[all-commits] [llvm/llvm-project] f8d7bd: [MLIR][Shape] Remove empty extent tensor operands

[frgossen via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f8d7bd996f1e9a01b9d5cee39c579dd8ac71bae4
      https://github.com/llvm/llvm-project/commit/f8d7bd996f1e9a01b9d5cee39c579dd8ac71bae4
  Author: Frederik Gossen <frgossen at google.com>
  Date:   2021-04-27 (Tue, 27 Apr 2021)

  Changed paths:
    M mlir/include/mlir/IR/BuiltinAttributes.h
    M mlir/lib/Dialect/Shape/IR/Shape.cpp
    M mlir/test/Dialect/Shape/canonicalize.mlir

  Log Message:
  -----------
  [MLIR][Shape] Remove empty extent tensor operands

Empty extent tensor operands were only removed when they were defined as a
constant. Additionally, we can remove them if they are known to be empty by
their type `tensor<0xindex>`.

Differential Revision: https://reviews.llvm.org/D101351