deletions | additions       diff --git a/osr-llvm.tex b/osr-llvm.tex  index 83cd233..74156be 100644  --- a/osr-llvm.tex  +++ b/osr-llvm.tex 
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\label{se:ir-x86-lowering}  %The final step to be performed before execution is native code generation.   \myfigure\ref{fig:isordx86-64} shows the x86-64 code generated by the  LLVM back-end  for {\tt isordfrom} and {\tt isordto}. For the sake of comparison with the native code that would be generated for the original non-OSR versions, additions resulting from the IR instrumentation are in grey, while removals are struck-through. Notice that the OSR intrusiveness in {\tt isordfrom} is minimal, consisting of just two assembly instructions with register and immediate operands. As a result of induction variable canonicalization in the LLVM back-end, loop index {\tt i} and hotness counter {\tt p.osr} are fused in register {\tt\%r12}. We also note that tail call optimization is applied in the OSR-firing block, resulting in no stack growth during an OSR. The continuation function {\tt isordto} is identical to the optimized version of {\tt isord}, except that the loop index is passed as a parameter in {\tt \%rdx} and no loop pre-header is needed since OSR jumps directly in the loop body. %\subsection{\osrkit\ Instrumentation API}  %\label{se:instrum-api}