[JS IC] Eradicate GlobalFileLocalSignature from code

- Reduce usage of global maps

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/IdSignature.kt

@@ -338,34 +338,6 @@ sealed class IdSignature {
         override fun hashCode(): Int = id
     }
 
-    class GlobalFileLocalSignature(val container: IdSignature, val id: Long, val filePath: String) : IdSignature() {
-        override val isPubliclyVisible: Boolean get() = true
-
-        override fun packageFqName(): FqName = container.packageFqName()
-
-        override fun topLevelSignature(): IdSignature {
-            val topLevelContainer = container.topLevelSignature()
-            if (topLevelContainer === container) {
-                if (topLevelContainer is CommonSignature && topLevelContainer.declarationFqName.isEmpty()) {
-                    // private top level
-                    return this
-                }
-            }
-            return topLevelContainer
-        }
-
-        override fun nearestPublicSig(): IdSignature = container.nearestPublicSig()
-
-        override fun render(): String = "${container.render()}:$id from ${filePath.split('/').last()}"
-
-        override fun equals(other: Any?): Boolean =
-            other is GlobalFileLocalSignature && id == other.id && container == other.container && filePath == other.filePath
-
-        private val hashCode = (container.hashCode() * 31 + id.hashCode()) * 31 + filePath.hashCode()
-
-        override fun hashCode(): Int = hashCode
-    }
-
     // Used to reference local variable and value parameters in function
     class GlobalScopeLocalDeclaration(val id: Int, val description: String = "<no description>", val filePath: String) : IdSignature() {
         override val isPubliclyVisible: Boolean get() = false

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/IrFileSerializer.kt

@@ -6,7 +6,10 @@
 package org.jetbrains.kotlin.backend.common.serialization
 
 import org.jetbrains.kotlin.backend.common.serialization.encodings.*
-import org.jetbrains.kotlin.descriptors.*
+import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
+import org.jetbrains.kotlin.descriptors.DescriptorVisibilities
+import org.jetbrains.kotlin.descriptors.InlineClassRepresentation
+import org.jetbrains.kotlin.descriptors.ReceiverParameterDescriptor
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.IrFileEntry
 import org.jetbrains.kotlin.ir.declarations.*
@@ -28,11 +31,11 @@ import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.types.Variance
 import org.jetbrains.kotlin.backend.common.serialization.proto.AccessorIdSignature as ProtoAccessorIdSignature
 import org.jetbrains.kotlin.backend.common.serialization.proto.Actual as ProtoActual
+import org.jetbrains.kotlin.backend.common.serialization.proto.CommonIdSignature as ProtoCommonIdSignature
 import org.jetbrains.kotlin.backend.common.serialization.proto.CompositeSignature as ProtoCompositeSignature
 import org.jetbrains.kotlin.backend.common.serialization.proto.FieldAccessCommon as ProtoFieldAccessCommon
 import org.jetbrains.kotlin.backend.common.serialization.proto.FileEntry as ProtoFileEntry
 import org.jetbrains.kotlin.backend.common.serialization.proto.FileLocalIdSignature as ProtoFileLocalIdSignature
-import org.jetbrains.kotlin.backend.common.serialization.proto.ScopeLocalIdSignature as ProtoScopeLocalIdSignature
 import org.jetbrains.kotlin.backend.common.serialization.proto.FileSignature as ProtoFileSignature
 import org.jetbrains.kotlin.backend.common.serialization.proto.IdSignature as ProtoIdSignature
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrAnonymousInit as ProtoAnonymousInit
@@ -69,8 +72,6 @@ import org.jetbrains.kotlin.backend.common.serialization.proto.IrFunction as Pro
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrFunctionBase as ProtoFunctionBase
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrFunctionExpression as ProtoFunctionExpression
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrFunctionReference as ProtoFunctionReference
-import org.jetbrains.kotlin.backend.common.serialization.proto.IrRawFunctionReference as ProtoRawFunctionReference
-import org.jetbrains.kotlin.backend.common.serialization.proto.IrReturnableBlock as ProtoReturnableBlock
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrGetClass as ProtoGetClass
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrGetEnumValue as ProtoGetEnumValue
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrGetField as ProtoGetField
@@ -83,7 +84,9 @@ import org.jetbrains.kotlin.backend.common.serialization.proto.IrLocalDelegatedP
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrOperation as ProtoOperation
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrProperty as ProtoProperty
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrPropertyReference as ProtoPropertyReference
+import org.jetbrains.kotlin.backend.common.serialization.proto.IrRawFunctionReference as ProtoRawFunctionReference
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrReturn as ProtoReturn
+import org.jetbrains.kotlin.backend.common.serialization.proto.IrReturnableBlock as ProtoReturnableBlock
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrReturnableBlockReturn as ProtoReturnableBlockReturn
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrSetField as ProtoSetField
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrSetValue as ProtoSetValue
@@ -109,10 +112,10 @@ import org.jetbrains.kotlin.backend.common.serialization.proto.IrWhen as ProtoWh
 import org.jetbrains.kotlin.backend.common.serialization.proto.IrWhile as ProtoWhile
 import org.jetbrains.kotlin.backend.common.serialization.proto.LocalSignature as ProtoLocalSignature
 import org.jetbrains.kotlin.backend.common.serialization.proto.Loop as ProtoLoop
+import org.jetbrains.kotlin.backend.common.serialization.proto.LoweredIdSignature as ProtoLoweredIdSignature
 import org.jetbrains.kotlin.backend.common.serialization.proto.MemberAccessCommon as ProtoMemberAccessCommon
 import org.jetbrains.kotlin.backend.common.serialization.proto.NullableIrExpression as ProtoNullableIrExpression
-import org.jetbrains.kotlin.backend.common.serialization.proto.LoweredIdSignature as ProtoLoweredIdSignature
-import org.jetbrains.kotlin.backend.common.serialization.proto.CommonIdSignature as ProtoCommonIdSignature
+import org.jetbrains.kotlin.backend.common.serialization.proto.ScopeLocalIdSignature as ProtoScopeLocalIdSignature
 
 open class IrFileSerializer(
     val messageLogger: IrMessageLogger,
@@ -274,16 +277,6 @@ open class IrFileSerializer(
         return proto.build()
     }
 
-    private fun serializePrivateSignature(signature: IdSignature.GlobalFileLocalSignature): ProtoFileLocalIdSignature {
-        val proto = ProtoFileLocalIdSignature.newBuilder()
-
-        proto.container = protoIdSignature(signature.container)
-        proto.localId = signature.id
-        proto.file = serializeString(signature.filePath)
-
-        return proto.build()
-    }
-
     private fun serializeScopeLocalSignature(signature: IdSignature.GlobalScopeLocalDeclaration): ProtoScopeLocalIdSignature {
         val proto = ProtoScopeLocalIdSignature.newBuilder()
 
@@ -315,7 +308,6 @@ open class IrFileSerializer(
             is IdSignature.FileSignature -> proto.fileSig = serializeFileSignature(idSignature)
             // IR IC part
             is IdSignature.LoweredDeclarationSignature -> proto.icSig = serializeLoweredDeclarationSignature(idSignature)
-            is IdSignature.GlobalFileLocalSignature -> proto.privateSig = serializePrivateSignature(idSignature)
             is IdSignature.GlobalScopeLocalDeclaration -> proto.externalScopedLocalSig = serializeScopeLocalSignature(idSignature)
             is IdSignature.SpecialFakeOverrideSignature -> {}
         }
@@ -558,9 +550,10 @@ open class IrFileSerializer(
             proto.addStatement(serializeStatement(it))
         }
 
-        returnableBlock.inlineFunctionSymbol?.let {
-            proto.inlineFunctionSymbol = serializeIrSymbol(it)
-        }
+        // TODO: decided how should file reference be stored in IC cache
+//        returnableBlock.inlineFunctionSymbol?.let {
+//            proto.inlineFunctionSymbol = serializeIrSymbol(it)
+//        }
 
         proto.build()
     }

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/IrSymbolDeserializer.kt

@@ -160,12 +160,7 @@ class IrSymbolDeserializer(
     }
 
     private fun deserializeFileLocalIdSignature(proto: ProtoFileLocalIdSignature): IdSignature {
-        if (useGlobalSignatures) {
-            val fp = if (proto.hasFile()) fileReader.deserializeString(proto.file) else fileSymbol.owner.path
-            return IdSignature.GlobalFileLocalSignature(deserializeIdSignature(proto.container), proto.localId, fp)
-        } else {
-            return IdSignature.FileLocalSignature(deserializeIdSignature(proto.container), proto.localId)
-        }
+        return IdSignature.FileLocalSignature(deserializeIdSignature(proto.container), proto.localId)
     }
 
     private fun deserializeScopeLocalIdSignature(proto: Int): IdSignature {

compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/ic/IcFileDeserializer.kt

@@ -40,7 +40,6 @@ class IcFileDeserializer(
     val originalEnqueue: IdSignature.(IcFileDeserializer) -> Unit,
     val icFileData: SerializedIcDataForFile,
     val mappingState: JsMappingState,
-    val publicSignatureToIcFileDeserializer: MutableMap<IdSignature, IcFileDeserializer>,
     val enqueue: IdSignature.(IcFileDeserializer) -> Unit,
 ) {
 
@@ -149,7 +148,7 @@ class IcFileDeserializer(
         icFileReader,
         file.symbol,
         emptyList(),
-        { idSig -> enqueueLocalTopLevelDeclaration(idSig) },
+        { idSig -> idSig.enqueue(this) },
         { _, s -> s },
         enqueueAllDeclarations = true,
         useGlobalSignatures = true,
@@ -194,12 +193,6 @@ class IcFileDeserializer(
         }
     }
 
-    fun init() {
-        reversedSignatureIndex.keys.forEach {
-            publicSignatureToIcFileDeserializer[it] = this
-        }
-    }
-
     private val containerSigToOrder by lazy {
         mutableMapOf<IdSignature, ByteArray>().also { map ->
             val containerIds = IrLongArrayMemoryReader(icFileData.order.containerSignatures).array
@@ -236,12 +229,6 @@ class IcFileDeserializer(
         return actualModuleDeserializer.deserializeIrSymbol(idSig, kind)
     }
 
-    private fun enqueueLocalTopLevelDeclaration(idSig: IdSignature) {
-        // We only care about declarations from IC cache. They all are in the map.
-        val deser = publicSignatureToIcFileDeserializer[idSig] ?: return
-        idSig.enqueue(deser)
-    }
-
     fun deserializeDeclaration(idSig: IdSignature): IrDeclaration? {
         cachedDeclaration(idSig)?.let { return it }
 

compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/ic/IcModuleDeserializer.kt

@@ -124,8 +124,6 @@ class IcModuleDeserializer(
         it.file.path
     }
 
-    private val publicSignatureToIcFileDeserializer = mutableMapOf<IdSignature, IcFileDeserializer>()
-
     private fun deserializeIrFile(
         fileProto: ProtoFile,
         fileIndex: Int,
@@ -152,7 +150,6 @@ class IcModuleDeserializer(
             { fileDeserializer -> originalEnqueue(fileDeserializer) },
             icFileData,
             mapping.state,
-            publicSignatureToIcFileDeserializer,
             { fileDeserializer -> enqueue(fileDeserializer) },
         )
 
@@ -167,14 +164,15 @@ class IcModuleDeserializer(
             moduleReversedFileIndex.putIfAbsent(it, icDeserializer) // TODO Why not simple put?
         }
 
-        icDeserializer.init()
         icDeserializer.reversedSignatureIndex.keys.forEach {
-            if (it in icModuleReversedFileIndex) {
-                val existed = icModuleReversedFileIndex[it]!!
-                error("Duplicate signature $it in both ${existed.originalFileDeserializer.file.path} and in ${file.path}")
-            }
+            if (it.isPubliclyVisible) {
+                if (it in icModuleReversedFileIndex) {
+                    val existed = icModuleReversedFileIndex[it]!!
+                    error("Duplicate signature $it in both ${existed.originalFileDeserializer.file.path} and in ${file.path}")
+                }
 
-            icModuleReversedFileIndex[it] = icDeserializer
+                icModuleReversedFileIndex[it] = icDeserializer
+            }
         }
 
         if (strategy.theWholeWorld) {

compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/ic/IcSerializer.kt

@@ -163,10 +163,6 @@ class IdSignatureSerializerWithForIC(
         localIndex = localIndexOffset
         scopeIndex = scopeIndexOffset
     }
-
-    override fun IrDeclaration.createFileLocalSignature(parentSignature: IdSignature, localIndex: Long, description: String?): IdSignature {
-        return IdSignature.GlobalFileLocalSignature(parentSignature, localIndex, fileOrNull?.path ?: "")
-    }
 }
 
 fun storeOrder(file: IrFile, fileDeclarations: Iterable<IrDeclaration>, idSigToLong: (IrSymbol) -> Long): SerializedOrder {