'Constant propagation' presentation slideshows

Introduction to Dataflow Analysis ???????

Introduction to Dataflow Analysis ???????. Dataflow Analysis. Yesterday: How to analyze and transform within a basic block Today: How to do it for the entire procedure ???????? ??????????????????????????. Outline. Reaching Definitions ?? - ?? Available Expressions ????? Liveness ???.

829 views • 62 slides

Global Optimization

Global Optimization. Lecture 22. Lecture Outline. Global flow analysis Global constant propagation Liveness analysis. X := 3 Y := Z * W Q := 3 + Y. Y := Z * W Q := 3 + Y. Local Optimization. Recall the simple basic-block optimizations Constant propagation Dead code elimination.

734 views • 55 slides

Systematic Derivation of Static Analyses for Software Product Lines

V AR . A BS . I NT. Systematic Derivation of Static Analyses for Software Product Lines. Jan Midtgaard Aarhus Universtity. Claus Brabrand IT University of Copenhagen. Andrzej Wasowski IT University of Copenhagen. < Outline >. Introduction The ' IMP ' and ' IMP ' Language s

613 views • 50 slides

SSA

SSA. Agenda. SSA Introduction Converting to SSA Converting out of SSA SSA Example. SSA Introduction. SSA is a intermediate representation. SSA was developed by Ron Cytron, Jeanne Ferrante, Barry Rosen, Mark Wegman, and Ken Zadeck, researchers at IBM in the 1980s. Benefits

668 views • 47 slides

Constant Propagation for Loops with Factored Use-Def Chains

Constant Propagation for Loops with Factored Use-Def Chains. Reporter ? Lai, Yen-Chang. Outline. Introduction Background Constant Propagation Implementation and Experiment. Introduction.

656 views • 47 slides

Preliminary Transformations

Chapter 4 of Allen and Kennedy. Preliminary Transformations. Harel Paz. Introduction. Most dependence tests require subscript expressions to be linear or affine functions of loop induction variables, with known constant coefficient and at most a symbolic additive constant. Affine functions:

575 views • 47 slides

Handling Bit-Propagating Operations in Bit-Vector Reasoning

533 views • 38 slides

CS 201 Compiler Construction

505 views • 35 slides

Optimizations using SSA

445 views • 33 slides

Data Flow Analysis 4 15-411 Compiler Design

Data Flow Analysis 4 15-411 Compiler Design. Nov. 8, 2005. Example from last time. Nodes represent sequences of instructions with no branches. Edges represent control flow between nodes. Constant Propagation.

516 views • 31 slides

388 views • 31 slides

Optimizing Compilers CISC 673 Spring 2011 Yet More Data flow analysis

356 views • 27 slides

Optimization algorithms using SSA

Optimization algorithms using SSA. Software Optimizations & Restructuring Research Group School of Electronical Engineering Seoul National University 2006-21166 wonsub Kim. Using static single assignment form (SSA). Review of SSA translation Place ? function using dominance frontier

336 views • 27 slides

325 views • 25 slides

Data Flow Analysis 3 15-411 Compiler Design

Data Flow Analysis 3 15-411 Compiler Design. Nov. 8, 2005. Key Reference on Global Optimization. Gary A. Kildall, A Unified Approach to Global Program Optimization , ACM Symposium on Principles of Programming Languages, 1973, pages 194-206. From the abstract:

495 views • 24 slides

Compiler Construction Lecture 16

Compiler Construction Lecture 16. Data-Flow Analysis. Goal of Data-Flow Analysis. Automatically compute information about the program Use it to report errors to user (like type errors) Use it to optimize the program Works on control-flow graphs:

336 views • 20 slides

Advanced Compilers CMPSCI 710 Spring 2003 Data flow analysis

279 views • 19 slides

CSE 504-Compiler Project

CSE 504-Compiler Project. Group: 05 Supreet Padhi Aman Jain Duckjin Kang Wai -kit Sze Mandeep Singh. Lexical Analysis + Syntax Analysis. Event matcher DFA generation. AST generation + Type Checker. High level code optimizer. Intermediate code generator. Intermediate code optimizer.

173 views • 9 slides

COMPILERS IR Optimisations

COMPILERS IR Optimisations. hussein suleman uct csc3003s 2007. Types of Optimisations. Peephole Optimisation Considers only a restricted subset of the IR tree Global Optimisation Considers the entire program Modular Optimisation Considers each module in its entirety. Constant Folding.

174 views • 9 slides

COMPILERS IR Optimisations

COMPILERS IR Optimisations. hussein suleman uct csc3005h 2006. Types of Optimisations. Peephole Optimisation Considers only a restricted subset of the IR tree Global Optimisation Considers the entire program Modular Optimisation Considers each module in its entirety. Constant Folding.

170 views • 9 slides