John Shumway 3e110e1718 [rocm-libraries] ROCm/rocm-libraries#7114 (commit ecef372) ...

[CK] Add rocm_ck foundation types: DataType, Layout, Args,
 Ops (#7114)
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## Summary

- Add the vocabulary types that all rocm_ck schema headers build on
- 9 new headers under `include/rocm_ck/`, 6 unit test files
- Pure C++20, host-only — no CK Tile dependencies

**Headers:**

| Header | Purpose |
|--------|---------|
| `index_t.hpp` | `index_t`, `long_index_t` (matches ck_tile) |
| `gpu_target.hpp` | `GpuTarget` enum (ISA targets) |
| `datatype.hpp` | `DataType` enum (17 variants) |
| `layout.hpp` | `Layout` enum (Row, Col, Auto) + stride helpers |
| `fixed_string.hpp` | `FixedString<N>` — structural string for NTTPs |
| `args.hpp` | Generic kernel argument buffer (ABI) |
| `ops.hpp` | Operator structs (`GemmOp`, `AddOp`, ...) + `Op` variant |
| `physical_tensor.hpp` | `PhysicalTensor` — maps names to Args slots |
| `resolved_tensor.hpp` | `ResolvedTensor` — output of
`Signature::resolve()` |

**Stack**: This is PR 1 of 3 porting the rocm_ck constexpr schema from
experimental to production, #7143.
1. **This PR** — Foundation types (vocabulary)
2. Schema engine — `Signature`, `resolve()`, `ArchProperties`
3. Spec factories — `GemmSpec`, `ElementwiseSpec`, `makeSpec()`

## Test plan

- [ ] `ninja build-smoke-rocm-ck` builds all tests
- [ ] `ctest -L ROCM_CK_SMOKE --output-on-failure` — 6 unit tests pass
(86 test cases)
- [ ] Default CK build (`CK_ENABLE_ROCM_CK=OFF`) unaffected

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2026-05-15 19:22:44 +00:00

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