similar to: [LLVMdev] Problem executing code with lli...

Hi all, I'm trying to print to screen the value read by the fread function. I'm at the point where source refers to the GetElementPtrInst ( pointer to the buffer where fread stored the data - %5 in my case ) and the fread() has been already called. I thought the correct approach to achieve what I need was: ExecutionContext& SF = ECStack.back(); GenericValue SRC =

Hi owen, Can you please elaborate as to what should I do? Find all the instruction which have r2 in it and replace all of them with r1 and then remove the load instruction? Thanks Abhinav ----- Original Message ----- From: "Owen Anderson" <resistor at mac.com> To: "LLVM Developers Mailing List" <llvmdev at cs.uiuc.edu> Sent: Friday, November 14, 2008 11:22:32 PM

r2->replaceAllUsesWith(r1); r2->eraseFromParent(); LLVM makes it easy! ;-) --Owen On Nov 15, 2008, at 11:02 PM, Karhu, Abhinav R wrote: > Hi owen, > Can you please elaborate as to what should I do? Find all the > instruction which have r2 in it and replace all of them with r1 and > then remove the load instruction? > Thanks > Abhinav > ----- Original Message

Hi all, Can anybody tell me how to generate a mov instruction in llvm. I found out there is a MemMove Inst but I dont think that is what I want. I want to bypass a load instruction. So i need to generate a mov instruction which will help me remove the redundant load. Thanks -- Abhinav Karhu MS Computer Science Georgia Institute of Technology

Hey all, I compiled the code using both the -c and -S options. I can get the human readable IR but I still cannot run it using lli. The output of the IR looks like this. Can some of the information tell me about why the program is not running. ; ModuleID = 'Hel.c' target datalayout = "e-p:32:32" target endian = little target pointersize = 32 target triple =

On Fri, Nov 14, 2008 at 2:13 PM, Karhu, Abhinav R <akarhu3 at gatech.edu> wrote: > > Hi all, > Can anybody tell me how to generate a mov instruction in llvm. I found out there is a MemMove Inst but I dont think that is what I want. > I want to bypass a load instruction. So i need to generate a mov instruction which will help me remove the redundant load. At the LLVM IL level,

Hi Eli, I want to do redundant load elimination. A simple example for that would be load (a1) , r1; --- --- --- load (a2) , r2; Now if a1 and a2 are alias of each other and the value stored in a1 and a2 remains the same then I can say that the second load is redundant. I can replace the second load with these instructions mov r0 r1; mov r0 r2; and remove the load instruction. This is the thing

I have compiled the program using the following option. llvm-gcc --emit-llvm Hello.c -o Hel.bc I have used llvm in the past but this sort of problem is new for me. I dont know how to go about it. Thanks for the reply. -- Abhinav Karhu MS Computer Science Georgia Institute of Technology

Hey all, I am getting this weird error which suddenly popped up today. Whenever I am trying to execute a piece of code using lli I get this following error. Error loading program 'sample.bc': Invalid bytecode signature: 464C457F (Vers=0, Pos=4) I dont know what to do..Please reply to this question. Please... -- Abhinav Karhu MS Computer Science Georgia Institute of Technology

[I assume you meant to send this to the list as well, not just me.] Begin forwarded message: Date: Wed, 3 Nov 2010 14:43:54 +0000 From: Salomon Brys <salomon.brys at gmail.com> To: Török Edwin <edwintorok at gmail.com> Subject: Re: [LLVMdev] Forcing the Interpreter segfaults I have build LLVM in debug mode. Here are the informations of the segfault : memcpy() at 0x7ffff6f6581e

Hi Salomon, please don't forget to reply to the list too (I've CC'd the list). > I don't think my code is doing anything worng... No, it looks fine to me, and the interpreter certainly supports this. That suggests that the value of %str is not being transmitted to the function right. If it is getting the wrong pointer value, that would explain why it barfs. Ciao, Duncan.

Hi all, I've been quiet for a while, but I'm liable to be less so now that I'm starting on porting our model checker from LLVM 1.8 to 2.0. One thing that is puzzling me somewhat are the changes made to the GenericValue union, which is now a struct. I haven't found any mention of this on the llvm site or in the archives, so it may be that I am the only one who cares about it

Reid Spencer wrote: > Hi Sarah, > > On Tue, 2007-07-17 at 10:05 -0700, Sarah Thompson wrote: > >> Hi all, >> >> I've been quiet for a while, but I'm liable to be less so now that I'm >> starting on porting our model checker from LLVM 1.8 to 2.0. >> > > We missed you! :) > > Yes, apologies again for not making the

The blog post I linked to implied that adding a symbol in the form lle_X_FUNCTIONNAME would allow you to call a function called FUNCTIONNAME. Is this not the case? On Thu, Aug 19, 2010 at 6:46 PM, <o.j.sivart at gmail.com> wrote: > You are adding the symbol as "lle_X_create_number_object" yet your error > message implies you have tried to lookup and use

Valery, Attached are three files: "valery.cpp" which contains your original, "reid.cpp" which contains corrections to most of the FIXME items and "diffs" which shows the differences between them. The differences should be instructive on what to do. You were really, really close .. just a few details changing. The code in "reid.cpp" compiles but I

Sorry I forgot to add code that I use to run code: /* Executes the AST by running the main function */ GenericValue CodeGenContext::runCode() { std::cout << "Running code...\n"; ExecutionEngine *ee = EngineBuilder(module).create(); vector<GenericValue> noargs; GenericValue v = ee->runFunction(mainFunction, noargs); std::cout << "Code was run.\n"; return v;

Is there documentation somewhere on how to call external functions from llvm? The only guide I found was this: http://www.gearleaf.com/blog/post/44, and it doesn't seem to be working for me. I have a function: llvm::GenericValue lle_X_create_number_object(llvm::FunctionType* ft, const std::vector<llvm::GenericValue>& args) { llvm_object_structure* result = new

I'm having another play with LLVM using the OCaml bindings for a forthcoming OCaml Journal article and I have a couple of remarks: Firstly, I noticed that the execute engine is very slow, taking milliseconds to call a JIT compiled function. Is this an inherent overhead or am I calling it incorrectly or is this something that can be optimized in the OCaml bindings? Secondly, I happened to

Morten Ofstad wrote: >> Hi, >> >> There's no HAVE_RAND48 symbol provided by autoconf. You'll have to >> add the appropriate check to autoconf/configure.ac before we can take >> this patch. I installed autoconf with cygwin now and I think I've managed to do this right now -- there are some strange problems with running the AutoRegen.sh script, so I

> Hi, > > There's no HAVE_RAND48 symbol provided by autoconf. You'll have to add > the appropriate check to autoconf/configure.ac before we can take this > patch. Sorry I forgot to mention I didn't make any changes to the configure script. The problem is that I can't test these things since I'm not on a Unix platform, and I'm not even using the