[all-commits] [llvm/llvm-project] 2d4e85: [mlir][math] Expand math.powf to exp, log and mult...

[Balaji V. Iyer. via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2d4e8567097eae48bff6ed2b0b1d7056ede15456
      https://github.com/llvm/llvm-project/commit/2d4e8567097eae48bff6ed2b0b1d7056ede15456
  Author: Balaji V. Iyer <bviyer at gmail.com>
  Date:   2023-04-14 (Fri, 14 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.powf to exp, log and multiply

Powf functions are pushed directly to libm. This is problematic for
situations where libm is not available. This patch will decompose the
powf function into log of exponent multiplied by log of base and raise
it to the exp.

Reviewed By: rsuderman

Differential Revision: https://reviews.llvm.org/D148164