Support coroutines stack-unwinding in JVM backend

#KT-14924 In Progress

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

@@ -2810,7 +2810,7 @@ public class ExpressionCodegen extends KtVisitor<StackValue, StackValue> impleme
 
         if (CoroutineCodegenUtilKt.isSuspensionPoint(resolvedCall, bindingContext)) {
             // Suspension points should behave like they leave actual values on stack, while real methods return VOID
-            return new OperationStackValue(getSuspensionReturnTypeByResolvedCall(resolvedCall), ((OperationStackValue) result).getLambda());
+            return new OperationStackValue(getSuspensionBoxedReturnTypeByResolvedCall(resolvedCall), ((OperationStackValue) result).getLambda());
         }
 
         return result;
@@ -2925,7 +2925,7 @@ public class ExpressionCodegen extends KtVisitor<StackValue, StackValue> impleme
         }
 
         if (isSuspensionPoint) {
-            v.tconst(getSuspensionReturnTypeByResolvedCall(resolvedCall));
+            v.tconst(getSuspensionBoxedReturnTypeByResolvedCall(resolvedCall));
             v.invokestatic(
                     CoroutineCodegenUtilKt.COROUTINE_MARKER_OWNER,
                     CoroutineCodegenUtilKt.BEFORE_SUSPENSION_POINT_MARKER_NAME,
@@ -2935,7 +2935,6 @@ public class ExpressionCodegen extends KtVisitor<StackValue, StackValue> impleme
         callGenerator.genCall(callableMethod, resolvedCall, defaultMaskWasGenerated, this);
 
         if (isSuspensionPoint) {
-            AsmUtil.pushDefaultValueOnStack(getSuspensionReturnTypeByResolvedCall(resolvedCall), v);
             v.invokestatic(
                     CoroutineCodegenUtilKt.COROUTINE_MARKER_OWNER,
                     CoroutineCodegenUtilKt.AFTER_SUSPENSION_POINT_MARKER_NAME, "()V", false);
@@ -2950,7 +2949,7 @@ public class ExpressionCodegen extends KtVisitor<StackValue, StackValue> impleme
     }
 
     @NotNull
-    private Type getSuspensionReturnTypeByResolvedCall(@NotNull ResolvedCall<?> resolvedCall) {
+    private Type getSuspensionBoxedReturnTypeByResolvedCall(@NotNull ResolvedCall<?> resolvedCall) {
         assert resolvedCall.getResultingDescriptor() instanceof SimpleFunctionDescriptor
                 : "Suspension point resolved call should be built on SimpleFunctionDescriptor";
 
@@ -2963,7 +2962,7 @@ public class ExpressionCodegen extends KtVisitor<StackValue, StackValue> impleme
         KotlinType returnType = initialSignature.getReturnType();
 
         assert returnType != null : "Return type of suspension point should not be null";
-        return typeMapper.mapType(returnType);
+        return typeMapper.mapType(TypeUtils.makeNullable(returnType));
     }
 
     @NotNull

compiler/backend/src/org/jetbrains/kotlin/codegen/coroutines/CoroutineTransformationClassBuilder.kt

@@ -24,6 +24,7 @@ import org.jetbrains.kotlin.codegen.optimization.common.StrictBasicValue
 import org.jetbrains.kotlin.codegen.optimization.common.analyzeLiveness
 import org.jetbrains.kotlin.codegen.optimization.common.insnListOf
 import org.jetbrains.kotlin.codegen.optimization.common.removeEmptyCatchBlocks
+import org.jetbrains.kotlin.load.java.JvmAbi
 import org.jetbrains.kotlin.resolve.jvm.AsmTypes
 import org.jetbrains.kotlin.resolve.jvm.diagnostics.JvmDeclarationOrigin
 import org.jetbrains.kotlin.utils.sure
@@ -95,8 +96,10 @@ class CoroutineTransformerMethodVisitor(
 
         spillVariables(suspensionPoints, methodNode)
 
+        val suspendMarkerVarIndex = methodNode.maxLocals++
+
         val suspensionPointLabels = suspensionPoints.withIndex().map {
-            transformCallAndReturnContinuationLabel(it.index + 1, it.value, methodNode)
+            transformCallAndReturnContinuationLabel(it.index + 1, it.value, methodNode, suspendMarkerVarIndex)
         }
 
         methodNode.instructions.apply {
@@ -116,6 +119,13 @@ class CoroutineTransformerMethodVisitor(
             // tableswitch(this.label)
             insertBefore(firstToInsertBefore,
                          insnListOf(
+                                 FieldInsnNode(
+                                         Opcodes.GETSTATIC,
+                                         AsmTypes.COROUTINES_SUSPEND.internalName,
+                                         JvmAbi.INSTANCE_FIELD,
+                                         AsmTypes.COROUTINES_SUSPEND.descriptor
+                                 ),
+                                 VarInsnNode(Opcodes.ASTORE, suspendMarkerVarIndex),
                                  VarInsnNode(Opcodes.ALOAD, 0),
                                  FieldInsnNode(
                                          Opcodes.GETFIELD,
@@ -178,20 +188,16 @@ class CoroutineTransformerMethodVisitor(
                     methodNode.instructions.remove(beforeSuspensionPointMarker.previous)
                     beforeSuspensionPointMarker.desc = "()V"
 
-                    if (suspensionPoint.returnType != Type.VOID_TYPE) {
-                        val previous = suspensionPoint.suspensionCallEnd.previous
-                        assert(previous.opcode in DEFAULT_VALUE_OPCODES) {
-                            "Expected on of default value bytecodes, but ${previous.opcode} was found"
-                        }
-                        fakeReturnValueInsns.add(previous)
+                    assert(suspensionPoint.returnType != Type.VOID_TYPE) { "Suspension point can't be VOID" }
 
-                        if (previous.opcode == Opcodes.ACONST_NULL) {
-                            // Checkcast is needed to tell analyzer what type exactly should be returned from suspension point
-                            val checkCast = TypeInsnNode(Opcodes.CHECKCAST, suspensionPoint.returnType.internalName)
-                            methodNode.instructions.insert(previous, checkCast)
-                            fakeReturnValueInsns.add(checkCast)
-                        }
-                    }
+                    // Checkcast only is needed to tell analyzer what type exactly should be returned from suspension point
+                    // This type is used when for restoring spilled variables into fields
+                    val checkCast = TypeInsnNode(Opcodes.CHECKCAST, suspensionPoint.returnType.internalName)
+                    methodNode.instructions.insertBefore(
+                            suspensionPoint.suspensionCallEnd, checkCast
+                    )
+
+                    fakeReturnValueInsns.add(checkCast)
                 }
             }
         }
@@ -317,8 +323,14 @@ class CoroutineTransformerMethodVisitor(
             return suspensionCallEnd.next as LabelNode
         }
 
-    private fun transformCallAndReturnContinuationLabel(id: Int, suspension: SuspensionPoint, methodNode: MethodNode): LabelNode {
+    private fun transformCallAndReturnContinuationLabel(
+            id: Int,
+            suspension: SuspensionPoint,
+            methodNode: MethodNode,
+            suspendMarkerVarIndex: Int
+    ): LabelNode {
         val continuationLabel = LabelNode()
+        val continuationLabelAfterLoadedResult = LabelNode()
         with(methodNode.instructions) {
             // Save state
             insertBefore(suspension.suspensionCallBegin,
@@ -336,6 +348,10 @@ class CoroutineTransformerMethodVisitor(
             suspension.fakeReturnValueInsns.forEach { methodNode.instructions.remove(it) }
 
             insert(suspension.tryCatchBlockEndLabelAfterSuspensionCall, withInstructionAdapter {
+                dup()
+                load(suspendMarkerVarIndex, AsmTypes.COROUTINES_SUSPEND)
+                ifacmpne(continuationLabelAfterLoadedResult.label)
+
                 // Exit
                 areturn(Type.VOID_TYPE)
                 // Mark place for continuation
@@ -358,6 +374,8 @@ class CoroutineTransformerMethodVisitor(
 
                 // Load continuation argument just like suspending function returns it
                 load(1, AsmTypes.OBJECT_TYPE)
+
+                visitLabel(continuationLabelAfterLoadedResult.label)
                 StackValue.coerce(AsmTypes.OBJECT_TYPE, suspension.returnType, this)
             })
         }
@@ -371,8 +389,7 @@ class CoroutineTransformerMethodVisitor(
     // How suspension point area will look like after all transformations:
     // <spill variables>
     // INVOKESTATIC beforeSuspensionMarker
-    // INVOKEVIRTUAL suspensionMethod()V
-    // ACONST_NULL -- default value
+    // INVOKEVIRTUAL suspensionMethod()Ljava/lang/Object;
     // CHECKCAST SomeType
     // INVOKESTATIC afterSuspensionMarker
     // L1: -- end of all TCB's that are containing the suspension point (inserted by this method)
@@ -480,8 +497,7 @@ private fun Type.normalize() =
 /**
  * Suspension call may consists of several instructions:
  * INVOKESTATIC beforeSuspensionMarker
- * INVOKEVIRTUAL suspensionMethod()V // actually it could be some inline method instead of plain call
- * ACONST_NULL // It's only needed when the suspension point returns something beside VOID
+ * INVOKEVIRTUAL suspensionMethod()Ljava/lang/Object; // actually it could be some inline method instead of plain call
  * CHECKCAST Type
  * INVOKESTATIC afterSuspensionMarker
  */

compiler/backend/src/org/jetbrains/kotlin/codegen/coroutines/coroutineCodegenUtil.kt

@@ -189,7 +189,7 @@ fun ResolvedCall<*>.isSuspensionPoint(bindingContext: BindingContext) =
         bindingContext[BindingContext.COROUTINE_RECEIVER_FOR_SUSPENSION_POINT, call] != null
 
 // Suspend functions have irregular signatures on JVM, containing an additional last parameter with type `Continuation<return-type>`,
-// and return type Unit (later it will be replaced with 'Any?')
+// and return type Any?
 // This function returns a function descriptor reflecting how the suspend function looks from point of view of JVM
 fun <D : FunctionDescriptor> createJvmSuspendFunctionView(function: D): D {
     val continuationParameter = ValueParameterDescriptorImpl(
@@ -201,7 +201,7 @@ fun <D : FunctionDescriptor> createJvmSuspendFunctionView(function: D): D {
 
     return function.createCustomCopy {
         setPreserveSourceElement()
-        setReturnType(function.builtIns.unitType)
+        setReturnType(function.builtIns.nullableAnyType)
         setValueParameters(it.valueParameters + continuationParameter)
         putUserData(INITIAL_DESCRIPTOR_FOR_SUSPEND_FUNCTION, it)
     }
@@ -288,8 +288,7 @@ fun createMethodNodeForSuspendWithCurrentContinuation(
             "(${AsmTypes.OBJECT_TYPE})${AsmTypes.OBJECT_TYPE}",
             true
     )
-    node.visitInsn(Opcodes.POP)
-    node.visitInsn(Opcodes.RETURN)
+    node.visitInsn(Opcodes.ARETURN)
     node.visitMaxs(2, 2)
 
     return node

compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/AsmTypes.java

@@ -41,6 +41,7 @@ public class AsmTypes {
     public static final Type MUTABLE_PROPERTY_REFERENCE1 = Type.getObjectType("kotlin/jvm/internal/MutablePropertyReference1");
     public static final Type MUTABLE_PROPERTY_REFERENCE2 = Type.getObjectType("kotlin/jvm/internal/MutablePropertyReference2");
     public static final Type COROUTINE_IMPL = Type.getObjectType("kotlin/jvm/internal/CoroutineImpl");
+    public static final Type COROUTINES_SUSPEND = Type.getObjectType("kotlin/coroutines/Suspend");
 
 
     public static final Type[] PROPERTY_REFERENCE_IMPL = {

compiler/testData/codegen/box/coroutines/beginWithException.kt

@@ -7,7 +7,7 @@ class Controller {
         exception = t
     }
 
-    suspend fun suspendHere(): Any = suspendWithCurrentContinuation { x ->}
+    suspend fun suspendHere(): Any = suspendWithCurrentContinuation { x -> }
 
     // INTERCEPT_RESUME_PLACEHOLDER
 }

compiler/testData/codegen/box/coroutines/coercionToUnit.kt

@@ -7,6 +7,7 @@ class Controller {
 
     suspend fun <T> await(t: T): T = suspendWithCurrentContinuation { c ->
         c.resume(t)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/controlFlow/breakFinally.kt

@@ -7,6 +7,7 @@ class Controller {
 
     suspend fun <T> suspendWithResult(value: T): T = suspendWithCurrentContinuation { c ->
         c.resume(value)
+        Suspend
     }
 }
 

compiler/testData/codegen/box/coroutines/controlFlow/breakStatement.kt

@@ -7,6 +7,7 @@ class Controller {
 
     suspend fun <T> suspendWithResult(value: T): T = suspendWithCurrentContinuation { c ->
         c.resume(value)
+        Suspend
     }
 }
 

compiler/testData/codegen/box/coroutines/controlFlow/doWhileStatement.kt

@@ -7,6 +7,7 @@ class Controller {
 
     suspend fun <T> suspendWithResult(value: T): T = suspendWithCurrentContinuation { c ->
         c.resume(value)
+        Suspend
     }
 }
 

compiler/testData/codegen/box/coroutines/controlFlow/forContinue.kt

@@ -7,6 +7,7 @@ class Controller {
 
     suspend fun <T> suspendWithResult(value: T): T = suspendWithCurrentContinuation { c ->
         c.resume(value)
+        Suspend
     }
 }
 

compiler/testData/codegen/box/coroutines/controlFlow/forStatement.kt

@@ -7,6 +7,7 @@ class Controller {
 
     suspend fun <T> suspendWithResult(value: T): T = suspendWithCurrentContinuation { c ->
         c.resume(value)
+        Suspend
     }
 }
 

compiler/testData/codegen/box/coroutines/controlFlow/ifStatement.kt

@@ -7,6 +7,7 @@ class Controller {
 
     suspend fun <T> suspendWithResult(value: T): T = suspendWithCurrentContinuation { c ->
         c.resume(value)
+        Suspend
     }
 }
 

compiler/testData/codegen/box/coroutines/controlFlow/returnFromFinally.kt

@@ -12,6 +12,7 @@ class Controller {
     suspend fun <T> suspendAndLog(value: T): T = suspendWithCurrentContinuation { c ->
         result += "suspend($value);"
         c.resume(value)
+        Suspend
     }
 
     operator fun handleResult(value: String, c: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/controlFlow/switchLikeWhen.kt

@@ -8,6 +8,7 @@ class Controller {
     suspend fun <T> suspendWithResult(value: T): T = suspendWithCurrentContinuation { c ->
         result += "["
         c.resume(value)
+        Suspend
     }
 }
 

compiler/testData/codegen/box/coroutines/controlFlow/throwFromCatch.kt

@@ -8,11 +8,13 @@ class Controller {
     suspend fun <T> suspendAndLog(value: T): T = suspendWithCurrentContinuation { c ->
         result += "suspend($value);"
         c.resume(value)
+        Suspend
     }
 
     suspend fun suspendLogAndThrow(exception: Throwable): Nothing = suspendWithCurrentContinuation { c ->
         result += "throw(${exception.message});"
         c.resumeWithException(exception)
+        Suspend
     }
 
     operator fun handleException(exception: Throwable, c: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/controlFlow/throwInTryWithHandleResult.kt

@@ -8,6 +8,7 @@ class Controller {
     suspend fun <T> suspendAndLog(value: T): T = suspendWithCurrentContinuation { c ->
         result += "suspend($value);"
         c.resume(value)
+        Suspend
     }
 
     operator fun handleException(exception: Throwable, c: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/controlFlow/whileStatement.kt

@@ -7,6 +7,7 @@ class Controller {
 
     suspend fun <T> suspendWithResult(value: T): T = suspendWithCurrentContinuation { c ->
         c.resume(value)
+        Suspend
     }
 }
 

compiler/testData/codegen/box/coroutines/controllerAccessFromInnerLambda.kt

@@ -3,6 +3,7 @@ class Controller {
     var result = false
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume("OK")
+        Suspend
     }
 
     fun foo() {

compiler/testData/codegen/box/coroutines/defaultParametersInSuspend.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(a: String = "abc", i: Int = 2): String = suspendWithCurrentContinuation { x ->
         x.resume(a + "#" + (i + 1))
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/emptyClosure.kt

@@ -5,6 +5,7 @@ class Controller {
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         result++
         x.resume("OK")
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/falseUnitCoercion.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun <T> suspendHere(v: T): T = suspendWithCurrentContinuation { x ->
         x.resume(v)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/generate.kt

@@ -47,6 +47,8 @@ class GeneratorController<T>() : AbstractIterator<T>() {
     suspend fun yield(value: T): Unit = suspendWithCurrentContinuation { c ->
         setNext(value)
         setNextStep(c)
+
+        Suspend
     }
 
     operator fun handleResult(result: Unit, c: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/handleException.kt

@@ -8,12 +8,16 @@ class Controller {
         postponedActions.add {
             x.resume(v)
         }
+
+        Suspend
     }
 
     suspend fun suspendWithException(e: Exception): String = suspendWithCurrentContinuation { x ->
         postponedActions.add {
             x.resumeWithException(e)
         }
+
+        Suspend
     }
 
     operator fun handleException(t: Throwable, c: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/handleResultNonUnitExpression.kt

@@ -3,6 +3,7 @@ class Controller {
     var isCompleted = false
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume("OK")
+        Suspend
     }
 
     operator fun handleResult(x: Unit, y: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/handleResultSuspended.kt

@@ -5,6 +5,7 @@ class Controller {
     suspend fun <T> suspendAndLog(value: T): T = suspendWithCurrentContinuation { x ->
         log += "suspend($value);"
         x.resume(value)
+        Suspend
     }
 
     operator fun handleResult(value: String, y: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/illegalState.kt

@@ -5,6 +5,7 @@
 class Controller {
     suspend fun suspendHere(): Unit = suspendWithCurrentContinuation { x ->
         x.resume(Unit)
+        Suspend
     }
 }
 

compiler/testData/codegen/box/coroutines/inlineSuspendFunction.kt

@@ -11,6 +11,7 @@ class Controller {
 
     suspend inline fun suspendInline(v: String): String = suspendWithCurrentContinuation { x ->
         withValue(v, x)
+        Suspend
     }
 
     suspend inline fun suspendInline(crossinline b: () -> String): String = suspendInline(b())

compiler/testData/codegen/box/coroutines/inlinedTryCatchFinally.kt

@@ -9,12 +9,16 @@ class Controller {
         postponedActions.add {
             x.resume(v)
         }
+
+        Suspend
     }
 
     suspend fun suspendWithException(e: Exception): String = suspendWithCurrentContinuation { x ->
         postponedActions.add {
             x.resumeWithException(e)
         }
+
+        Suspend
     }
 
     operator fun handleResult(x: String, c: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/innerSuspensionCalls.kt

@@ -3,6 +3,7 @@ class Controller {
     var i = 0
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume((i++).toString())
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/instanceOfContinuation.kt

@@ -6,11 +6,13 @@ class Controller {
     suspend fun runInstanceOf(): Boolean = suspendWithCurrentContinuation { x ->
         val y: Any = x
         x.resume(x is Continuation<*>)
+        Suspend
     }
 
     suspend fun runCast(): Boolean = suspendWithCurrentContinuation { x ->
         val y: Any = x
         x.resume(Continuation::class.isInstance(y as Continuation<*>))
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/intLikeVarSpilling/complicatedMerge.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(): Unit = suspendWithCurrentContinuation { x ->
         x.resume(Unit)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/intLikeVarSpilling/i2bResult.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(): Unit = suspendWithCurrentContinuation { x ->
         x.resume(Unit)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/intLikeVarSpilling/loadFromBooleanArray.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(): Unit = suspendWithCurrentContinuation { x ->
         x.resume(Unit)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/intLikeVarSpilling/loadFromByteArray.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(): Unit = suspendWithCurrentContinuation { x ->
         x.resume(Unit)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/intLikeVarSpilling/noVariableInTable.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(): Unit = suspendWithCurrentContinuation { x ->
         x.resume(Unit)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/intLikeVarSpilling/sameIconst1ManyVars.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(): Unit = suspendWithCurrentContinuation { x ->
         x.resume(Unit)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInArrayStore.kt

@@ -4,6 +4,7 @@
 class Controller {
     suspend fun suspendHere(): Unit = suspendWithCurrentContinuation { x ->
         x.resume(Unit)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInMethodCall.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(): Unit = suspendWithCurrentContinuation { x ->
         x.resume(Unit)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInPutfield.kt

@@ -4,6 +4,7 @@
 class Controller {
     suspend fun suspendHere(): Unit = suspendWithCurrentContinuation { x ->
         x.resume(Unit)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInVarStore.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(): Unit = suspendWithCurrentContinuation { x ->
         x.resume(Unit)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/iterateOverArray.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume("OK")
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/kt12958.kt

@@ -3,6 +3,7 @@ class Controller {
     var result = "fail"
     suspend fun <V> suspendHere(v: V): V = suspendWithCurrentContinuation { x ->
         x.resume(v)
+        Suspend
     }
 
     operator fun handleResult(x: String, c: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/lambdaParameters.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(v: String): String = suspendWithCurrentContinuation { x ->
         x.resume(v)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/lastExpressionIsLoop.kt

@@ -5,6 +5,7 @@ class Controller {
     suspend fun suspendHere(v: String): Unit = suspendWithCurrentContinuation { x ->
         result += v
         x.resume(Unit)
+        Suspend
     }
 
     operator fun handleResult(u: Unit, v: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/lastStatementInc.kt

@@ -3,6 +3,7 @@ class Controller {
     var wasHandleResultCalled = false
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume("OK")
+        Suspend
     }
 
     operator fun handleResult(x: Unit, y: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/lastStementAssignment.kt

@@ -3,6 +3,7 @@ class Controller {
     var wasHandleResultCalled = false
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume("OK")
+        Suspend
     }
 
     operator fun handleResult(x: Unit, y: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/lastUnitExpression.kt

@@ -5,6 +5,7 @@ class Controller {
     suspend fun suspendHere(v: String): Unit = suspendWithCurrentContinuation { x ->
         this.v = v
         x.resume(Unit)
+        Suspend
     }
 
     operator fun handleResult(u: Unit, v: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/manualContinuationImpl.kt

@@ -3,6 +3,7 @@
 class Controller {
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume("OK")
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/multiModule/simple.kt

@@ -6,6 +6,7 @@ package lib
 class Controller {
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume("OK")
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/multiModule/suspendExtension.kt

@@ -7,6 +7,7 @@ package lib
 class Controller {
     suspend fun String.suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume(this)
+        Suspend
     }
 
     inline suspend fun String.inlineSuspendHere(): String = suspendHere()

compiler/testData/codegen/box/coroutines/multipleInvokeCalls.kt

@@ -4,7 +4,7 @@ class Controller {
     var result = "fail"
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         lastSuspension = x
-        Unit
+        Suspend
     }
 
     fun hasNext() = lastSuspension != null

compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda1.kt

@@ -4,7 +4,7 @@ class Controller {
     var result = "fail"
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         lastSuspension = x
-        Unit
+        Suspend
     }
 
     fun hasNext() = lastSuspension != null

compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda2.kt

@@ -4,7 +4,7 @@ class Controller {
     var result = "fail"
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         lastSuspension = x
-        Unit
+        Suspend
     }
 
     fun hasNext() = lastSuspension != null

compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda3.kt

@@ -4,7 +4,7 @@ class Controller {
     var result = "fail"
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         lastSuspension = x
-        Unit
+        Suspend
     }
 
     fun hasNext() = lastSuspension != null

compiler/testData/codegen/box/coroutines/nestedTryCatch.kt

@@ -9,12 +9,16 @@ class Controller {
         postponedActions.add {
             x.resume(v)
         }
+
+        Suspend
     }
 
     suspend fun suspendWithException(e: Exception): String = suspendWithCurrentContinuation { x ->
         postponedActions.add {
             x.resumeWithException(e)
         }
+
+        Suspend
     }
 
     operator fun handleResult(x: String, c: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/nonLocalReturnFromInlineLambda.kt

@@ -3,6 +3,7 @@ class Controller {
     var cResult = 0
     suspend fun suspendHere(v: Int): Int = suspendWithCurrentContinuation { x ->
         x.resume(v * 2)
+        Suspend
     }
 
     operator fun handleResult(x: Int, y: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/nonLocalReturnFromInlineLambdaDeep.kt

@@ -5,6 +5,7 @@ class Controller {
     var cResult = 0
     suspend fun suspendHere(v: Int): Int = suspendWithCurrentContinuation { x ->
         x.resume(v * 2)
+        Suspend
     }
 
     operator fun handleResult(x: Int, y: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/returnByLabel.kt

@@ -3,6 +3,7 @@ class Controller {
     var res = 0
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume("OK")
+        Suspend
     }
 
     operator fun handleResult(x: Int, y: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/simple.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume("OK")
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/simpleException.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resumeWithException(RuntimeException("OK"))
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/simpleWithHandleResult.kt

@@ -3,6 +3,7 @@ class Controller {
     var res = 0
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume("OK")
+        Suspend
     }
 
     operator fun handleResult(x: Int, y: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/stackUnwinding/exception.kt

@@ -0,0 +1,19 @@
+class Controller {
+    suspend fun suspendHere(): String = throw RuntimeException("OK")
+
+    // INTERCEPT_RESUME_PLACEHOLDER
+}
+
+fun builder(coroutine c: Controller.() -> Continuation<Unit>) {
+    c(Controller()).resume(Unit)
+}
+
+fun box(): String {
+    var result = ""
+
+    builder {
+        result = try { suspendHere() } catch (e: RuntimeException) { e.message!! }
+    }
+
+    return result
+}

compiler/testData/codegen/box/coroutines/stackUnwinding/inlineSuspendFunction.kt

@@ -0,0 +1,36 @@
+// WITH_RUNTIME
+// WITH_REFLECT
+// CHECK_NOT_CALLED: suspendInline_die06n$
+// CHECK_NOT_CALLED: suspendInline_nesahw$
+// CHECK_NOT_CALLED: suspendInline_grpnnl$
+class Controller {
+    suspend inline fun suspendInline(v: String): String = v
+
+    suspend inline fun suspendInline(crossinline b: () -> String): String = suspendInline(b())
+
+    suspend inline fun <reified T : Any> suspendInline(): String = suspendInline({ T::class.simpleName!! })
+
+    // INTERCEPT_RESUME_PLACEHOLDER
+}
+
+fun builder(coroutine c: Controller.() -> Continuation<Unit>) {
+    c(Controller()).resume(Unit)
+}
+
+class OK
+
+fun box(): String {
+    var result = ""
+
+    builder {
+        result = suspendInline("56")
+        if (result != "56") throw RuntimeException("fail 1")
+
+        result = suspendInline { "57" }
+        if (result != "57") throw RuntimeException("fail 2")
+
+        result = suspendInline<OK>()
+    }
+
+    return result
+}

compiler/testData/codegen/box/coroutines/stackUnwinding/simple.kt

@@ -0,0 +1,19 @@
+class Controller {
+    suspend fun suspendHere() = "OK"
+
+    // INTERCEPT_RESUME_PLACEHOLDER
+}
+
+fun builder(coroutine c: Controller.() -> Continuation<Unit>) {
+    c(Controller()).resume(Unit)
+}
+
+fun box(): String {
+    var result = ""
+
+    builder {
+        result = suspendHere()
+    }
+
+    return result
+}

compiler/testData/codegen/box/coroutines/stackUnwinding/suspendInCycle.kt

@@ -0,0 +1,47 @@
+// IGNORE_BACKEND: JS
+class Controller {
+    suspend fun suspendHere(): Int = suspendWithCurrentContinuation { x ->
+        1
+    }
+    suspend fun suspendThere(): String = suspendWithCurrentContinuation { x ->
+        "?"
+    }
+
+    // INTERCEPT_RESUME_PLACEHOLDER
+}
+
+fun builder(coroutine c: Controller.() -> Continuation<Unit>) {
+    c(Controller()).resume(Unit)
+}
+
+fun box(): String {
+    var result = ""
+
+    builder {
+        result += "-"
+        for (i in 0..10000) {
+            if (i % 2 == 0) {
+                result += suspendHere().toString()
+            }
+            else if (i == 3) {
+                result += suspendThere()
+            }
+        }
+        result += "+"
+    }
+
+    var mustBe = "-"
+    for (i in 0..10000) {
+        if (i % 2 == 0) {
+            mustBe += "1"
+        }
+        else if (i == 3) {
+            mustBe += "?"
+        }
+    }
+    mustBe += "+"
+
+    if (result != mustBe) return "fail: $result/$mustBe"
+
+    return "OK"
+}

compiler/testData/codegen/box/coroutines/statementLikeLastExpression.kt

@@ -3,6 +3,7 @@ var globalResult = ""
 class Controller {
     suspend fun suspendWithValue(v: String): String = suspendWithCurrentContinuation { x ->
         x.resume(v)
+        Suspend
     }
 
     operator fun handleResult(x: String, c: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/suspendDelegation.kt

@@ -4,6 +4,7 @@ class Controller {
 
     suspend fun suspendThere(): String = suspendWithCurrentContinuation { x ->
         x.resume("OK")
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/suspendExtension.kt

@@ -3,6 +3,7 @@
 class Controller {
     suspend fun String.suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume(this)
+        Suspend
     }
 
     inline suspend fun String.inlineSuspendHere(): String = suspendHere()

compiler/testData/codegen/box/coroutines/suspendFromInlineLambda.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(v: Int): Int = suspendWithCurrentContinuation { x ->
         x.resume(v * 2)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/suspendInCycle.kt

@@ -3,9 +3,11 @@ class Controller {
     var i = 0
     suspend fun suspendHere(): Int = suspendWithCurrentContinuation { x ->
         x.resume(i++)
+        Suspend
     }
     suspend fun suspendThere(): String = suspendWithCurrentContinuation { x ->
         x.resume("?")
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/suspendInTheMiddleOfObjectConstruction.kt

@@ -2,14 +2,17 @@
 class Controller {
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume("K")
+        Suspend
     }
 
     suspend fun suspendWithArgument(v: String): String = suspendWithCurrentContinuation { x ->
         x.resume(v)
+        Suspend
     }
 
     suspend fun suspendWithDouble(v: Double): Double = suspendWithCurrentContinuation { x ->
         x.resume(v)
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/tryCatchFinallyWithHandleResult.kt

@@ -9,12 +9,16 @@ class Controller {
         postponedActions.add {
             x.resume(v)
         }
+
+        Suspend
     }
 
     suspend fun suspendWithException(e: Exception): String = suspendWithCurrentContinuation { x ->
         postponedActions.add {
             x.resumeWithException(e)
         }
+
+        Suspend
     }
 
     operator fun handleResult(x: String, c: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/tryCatchWithHandleResult.kt

@@ -9,12 +9,16 @@ class Controller {
         postponedActions.add {
             x.resume(v)
         }
+
+        Suspend
     }
 
     suspend fun suspendWithException(e: Exception): String = suspendWithCurrentContinuation { x ->
         postponedActions.add {
             x.resumeWithException(e)
         }
+
+        Suspend
     }
 
     operator fun handleResult(x: String, c: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/tryFinallyInsideInlineLambda.kt

@@ -2,6 +2,8 @@
 class Controller {
     suspend fun suspendHere(v: String): String = suspendWithCurrentContinuation { x ->
         x.resume(v)
+
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/tryFinallyWithHandleResult.kt

@@ -9,12 +9,16 @@ class Controller {
         postponedActions.add {
             x.resume(v)
         }
+
+        Suspend
     }
 
     suspend fun suspendWithException(e: Exception): String = suspendWithCurrentContinuation { x ->
         postponedActions.add {
             x.resumeWithException(e)
         }
+
+        Suspend
     }
 
     operator fun handleResult(x: String, c: Continuation<Nothing>) {

compiler/testData/codegen/box/coroutines/varValueConflictsWithTable.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume("OK")
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/box/coroutines/varValueConflictsWithTableSameSort.kt

@@ -2,6 +2,7 @@
 class Controller {
     suspend fun suspendHere(): String = suspendWithCurrentContinuation { x ->
         x.resume("OK")
+        Suspend
     }
 
     // INTERCEPT_RESUME_PLACEHOLDER

compiler/testData/codegen/bytecodeListing/coroutineFields.txt

@@ -1,7 +1,7 @@
 @kotlin.Metadata
 public final class Controller {
     public method <init>(): void
-    public final method suspendHere(@org.jetbrains.annotations.NotNull p0: kotlin.coroutines.Continuation): void
+    public final @org.jetbrains.annotations.Nullable method suspendHere(@org.jetbrains.annotations.NotNull p0: kotlin.coroutines.Continuation): java.lang.Object
 }
 
 @kotlin.Metadata

compiler/testData/codegen/bytecodeText/constCoroutine.kt

@@ -19,4 +19,5 @@ fun box(): String {
 }
 
 // 1 GETSTATIC kotlin/Unit.INSTANCE : Lkotlin/Unit;
-// 1 GETSTATIC
+// 1 GETSTATIC kotlin/coroutines/Suspend.INSTANCE
+// 2 GETSTATIC

compiler/testData/codegen/java8/box/async.kt

@@ -60,6 +60,8 @@ class FutureController<T> {
             else
                 machine.resumeWithException(throwable)
         }
+
+        Suspend
     }
 
     operator fun handleResult(value: T, c: Continuation<Nothing>) {

compiler/testData/codegen/java8/box/asyncException.kt

@@ -56,6 +56,8 @@ class FutureController<T> {
             else
                 machine.resumeWithException(throwable)
         }
+
+        Suspend
     }
 
     operator fun handleResult(value: T, c: Continuation<Nothing>) {

compiler/testData/compileKotlinAgainstKotlin/coroutinesBinary.kt

@@ -3,6 +3,7 @@ package a
 class Controller {
     suspend fun suspendHere() = suspendWithCurrentContinuation<String> { x ->
         x.resume("OK")
+        Suspend
     }
 }
 

compiler/tests-ir-jvm/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxCodegenTestGenerated.java

@@ -4945,6 +4945,39 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
                 doTest(fileName);
             }
         }
+
+        @TestMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding")
+        @TestDataPath("$PROJECT_ROOT")
+        @RunWith(JUnit3RunnerWithInners.class)
+        public static class StackUnwinding extends AbstractIrBlackBoxCodegenTest {
+            public void testAllFilesPresentInStackUnwinding() throws Exception {
+                KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/codegen/box/coroutines/stackUnwinding"), Pattern.compile("^(.+)\\.kt$"), TargetBackend.JVM, true);
+            }
+
+            @TestMetadata("exception.kt")
+            public void testException() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/exception.kt");
+                doTest(fileName);
+            }
+
+            @TestMetadata("inlineSuspendFunction.kt")
+            public void testInlineSuspendFunction() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/inlineSuspendFunction.kt");
+                doTest(fileName);
+            }
+
+            @TestMetadata("simple.kt")
+            public void testSimple() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/simple.kt");
+                doTest(fileName);
+            }
+
+            @TestMetadata("suspendInCycle.kt")
+            public void testSuspendInCycle() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/suspendInCycle.kt");
+                doTest(fileName);
+            }
+        }
     }
 
     @TestMetadata("compiler/testData/codegen/box/dataClasses")

compiler/tests/org/jetbrains/kotlin/codegen/AdditionalCoroutineBlackBoxCodegenTestGenerated.java

@@ -423,4 +423,37 @@ public class AdditionalCoroutineBlackBoxCodegenTestGenerated extends AbstractAdd
             doTest(fileName);
         }
     }
+
+    @TestMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding")
+    @TestDataPath("$PROJECT_ROOT")
+    @RunWith(JUnit3RunnerWithInners.class)
+    public static class StackUnwinding extends AbstractAdditionalCoroutineBlackBoxCodegenTest {
+        public void testAllFilesPresentInStackUnwinding() throws Exception {
+            KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/codegen/box/coroutines/stackUnwinding"), Pattern.compile("^(.+)\\.kt$"), TargetBackend.ANY, true);
+        }
+
+        @TestMetadata("exception.kt")
+        public void testException() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/exception.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("inlineSuspendFunction.kt")
+        public void testInlineSuspendFunction() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/inlineSuspendFunction.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("simple.kt")
+        public void testSimple() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/simple.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("suspendInCycle.kt")
+        public void testSuspendInCycle() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/suspendInCycle.kt");
+            doTest(fileName);
+        }
+    }
 }

compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java

@@ -4945,6 +4945,39 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
                 doTest(fileName);
             }
         }
+
+        @TestMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding")
+        @TestDataPath("$PROJECT_ROOT")
+        @RunWith(JUnit3RunnerWithInners.class)
+        public static class StackUnwinding extends AbstractBlackBoxCodegenTest {
+            public void testAllFilesPresentInStackUnwinding() throws Exception {
+                KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/codegen/box/coroutines/stackUnwinding"), Pattern.compile("^(.+)\\.kt$"), TargetBackend.JVM, true);
+            }
+
+            @TestMetadata("exception.kt")
+            public void testException() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/exception.kt");
+                doTest(fileName);
+            }
+
+            @TestMetadata("inlineSuspendFunction.kt")
+            public void testInlineSuspendFunction() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/inlineSuspendFunction.kt");
+                doTest(fileName);
+            }
+
+            @TestMetadata("simple.kt")
+            public void testSimple() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/simple.kt");
+                doTest(fileName);
+            }
+
+            @TestMetadata("suspendInCycle.kt")
+            public void testSuspendInCycle() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/suspendInCycle.kt");
+                doTest(fileName);
+            }
+        }
     }
 
     @TestMetadata("compiler/testData/codegen/box/dataClasses")

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java

@@ -6152,6 +6152,45 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
                 throw new AssertionError("Looks like this test can be unmuted. Remove IGNORE_BACKEND directive for that.");
             }
         }
+
+        @TestMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding")
+        @TestDataPath("$PROJECT_ROOT")
+        @RunWith(JUnit3RunnerWithInners.class)
+        public static class StackUnwinding extends AbstractJsCodegenBoxTest {
+            public void testAllFilesPresentInStackUnwinding() throws Exception {
+                KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/codegen/box/coroutines/stackUnwinding"), Pattern.compile("^(.+)\\.kt$"), TargetBackend.JS, true);
+            }
+
+            @TestMetadata("exception.kt")
+            public void testException() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/exception.kt");
+                doTest(fileName);
+            }
+
+            @TestMetadata("inlineSuspendFunction.kt")
+            public void testInlineSuspendFunction() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/inlineSuspendFunction.kt");
+                doTest(fileName);
+            }
+
+            @TestMetadata("simple.kt")
+            public void testSimple() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/simple.kt");
+                doTest(fileName);
+            }
+
+            @TestMetadata("suspendInCycle.kt")
+            public void testSuspendInCycle() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/stackUnwinding/suspendInCycle.kt");
+                try {
+                    doTest(fileName);
+                }
+                catch (Throwable ignore) {
+                    return;
+                }
+                throw new AssertionError("Looks like this test can be unmuted. Remove IGNORE_BACKEND directive for that.");
+            }
+        }
     }
 
     @TestMetadata("compiler/testData/codegen/box/dataClasses")