similar to: [LLVMdev] Segmentation fault on Instruction.moveBefore()

The funny thing is that i am manually able to hoist the Loop invariant instruction to the basicBlock terminator, by editing the human readable form and then using llvm-as to convert it into bytecode. On Thu, Nov 18, 2010 at 4:01 AM, Chris Lattner <clattner at apple.com> wrote: > > On Nov 17, 2010, at 1:38 PM, Sreeraj a wrote: > > > Thanks Chris, > > > > I was

i am getting seg fault on functions like I->eraseFromParent also. I'm assuming that the problem comes when i change the loop structure. On Thu, Nov 18, 2010 at 4:05 AM, Sreeraj a <writetosrj at gmail.com> wrote: > The funny thing is that i am manually able to hoist the Loop invariant > instruction to the basicBlock terminator, by editing the human readable form > and then

my changed code. namespace { class MyLoopPass:public LoopPass { bool changed; public: static char ID; Loop* curLoop; // AnalysisType* AA; DominatorTree* DT; LoopInfo* LI; MyLoopPass() : LoopPass(ID){} bool isLoopInvariantInst(Instruction &I) ; bool runOnLoop(Loop * L, LPPassManager &lpm); virtual void getAnalysisUsage(AnalysisUsage &AU) const {

Thanks Chris, I was able to weed out loop invariant arithmetic instructions using isLoopInvariant function. when i try to do an instruction->moveBefore(bb->getTerminator()) i'm getting a seg fault. any obvious reasons that i'm missing out on? Thanks in advance On Wed, Nov 17, 2010 at 10:41 PM, Chris Lattner <clattner at apple.com> wrote: > > On Nov 17, 2010, at 2:20

On Nov 17, 2010, at 1:38 PM, Sreeraj a wrote: > Thanks Chris, > > I was able to weed out loop invariant arithmetic instructions using isLoopInvariant function. > when i try to do an instruction->moveBefore(bb->getTerminator()) i'm getting a seg fault. > any obvious reasons that i'm missing out on? No idea, sorry. -Chris

On Nov 17, 2010, at 2:20 AM, Sreeraj a wrote: > Hi, > I'm trying to write a simple pass to print out Loop invariant instructions, using the > Loop::isLoopInvariant(Instruction *I) > function. it is giving me false value on instructions which should be loop invariant. > > the code i am using is: The isLoopInvariant method just works for scalar operations like

Hi, I'm trying to write a simple pass to print out Loop invariant instructions, using the Loop::isLoopInvariant(Instruction *I) function. it is giving me false value on instructions which should be loop invariant. the code i am using is: bool MyLoopPass::runOnLoop(Loop * L, LPPassManager &lpm){ BasicBlock* lat=L->getLoopLatch(); for (BasicBlock::iterator i = lat->begin(), e =

Hi, In my code generator, I need to prepare a block and add instructions to it, then insert this block in a function defined later (that is I cannot create the function at the beginning stage become some info are not available yet). I tried to create a block without any "parent" (BasicBlock::Create(getGlobalContext(), "init"), fill it, but how to link it with the created

Hi i am trying to write an optimization wherein i need to get the size of each instruction in the loop. is there any framework that allows me to find out the size of an Instruction I ? thanks. sreeraj -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20101202/94736d3f/attachment.html>

Hi, I am new to R. I don't have strong background of statistics. I am a student of Geotechnical Engineering. I tried to run a nonlinear regression for a three-variable function, that is N = f(CSR, ev) # N is a function of CSR and ev, and N = CSR/(A +B*CSR), wherer (A,B) are function of ev. N, CSR and ev are observed in the experiments. Following is my R script. rm(list=ls())

On Jun 13, 2010, at 2:12 AM, Stéphane Letz wrote: > Hi, > > In my code generator, I need to prepare a block and add instructions to it, then insert this block in a function defined later (that is I cannot create the function at the beginning stage become some info are not available yet). I tried to create a block without any "parent" (BasicBlock::Create(getGlobalContext(),

Hi Chris, >> In my code generator, I need to prepare a block and add instructions to it, then insert this block in a function defined later (that is I cannot create the function at the beginning stage become some info are not available yet). I tried to create a block without any "parent" (BasicBlock::Create(getGlobalContext(), "init"), fill it, but how to link it with

2012/2/3 Patrik Hägglund <patrik.h.hagglund at ericsson.com>: > Hi, > > I've tracked the first problem (mentioned in my previous email, quoted > below) down further, ending up in the handling of alloca in > LoopRotation.cpp (from trunk): > >      // If the instruction's operands are invariant and it doesn't read > or write >      // memory, then it is

Hello LLVM Developers, I'm trying to replace a function defined in one module into another module (different files). The first issue I ran into was that llvm::Function does not have a method "moveBefore" or "moveAfter" as the llvm::BasicBlock or llvm::Instruction do, so I figured I would just move the BasicBlocks of the replacing function into the function that was being

I''ve just reinstalled linux (9.10) and am trying to match my gem environment to our server''s. I''m having a problem with will_paginate. On the server, under gem list, i have "mislav-will_paginate (2.3.6)". So, i''m trying to install that locally. Following the instructions on the will_paginate page, http://wiki.github.com/mislav/will_paginate,

Hi, I've tracked the first problem (mentioned in my previous email, quoted below) down further, ending up in the handling of alloca in LoopRotation.cpp (from trunk): // If the instruction's operands are invariant and it doesn't read or write // memory, then it is safe to hoist. Doing this doesn't change the order of // execution in the preheader, but does

Hello and thanks for the answer, I'm still facing issues, I'll do my best to explain my situation, as I explained, I have two modules, each one with its own main and functions, I would like to replace in the *oldModule* a function call that is calling *foo2* (defined in *oldModule*) to instead call *foo3*, which is defined in the *refModule. *So in summary, I have: 1. The original

Hi ! I'm writting an AliasAnalysis using the online tutorial (http://www.llvm.org/docs/AliasAnalysis.html). My problem is to chain this pass (function Pass in my case) with the basicAA ... I know that my pass is running (runOnFunction) but the virtual methods derived from AliasAnalysis (alias, getModRefInfo, etc ... ) are never called (even in the case wherer the basicAA reaches the end

Hi Ahmad, What does that tool does besides what LLVM linker already does? I don't think my problem is in linking both modules, I think LLVM linker does the job for me, the issue is when changing the called function to call another function (in the example previously provided, to change it from foo2 to foo3, and adjusting the function parameter's references). Regards, Daniel Moya El

Hi, I have two problems regarding the llvm.stackrestore intrinsic. I'm running on 3.0, but a quick test on trunk also showed the same behavior. First problem: --------------- I have code like: tmp1 = call llvm.stacksave() tmp2 = alloca [do some stuff with tmp2] call llvm.stackrestore(tmp1) [some other stuff] tmp3 = call llvm.stacksave() tmp4 = alloca [do some stuff