Remove allocations from IsCustomAttributeDefined #44694
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I couldn't figure out the best area label to add to this PR. If you have write-permissions please help me learn by adding exactly one area label. |
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Rather than going via
CustomAttributeData.GetCustomAttributeRecordsand creating an array, iterate theattributeTokensdirectly.Also has the advantage of early out rather than iterating every element to create the array then iterating it again for the test.
Startup allocations for ASP.NET MVC app
Before
After
Contributes to #44598
/cc @jkotas @stephentoub