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INF-0006: Note that packed data types don't need HLK coverage #821

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INF-0006: Note that packed data types don't need HLK coverage #821

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9 changes: 8 additions & 1 deletion proposals/infra/INF-0006-Long-Vector-ExecutionTest-Plan.md
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Expand Up @@ -92,7 +92,14 @@ We break coverage down into five test categories.
Testing will cover the following vector element data types:

* bool, int16_t, uint16_t, int32_t, uint32_t, int64_t, uint64_t, float16_t,
float32_t, float64_t, packed_int16_t, and packed_uint16_t.
float32_t, and float64_t.

**Note on packed data types:** `packed_int16_t` and `packed_uint16_t` do not
require HLK coverage. Although tests for these types were originally planned
(see [DXC issue #7683](https://github.com/microsoft/DirectXShaderCompiler/issues/7683)),
we determined that DXIL represents packed data types as 32-bit types. Because
no distinct DXIL-level behavior exists for them, dedicated HLK coverage is
unnecessary.

## Vector sizes and alignments to test

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