[all-commits] [llvm/llvm-project] 720864: [TOSA] Use attributes for unsigned rescale (#118075)

[RoboTux via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 720864907d1acd9766b5f8140065938c1083cba8
      https://github.com/llvm/llvm-project/commit/720864907d1acd9766b5f8140065938c1083cba8
  Author: Thomas Preud'homme <thomas.preudhomme at arm.com>
  Date:   2024-12-04 (Wed, 04 Dec 2024)

  Changed paths:
    M mlir/include/mlir/Dialect/Tosa/IR/TosaOps.td
    M mlir/lib/Conversion/TosaToLinalg/TosaToLinalg.cpp
    M mlir/test/Conversion/TosaToLinalg/tosa-to-linalg.mlir

  Log Message:
  -----------
  [TOSA] Use attributes for unsigned rescale (#118075)

Unsigned integer types are uncommon enough in MLIR that there is no
operation to cast a scalar from signless to unsigned and vice versa.
Currently tosa.rescale uses builtin.unrealized_conversion_cast which
does not lower. Instead, this commit introduces optional attributes to
indicate unsigned input or output, named similarly to those in the TOSA
specification. This is more in line with the rest of MLIR where specific
operations rather than values are signed/unsigned.



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