similar to: [LLVMdev] Retrieving Underlying Type from AllocaInst

Thanks Nick, Unfortunately, that is indeed what I asked for but not what I really am looking for. My naive approach is to store symbol table entries as Value* objects so I can allocate global variables and alloca variables and place them into the symbol table and the rest of the code didn't need to know which kind they were, in general. Loads and Stores of these types (as well as other

Curtis Faith wrote: > Is there a recommended way to retrieve the original type from an > AllocaInst object? > > For example, I am creating alloca instructions using the IRBuilder > interface like: > > alloca = builder.CreateAlloca( Type::getDoubleTy( context ), 0, > variableName.c_str() ); > > and I place the alloca into a symbol table. > > Later when I am

You should be able to use the second alternative that Nick proposed: cast<PointerType*>(pointer_value->getType())->getElementType() Reid On Fri, May 28, 2010 at 9:37 AM, Curtis Faith <curtis at curtisfaith.com> wrote: > Thanks Nick, > Unfortunately, that is indeed what I asked for but not what I really am > looking for. > My naive approach is to store symbol table

Hi, I am trying to write a simple interpreter. I am trying to generate LLVM IR for assignment operation. The code for the generation part looks like this llvm::Value* codeGenSymTab(llvm::LLVMContext& context) { > printf("\n CodeGen SymTab \n"); > Value *num = ConstantInt::get(Type::getInt64Ty(context), aTable.value, > true); > Value *alloc = new

Hi I'm getting an assert in LowerIntrinsics::InsertRootInitializers because I'm gcroot'ing an alloca to a non-pointer. I was hoping to modify InsertRootInitializers to memset the structure in the case that it's not a pointer, but I'm not sure how to. Can anyone suggest what should go at "todo; something here"? ... for (AllocaInst **I = Roots, **E = Roots +

Hi Fellows, Is there a way to allocate dynamic array within an LLVM IR file from my code generator? Say., how to create an array type with a size determined through a global variable. Symbolically, something like below: Value *sz = Mod->getOrInsertGlobal("SIZE", Int32Ty); Type *ArrayTy = ArrayType::get(FloatTy, sz)

Hi, I'm trying to add function calls in the LLVM IR using the IRBuilder class. I've read both tutorials about functions but I still get assertion errors. I allocate memory for all function arguments and pass them as explained in the tutorial. My code is (this function is supposed to add a call to f in bb at pos): void addCallSite(Function *f, BasicBlock *bb, BasicBlock::iterator pos)

CreateAlloca(Type) returns an object of type Type*, the memory that can hold an object of type Type. You probably don't want to be creating allocas just before calling the function since 1) if that call winds up in a loop they'll grow your stack frame without bound, and 2) the memory they point to is initially uninitialized. Where did the tutorial tell you to do that? In general, when I

Hi All, we have an issue with our LLVM-based JIT compiler - executing the compiled code corrupts memory (and subsequently crashes) if we alloca more than 4k of variables (more than 511 8-byte ints). The same code works on Windows 7 (32 and 64 bit), Linux, MacOS. We compile LLVM and our program with Microsoft's Visual Studio 2010. Both debug and release builds are affected. The variables

Thanks for reply. I have used AllocaInst, it's working but i think it's only for allocating some memory for new variable. And CallInst creates a call instruction. I am looking for creating a add or sub instruction. I used function instruction(), which gives me error "error: cannot allocate an object of abstract type ‘llvm::Instruction’" and also "Instruction.h:28: note:

Hi, I've been writing some optimization passes for LLVM and had good luck with the simple stuff, but I am running into all kinds of trouble trying to make copies of variables within a BasicBlock as part of a LoopPass I am trying to make copies of the variables that are in scope in the loop body like so: //Remove the existing terminator

We tested on 3.4.2 and 3.5.1. Later versions are slightly problematic to test since they don't compile with VS2010. Do you happen to know if it's fixed in one of the released versions, or if there is a workaround (chkstk?) or a bug report online? Thanks! Eph On 30.06.2015 12:58, Nicholas Chapman wrote: > It's a known issue. I believe it's fixed in trunk however. >

Can you please give an example of creating an instruction (for example add instructions with two operand a and b)? I am trying instruction() for a while, but no success yet. Duncan Sands wrote: > > Hi, > >> Actually i have to implement strength reduction, for that i have to first >> detect induction variables using ALLEN-COCKE-KENNEDY algorithm. To find >> out

Hi, I'm trying to get my head around c++ - IR - c++ API and getting used tramform manual information to code. The manual states alloca is defined for <type>. FunstionType is a type, so alloca for functionType should be possible? Not? If we have a valid Module *m we can get an allocate instruction allocating space for a non-argumented function as follows: AllocaInst* pa2 = new

help__me_please wrote: > Can you please give an example of creating an instruction (for example add > instructions with two operand a and b)? I am trying instruction() for a > while, but no success yet. > You need to look for the appropriate subclass of llvm::Instruction and find the method for creating a new instruction. The method is usually a static method and takes arguments

i am using llvm , i did this if ( AllocaInst *allocInst = dyn_cast<AllocaInst>(&*bbit)){ PointerType *p = allocInst->getType(); if ( p->getElementType()->isPointerTy()){ StringRef name = allocInst->getName();

I want to know the type of pointer . for example if we have int *p, struct node *w char *q then i want int for p,char for q , struct node for w. any help would be appreciated. -- View this message in context: http://llvm.1065342.n5.nabble.com/How-To-Get-The-Name-of-the-type-the-popinter-is-pointing-to-tp49121.html Sent from the LLVM - Dev mailing list archive at Nabble.com.

Hi, I'm trying to replace pointer typed alloca instructions to allocate a vector of pointers. The idea is to change from [1] to [2]: [1]: %0 = alloca i<N>* [2]: %0 = alloca <3 x i8*> I did it this way: - first, create and insert [2] (for debug purpose, not necessary to insert) - mutate type so that replaceAllUsesWith can be called in a correctly typed way - replace all

Dear All I'm trying to create storeInst using StoreInst *SI = new StoreInst(val, AI, BB); AI is an alloca instruction previously created, BB is the basicBlock I want to put instructionsi in. Val is the value to store. I've created val from a genericValue like this: Value* val = ConstantInt::get(getGlobalContext(), Result.IntVal); Result is the genericValue However I keep getting

2009/8/22 Bill Wendling <isanbard at gmail.com>: > I think you might have to provide an empty list if your function doesn't > take parameters. Maybe using an irbuilder would help? It does take one parameter. Here's the important bits: // My Function extern "C" void print(double X) { printf("%f\n", X); } // Args type std::vector<const Type*>