similar to: Using bytecode version of std::sort for JIT generated data type

Thanks David! I understand that std::sort doesn't exist without types especially at bytecode layer. What I was thinking was something like the following: Compile std::sort with a thunk function Compare(void*, void*) {rerturn false} into bytecode with an option say noinline and always make the function call or even a simple unoptimized bytecode which guarantees that Compare exists as a

Thanks David! I am not clear on how to achieve this though. Could you give more info on this? I expect something like this: sort.cc file: bool Compare(void* a, void* b) { return false; } void SortFunc(void* arr, int len) { std::sort(arr, len, &Compare) } $MAGIC_COMMAND sort.cc -o a.llvm a.llvm is a bytecode which can be loaded at runtime in my JIT module and write some code to

On Mon, Jul 8, 2019 at 4:39 PM David Blaikie <dblaikie at gmail.com> wrote: > There isn't any magic command for this - you'd have to write some C++ > code/a custom LLVM optimization pass. > > Though, that said - perhaps it should just be a runtime parameter where > you rely on LLVM to inline/optimize things away? You could do some > relatively smaller code

Do you have some pointers on how to do it? Take a file like sort.cc above and generate a JIT module. Does llc <https://llvm.org/docs/CommandGuide/llc.html> help with this? What library function can we use to load an existing IR module file into my JIT runtime module to compile them together? On Tue, Jul 9, 2019 at 4:17 PM David Blaikie <dblaikie at gmail.com> wrote: > Ah, no, sort

Hi all, I am using LLVM for JIT use-case and compile functions on the fly. I want to "free" the modules after some time and reclaim any memory associated with it. I am using the SimpleORC API <https://llvm.org/docs/tutorial/BuildingAJIT1.html> now. Is there an API to "free" all the memory associated with the module? I use one "compiler" instance (think similar

Hello, can anyone help me calling native functions from LLVM-Bytecode functions run in the JIT? I have a program which creates an LLVM execution engine and adds modules and functions to it on the fly. I need to call some native functions of my program from bytecode functions which causes some troubles as it appears not to be documented. My test scenario works like the following: I have

On Mon, 11 Jun 2007, Jonas Maebe wrote: > On 11 Jun 2007, at 22:35, Jan Rehders wrote: >> It's inside PPCJITInfo::relocate but unfortunately I could not figure >> out anything from the source. It looks like it's calculating new >> addresses for functions which does not make much sense for a native >> function, at all > > On the PPC, unconditional branches

Hi Alexey, Thank you very much for your detailed reply, will look into the resources indicated. I'd like to avoid C++ if possible, let me see how it goes. Regards, Rajesh Jayaprakash On Tue 12 Mar, 2019, 6:35 PM Sachkov, Alexey, <alexey.sachkov at intel.com> wrote: > Hi Rajesh, > > If I understand correctly, libclang is a C interface to Clang features, > not LLVM. That

Dear llvm-dev list, Apologies if this list is not the right venue for this query - suitable redirection would be appreciated in that case. I have a JIT use case that I'd like to know the best way to implement using LLVM. I am looking to migrate from the existing native compilation option (Tiny C Compiler - TCC) for pLisp, a Lisp dialect and IDE. At present, the native compilation is done

Hi, > Jan, how are you doing this? Are you creating an external LLVM > Function > object named "get5", then using EE::addGlobalMapping? If 'get5' > exists in > the address space, why not just let the JIT resolve it (which will > then > create the stub)? Yes. I create a Function with matching signature, calling conventions and external linkage

Greetings, I am searching for an alternative to sun's java implementation - one that is not under gpl.. I've been reading the vmkit code for JNI.. And I notice that it is not completely filled out yet... That's fine though, I see there is filled in function like most of the non implemented functions.. Couple of questions: Is the entire llvm required for java/cli vmkit to run?

On 11 Jun 2007, at 22:35, Jan Rehders wrote: > It's inside PPCJITInfo::relocate but unfortunately I could not figure > out anything from the source. It looks like it's calculating new > addresses for functions which does not make much sense for a native > function, at all On the PPC, unconditional branches are limited to 24 bit signed displacements. When you call a function

Hello , I am compiling SPEC 2000 benchmarks with llvm .Got stuck with calculating "execution time" of all the .bc and native files. The log for nightly test itself gives execution times but I am passing the bytecode files to my pass which gives another bytecode file.I have to calculate execution time of such bytecode and native files as well.If i simply do this: time lli

Hi, > I know nothing about this, but the failed assertion suggests the PPC > code generator can't cope with a constant that's bigger than > expected at > that point. Have you taken a look at PPCJITInfo.cpp:382? It may shed > some light. It's inside PPCJITInfo::relocate but unfortunately I could not figure out anything from the source. It looks like it's

Hi, > Okay. If the function exists in your application's address space > already, > just name the LLVM function the same name as the native function > and the > JIT should find it an do the right thing. This is how it finds > printf and > a variety of other things. You don't need to call addGlobalMapping at > all. Looking at the output of "nm

On Tue, 12 Jun 2007, Jan Rehders wrote: >> Jan, how are you doing this? Are you creating an external LLVM >> Function object named "get5", then using EE::addGlobalMapping? If >> 'get5' exists in the address space, why not just let the JIT resolve it >> (which will then create the stub)? > > Yes. I create a Function with matching signature,

On Thu, 30 Jun 2005, Tanu Sharma wrote: > I am compiling SPEC 2000 benchmarks with llvm .Got stuck with > calculating "execution time" of all the .bc and native files. > > The log for nightly test itself gives execution times but I am passing > the bytecode files to my pass which gives another bytecode file.I have > to calculate execution time of such bytecode and

hi centos 6 64 bit hex core processor with hyperthreading ie display shows 12 cores 16 gb ram 600 gb 15000 rpm drive we are having around 4000 users on a server i wish to allow 1500 pop3 and 1500 imap connections simultaneously. need help regarding the settings to handle the above imap-login, pop3-login imap pop3 service settings i recently i got an error imap-login: Error: read(imap)

Hi, I wanted to use VMKit project to convert Java Bytecode to LLVM IR bitcode. But I do not know how to start, since I came to know that VMkit is written for llvm -3.3 version, but I want it for latest LLVM version 6.0.1. So, could you please suggest me, whether I have to write it whole project from scratch to meet my requirement of latest llvm version, or can use existing project by building

Hi all. I'm writing a remote 2D graphics API for embedded devices. It includes a little GLSL 1.0-esque shader language, which is compiled to executable SSE code at runtime. Is LLVM a good fit for this sort of thing? At the moment I'm compiling NASM into my code, but it doesn't do any register allocation (which is why I'm considering LLVM). I don't want to add too much bloat