similar to: [LLVMdev] What is a FunctionType really?

On Sun, Nov 18, 2012 at 6:40 AM, edA-qa mort-ora-y <eda-qa at disemia.com> wrote: > This may sound weird, but what exactly is a FunctionType? That is, in > terms of memory, or underlying value, what does the FunctionType > actually represent. At first I though it might be a pointer, but it is > not -- since you have to wrap a PointerType around it to use as such. > Can a

On 18/11/12 18:37, David Blaikie wrote: > Types, function or otherwise, have no in-memory representation. They > merely describe how bits should be interpreted. This is what I'm asking about the FunctionType. If I have a Pointer to a FunctionType it is clear how the bits should be interpreted, but what does the FunctionType it self say about the bits, if anything? In terms of use, can

I'm encountering a few problems in my migration that I haven't yet figured out. `getOrInsertFunction` is generating a SEGFAULT at FunctionType::isValidArgumentType(llvm::Type*).  I'm calling it as:     generic_ptr_ = llvm::PointerType::get( llvm::Type::getInt8Ty(context), 0 );     f_natural_int = llvm::IntegerType::get(context, 64);     module->getOrInsertFunction(        

That makes it more mysterious then since I am indeed only calling a main function. Perhaps I have to invoke it a different way. Here's my call I have now: auto main = linker->getModule()->getFunction( "main" ); std::vector<llvm::GenericValue> args(2); args[0].IntVal = llvm::APInt( platform::abi_int_size, 0 ); args[1].PointerVal = nullptr; llvm::GenericValue gv =

Is there a way to get the size of a type in the IR assembly code? I know the size must be known since alloca and getelementptr both implicitly use it, but I don't see any way to get access to the size directly. I know my final compiler will have to get the size itself, but I'm just doing some simple tests directly in assembly now and am hoping there is an easy way to get the size of a

It was the return type which was i64. I changed it also to my abi_int_size and it works now. I have to take care of a few other type translations, but it looks like MCJIT is working now. Thank you. On 08/11/13 18:12, Yaron Keren wrote: > Something must be wrong with the Function Type. Try to debug into > runFunction to see which if condition fails. > Just a guess, if this is on 64

Something must be wrong with the Function Type. Try to debug into runFunction to see which if condition fails. Just a guess, if this is on 64 bit system the first argument type may be int64 but needs to be int32. Yaron 2013/11/8 edA-qa mort-ora-y <eda-qa at disemia.com> > That makes it more mysterious then since I am indeed only calling a main > function. Perhaps I have to invoke

With StructType you can create an empty structure and then call setBody later. How can one do the same thing with a PointerType? I'm translating a recursive structure which includes pointers to itself. I end up creating multiple copies of logically equivalent pointer types. -- edA-qa mort-ora-y -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Sign: Please digitally

I'm getting frustrated by assertions whenever I create a store inst (via builder CreateStore). I get the error "Ptr must be a pointer to Val type!" My destination is a pointer to an equivalent to the source type. The problem is that the types were created via different generation paths and the underlying structure is a distinct object (with the exact same fields). I seem to recall

I'm trying to get MCJIT working but I get the following errors: Full-featured argument passing not supported yet! UNREACHABLE executed at MCJIT.cpp:322! I'm sure the first one will be a problem, but the second one prevents me from testing anything. I don't know how to fix the problem. My code works when using the non-MC JIT, and I added to my EngineBuilder: .setUseMCJIT(true)

Does this help? http://nondot.org/sabre/LLVMNotes/SizeOf-OffsetOf-VariableSizedStructs.txt On 11 Nov 2012, at 10:52, edA-qa mort-ora-y <eda-qa at disemia.com<mailto:eda-qa at disemia.com>> wrote: Is there a way to get the size of a type in the IR assembly code? I know the size must be known since alloca and getelementptr both implicitly use it, but I don't see any way to get

In my language I have anonymous types (essentially tuples), and I have generated functions (like constructors) which are unique for these types. If the same type occurs in multiple modules however it should end up with only one definition being linked. Thus I need a way to give them the same name. The problem is that if I derive the name from what the type contains the length of that name is

I'm working on exception handling and having some trouble with type information. My personality/types work fine when running in the JIT, but when I produce object files and link them it fails. In particular, from an action record and the LSDA I get a type table entry. The problem is this doesn't appear to be pointing to a valid location. If I derefence it a segfault occurs. Are there

> From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On Behalf Of Sean Silva > Sent: Wednesday, June 19, 2013 11:45 AM > To: edA-qa mort-ora-y > Cc: <llvmdev at cs.uiuc.edu> > Subject: Re: [LLVMdev] How to deal with potentially unlimited count/length symbol names? > > On Wed, Jun 19, 2013 at 1:04 AM, edA-qa mort-ora-y <eda-qa at

MCJIT::runFunction supports only main-style argument passing but not other cases like the JIT. These types of arguments will work: (int, char**, char**) (int, char**) (int) (void) The general case is not supported since it requires creating a small stub function, compiling and running it on the fly, supported by JIT but not MCJIT. However, with the supported calling sequences, you can probably

On 14/04/13 19:50, edA-qa mort-ora-y wrote: > I don't know if there is an explicit clone method, but you could do the > printing and then parse it again. That would effectively create a clone > of the object. It appears the "llvm" namespace has several Clone functions. Thus you should be able to do what I suggested: Clone the function, run the original through the

Hello, I want to compare a program before and after having run a FunctionPass. The purpose is merely didactic. What I would like to do is, during the runOnFunction() method, "save" somehow the instruction set and cfg of the function, run the optimization. and then compare the two codes, before and after the transformation. Is there an automatic way tho do that, or a suggested approach?

I'm getting an error that I don't know how to fix. I've isolated the input as much as I easily can. I've attached the file that produces the problem. Just calling "llc err.ll -o err.s" generates the error. I'm going to try and isolate even further, but as I'm not sure what I'm looking for I don't know if I'll be successful. Does anybody know what this

On 03/11/13 12:16, Henrique Santos wrote: > You could try placing a phi node at "defer_block" with incoming value > "result" > when the incoming block is "entry", and do the same for "null" and > "landing". > Then, instead of loading "result", you load the value given by the newly > created phi. That seems like the

On 04/11/2011 06:24 PM, Reid Kleckner wrote: > That should work perfectly fine. The LLVM JIT has support for > declaring and calling out to native functions in the application > through libffi. How about support for a custom memory model? I know this sounds odd, but basically the variables need to map to a specific block of memory: the global heap. The enclosing program uses memcpy to