[all-commits] [llvm/llvm-project] ba9dc5: [ADT] Add is_splat overload accepting initializer_...

[Jakub Kuderski via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ba9dc5f577389db2cc706c0c66615f430a55d153
      https://github.com/llvm/llvm-project/commit/ba9dc5f577389db2cc706c0c66615f430a55d153
  Author: Jakub Kuderski <kubak at google.com>
  Date:   2022-08-08 (Mon, 08 Aug 2022)

  Changed paths:
    M llvm/include/llvm/ADT/STLExtras.h
    M llvm/unittests/ADT/STLExtrasTest.cpp

  Log Message:
  -----------
  [ADT] Add is_splat overload accepting initializer_list

Allow for `is_splat` to be used inline, similar to `is_contained`, e.g.,
```
if (is_splat({type1, type2, type3, type4}))
  ...
```

which is much more concise and less typo-prone than an equivalent chain of equality comparisons.

My immediate motivation is to clean up some code in the SPIR-V dialect that currently needs to either construct a temporary container or use `makeArrayRef` before calling `is_splat`.

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D131289