)]}'
{
  "commit": "7ea0931a5442aa9baf5e40e9f97745984db2a394",
  "tree": "45d9acaebbefde3faa002b56cdd784037ff0d7b5",
  "parents": [
    "0c45114d4950015dbab7e4b7eb49018020a77182"
  ],
  "author": {
    "name": "Valentin Churavy",
    "email": "v.churavy@gmail.com",
    "time": "Thu Sep 03 18:59:05 2026 +0200"
  },
  "committer": {
    "name": "Valentin Churavy",
    "email": "v.churavy@gmail.com",
    "time": "Thu Sep 03 18:59:05 2026 +0200"
  },
  "message": "BLAS: add rules for cblas_?dotc_sub and cblas_?dotu_sub\n\nAdd derivative rules for the complex dot products in their cblas `_sub`\nform (e.g. cblas_zdotc_sub64_), whose result is written through a\npointer passed as the last argument instead of being returned.\n\n  dotc: res \u003d sum(conj(x_i) * y_i)   REV: dx +\u003d conj(dres)*y, dy +\u003d dres*x\n  dotu: res \u003d sum(x_i * y_i)         REV: dx +\u003d dres*y,       dy +\u003d dres*x\n  FWD (both): dres \u003d dot(dx, y) + dot(x, dy)\n\nTo express this in the BLAS tblgen:\n* new `fpret` argument type for a scalar result returned through a\n  pointer; its shadow provides DiffeRet in reverse mode (and is reset,\n  since the primal overwrote the result) and receives the dual in\n  forward mode. BlasCalls to `*_sub` functions get a result alloca\n  appended and their result loaded back, like the cublas v2 path.\n* new `BConj` op for the complex conjugate of an fp scalar.\n* per-pattern `supportsComplex` bit, so the blanket \"complex inputs not\n  supported in reverse mode\" error only applies to patterns that have\n  not been checked for complex inputs.\n* complex scalars under the cblas ABI are passed by pointer, so\n  byRefFloat now accounts for that (shared helper for all generators).\n\nThe result pointer is attributed nocapture but not writeonly: with\nwriteonly, the unused-value analysis drops a local result buffer\n(e.g. a julia Ref) while keeping the primal call writing to it.\nnocapture is also no longer applied to non-pointer (integer) vector\narguments, which is invalid IR.\n\nAssisted-by: Claude Code (Fable 5.1)\n",
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