Investigate/optimize performance of TrimAnalysisPatterns tracked by ILLink Roslyn analyzer

[sbomer]

The ILLink RoslynAnalyzer has various types such as TrimAnalysisMethodCallPattern and TrimAnalysisFieldAccessPattern used to track relevant "patterns" that may produce dataflow warnings. Tracking such values is potentially expensive, especially now that we do it even for values which may not be relevant for dataflow, just to track their types, after #93732.

On top of that, #94123 is introducing additional context to the tracked patterns to track the "feature context" of the invocation/field access/etc.

We should investigate the performance of this approach and consider ways to optimize it.

Context: #94123 (comment)

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Issue Details

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The ILLink RoslynAnalyzer has various types such as TrimAnalysisMethodCallPattern and TrimAnalysisFieldAccessPattern used to track relevant "patterns" that may produce dataflow warnings. Tracking such values is potentially expensive, especially now that we do it even for values which may not be relevant for dataflow, just to track their types, after #93732.

We should investigate the performance of this approach and consider ways to optimize it.

Context: #94123 (comment)

Author:	sbomer
Assignees:	-
Labels:	area-Meta
Milestone:	-

Tagging subscribers to this area: @agocke, @sbomer, @vitek-karas
See info in area-owners.md if you want to be subscribed.

Issue Details

---

The ILLink RoslynAnalyzer has various types such as TrimAnalysisMethodCallPattern and TrimAnalysisFieldAccessPattern used to track relevant "patterns" that may produce dataflow warnings. Tracking such values is potentially expensive, especially now that we do it even for values which may not be relevant for dataflow, just to track their types, after #93732.

On top of that, #94123 is introducing additional context to the tracked patterns to track the "feature context" of the invocation/field access/etc.

We should investigate the performance of this approach and consider ways to optimize it.

Context: #94123 (comment)

Author:	sbomer
Assignees:	-
Labels:	area-Meta, untriaged, area-Tools-ILLink
Milestone:	-