similar to: [LLVMdev] GSoC 2009 application

Hello, Kshitiz > I was interested in taking up the project ideas on adding profile driven > optimization passes and improving alias analysis as this would give me a > chance to carry forward and improve my current work and also contribute > significantly in terms of tangibles. This sounds like a great idea. LLVM definitely lacks some profile-driven optimizations. -- With best

Here is my formal proposal i have submitted in gsoc. Comments invited. About me: I am a final semester Dual Degree( B.Tech. M.Tech.) student from Indian Institute of Technology, Kanpur. I was looking forward to participate in this year's GSoC 2009.Starting Fall 2009 i shall be pursuing a Phd in compilers. I am having a good background in compilers. My current masters thesis is aimed at

On Apr 3, 2009, at 12:52 AM, Kshitiz Garg wrote: > Here is my formal proposal i have submitted in gsoc. Comments invited. > This sounds like a very interesting proposal. Many compilers clone loops and use dynamic checks to enforce invariants in one copy of the loop. Is this intended to be similar to that style of approach? -Chris > > About me: > > I am a final

Hello, I was trying to extract out the IR for some CELLBE code. However i was not able to compile with llvm-gcc. Has someone who has tried this shed some light on the changes required to use llvm-gcc instead of gcc or xlc. A simple replacement of gcc with llvm-gcc -emit-llvm -S or marking $CC as llvm-gcc in the makefile did not work for me. I am using the standard makefile format supplied

I am trying to use the indvars pass on a simple loop but it does not seem to have any effect The sample code i am using is #include <stdio.h> int test (int p); int main(){ int a,b=3; for(a=7;a*a<100;++a){ if(b >3) test(3); b++; } return 1; } int test(int p){ return p; } According to documentation

Hello, I wanted to do some speculative execution on a loop for which I require some data storage structure for book keeping. The exact structure of this storage buffer can only be determined after loop analysis. Is there a clean way to add this new structure to the module. Since this structure is to be used for each loop iteration I do not want to allocate it inside the loop. A second

Hello, I was trying to get the loop info in a module pass to be able to iterate over the loops int the module itself. Since my pass requires to make module level changes including adding new types to module hence a looppass cannot be used here. I am getting the following error on running opt. opt: /root/llvm-2.4/include/llvm/PassAnalysisSupport.h:199: AnalysisType&

On Wed, Apr 22, 2009 at 12:10 AM, Kshitiz Garg <ksh.cseiitk at gmail.com> wrote: > Hello, >     I wanted to do some speculative execution on a loop for which I > require some data storage structure for book keeping. The exact > structure of this storage buffer can only be determined after loop > analysis. Is there a clean way to add this new structure to the > module. Since

On Wed, Apr 8, 2009 at 10:26 AM, Kshitiz Garg <ksh.cseiitk at gmail.com> wrote: > Neither is there a Phinode for a Maybe you need to run mem2reg first? -Eli

Devang, Let me reframe my question.I require to keep this extra information as a structure so as to pass it around to other functions which require it. Specifically I am working on CellBE and wish to DMA this information to the SPEs The way of adding the information by PHI nodes will not suffise since the information may be very large in some cases which will need to be transfered by a DMA rather

Kshitiz Garg wrote: > Hello, > I was trying to get the loop info in a module pass to be able to > iterate over the loops int the module itself. Since my pass requires > to make module level changes including adding new types to module > hence a looppass cannot be used here. > I am getting the following error on running opt. > > opt:

Hello, Is there a way such that one can insert #pragmas and /or comments in the IR such that the C code produced by llc has those pragmas which can be used later by another tool?. Say for example I have a pass that shall do some analysis and modifications to provided source code. Then I wish to parallelize the modified loop using open-MP by inserting openmp pragmas in the generated c

I am getting the following error when i am trying to generate the code. In the optimization pass I have inserted some calls llvm.annotation.i32 class to provide indentification tags to loops to be used in subsequent passes. Codegen is complaining about these annotations. llc -march=c ham1_seq.bc3 Error: Code generator does not support intrinsic function 'llvm.annotation.i32'! llc

Hi, I was wondering how to add header files to code in LLVM. I am trying to create a small profiler to track the actual time spent in functions. For this i am adding call to clock() in the C code of the given program. However this will require adding the file time.h to C code. Can some tell me a way to do so. I have tried using Module.addLibrary("time.h"); but this doesn't seem

Hi again everyone... After following the "Writing an LLVM Pass" tutorial using LLVM 2.5, there is a part that states that: "This makefile specifies that all of the .cpp files in the current directory are to be compiled and linked together into a Debug/lib/Hello.so shared object that can be dynamically loaded by the opt or bugpoint tools via their -load options."

On Thu, May 7, 2009 at 10:12 PM, Eli Friedman <eli.friedman at gmail.com> wrote: > On Thu, May 7, 2009 at 9:25 AM, Kshitiz Garg <ksh.cseiitk at gmail.com> wrote: >>> Can you give a couple examples of error messages you're getting? >>  llvm-gcc -emit-llvm -S        -W -Wall -Winline -Wno-main  -I.  -I >> /opt/cell/sysroot/usr/spu/include -I >>

Hi, I am a student at IIT Kanpur. I am working on Path Profiling, i just came with a need to know about the number of static paths in a program(actually in a function) before it's actually get run. As i saw in PathProfiling.c file in llvm\runtime\libprofile they are just storing the path information at run time and dynamically adding entries for the new path. But i need to know the number of

On Fri, Mar 27, 2009 at 11:18 PM, jstanier <j.stanier at sussex.ac.uk> wrote: > > Hi again everyone... > > After following the "Writing an LLVM Pass" tutorial using LLVM 2.5, there > is > a part that states that: > > "This makefile specifies that all of the .cpp files in the current > directory > are to be compiled and linked together into a

On Thu, May 7, 2009 at 9:39 PM, Eli Friedman <eli.friedman at gmail.com> wrote: > On Thu, May 7, 2009 at 9:03 AM, Kshitiz Garg <ksh.cseiitk at gmail.com> wrote: >>    I was trying to extract out the IR for some CELLBE code. However i >> was not able to compile with llvm-gcc. > > Can you give a couple examples of error messages you're getting? llvm-gcc

Hi, I am a student at IIT Kanpur. I am working on Path Profiling, i just came with a need to know about the number of static paths in a program(actually in a function) before it's actually get run. As i saw in PathProfiling.c file in llvm\runtime\libprofile they are just storing the path information at run time and dynamically adding entries for the new path. But i need to know the number of