inserting a target specific builtin in llvm pass

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#1

Hi,

I'm writing a pass which needs to insert an intrinsic in for my target, but
I'm not sure how to create the call. I've tried defining a function, with
the target intrinsic as its name, and then creating a new CallInst to call
it. But how am I supposed to declare this function as an intrinsic?

Thanks,

Sam

#2

Hi Sam,

I'm writing a pass which needs to insert an intrinsic in for my target, but
I'm not sure how to create the call. I've tried defining a function, with
the target intrinsic as its name, and then creating a new CallInst to call
it. But how am I supposed to declare this function as an intrinsic?

you don't have to do anything special for intrinsics, you can just declare them
like any other function declaration.

Ciao, Duncan.

#3

You can do like this:
Function *MyFunc = Intrinsic::getDeclaration(M, Intrinsic::my_instrinc);
CallInst::Create(Myfunc, Args, "", InsertBefore);