[LLVMdev] Transferring value* in LLVM

[Duncan Sands]

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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