[all-commits] [llvm/llvm-project] 15a08c: [mlir][Vector] Fold selects of single-element i1 v...

[Diego Caballero via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 15a08cf27cd48071ab32fcac584419e1dc2174c1
      https://github.com/llvm/llvm-project/commit/15a08cf27cd48071ab32fcac584419e1dc2174c1
  Author: Diego Caballero <diegocaballero at google.com>
  Date:   2023-08-09 (Wed, 09 Aug 2023)

  Changed paths:
    M mlir/lib/Dialect/Vector/Transforms/VectorTransforms.cpp
    A mlir/test/Dialect/Vector/vector-materialize-mask.mlir

  Log Message:
  -----------
  [mlir][Vector] Fold selects of single-element i1 vectors

This patch adds a folding to select operation between an all-true and all-false vector.
For now, only single element vectors (i.e., vector<1xi1>) are supported. Multi-element
cases are caught by InstCombine.

Reviewed By: awarzynski

Differential Revision: https://reviews.llvm.org/D154682