[llvm-dev] Enforcing that an intrinsic takes a struct

[Ryan Taylor via llvm-dev]

You might want to take a look at the Semantic Checker.
(tools/clang/lib/Sema/SemaChecking.cpp).

I believe the intrinsic name defaults to intrinsic var name (ie int_sqrt
defaults to llvm.sqrt... since Intrinsic is llvm::Intrinsic).

On Thu, Nov 3, 2016 at 10:48 PM, Louis Li via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hi there -- new to LLVM development. I'm trying to define an intrinsic
> function that takes a pointer to an LLVM struct type (e.g., MyStruct*).
> def int_mynewintrinsic  : Intrinsic<[], [llvm_ptr_ty]>
>
> From what I can see in Intrinsics.td, it's only possible to specify that
> it takes some pointer, whose responsibility is it to enforce / how can I
> enforce that the pointer points to a struct of the desired type?
>
> Related question: Intrinsic has the signature below, but nearly all of the
> functions do not define name "" -- why do some do it and some don't? (e.g.,
> llvm.va_copy does)
>
> class Intrinsic<list<LLVMType> ret_types,
>                 list<LLVMType> param_types = [],
>                 list<IntrinsicProperty> properties = [],
>                 string name = ""> :
>
> Thanks,
> Louis
>
>
>
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