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lonely eagle 6252237008 [llvm][ADT] Add erase method to ScopedHashTableScope (#193516)
This PR introduces an `erase` method to `ScopedHashTable`, designed to
remove the most recent value associated with a given key within the
scope stack. To support efficient deletion, the internal
`ScopedHashTableVal` structure has been refactored into a doubly linked
list, allowing the predecessor of a node to be identified in O(1) time
during removal. Fix the MLIR CSE issue
https://github.com/llvm/llvm-project/pull/191135#discussion_r3100850607.
Part of https://github.com/llvm/llvm-project/pull/193778.
2026-04-29 19:56:43 +08:00
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