[all-commits] [llvm/llvm-project] c9fd85: [AMDGPU] MIR-Tests for Multiplication using KBA

[Jessica Del via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c9fd858172d0b113d117b633120e931ac4f8da2c
      https://github.com/llvm/llvm-project/commit/c9fd858172d0b113d117b633120e931ac4f8da2c
  Author: Jessica Del <Jessica.Del at amd.com>
  Date:   2023-02-21 (Tue, 21 Feb 2023)

  Changed paths:
    M llvm/test/CodeGen/AMDGPU/GlobalISel/mul-known-bits.i64.mir

  Log Message:
  -----------
  [AMDGPU] MIR-Tests for Multiplication using KBA

These tests show inefficient behavior that will be optimized by a
later change.

By using Known Bits Analysis, we can avoid unnecessary multiplications
or additions with 0.