[LLVMdev] llvm get annotations

[Sebastian Dreßler]

Hi Alexandru,

On 02/27/2013 03:15 PM, Alexandru Ionut Diaconescu wrote:
> [...]
> Is there an easier way to get the simple DS annotation of @f ?
> 

I used to annotate C / C++ functions with e.g.
__attribute__((annotate("kernel"))) and the retrieved the name of the
function with the following code:

/*****************************************************/

GlobalValue *gv;
Value *a = gv->getOperand(0);

ConstantStruct *annoStruct =
    dynamic_cast<ConstantStruct>(
        dynamic_cast<ConstantArray>(a)->getOperand(0);
    );

GlobalVariable *gvar = dynamic_cast<GlobalVariable>(
    dynamic_cast<ConstantExpr>(
        annoStruct->getOperand(1)
    )->getOperand(0)
);

std::string str = dynamic_cast<ConstantDataArray>(
    gvar->getOperand(0)
)->getAsString();

if (str.find("kernel")) {
    [...]
}

/*****************************************************/

Inside the last if one can find the function that belongs to the annotation.

IMO its a bit ugly, but it works for me ;)

Cheers,
Sebastian

-- 
Mit freundlichen Grüßen / Kind regards

Sebastian Dreßler

Zuse Institute Berlin (ZIB)
Takustraße 7
D-14195 Berlin-Dahlem
Germany

dressler at zib.de
Phone: +49 30 84185-261

http://www.zib.de/