Changeset 2941

Timestamp:

Mar 22, 2013, 9:46:18 PM (7 years ago)

Author:

campbell

Message:

Update proof slides.

Location:

Deliverables/Dissemination/proof-structured-traces

Files:

• compiler-plain.pdf (modified) (previous)
• compiler.pdf (modified) (previous)
• compiler.svg (modified) (9 diffs)
• proof-structured-traces.pdf (modified) (previous)
• proof-structured-traces.tex (modified) (10 diffs)

Deliverables/Dissemination/proof-structured-traces/compiler.svg

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Deliverables/Dissemination/proof-structured-traces/proof-structured-traces.tex

@@ -32 +32 @@
 \footnotesize Project FP7-ICT-2009-C-243881
 }
-\date{CerCo workshop, HiPEAC 2013\\23rd January 2013}
+\date{CerCo workshop\\23rd March 2013}
 \maketitle
 
@@ -50 +50 @@
 \end{itemize}
 
+Talk will only mention \alert{time} costs; but also do stack.
+
 \bigskip
 \alert{Extract} compiler code from development for practical execution.
@@ -83 +85 @@
 Concentrate on cost correctness.
 \begin{itemize}
-\item Keep changes to \alert{extensional} proof minimal
+\item Keep \alert{extensional} proofs as separate as possible
 \end{itemize}
 }
@@ -91 +93 @@
 
 \begin{center}
-\includegraphics[width=0.7\linewidth]{compiler-plain.pdf}
+\includegraphics[width=0.8\linewidth]{compiler-plain.pdf}
 \end{center}
 
@@ -107 +109 @@
   \begin{itemize}
   \item 8051 machine code
-  \item Clight code annotated with \alert{cost labels}
-  \item \alert{Cost map} of cost labels to 8051 clock cycles
-  \end{itemize}
-\end{itemize}
+  \item Clight code instrumented with costs in 8051 clock cycles
+  \end{itemize}
+\end{itemize}
+Instrumentation updates global cost variable; suitable for further analysis and
+verification.
 }
 
@@ -337 +340 @@
 
 \onslide<2->
-Need to enforce correct call/return structure.
+\alert{Need to enforce correct call/return structure.}
 
 \onslide<3>
@@ -369 +372 @@
 
 \begin{center}
-\includegraphics[width=0.7\linewidth]{compiler.pdf}
+\includegraphics[width=0.8\linewidth]{compiler.pdf}
 \end{center}
 
@@ -404 +407 @@
 Split normal simulation proof into three:
 \begin{enumerate}
-\item \blue{normal} steps become zero or more \blue{normal} steps
 \item \blue{call/return} steps become a \blue{call/return} step plus zero or
   more \blue{normal} steps
-\item \blue{cost} steps are preserved
+\item \blue{cost} label steps are preserved
+\item other \blue{normal} steps become zero or more \blue{normal} steps
 \end{enumerate}
 
@@ -470 +473 @@
 
 \begin{center}
-\includegraphics[width=0.7\linewidth]{compiler.pdf}
+\includegraphics[width=0.8\linewidth]{compiler.pdf}
 \end{center}
 
@@ -492 +495 @@
 \item Preserving trace structure provides correctness in more challenging
   setting
-\item Formal proof still in progress
-  \begin{itemize}
-  \item key definitions, structured trace lifting, some simulations done
-  \item increasing confidence in approach
-  \end{itemize}
-\item[$\star$] Don't need huge changes to existing proofs
+\item Finishing off formal proof
+  \begin{itemize}
+  \item axioms for some regular simulation results
+  \item concentrating on intensional proofs
+  \end{itemize}
+\item[$\star$] Don't need huge changes to extensional proof techniques
 \end{itemize}