[all-commits] [llvm/llvm-project] df9500: [mlir] Simplify a few cast implementations

[rk via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: df9500c295313f5830fa2f68735cf125a7be4ca3
      https://github.com/llvm/llvm-project/commit/df9500c295313f5830fa2f68735cf125a7be4ca3
  Author: Rahul Kayaith <rkayaith at gmail.com>
  Date:   2023-02-01 (Wed, 01 Feb 2023)

  Changed paths:
    M mlir/include/mlir/IR/Attributes.h
    M mlir/include/mlir/IR/Types.h
    M mlir/include/mlir/IR/Value.h

  Log Message:
  -----------
  [mlir] Simplify a few cast implementations

`{Attribute,Type}::classof` are never actually called at runtime due to
the early exit in their `CastInfo` implementations. By using `if
constexpr` we can avoid needing to define them.

We also don't need to check `is_same_v` here, since this is already
covered by `is_base_of_v`.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D142863