similar to: [LLVMdev] gerate LLVM IR from an AST output from ANTLR

On Wed, Aug 14, 2013 at 12:31 PM, emily thomas <emilythomas007 at gmail.com>wrote: > Hi, > I am a complete newbie to LLVM. I have an ANTLR parser, that outputs an > AST. I want to comvert this AST to a LLVM IR, Can someone point me some > relevant documentation/examples/ etc. on how to go about doing this? > TIA. > > http://llvm.org/docs/tutorial/LangImpl3.html -Eli

Thanks. So, in this tutorial, the LLVM IR generation code is embedded in the parser. I already have an AST, and if I dont want to touch the parser code, is there a way to generate the IR? or do I just walk the tree and generate the iR? On Wed, Aug 14, 2013 at 3:36 PM, Eli Friedman <eli.friedman at gmail.com>wrote: > On Wed, Aug 14, 2013 at 12:31 PM, emily thomas <emilythomas007 at

I am new to llvm, so I apologise for the trivial question. I have an AST from antlr, and I am walking the tree and generating llvm IR from it. When I get a function definition, I call <module>->getOrInsertFunction(..). But, my function arguments can have parameter or return types not defined in enum TypeID. So, is there a way to map such functions? Or is the only way to do this is to

Hi, I've not got any experience using ANTLR to parse C++, however, you will find that there only exists a C code generator for ANTLR and NOT a C++ one. Over the years numerous people have requested a C++ code generation template but alas there is still only a C one. Just a heads up. Granville 2009/7/11 Vikram S. Adve <vadve at cs.uiuc.edu> > We are looking for an open source C++

Has anyone written a grammar for LLVM for ANTLR. I mean an ANTLR grammar that parses LLVM instructions. Is an LLVM grammar available for any other parsing tool? Surinder

On Jul 11, 2009, at 12:40 PM, Vikram S. Adve wrote: > We are looking for an open source C++ parser other than g++ if > possible. Clang would be great but its C++ support is still some > way away and we need something that works or nearly works now. Does > anyone have any experience with ANTLR for parsing C++ and for > extending their C++ parser? Any other feedback on

That sounds like a problem. Just so I understand, do you mean there isn't the run-time support etc. to write back ends for the C++ language, or that the compiler IR is also somehow insufficient to write a code generator? --Vikram Associate Professor, Computer Science University of Illinois at Urbana-Champaign http://llvm.org/~vadve On Jul 11, 2009, at 3:00 PM, Granville Barnett

When you create a parser via ANTLR you specify the output language of the resulting recursive descent parser, at the moment there exists no C++ output template to my knowledge, thus you would have to generate the parser as C code for which a template exists. The runtime support should be there, at least partially but it won't use things like exceptions, nor will it have a very modular design

For a LL(1) parser, it might be a little bit difficult to parse complex grammar like C++, but it might work. ANTLR worked great when other codes were written in Java, but it was a little bit painful when using other languages like python. I worked on it two years ago. I guess they might have some improvement now. Haohui On 07/11/2009 02:40 PM, Vikram S. Adve wrote: > We are looking for an

Hi Sam, Thanks for your reply. I am implementing my research (http://www.it.usyd.edu.au/~suri/Detecting%20Buffer%20Over.pdf), a translation of LLVM to a simple non-deterministic language to detect buffer overflows. It involves (1) printing a control flow graph of basic blocks of a function (easily done) (2) translating each llvm statement to a corresponding data flow language (needs ASTs to

We are looking for an open source C++ parser other than g++ if possible. Clang would be great but its C++ support is still some way away and we need something that works or nearly works now. Does anyone have any experience with ANTLR for parsing C++ and for extending their C++ parser? Any other feedback on ANTLR in general would be welcome too. Thanks, --Vikram Associate Professor,

Hello Surinder, The existing hand-written parser is callable from almost anywhere so the only reason you'd need to have a parser for it would be to extend it. Originally it was written using Flex and Bison but Chris Lattner rewrote it from scratch to catch more errors at the parsing stage. The only feature I've found to be missing from the existing LLVM-AS utility was an include

I've done extensive research on the subject and if you want to parse ALL of C++, there are only two options, g++ or the Edison Design Group C++ front-end. Both of these have projects designed to make this easier LLVM (as you know) and Rose (http://www.rosecompiler.org/), which works with the EDG compiler. AspectC++, OpenC++, Antler, TLX, all work with only a portion of the grammer. On Sat,

Right, I understand that. I was hoping there was such an implementation using ANTLR since it looks like a fairly mature project. I'm not sure how stable or mature Elsa is (but comments to clarify that would be appreciated.). E.g., a quick scan of their Web page shows the comment that they only have a partial type checker. It also says their template instantiation is incomplete.

Howdy, I just finished a book called Language Implementation Patterns but I ran out of room at 400 pages before I could squeeze in an LLVM example. I left a link in the book to the ANTLR wiki so I can slap something together: http://www.antlr.org/wiki/display/ANTLR3/LLVM The code is good but the description was slapped together I'm afraid (i.e., don't take it as an example of the book

On Jul 11, 2009, at 1:41 PM, Vikram S. Adve wrote: > Right, I understand that. I was hoping there was such an > implementation using ANTLR since it looks like a fairly mature > project. Not that I'm aware of. > I'm not sure how stable or mature Elsa is (but comments to clarify > that would be appreciated.). E.g., a quick scan of their Web page > shows the

Stefan Oestreicher <stefan.oestreicher at deluxe-design.at> writes: [snip] > Unfortunately no matter what I do to the makefile of the compiler tool > it won't compile. I always get errors in llvm/Support/Annotation.h that > look like some type declarations are missing. Unfortunately my > experience building C/C++ programs, especially with autoconf etc., is > very

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Hi, I'm working on a compiler for a small toy language and I'm using the llvm sample project layout, i.e. the llvm make system. I've got one library (lomo-core) which contains my parser and all that stuff and one tool (lomoc) which is my compiler executable. The tool declares the library as dependency using: USEDLIBS = lomo-core Now that I've started to add IR generation I

On 20 Mar 2007, at 15:45, Jeff Cohen wrote: > Duncan Sands wrote: >>> If that fails, I will build a front-end using ANTLR [http:// >>> antlr.org] a parser generator with which I am familiar and for >>> which a FORTRAN grammar is already available (targeting an >>> obsolete version of ANTLR, but it should not be too difficult to >>> update).