[LLVMdev] Transferring value* in LLVM

[Eric Christopher]

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> 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>> 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>>
> 
>          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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