search for: bitcastinsts

I am trying to change this define void @main(float* noalias %arg0, float* noalias %arg1, float* noalias %arg2) { entrypoint: %0 = bitcast float* %arg1 to <4 x float>* intothis define void @main(float* noalias %arg0, float* noalias %arg1, float* noalias %arg2) { entrypoint: %0 = getelementptr float* %arg1, i64 0 %1 = bitcast float* %0 to <4 x float>* I must be close but

I am trying to dyn_cast a Value* to a BitCastInst. The dump of what I want casted is "i8* bitcast (i32 (i32)* @f1 to i8*)", so it is a BitCastInst. For someone my dyn_cast always fails, does anyone see why? arg->dump(); BitCastInst *bitcast = dyn_cast<BitCastInst>(arg); assert(bitcast != NULL); Thank you

My pass is looking at StoreInsts acting on global variable that happen to be function pointers. From these StoreInsts I would like to get useful information(the function used if a direct assignment, function pointer used, etc) from the getValueOperand() method. Looking through several examples I see that this can return several things like: GlobalVariable, Function, LoadInst or BitCastInst

Hi folk, I get the following stack trace and do have any clue how to fix the problem. 0 opt 0x087ecc99 1 opt 0x087ed265 2 0xb7f6a400 __kernel_sigreturn + 0 3 opt 0x086d4198 llvm::LeakDetector::addGarbageObject(llvm::Value const*) + 29 4 opt 0x0872945f llvm::Instruction::Instruction(llvm::Type const*, unsigned int,

Hi, I am writing an alias profiler using the points-to relation. For this I'm inserting a function call of external function with the following type profile(int,int,int,void*,void*,...) I'm trying to pass the dereferenced pointer's memory address and the address of the location who are in alias set of the pointer. For this i'm using BitCastInst BitCastInst *init1= new

Hi there, I'm having a bit of a problem while trying to create BitCast instructions. Well, first, I have some very generic functions written in C, for which I would like to make calls on another C file I'm playing with using an LLVM Pass. The simplified signature of two of these functions can be seen below: void write(void* data, unsigned b); // write b bytes starting, at address

Ah! I get it now. Thanks a lot ! I changed it to BitCastInst(AI,VoidPtrTy,"",j); And now I am getting the following error :(. I have been stuck with this error before also. I know I am missing out something silly. What is the cause of this error and Please let me know how to fix it. /home/bhavani/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:1130: llvm::SDOperand

I'm trying to create a ConstantArray(whose contents will be of types Function*, GlobalVariable *) so I can immediately create a new GlobalVariable(that will be in its own section). I'm doing this so I have these address stored. In order to create this ConstantArray I need a valid ArrayType, but I'm not sure what to use for the element type. I want this to be done at compile time, so I

I'm a bit confused. For the Type did you mean something like: ArrayType *type = ArrayType::get(Type::getInt8PtrTy(M.getContext()), 4); This does not work, it gives me ""Wrong type in array element initializer" at runtime. Also it doesn't look like ConstantExpr inherits ConstantArray, so I'm not sure how I could use this instead. Thanks On Thu, Oct 20, 2011 at

ok.. So I am trying out what you have suggested. I have written the below code which basically tries to write the constant 10 to a file. myprint is a function pointer to a function which takes char * parameter and writes it to file. Value *Ten = ConstantInt::get(Type::Int32Ty, 10); const Type *VoidPtrTy = PointerType::getUnqual(Type::Int8Ty); AllocaInst *AI = new AllocaInst(Type::Int32Ty); Value

So, you need to bitcast `pinst` to a pointer to Vector of double, since it (I hope for your sake) is a pointer to integer. What you are trying to do is bitcast a pointer into a vector, which probably will lead to an assert or "bad code that doesn't work". -- Mats On 15 April 2015 at 21:57, zhi chen <zchenhn at gmail.com> wrote: > What I want to do is to change the pInst

On 10/20/11 11:34 AM, ret val wrote: > I'm a bit confused. For the Type did you mean something like: > ArrayType *type = ArrayType::get(Type::getInt8PtrTy(M.getContext()), 4); I assume that creates an ArrayType of 4 elements whose elements are pointers to 8-bit values. If so, then this is what I meant. > This does not work, it gives me ""Wrong type in array

Thanks Nick! ok. I ran through the verifier and this is the issue: verifying... Instruction does not dominate all uses! %tmp3 = add i32 %b, %a ; <i32> [#uses=2] store i32 %tmp3, i32* %0, align 4 Broken module found, compilation aborted! add is existing instruction in function. store is the instruction I have added to the function. How do I fix this now :(? Thanks, Bhavani --- On Mon,

Hi, i have the following code: define internal %"struct.dexter::ConditionConstant"* @_ZN6dexter18BinaryConditionAdd8evaluateEv5(%"class.dexter::BinaryConditionAdd"*) { entry: %1 = getelementptr inbounds %"class.dexter::BinaryConditionAdd"* %0, i32 0, i32 0, i32 1 %2 = load %"class.dexter::BaseCondition"** %1, align 8 %3 = bitcast

Now I have an address that present in a unsigned long address like the following format: Value* addr = CONST(0xc0008000) But I do not know how to read the data from the above addr varaible. I tried the following three kind of code: 1. Code: Value* addr = CONST(0xc0008000); Value* data = new LoadInst(addr, "", false, bb); Error: Segmentation fault 2. Code(

Does anyone know how to instrument *double* to <2 x doulbe>**, e.g., 2.2 --> <2.2, 2.2>? For example, I want to change the following IR code %arrayidx1 = getelementptr inbounds [100 x double]* @main.B, i32 0, i32 %i.021 %1 = load double* %arrayidx1, align 4, !tbaa !0 to: %arrayidx1 = getelementptr inbounds [100 x double]* @main.B, i32 0, i32 %i.021 %1 = bitcast double* %arrayidx1

I noticed a strange behavior when a non-prototyped user-defined function is called. E.g. for the following test.c code segment: void foo(void); void bar(void); void foo(void){ bar(); } void bar(void){ printf("inside bar()"); } LLVM-GCC 2.7 -O0 will generate the following code for foo(), which is all fine. define void @foo() nounwind { entry: * call void @bar() nounwind*

Hi all, Usually if we want to get the called Function we can directly use CallInst->getCalledFunction(), however, today i encounter an unusual CallInst as follows: %call11 = call double (...)* bitcast (double ()* @quantum_frand to double (...)*)() the original C source involve type cast: float u,v; extern double quantum_frand(); u = 2 * quantum_frand() - 1; v = 2 * quantum_frand() -

When I'm iterating through I only directly add BitCastInsts and a single CallInst(Im assuming the functions I also created are elsewhere). Unfortunately it doesnt look like theres is a good way to convert between the the iterator I and a CallInst *. Am I missing something? Thanks On Mon, Aug 29, 2011 at 3:59 PM, David Blaikie <dblaikie at gmail.com>...

> Hi Philip, > > > I think after reading your link I'm actually more confused. This might just be a wording problem, but let me ask a couple of clarifying questions. > > Sorry about that :( Every time I explain this I get slightly more embarassed because it is indeed weird and ugly (but was certainly the least ugly solution). > > > 1) After compiling the code