Optimize deserialized scope members computation for non-existing names

Do not use memoized function if member with given name is not contained in the scope

There are a lot of queries with names of non-existent functions, that
leads to many effectively redundant Map nodes in MemoizedFunction and also cause
additional computation that is worth to compute at once

Also drop unused 'location' parameter

core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/descriptors/DeserializedClassDescriptor.kt

@@ -251,19 +251,19 @@ class DeserializedClassDescriptor(
             })
         }
 
-        override fun getNonDeclaredFunctionNames(location: LookupLocation): Set<Name> {
+        override fun getNonDeclaredFunctionNames(): Set<Name> {
             return classDescriptor.typeConstructor.supertypes.flatMapTo(LinkedHashSet()) {
-                it.memberScope.getContributedDescriptors().filterIsInstance<SimpleFunctionDescriptor>().map { it.name }
-            } + c.components.additionalClassPartsProvider.getFunctionsNames(this@DeserializedClassDescriptor)
+                it.memberScope.getFunctionNames()
+            }.apply { addAll(c.components.additionalClassPartsProvider.getFunctionsNames(this@DeserializedClassDescriptor)) }
         }
 
-        override fun getNonDeclaredVariableNames(location: LookupLocation): Set<Name> {
+        override fun getNonDeclaredVariableNames(): Set<Name> {
             return classDescriptor.typeConstructor.supertypes.flatMapTo(LinkedHashSet()) {
-                it.memberScope.getContributedDescriptors().filterIsInstance<PropertyDescriptor>().map { it.name }
+                it.memberScope.getVariableNames()
             }
         }
 
-        override fun getNonDeclaredTypeAliasNames(location: LookupLocation): Set<Name> {
+        override fun getNonDeclaredTypeAliasNames(): Set<Name> {
             return classDescriptor.typeConstructor.supertypes.flatMapTo(LinkedHashSet()) {
                 it.memberScope.getContributedDescriptors().filterIsInstance<TypeAliasDescriptor>().map { it.name }
             }
@@ -339,7 +339,7 @@ class DeserializedClassDescriptor(
 
         fun findEnumEntry(name: Name): ClassDescriptor? = enumEntryByName(name)
 
-        private fun computeEnumMemberNames(): Collection<Name> {
+        private fun computeEnumMemberNames(): Set<Name> {
             // NOTE: order of enum entry members should be irrelevant
             // because enum entries are effectively invisible to user (as classes)
             val result = HashSet<Name>()

core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/descriptors/DeserializedMemberScope.kt

@@ -64,6 +64,17 @@ abstract class DeserializedMemberScope protected constructor(
     private val typeAliases =
             c.storageManager.createMemoizedFunction<Name, Collection<TypeAliasDescriptor>> { computeTypeAliases(it) }
 
+    private val functionNamesLazy by c.storageManager.createLazyValue {
+        functionProtos.keys + getNonDeclaredFunctionNames()
+    }
+
+    private val variableNamesLazy by c.storageManager.createLazyValue {
+        propertyProtos.keys + getNonDeclaredVariableNames()
+    }
+
+    override fun getFunctionNames() = functionNamesLazy
+    override fun getVariableNames() = variableNamesLazy
+
     private inline fun <M : MessageLite> Collection<M>.groupByName(
             getNameIndex: (M) -> Int
     ) = groupBy { c.nameResolver.getName(getNameIndex(it)) }
@@ -93,7 +104,10 @@ abstract class DeserializedMemberScope protected constructor(
     protected open fun computeNonDeclaredFunctions(name: Name, functions: MutableCollection<SimpleFunctionDescriptor>) {
     }
 
-    override fun getContributedFunctions(name: Name, location: LookupLocation): Collection<SimpleFunctionDescriptor> = functions(name)
+    override fun getContributedFunctions(name: Name, location: LookupLocation): Collection<SimpleFunctionDescriptor> {
+        if (name !in getFunctionNames()) return emptyList()
+        return functions(name)
+    }
 
     private fun computeProperties(name: Name) =
             computeDescriptors(
@@ -113,9 +127,15 @@ abstract class DeserializedMemberScope protected constructor(
                     { c.memberDeserializer.loadTypeAlias(it) },
                     { })
 
-    override fun getContributedVariables(name: Name, location: LookupLocation): Collection<PropertyDescriptor> = properties(name)
+    override fun getContributedVariables(name: Name, location: LookupLocation): Collection<PropertyDescriptor> {
+        if (name !in getVariableNames()) return emptyList()
+        return properties(name)
+    }
 
-    protected fun getContributedTypeAliases(name: Name): Collection<TypeAliasDescriptor> = typeAliases(name)
+    protected fun getContributedTypeAliases(name: Name): Collection<TypeAliasDescriptor> {
+        if (name !in typeAliasNames) return emptyList()
+        return typeAliases(name)
+    }
 
     protected abstract fun addClassifierDescriptors(result: MutableCollection<DeclarationDescriptor>, nameFilter: (Name) -> Boolean)
 
@@ -184,13 +204,13 @@ abstract class DeserializedMemberScope protected constructor(
     }
 
     protected fun addNonDeclaredDescriptors(result: MutableCollection<DeclarationDescriptor>, location: LookupLocation) {
-        result.addAll(getNonDeclaredFunctionNames(location).flatMap { getContributedFunctions(it, location) })
-        result.addAll(getNonDeclaredVariableNames(location).flatMap { getContributedVariables(it, location) })
+        result.addAll(getNonDeclaredFunctionNames().flatMap { getContributedFunctions(it, location) })
+        result.addAll(getNonDeclaredVariableNames().flatMap { getContributedVariables(it, location) })
     }
 
-    protected abstract fun getNonDeclaredFunctionNames(location: LookupLocation): Set<Name>
-    protected abstract fun getNonDeclaredVariableNames(location: LookupLocation): Set<Name>
-    protected abstract fun getNonDeclaredTypeAliasNames(location: LookupLocation): Set<Name>
+    protected abstract fun getNonDeclaredFunctionNames(): Set<Name>
+    protected abstract fun getNonDeclaredVariableNames(): Set<Name>
+    protected abstract fun getNonDeclaredTypeAliasNames(): Set<Name>
 
     protected abstract fun addEnumEntryDescriptors(result: MutableCollection<DeclarationDescriptor>, nameFilter: (Name) -> Boolean)
 

core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/descriptors/DeserializedPackageMemberScope.kt

@@ -72,9 +72,9 @@ open class DeserializedPackageMemberScope(
         }
     }
 
-    override fun getNonDeclaredFunctionNames(location: LookupLocation): Set<Name> = emptySet()
-    override fun getNonDeclaredVariableNames(location: LookupLocation): Set<Name> = emptySet()
-    override fun getNonDeclaredTypeAliasNames(location: LookupLocation): Set<Name> = emptySet()
+    override fun getNonDeclaredFunctionNames(): Set<Name> = emptySet()
+    override fun getNonDeclaredVariableNames(): Set<Name> = emptySet()
+    override fun getNonDeclaredTypeAliasNames(): Set<Name> = emptySet()
 
     override fun addEnumEntryDescriptors(result: MutableCollection<DeclarationDescriptor>, nameFilter: (Name) -> Boolean) {
         // Do nothing