JIT: Update and add some textual summaries via Copilot #115604
Conversation
inductionvariablesopts.cpp and scev.cpp had outdated textual descriptions at the top. Use Copilot to help update these descriptions. Also use Copilot to help write descriptions for several other files.
There was a problem hiding this comment.
Pull Request Overview
This PR updates and expands the textual summaries and documentation in key JIT optimization modules to improve clarity and consistency.
- Updated scalar evolution documentation in scev.cpp with minor typo fixes and additional details on the analysis capabilities
- Added comprehensive documentation for promoted struct liveness (promotionliveness.cpp), field decomposition (promotiondecomposition.cpp), physical promotion (promotion.cpp), induction variable optimizations (inductionvariableopts.cpp), and async method transformation (async.cpp)
Reviewed Changes
Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.
Show a summary per file
| File | Description |
|---|---|
| src/coreclr/jit/scev.cpp | Updated scalar evolution analysis documentation with typo corrections and expanded details |
| src/coreclr/jit/promotionliveness.cpp | Added detailed liveness analysis description for promoted structs |
| src/coreclr/jit/promotiondecomposition.cpp | Provided comprehensive summary for field decomposition in promoted struct initialization |
| src/coreclr/jit/promotion.cpp | Clarified the physical promotion strategy and related optimizations |
| src/coreclr/jit/inductionvariableopts.cpp | Refined documentation on induction variable optimizations including strength reduction |
| src/coreclr/jit/async.cpp | Introduced detailed commentary outlining the async method state machine transformation |
github-actions
bot
added
the
area-CodeGen-coreclr
|
Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch |
|
PTAL @dotnet/jit-contrib |
|
We should probably have some tool that will monitor file changes and accordingly update the comments to keep them up-to-date. |
I don't think we can 100% automate this. Some iteration and fixups were still required for these. |
of course, it needs manual tweaking but at least the tool should give hints on what files have diverted from their comments. |
inductionvariablesopts.cpp and scev.cpp had outdated textual descriptions at the top. Use Copilot to help update these descriptions.
Also use Copilot to help write descriptions for several other files.
Only some minimal iteration and changes were needed for these; I used Claude Sonnet 3.7 and it did a very good job.