[PATCH] D99152: [AMX] Prototype for vector and amx bitcast.

[LuoYuanke via Phabricator via cfe-commits]

LuoYuanke added a comment.

> Whether to further optimizations are correct is a different problem, but we need a specification for the builtins, intrinsics and the type before going any further in that direction.
>
> I think you need to set the input to `LLVM IR`: https://gcc.godbolt.org/z/WexMjsas9
>
> You should be able to use opaque types with overloaded intrinsics. I don't think you define an intrinsic to take a specific opaque type (because it's not known up front).

The opaque type (https://llvm.org/docs/LangRef.html#opaque-structure-types) is pretty new to me. I didn't find any example for the opaque type in builtins or intrinsics. I am appreciated if you would write an example code (maybe tilezero) for the builtins, intrinsics and the type, so that I can understand it well. If we use <256 x i32> in builtins and use x86_amx in intrinsics, and have an specific intrinsics to covert x86_amx to flat vector <256 x i32>, I am able to do it by myself.


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  https://reviews.llvm.org/D99152/new/

https://reviews.llvm.org/D99152