[LLVMdev] Transferring value* in LLVM

[Eric Christopher]

It means that you aren't calling the function you think you are.

Again. Dump the arguments, show the code. Anything else isn't going to be helpful and I'm done guessing.

-eric

On Nov 14, 2011, at 12:24 PM, Yakov Malinkovich wrote:

> So what do you think the problem is?
> Thank you.
> Yakov
> 
> 
> On Mon, Nov 14, 2011 at 10:20 PM, Duncan Sands <baldrick at free.fr> wrote:
> On 14/11/11 21:11, Yakov Malinkovich wrote:
> Here is the error that I get:
> Assertion failed: (i >= FTy->getNumParams() || FTy->getParamType(i) ==
> Params[i]->getType()) && "Calling a function with a bad signature!"
> 
> That's not being generated by the CreateCast, so it looks like your description
> of the problem was quite misleading.
> 
> Ciao, Duncan.
> 
> Yakov
> 
> 
> On Mon, Nov 14, 2011 at 9:05 PM, Eric Christopher <echristo at apple.com
> <mailto:echristo at apple.com>> wrote:
> 
>    You'll probably need to dump both the source and the dest and show the code
>    that's being generated. A lot of guessing here that's not getting us very
>    far very fast.
> 
>    -eric
> 
> 
>    On Nov 14, 2011, at 10:56 AM, Yakov Malinkovich wrote:
> 
>    yes - i checked that the src->getType()->isFloatTy() is true
>    Yakov
> 
> 
>    On Mon, Nov 14, 2011 at 8:24 PM, Duncan Sands <baldrick at free.fr
>    <mailto:baldrick at free.fr>> wrote:
> 
>        On 14/11/11 19:20, Yakov Malinkovich wrote:
> 
>            I sure that is.
> 
> 
>        Did you test it?  Can you do: src->getType()->isFloatTy()
> 
> 
>        What could be other reasons for such error?
> 
>        The only other possibility I can think of is that src was created
>        using a different context.
> 
>        Ciao, Duncan.
> 
>            Yakov
> 
> 
>            On Mon, Nov 14, 2011 at 5:44 PM, Duncan Sands <baldrick at free.fr
>            <mailto:baldrick at free.fr>
>            <mailto:baldrick at free.fr <mailto:baldrick at free.fr>>> wrote:
> 
>               On 14/11/11 16:39, Yakov Malinkovich wrote:
> 
>                   It doesnt work it fails with assertation that cast is
>            invalid .What
>                   could be done?
> 
> 
>               Maybe src doesn't have Float type?
> 
>               Ciao, Duncan.
> 
> 
> 
> 
>                   On 11/14/11, Duncan Sands<baldrick at free.fr
>            <mailto:baldrick at free.fr> <mailto:baldrick at free.fr
> 
>            <mailto:baldrick at free.fr>>>
> 
>                     wrote:
> 
>                       Hi Yakov, that looks correct to me.  You can also use
>            CreateFPExt
>                       which is
>                       slightly simpler.
> 
>                       Ciao, Duncan.
> 
> 
>                           I want to transfer value (Value* src) of the type
>            `FloatTyID` to
>                           `DoubleTyID`(I
>                           need all floats to be saved as 8 bytes).I have tried:
> 
>                                 builder.CreateCast(llvm:: Instruction::FPExt,
>            src,
>                           llvm::Type::getDoubleTy( llvmContext),””)
> 
> 
>                           I don`t know if I use CreateCast correctly  and if
>            this approach is
>                           correct at all.
> 
>                           Thank you.
> 
>                           Yakov
> 
> 
> 
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