[llvm] [SPIR-V][Codegen] Represent the property of the target to declare and use typed pointers and update MachineVerifier to use it (PR #110270)

[Vyacheslav Levytskyy via llvm-commits]

VyacheslavLevytskyy wrote:

> That's why I think you should add a separate opcode not named G_BITCAST. You don't really get any benefit from reusing the existing opcode name, and you confuse people who aren't aware of how this works.

Appreciate your feedback. I don't quite agree with this approach in general, although probably I understand the rationale behind it. I'd rather expect that in less invasive and more trivial cases GISel could easier accommodate client targets and slightly widen its applicability.

https://github.com/llvm/llvm-project/pull/110270