similar to: [LLVMdev] adding customized functions to the modules

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. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20130814/919cb805/attachment.html>

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

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

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++

I'm trying to make a regex to match common mailing list addresses and file messages to corresponding folders. I'm using sieve-test to try and understand what is happening. The sieve script is: require [ "fileinto", "regex", "variables" ]; if header :regex ["Sender"] ["(.*>[ \\t]*,?[ \\t]*)?([^-@]*)-([^-@]*)(-bounces)?@antlr.org"] {

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

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).

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

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). >> > > Bad plan. I doubt you can build a serious fortran

Hi Scott, I'm currently porting the Ada gcc front-end to LLVM. This is similar to what you want to do, so here are some comments from the trenches... > I plan on first attempting to implement the FORTRAN front-end by > co-opting the GCC FORTRAN parser. Good plan. However the Fortran front-end that comes with gcc 4.0 is known to be weak (llvm-gcc is based on gcc 4.0). That's

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

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

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'm getting a core dump with the following script: require [ "fileinto", "regex", "variables" ]; if address :domain :regex ["Reply-To", "Sender", "To", "Cc"] "antlr.org|mailman.unixodbc.org|research.att.com|wireshark.org" { if address :regex ["Reply-To", "Sender", "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,

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.

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,

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