search for: arg_begin

Hi, I am upgrading my project from 3.7 to 3.8. I find that following code used to compile in 3.7 but doesn't in 3.8 and I can't understand why. llvm::Function *mainFunc = ...; auto argiter = mainFunc->arg_begin(); llvm::Value *arg1 = argiter++; arg1->setName("obj"); But if I change the code to following it compiles: auto argiter = mainFunc->arg_begin(); llvm::Value *arg1 = &(*argiter); arg1->setName("obj"); As far as I can tell the first version should have worked as w...

in the tutorial of official llvm doc, chapter 3, it deals with arguement of function as follow: for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size(); ++AI, ++Idx) { AI->setName(Args[Idx]); // NamedValues is map<string, Value*> NamedValues[Args[Idx]] = AI; and when it try to get the value of arguement, it simply does: Value *VariableExprAST::Codegen() { Value *V = NamedValues[Name]; return...

...DoubleTy(Context), argslist, false); Function *fun= cast<Function> ( module->getOrInsertFunction("fun", funType)); BasicBlock * block = BasicBlock::Create(Context, "mainBlock", fun); IRBuilder<> builder(block); Function::arg_iterator itr = fun->arg_begin(); builder.CreateLoad(itr); Value *result = ConstantFP::get(Type::getDoubleTy(getGlobalContext()), 1.0); builder.CreateRet(result); vector<GenericValue> args; ExecutionEngine *e = EngineBuilder(module).create(); outs()<<*module<<"\n"; outs(...

hi On Sun, Apr 22, 2012 at 8:36 PM, Jianfei Hu <hujianfei258 at gmail.com> wrote: > in the  tutorial of official llvm doc, chapter 3, it deals with arguement of > function as follow: > > for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size(); >        ++AI, ++Idx) { >     AI->setName(Args[Idx]); > >     // NamedValues is map<string, Value*> >     NamedValues[Args[Idx]] = AI; > > and when it try to get the value of arguement, it simply does: > > Value *VariableExprAST::Codegen()...

...foo, so the C code would look like: foo(myarg1, myarg2, ptr); free(ptr); The problem occurs when I grab the arg from the free function and try to pass it to foo... if (isCallToFree(&I)) { Value* P; if (Function *F = I.getCalledFunction()) { Function::arg_iterator ait = F->arg_begin(); if (ait) { P = &(*ait); } createCallInst(mem_fcall, &I, 3, getOpcodeValue(I), getInstrIDValue(), P); } } createCallInst is my own wrapper. The error thrown during the pass is: "Referring to an argument in another function!"...

...t; v_params; v_params.push_back(ptrType); /* Shadow */ v_params.push_back(ptrType); /* New Value */ v_params.push_back(ptrType); /* Pointer */ ArrayRef<Type *> a_params(v_params); Where the assignment will look something like this: Value *val = newFunc->arg_begin(); Value *ptr = ++(newFunc->arg_begin()); new StoreInst(val, ptr, block); But the only way I know to call is it is like this: vector<Value *> v_args; v_args.push_back(shadow); v_args.push_back(store->getValueOperand()); v_args.push_back(store->getPointerOpe...

...nctionType *NewTy) const { Function *New = Function::Create(NewTy, Old.getLinkage(), "", &M); New->setAttributes(Old.getAttributes()); New->setCallingConv(Old.getCallingConv()); // Map old arguments to the new arguments. ValueToValueMapTy VMap; for (auto OldFI = Old.arg_begin(), OldFE = Old.arg_end(), NewFI = New->arg_begin(); OldFI != OldFE; ++OldFI, ++NewFI) { Argument &OldA = *OldFI; Argument &NewA = *NewFI; NewA.setName(OldA.getName()); VMap[&OldA] = &NewA; } SmallVector<ReturnInst *, 16> Returns; Cl...

...alse); // Create the new function body and insert it into the module... Function *NF = Function::Create(NFTy, Fn->getLinkage()); NF->copyAttributesFrom(Fn); Fn->getParent()->getFunctionList().insert(Fn, NF); NF->takeName(Fn); for (Function::arg_iterator AI=F.arg_begin(), AE=F.arg_end(), NAI=NF->arg_begin(); AI != AE; ++AI, ++NAI) { NAI->takeName(AI); } // Since we have now create the new function, splice the body of the old // function right into the new function, leaving the old rotting hulk of the // function empty....

this is definitely a bug in AA. 225 for (auto I = CS2.arg_begin(), E = CS2.arg_end(); I != E; ++I) { 226 const Value *Arg = *I; 227 if (!Arg->getType()->isPointerTy()) -> 228 continue; 229 unsigned CS2ArgIdx = std::distance(CS2.arg_begin(), I); 230 auto CS2ArgLoc = MemoryLocation::getForArgument(CS2, CS2...

Hi all, I am experimenting to run a pass inherited from CallGraphSCCPass. In the pass, I iterate all functions in a SCC. In each iteration, I access all arguments of a function in the following way: Function::arg_iterator PI = fun->arg_begin(), PE = fun->arg_end(); ... I have no trouble with building. However, I am troubled with "segmentation fault" when I run the pass via: opt -load ../../build-llvm/Debug/lib/LLVMRCI.dylib -rci < a.out.bc The error message is attached later. So, am I wrong with accessing func...

...parameters), but those seem to be quiescent at the time. Any ideas? Thanks, Marcel ------- my weird code.m ------------ -argumentAtIndex:(int)argIndex { Argument *ArgX; if ( argIndex < numArgs ) { int i; ArgX = ((Function*)function)->arg_begin(); for (i=0 ;i<argIndex;i++) { ++ArgX; } [NSString stringWithFormat:@"get argument[%d/%d]= %x",argIndex,numArgs,ArgX]; // with this in place, it doesn't crash return [MPWLLVMValue...

...e. Any ideas? > > Thanks, > > Marcel > > > ------- my weird code.m ------------ > -argumentAtIndex:(int)argIndex > { > Argument *ArgX; > if ( argIndex < numArgs ) { > int i; > ArgX = ((Function*)function)->arg_begin(); > for (i=0 ;i<argIndex;i++) { > ++ArgX; > } > > [NSString stringWithFormat:@"get argument[%d/%d]= > %x",argIndex,numArgs,ArgX]; // with this in place, it doesn't > crash >...

...ons of them, but memory locations expect to be one > thing, not a group of things, etc). > > > > > On Mon, Aug 29, 2016 at 8:58 AM, Daniel Berlin <dberlin at dberlin.org> > wrote: > >> this is definitely a bug in AA. >> >> 225 for (auto I = CS2.arg_begin(), E = CS2.arg_end(); I != E; >> ++I) { >> 226 const Value *Arg = *I; >> 227 if (!Arg->getType()->isPointerTy()) >> -> 228 continue; >> 229 unsigned CS2ArgIdx = std::distance(CS2.arg_begin(), I); >> 230 au...

...rg1, myarg2, ptr); > free(ptr); > > The problem occurs when I grab the arg from the free function and try > to pass it to foo... > > if (isCallToFree(&I)) { > Value* P; > if (Function *F = I.getCalledFunction()) { > Function::arg_iterator ait = F->arg_begin(); You want to look at the operands of the call/invoke/free instruction, not the arguments of the function being called. So if you're sure it's a call or invoke (not a 'free' instruction), try something like this: #include "llvm/Support/CallSite.h" // ... Call...

...::Create(NewTy, Old.getLinkage(), "", &M); >> New->setAttributes(Old.getAttributes()); >> New->setCallingConv(Old.getCallingConv()); >> >> // Map old arguments to the new arguments. >> ValueToValueMapTy VMap; >> for (auto OldFI = Old.arg_begin(), OldFE = Old.arg_end(), >> NewFI = New->arg_begin(); >> OldFI != OldFE; ++OldFI, ++NewFI) { >> Argument &OldA = *OldFI; >> Argument &NewA = *NewFI; >> NewA.setName(OldA.getName()); >> VMap[&OldA] = &NewA; &g...

...alse); // Create the new function body and insert it into the module... Function *NF = Function::Create(NFTy, Fn->getLinkage()); NF->copyAttributesFrom(Fn); Fn->getParent()->getFunctionList().insert(Fn, NF); NF->takeName(Fn); for (Function::arg_iterator AI=F.arg_begin(), AE=F.arg_end(), NAI=NF->arg_begin(); AI != AE; ++AI, ++NAI) { NAI->takeName(AI); } // Since we have now create the new function, splice the body of the old // function right into the new function, leaving the old rotting hulk of the // function empty....

...ValueToValueMapTy& ValueMap) { vector<const Type*> ArgTypes; // The user might be deleting arguments to the function by specifying them in // the ValueMap. If so, we need to not add the arguments to the arg ty vector // for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end(); I != E; ++I) if (ValueMap.count(I) == 0) // Haven't mapped the argument to anything yet? ArgTypes.push_back(I->getType()); // Create a new function type... FunctionType *FTy = FunctionType::get(F->getFunctionType()->getReturnTyp...

Hi all, I have encountered a weird case that I cannot understand. Inside the visitStoreInst I have a reference (F) to the function png_set_mem_fn. If I do F->dump() i can set the IR of that function correctly e.g.: ; Function Attrs: nounwind uwtable define void @png_set_mem_fn(%struct.png_struct_def.68* noalias %png_ptr, i8* %mem_ptr, i8* (%struct.png_struct_def.68*, i64)* %malloc_fn, void

I'm now writing a pass and I wanna ask a question about how to duplicate the function and add duplicated arguments in llvm, for example: func(int a, char *b) -> func(int a, char *b, int a1, char *b1) I'm now stuck at using "getOrInsertFunction" and how to handle "getArgumentList", please share your opinion, thanks a lot! James

...because I compiled all instruction-functions to an LLVM Module and loaded it. llvm::Function *machine_instr = llvm_execution_engine->FindFunctionNamed(instruction_function_name); // Prepare for setting the parameters of a call instruction llvm::Argument *llvm_arg = machine_instr->arg_begin(); // Add a pointer to the machine-struct as a first parameter to every instruction-function call. // This should be the same pointer that is passed at runtime to the predicate-function (llvm_function) llvm_arg++ = ??; // pseudo: for any additional parameters of the machine instru...