IR modules for our experiments with {\tt clang} starting from the C version of the \shootout\ suite. To cover scenarios where OSR machinery is inserted in programs with different optimization levels, we consider two versions: 1) {\em unoptimized}, where the only LLVM optimization we perform is {\tt mem2reg} to promote stack references to registers and construct the SSA form; 2) {\em optimized}, where we apply {\tt opt} {\tt -O1} to the unoptimized version.