[all-commits] [llvm/llvm-project] 2f9f9a: [mlir] Add polynomial approximation for atan and a...

[Rob Suderman via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2f9f9afa4e1281b4ac7c8ad36860a4e35e6f5070
      https://github.com/llvm/llvm-project/commit/2f9f9afa4e1281b4ac7c8ad36860a4e35e6f5070
  Author: Rob Suderman <rob.suderman at gmail.com>
  Date:   2022-01-21 (Fri, 21 Jan 2022)

  Changed paths:
    M mlir/lib/Dialect/Math/Transforms/PolynomialApproximation.cpp
    M mlir/test/Dialect/Math/polynomial-approximation.mlir
    M mlir/test/mlir-cpu-runner/math-polynomial-approx.mlir

  Log Message:
  -----------
  [mlir] Add polynomial approximation for atan and atan2

Implement a taylor series approximation for atan and add an atan2 lowering
that uses atan's appromation. This includes tests for edge cases and tests
for each quadrant.

Reviewed By: NatashaKnk

Differential Revision: https://reviews.llvm.org/D115682