)]}'
{
  "commit": "f652cd614efdc7c10faea86cdc8da7cd96870aa1",
  "tree": "892c527fee596ea2057a6a2a2bb012e49abf80fa",
  "parents": [
    "de79344abe04cab8fe538cdd0f975f78d941cd24"
  ],
  "author": {
    "name": "Jacques Pienaar",
    "email": "jacques+gh@japienaar.info",
    "time": "Wed Aug 19 17:18:58 2026 +0200"
  },
  "committer": {
    "name": "GitHub",
    "email": "noreply@github.com",
    "time": "Wed Aug 19 15:18:58 2026 +0000"
  },
  "message": "[mlir][IR] Add transient scope support for resettable MLIRContext. (#217320)\n\nWe have cases where we have many context being used to compile\nindependent modules. Creating a context per ends up being rather\nexpensive and the only reason to not reuse contexts more is bloat over\ntime. This changes adds a \"transient\" scope which can be used for such\ncases. Initially I had tried a \"cheap fork\" approach for contexts, this\nis complimentary to that (that one allows for independent contexts\ncheaply), while this one is less invasive.\n\nIntroduce an overlay/layered state architecture in StorageUniquer and\nMLIRContext to enable efficient scoping and rollback of transient types,\nattributes, affine expressions, and distinct attributes added since\nentering a transient scope.\n\nWhen executing repeated compilation passes or running in long-lived\ncompiler services (e.g. JITs, servers, REPLs), allocating and destroying\nan MLIRContext incurs significant overhead (~3.7 ms per context) to\nre-register and load dialects. This change allows freezing an\ninitialized context as a base state and rolling back transient\ntypes/attributes in O(1) time without re-instantiating dialects or\nbuiltins.\n\nAssisted-By: Gemini",
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