more print_x86 -> prelude and conclusion

book.tex

@@ -2664,7 +2664,7 @@ outstanding problems.
 \path[->,bend right=15] (Cvar-2) edge [left] node {\ttfamily\footnotesize select\_instr.} (x86-2);
 \path[->,bend left=15] (x86-2) edge [above] node {\ttfamily\footnotesize assign\_homes} (x86-3);
 \path[->,bend left=15] (x86-3) edge [above] node {\ttfamily\footnotesize patch\_instr.} (x86-4);
-\path[->,bend left=15] (x86-4) edge [above] node {\ttfamily\footnotesize print\_x86} (x86-5);
+\path[->,bend left=15] (x86-4) edge [above] node {\ttfamily\footnotesize prelude\_and\_concl.} (x86-5);
 \end{tikzpicture}
 \fi}
 
@@ -2681,7 +2681,7 @@ outstanding problems.
 \path[->,bend right=15] (Lvar-2) edge [left] node {\ttfamily\footnotesize select\_instr.} (x86-1);
 \path[->,bend right=15] (x86-1) edge [below] node {\ttfamily\footnotesize assign\_homes} (x86-2);
 \path[->,bend left=15] (x86-2) edge [above] node {\ttfamily\footnotesize patch\_instr.} (x86-3);
-\path[->,bend right=15] (x86-3) edge [below] node {\ttfamily\footnotesize print\_x86} (x86-4);
+\path[->,bend right=15] (x86-3) edge [below] node {\ttfamily\footnotesize prelude\_and\_concl.} (x86-4);
 \end{tikzpicture}
 \fi}  
 \caption{Diagram of the passes for compiling \LangVar{}. }