[all-commits] [llvm/llvm-project] ab2fc9: Fix handling of special and large vals in expand p...

[Ramiro Leal-Cavazos via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ab2fc9521ec606603412645d4a4b3cf456acd153
      https://github.com/llvm/llvm-project/commit/ab2fc9521ec606603412645d4a4b3cf456acd153
  Author: Ramiro Leal-Cavazos <ramiroleal050 at gmail.com>
  Date:   2023-04-20 (Thu, 20 Apr 2023)

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

  Log Message:
  -----------
  Fix handling of special and large vals in expand pattern for `round`

The current expand pattern for `math.round` does not handle the
special values -0.0, +-inf, and +-nan correctly. It also does not
properly handle values with magnitude |x| >= 2^23. Lastly, the pattern
generates invalid IR when the input to `math.round` is a vector. This
patch fixes these issues.

Reviewed By: rsuderman

Differential Revision: https://reviews.llvm.org/D148398