[release/10.0] Reduce types loaded on startup significantly - #120712

#120712

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JulieLeeMSFT merged 19 commits into

release/10.0from

backport/pr-120459-to-release/10.0

Dec 2, 2025

Commits on Oct 14, 2025

Reduce constraint loading by not forcing constraints to be loaded eagerly - Reduce the set of constraints that need to be loaded for Bounds and cast checking
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Clear up the issues around GetDeclaringMethodTableFromTypeVarTypeDesc

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Tweak, and add comments...
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Fix build errors

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Fix bugs making it not work properly

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Rework the special instantiation type logic to be more effective - Currently it only handles interfaces defined on valuetypes - Change it to work for interfaces that are required implementation of …
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Fix interface matching bug found in testing

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Optimize virtual static and default interface method resolution logic - Tweak the logic so that it will attempt to avoid loading types if they are cannot have implementations of the method we're lo…
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Update loader/classloader/generics/ByRefLike/ValidateNegative test - This test was no longer actually forcing the type which is supposed to throw a TypeLoadException to load within the test - Tweak…
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Pass around the type I want passed around

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Remove WhichConstraintsToLoad::TypeOrMethodVarsOnly

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Fix out of date comment

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- Add support for doing circularity checks on type and method generic parameters to the TypeValidationChecker in crossgen2 - Add support for doing variance safety checks to the type loader in cross…
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Code review feedback

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- Flesh out implementation of sig parser for constraint accessibility - Add test for constraints with function pointers in them

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- Add crossgen2 validation of interface impl variance rules

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- Adjust contracts as suggested - add SkipTypeValidation helper

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Commits on Nov 13, 2025

Merge branch 'release/10.0' into backport/pr-120459-to-release/10.0
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Commits on Nov 26, 2025

Merge branch 'release/10.0' into backport/pr-120459-to-release/10.0
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