similar to: [LLVMdev] llvm jit

So, what is the use of the profile passes in LLVM? Also, does llvm detect hot blocks of code for recompilation? On Mon, Oct 7, 2013 at 4:44 PM, Amara Emerson <amara.emerson at arm.com> wrote: > No, the JIT does not do any profile guided optimizations for any > architecture. It just uses the static compilation components before loading > the object into memory and running its own

On 4/14/13 3:35 PM, Justin Holewinski wrote: > In the past, I've just referenced Chris's CGO 2004 paper when > referring to LLVM: I second that. We at Illinois typically cite Chris's CGO paper. The bibtex is: @InProceedings{LLVM:CGO04, Author = {Chris Lattner and Vikram Adve}, Title = {{LLVM}: A Compilation Framework for Lifelong Program Analysis and

In the past, I've just referenced Chris's CGO 2004 paper when referring to LLVM: C. Lattner and V. Adve. LLVM: A compilation framework for lifelong program analysis & transformation. For sub-projects like Clang and DragonEgg, I just cite the URLs: [4] Clang. clang.llvm.org. [5] DragonEgg. dragonegg.llvm.org. I don't know of any canonical references for these. On Sun, Apr 14,

Actually what I meant in my original loop, that there is a dependency between every two consecutive iterations. So, how the loop vectorizer says 'we can vectorize this loop'? for(int k=20;k<50;k++) dataY[k] = dataY[k-1]; From: Henrique Santos [mailto:henrique.nazare.santos at gmail.com] Sent: Sunday, November 03, 2013 4:28 PM To: Sara Elshobaky Cc: <llvmdev at

Hi Sarah, the loop vectorizer runs not on the C code but on LLVM IR this c code was lowered to. Before the loop vectorizer runs many other optimization change the shape of this IR. You can see in the LLVM IR you referenced below, a preceding LLVM IR transformation has change your loop from: > for(int k=20;k<50;k++) > dataY[k] = dataY[k-1]; to > int a = d[19]; >

Notice that the code you provided, for globals and stack allocations, at least, is semantically equivalent to: int a = d[19]; for(int k = 20; k < 50; k++) dataY[k] = a; Like so, the load you see missing was redundant, probably hoisted by GVN/PRE and replaced with "%.pre". H. On Sun, Nov 3, 2013 at 11:26 AM, Sara Elshobaky <sara.elshobaky at gmail.com>wrote: >

Hello, I was trying to trace the Loop vectorizer of the LLVM, I wrote a simple loop with a clear dependency. But found that the debug shows that 'we can vectorize this loop' Here you are my loop with dependency: for(int k=20;k<50;k++) dataY[k] = dataY[k-1]; And the debug prints: LV: Checking a loop in "main" LV: Found a loop: for.body4 LV: Found an

Hello, I'm using MCJIT to run some loops on my ARM processor. I was trying to perform some runtime optimizations on some function, and this requires recompiling the function at runtime. I know that this feature is not available yet in MCJIT , and to modify a function I have to create a new module with the newly optimized code. My questions are: - The newly created module can be

Hello, Please, I need more information on the runtime optimizer used in the LLVM JIT. - Where can I find it in the LLVM source code? - Are those runtime optimizations done on the LLVM representation code or on the machine code? Sara -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello, I'm executing my byte code program by the lli tool using mcjit. I need a way to find statistics about the number of instructions executed for my program. The -stats option does not include this value, are there any other way to know? I need this information to compare different versions of my bytecode program. Please advice Thanks in advance Sara Elsohbaky --------------

Hello, I have the following simple C code below. It should return '8' as a result. But the returned result is false as it returns '1'. When I remove the line of '__attribute__((noinline))' , the returned results are correct '8'. Any idea? Please advice as I need to get the assembly code of the 'getTexSize' function alone. Note: I compile using the

Hello, Can LLVM execute OpenGL ES 2.0 programs safely? As I tried a simple code, and I get some crashes while using lli example LLVM ERROR: Program used external function '__dso_handle' which could not be resolved! Thanks in advance Sara Une messagerie gratuite, garantie à vie et des services en plus, ça vous tente ? Je crée ma boîte mail www.laposte.net -------------- next part

Mingxing, Your project sounds interesting and if it significantly improves over the live variable analysis that is in LLVM right now, I think it could be a useful contribution. I'm copying the 'llvmdev at cs.uiuc.edu' mailing list, which you should join. Send all related messages to this list to get feedback on your goals and also to get help with any problems you face.

Dear LLVM devs, If one were to (academically) cite the LLVM project in the general sense, what would be the recommended reference - ie. one that gives a recent and complete overview of the system? Thanks! Vesa

I"m not sure there is an official citation, but you can probably just look at the papers on <http://llvm.org/pubs/> and see what they do. -- Sean Silva -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20130414/df90a7d0/attachment.html>

FYI, The LLVM Performance Workshop will be held at CGO 2017. The workshop is co-located with CC, HPCA, and PPoPP. If you are interested in attending the workshop, please register at the CGO website: http://cgo.org/cgo2017/workshops.html When: Saturday February 4th, 2017 Where: Austin, Texas, USA ---- Hi, CGO workshop and tutorial organizers, This is a friendly reminder that early

An LLVM Performance Workshop will be held at CGO 2017. The workshop is co-located with CC, HPCA, and PPoPP. If you are interested in attending the workshop, please register at the CGO website: http://cgo.org/cgo2017/workshops.html Call for Speakers We invite speakers from academia and industry to present their work on the following list of topics (including and not limited to:) - improving

Dear all, I have one Model (M3) fitted using the lme package, and I have checked the correlation structure of within-group errors using plot(ACF (M3,maxLag=10),alpha=0.05) But now I am not sure how to interpret this plot for the empirical autocorrelation function. The problem is that I am used to see/interpret diagrams in which all the autocorrelation Lags, except lag-1, are inside the

Buenas tardes, Solicito por favor ayuda con este error: Error: OutOfMemoryError (Java): Java heap space Estoy trabajando con matrices de grandes dimensiones y el programa no logra completarse porque dice le falta memoria. Gracias [unnamed] Sara Suarez Zapata Estudiante en práctica - Unidad Gestion Bolsa de Energia. Tel: (574) 380 61 18 Correo: sara.suarez en

Hi Terry, I'm not part of that project but I'll take a stab at answering your question. Vikram Adve is probably the person to answer. The point of Lifelong Code Optimization is to continuously optimize the code during its lifetime, even while it is running. By profiling the code, it is possible to discover the program's hot spots and intensely optimize those portions of the program.