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Hello, In my module I have functions: a b c f3 calls "a" f2 calls "a" f1 calls "b" I would like to modify a CallInst in the f2. Now it calls "a", but I want changed it to "c". When loop over the instructions of the f2, I can get a CallInst to be modified, then I use "setName" to changed it to "c". Problem is, since

You are probably calling setName() on the called Function, which in-turned renamed the called Function instead of replacing the called function. Depending on your use-case, if you are certain that you only need to modify CallInsts, then you could simply call CallInst::setCalledFunction , otherwise it’s probably wiser to use CallSite as a wrapper for both CallInst and InvokeInst. Do note, however, that no matter which solution you end up using, you’ll need to update the FunctionType as well Zhang > On 23 Mar 2018, at 23:07, Dávid Bolvanský via llvm-dev <llvm-dev at lists...

Hi, I am working on a pass to convert lib calls to intrinsic calls as discussed here: http://lists.cs.uiuc.edu/pipermail/llvmdev/2013-January/058507.html In my first attempt I created a FunctionPass that uses CallInst::setCalledFunction to replace the callee with the appropriate intrinsic (using Intrinsic::getDeclaration). After the pass runs I get an assertion from CallGraphSCCPass: clang-3.3: /home/predmond/src/ssg_llvm/llvm/lib/Analysis/IPA/CallGraphSCCPass.cpp:338: bool {anonymous}::CGPassManager::RefreshCallGraph(llvm::C...

...{}; }; int main() { A *a = new B(); a->test(1); } We have call site CS: "a->test(1);". CS.getCalledFunction() - return NULL, so we can say that this call site is virtual. My optimization determines, that in this call site B::test() should be called. I've tried to use CSn.setCalledFunction(F) (where F is B::test()), but I've got this: Check function __cxa_pure_virtual Call parameter type does not match function signature! %6 = load %class.A** %a, align 4 %class.B* call void @_ZN1B4testEi(%class.A* %6, i32 1) Ok! I've tried to change the first %class.A %6 to %class.B...

...ts. InlineFunction() does not inline this because call->getCalledFunction() returns 0. call->getCalledValue() returns a cast ConstantExpr. The called Function * is available at (leaving out necessary casts and checks) call->getCalledValue()->getOperand(0). I've tried using call->setCalledFunction(), but that isn't successful either, I'm guessing because the types don't match. If I don't strip the module, the linker produces an ordinary call to the target function, with no bitcast because both formal arg and passed arg have the same opaque struct name, and InlineFunction(...

Hello; I am trying to clone some call instructions in the IR and then set the call destination of those call instructions to my own library functions that happens to have the same arguments and return types of the original callee. It works perfectly for direct calls using setCalledFunction(). But when the function call is indirect, is there a way to set the callee? Something like setCalledValue()? How do I achieve this? Any help will be appreciated, thanks a lot! -- Arnamoy Bhattacharyya Athabasca Hall 143 Department of Computing Science - University of Alberta Edmonton, Albe...

...!dbg !963916 { ... I wrote a function pass and found the mentioned function pointer call (here, stored in "CallInstr") and set the call target as follows: ... Module *theModule = F.getParent(); Function *targetFunc = theModule->getFunction("demux_lavf_control"); CalIInstr->setCalledFunction(targetFunc); ... "F" is the function containing the call. But it leads to the following error: ... Call parameter type does not match function signature! %struct.demuxer* %0 %struct.demuxer.2657* %10 = tail call i32 @demux_lavf_control(%struct.demuxer* nonnull %0, i32 %1, i8* %2) #7,...

...ent. If a libcall can be correctly turned into a target processor instruction, then at some point that conversion has to happen. Thus the recognition of certain libcalls, and their conversion into a SDNode. Ciao, Duncan. > > In my first attempt I created a FunctionPass that uses CallInst::setCalledFunction to replace the callee with the appropriate intrinsic (using Intrinsic::getDeclaration). > > After the pass runs I get an assertion from CallGraphSCCPass: > > clang-3.3: /home/predmond/src/ssg_llvm/llvm/lib/Analysis/IPA/CallGraphSCCPass.cpp:338: bool {anonymous}::CGPassManager::Refres...

...> InlineFunction() does not inline this because call->getCalledFunction() returns 0. call->getCalledValue() returns a cast ConstantExpr. The called Function * is available at (leaving out necessary casts and checks) call->getCalledValue()->getOperand(0). I've tried using call->setCalledFunction(), but that isn't successful either, I'm guessing because the types don't match. > > If I don't strip the module, the linker produces an ordinary call to the target function, with no bitcast because both formal arg and passed arg have the same opaque struct name, and Inline...

...arameter's type and even the same variable's name in the IR. So after calling the *llvm::LinkerlinkModules* function, I did: 1. First attempt: 1. llvm::CallInst *callOInst = static_cast<llvm::CallInst*>(oInst); // I cast the* oInst* to a llvm::CallInst 2. callOInst->setCalledFunction(nFunc); // now *oInst* should call nFunc Error: Call parameter type does not match function signature! %0 = load i32, i32* %a, align 4 i32 %call1 = call i32 @foo3(i32 %0, i32 %1) So even though the parameters are the same type, and defined identically in both modules, the *p(oInst)* apparently...

...IR. >> >> So after calling the *llvm::LinkerlinkModules* function, I did: >> >> 1. First attempt: >> >> 1. llvm::CallInst *callOInst = static_cast<llvm::CallInst*>(oInst); >> // I cast the* oInst* to a llvm::CallInst >> 2. callOInst->setCalledFunction(nFunc); // now *oInst* should call >> nFunc >> >> Error: >> Call parameter type does not match function signature! >> %0 = load i32, i32* %a, align 4 >> i32 %call1 = call i32 @foo3(i32 %0, i32 %1) >> >> So even though the parameters are the same...

...function, I did: >>>> >>>> 1. First attempt: >>>> >>>> 1. llvm::CallInst *callOInst = >>>> static_cast<llvm::CallInst*>(oInst); // I cast the* oInst* to a >>>> llvm::CallInst >>>> 2. callOInst->setCalledFunction(nFunc); // now *oInst* should call >>>> nFunc >>>> >>>> Error: >>>> Call parameter type does not match function signature! >>>> %0 = load i32, i32* %a, align 4 >>>> i32 %call1 = call i32 @foo3(i32 %0, i32 %1) >>>...

...> InlineFunction() does not inline this because call->getCalledFunction() returns 0. call->getCalledValue() returns a cast ConstantExpr. The called Function * is available at (leaving out necessary casts and checks) call->getCalledValue()->getOperand(0). I've tried using call->setCalledFunction(), but that isn't successful either, I'm guessing because the types don't match. >> >> If I don't strip the module, the linker produces an ordinary call to the target function, with no bitcast because both formal arg and passed arg have the same opaque struct name, a...

...t;>> 1. First attempt: >>>>>> >>>>>> 1. llvm::CallInst *callOInst = >>>>>> static_cast<llvm::CallInst*>(oInst); // I cast the* oInst* to a >>>>>> llvm::CallInst >>>>>> 2. callOInst->setCalledFunction(nFunc); // now *oInst* should >>>>>> call nFunc >>>>>> >>>>>> Error: >>>>>> Call parameter type does not match function signature! >>>>>> %0 = load i32, i32* %a, align 4 >>>>>> i32 %cal...

...;>>>>> >>>>>>>> 1. llvm::CallInst *callOInst = >>>>>>>> static_cast<llvm::CallInst*>(oInst); // I cast the* oInst* to >>>>>>>> a llvm::CallInst >>>>>>>> 2. callOInst->setCalledFunction(nFunc); // now *oInst* should >>>>>>>> call nFunc >>>>>>>> >>>>>>>> Error: >>>>>>>> Call parameter type does not match function signature! >>>>>>>> %0 = load i32, i32* %a, a...

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

...t;>>>>>>> 1. llvm::CallInst *callOInst = >>>>>>>>>> static_cast<llvm::CallInst*>(oInst); // I cast the* oInst* >>>>>>>>>> to a llvm::CallInst >>>>>>>>>> 2. callOInst->setCalledFunction(nFunc); // now *oInst* should >>>>>>>>>> call nFunc >>>>>>>>>> >>>>>>>>>> Error: >>>>>>>>>> Call parameter type does not match function signature! >>>>>>&g...