Vararg Intrinsics still supported?

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1

Hi everybody,

I checked around examples for vararg intrinsics, but seems like no target or other parts in LLVM use intrinsics with llvm_vararg_ty as an input and adding such an intrinsics gives me a compiler error saying "unhandled MVT in intrinsics!".

Are these kind of intrinsics still supported into LLVM?

Cheers,
Marcello

2

Hi Marcello,

I checked around examples for vararg intrinsics, but seems like no target or
other parts in LLVM use intrinsics with llvm_vararg_ty as an input and adding
such an intrinsics gives me a compiler error saying "unhandled MVT in intrinsics!".

Are these kind of intrinsics still supported into LLVM?

LLVM never supported varargs intrinsics, i.e. it never supported things like
   llvm.wonder_intrinsic(...)
What is does support is intrinsic overloading, where you can have a version
of wonder_intrinsic that takes a float argument, another that takes an i32
argument etc. It does this by giving each such version of the intrinsic a
different name, by appending the type to the name.

Ciao, Duncan.

3

Well, that explains why I found almost zero information about this online :smiley: The source of my confusion was that I found some strange forum/posts of people talking about that googling , and I wrongly assumed llvm supported something like that at some point in time ...

Cheers!
Marcello