Introduction of new keywords is always a breaking change. Customize your project to benefit from just in time compilation jit, static analysis and source to source transformations. A tool like this is capable doing many boring parts of what is required in porting, such as renaming methods, and it works quite well, but it. As it provides a rich abstract syntax tree representation, it is widely used especially for source to source transformations, like vectorization of loops, or translation between different language dialects. Feb 20, 2017 clang based static analysis results are also integrated to codecompass. A sourcetosource translator, sourcetosource compiler s2s compiler, transcompiler. Compiler toolchains supporting source to source translation of code written in mainstream languages currently lack the capabilities to carry out such wideranging code transformations. Clangllvms tooling library libtooling 6 has long been touted as facilitating source to source translation capabilities but have only demonstrated its use in simple source refactoring and.
In discrete gpus, such as nvidia gpus, data coherence is performed through a page fault mechanism transparent to the cuda8 software. Having a web based, pluginable, extensible architecture, the codecompass framework can be an open platform to further code comprehension, static analysis and software metrics efforts. This is how clang based source to source transformations work analysis of the ast lets us find out where to apply changes, and a rewriter is used to actually apply those changes. Basic sourcetosource transformation with clang eli. Cu2cl is a workin progress academic prototype translator that endeavors to provide translation of many of the most frequently used cuda features. By using the cudamallocmanaged allocation primitive, the driver handles all data coherence tasks required to transfer pages. A sourcetosource translator using clangllvm libtooling. Us10545743b2 enhanced programming language source code. Eurollvm17 the llvm compiler infrastructure project. This repository contains the implementation of a clang based preprocessor, which performs source to source translation of op2 applications. Learn how to configure, build, and use llvm and clang based tools.
Modern sourcetosource transformation with clang and libtooling. Can clang become a suitable tool for sourcetosource transformations. When invoked from the command line, it is intended to be run in tandem with a build of a codebase. Having a webbased, pluginable, extensible architecture, the codecompass framework can be an open platform to further code comprehension, static analysis and software metrics efforts. It shows how the compiler sees the code, for example by expanding lambdas, auto. If you are looking for source analysis or source to source transformation tools, clang is probably a great solution for you.
Performing sourcetosource transformations with clang. Explore the depths of the llvm frontend, ir, code generator, and libraries, and learn how a modern compiler is implemented in a practical way. I am doing source to source transformation using clang tools. Everyday low prices and free delivery on eligible orders. The clang team at apple is looking for an engineer to work on clang based tools. Its library based architecture made it a common platform for custom tools which are analyzing and transforming programs.
Clangllvms tooling library libtooling has long been touted as having such capabilities but have only demonstrated its use in simple source refactoring tasks. Clang based static analysis results are also integrated to codecompass. Dataflow analysis and optimization for data coherence in. Creating source to source translator stack overflow. In one embodiment, a publically available clang based frontend tool is used for this purpose. Development is still early and transforms fall mostly into the first two categories.
To support this, intel had an isisiibased translator from 8080 to 8086 source code named. Aug 26, 2014 buy getting started with llvm core libraries by lopes, bruno cardoso, auler, rafael isbn. While this talk is not intended to be a tutorial how to develop such tools i will cover the algorithms, methods and interesting heuristics that are utilized by them. This book shows you all of the significant changes in the new standard. Stack overflow for teams is a private, secure spot for you and your coworkers to find and share information. The generated code is standard conforming openclc which is usable with unmodified opencl drivers. Figure 1 shows the architecture of gpuccwith dualmode compilation. Detection of jni memory leaks based on extended bytecode. By using the cudamallocmanaged allocation primitive, the driver handles all data coherence tasks required to transfer pages between the cpu and the gpu, when necessary.
It supports apache 2 module configurations and shared objects site configuration files global configuration files originalmaintainer. Target language can be an assembly language or directly a binary machine code. This clang based tooling was fun to write and the porting api in clang is certainly interesting the subject of a future blog post. A source to source translator using clangllvm libtooling g. Intel threading building block intel tbb flow graph as a software infrastructure layer for openclbased computations. Its about the magic the compiler does for us to make things work. Ast, rewriter software engeneer research and development company rubiconinnovation. A tool like this is capable doing many boring parts of what is required in porting, such as renaming methods, and it works quite well, but it will never port from qtwidgets to qml for example. As example, clang is used in production to build performancecritical software like chrome or firefox. Clang is a core part of apples developer tools, used internally to build apples software stack and externally by millions of developers.
Contribute to op dslclang optranslator development by creating an account on github. The link between the two is the very accurate source location information managed by the ast for each node. Nov, 2015 introduction of new keywords is always a breaking change. Clang source to source transformation stack overflow. Clangbased tools drive ide features in xcode such as jumptodefinition and refactoring. A source to source translator using clangllvm libtooling gabor daniel balogh1, gihan r. The new idea in my post is not that the committee introduce breaking changes, its that they consider being more aggressive about it by taking into account how the impact of such changes can be mitigated by clangbased source to source transformation tools. This is how clangbased source to source transformations work analysis of the ast lets us find out where to apply changes, and a rewriter is used to actually apply those changes. Mate karacsony software engineering manager ekata linkedin. Op2 clang translator op2 is an api with associated libraries and preprocessors to generate parallel executables for applications on unstructured grids. Dms is a library we called it a toolkit of facilities on can compose to achieve anlaysis andor automated translation.
Getting started with llvm core libraries bruno cardoso. Any compiler is, roughly, a sourcetosource translator. Buy getting started with llvm core libraries by lopes, bruno cardoso, auler, rafael isbn. Boosting developer productivity with clang tilmann scheller senior llvm compiler engineer t. Currently, i am able to generate modify the source code and save the modified files. Leveraging the unique source to source transformation tools provided by clangllvm we have. And yet, with the recent maturity of clang as a powerful and libraryfriendly. Mudalige2 and istvan zoltan reguly1 1pazmany peter catholic university, information technology and bionics 2the university of warwick, department of computer science domain specific languages or active library frameworks have recently emerged as an.
Program analysis toolkit a framework for analysis syntactic, semantic, dataflow, etc. This is how clangbased source to source transformations work. Dmitriy borisenkov llvm compiler developer independent. Here is the function i am using to emit modified file. The clang team at apple is looking for an engineer to work on clangbased tools. So i rewrote the tool presented in the previous post using libtooling. Most tms tools aim to automate many manual parts of the localization process by including version control system vcs integrations, cloud services integrations, project reporting, as well as the.
The fifth workshop on the llvm compiler infrastructure in hpc. Its goal is it to make things visible which normally, and intentionally, happen behind the scenes. Yes, i am talking about source to source code transformation or translation. Developed prototype of a tool for automated instrumenation of a source code using clangs source to source transformations clang. Intel threading building block intel tbb flow graph as a. Performing sourcetosource transformations with clang llvm. Eric eide, a research professor in computer science at the university of utah, is the other major creduce contributor and gave useful feedback on a draft of this piece. Also, template instantiation is no longer an issue because gpucc now has the complete translation unit which includes information about template instantiation on both host and device sides. This document is intended to show how to build a useful sourcetosource translation tool based on clangs libtooling.
Currently it can be run either from the command line or if you use macos then within xcode. Such transformations reduce obstacles experienced in developing gpu software and can increase efficiency and revision speed regardless of experience. Modern sourcetosource transformation with clang and. Clang based tools drive ide features in xcode such as jump to definition and refactoring. I have been able to build clang and support programs such as clangtidy, etc.
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