Look through async thunks in RuntimeHelpers.PrepareMethod
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This function should JIT the method that has the user IL.
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Pull request overview
Updates CoreCLR’s ReflectionInvocation_PrepareMethod path to avoid JIT-preparing runtime async thunk methods, and instead prepare the associated variant that owns the user IL.
Changes:
- Detect async thunk
MethodDescs inPrepareMethodHelper. - Redirect preparation to the async variant via
GetAsyncVariant()prior to prestub/JIT.
jakobbotsch
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RuntimeHelpers.PrepareMethodRuntimeHelpers.PrepareMethod
jkotas
approved these changes
Jan 31, 2026
This was referenced Jan 31, 2026
jkotas
reviewed
Jan 31, 2026
This was referenced Jan 31, 2026
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This function should JIT the method that has the user IL. For runtime async functions reflection exposes the Task-returning variant which is normally a thunk, so treat these transparently.