similar to: [LLVMdev] use function address as global variable initializer

Hi, Suppose I have a pointer to "something" (a structure I defined) and I want to pass the pointer to a generic function, that gets a 64-bit address pointer. How do I do that? For instance: The function is: void Foo (void *); I get the specific pointer using getPointerOperand() on a store instruction that store to it: inst->getPointerOperand()->getType() Now I want

Hi Nabila, > where did the "noalias" attribute and "tail call" (rather than "call") come > from? Are you setting these yourself or running some optimization pass after > your pass? > > > i have written a module pass and i have compiled it and then you didn't answer my questions, you just repeated what you said before. Ciao,

Hello LLVMDev List, It's my first time sending a message to the List - I have been working on a tool for my research project using LLVM. Thanks for your awesome work! I have come across some bytecode like the following with an GetElementPtr instruction in brackets: Bytecode:%3 = call i32 @_Z4funcPKc(i8* getelementptr inbounds ([5 x i8]* @.str2, i32 0, i32 0)) C++ code:func("bleh");

Andrew Haley <aph at redhat.com> writes: > Óscar Fuentes wrote: >> The following message is a courtesy copy of an article >> that has been posted to gmane.comp.compilers.llvm.devel as well. >> >> Andrew Haley <aph at redhat.com> writes: >> >>> This is x86_64. I have a problem where an absolute memory load >>> >>> define

2011/4/26 Duncan Sands <baldrick at free.fr> > Hi Nabila, > > Now when i tried this pass an error says: >> Wrong type for attribute noalias >> tail call void @consume(i32 noalias 3, i32* @y) nounwind >> >> >> noalias is only for arguments of pointer type. You probably meant it >> to >> be on the second argument

I am primarily interested in phi nodes and their induction variables, in ValueTracking file there is an analysis of them, but if the upper bound is inf, it is not working? 2017-08-07 11:41 GMT+02:00 Anastasiya Ruzhanskaya < anastasiya.ruzhanskaya at frtk.ru>: > So, it is not supported to determine by this instruction : %cmp = icmp slt > i32 %i.03, 99, > that %i.03 = phi i32 [ 0,

Hi all, I am doing a project that requires counting the number of uses of a value only in all dominated blocks in a function. I checked the manual for llvm::User class, but only get this unsigned <http://llvm.org/test-doxygen/api/classunsigned.html> getNumUses <http://llvm.org/test-doxygen/api/classllvm_1_1Value.html#a380559e99b47632a34f74de7c1d03cc0> () const This gives me all the

Hi, I was trying to create a new *Store* instruction and inserting it to LLVM IR (.ll) file. I found the following constructor in LLVM Manual: StoreInst::StoreInst <http://llvm.org/docs/doxygen/html/classllvm_1_1StoreInst.html#aa2a72f9a51b317f5b4ab8695adf59025> (Value <http://llvm.org/docs/doxygen/html/classllvm_1_1Value.html> * Val, Value

Hi all, How can i find the instruction that uses the result of a load instruction. For example: %16 = load i32, i32* %ptr %add = add i32 4, %16 In this case, i would like to get the add instruction. Best, Mo -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160204/bdef6f63/attachment.html>

hi, i am building selectionDAG by my own code, but got a assertion fail said "SrcValue is not a pointer?". but since the comment above the SrcValueSDNode said: "SrcValueSDNode - An SDNode that holds an arbitrary LLVM IR Value." why the llvm value of SrcValueSDNode must be with PointerType? is that assertion necessary? thanks a lots. regards --ether

I am trying to generate LLVM code that references a global array. Unfortunately, while I am generating the code I do not know the final length of the array, as I add elements to it as my compiler goes along. What is the best way to do this in LLVM? Ideally, I would be able to define the GlobalVariable array and change its length later on. I would love for it to have the correct length so I

Hi, I want to use llvm::Value::print to output the assembly strings for llvm::Instructions inside a rather large llvm::Module (linked module with lots of types/...). I started with plain ::print and switched over to http://llvm.org/docs/doxygen/html/classllvm_1_1Value.html#a04e6fc765eeb0c4c90ac5d55113db116 with a ModuleSlotTracker I pass in myself to avoid some complexity. Still now I have

Hello everyone, is there any way to replace an instruction inside LLVM that is more elegant than creating a new one, replacing uses and deleting the old one if I only want to modify the type? It is generally not a big deal, but the issue gets really messy if I am in the middle of iterating over uses and start deleting some of them... I hope I could describe my problem well enough ;) Regards,

Thank you! I wanted to use the right part of the instruction , %a = alloca i32, align 4 - %a here , but I don't quite understand the difference between Instruction object and Value object of a, which is used further , and in this case : %1 = alloca i32, align 4 - I also wanted to use %1 and in this case the only possibility is Instruction object. 2017-07-20 15:32 GMT+02:00 Evgeny Astigeevich

Óscar Fuentes wrote: > Andrew Haley <aph at redhat.com> writes: > >> Óscar Fuentes wrote: >>> The following message is a courtesy copy of an article >>> that has been posted to gmane.comp.compilers.llvm.devel as well. >>> >>> Andrew Haley <aph at redhat.com> writes: >>> >>>> This is x86_64. I have a problem where an

On Wed, 2 Nov 2005, Evan Jones wrote: > I am trying to generate LLVM code that references a global array. > Unfortunately, while I am generating the code I do not know the final length > of the array, as I add elements to it as my compiler goes along. What is the > best way to do this in LLVM? Ideally, I would be able to define the > GlobalVariable array and change its length

Hello Ether, I think it is referring to the Value class (captial V) whose documentation is found at http://llvm.org/doxygen/classllvm_1_1Value.html . It has to be a pointer because the Value class is a parent class to many many child classes. --Sam ----- Original Message ---- > From: ether zhhb <etherzhhb at gmail.com> > To: LLVM Developers Mailing List <llvmdev at

Dear Thomas, > Hi Christoph, > > maybe there is a way of caching the print outputs and output them at the > end of the program execution? > So, your real application do not have this kind of bottle neck. this is a valid idea, thought the problem is: I output all things only "once" and I even output it like: 1) load module 2) go over functions 3) output all blocks with

This is x86_64. I have a problem where an absolute memory load define i32 @foo() { entry: %0 = load i32* inttoptr (i64 12704196 to i32*) ; <i32> [#uses=1] ret i32 %0 } generates incorrect code on LLVM 2.4: 0x7ffff6d54010: mov 0xc1d9c4(%rip),%eax # 0x7ffff79719da 0x7ffff6d54016: retq should be 0x7ffff6d54010: mov 0xc1d9c4, %eax 0x7ffff6d54016: retq

I have a Function* to a function that has a signature like: void foo(double*, double*); I need to write the address of this function into a global variable initializer (really, into the initializer of a particular structure field). The structure field type is void*, and must be. Because of type constraints, doing something like: Function* foo = ...; std::vector<const Type*> fields; ...