similar to: [LLVMdev] Writing an LLVM Compiler Backend

Hallo, LLVMdev! I have found you in LLVM Developers page (http://llvm.org/developers.cgi). First thank you for all of your work with LLVM. About: I work with the LLVM Compiler Infrastructure to implement a backend for specific processor xPEC of chip NetX (http://hilscher.com/netx.html). So C-code already possible compile to the native xPEC assembly code (works perfect! LLWM a big

Do you want to debug the native executables generated by your back-end? What debug info format your native executables support? In general, this is how it works for that case. 1. clang-cc -g generates required debug info in the .bc file. 2. The backend (llc) converts that to Dwarf (or something else as desired by that back-end). 3. Native debuggers like (gdb) understands Dwarf and provide source

Hallo! I have found the LLVM-project and hope it can be useful for me in my work. There is a processor with a simple assembly code (http://hilscher.com/ xPEC- processor). The task is that I need a "translator" from C/C++ to native assembly code. And understand, that I need to write a backend specifying my target (convertion a llvm-IR code to assembly). Can you help, suggest to

Hi all LLVMdev! Here is a question: I try to understand how I can realize a debugging in LLVM!? I have written a back end for my target and now I need a debug. I asked developers Chris Lattner and Robert L. Bocchino. They recommend me ask the LLVMdev. Is there a tool like "llvm-db" about Robert said? Here a mail from Robert: On Jun 29, 2009, at 17:14 PM, Robert L. Bocchino

Hello! I am working with LLVM project to compile for specific processor (xPEC-processor from NetX chip, http://hilscher.com/ ). I have done support of this target successfully! Assembler code can be emitted with debug information. LLVM - great!) But now I am looking for generation of machine code for my target. I have seen, that "llc" has option "-filetype". It has

Hi Artem, GDB only works with native applications. If you compile your code to a native executable with -g, then debug info should work for you. However, if you've built your own backend, then you may need to add the debug info hooks etc. If you have further questions, please email the llvmdev mailing list instead of me directly, thanks! -Chris On Jun 26, 2009, at 11:11 AM,

----- Original Message ---- > From aaronngray.lists at googlemail.com Mon Jul 27 15:14:40 2009 > From: aaronngray.lists at googlemail.com (Aaron Gray) > Date: Mon, 27 Jul 2009 21:14:40 +0100 > Subject: [LLVMdev] llc - generation of native machine code > > > On Mon, Jul 27, 2009 at 8:25 AM, Rudskyy<tema13tema at yahoo.de> wrote: > > > But now I am looking for

On Mon, Jul 27, 2009 at 8:25 AM, Rudskyy<tema13tema at yahoo.de> wrote: > But now I am looking for generation of machine code for my target. I have > seen, that “llc” has option "-filetype". > > It has default value "-filetype=asm", but has more values, as > "-filetype=obj" and "-filetype=dynlib". > > “obj” is very interesting, but

On Sun, Apr 24, 2005 at 07:15:03PM +0800, Tzu-Chien Chiu wrote: > i'd like to know if there is any plan or existing work to add a Aho's > trig language like code generator generator? I'm not aware of either the trig language code generator nor any work to implement it in LLVM. > "...If you are starting a new port, we recommend that you write the > instruction

(Sorry about the wall of text, it ended up as a brain dump of a bunch of backend-related documentation that I know about/have bookmarked in the past. Hopefully there's something useful in there.) If you haven't stumbled across them already, these might be helpful: http://llvm.org/devmtg/2009-10/Korobeynikov_BackendTutorial.pdf http://jonathan2251.github.io/lbd/

Hi LLVM developers, As one of the maintainers of AVR target, I want to update WritingAnLLVMBackend document to be familiar with the development of backend, because: 1. The structure of LLVMTargetMachine https://github.com/llvm-mirror/llvm/blob/master/docs/WritingAnLLVMBackend.rst#target-machine has been changed a lot! 2. LLVMInitializeSparcTargetInfo

Here's a patch for WritingAnLLVMBackend.html that describes how instruction operand mapping works based on an IRC chat I had. Can someone review and apply it? -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: write.patch URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20081120/c67a72f8/attachment.ksh>

Hi All, I'm happy to say that Mason Woo took the existing "how to write a compiler backend" and completed it. It is now an extremely useful reference for people starting a new backend and/or hacking on existing ones. I really want to thank Mason for doing this, and if you have questions or comments, please let him know! Here's a link:

On Fri, 6 May 2005, Tzu-Chien Chiu wrote: > llvm/lib/Target/X86/X86InstrInfo.td: > class X86Inst<bits<8> opcod, Format f, ImmType i, dag ops, string > AsmStr> : Instruction { > .... > dag OperandList = ops; > string AsmString = AsmStr; > } > > def MOV32mi : Ii32<0xC7, MRM0m, (ops i32mem:$dst, i32imm:$src), > "mov{l}

i'd like to know if there is any plan or existing work to add a Aho's trig language like code generator generator? "...If you are starting a new port, we recommend that you write the instruction selector using the SelectionDAG infrastructure." any other things i should know before i write one? thank you.

I think a multiclass may be a better fit for what you are trying to do. In fact, this is the canonical example for multiclasses: <http://llvm.org/docs/TableGenFundamentals.html#multiclass-definitions-and-instances>. --Sean Silva On Mon, Aug 6, 2012 at 1:55 PM, Villmow, Micah <Micah.Villmow at amd.com> wrote: > I’m trying to find examples of the foreach pattern being used in

On 7/13/2020 21:30, Thomas Lively via llvm-dev wrote: > Part of the problem is that ISel patterns are like their own DSL inside > the TableGen DSL, so keywords like "ins", "outs", and "ops" aren't > keywords at the TableGen level, but rather at the level of the ISel > system implemented with TableGen. Copying existing patterns and reading > the

The macro $src, $dest used in Instruction::AsmString must be "declared" in Instruction::OperandList, right? $$ has special meaning? On 5/6/05, Chris Lattner <sabre at nondot.org> wrote: > On Fri, 6 May 2005, Tzu-Chien Chiu wrote: > > llvm/lib/Target/X86/X86InstrInfo.td: > > class X86Inst<bits<8> opcod, Format f, ImmType i, dag ops, string > >

Hi, We have some DSP architectures (kalimba) which have 24-bits as their "minimum addressable unit". So this means that the sizeof a char (and an int and a short for that matter) is 24-bits. I quickly read the posted link WritingAnLLVMBackend.html but did not see an obvious answer to the following question: Is it possible to write a backend that faithfully represents these

Hi folks, It took a while, but I finally have some bandwidth to look at this. I've been reading the two existing TableGen documents: http://llvm.org/docs/TableGenFundamentals.html http://llvm.org/docs/TableGen/LangRef.html the first is linked from the index, but LangRef is not (though it has some remains in the metadata). I'm wondering what's the relationship between them two. My