[LLVMdev] Value* to Instruction*/LoadInst* casting

[Alexandru Ionut Diaconescu]

Hello,

Thank you for answering. I copy paste-it not precisely (I had the bracket),
but the array was not ok. Not it is solved.

Thank you a lot !

On Mon, Jan 28, 2013 at 11:54 AM, Nick Lewycky <nicholas at mxc.ca> wrote:

> Alexandru Ionut Diaconescu wrote:
>
>> Hello everyone,
>>
>> Can you please tell me if it is possible in LLVM to cast a `Value*` to
>> an `Instruction*/LoadInst*` if for example `isa<LoadInst>(MyValue)` is
>> true?
>>
>
> http://llvm.org/docs/**ProgrammersManual.html#the-**isa-cast-and-dyn-cast-
> **templates<http://llvm.org/docs/ProgrammersManual.html#the-isa-cast-and-dyn-cast-templates>
>
>
>  In my particular piece of code:
>
>>
>>      Value* V1 = icmpInstrArray[i]->getOperand(**0);
>>      Value* V2 = icmpInstrArray[i]->getOperand(**1);
>>      if (isa<LoadInst>(V1) || isa<LoadInst>(V2)){
>>      ...
>>      if(isa<LoadInst>(**icmpInstrArray[i]->getOperand(**0)))
>>          LoadInst *LD100 = cast<LoadInst>(icmpInstrArray[**
>> i]->getOperand(0));
>>              Value *C100 = LD100->getPointerOperand(); //HERE
>> COMPILATION ERROR
>>
>
> You're missing braces after the if-statement.
>
> Nick
>
>  Further, I just need to make `C100->getName()` and I will get the loaded
>> variable.
>>
>> I don't think that I can use cast like that. Can you tell me a method to
>> obtain the loaded variable from a Load instruction correspondent to my
>> ICMP instructions? Or better how I can extract the Load instruction from
>> `icmpInstrArray[i]->**getOperand(0)`?
>>
>> Thank you a lot !
>>
>>
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>>
>
>


-- 
Best regards,
Alexandru Ionut Diaconescu
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