similar to: [LLVMdev] Beginner question: request guidance on how to trace 'make check' failure in SVN build

Greetings everybody, I'm at beginner level with LLVM and tried to build the sources from SVN revision 54920 on Fedora 9 (kernel 2.6.25-14.fc9.x86_64) running on Intel Q6600 @ 2.40GHz processor. LLVM build using 'make -j 4' was successful. However, during 'make check', a test case failed. The relevant snippets appear below. Can someone please point me to any links on how the

Hi, when reporting http://llvm.org/bugs/show_bug.cgi?id=5104 I spent quite a while trying to figure out what passes are used by "-O1" so that I could give this list to bugpoint. It turns out -debug-pass=Arguments is mentioned in docs/HowToSubmitABug.html but under a chapter titled "Compile-time optimization bugs" which I naively ignored since my bug was not a compile-time

Thank you for this information. If so, is there any way to grasp which kinda data throw in and out in LLVM as shown in such a way in gdb? Thanks, Seung Jae Lee ---- Original message ---- >Date: Tue, 20 Feb 2007 23:54:04 -0600 >From: "John T. Criswell" <criswell at cs.uiuc.edu> >Subject: Re: [LLVMdev] bugpoint usage >To: LLVM Developers Mailing List <llvmdev at

On Fri, Apr 22, 2005 at 01:46:53AM +0200, Markus F.X.J. Oberhumer wrote: > Debugging code generator problem! > <cbe><gcc><program>Warning: While generating reference output, program > exited with > non-zero exit code. This will NOT be treated as a failure. > > *** The C backend cannot match the reference diff, but it is used as the > 'known good'

Chris, I'm a little confused. I am experiencing a crash when compiling the llvm-gcc frontend. According to the bugpoint documentation, bugpoint is used to debug "optimizer crashes, miscompilations by optimizers, or bad native code generation," which seems like it implies that the frontend compiles. Also, the http://llvm.org/docs/HowToSubmitABug.html documentation seems to

On Thu, Oct 16, 2008 at 12:03 PM, Villmow, Micah <Micah.Villmow at amd.com> wrote: > What exactly are the standard compile options that are implemented when > using -std-compile-opts? > > The reason I'm asking is it seems that -std-compile-opts creates some CFG > graphs that are invalid and should not be created and I am trying to figure > out which stage is creating

Thank you so much for this info. That's exactly what I want. But, I'm still not sure about using -g. Let me imagine I am modifying x86 assembly instructions and trying to test it with 'hello.c' to check out the assembly is properly emitted. I should type "$ llvm-gcc hello.c -o hello" to have the bytecode of 'hello.c'. And then I can have an x86 assembly mnemonics

On Wed, 20 Apr 2005, Markus F.X.J. Oberhumer wrote: > Misha Brukman wrote: >> On Tue, Apr 19, 2005 at 07:01:40AM +0200, Markus F.X.J. Oberhumer wrote: >> >>> While trying to hunt down a codegen bug (not yet found) ... >> >> Have you considered using bugpoint for your codegen debugging needs? >> http://llvm.cs.uiuc.edu/docs/Bugpoint.html#codegendebug >

What's different about code that's been mem2reg'd from straight front end code, or anything that mem2reg hasn't been run on? PHINODES! It appears to be crashing when I try to cast a Value* that's really a BB* (from the PHInode operands) to a User*, insteresting since I am dyn_casting. I just caught this on cerr though (printing out what the Value* was each time). Let me

On Wed, Jun 23, 2004 at 03:50:09PM -0500, Patrick Meredith wrote: > MetaSplit is an anlysis I just finished writing. It doesn't alter > anything, all it does is build a set of "program instructions". For > some reason even though if I run it with any other combination of > passes I've found, anytime I run it with mem2reg I get a seg fault in > dyn_cast!

Somehow it fails with operand out of bounds when the number of operands is 2 and I am asking for the second operand. ----- Original Message ----- From: "Chris Lattner" <sabre at nondot.org> To: <llvmdev at cs.uiuc.edu> Sent: Wednesday, June 23, 2004 4:24 PM Subject: Re: [LLVMdev] weird issue with mem2reg, should have guessed > On Wed, 23 Jun 2004, Patrick Meredith

void MetaSplit::handleProgramUses(Value *V){ if(!isa<BasicBlock>(V)) programValues.insert(V); if(User *U = dyn_cast<User>(V)){ User::op_iterator OB = U->op_begin(), OE = U->op_end(); for(; OB != OE; ++OB){ if(CallInst *CI = dyn_cast<CallInst>(*OB)){ Function *F = CI->getCalledFunction(); if(F == ii || F == fi || F == vi || F == di || F == ci

On Wed, 23 Jun 2004, Patrick Meredith wrote: > What's different about code that's been mem2reg'd from straight front end > code, or anything that mem2reg hasn't been run on? PHINODES! Yup, front-ends generally don't produce SSA form. :) > It appears to be crashing when I try to cast a Value* that's really a > BB* (from the PHInode operands) to a User*,

On Wed, 23 Jun 2004, Patrick Meredith wrote: > Somehow it fails with operand out of bounds when the number of operands > is 2 and I am asking for the second operand. Second meaning operand 1. Okay, so you have something like this: if (CallInst *CI = dyn_cast<CallInst>(...)) { ... = CI->getOperand(1); } Can you send in this snippet of code, the assertion, and the

On Wed, 22 Aug 2007, Ryan M. Lefever wrote: > I checked llvm-gcc 4.0 out from svn yesterday and am compiling it on 3 > different machines. I was able to compile it on 2 of the machines, but > the compilation failed on the third machine with the errors below. The > machine that the compilation failed on is running Fedora Core 4. The > processor is a AMD Athlon(tm) 64 Processor

On Mon, May 16, 2005 at 05:15:30PM -0700, John Cortes wrote: > If I use any of the regalloc parameters (local, ...) I get an error in > the LiveVariable.cpp file, in the part that I think cheaks for dead > code because a Variable didn't have a defined Instance to a Machine > instruction. > > " llc: LiveVariables.cpp:86: void >

Hello, Even I think it would be a very big project for just 3 months, but it would be fun learning and developing this. I feel I have the required skills and would like to learn more for this. I have just one doubt regarding the GPU required for the task. Will a normal NVIDIA GT 740m would be enough or we need better GPUs like Tesla or Quadro? In the latter case how can one proceed in case of its

On Wed, Apr 20, 2005 at 12:12:54PM +0200, Markus F.X.J. Oberhumer wrote: > Misha Brukman wrote: > >On Tue, Apr 19, 2005 at 07:01:40AM +0200, Markus F.X.J. Oberhumer > >wrote: Have you considered using bugpoint for your codegen debugging > >needs? http://llvm.cs.uiuc.edu/docs/Bugpoint.html#codegendebug > > Well, the (critical) bug in question was >

Hi, I think a nice project would be to write an application to figure out those latencies automatically maybe even based on envydis. It could generate latency information based on thread count, register usage, instruction/instruction class, hw unit used. Or even tries to figure out what kind of units exist. Like instructions out of a group which are free to issue/execute after instructions out

There's not a lot of information about it. Basically we need 2 instruction scheduling passes -- one pre-RA and one post-RA. The prerequisites are "know how compilers work" and "have a GPU that you can test performance on". I won't beat around the bush - this is a very tough project. Every attempt at it so far has basically failed. There are a lot of issues that have to