Wed 20 Jun 2018 14:25 - 14:50 at Grand Ballroom CD - Dynamic Techniques Chair(s): Sorin Lerner

On-stack replacement (OSR) is essential technology for adaptive optimization, allowing changes to code actively executing in a managed runtime. The engineering aspects of OSR are well-known among VM architects, with several implementations available to date. However, OSR is yet to be explored as a general means to transfer execution between related program versions, which can pave the road to unprecedented applications that stretch beyond VMs. We aim at filling this gap with a constructive and provably correct OSR framework, allowing a class of general-purpose transformation functions to yield a special-purpose replacement. We describe and evaluate an implementation of our technique in LLVM. As a novel application of OSR, we present a feasibility study on debugging of optimized code, showing how our techniques can be used to fix variables holding incorrect values at breakpoints due to optimizations.

Wed 20 Jun

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14:00 - 15:40
Dynamic TechniquesPLDI Research Papers at Grand Ballroom CD
Chair(s): Sorin Lerner University of California, San Diego
14:00
25m
Talk
HHVM JIT: A Profile-Guided, Region-Based Compiler for PHP and Hack
PLDI Research Papers
Media Attached
14:25
25m
Talk
On-Stack Replacement, Distilled
PLDI Research Papers
Daniele Cono D'Elia Sapienza University of Rome, Italy, Camil Demetrescu Sapienza University Rome
Media Attached
14:50
25m
Talk
EffectiveSan: Type and Memory Error Detection using Dynamically Typed C/C++
PLDI Research Papers
Gregory J. Duck National University of Singapore, Singapore, Roland H. C. Yap National University of Singapore, Singapore
Media Attached
15:15
25m
Talk
Calling-to-Reference Context Translation via Constraint-Guided CFL-Reachability
PLDI Research Papers
Cheng Cai University of California, Irvine, Qirun Zhang University of California, Davis, Zhiqiang Zuo Nanjing University, China, Khanh Nguyen University of California, Irvine, Harry Xu University of California, Los Angeles (UCLA), Zhendong Su University of California, Davis
Media Attached