[all-commits] [llvm/llvm-project] be1aeb: Remove NaN constant from arith.minf, arith.maxf ex...

[Christian Sigg via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: be1aeb818cd9d4f329428a035604bebdd0c2f6e1
      https://github.com/llvm/llvm-project/commit/be1aeb818cd9d4f329428a035604bebdd0c2f6e1
  Author: Christian Sigg <csigg at google.com>
  Date:   2022-01-12 (Wed, 12 Jan 2022)

  Changed paths:
    M mlir/lib/Dialect/Arithmetic/Transforms/ExpandOps.cpp
    M mlir/test/Dialect/Arithmetic/expand-ops.mlir

  Log Message:
  -----------
  Remove NaN constant from arith.minf, arith.maxf expansion

If any of the operands is NaN, return the operand instead of a new constant.

When the rhs operand is a constant, the second arith.cmpf+select ops will be folded away.

https://reviews.llvm.org/D117010 marks the two ops commutative, which will place the constant on the rhs.

Reviewed By: herhut

Differential Revision: https://reviews.llvm.org/D117011