[llvm] [SelectionDAG] Fold VECREDUCE_ADD of a constant BUILD_VECTOR (PR #207560)

[via llvm-commits]

github-actions[bot] wrote:

Failed to get test-suite diff from 774f8a0b868cf526ffbd8af0a7e83c6b70d1b4fb...227a2d4fe7dd4660cea73058c1175170e3890894: https://github.com/llvm/llvm-project/actions/runs/28739972265

https://github.com/llvm/llvm-project/pull/207560