similar to: MCJIT, can't use with math functions

Hi, I still can't get IR functions to JIT compile with the ORC JIT when they contain a call to the standard math library. Attached is a minimal exploit. The program uses the KaleidoscopeJIT.h that ships with LLVM 8 (except that I had to expose the Datalayout). It reads from the filesystem an IR file (filename "func_works.ll" or "func_cos_fails.ll) and asks the ORC JIT

I am upgrading our JIT application to use LLVM 6.0.0, and with this transition I am making the move to use the new MCJIT facility. A problem I am encountering is that the math functions from libm are not resolved/found. I am using the lambda resolver from the KaleidoscopeJIT class which first searches the present modules and, if that is unsuccessful, continues the search in the whole process

Hi Alex, loading the symbols explicitly helped. With this the build process doesn't need any additional linker flags. Very nice. Thanks, Frank On 06/28/2018 04:38 PM, Alex Denisov wrote: > Hi Frank, > > If I am not mistaken it doesn't look in the whole process space by default. > Please, try loading all the symbols explicitly: > >

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

Hi, I wrote a compiler that generate IR code and run it on the JIT, and there randomly crashed due to "corrupted size vs. prev_size" depends on the IR code generated from the source code. Here's how I created the JIT: llvm::InitializeNativeTarget(); llvm::InitializeNativeTargetAsmPrinter(); llvm::InitializeNativeTargetAsmParser(); // create jit llvm::orc::ExecutionSession

Hi all, I am new to LLVM and have been working through the Kaleidoscope tutorial. Everything is working fine so far except for local externs (as opposed to things like the math functions, which are working). Note that I have seen this bug with the reference code listing, as well as my own code. link to code: https://llvm.org/docs/tutorial/LangImpl05.html#full-code-listing [c34n10 kaleidoscope]

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()

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 David, Sorry to hear. Has anyone followed up with you yet? I've continued to dig in to this in my spare time and I've found the issue. It's a use-after-free, rather than any sort of memory smashing. ORC is currently failing to deregister the EH-frame section when the JIT is torn down (but *is* deallocating the memory for it). Normally that's not disastrous (though it does

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 Bjoern, CCing cfg-dev (since that's where the conversation started) and llvm-dev (since it's relevant there). Do you know if there is a way to obtain the fully resolved obj-code? I > wanted to load the functions into a shared memory, but how? The only thing > I receive is a function pointer, but I don't know how large the function > 'behind' is. Even a call to

Hi, I think ExecutionEngine as a common interface for both Interpreter and MCJIT is almost useless in the current form. There are separated methods in ExecutionEngine for similar or the same features provided by Interpreter and MCJIT, i.e. to get a pointer to function you should call getPointerToFunction() for Interpreter or getFunctionAddress() for MCJIT. Personally, I'm using MCJIT and

Hi Dibyendu, I had a look - to be honest I am not sure where the error is being > reported from. It looks like this: > JIT session error: Symbols not found: [ luaV_tointeger_, luaG_runerror ] > I don't think it is from any logging I am doing. Errors in ORC may trigger cascading failures. E.g. if two different modules M1 and M2 both reference a function "foo" which cannot

Hi Lang, On Mon, 13 Apr 2020 at 19:12, Lang Hames <lhames at gmail.com> wrote: > >> I updated my project to LLVM 10.0 today and I am getting JIT symbol resolution errors. >> I could not find any example or updated tutorial or documentation that describes the new api - as all documentation seems out of date. > > > The doxygen comments should be up-to-date, as should

Hi, I updated my project to LLVM 10.0 today and I am getting JIT symbol resolution errors. I could not find any example or updated tutorial or documentation that describes the new api - as all documentation seems out of date. I paste below some code snippets that show what I am doing: /* global syms is a array mapping names to function addresses */

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

Hi Sean, This is great, but it couples LogicalDylib too tightly to CompileOnDemandLayer. Does this alternative implementation of getLogicalModuleResourcesForSymbol work for you (unfortunately I don't have a local test case for this yet): LogicalModuleResources* getLogicalModuleResourcesForSymbol(const std::string &Name, bool

I needed to be able to update stub pointers for hot functions that get recompiled in a lazy JIT that uses CompileOnDemandLayer. In order to do this I added a method that allows pointers to be updated but does not expose any of the other internals of the COD layer. Does anyone have a cleaner way to do this? Has something to facilitate this already been added? Would it be possible to merge this

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