LFX Phase 3: AsciiDoc-aware spec chunking#1783
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ishaan-arora-1 wants to merge 3 commits intoriscv:mainfrom
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LFX Phase 3: AsciiDoc-aware spec chunking#1783ishaan-arora-1 wants to merge 3 commits intoriscv:mainfrom
ishaan-arora-1 wants to merge 3 commits intoriscv:mainfrom
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…tion Add scripts and data for cataloging all 185 UDB architectural parameters with schema analysis, CSR cross-references, heuristic classifications, and candidate spec text locations. This forms the foundation for LLM-based parameter extraction from the RISC-V specification. Scripts: - export_udb_params.py: extracts parameters from YAML, derives value types, cross-references CSR IDL, classifies each parameter - map_params_to_spec.py: searches 74 spec .adoc files for text related to each parameter using multi-strategy keyword matching - generate_report.py: produces CSV catalog, text report, and param name list Key results: - 185 parameters cataloged (102 NORM_DIRECT, 55 NORM_CSR_RW, 26 NORM_CSR_WARL, 2 SW_RULE) - 81% high-confidence classifications - 98% of parameters mapped to spec text candidates Closes riscv#1747
Design and implement the formal parameter classification taxonomy and prompt architecture for LLM-based extraction from RISC-V specifications. Deliverables: - taxonomy.md: formal definitions for 8 parameter classes (NORM_DIRECT, NORM_CSR_WARL, NORM_CSR_RW, SW_RULE, NON_ISA, NON_NORM, DOC_RULE, UNKNOWN) with disambiguation rules and a decision tree - system_prompt.txt: ~940 token system prompt defining role, task, taxonomy, critical rules, and JSON output schema - examples.json: 6 positive + 4 negative few-shot examples from real spec text covering all normative classes and key false-positive patterns (NOTE blocks, CSR behavior, fixed requirements, permission vs optionality "may") - run_prompt.py: prompt assembler with 3 CLI modes (assemble, chunk, estimate) supporting context window management across models - validate_prompt.py: 175-check validation suite for all deliverables Key design decisions: - Single-pass extraction + classification to preserve context - Mandatory reasoning field in LLM output to reduce hallucinations - Section-boundary-aware chunking with configurable overlap - Three-layer prompt: system + examples + param names + spec chunk Closes riscv#1748
Add a chunker that splits the 52,602-line RISC-V specification into 78 semantically coherent chunks across 74 .adoc files, preserving CSR section integrity for LLM parameter extraction. Key features: - Never splits within a ==== section (CSR descriptions stay atomic) - Splits at === or ==== AsciiDoc heading boundaries - Target chunk size: 2,500-3,500 lines (~35K-45K tokens) - Overlap context (30 lines) at chunk boundaries - Files under 2,000 lines stay as single chunks - Built-in verify command checks CSR integrity, coverage, and metadata Results: - 78 chunks across 74 files (4 files split into 2 chunks each) - 100% line coverage on all multi-chunk files - Zero CSR section splits - Full manifest.json with per-chunk metadata Closes riscv#1749
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #1783 +/- ##
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- Coverage 71.95% 71.94% -0.01%
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Files 55 55
Lines 28085 28085
Branches 6172 6172
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- Hits 20209 20207 -2
- Misses 7876 7878 +2
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Summary
Split the 52,602-line RISC-V specification into 78 semantically coherent chunks that preserve CSR section integrity for LLM-based parameter extraction. Builds on Phase 1 (#1765) and Phase 2 (#1766).
chunker.py: AsciiDoc-aware chunking script withrun,info, andverifyCLI commandschunks/: 78 numbered chunk files with metadata headers +manifest.jsonChunking Rules
====section — each CSR description (heading, bytefield, behavioral paragraphs) stays together===or====AsciiDoc heading boundariesResults
Multi-Chunk File Details
How to Run
Test Plan
chunker.py verifypasses: 74/74 files, 0 CSR splits, 0 gapsCloses #1749