)]}'
{
  "commit": "6daf6ea060b9a9ea33871e276d3a2516577107d2",
  "tree": "cb1f98a28ed8171e0cfdac618e0b82f60aa56b88",
  "parents": [
    "3480ce750a864813cf47ea678aecd76984ec8dc3"
  ],
  "author": {
    "name": "maxbartel",
    "email": "bartel@roofline.ai",
    "time": "Tue Oct 13 16:37:58 2026 +0200"
  },
  "committer": {
    "name": "GitHub",
    "email": "noreply@github.com",
    "time": "Tue Oct 13 16:37:58 2026 +0200"
  },
  "message": "[DispatchCreation] Fuse packed contractions with epilogues and unpack (#24967)\n\nPacked contractions lose their fused epilogues when they arrive at\ndispatch formation as mmt4d or a data-tiled convolution. The result\nunpack can also become a separate dispatch.\n\nAdd opt-in fusion (`fuse-mmt4d`, `fuse-data-tiled-convolution`) of\nlayout-preserving elementwise consumers and the result unpack. Notes for\nreview:\n\n- Epilogues must read the contraction result and write their own result\nthrough identity maps. Epilogues that update the result through their\ninit operand are not matched.\n- Only the unpack layouts that data-tiling materialization produces are\nmatched. For mmt4d that is the row-major form and the narrow-N\ntransposed form. For convolutions it is NHWC, NCHW and batchless HWC;\nbatchless CHW is not matched.\n- The result unpack is the last op of the group, so a consumer of a\nclaimed unpack gets its own dispatch instead of fusing with the unpack.\n- An unpack that its root does not claim becomes a root at its own\nposition in program order, as without the options, so it fuses with its\nown consumers as before.\n- A group holds pack-like ops (`linalg.pack`, `set_encoding`) or the\nresult unpack, but not both, whichever joins first. A unit-batch\ncollapse only joins together with the unpack that consumes it, so a\ngroup never ends in the collapse.\n- The matchers hardcode the CPU layouts; a TODO describes moving the\nlayout decision into its own component that dispatch formation queries.\n\nNo pipeline enables the options until #24969.\n\nThis is one of five PRs adding an experimental CPU path that\nmaterializes data-tiling layouts before dispatch creation, so that\n`linalg.mmt4d` and data-tiled convolutions fuse with their elementwise\nepilogues and result unpacks.\n\n\nCo-authored-by: Claude Opus 5.5 \u003cnoreply@anthropic.com\u003e",
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