Add byte boolean frontend data type

[yeliu-oss]

Add DataType_t::BYTE_BOOLEAN and map it to CUDNN_DATA_BYTE_BOOLEAN for cuDNN 9.30+. Update the boolean membound sample to use byte-backed boolean tensor storage on 9.30+ backends while keeping logical compute precision as BOOLEAN.

Summary by CodeRabbit

• New Features
  • Added BYTE_BOOLEAN data type support with full serialization capabilities.
  • Implemented automatic version-aware detection to ensure compatibility with cuDNN 93000 and later.
  • Enhanced boolean operations to dynamically select optimal storage representation based on backend version.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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Review profile: CHILL

Plan: Enterprise

Run ID: 40bc6743-1d26-40ff-aa54-8ef029fdea87

📥 Commits

Reviewing files that changed from the base of the PR and between 5bcf8d2 and 5050bd3.

📒 Files selected for processing (2)

• include/cudnn_frontend_utils.h
• samples/cpp/membound/boolean_fusion.cpp

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📝 Walkthrough

Walkthrough

Added BYTE_BOOLEAN to the frontend DataType_t enum with complete cuDNN backend conversion support guarded by version checks (>= 93000), along with size and element-bit-count utilities. Updated the boolean_fusion test to conditionally select the new datatype based on runtime cuDNN version.

Changes

BYTE_BOOLEAN datatype support

Layer / File(s)	Summary
DataType_t enum and JSON serialization include/cudnn_frontend_utils.h	BYTE_BOOLEAN enumerator added to DataType_t with corresponding JSON serialization/deserialization mapping.
Backend conversion and size utilities include/cudnn_frontend_utils.h	Frontend-to-backend conversion handles BYTE_BOOLEAN via CUDNN_DATA_BYTE_BOOLEAN with version guard, returning INVALID_VALUE on older cuDNN versions. Backend-to-frontend conversion reverses the mapping. Size and element-bit-count queries return appropriate values for the new type.
Test integration with boolean_fusion samples/cpp/membound/boolean_fusion.cpp	Test selects BYTE_BOOLEAN when cuDNN compile-time and runtime versions both support it (>= 93000), defaulting to BOOLEAN otherwise. Graph intermediate and output nodes use the selected datatype.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Poem

A byte-sized boolean hops into view,
With version guards to keep things true.
Frontend to backend, back again—
New types flow through the data zen. 🐰✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: adding a new byte boolean frontend data type to the codebase.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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