similar to: [LLVMdev] callgraph utility with opt

Hello All, I am currently working on a project which requires me to generate a .bc file for given .c file and open the .bc file to identify various functions and the caller callee relationship amongst them. The end goal is to generate a type of callgraph for all the functions present in the original C code. I am quite new to llvm and will really appreciate if I can be provided some pointers. I am

I am finding some weird behavior in the CallGraph, and am not sure what am I doing wrong. When trying to traverse nodes in the CallGraph I get stuck in nodes representing external functions. Take the following code: ----- #include <stdio.h> int main() { printf( "Hello World!\n" ); } ----- If I try to traverse the CallGraph using the following code: ----- CallGraph CG

Hello, I want an instance of CallGraph in my pass. By looking at -dot-callgraph source, I've tried something like this: CallGraphWrapperPass *CGWP = new CallGraphWrapperPass(); PM.add(CGWP); CallGraph *CG = &CGWP->getCallGraph(); PM.add(new MyPass(CG)); I get the following error: /home/riyad/installs/llvm-3.7.0/include/llvm/PassSupport.h:95:38: error: no matching constructor for

Hello: We are working with LLVM-3.1 and we have a problem.This is the code we have executed: virtual void getAnalysisUsage( llvm::AnalysisUsage & info ) const { info.addRequired<CallGraph>(); ... } ... virtual bool runOnModule( Module & M ) { ... CallGraph &CG = this->getAnalysis<CallGraph>(); CallGraphNode *cgn; unsigned nref;

Dear everyone, I want to traverse call graph, but I have some trouble . In my pass MyPass which need to traverse call graph, I firstly added the CallGraph analysis to the pass requirements by *AU.addRequired<CallGraph>();* My pass MyPass then will be added to a pass manager by *manager.add(new MyPass());* and then I want to traverse the call graph such as: CallGraph CG =

I recall having a similar problem while coding my own special-purpose "opt". My guess: try adding the following lines before your pass is inserted into the PassManager: PassRegistry &Registry = *PassRegistry::getPassRegistry(); initializeIPA(Registry); You might require other library initializations. Have a look at the "opt" source code. On 02/12/13 10:36,

Hi all, I want to find all the called functions in each function, thus I iterate the calledFunctions of each CallGraphNode in CallGraph as follow: for (CallGraph::iterator it = CG->begin(); it != CG->end(); ++it) { CallGraphNode* node = it->second; for (CallGraphNode::iterator it2 = node->begin(); it2 != node->end(); ++it2) { Function* calledFunc =

Михаил wrote: > It is ModulePass with AnalysisUsage of CallGraph Ah, then you'll need to update the CallGraph first. Use "CG.removeFunctionFromModule(F);" before deleting it. Nick > Yours sincerely, > Kadysev Mikhail > > 22.04.2012, в 5:20, Nick Lewycky написал(а): > >> Михаил wrote: >>> Thanks, but I replaceAllUsesWith() - works well, but I still

Hi there, I'm currently writing an analysis (for now) pass for LLVM that kind of need some information from the CallGraph of the program. This info would be extremely easy to get if I could build the DominatorTree information about the CallGraph. I even checked out and saw the declarations of GraphTraits templates for CallGraph and CallGraphNode, which might indicate that all algorithms that

Dear Ashutosh, Thank you, I can handle some indirect callSites by getFunction() of InvokInst and CallInst. However, when I am handling C++ programs, I found the calls of member functions are converted to some strange indirect calls. For example: table->truncate(sysTransaction); // from mysql are translated to the next complex llvm IR: _ZN8Database20getSystemTransactionEv.exit: ;

So, I won't know the called function statically, Right? -------------------------------------------- Qiuping Yi Institute Of Software Chinese Academy of Sciences On Wed, Jan 20, 2016 at 2:24 PM, Nema, Ashutosh <Ashutosh.Nema at amd.com> wrote: > Typically for C++ virtual function you will see an indirect callSite > (unless not de-virtualized). > > > > Regards, >

On Fri, 29 Sep 2006, Vikram Adve wrote: > On Sep 29, 2006, at 2:05 PM, Domagoj Babic wrote: >> Check out scc_* iterators. Also note that the call graph >> is not aware of the indirect calls, so you will need to write your >> own CG implementation if you need to handle function pointers >> soundly. > Chris, is this true? If so, it seems like a bad property for the

Hi All, I tried to use CallGraph in llvm by adding "AU.addRequired<CallGraph>();" in getAnalysisUsage function. But it reports an error: include/llvm/PassAnalysisSupport.h:56:39: error: ‘ID’ is not a member of ‘llvm::CallGraph’ return addRequiredID(PassClass::ID); How to use it correctly? Thanks, Haopeng

Devang Patel wrote: > On Mar 20, 2009, at 8:13 AM, Amr Yehia wrote: > > >> Dear all, >> >> I am having a problem adding a MemoryDependenceAnalysis pass to a >> Module >> Pass i created, it gives me the following error when i add >> (Info.addRequired<MemoryDependenceAnalysis>();) it in the >> getAnalysisUsage(AnalysisUsage &Info)

On Fri, Aug 17, 2012 at 4:23 PM, Jianfei Hu <hujianfei258 at gmail.com> wrote: > Hello, > I want to traverse CallGraph > > code segment: > > > virtual void getAnalysisUsage(AnalysisUsage &AU) const > { > AU.addRequired<CallGraph>(); > } > > virtual

Hello, I want to traverse CallGraph code segment: virtual void getAnalysisUsage(AnalysisUsage &AU) const { AU.addRequired<CallGraph>(); } virtual bool runOnModule(Module &F) { CallGraph &g = getAnalysis<CallGraph>(); for ( CallGraph::iterator i = g.begin(); i != g.end(); i++) { errs()<<"-----------------\n";

Hi all, I have been trying to build a loop nesting analysis which works interprocedurally. In order to find the functions called inside a given loop, I am traversing the Instructions into the BasicBlock's that conform a Loop, and applying the code that CallGraph construction uses: ------ extract from CallGraph.cpp : 144 // Look for calls by this function. for (Function::iterator BB =

Hello, I have a simple program using aliases to functions, and it seems that the CallGraph doesn't follow these aliases. Here is the example: @alias = alias void ()* @realfunc define void @realfunc() { entry: ret void } define i32 @main() { entry: call void @alias() ret i32 0 } ******* Output of the CallGraph ******* Call graph node <<null

I'm not sure about the old pass manager, but I think the new pass manager solves this issue. See llvm::updateCGAndAnalysisManagerForFunctionPass where it updates the call graph to be in sync with edges deleted by function passes. So I suspect the right fix is to use the new pass manager. -- Sanjoy On Mon, May 7, 2018 at 7:32 AM, Björn Pettersson A via llvm-dev <llvm-dev at

no .. i am calling a function pass from a module pass, adding other function passes to my module pass works, but when i try to add MemoryDependenceAnalysis it gives error I want to report a bug but i don't know if this is a real bug or i am doing something wrong, knowing that i am adding other function passe to my module pass and it works fine. the error i get: adding callgraph pass ...