translator: rewrite assignment for primitive nullable types

translator/src/main/kotlin/org/kotlinnative/translator/BlockCodegen.kt

@@ -849,8 +849,16 @@ abstract class BlockCodegen(val state: TranslationState, val variableManager: Va
                     return result
                 }
 
+
                 val result = firstOp as LLVMVariable
-                val sourceArgument = if (result.pointer == secondOp.pointer + 1) secondOp else secondNativeOp
+                val sourceArgument: LLVMSingleValue
+                if (secondOp.type!!.isPrimitive() && (secondOp.pointer == 0) && (firstOp.pointer == 2)) {
+                    sourceArgument = codeBuilder.getNewVariable(secondOp.type!!, 1)
+                    codeBuilder.allocStaticVar(sourceArgument, true)
+                    codeBuilder.storeVariable(sourceArgument, secondOp)
+                } else {
+                    sourceArgument = if (result.pointer == secondOp.pointer + 1) secondOp else secondNativeOp
+                }
                 codeBuilder.storeVariable(result, sourceArgument)
                 codeBuilder.addComment("end variable assignment")
                 return result
@@ -1036,26 +1044,27 @@ abstract class BlockCodegen(val state: TranslationState, val variableManager: Va
     }
 
     private fun evaluateValExpression(element: KtProperty, scopeDepth: Int): LLVMVariable? {
+
         val variable = state.bindingContext.get(BindingContext.VARIABLE, element)!!
         val identifier = variable.name.toString()
 
         val assignExpression = evaluateExpression(element.delegateExpressionOrInitializer, scopeDepth)
-        val expectedExpressionType = LLVMMapStandardType(variable.type, state)
+        val expectedExpressionType = LLVMInstanceOfStandardType("", variable.type, state = state)
         val assignExpressionType = assignExpression?.type
 
-        val isPrimitive = LLVMMapStandardType(variable.type, state) !is LLVMReferred
+        val primitivePointer = LLVMMapStandardType(variable.type, state) !is LLVMReferred
         when (assignExpression) {
             null,
             is LLVMVariable -> {
-                val allocVar = variableManager.receiveVariable(identifier, expectedExpressionType, LLVMRegisterScope(), pointer =
-                if (isPrimitive) 0 else 1)
+                val allocVar = variableManager.receiveVariable(identifier, expectedExpressionType.type, LLVMRegisterScope(), pointer =
+                expectedExpressionType.pointer)
                 codeBuilder.allocStackVar(allocVar)
                 allocVar.pointer++
                 allocVar.kotlinName = identifier
 
                 variableManager.addVariable(identifier, allocVar, scopeDepth)
                 if (assignExpression != null) {
-                    if ((isPrimitive) && (assignExpression.type is LLVMReferenceType)) {
+                    if ((primitivePointer) && (assignExpression.type is LLVMReferenceType)) {
                         throw UnexpectedException(element.text)
                     }
                     addPrimitiveBinaryOperation(KtTokens.EQ, null, allocVar, assignExpression)

translator/src/main/kotlin/org/kotlinnative/translator/llvm/LLVMBuilder.kt

@@ -76,8 +76,9 @@ class LLVMBuilder(val arm: Boolean = false) {
         var result = value
 
         while (argument.pointer < result.pointer) {
-            result = getNewVariable(argument.type, pointer = result.pointer - 1)
-            loadVariable(result, value as LLVMVariable)
+            val currentArgument = getNewVariable(result.type!!, pointer = result.pointer - 1)
+            loadVariable(currentArgument, result as LLVMVariable)
+            result = currentArgument
         }
 
         when (value.type) {

translator/src/main/kotlin/org/kotlinnative/translator/llvm/generators.kt

@@ -15,26 +15,30 @@ fun LLVMFunctionDescriptor(name: String, argTypes: List<LLVMVariable>?, returnTy
             "${s.getType()} ${if (s.type is LLVMReferenceType && !(s.type as LLVMReferenceType).byRef) "byval" else ""} %${s.label}"
         }?.joinToString()}) #0"
 
-fun LLVMInstanceOfStandardType(name: String, type: KotlinType, scope: LLVMScope = LLVMRegisterScope(), state: TranslationState): LLVMVariable = when {
-    type.isFunctionTypeOrSubtype -> LLVMVariable(name, LLVMFunctionType(type, state), name, scope, pointer = 1)
-    type.toString() == "Boolean" -> LLVMVariable(name, LLVMBooleanType(), name, scope)
-    type.toString() == "Byte" -> LLVMVariable(name, LLVMByteType(), name, scope)
-    type.toString() == "Char" -> LLVMVariable(name, LLVMCharType(), name, scope)
-    type.toString() == "Short" -> LLVMVariable(name, LLVMShortType(), name, scope)
-    type.toString() == "Int" -> LLVMVariable(name, LLVMIntType(), name, scope)
-    type.toString() == "Long" -> LLVMVariable(name, LLVMLongType(), name, scope)
-    type.toString() == "Float" -> LLVMVariable(name, LLVMFloatType(), name, scope)
-    type.toString() == "Double" -> LLVMVariable(name, LLVMDoubleType(), name, scope)
-    type.toString() == "String" -> LLVMVariable(name, LLVMStringType(0), name, scope)
-    type.nameIfStandardType.toString() == "Nothing" -> LLVMVariable(name, LLVMNullType(), name, scope)
-    type.isUnit() -> LLVMVariable("", LLVMVoidType(), name, scope)
-    type.isMarkedNullable -> LLVMVariable(name, LLVMReferenceType(type.toString().dropLast(1), prefix = "class"), name, scope, pointer = 1)
-    else -> {
-        val refType = state.classes[type.toString()]?.type ?: LLVMReferenceType(type.toString(), align = state.pointerAlign, prefix = "class")
+fun LLVMInstanceOfStandardType(name: String, type: KotlinType, scope: LLVMScope = LLVMRegisterScope(), state: TranslationState): LLVMVariable {
+    val typeName = type.toString().dropLastWhile { it == '?' }
+    val pointerMark = if (type.toString().last() == '?') 1 else 0
+    return when {
+        type.isFunctionTypeOrSubtype -> LLVMVariable(name, LLVMFunctionType(type, state), name, scope, pointer = 1)
+        typeName == "Boolean" -> LLVMVariable(name, LLVMBooleanType(), name, scope, pointerMark)
+        typeName == "Byte" -> LLVMVariable(name, LLVMByteType(), name, scope, pointerMark)
+        typeName == "Char" -> LLVMVariable(name, LLVMCharType(), name, scope, pointerMark)
+        typeName == "Short" -> LLVMVariable(name, LLVMShortType(), name, scope, pointerMark)
+        typeName == "Int" -> LLVMVariable(name, LLVMIntType(), name, scope, pointerMark)
+        typeName == "Long" -> LLVMVariable(name, LLVMLongType(), name, scope, pointerMark)
+        typeName == "Float" -> LLVMVariable(name, LLVMFloatType(), name, scope, pointerMark)
+        typeName == "Double" -> LLVMVariable(name, LLVMDoubleType(), name, scope, pointerMark)
+        typeName == "String" -> LLVMVariable(name, LLVMStringType(0), name, scope, pointerMark)
+        type.nameIfStandardType.toString() == "Nothing" -> LLVMVariable(name, LLVMNullType(), name, scope)
+        type.isUnit() -> LLVMVariable("", LLVMVoidType(), name, scope)
+        type.isMarkedNullable -> LLVMVariable(name, LLVMReferenceType(typeName, prefix = "class"), name, scope, pointer = pointerMark)
+        else -> {
+            val refType = state.classes[type.toString()]?.type ?: LLVMReferenceType(typeName, align = state.pointerAlign, prefix = "class")
 
-        val result = LLVMVariable(name, refType, name, scope, pointer = 1)
-        refType.location.addAll(type.getSubtypesPredicate().toString().split(".").dropLast(1))
-        result
+            val result = LLVMVariable(name, refType, name, scope, pointer = 1)
+            refType.location.addAll(type.getSubtypesPredicate().toString().split(".").dropLast(1))
+            result
+        }
     }
 }