[all-commits] [llvm/llvm-project] be9115: [mlir][math] Expand math.round to truncate, compar...

[Balaji V. Iyer. via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: be9115788c7f223dfc6d369455ce84c0e443743b
      https://github.com/llvm/llvm-project/commit/be9115788c7f223dfc6d369455ce84c0e443743b
  Author: Balaji V. Iyer <bviyer at gmail.com>
  Date:   2023-04-13 (Thu, 13 Apr 2023)

  Changed paths:
    M mlir/include/mlir/Dialect/Math/Transforms/Passes.h
    M mlir/lib/Dialect/Math/Transforms/ExpandPatterns.cpp
    M mlir/test/Dialect/Math/expand-math.mlir
    M mlir/test/lib/Dialect/Math/TestExpandMath.cpp
    M mlir/test/mlir-cpu-runner/test-expand-math-approx.mlir

  Log Message:
  -----------
  [mlir][math] Expand math.round to truncate, compare and increment.

Round functions are pushed directly to libm. This is problematic for
situations where libm is not available. This patch will decompose the
roundf function by adding 0.5 to positive number to input
(subtracting for negative) following by a truncate.

Reviewed By: rsuderman

Differential Revision: https://reviews.llvm.org/D148026