llvm-project

73499774 - [mlir][CSE] Fix CSE markAnalysesPreserved<DominanceInfo, PostDominanceInfo> comment (#190471)

[mlir][CSE] Fix CSE markAnalysesPreserved<DominanceInfo, PostDominanceInfo> comment (#190471) The original comment claimed that DominanceInfo and PostDominanceInfo could be preserved because region operations are not removed. However, the real reason was that the original CSE only deleted redundant operations without moving any operation to a different block, leaving the dominance tree structure unchanged. Part of https://github.com/llvm/llvm-project/pull/180556.