[Bugfix] Adjust role assignment in warp specialization based on read access

[chengyupku]

• Updated the role assignment logic in warp_specialized_rewriter.cc to set the role to kConsumer when no reads are detected, ensuring correct behavior in memory access scenarios.

[github-actions]

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[gemini-code-assist]

Summary of Changes

Hello @chengyupku, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a bug in the warp specialization rewriter by refining the logic for assigning roles to memory access patterns. The change ensures that blocks with no read operations are correctly identified as consumers, which is essential for accurate memory access management and optimization within the warp specialization framework.

Highlights

• Bugfix: Role Assignment: Corrected the role assignment logic within WarpSpecializedRoleMarker to ensure that if a memory block has no detected read accesses, its role is accurately set to kConsumer. Previously, such blocks might have incorrectly defaulted to kProducer.

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[gemini-code-assist]

Code Review

This pull request updates the role assignment logic in warp_specialized_rewriter.cc to set the role to kConsumer when no reads are detected, ensuring correct behavior in memory access scenarios. The review focuses on improving the clarity of the code.