similar to: [LLVMdev] Help on LLVM Instrumentation

Hi , I am using LLVM for my Post Graduate course project on Optimization. I am trying to do some insrtumentation to the bytecode.I 've been going through your Instrumentation code for the past few days in /llvm/lib/Transforms/Instrumentation folder and finally found two ways of instrumentation : 1) injecting LLVM bytecode instructions 2) calling an external C function. I am trying both and

I'm an LLVM newbie, trying to write a pass that adds instrumentation to a program, and have a couple of questions. For purposes of this discussion, suppose I'm trying to add a per-function counter that is incremented each time a function is called. At the end of the target program's execution, I would like to output the value of each counter. My questions are as follows: 1.

Alexander, On Darwin the "__cstring" section (really section with type S_CSTRING_LITERAL) is defined to contain zero terminate strings of bytes that the linker can merge and re-order. If you want pad bytes before and after the string, you need to put the strings in a different section (e.g. __TEXT, __const). But, CF/NSString literals will be problematic. The compiler emits a static

(forgot to CC llvmdev) On Thu, Mar 21, 2013 at 5:54 PM, Alexander Potapenko <glider at google.com> wrote: > Hey Anna, Nick, Ted, > > We've the following problem with string literals under ASan on Mac. > Some global string constants end up being put into the .cstring > section, for which the following rules apply: > - the strings can't contain zeroes in their

Hi , Regarding my previous help on LLVM Instrumentation , gdb helped me out. Your docs on Writing an LLVM Pass - Using gdb with dynamically loaded passes was very useful. I've done some instrumentation and collected profiles during runtime using library routines in a separate pass with opt tool. I used : In the tools/lli/Makefile , I included the following line TOOLLINKOPTS :=

Is it there any possibility to create virtual machine by using the XEN java API ? >From where can I get the proper documentation for Xen Java API.?? Thanks is advance Rajiv .R Project Associate CARE,MIT, Anna university, Chennai India _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

Hi I have installed libguestfs in Fedora Core 13. Here's the packages I ve installed. [root at kvmcluster ~]# rpm -qa | grep guest guestfish-1.2.2-1.fc13.i686 perl-libguestfs-1.2.2-1.fc13.i686 libguestfs-1.2.2-1.fc13.i686 libguestfs-tools-1.2.2-1.fc13.i686 And I have tried to resize the KVM guest image with virt-resize command. But I'm getting the error as "virt-resize: sorry this

Hi I have configured KVM with Fedora Core 13 by enabling the KVM virtualization option while installing OS. I have successfully created the guest OS by using the virt-install API /usr/sbin/virt-install --name centos5 --ram 512 --disk path=/var/lib/libvirt/images/ centos.img,size=5 --network network:default --accelerate --vnc -c /tmp/CentOS-5.3-i386-bin-DVD.iso I am able to login to the guest OS

On Wed, 7 Apr 2004, Reid Spencer wrote: > (2) Would it be useful to turn the call graph data ino a pretty picture > via graphviz (both statically and dynamically) ? Sure: analyze -print-callgraph foo.bc > (3) How much of this auto-instrumentation pass is already written in > existing passes? There are various instrumentation passes already in LLVM, for example, to trace

Yesterday I was forced to migrate servers due to a hardware failure. I have been able to bring up my mail server, and set up Squirrelmail and Dovecot. I am able to access (via Squirrelmail) all users' mail except one - which happens to be my wife's, so it would be really helpful if I could get that working too. I am able to log in, but see the following message in the main pane:

On Thursday, March 13, 2014, Diego Novillo <dnovillo at google.com> wrote: > > On Mar 13, 2014 6:57 PM, "Bob Wilson" <bob.wilson at apple.com<javascript:_e(%7B%7D,'cvml','bob.wilson at apple.com');>> > wrote: > > > > > This is a proposal for the instrumentation-based approach that I talked > about at the dev meeting. I

When either '-pg' or '-finstrument-functions' is used, the compiler inserts the appropriate profiling hooks. This happens prior to inlining, so the hooks remain in place. Normally this is fine, but with C++ and the heavy use of inline functions and templates, there can be a vast number of trivial functions that are normally optimised away; but with the instrumentation hooks

We've just released the project code for public review. You can find the diffs at the following links: CSI LLVM pass: http://reviews.llvm.org/D21445 CSI Clang support: http://reviews.llvm.org/D21446 CSI Runtime and tests: http://reviews.llvm.org/D21447 The RST for the CSI project can be found with the Clang diff. We know that this code requires changes, additions, more tests, cleanup, etc.

Hi All, My instrumentation code needs to insert calls to transmit Value list. Each element in this list could be of different type. The list is sent to instrumenting function say void recordVarInputValues(int num, ...) . So, I have created a Union type in Tracing.cpp, which I link with my benchmark module at compile time. These steps are similar to giri instrumentation

"R Installation and Administration", section 2.5 "Sub-architectures" describes calling specific builds of R using the call "R --arch=name". I am trying to build and install three versions of R-2.9.1, each configured with a different valgrind-instrumentation level ("Writing R Extensions", section 4.3.2 "Using valgrind"). My goal is to be able to

> On Dec 13, 2016, at 3:46 AM, Martin J. O'Riordan via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > When either ‘-pg’ or ‘-finstrument-functions’ is used, the compiler inserts the appropriate profiling hooks. This happens prior to inlining, so the hooks remain in place. Have you tried compiling with -fprofile-generate? It enables IR-based profiling instrumentation, which

Thanks Vedant, and my apologies for the delay getting back to you - work got "busy". I wasn't aware of the '-fprofile-generate' option, so thanks for point this out. I have tried running it and I can see the instrumentation hooks that it generates - I assume that there is a library I have to implement to support this, can you let me know where the source for this library

On 12/7/11 4:51 PM, Nipun Arora wrote: > Hi, > > I need to write a transform pass which instruments the target program to > output the name of each function executed, and the rdtsc counter along > with it. Doing this in LLVM is really straightforward. You simply iterate through all the functions in a module and add instructions to their entry basic blocks to do whatever it is

Hello everyone, I want to use LLVM to perform instrumentation on existing bitcode file. I want to declare a global variable using cpp standard library, say vector<int> glVector(3); So I need to get the LLVM Type* of the global variable and then the initial value Constant* of the global variable. However, the type of vector is not the primitive type but defined in the vector.h of C++

Hello, I'd like to listen your opinions regarding my research with LLVM. My work is a dynamic analysis of data dependences [1]. Briefly speaking, I'm instrumenting memory loads/stores and loop entries/exits/back edges, and then calculating data dependences in runtime, especially focusing on loop-carried dependences. So far, I have been working with a binary-level instrumentation tool