similar to: [LLVMdev] Static Basic Block Execution Frequency Analysis?

Hi all, How Can I get the Loops around an Instruction? I know I can get the basic block of an instruction using inst.getParent() which returns a BasicBlock*. Now I want to use the getLoopFor(BasicBlock) method of the class LoopInfo. But I dont know how to get the LoopInfo. BasicBlock* bb = inst.getParent(); (... what should I add here?) Loop* innerloop = LI -> getLoopFor(bb): Thanks.

On 2/28/11 4:43 PM, Devang Patel wrote: > > On Feb 28, 2011, at 2:35 PM, Naznin Fauzia wrote: > >> Hi all, >> >> How Can I get the Loops around an Instruction? >> >> I know I can get the basic block of an instruction using >> inst.getParent() which returns a BasicBlock*. Now I want to use the >> getLoopFor(BasicBlock) method of the class

Thanks Devang and John. My pass is actually a loop pass, not a function pass. So, I couldnt override the getAnalysisUsage. I am in a loop pass, I know the outermost loop. Now How can I get the loopInfo from here? I couldn't find helpful methods in the LoopInfo class documents. On Mon, Feb 28, 2011 at 5:52 PM, John Criswell <criswell at illinois.edu>wrote: > On 2/28/11 4:43 PM,

On Feb 28, 2011, at 2:35 PM, Naznin Fauzia wrote: > Hi all, > > How Can I get the Loops around an Instruction? > > I know I can get the basic block of an instruction using inst.getParent() which returns a BasicBlock*. Now I want to use the getLoopFor(BasicBlock) method of the class LoopInfo. > But I dont know how to get the LoopInfo. > > BasicBlock* bb =

On Mon, Feb 28, 2011 at 6:04 PM, Naznin Fauzia <laboni14 at gmail.com> wrote: > Thanks Devang and John. My pass is actually a loop pass, not a function > pass. So, I couldnt override the getAnalysisUsage. > A LoopPass is no different from a FunctionPass here. You can use getAnalysisUsage and getAnalysis in a LoopPass. > I am in a loop pass, I know the outermost loop. Now How

Dear All I'm making a transformation pass that inserts a new basic block at the start of a loop. However when I try to change predecessor/successor relations, it does not consider the new block in the loop at all. So I got that just inserting a loop in a function before another loop is not enough. So how exactly to do this job? Regards, Marwa Yusuf Teaching Assistant - Computer Engineering

I am writing an LLVM pass, where in certain cases, I want to know all the basic blocks in a loop. I can get the loop header by using combination of AU.addRequired < LoopInfo >( ); and getAnalysis < LoopInfo > ( *F ).isLoopHeader( BB ) But how do I get to know every basic block in that loop. -------------- next part -------------- An HTML attachment was scrubbed... URL:

I've read some small amounts of documentation including the Doxygen docs on the LLVM Profiling capabilities. I'm looking to extract basic block execution frequencies (I just need relative values within a function) in to a simplified custom format for my work (research in to instruction selection). The API seems geared more towards the use of profiling data in LLVM Passes and I was

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&

Hello, I am trying to write a new ModulePass using LoopInfo analysis result, but it seems I misunderstand some concept about PassManager. Basically I want to keep LoopInfo analysis result alive. Here is an example showing the problem I encountered, assuming I already addRequired<llvm::LoopInfo>() in getAnalysisUsage: void foo(llvm::Function *F1, llvm::Function *F2) { llvm::LoopInfo

Hi John & Fan, I hit the exact same problem today. I can confirm that Fan's observation of getting the *same* LoopInfo* from subsequent calls to getAnalysis<LoopInfo>(function) for *distinct* functions is indeed true. I was very surprised by this at first as well, but I think I've found an explanation - please anyone correct me if this is wrong: What you're getting from

On 3/9/12 4:10 PM, Fan Long wrote: > Hello, > I am trying to write a new ModulePass using LoopInfo analysis result, but it seems I misunderstand some concept about PassManager. Basically I want to keep LoopInfo analysis result alive. Here is an example showing the problem I encountered, assuming I already addRequired<llvm::LoopInfo>() in getAnalysisUsage: > > void

On 3/9/12 4:28 PM, Fan Long wrote: > Thank you for your quick reply. > > Actually I am using a std::map to map Function* to LoopInfo*, but that > does not help in this case. Each time I call > getAnalysis<llvm::LoopInfo>(*F), it returns the same instance of > llvm::LoopInfo, so the std::map is just mapping every function into > the same instance. It seems only the

Hi, Is it possible to recreate the LoopInfo analysis in my pass? Thanks , Vinay On Wed, Oct 3, 2012 at 2:34 PM, Chandler Carruth <chandlerc at google.com>wrote: > This is not currently supported by the LLVM pass manager system. It is a > serious deficiency that I (and others) would like to address, but it > requires significant changes to the pass manager and analysis

On Wed, Oct 3, 2012 at 2:33 AM, vinay m <mvinay05041990 at gmail.com> wrote: > Hi, > Is it possible to recreate the LoopInfo analysis in my pass? > No. You need your pass to be a FunctionPass in order to use the LoopInfo (and associated) analyses. > > Thanks , > Vinay > > On Wed, Oct 3, 2012 at 2:34 PM, Chandler Carruth <chandlerc at google.com>wrote:

Thank you for your quick reply. Actually I am using a std::map to map Function* to LoopInfo*, but that does not help in this case. Each time I call getAnalysis<llvm::LoopInfo>(*F), it returns the same instance of llvm::LoopInfo, so the std::map is just mapping every function into the same instance. It seems only the analysis result for the last function is valid, because all the result for

Dear list Has anyone got a recipie at hand to import .bil files into R? From what I understand the .bil files I got contain layered matricies which I would lke to make available in R as an array or list. GIS people seem to be familiar with the .bil format but I am not using any GIS software and would prefer to deal with the data in R. I use the latest version of R on Mac OSX 10.5.8.

Hi, Does anyone have the formula for getting logged into LinkedIn? Here''s my current attempt: require ''rubygems'' require ''mechanize'' agent = WWW::Mechanize.new home_page = agent.get(''http://www.linkedin.com'') signin_page = agent.click home_page.links.text(''Sign in'') puts "\nSIGNIN PAGE"

Hi, How to get the LoopInfo analysis in a CallGraphSCCPass ? Thanks, Vinay -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20121003/bf60da98/attachment.html>

Dear All LLVM Users,   I'm new to LLVM environment. I want to perform basic block profiling. I'm using LLVM3.1 I tried it with a simple 'c' code to find Max.No,  mentioned below. ----------------------------------------------------------------------------------------------------------------------------------------- #include <stdio.h> int main() {  unsigned int i,temp;