# HG changeset patch
# User Christian Urban <urbanc@in.tum.de>
# Date 1573085236 0
# Node ID 75d9f9e5906f32c18691954540ab9c38a81114a5
# Parent  1ee523c4f09891922fa4f05cf4dd6d2fb504e1cc
updated

diff -r 1ee523c4f098 -r 75d9f9e5906f progs/comb2.scala
--- a/progs/comb2.scala	Wed Nov 06 23:27:19 2019 +0000
+++ b/progs/comb2.scala	Thu Nov 07 00:07:16 2019 +0000
@@ -103,13 +103,13 @@
 }
 
 lazy val AExp: Parser[String, AExp] = 
-  (Te ~ "+" ~ AExp) ==> { case x ~ y ~ z => Aop("+", x, z): AExp } ||
-  (Te ~ "-" ~ AExp) ==> { case x ~ y ~ z => Aop("-", x, z): AExp } || Te 
+  (Te ~ "+" ~ AExp) ==> { case x ~ _ ~ z => Aop("+", x, z): AExp } ||
+  (Te ~ "-" ~ AExp) ==> { case x ~ _ ~ z => Aop("-", x, z): AExp } || Te 
 lazy val Te: Parser[String, AExp] = 
-  (Fa ~ "*" ~ Te) ==> { case x ~ y ~ z => Aop("*", x, z): AExp } || 
-  (Fa ~ "/" ~ Te) ==> { case x ~ y ~ z => Aop("/", x, z): AExp } || Fa  
+  (Fa ~ "*" ~ Te) ==> { case x ~ _ ~ z => Aop("*", x, z): AExp } || 
+  (Fa ~ "/" ~ Te) ==> { case x ~ _ ~ z => Aop("/", x, z): AExp } || Fa  
 lazy val Fa: Parser[String, AExp] = 
-   ("(" ~ AExp ~ ")") ==> { case x ~ y ~ z => y } || 
+   ("(" ~ AExp ~ ")") ==> { case _ ~ y ~ _ => y } || 
    IdParser ==> Var || 
    NumParser ==> Num
 
@@ -119,8 +119,8 @@
    (AExp ~ "!=" ~ AExp) ==> { case x ~ _ ~ z => Bop("!=", x, z): BExp } || 
    (AExp ~ "<" ~ AExp) ==> { case x ~ _ ~ z => Bop("<", x, z): BExp } || 
    (AExp ~ ">" ~ AExp) ==> { case x ~ _ ~ z => Bop(">", x, z): BExp } ||
-   ("(" ~ BExp ~ ")" ~ "&&" ~ BExp) ==> { case x ~ y ~ z ~ u ~ v => And(y, v): BExp } ||
-   ("(" ~ BExp ~ ")" ~ "||" ~ BExp) ==> { case x ~ y ~ z ~ u ~ v => Or(y, v): BExp } ||
+   ("(" ~ BExp ~ ")" ~ "&&" ~ BExp) ==> { case _ ~ y ~ _ ~ _ ~ v => And(y, v): BExp } ||
+   ("(" ~ BExp ~ ")" ~ "||" ~ BExp) ==> { case _ ~ y ~ _ ~ _ ~ v => Or(y, v): BExp } ||
    ("true" ==> (_ => True: BExp )) || 
    ("false" ==> (_ => False: BExp )) ||
    ("(" ~ BExp ~ ")") ==> { case _ ~ x ~ _ => x }
@@ -128,14 +128,14 @@
 // statement / statements
 lazy val Stmt: Parser[String, Stmt] =
   (("skip" ==> (_ => Skip: Stmt)) ||
-   (IdParser ~ ":=" ~ AExp) ==> { case x ~ y ~ z => Assign(x, z): Stmt } ||
-   ("write(" ~ IdParser ~ ")") ==> { case x ~y ~ z => Write(y): Stmt } ||
+   (IdParser ~ ":=" ~ AExp) ==> { case x ~ _ ~ z => Assign(x, z): Stmt } ||
+   ("write(" ~ IdParser ~ ")") ==> { case _ ~ y ~ _ => Write(y): Stmt } ||
    ("if" ~ BExp ~ "then" ~ Block ~ "else" ~ Block) ==>
-    { case x ~ y ~ z ~ u ~ v ~ w => If(y, u, w): Stmt } ||
-   ("while" ~ BExp ~ "do" ~ Block) ==> { case x ~ y ~ z ~ w => While(y, w) }) 
+    { case _ ~ y ~ _ ~ u ~ _ ~ w => If(y, u, w): Stmt } ||
+   ("while" ~ BExp ~ "do" ~ Block) ==> { case _ ~ y ~ _ ~ w => While(y, w) }) 
  
 lazy val Stmts: Parser[String, Block] =
-  (Stmt ~ ";" ~ Stmts) ==> { case x ~ y ~ z => x :: z : Block } ||
+  (Stmt ~ ";" ~ Stmts) ==> { case x ~ _ ~ z => x :: z : Block } ||
   (Stmt ==> ( s => List(s) : Block))
 
 // blocks (enclosed in curly braces)
diff -r 1ee523c4f098 -r 75d9f9e5906f slides/slides06.pdf
Binary file slides/slides06.pdf has changed
diff -r 1ee523c4f098 -r 75d9f9e5906f slides/slides06.tex
--- a/slides/slides06.tex	Wed Nov 06 23:27:19 2019 +0000
+++ b/slides/slides06.tex	Thu Nov 07 00:07:16 2019 +0000
@@ -373,31 +373,31 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\begin{frame}[c]
-\frametitle{Operator Precedences}
-
-
-To disambiguate
-
-\begin{center}
-\bl{\begin{tabular}{lcl}
-$\meta{E}$ & $::=$ &  $\meta{E} \cdot + \cdot \meta{E} \;|\;\meta{E} \cdot * \cdot \meta{E} \;|\;( \cdot \meta{E} \cdot ) \;|\;\meta{N}$ \\
-\end{tabular}}
-\end{center}
-
-Decide on how many precedence levels, say\medskip\\
-highest for \bl{$()$}, medium for \bl{*}, lowest for \bl{+}
-
-\begin{center}
-\bl{\begin{tabular}{lcl}
-$\meta{E}_{low}$ & $::=$ & $\meta{E}_{med} \cdot + \cdot \meta{E}_{low} \;|\; \meta{E}_{med}$ \\
-$\meta{E}_{med}$ & $::=$ & $\meta{E}_{hi} \cdot * \cdot \meta{E}_{med} \;|\; \meta{E}_{hi}$\\
-$\meta{E}_{hi}$ & $::=$ &  $( \cdot \meta{E}_{low} \cdot ) \;|\;\meta{N}$ \\
-\end{tabular}}
-\end{center}\pause
-
-\small What happens with \bl{$1 + 3  + 4$}?
-\end{frame}
+%\begin{frame}[c]
+%\frametitle{Operator Precedences}
+%
+%
+%To disambiguate
+%
+%\begin{center}
+%\bl{\begin{tabular}{lcl}
+%$\meta{E}$ & $::=$ &  $\meta{E} \cdot + \cdot \meta{E} \;|\;\meta{E} \cdot * \cdot \meta{E} \;|\;( \cdot \meta{E} \cdot ) \;|\;\meta{N}$ \\
+%\end{tabular}}
+%\end{center}
+%
+%Decide on how many precedence levels, say\medskip\\
+%highest for \bl{$()$}, medium for \bl{*}, lowest for \bl{+}
+%
+%\begin{center}
+%\bl{\begin{tabular}{lcl}
+%$\meta{E}_{low}$ & $::=$ & $\meta{E}_{med} \cdot + \cdot \meta{E}_{low} \;|\; \meta{E}_{med}$ \\
+%$\meta{E}_{med}$ & $::=$ & $\meta{E}_{hi} \cdot * \cdot \meta{E}_{med} \;|\; \meta{E}_{hi}$\\
+%$\meta{E}_{hi}$ & $::=$ &  $( \cdot \meta{E}_{low} \cdot ) \;|\;\meta{N}$ \\
+%\end{tabular}}
+%\end{center}\pause
+%
+%\small What happens with \bl{$1 + 3  + 4$}?
+%\end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -672,22 +672,38 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\mode<presentation>{
 \begin{frame}[c]
-\frametitle{\begin{tabular}{c}Java Virtual Machine\end{tabular}}
+\frametitle{Java Virtual Machine}
 
 \begin{itemize}
 \item introduced in 1995
 \item is a stack-based VM (like Postscript, CLR of .Net)
-\item contains a JIT compiler
-\item many languages take advantage of JVM's infrastructure (JRE)
+\item contains a JIT compiler\\
+\begin{itemize}
+\item From the Cradle to the Holy Graal - the JDK Story
+\item \url{https://www.youtube.com/watch?v=h419kfbLhUI}
+\end{itemize}
 \item is garbage collected $\Rightarrow$ no buffer overflows
 \item some languages compile to the JVM: Scala, Clojure\ldots
 \end{itemize}
 
-\end{frame}}
+\end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{frame}[c]
+\frametitle{LLVM}
+
+\begin{itemize}
+\item LLVM started by academics in 2000 (University of Illinois in 
+Urbana-Champaign)
+\item suite of compiler tools
+\item SSA-based intermediate language
+\item no need to allocate registers
+\end{itemize}  
+\end{frame}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+  
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %\begin{frame}[c]