[all-commits] [llvm/llvm-project] 3dceb6: Allow IndexType inside tensors.

[Sean Silva via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 3dceb6d2460550ef8c2e53df2181c8a11a7e6730
      https://github.com/llvm/llvm-project/commit/3dceb6d2460550ef8c2e53df2181c8a11a7e6730
  Author: Sean Silva <silvasean at google.com>
  Date:   2020-03-26 (Thu, 26 Mar 2020)

  Changed paths:
    M mlir/docs/Rationale.md
    M mlir/include/mlir/IR/StandardTypes.h
    M mlir/test/IR/invalid.mlir

  Log Message:
  -----------
  Allow IndexType inside tensors.

It's common in many dialects to use tensors to themselves hold tensor shapes (for example, the shape is itself the result of some non-trivial calculation). Currently, such dialects have to use `tensor<?xi64>` or worse (like allowing either i32 or i64 tensors to represent shapes). `tensor<?xindex>` is the natural type to represent this, but is currently disallowed. This patch allows it.

Differential Revision: https://reviews.llvm.org/D76726