Intel threading building block intel tbb flow graph as a. Aug 26, 2014 buy getting started with llvm core libraries by lopes, bruno cardoso, auler, rafael isbn. Stack overflow for teams is a private, secure spot for you and your coworkers to find and share information. This clang based tooling was fun to write and the porting api in clang is certainly interesting the subject of a future blog post. 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. The fifth workshop on the llvm compiler infrastructure in hpc. If you are looking for source analysis or source to source transformation tools, clang is probably a great solution for you.
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. Target language can be an assembly language or directly a binary machine code. A source to source translator using clangllvm libtooling g. I am doing source to source transformation using clang tools. 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. Nov, 2015 introduction of new keywords is always a breaking change. Its about the magic the compiler does for us to make things work.
Here is the function i am using to emit modified file. Clang is a core part of apples developer tools, used internally to build apples software stack and externally by millions of developers. Intel threading building block intel tbb flow graph as a software infrastructure layer for openclbased computations. Dataflow analysis and optimization for data coherence in. Customize your project to benefit from just in time compilation jit, static analysis and source to source transformations. Buy getting started with llvm core libraries by lopes, bruno cardoso, auler, rafael isbn. Its library based architecture made it a common platform for custom tools which are analyzing and transforming programs. 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. We continue to work on it, and are completing a reliable renaming tool. It supports apache 2 module configurations and shared objects site configuration files global configuration files originalmaintainer. In discrete gpus, such as nvidia gpus, data coherence is performed through a page fault mechanism transparent to the cuda8 software. Eurollvm17 the llvm compiler infrastructure project. Such transformations reduce obstacles experienced in developing gpu software and can increase efficiency and revision speed regardless of experience.
Clang source to source transformation stack overflow. Explore the depths of the llvm frontend, ir, code generator, and libraries, and learn how a modern compiler is implemented in a practical way. The clang team at apple is looking for an engineer to work on clangbased tools. Performing sourcetosource transformations with clang. A source to source translator using clangllvm libtooling gabor daniel balogh1, gihan r. As example, clang is used in production to build performancecritical software like chrome or firefox. The generated code is standard conforming openclc which is usable with unmodified opencl drivers. Dmitriy borisenkov llvm compiler developer independent. Boosting developer productivity with clang tilmann scheller senior llvm compiler engineer t. Can clang become a suitable tool for sourcetosource transformations.
In one embodiment, a publically available clang based frontend tool is used for this purpose. Op2 clang translator op2 is an api with associated libraries and preprocessors to generate parallel executables for applications on unstructured grids. Clang based tools drive ide features in xcode such as jump to definition and refactoring. 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. By using the cudamallocmanaged allocation primitive, the driver handles all data coherence tasks required to transfer pages. Clangllvms tooling library libtooling has long been touted as having such capabilities but have only demonstrated its use in simple source refactoring tasks. 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. 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. The clang team at apple is looking for an engineer to work on clang based tools. Leveraging the unique source to source transformation tools provided by clangllvm we have. Yes, i am talking about source to source code transformation or translation.
Clangbased tools drive ide features in xcode such as jumptodefinition and refactoring. Clang based static analysis results are also integrated to codecompass. Generating gpu code from a highlevel representation for. Mate karacsony software engineering manager ekata linkedin. 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. Contribute to op dslclang optranslator development by creating an account on github. 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. Modern sourcetosource transformation with clang and. Creating source to source translator stack overflow. Feb 20, 2017 clang based static analysis results are also integrated to codecompass. When invoked from the command line, it is intended to be run in tandem with a build of a codebase. 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.
Modern sourcetosource transformation with clang and libtooling. Its goal is it to make things visible which normally, and intentionally, happen behind the scenes. So i rewrote the tool presented in the previous post using libtooling. Program analysis toolkit a framework for analysis syntactic, semantic, dataflow, etc. Learn how to configure, build, and use llvm and clang based tools. Getting started with llvm core libraries bruno cardoso. 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. To support this, intel had an isisiibased translator from 8080 to 8086 source code named. Developed prototype of a tool for automated instrumenation of a source code using clangs source to source transformations clang. And yet, with the recent maturity of clang as a powerful and libraryfriendly. Everyday low prices and free delivery on eligible orders. Development is still early and transforms fall mostly into the first two categories.
Introduction of new keywords is always a breaking change. A sourcetosource translator using clangllvm libtooling. 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. William nell senior software engineer neural magic linkedin. Basic sourcetosource transformation with clang eli. 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. 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. Tools such as clangtidy and clazy offer readytouse source to source transformations. It shows how the compiler sees the code, for example by expanding lambdas, auto. 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. I have been able to build clang and support programs such as clangtidy, etc.
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. Us10545743b2 enhanced programming language source code. This book shows you all of the significant changes in the new standard. Figure 1 shows the architecture of gpuccwith dualmode compilation. Currently, i am able to generate modify the source code and save the modified files. Yang wrote effectively all of the clangbased source to source transformation code, more than 50,000 lines in total. Performing sourcetosource transformations with clang llvm. Detection of jni memory leaks based on extended bytecode.
1330 485 60 1398 466 323 661 1391 700 1529 1304 1206 850 88 231 508 58 852 321 1309 529 904 1284 919 1290 973 767 1086 1083 1353 389 600 1530 1006 1152 954 1161 503 1208 992 123 1400 1468 830 815 8 1040 310