similar to: [LLVMdev] Path Profiling in LLVM

Adam, Path profiling would be a useful addition to LLVM but that by itself is not enough to include it in mainline LLVM. There has to be someone willing to maintain it as well, including bug fixes and code updates as LLVM APIs change. Is that something you are willing to do? --Vikram Associate Professor, Computer Science University of Illinois at Urbana-Champaign http://llvm.org/~vadve

Hi All, I use llvm version 2.9. llvm-prof does not support to read path profiling info. So could I use any way else to read path profiling info? Thanks Linh ________________________________ From: Andreas Neustifter <andreas.neustifter at gmail.com> To: Andrew Trick <atrick at apple.com> Cc: Linh Ho Tran <hotranlinh at yahoo.com>; "llvmdev at cs.uiuc.edu Mailing

Hi members, I am a LLVM newbee. I am working in path profiling. I got an error message when reading the path profile data I made a sample source named foo.c The command chain to make llvm path profiling as follows: 1. Compile to LLVM Bitcode llvm-gcc –emit-llvm foo.c –c –o foo.bc 2. Insert Path Instruments opt –insert-path-profiling foo.bc –o foo_path.bc 3. Link with profile

I am a student at the University of Alberta under the supervision of José Nelson Amaral, and I have been working on implementing path profiling into LLVM. I have completed my project and would like to submit it. We are looking for a reviewer for the path profiling implementation. We have sent previous requests to the llvmdev list but have so far been unsuccessful. Please see the attached

Summary: We need to find a reviewer for our implementation of Ball-Laurus path profiling. It is well known that path profiling generates more precise information about a program's behaviour than edge profiling. We are conducting a research project with the goal of developing a methodology to make feedback-directed optimization (FDO) more sound. We are developing combined profiles that enable

Dear Members, I am working on path profiling, but command llvm-prof cannot read path profile info. Making llvm-prof to be able to read PP info is so wonderful. But I cannot find the format of PP. Could anyone give me the document of path profile info format so that I could modify llvm-prof. Thank you in advance Linh Ho -------------- next part -------------- An HTML attachment was

Hi, Here is a link to my document on PP. On page 4, it has the format of the path profile. http://lists.cs.uiuc.edu/pipermail/llvmdev/attachments/20100823/db8abfb3/attachment-0001.pdf Cheers, Adam On 2011-05-22, at 9:31 PM, Linh Ho Tran wrote: > Dear Members, > > I am working on path profiling, but command llvm-prof cannot read path profile info. Making llvm-prof to be able to

Thank you for your suggestions on the patch. If the patch is committed, I would be willing to maintain it, though I am not sure what is all involved or how I am made aware of changes that need to be made. The technical report https://www.cs.ualberta.ca/system/files/tech_report/2010/PreussPathProfLLVM.pdf contains my benchmarks relating to profiling overhead in LLVM. Over the next week I will

On Dec 3, 2010, at 11:21 AM, Adam Preuss wrote: > I am a student at the University of Alberta under the > supervision of José Nelson Amaral, and I have been working on > implementing path profiling into LLVM. I have completed my project > and would like to submit it. > > We are looking for a reviewer for the path profiling implementation. We > have sent previous requests

On Fri, Dec 24, 2010 at 5:06 PM, Andrew Trick <atrick at apple.com> wrote: > On Dec 21, 2010, at 7:57 AM, Bob Wilson wrote: > > >> To get some idea about the number of people who could be involved in a > >> project like this, I would like to ask for a quick show of hands: Who > would > >> be interested in contributing code to LLVM-with-profiling? (Either

On Dec 21, 2010, at 7:57 AM, Bob Wilson wrote: >> To get some idea about the number of people who could be involved in a >> project like this, I would like to ask for a quick show of hands: Who would >> be interested in contributing code to LLVM-with-profiling? (Either actual >> profiling code, or passes that use profiling information.) >> Who would want to use the

What version of LLVM are you using? The profiling framework is completely messed up in the newer versions of LLVM.. I used to work with profiling in 2.5 some time ago, and it seemed to work fine.. If you really need this to work quickly, you might want to just get the old version and get on with it.. The newer versions of LLVM need to get the profiling part fixed soon..It is messing up my work as

On Dec 3, 2010, at 11:21 AM, Adam Preuss wrote: > I am a student at the University of Alberta under the > supervision of José Nelson Amaral, and I have been working on > implementing path profiling into LLVM. I have completed my project > and would like to submit it. > > We are looking for a reviewer for the path profiling implementation. We > have sent previous requests

Dear LLVM developers: I am a summer research student at the University of Alberta and I am working on implementing path profiling into LLVM. My work is almost complete; I am currently conducting tests to ensure that the path profiler functions correctly. To provide evidence that the profiler produces accurate results, I have developed a verifier which derives edge profile files (identical to

Dear all, I have already checked some related posted messages, such as: http://lists.cs.uiuc.edu/pipermail/llvmdev/2008-January/012315.html and http://lists.cs.uiuc.edu/pipermail/llvmdev/2008-February/012466.html After getting rid of some error messages, I was able to run the following commands: 1) opt -insert-path-profiling matmul.bc -o matmul.pp.bc 2) lli -load

On Friday 10 July 2009 18:06, Slobodan Pejic wrote: > Hello, > > I am planning on contributing path profiling to LLVM by the end of > August. I have written a document of what the interface to the path > profiles would look like at that time. If someone has any amendments, I > can incorporate them. > > http://www.cs.ualberta.ca/~pejic/PathProfiling.html Slobodan, This

Hello, I am planning on contributing path profiling to LLVM by the end of August. I have written a document of what the interface to the path profiles would look like at that time. If someone has any amendments, I can incorporate them. http://www.cs.ualberta.ca/~pejic/PathProfiling.html Slobodan Pejic

David Greene wrote: > On Friday 10 July 2009 18:06, Slobodan Pejic wrote: >> Hello, >> >> I am planning on contributing path profiling to LLVM by the end of >> August. I have written a document of what the interface to the path >> profiles would look like at that time. If someone has any amendments, I >> can incorporate them. >> >>

This proposal adds support for path profiling [Ball96] to LLVM. Path profiling compactly represents acyclic paths in a directed acyclic graph representation of the control flow graph of a routine. Instrumentation can be added to uniquely identify paths executed at runtime. Path profiles enable precise enumeration of the sequence of basic blocks executed in order for a particular path. Using path

Hi guys, I am trying to perform edge profiling using on hello.bc file by using following command opt -insert-edge-profiling hello.bc -o hello-edge.bc but I get the error that option "-insert-edge-profiling" is unknown. Can you please help me to solve the issue. Please note that I am following the paper available at this link http://llvm.org/pubs/2010-12-Preuss-PathProfiling.pdf