KT-37024 Optimized delegated property metadata generation in inline fun

compiler/backend/src/org/jetbrains/kotlin/codegen/ExpressionCodegen.java

@@ -4587,10 +4587,16 @@ public class ExpressionCodegen extends KtVisitor<StackValue, StackValue> impleme
         // We can use the $$delegatedProperties array as in non-inline functions and upon inlining, detect elements at what indices
         // of that array are used in the inline function body, load the corresponding initializing bytecode from <clinit> of the
         // container class (where the PropertyReferenceNImpl instance is created), copy and adapt it at the call site
-        //noinspection ConstantConditions
-        StackValue value = context.getFunctionDescriptor().isInline()
-                           ? generatePropertyReference(variable.getDelegate(), variableDescriptor, variableDescriptor, null)
-                           : PropertyCodegen.getDelegatedPropertyMetadata(variableDescriptor, bindingContext);
+        StackValue value;
+        if (PropertyCodegen.isDelegatedPropertyWithOptimizedMetadata(variableDescriptor, bindingContext)) {
+            value = PropertyCodegen.getOptimizedDelegatedPropertyMetadataValue();
+        } else if (context.getFunctionDescriptor().isInline()) {
+            //noinspection ConstantConditions
+            value = generatePropertyReference(variable.getDelegate(), variableDescriptor, variableDescriptor, null);
+        }
+        else {
+            value = PropertyCodegen.getDelegatedPropertyMetadata(variableDescriptor, bindingContext);
+        }
         value.put(K_PROPERTY_TYPE, null, v);
         metadataVar.storeSelector(K_PROPERTY_TYPE, null, v);
     }

compiler/backend/src/org/jetbrains/kotlin/codegen/PropertyCodegen.java

@@ -564,13 +564,24 @@ public class PropertyCodegen {
         return codegen.invokeFunction(resolvedCall, receiver);
     }
 
+    public static boolean isDelegatedPropertyWithOptimizedMetadata(
+            @NotNull VariableDescriptorWithAccessors descriptor,
+            @NotNull BindingContext bindingContext
+    ) {
+        return Boolean.TRUE == bindingContext.get(DELEGATED_PROPERTY_WITH_OPTIMIZED_METADATA, descriptor);
+    }
+
+    public static @NotNull StackValue getOptimizedDelegatedPropertyMetadataValue() {
+        return StackValue.constant(null, K_PROPERTY_TYPE);
+    }
+
     @NotNull
     public static StackValue getDelegatedPropertyMetadata(
             @NotNull VariableDescriptorWithAccessors descriptor,
             @NotNull BindingContext bindingContext
     ) {
-        if (Boolean.TRUE == bindingContext.get(DELEGATED_PROPERTY_WITH_OPTIMIZED_METADATA, descriptor)) {
-            return StackValue.constant(null, K_PROPERTY_TYPE);
+        if (isDelegatedPropertyWithOptimizedMetadata(descriptor, bindingContext)) {
+            return getOptimizedDelegatedPropertyMetadataValue();
         }
 
         Type owner = bindingContext.get(DELEGATED_PROPERTY_METADATA_OWNER, descriptor);