llvm-project

af37ac8a - [SLP]Use reduction root explicitly from reduction analysis to avoid non-determinism

[SLP]Use reduction root explicitly from reduction analysis to avoid non-determinism Initially, the reduction root was detected using the last member of the UserIgnoreList set, which is unordered. Better to use the reduction root explicitly to avoid non-determinism in the reduction parent block, which may cause incorrect scale factor estimation for the reduction cost.