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STIMSMITH

Bitmap Update Queue

CodeArtifact
First seen 7/5/2026
Last seen 7/5/2026
Evidence 6 chunks

NEIGHBORHOOD

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RELATIONSHIPS

7 connections
Memory Request Aggregation implements → 95% 2e
The BUQ head entry aggregates multiple bitmap update requests to the same location.
Coverage Bitmap implements → 100% 2e
The BUQ is responsible for generating and managing updates to the coverage bitmap.
Opportunistic Bitmap Update implements → 95% 2e
The BUQ implements opportunistic bitmap update by utilizing free cache bandwidth.
SNAP ← uses 100% 2e
SNAP uses the Bitmap Update Queue as one of its core hardware units for managing coverage bitmap updates.
CPU Pipeline part of → 100% 2e
The BUQ is added as a micro-architectural unit inside the CPU pipeline.
RISC-V BOOM part of → 100% 2e
The BUQ is added to the RISC-V BOOM core as part of SNAP's hardware modifications.
speculative execution uses → 90% 1e
The BUQ load operation is allowed to proceed speculatively to avoid stalling the CPU pipeline.