Tweaks to simplify code patterns (for ToddGrun) #76925
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In the scrolling speedometer test, the Roslyn CodeAnalysis process shows about 25% of CPU spent in this method. Of that, a surprising amount of it (11.2%) is spent in ImmutableSegmentedDictionary.TryGetValue. Debugging through this code, it appears this is because that is called O(m x n) times where m is the number of nodes to analyze and n is the number of items in groupedActions.GroupedActionsByAnalyzer. Instead, add a hook into GroupedAnalyzerActions to allow a mapping of kind -> analyzers. This can be used by executeNodeActionsByKind to get a much quicker way to determine whether the analyzer can contribute for the node in question. Only publishing this early so Cyrus can take a peek, as I still need to do a bit of debugging around these changes. Once Cyrus and I think the changes have merit, I will create a test insertion and publish the speedometer results once those are available. Only if all that goes well will I promote this PR out of draft mode.
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CyrusNajmabadi
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Jan 25, 2025
| @@ -76,7 +76,7 @@ public static bool TryAdd<TKey, TValue>( | |||
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| #endif | |||
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| public static void AddPooled<K, V>(this IDictionary<K, ArrayBuilder<V>> dictionary, K key, V value) | |||
| public static void AddPooled<K, V>(this Dictionary<K, ArrayBuilder<V>> dictionary, K key, V value) | |||
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all callers passed a Dict. This avoids interface dispatch.
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