TypeDescriptor efficiently matches equal annotations as well

Issue: SPR-15060

Author: jhoeller

spring-core/src/main/java/org/springframework/core/convert/TypeDescriptor.java

@@ -479,14 +479,19 @@ private boolean annotationsMatch(TypeDescriptor otherDesc) {
 		}
 		if (anns.length > 0) {
 			for (int i = 0; i < anns.length; i++) {
-				if (anns[i] != otherAnns[i]) {
+				if (!annotationEquals(anns[i], otherAnns[i])) {
 					return false;
 				}
 			}
 		}
 		return true;
 	}
 
+	private boolean annotationEquals(Annotation ann, Annotation otherAnn) {
+		// Annotation.equals is reflective and pretty slow, so let's check identity and proxy type first.
+		return (ann == otherAnn || (ann.getClass() == otherAnn.getClass() && ann.equals(otherAnn)));
+	}
+
 	@Override
 	public int hashCode() {
 		return getType().hashCode();