similar to: [LLVMdev] JITted code in multiple threads

Hi all. I'm working on the recently-announced unladen-swallow project, and I'm having a bit of trouble getting gdb to step into functions I've compiled with LLVM's JIT compiler. The attached a_module.ll is the module I produce from compiling def foo(r): for i in r: pass I'm JIT-compiling and running foo() with: typedef PyObject *(*NativeFunction)(PyFrameObject *);

Run with -debug-only=jit. Break on line 1148 of JITEmitter.cpp. The debugging message will tell you the address and size of the function that was jitted. You can then tell gdb to disassemble the code. On Mar 26, 2009, at 11:35 PM, Jeffrey Yasskin wrote: > Hi all. I'm working on the recently-announced unladen-swallow project, > and I'm having a bit of trouble getting gdb to

On 2009-11-01 08:40, Jeffrey Yasskin wrote: > 2009/10/30 Török Edwin <edwintorok at gmail.com>: > >> On 2009-10-29 23:55, Jeffrey Yasskin wrote: >> >>> On Thu, Oct 29, 2009 at 2:30 PM, Nicolas Geoffray >>> <nicolas.geoffray at lip6.fr> wrote: >>> >>> >>>> Hi Jeffrey, >>>> >>>>

2009/10/30 Török Edwin <edwintorok at gmail.com>: > On 2009-10-29 23:55, Jeffrey Yasskin wrote: >> On Thu, Oct 29, 2009 at 2:30 PM, Nicolas Geoffray >> <nicolas.geoffray at lip6.fr> wrote: >> >>> Hi Jeffrey, >>> >>> Jeffrey Yasskin wrote: >>> >>>> Cool, I'll start implementing it. >>>> >>>>

On 2009-10-29 23:55, Jeffrey Yasskin wrote: > On Thu, Oct 29, 2009 at 2:30 PM, Nicolas Geoffray > <nicolas.geoffray at lip6.fr> wrote: > >> Hi Jeffrey, >> >> Jeffrey Yasskin wrote: >> >>> Cool, I'll start implementing it. >>> >>> >> Great! Thanks. >> >> Just to clarify things: on my end, it

Here's my problem, which I raised on IRC: JIT::getPointerToFunction gets the address of the start of a function. But how do I find out where the end of the function is? I need this to register the function for profiling. varth said: aph, you need to intercept the "endFunctionBody" call on the memory manager, it will tell you the start pointer and the end pointer But how can I do

Hi Andrew, Andrew Haley wrote: > Here's my problem, which I raised on IRC: > > JIT::getPointerToFunction gets the address of the start of a function. > But how do I find out where the end of the function is? I need this > to register the function for profiling. > > varth said: aph, you need to intercept the "endFunctionBody" call on > the memory manager, it

On Thu, Oct 29, 2009 at 2:30 PM, Nicolas Geoffray <nicolas.geoffray at lip6.fr> wrote: > Hi Jeffrey, > > Jeffrey Yasskin wrote: >> >> Cool, I'll start implementing it. >> > > Great! Thanks. > > Just to clarify things: on my end, it doesn't really matter what is the > default behavior, as long as vmkit can continue to have the existing >

Hello all, I'm trying to bring an LLVM-based project that is working on Linux up on Win32. I am having problems with llvm::ExecutionEngine::create returning a NULL. I traced it to these lines: // Unless the interpreter was explicitly selected, try making a JIT. if (!ForceInterpreter && JITCtor) EE = JITCtor(MP, ErrorStr); // If we can't make a JIT, make an

Hi Jeffrey, Jeffrey Yasskin wrote: > Cool, I'll start implementing it. > Great! Thanks. Just to clarify things: on my end, it doesn't really matter what is the default behavior, as long as vmkit can continue to have the existing behavior of lazy compilation. With Chris' solution, I was wondering how you would implement the getPointerToFunction{Eager, Lazy} functions when

Hi, I was just reading through the Kaleidoscope tutorial (which is greatly written and understandable, thanks! ) hoping to get some glimpse about the workings of the JIT and the optimizations that are done at run time. I am curious as to how LLVM's JIT dynamically generates native code from bit code at run time and runs that code (I think my question is also somewhat more general in the sense

hi all, I've written a small language implementation that JIT-compiles code prior to execution. At the moment, i execute the function through ExecutionEngine::runFunction. However, this requires me to keep all of the code generation artifacts (instructions, constants, etc) around during execution. Given that execution compiles the program down to machine code, is there a reasonably

Er... Sending this to the list instead of the parent... On Thu, Nov 19, 2009 at 4:49 AM, Hans Wennborg <hans at hanshq.net> wrote: > Yesterday I realised that if a Function has the calling convention set > to "fast", then it is a bad idea to call it through the function pointer > one gets from ExecutionEngine::getPointerToFunction(). > > The problem is that when

I have a function in llvm ir as follows: def [2 x [3 x double]] @fun() { return [ ... ]; // a [2 x [3 x double]] constant } I would like to JIT this function in C. I first get the void pointer using: void *FPtr = TheExecutionEngine->getPointerToFunction( func ); Then I need to conver this void pointer to the corresponding C function pointer type, and then call the function

"Aaron Dwyer" <llvmification at gmail.com> writes: [snip] > JITCtor and InterpCtor are both NULL, so it's obvious why I'm getting > back a NULL execution engine. I am pretty sure it's because I'm > missing a few llvm .lib or .obj files. What is the set of llvm object > files needed at link time for Win32 on X86 JIT? This is what I use on MinGW. It

On 11/24/2011 05:52 PM, Óscar Fuentes wrote: > Óscar Fuentes<ofv at wanadoo.es> writes: > >>>> If I activate the Inliner pass: >>>> >>>> Builder.Inliner = createFunctionInliningPass(Threshold); >>>> >>>> this is the result: >>>> >>>> LLVM ERROR: Program used external function

Hi, I'm trying to speed up the JIT time with llvm (3.9.1). So far i've implemented the object cache, used FastISel and disabled optimizations. Jit time is still too slow for my purpose (I do have a lot of code to Jit). http://llvm.org/docs/ProgrammersManual.html#threads-and-the-jit states that we can invoke ExecutionEngine::getPointerToFunction() concurrently. This function was replaced

If you know the prototype of f, you can just use getPointerToFunction and cast the result: // Let F be an llvm::Function* referring to 'f'. void (*f)(int*) = (void (*)(int*))JIT->getPointerToFunction(F); int a; f(&a); // read a I haven't compiled this, it's a guess at the usage from memory. Reid On Fri, Feb 11, 2011 at 12:55 PM, Vu Le <vmle at ucdavis.edu> wrote:

Hi Gabi, I have no idea why your performances is not as expected with such low level of informations. But, I know that the binary code is cached by the JIT. You can find the code in JIT.cpp to convince yourself : runFunction -> getPointerToFunction ->getPointerToGlobalIfAvailable which returns the native address of the jitted function. You can even try to measure time needed by each

Hi, As some of you may remember, I'm implementing an LLVM-based model checker. I'm doing something a little odd, in that mostly I'm using the interpreter (currently a hacked version of lli with threads) for most things because I need to hook into lots of stuff that would be difficult to manage otherwise, but I'm also using the jitter for some things that need to be fast