similar to: [LLVMdev] intended use/structure of AllocA/local variables

Hi, I've tracked the first problem (mentioned in my previous email, quoted below) down further, ending up in the handling of alloca in LoopRotation.cpp (from trunk): // If the instruction's operands are invariant and it doesn't read or write // memory, then it is safe to hoist. Doing this doesn't change the order of // execution in the preheader, but does

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

2012/2/3 Patrik Hägglund <patrik.h.hagglund at ericsson.com>: > Hi, > > I've tracked the first problem (mentioned in my previous email, quoted > below) down further, ending up in the handling of alloca in > LoopRotation.cpp (from trunk): > >      // If the instruction's operands are invariant and it doesn't read > or write >      // memory, then it is

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

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

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 =

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

I'm unintentionally allocating too much space on the stack by using `alloca` inside a loop. To fix this I will do my `alloca` outside of the loop itself.  I'm wondering if there is a way for this to be automatically done: given alloca a function scope, rather than loop scope. I'm curious also, since this actually allocates each time in the loop, is there a way to say the stack

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)

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

> 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

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

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 Wed, Jun 19, 2013 at 3:39 PM, Robinson, Paul < Paul_Robinson at playstation.sony.com> wrote: > > 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

I can't find a lot of information about using structures directly as parameters, returns, and in registers. Is this fully supported on all platforms? Does it always convert to creating a hidden parameter when too large? For example (assume very.large is too big to fit in the target machine registers): define %very.large @get_struct() { %m1 = insertvalue %very.large undef, i32 10, 0 ...

On Wed, Jun 19, 2013 at 1:04 AM, edA-qa mort-ora-y <eda-qa at disemia.com>wrote: > > The problem is that if I derive the name from what the type contains the > length of that name is essential unbound. So how does one generate > names? I'm thinking of just using a long hash and hoping I don't get > accidental collisions. Surely there must be a better way? > Just

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

I'm trying to determine how to do my packed structure compilation and am a bit unclear about how packed structures are handled. Consider this structure: %struct.packed = type <{ i8, i32 }> Now if I get a pointer to the i32 element the pointer will not be properly aligned for a typical i32. On my current machine (x86_64) the cpu doesn't seem to care, but I suspect this isn't

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