similar to: [LLVMdev] LLVM JIT--Function Specialization and Stack rewriting

On May 27, 2010, at 6:08 AM, Nicolas Capens wrote: > Hi all, > > I'm attempting to use LLVM for run-time code specialization, but I'm facing a performance hurdle. I'm currently performing the specialization during the AST to LLVM IR translation, but unfortunately this leads to relatively slow recompiles as LLVM has to perform all the heavy (optimization) passes over and

Hi Chris, Thanks for pointing me to that presentation! It helped me come up with a strategy that I believe might work: 1) Use CloneFunction() to make a copy of the original unspecialized (but optimized) function. 2) Specialize it using a custom function pass which identifies the specialization parameters and substitutes them with given run-time constants. 3) Run the function through a

I don't think there is any infrastructure for this kind of specialization. The closest thing I can think of is the profile-guided optimization stuff that Andreas Neufstifter has worked on. Because compilation and optimization with LLVM is expensive, our approach with Unladen Swallow has been to try to wait longer to generate specialized code, so we don't have to recompile. If memory

Hi all, I'm attempting to use LLVM for run-time code specialization, but I'm facing a performance hurdle. I'm currently performing the specialization during the AST to LLVM IR translation, but unfortunately this leads to relatively slow recompiles as LLVM has to perform all the heavy (optimization) passes over and over again. So I was hoping that by first creating unspecialized LLVM

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

Thanks, Anton. I always forget about llvm-admin :). I'd say converting all branches would be best, would help track the MCJIT work for example. Gaël, does that sound good to you? You're the one making all the commits these days :). ~Will On Sun, Jan 5, 2014 at 9:03 AM, Anton Korobeynikov <anton at korobeynikov.info> wrote: > Hello > > I can create a mirror, this is not

Valery Khamenya wrote: > are there any attempts to use LLVM in graph-rewriting (term-rewriting) > language implementations? Pure is a dynamically typed FPL based on term rewriting: http://pure-lang.googlecode.com/ It uses the LLVM JIT to compile and execute code on the fly in an interpreter-like environment, and can also batch-compile code to native executables. This includes the

Hi Nicolas, Reviving old thread of sorts... thank you very much for your earlier response--I apologize for not responding to tell you how very helpful your information was! Didn't come back because you gave me everything I needed at the time :). Anyway: On Fri, May 13, 2011 at 2:00 PM, nicolas geoffray <nicolas.geoffray at gmail.com> wrote: > On Fri, May 13, 2011 at 7:30 PM, Will

Hi all, Don't suppose VMKit could be added to the set of subprojects with official git mirrors? Please and thank you! :) ~Will

Hi, are there any attempts to use LLVM in graph-rewriting (term-rewriting) language implementations? How good is LLVM for this? E.g., is it natural to expect that the LLVM-based implementation of the language Concurrent Clean be any faster than its reference implementation? Best regards -- Valery A.Khamenya -------------- next part -------------- An HTML attachment was scrubbed... URL:

On Sun, Nov 6, 2011 at 12:24 AM, Ankita (Garg) Goel <gargankita at gmail.com> wrote: > Hi, > I am using the DSA analysis in llvm-3.0. I am interested in seeing the > resultant DSGraph for my sample input program. I tried the -dsa-only-print > parameter, but was not successful in getting the .dot file for the graph as > mentioned in Printer.cpp. The exact command that I tried

Hi all, I'm interested in using VMKit rather extensively in a project of mine. I was hoping to get feedback on a few vmkit-related questions from those more familiar: --Is there a 'best' version to use? I'd be inclined to use the 2.9 release since it's a stationary target, but curious if I should try to follow ToT.  Is there a recommended best practice? --What features of

Thanks for the response, Eli. The header suggestion could certainly cause this issue (I panicked for a second), but unfortunately as far as I can tell the headers are in fact from LLVM 2.7. The pass is built as a project configured by llvm, so hopefully that would make things right, but also: --include paths look legit (make VERBOSE=1, etc) --strace on the build process for the project confirms

Hmm, disregard my previous comment (while you might still have issues with 64bit, that's not what's primarily causing your issue)--your particular error is when you don't point vmkit to the classpath libraries properly. Set it with the configure option --with-gnu-classpath-glibj=/path/to/classpath-0.97.2/lib/glibj.zip Good luck! ~Will On Tue, Aug 23, 2011 at 5:49 PM, Will Dietz

Hi Will, On Fri, May 13, 2011 at 7:30 PM, Will Dietz <willdtz at gmail.com> wrote: > Hi all, > > I'm interested in using VMKit rather extensively in a project of mine. > > Great! > I was hoping to get feedback on a few vmkit-related questions from > those more familiar: > > --Is there a 'best' version to use? I'd be inclined to use the 2.9 >

For a machine like an FPGA with no stack, you have to ensure that you have an optimization that rewrites the alloca into either registers (such as PromoteMem2Reg) or that you rewrite the alloca by declaring a static local, and rewriting the code to use that instead of the alloca result. Mark Mendell From: llvm-dev <llvm-dev-bounces at lists.llvm.org> On Behalf Of Bruce Hoult via llvm-dev

Dear Will, If you're seeing the wrong method executed, it's probably because you're using multiple inheritance in your analysis group (which is a very common thing to do). LLVM 2.7 made a change which alleviated the need for RTTI or some other undesirable C++ feature. However, it also broke multiple inheritance with analysis group passes. To fix it, your analysis group needs to

Ah yes, thanks, this was one problem, now I hit another: llvm[2]: Building Release+Asserts mmtk-vmkit.jar all Thread 0x110000000 received a SIGSEGV: either the VM code or an external native method is bogus. Aborting... ; 0x5cfeed (0x1100fe410) in _Z14sigsegvHandleriP7siginfoPv ; 0x2b889c232c60 in Unknown method ; 0x561499 (0x1100fe900) in _ZN2j310JavaObject7acquireEPS0_ ; 0x55b464 (0x1100fe920)

Hi, I am using the DSA analysis in llvm-3.0. I am interested in seeing the resultant DSGraph for my sample input program. I tried the -dsa-only-print parameter, but was not successful in getting the .dot file for the graph as mentioned in Printer.cpp. The exact command that I tried is: #opt -load <path-to-llvmdatastructures.so> -dsa-local -dsa-bu -dsa-td -dsa-only-print < hello.bc Is

The topic of Ra and jit has come up on this list recently (see http://www.milbo.users.sonic.net/ra/index.html) so I thought people might be interested in this little demo. For it I used my machine, a 3-year old laptop with 2Gb memory running Windows XP, and the good old convolution example, the same one as used on the web page, (though the code on the web page has a slight glitch in it). This