[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 9a858b68628a37a36d82b076425c1e5ce902cb6f...7ec21d60e4790384a37de6ce8be3e814cf93b212: https://github.com/llvm/llvm-project/actions/runs/28739972265

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