diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/KonanLoweringPhases.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/KonanLoweringPhases.kt
index d8b289cdc6f..cb628860134 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/KonanLoweringPhases.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/KonanLoweringPhases.kt
@@ -155,7 +155,8 @@ internal val sharedVariablesPhase = makeKonanFileLoweringPhase(
 internal val localFunctionsPhase = makeKonanFileOpPhase(
         op = { context, irFile ->
             LocalDelegatedPropertiesLowering().lower(irFile)
-            LocalDeclarationsLowering(context).runOnFilePostfix(irFile)
+            LocalDeclarationsLowering(context).lower(irFile)
+            LocalClassPopupLowering(context).lower(irFile)
         },
         name = "LocalFunctions",
         description = "Local function lowering",
diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ir/Ir.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ir/Ir.kt
index 69f87aaf5e8..4c34b76c89e 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ir/Ir.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ir/Ir.kt
@@ -328,7 +328,9 @@ internal class KonanSymbols(context: Context, private val symbolTable: SymbolTab
 
     override val getContinuation = internalFunction("getContinuation")
 
-    val returnIfSuspended = internalFunction("returnIfSuspended")
+    override val returnIfSuspended = internalFunction("returnIfSuspended")
+
+
 
     val coroutineLaunchpad = internalFunction("coroutineLaunchpad")
 
@@ -336,6 +338,8 @@ internal class KonanSymbols(context: Context, private val symbolTable: SymbolTab
 
     val konanCoroutineContextGetter = internalFunction("getCoroutineContext")
 
+    override val suspendCoroutineUninterceptedOrReturn = konanSuspendCoroutineUninterceptedOrReturn
+
     private val coroutinesIntrinsicsPackage = context.builtIns.builtInsModule.getPackage(
         context.config.configuration.languageVersionSettings.coroutinesIntrinsicsPackageFqName()).memberScope
 
@@ -345,11 +349,14 @@ internal class KonanSymbols(context: Context, private val symbolTable: SymbolTab
     val continuationClassDescriptor = coroutinesPackage
             .getContributedClassifier(Name.identifier("Continuation"), NoLookupLocation.FROM_BACKEND) as ClassDescriptor
 
-    val coroutineContextGetter = coroutinesPackage
+    private val coroutineContextGetterDescriptor = coroutinesPackage
             .getContributedVariables(Name.identifier("coroutineContext"), NoLookupLocation.FROM_BACKEND)
             .single()
             .getter!!
 
+    override val coroutineContextGetter = symbolTable.referenceSimpleFunction(coroutineContextGetterDescriptor)
+    override val coroutineGetContext = coroutineContextGetter
+
     override val coroutineImpl get() = TODO()
 
     val baseContinuationImpl = topLevelClass("kotlin.coroutines.native.internal.BaseContinuationImpl")
diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/IrToBitcode.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/IrToBitcode.kt
index 682d58c2e5f..762d9705644 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/IrToBitcode.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/IrToBitcode.kt
@@ -11,8 +11,10 @@ import org.jetbrains.kotlin.backend.common.descriptors.allParameters
 import org.jetbrains.kotlin.backend.common.ir.ir2string
 import org.jetbrains.kotlin.backend.konan.*
 import org.jetbrains.kotlin.backend.konan.descriptors.*
+import org.jetbrains.kotlin.backend.konan.descriptors.isArray
 import org.jetbrains.kotlin.backend.konan.ir.*
 import org.jetbrains.kotlin.backend.konan.ir.NaiveSourceBasedFileEntryImpl
+import org.jetbrains.kotlin.backend.konan.ir.containsNull
 import org.jetbrains.kotlin.backend.konan.llvm.coverage.*
 import org.jetbrains.kotlin.backend.konan.llvm.objcexport.is64Bit
 import org.jetbrains.kotlin.backend.konan.optimizations.*
@@ -1237,6 +1239,7 @@ internal class CodeGeneratorVisitor(val context: Context, val lifetimes: Map<IrE
             IrTypeOperator.INSTANCEOF                -> evaluateInstanceOf(value)
             IrTypeOperator.NOT_INSTANCEOF            -> evaluateNotInstanceOf(value)
             IrTypeOperator.SAM_CONVERSION            -> TODO(ir2string(value))
+            IrTypeOperator.IMPLICIT_DYNAMIC_CAST     -> TODO(ir2string(value))
         }
     }
 
diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/FunctionInlining.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/FunctionInlining.kt
index 3c241247281..11a91c8f716 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/FunctionInlining.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/FunctionInlining.kt
@@ -74,7 +74,7 @@ internal class FunctionInlining(val context: Context) : IrElementTransformerVoid
             descriptor.isBuiltInSuspendCoroutineUninterceptedOrReturn(languageVersionSettings) ->
                 context.ir.symbols.konanSuspendCoroutineUninterceptedOrReturn.owner
 
-            descriptor == context.ir.symbols.coroutineContextGetter ->
+            symbol == context.ir.symbols.coroutineContextGetter ->
                 context.ir.symbols.konanCoroutineContextGetter.owner
 
             else -> (symbol.owner as? IrSimpleFunction)?.resolveFakeOverride() ?: symbol.owner
diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt
index a046b61e308..d4de8f4614a 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt
@@ -19,6 +19,7 @@ import org.jetbrains.kotlin.backend.konan.descriptors.isInterface
 import org.jetbrains.kotlin.backend.konan.descriptors.synthesizedName
 import org.jetbrains.kotlin.backend.konan.ir.*
 import org.jetbrains.kotlin.backend.konan.ir.companionObject
+import org.jetbrains.kotlin.backend.konan.ir.containsNull
 import org.jetbrains.kotlin.backend.konan.llvm.IntrinsicType
 import org.jetbrains.kotlin.backend.konan.llvm.llvmSymbolOrigin
 import org.jetbrains.kotlin.backend.konan.llvm.tryGetIntrinsicType
diff --git a/gradle.properties b/gradle.properties
index 5ab581f60dc..275b1e5a609 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -18,10 +18,10 @@
 buildKotlinVersion=1.3.50-dev-787
 buildKotlinCompilerRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_dev_Compiler),number:1.3.50-dev-787,branch:default:any,pinned:true/artifacts/content/maven
 remoteRoot=konan_tests
-kotlinCompilerRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_dev_Compiler),number:1.3.50-dev-1455,branch:default:any,pinned:true/artifacts/content/maven
-kotlinVersion=1.3.50-dev-1455
-kotlinStdlibRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_dev_Compiler),number:1.3.50-dev-1455,branch:default:any,pinned:true/artifacts/content/maven
-kotlinStdlibVersion=1.3.50-dev-1455
+kotlinCompilerRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_dev_Compiler),number:1.3.50-dev-1741,branch:default:any,pinned:true/artifacts/content/maven
+kotlinVersion=1.3.50-dev-1741
+kotlinStdlibRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_dev_Compiler),number:1.3.50-dev-1741,branch:default:any,pinned:true/artifacts/content/maven
+kotlinStdlibVersion=1.3.50-dev-1741
 testKotlinCompilerVersion=1.3.50-dev-1455
 konanVersion=1.3.50
 org.gradle.jvmargs='-Dfile.encoding=UTF-8'