similar to: [LLVMdev] Thoughts about ExecutionEngine/MCJIT interface

When using ORC JIT, I'm having trouble with external function resolution (that is, of a function defined in the app, with C linkage). I add a declaration for the function to my IR, and when I use MCJIT, it finds it and all is well, But when I use ORC JIT (I *think* correctly, at least it closely matches what I see in the tutorial), I get an LLVM error, "Program used external function

Thanks so much! This seems to do the trick. I would have spun my wheels for a long time before discovering all of this, wow. Do I even want to know what additional chickens need to be sacrificed to get this to work on Windows? -- lg > On May 18, 2016, at 1:52 PM, Lang Hames <lhames at gmail.com> wrote: > > Hi Larry, > > You're basically there, but you're hitting

Hi Larry, Thanks so much! This seems to do the trick. I would have spun my wheels for > a long time before discovering all of this, wow. No worries. :) I'll try to keep this in mind and make sure I address it in future Kaleidoscope tutorial chapters - these issues tripped me up the first time I encountered them too. Do I even want to know what additional chickens need to be sacrificed

>> llvm::sys::DynamicLibrary::LoadLibraryPermanently(nullptr) This is one is a bit tricky and hard to find. I spent quiet some time digging into MC and ORC JIT execution engines trying to find what makes them work. The problem is that this trick (LoadLibraryPermanently) happens inside of EngineBuilder, despite that the functionality belongs to a JIT engine itself, not to the builder. I

To try to find out why it was crashing, I followed the trail of function calls: C:\llvm\examples\Kaleidoscope\Orc\initial\toy.cpp auto ExprSymbol = J.findUnmangledSymbol("__anon_expr"); JITSymbol findUnmangledSymbol(const std::string Name) { return findSymbol(mangle(Name)); } JITSymbol findSymbol(const std::string &Name) { return CompileLayer.findSymbol(Name,

Hi everyone, In llvm 4.0 the MCJIT::getFunctionAddress function return 0 (a null address) when the symbol is not found : *uint64_t MCJIT::getSymbolAddress(const std::string &Name, bool CheckFunctionsOnly) { std::string MangledName; { raw_string_ostream MangledNameStream(MangledName); Mangler::getNameWithPrefix(MangledNameStream, Name, getDataLayout()); } return

Hi all, hi Lang It's a little late to report issues for release_50, but I just found that thing while porting my JitFromScratch examples to 5.0. This is a really nifty detail, but (if I'm not mistaken) the function signature of RTDyldObjectLinkingLayer::NotifyLoadedFtor is incorrect: $ grep -h -r -A 1 "using NotifyLoadedFtor"

Another question: Lang, when do you think it'll be ok to move it to the C Bindings? On Fri, Mar 13, 2015 at 6:39 PM, Lang Hames <lhames at gmail.com> wrote: > Hi Pawel, > > I agree. ExecutionEngine, in its current form, is unhelpful. I'd be in > favor of cutting the common interface back to something like: > > class ExecutionEngine { > public: > virtual

I didn't seen any roadmap and plan about OrcJit & MCJIT. And would OrcJIT be stablize in version 7.0? Or latter version? Would MCJIT be removed in source tree, when? -- 此致 礼 罗勇刚 Yours sincerely, Yonggang Luo -------------- next part -------------- An HTML attachment was scrubbed... URL:

I tree to compile the LLVM ORC JIT examples. But I'm stuck in some problems I can't solve my own. First at all I compile with C++14 enabled with latest stable LLVM and clang, this means 4.0.1. I get the following error. Do I missed some specific compile option? Compilation looks like this here. |CompilingcontribJIT.cpp PWD:/home/ikuehl/projects-llvm/TurboLisp/domainEngineer

Firstly, apologies if this is not the right place to be asking this question--feel free to point me in the correct direction. I could be doing something wrong here but stackoverflow didn't feel like the correct place for this since there's so little there about LLVM ORC. Basically, I have a reproduction case (below) where if I throw an exception before I call JITSymbol::getAddress()

Hello everyone, I need some advises about (re)using ExecutionEngine with MCJIT as a driver. I'm developing a service that receives a piece of high-level code, compiles it into LLVM IR function "main" and uses MCJIT to execute the function. It can happen that the same piece of code is sent to the service many times. I would like to cache the results (keep generated machine code

Hi David, This looks like bad eh-frame data due to a failure to fix up the frame descriptor entries: <debug: adding frame> EHFrameAddr: 0x7feae5827000, EHFrameLoadAddr: 0x00000000e5827000, EHFrameSize: 60 ==64588==ERROR: AddressSanitizer: SEGV on unknown address 0x7feae5827020 (pc 0x7feae886d970 bp 0x000000000001 sp 0x7ffca10e75f8 T0) Eyeballing the code in RuntimeDyldELF (vs

Hi David, Thanks very much for that. I'll continue to dig in as time permits, and I'll update the bug report with my progress once it's filed. Cheers, Lang. On Mon, Apr 17, 2017 at 6:42 PM, David Lurton <dlurton at gmail.com> wrote: > Thanks Lang. I think I'll go the bug creation route. I have an email out > to llvm-admin requesting an account on bugs.llvm.org.

Hi Lang, Thanks for the reply. Responses below. As far as I know nobody is actively working on MCJIT any more. I've been > working on the next generation of LLVM JIT APIs (ORC - see > include/llvm/ExecutionEngine/Orc) for a while now, but they don't have > functionality for running arbitrary functions yet. > Thanks for the pointer to ORC -- it looks like the runFunction

When OrcMCJITReplacement is given a new module, it asks for the module's constructors, gives them names like $static_ctor.0, $static_ctor.1, etc., and saves the mangled names in a map. Later, to execute them, it uses runViaLayer(), which looks for those symbol names in the given JIT layer. Could one not simply execute the constructors straight away, rather than naming them and looking them up

Many thanks for the sample code, Alex. In the end I did it the same way OrcMCJITReplacement does it. Constructors and destructors are called and, thanks to LocalCXXRuntimeOverrides, the program does not crash on exit! But it does seem like there should be a simpler way; the learning curve is steep... Geoff On Thu, 21 Jun 2018 at 12:28, Alex Denisov <1101.debian at gmail.com> wrote: >

Thanks! Currently using MCJIT. But migration to ORC is on my TODO list. - Paweł On Thu, May 12, 2016 at 8:30 PM Lang Hames <lhames at gmail.com> wrote: > Hi Pawel, > > Option (1) and (3) are very similar, but using custom resolution (option > 3) guarantees that JIT'd code can't accidentally end up depending on > functions in your JIT that you didn't mean to

On Alex's advice I am switching from MCJIT to the Orc API to compile and execute functions. Starting from the new clang-interpreter example in the source code (top of the tree!), I am able to execute my functions all right... as long as there are no constructors and destructors to call. My question: is there a simple way, with the Orc API, to run a module's constructors and destructors? I

Hi I’ve previously used the ExecutionEngine::addGlobalMapping to make existing functions available to my JITed code. I’m currently using ORC, as MCJIT does not appear to be maintained any longer (the kaleidoscope examples have not worked for some time with MCJIT). I’m using just the basic ORC CompileLayer directly. So, I’ve essentially copied the ExecutionEngine::addGlobalMapping related