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...ying to use gold plugin to compile and run some of my passes on some large softwares like mysql, apache etc. When I compile using llvm-gcc, everything works fine. But, when I followed the instructions on http://llvm.org/docs/GoldPlugin.html#build to use gold plugin, I got errors like: /home/vadve/ssahoo2/local/bin/ld: error: modules/standard/libstandard.a: no archive symbol table (run ranlib) /home/vadve/ssahoo2/local/bin/ld: error: modules/extra/libextra.a: no archive symbol table (run ranlib) /home/vadve/ssahoo2/local/bin/ld: error: main/libmain.a: no archive symbol table (run ranlib) .... I tri...

...use gold plugin to compile and run some of my passes on some large softwares like mysql, apache etc. When I compile using llvm-gcc, everything works fine. But, when I followed the instructions on http://llvm.org/docs/GoldPlugin.html#build to use gold plugin, I got errors like: > > /home/vadve/ssahoo2/local/bin/ld: error: modules/standard/libstandard.a: no archive symbol table (run ranlib) > /home/vadve/ssahoo2/local/bin/ld: error: modules/extra/libextra.a: no archive symbol table (run ranlib) > /home/vadve/ssahoo2/local/bin/ld: error: main/libmain.a: no archive symbol table (run ranlib) &...

---- Original message ---- >Date: Wed, 10 Mar 2010 22:09:22 -0800 >From: Nick Lewycky <nicholas at mxc.ca> >Subject: Re: [LLVMdev] glod plugin use >To: Swarup Kumar Sahoo <ssahoo2 at illinois.edu> >Cc: llvmdev at cs.uiuc.edu, Rafael Espindola <espindola at google.com> > >Swarup Kumar Sahoo wrote: >> Hi, >> I was trying to use gold plugin to compile and run some of my passes on some large softwares like mysql, apache etc. When I compile usin...

...to backtrace instructions ,this may be not very efficient if the operation is very complex! -Jin Huang 2014/1/3 Jin Huang <54jin.huang at gmail.com<mailto:54jin.huang at gmail.com>> Thank You ! John and Swarup. I have already downloaded the code! 2014/1/3 Sahoo, Swarup Kumar <ssahoo2 at illinois.edu<mailto:ssahoo2 at illinois.edu>> Hi Jin Huang, The updated Giri code is available at https://github.com/liuml07/giri<https://github.com/liuml07/giri.>. This will give you an idea of how to instrument the program to trace different values. You can modify the code to...

Hi, I was trying to build clang (svn head version) using clang-3.1 version. I am building a debug version using LTO/gold plugin. It is crashing with signal 9 when trying to link the bitcode files to build the executable. I am not sure, if this is a bug or just a memory issue. Has anyone done anything similar or noticed similar behavior? Any help would be welcome. Thanks, Swarup.

...namic),I had to backtrace instructions ,this may be not very efficient if the operation is very complex! -Jin Huang 2014/1/3 Jin Huang <54jin.huang at gmail.com> > Thank You ! John and Swarup. I have already downloaded the code! > > > > > 2014/1/3 Sahoo, Swarup Kumar <ssahoo2 at illinois.edu> > > Hi Jin Huang, >> >> The updated Giri code is available at https://github.com/liuml07/giri<https://github.com/liuml07/giri.>. >> This will give you an idea of how to instrument the program to trace >> different values. You can modify the c...

Two suggestions: - Use a 64-bit operating system. - You could disable the LTO optimizations by commenting out a few lines in tools/lto/LTOCodeGenerator.cpp to determine if the problem is a pass or with LTO itself. On Wed, Oct 17, 2012 at 10:38 AM, Sahoo, Swarup Kumar <ssahoo2 at illinois.edu> wrote: > Hi, > > I was trying to build clang (svn head version) using clang-3.1 version. > I am building a debug version using LTO/gold plugin. It is crashing with > signal 9 when trying to link the bitcode files to build the executable. I am > not sure, if...

Yes, the latest version can be downloaded from here https://github.com/liuml07/giri . The LLVM instrumentation code is in TracingNoGiri.cpp<https://github.com/liuml07/giri/blob/master/lib/Giri/TracingNoGiri.cpp> file and runtime code in Tracing.cpp. You may need to delete other unnecessary instrumentation code which you don't need. Thanks, Swarup. ________________________________

I was trying to call "DSGraph::computeCalleeCallerMapping" function on all caller-calle pair. But, in one case it gives an assertion failure. This is the error message I get. Processing internal callee function rt_error opt: /localhome/ssahoo2/llvm/src/lib/Analysis/DataStructure/DataStructure.cpp:2248: static void llvm::DSGraph::computeNodeMapping(const llvm::DSNodeHandle&, const llvm::DSNodeHandle&, __gnu_cxx::hash_map<const llvm::DSNode*, llvm::DSNodeHandle, __gnu_cxx::hash<const llvm::DSNode*>, std::equal_to<const...

Hi Jin Huang, The updated Giri code is available at https://github.com/liuml07/giri<https://github.com/liuml07/giri.>. This will give you an idea of how to instrument the program to trace different values. You can modify the code to achieve your goals. -Swarup. ________________________________ From: Criswell, John T Sent: Thursday, January 02, 2014 2:12 PM To: Jin Huang; llvmdev at

Hi, I found that LLVM 3.1 says Dominance frontier is deprecated. Can anyone please tell me, if there is any replacement for Dominance frontier & Postdominance frontier in LLVM? What are the options if we need to use them? Thanks, Swarup. -------------- next part -------------- An HTML attachment was scrubbed... URL:

...Fri, 1 Dec 2006 12:57:55 -0600 >From: "Andrew Lenharth" <andrewl at lenharth.org> >Subject: Re: [LLVMdev] DSGraph::computeCalleeCallerMapping failing >To: "LLVM Developers Mailing List" <llvmdev at cs.uiuc.edu> > >On 12/1/06, Swarup Kumar Sahoo <ssahoo2 at uiuc.edu> wrote: >> I was trying to call "DSGraph::computeCalleeCallerMapping" function on all caller-calle pair. > >Have you tried getting a bugpoint reduction? > >Andrew >_______________________________________________ >LLVM Developers mailing list >LLVM...

Hey all, I was wondering if clang/LLVM has support to compile glibc in its entirety? The only thing I could find of recent was this thread saying the only way it could really be done is to use the dragonegg plugin with gcc... https://groups.google.com/forum/#!topic/llvm-dev/pmZYVNTrVYQ [LLVMdev] clang/llvm with glibc 8 posts by 5 authors [X] [X] Dave Buehmann [X]

...find manual configuration errors in software deployment. The dynamic slicing can help a lot since the input is the key factor to locate errors. We have not a concrete plan for this project, but the dynamic slicing is heavily needed. Regards. On Thu, May 2, 2013 at 8:00 AM, Sahoo, Swarup Kumar <ssahoo2 at illinois.edu>wrote: > Hi Mingliang, > > We already implemented an usable version of Dynamic Backward Slicing > as part of our ASPLOS paper. So, I think this will be a good idea to extend > this project. I will also be interested in mentoring you for this project. > Ple...

Hi, We are working on a project related to software bugs of server applications at univ of Illinois at Urbana Champaign. We need to do a survey based on lots of past bugs. It will of great help, if someone can point where I can get such a list of past and current bugs, possibly with the fixes for us to analyze. This is just a survey and there should not be any security related issues. Thanks in

Hi, We are working on a project to improve garbage collection using pool allocation in llvm. Has anybody implemented any garbage collection algorithm in llvm? There is an incomplete semispace GC implementation in llvm. It will be of great help, if somebody has a complete GC implementation. Regards, Swarup. ************************************* Swarup Kumar Sahoo Thomas M. Siebel Center for

Hi Ahmad, If the Makefile contains only this command, then it is not worth spending time on GoldPlugin. If you are building a large project, then it will be simpler to use GoldPlugin. The steps you are using seem right. You can possibly combine the last two steps (3&4) using only 1 clang command. clang -g -O2 -o .libs/mergedexe .libs/mergedbc.bc -pthread -Wl,--export-dynamic

> >> Yes, ar and nm actually take -plugin option and if I pass this option, then I don't get these errors. But, llvm-gcc doesn't automatically pass this option to ar. > >You probably just need to copy the gold plugin to >$PREFIX/lib/bfd-plugins. Let me know if that works. If not I will >check if there is a bug in the plugin search in binutils. There is no problem in

Hi John and Silky, I can see a copy of 'giri' slicing project branch here http://llvm.org/viewvc/llvm-project/giri/. Though it may be little older, it will work I think. You can look at the code to see how we do the instrumentation. Thanks, Swarup. ________________________________________ From: John Criswell [criswell at illinois.edu] Sent: Tuesday, January 22, 2013 10:29 AM To:

Oh, OK. I didn't check the code. I think it only contains your flow tracking analysis code, isn't it. Our 'Giri' project was completely separate from it. Should we merge it with this or keep it as a separate project? -Swarup. ________________________________________ From: John Criswell [criswell at illinois.edu] Sent: Tuesday, January 22, 2013 12:12 PM To: Sahoo, Swarup Kumar Cc: