llvm-project

a5a79dd8 - [DirectX] Prevent `dxil-resource-access` from entering an infinite phi loop (#211345)

[DirectX] Prevent `dxil-resource-access` from entering an infinite phi loop (#211345) The pass will enter an infinite loop when collecting the handles if the phi nodes loop: https://godbolt.org/z/77sr89oMj. The pass will enter an infinite loop when trying to resolve the handle index of a dynamic resource if the phi nodes loop: https://godbolt.org/z/h4oW7Me5G. This is resolved by updating `collectUsedHandles`/`getAccessIndices` with a visited set of phi nodes. Resolves, in part, https://github.com/llvm/llvm-project/issues/211121 Assisted by: Claude Opus 4.8