PPT-Weakest Precondition Synthesis for Compiler Optimizations

Nuno Lopes and José Monteiro Deriving preconditions by hand is hard WPs are often nontrivial WPs derived by hand are often wrong Weaker preconditions expose more optimization opportunities. Bruce Worthington. Software Development Manager. Microsoft Corporation. Key Takeaways. Be a leader in advancing 64-bit computing. Adopt best practices and new tools. Let’s partner on new hardware directions. A Weakest Precondition Model for Assembly Language Programs January 28, 20032SUM(N,X) = IF N0 SUM(N-1,X+N) ELSE XNotice that the arguments in the recursive call of SUM are computed by applying the Sumit Gulwani. (MSR Redmond). Ramarathnam. . Venkatesan. (MSR Redmond). Saurabh. . Srivastava. (. Univ. . of Maryland). TexPoint. fonts used in EMF. . Read the . TexPoint. manual before you delete this box.: . Chapter 8. Classes. Collection of objects. Objects are not actions. Class names – Nouns. Method names – Verbs. What Makes a Good Class. Represent a single concept. Easy to understand. Examples. Concepts from math. in . Dyninst. Andrew . Bernat. , Matthew Legendre. Instrumentation is Complicated. User perspective: . “Insert some new code here, here, and here.”. Dyninst’s. perspective:. Relocation. – Move code to make space for instrumentation. Computational . Exascale. Workshop. December 2010. Dan Quinlan. Chunhua. Liao, Justin Too, Robb . Matzke. , Peter . Pirkelbauer. Center for Applied Scientific Computing. Lawrence Livermore National Laboratory. and High-Coverage Tests. Presented by Yoni Leibowitz. EXE & KLEE. Automatically Generating Inputs of Death. David Dill. Vijay . Ganesh. Cristian Cadar. Dawson Engler. Peter Pawlowski. KLEE. EXE. Unassisted & Automatic Generation of High-Coverage Tests for Complex System Programs. Yoram. . Bachrach. , Omer Lev, . Shachar. Lovett,. Jeffrey S. . Rosenschein. & . Morteza. . Zadimoghaddam. CoopMAS. 2013. St. Paul, Minnesota. Weakest link scenarios. Cooperative games. I. is a group consisting of . Research at UNT. . . Krishna . Kavi. Professor. Director of NSF Industry/University Cooperative Center . for Net-Centric Software and Systems (Net-Centric IUCRC). Computer Science and Engineering. The University of North Texas. By Namita Dave. Overview. What are compiler optimizations?. Challenges with optimizations. Current Solutions. Machine learning techniques. Structure of Adaptive compilers. Introduction. O. ptimization . Tyler Patton. Discussion:. Background. Sequential Optimizations. Parallelization of chess. Backgroun. d. : What is Chess?. Strategic 2 player game. 64 tiles. 16 pieces per player. Objective to capture the. & Assertions. Function Specification. Often want to communicate what a function does without indicating how it works:. The specification of a function can be defined by its pre-conditions and post-conditions. . AnindicationofhowtheconnectionsareshownbetweenthestatemachinesforthedifferentdynamicsortsisgiveninFigure8wherethecompletemodelfortheDWRdomainispresented33ScalingtolargedomainsUsingthebasicOHLEdesignin . Sagiv. Slides from . Zvonimir. . Rakamaric. . 2. First-Order Logic. A formal notation for mathematics, with expressions involving . Propositional symbols. Predicates. Functions and constant symbols.