[all-commits] [llvm/llvm-project] c0261e: [mlir][IR] Improve `clone` function return type of...

[Matthias Springer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c0261eb02bb092d8842d3c57297e23f31d75cb96
      https://github.com/llvm/llvm-project/commit/c0261eb02bb092d8842d3c57297e23f31d75cb96
  Author: Matthias Springer <me at m-sp.org>
  Date:   2023-05-25 (Thu, 25 May 2023)

  Changed paths:
    M mlir/include/mlir/IR/BuiltinTypeInterfaces.td
    M mlir/include/mlir/IR/BuiltinTypes.h
    M mlir/include/mlir/IR/BuiltinTypes.td
    M mlir/lib/IR/BuiltinTypes.cpp

  Log Message:
  -----------
  [mlir][IR] Improve `clone` function return type of shaped types

There are `clone` overloads that take a shape as a parameter. These overloads are guaranteed to return a ranked shaped type.

`TensorType::clone`/`BaseMemRefType::clone` used to always return a `TensorType`/`BaseMemRefType`. The variants that take a shape parameter now return a `RankedTensorType`/`MemRefType`. Better static type information can make extra casts at the call site obsolete.

E.g.:
```
{TensorType/RankedTensorType} t;
t.clone({1, 2})  // now returns RankedTensorType instead of TensorType
```

Also improve documentation for `clone`.

Differential Revision: https://reviews.llvm.org/D150865