diff --git a/compiler/testData/codegen/box/closures/capturedVarsOptimization/withCoroutines.kt b/compiler/testData/codegen/box/closures/capturedVarsOptimization/withCoroutines.kt
index c1bbf1a27d9..cfe5bee1565 100644
--- a/compiler/testData/codegen/box/closures/capturedVarsOptimization/withCoroutines.kt
+++ b/compiler/testData/codegen/box/closures/capturedVarsOptimization/withCoroutines.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/32defaultParametersInSuspend.kt b/compiler/testData/codegen/box/coroutines/32defaultParametersInSuspend.kt
index 6903dcf0a31..5fa1cbfede4 100644
--- a/compiler/testData/codegen/box/coroutines/32defaultParametersInSuspend.kt
+++ b/compiler/testData/codegen/box/coroutines/32defaultParametersInSuspend.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/accessorForSuspend.kt b/compiler/testData/codegen/box/coroutines/accessorForSuspend.kt
index 80d7e79a640..038df73732d 100644
--- a/compiler/testData/codegen/box/coroutines/accessorForSuspend.kt
+++ b/compiler/testData/codegen/box/coroutines/accessorForSuspend.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/asyncIterator.kt b/compiler/testData/codegen/box/coroutines/asyncIterator.kt
index 295062e2142..3207face102 100644
--- a/compiler/testData/codegen/box/coroutines/asyncIterator.kt
+++ b/compiler/testData/codegen/box/coroutines/asyncIterator.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/asyncIteratorToList.kt b/compiler/testData/codegen/box/coroutines/asyncIteratorToList.kt
index 5b08a0d107b..45baabe6c78 100644
--- a/compiler/testData/codegen/box/coroutines/asyncIteratorToList.kt
+++ b/compiler/testData/codegen/box/coroutines/asyncIteratorToList.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/await.kt b/compiler/testData/codegen/box/coroutines/await.kt
index 2a9d842c05d..307f949209a 100644
--- a/compiler/testData/codegen/box/coroutines/await.kt
+++ b/compiler/testData/codegen/box/coroutines/await.kt
@@ -1,6 +1,7 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
 // FILE: promise.kt
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
@@ -31,7 +32,7 @@ class Promise<T>(private val executor: ((T) -> Unit) -> Unit) {
 }
 
 // FILE: queue.kt
-
+import helpers.*
 private val queue = mutableListOf<() -> Unit>()
 
 fun <T> postpone(computation: () -> T): Promise<T> {
@@ -49,6 +50,7 @@ fun processQueue() {
 }
 
 // FILE: await.kt
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/beginWithException.kt b/compiler/testData/codegen/box/coroutines/beginWithException.kt
index e11a087a858..5f5b878833e 100644
--- a/compiler/testData/codegen/box/coroutines/beginWithException.kt
+++ b/compiler/testData/codegen/box/coroutines/beginWithException.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/beginWithExceptionNoHandleException.kt b/compiler/testData/codegen/box/coroutines/beginWithExceptionNoHandleException.kt
index 235c8c3075b..faf89dc6cae 100644
--- a/compiler/testData/codegen/box/coroutines/beginWithExceptionNoHandleException.kt
+++ b/compiler/testData/codegen/box/coroutines/beginWithExceptionNoHandleException.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 suspend fun suspendHere(): Any = suspendCoroutineOrReturn { x ->}
diff --git a/compiler/testData/codegen/box/coroutines/coercionToUnit.kt b/compiler/testData/codegen/box/coroutines/coercionToUnit.kt
index b748de8601d..b3d416e8776 100644
--- a/compiler/testData/codegen/box/coroutines/coercionToUnit.kt
+++ b/compiler/testData/codegen/box/coroutines/coercionToUnit.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/controlFlow/breakFinally.kt b/compiler/testData/codegen/box/coroutines/controlFlow/breakFinally.kt
index c9d6469c61a..272d02615f1 100644
--- a/compiler/testData/codegen/box/coroutines/controlFlow/breakFinally.kt
+++ b/compiler/testData/codegen/box/coroutines/controlFlow/breakFinally.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/controlFlow/breakStatement.kt b/compiler/testData/codegen/box/coroutines/controlFlow/breakStatement.kt
index d05c3b50e4b..7898ff7785f 100644
--- a/compiler/testData/codegen/box/coroutines/controlFlow/breakStatement.kt
+++ b/compiler/testData/codegen/box/coroutines/controlFlow/breakStatement.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/controlFlow/doWhileStatement.kt b/compiler/testData/codegen/box/coroutines/controlFlow/doWhileStatement.kt
index c6daeb7a1a0..452919efa28 100644
--- a/compiler/testData/codegen/box/coroutines/controlFlow/doWhileStatement.kt
+++ b/compiler/testData/codegen/box/coroutines/controlFlow/doWhileStatement.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/controlFlow/forContinue.kt b/compiler/testData/codegen/box/coroutines/controlFlow/forContinue.kt
index e07ea2612eb..1f2f0fe1544 100644
--- a/compiler/testData/codegen/box/coroutines/controlFlow/forContinue.kt
+++ b/compiler/testData/codegen/box/coroutines/controlFlow/forContinue.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/controlFlow/forStatement.kt b/compiler/testData/codegen/box/coroutines/controlFlow/forStatement.kt
index 1361c86f414..4ed50a3a673 100644
--- a/compiler/testData/codegen/box/coroutines/controlFlow/forStatement.kt
+++ b/compiler/testData/codegen/box/coroutines/controlFlow/forStatement.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/controlFlow/ifStatement.kt b/compiler/testData/codegen/box/coroutines/controlFlow/ifStatement.kt
index d3e0891127b..3cebc02ee03 100644
--- a/compiler/testData/codegen/box/coroutines/controlFlow/ifStatement.kt
+++ b/compiler/testData/codegen/box/coroutines/controlFlow/ifStatement.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/controlFlow/labeledWhile.kt b/compiler/testData/codegen/box/coroutines/controlFlow/labeledWhile.kt
index 0be9b8010fd..30f5cd8c1d7 100644
--- a/compiler/testData/codegen/box/coroutines/controlFlow/labeledWhile.kt
+++ b/compiler/testData/codegen/box/coroutines/controlFlow/labeledWhile.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
@@ -46,4 +47,4 @@ suspend fun suspendAndContinue(): Unit = suspendCoroutineOrReturn { c ->
 
 var postponed: () -> Unit = {}
 var finished = false
-var log = ""
\ No newline at end of file
+var log = ""
diff --git a/compiler/testData/codegen/box/coroutines/controlFlow/returnFromFinally.kt b/compiler/testData/codegen/box/coroutines/controlFlow/returnFromFinally.kt
index 01f19d05911..8d2efbbd2e3 100644
--- a/compiler/testData/codegen/box/coroutines/controlFlow/returnFromFinally.kt
+++ b/compiler/testData/codegen/box/coroutines/controlFlow/returnFromFinally.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/controlFlow/switchLikeWhen.kt b/compiler/testData/codegen/box/coroutines/controlFlow/switchLikeWhen.kt
index 47cb022c353..ab9a7bbeeb5 100644
--- a/compiler/testData/codegen/box/coroutines/controlFlow/switchLikeWhen.kt
+++ b/compiler/testData/codegen/box/coroutines/controlFlow/switchLikeWhen.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/controlFlow/throwFromCatch.kt b/compiler/testData/codegen/box/coroutines/controlFlow/throwFromCatch.kt
index 52d91402cb6..3b58b756534 100644
--- a/compiler/testData/codegen/box/coroutines/controlFlow/throwFromCatch.kt
+++ b/compiler/testData/codegen/box/coroutines/controlFlow/throwFromCatch.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/controlFlow/throwInTryWithHandleResult.kt b/compiler/testData/codegen/box/coroutines/controlFlow/throwInTryWithHandleResult.kt
index a1e9267f5fb..0ed5739fa11 100644
--- a/compiler/testData/codegen/box/coroutines/controlFlow/throwInTryWithHandleResult.kt
+++ b/compiler/testData/codegen/box/coroutines/controlFlow/throwInTryWithHandleResult.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/controlFlow/whileStatement.kt b/compiler/testData/codegen/box/coroutines/controlFlow/whileStatement.kt
index 2f3c622e3d0..4debc5952c4 100644
--- a/compiler/testData/codegen/box/coroutines/controlFlow/whileStatement.kt
+++ b/compiler/testData/codegen/box/coroutines/controlFlow/whileStatement.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/controllerAccessFromInnerLambda.kt b/compiler/testData/codegen/box/coroutines/controllerAccessFromInnerLambda.kt
index e1f965aac16..5b9aeb1adb1 100644
--- a/compiler/testData/codegen/box/coroutines/controllerAccessFromInnerLambda.kt
+++ b/compiler/testData/codegen/box/coroutines/controllerAccessFromInnerLambda.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/createCoroutineSafe.kt b/compiler/testData/codegen/box/coroutines/createCoroutineSafe.kt
index 063b58847f9..daed63fe077 100644
--- a/compiler/testData/codegen/box/coroutines/createCoroutineSafe.kt
+++ b/compiler/testData/codegen/box/coroutines/createCoroutineSafe.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/defaultParametersInSuspend.kt b/compiler/testData/codegen/box/coroutines/defaultParametersInSuspend.kt
index 9bf39a8e1e3..1337341d73b 100644
--- a/compiler/testData/codegen/box/coroutines/defaultParametersInSuspend.kt
+++ b/compiler/testData/codegen/box/coroutines/defaultParametersInSuspend.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/dispatchResume.kt b/compiler/testData/codegen/box/coroutines/dispatchResume.kt
index eba202028aa..4e3eb06ff79 100644
--- a/compiler/testData/codegen/box/coroutines/dispatchResume.kt
+++ b/compiler/testData/codegen/box/coroutines/dispatchResume.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/emptyClosure.kt b/compiler/testData/codegen/box/coroutines/emptyClosure.kt
index 984f5d9887e..24e96520a4f 100644
--- a/compiler/testData/codegen/box/coroutines/emptyClosure.kt
+++ b/compiler/testData/codegen/box/coroutines/emptyClosure.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/falseUnitCoercion.kt b/compiler/testData/codegen/box/coroutines/falseUnitCoercion.kt
index 5a0a32f9663..da69fb244b4 100644
--- a/compiler/testData/codegen/box/coroutines/falseUnitCoercion.kt
+++ b/compiler/testData/codegen/box/coroutines/falseUnitCoercion.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/featureIntersection/destructuringInLambdas.kt b/compiler/testData/codegen/box/coroutines/featureIntersection/destructuringInLambdas.kt
index ccd252770a7..719d2e11738 100644
--- a/compiler/testData/codegen/box/coroutines/featureIntersection/destructuringInLambdas.kt
+++ b/compiler/testData/codegen/box/coroutines/featureIntersection/destructuringInLambdas.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/featureIntersection/safeCallOnTwoReceivers.kt b/compiler/testData/codegen/box/coroutines/featureIntersection/safeCallOnTwoReceivers.kt
index dd2da5f3fb7..02c97d81531 100644
--- a/compiler/testData/codegen/box/coroutines/featureIntersection/safeCallOnTwoReceivers.kt
+++ b/compiler/testData/codegen/box/coroutines/featureIntersection/safeCallOnTwoReceivers.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 import kotlin.test.assertEquals
diff --git a/compiler/testData/codegen/box/coroutines/featureIntersection/safeCallOnTwoReceiversLong.kt b/compiler/testData/codegen/box/coroutines/featureIntersection/safeCallOnTwoReceiversLong.kt
index 1be7838af41..2e50e1f256a 100644
--- a/compiler/testData/codegen/box/coroutines/featureIntersection/safeCallOnTwoReceiversLong.kt
+++ b/compiler/testData/codegen/box/coroutines/featureIntersection/safeCallOnTwoReceiversLong.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 import kotlin.test.assertEquals
diff --git a/compiler/testData/codegen/box/coroutines/featureIntersection/suspendDestructuringInLambdas.kt b/compiler/testData/codegen/box/coroutines/featureIntersection/suspendDestructuringInLambdas.kt
index cd15d1c7a39..9cea4eda0fe 100644
--- a/compiler/testData/codegen/box/coroutines/featureIntersection/suspendDestructuringInLambdas.kt
+++ b/compiler/testData/codegen/box/coroutines/featureIntersection/suspendDestructuringInLambdas.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/featureIntersection/tailrec.kt b/compiler/testData/codegen/box/coroutines/featureIntersection/tailrec.kt
index db05670e584..7123da47133 100644
--- a/compiler/testData/codegen/box/coroutines/featureIntersection/tailrec.kt
+++ b/compiler/testData/codegen/box/coroutines/featureIntersection/tailrec.kt
@@ -1,5 +1,7 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+// IGNORE_BACKEND: NATIVE
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 import kotlin.test.assertEquals
diff --git a/compiler/testData/codegen/box/coroutines/generate.kt b/compiler/testData/codegen/box/coroutines/generate.kt
index 3a5526d17cc..9d769af94b0 100644
--- a/compiler/testData/codegen/box/coroutines/generate.kt
+++ b/compiler/testData/codegen/box/coroutines/generate.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // FULL_JDK
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/box/coroutines/handleException.kt b/compiler/testData/codegen/box/coroutines/handleException.kt
index 83f07670ff5..8e26112b72e 100644
--- a/compiler/testData/codegen/box/coroutines/handleException.kt
+++ b/compiler/testData/codegen/box/coroutines/handleException.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/handleResultCallEmptyBody.kt b/compiler/testData/codegen/box/coroutines/handleResultCallEmptyBody.kt
index 20bf73c9e0e..d76960c8fb3 100644
--- a/compiler/testData/codegen/box/coroutines/handleResultCallEmptyBody.kt
+++ b/compiler/testData/codegen/box/coroutines/handleResultCallEmptyBody.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/handleResultNonUnitExpression.kt b/compiler/testData/codegen/box/coroutines/handleResultNonUnitExpression.kt
index e39f079a618..29d1a5916f5 100644
--- a/compiler/testData/codegen/box/coroutines/handleResultNonUnitExpression.kt
+++ b/compiler/testData/codegen/box/coroutines/handleResultNonUnitExpression.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/handleResultSuspended.kt b/compiler/testData/codegen/box/coroutines/handleResultSuspended.kt
index d7ffca75fcb..194707f6e99 100644
--- a/compiler/testData/codegen/box/coroutines/handleResultSuspended.kt
+++ b/compiler/testData/codegen/box/coroutines/handleResultSuspended.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/illegalState.kt b/compiler/testData/codegen/box/coroutines/illegalState.kt
index 90c7c2bec8e..e05d0d5aeb3 100644
--- a/compiler/testData/codegen/box/coroutines/illegalState.kt
+++ b/compiler/testData/codegen/box/coroutines/illegalState.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TARGET_BACKEND: JVM
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/box/coroutines/inlineSuspendFunction.kt b/compiler/testData/codegen/box/coroutines/inlineSuspendFunction.kt
index f4b068062ae..9930735b6ff 100644
--- a/compiler/testData/codegen/box/coroutines/inlineSuspendFunction.kt
+++ b/compiler/testData/codegen/box/coroutines/inlineSuspendFunction.kt
@@ -1,6 +1,7 @@
 // IGNORE_BACKEND: NATIVE
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // WITH_REFLECT
 // CHECK_NOT_CALLED: suspendInline_61zpoe$
 // CHECK_NOT_CALLED: suspendInline_6r51u9$
diff --git a/compiler/testData/codegen/box/coroutines/inlinedTryCatchFinally.kt b/compiler/testData/codegen/box/coroutines/inlinedTryCatchFinally.kt
index 5aa0d35642f..1417a30a017 100644
--- a/compiler/testData/codegen/box/coroutines/inlinedTryCatchFinally.kt
+++ b/compiler/testData/codegen/box/coroutines/inlinedTryCatchFinally.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/innerSuspensionCalls.kt b/compiler/testData/codegen/box/coroutines/innerSuspensionCalls.kt
index 893313e1ebd..9a15bcf4111 100644
--- a/compiler/testData/codegen/box/coroutines/innerSuspensionCalls.kt
+++ b/compiler/testData/codegen/box/coroutines/innerSuspensionCalls.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/instanceOfContinuation.kt b/compiler/testData/codegen/box/coroutines/instanceOfContinuation.kt
index b0f08652215..b39aed2861b 100644
--- a/compiler/testData/codegen/box/coroutines/instanceOfContinuation.kt
+++ b/compiler/testData/codegen/box/coroutines/instanceOfContinuation.kt
@@ -1,6 +1,7 @@
 // IGNORE_BACKEND: NATIVE
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // WITH_REFLECT
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/complicatedMerge.kt b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/complicatedMerge.kt
index b76a6afee15..daf63a1d47b 100644
--- a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/complicatedMerge.kt
+++ b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/complicatedMerge.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/i2bResult.kt b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/i2bResult.kt
index b07c0563b2f..d991a7cc85b 100644
--- a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/i2bResult.kt
+++ b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/i2bResult.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/loadFromBooleanArray.kt b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/loadFromBooleanArray.kt
index 8e4184b4f4f..4aceec9ce80 100644
--- a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/loadFromBooleanArray.kt
+++ b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/loadFromBooleanArray.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/loadFromByteArray.kt b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/loadFromByteArray.kt
index d80336da7a9..242c5c0ec2a 100644
--- a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/loadFromByteArray.kt
+++ b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/loadFromByteArray.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/noVariableInTable.kt b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/noVariableInTable.kt
index 64cf6f7ba66..3f614fd8f35 100644
--- a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/noVariableInTable.kt
+++ b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/noVariableInTable.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/sameIconst1ManyVars.kt b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/sameIconst1ManyVars.kt
index 66c41f7f17d..8d879ef9b93 100644
--- a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/sameIconst1ManyVars.kt
+++ b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/sameIconst1ManyVars.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInArrayStore.kt b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInArrayStore.kt
index 607e62bf21d..e93b94f13e7 100644
--- a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInArrayStore.kt
+++ b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInArrayStore.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TARGET_BACKEND: JVM
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInMethodCall.kt b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInMethodCall.kt
index 754f98a689e..fbea445b8fa 100644
--- a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInMethodCall.kt
+++ b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInMethodCall.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInPutfield.kt b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInPutfield.kt
index 07f12615884..404f95df912 100644
--- a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInPutfield.kt
+++ b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInPutfield.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TARGET_BACKEND: JVM
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInVarStore.kt b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInVarStore.kt
index 4a86e948b31..4afdab1b92f 100644
--- a/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInVarStore.kt
+++ b/compiler/testData/codegen/box/coroutines/intLikeVarSpilling/usedInVarStore.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/intrinsicSemantics/startCoroutine.kt b/compiler/testData/codegen/box/coroutines/intrinsicSemantics/startCoroutine.kt
index fdb722e8560..ea431a3697c 100644
--- a/compiler/testData/codegen/box/coroutines/intrinsicSemantics/startCoroutine.kt
+++ b/compiler/testData/codegen/box/coroutines/intrinsicSemantics/startCoroutine.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 import kotlin.test.assertEquals
diff --git a/compiler/testData/codegen/box/coroutines/intrinsicSemantics/startCoroutineUninterceptedOrReturn.kt b/compiler/testData/codegen/box/coroutines/intrinsicSemantics/startCoroutineUninterceptedOrReturn.kt
index 7ccdef95424..5f91a55d81f 100644
--- a/compiler/testData/codegen/box/coroutines/intrinsicSemantics/startCoroutineUninterceptedOrReturn.kt
+++ b/compiler/testData/codegen/box/coroutines/intrinsicSemantics/startCoroutineUninterceptedOrReturn.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 import kotlin.test.assertEquals
diff --git a/compiler/testData/codegen/box/coroutines/intrinsicSemantics/startCoroutineUninterceptedOrReturnInterception.kt b/compiler/testData/codegen/box/coroutines/intrinsicSemantics/startCoroutineUninterceptedOrReturnInterception.kt
index f7352ff650c..6fcb2a1f7a2 100644
--- a/compiler/testData/codegen/box/coroutines/intrinsicSemantics/startCoroutineUninterceptedOrReturnInterception.kt
+++ b/compiler/testData/codegen/box/coroutines/intrinsicSemantics/startCoroutineUninterceptedOrReturnInterception.kt
@@ -1,5 +1,7 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+// IGNORE_BACKEND: NATIVE
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 import kotlin.test.assertEquals
diff --git a/compiler/testData/codegen/box/coroutines/iterateOverArray.kt b/compiler/testData/codegen/box/coroutines/iterateOverArray.kt
index a04c9b6cdf7..837df4220be 100644
--- a/compiler/testData/codegen/box/coroutines/iterateOverArray.kt
+++ b/compiler/testData/codegen/box/coroutines/iterateOverArray.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/kt12958.kt b/compiler/testData/codegen/box/coroutines/kt12958.kt
index f8d4ecddc51..898aa866d02 100644
--- a/compiler/testData/codegen/box/coroutines/kt12958.kt
+++ b/compiler/testData/codegen/box/coroutines/kt12958.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // WITH_CONTINUATION
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/box/coroutines/kt15016.kt b/compiler/testData/codegen/box/coroutines/kt15016.kt
index d64875ab1e8..b57740e55e7 100644
--- a/compiler/testData/codegen/box/coroutines/kt15016.kt
+++ b/compiler/testData/codegen/box/coroutines/kt15016.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 
 import kotlin.coroutines.experimental.intrinsics.COROUTINE_SUSPENDED
 import kotlin.coroutines.experimental.intrinsics.suspendCoroutineOrReturn
diff --git a/compiler/testData/codegen/box/coroutines/kt15017.kt b/compiler/testData/codegen/box/coroutines/kt15017.kt
index 7ea892a72de..8833e3c0d33 100644
--- a/compiler/testData/codegen/box/coroutines/kt15017.kt
+++ b/compiler/testData/codegen/box/coroutines/kt15017.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.startCoroutine
 
 class Controller {
diff --git a/compiler/testData/codegen/box/coroutines/lastExpressionIsLoop.kt b/compiler/testData/codegen/box/coroutines/lastExpressionIsLoop.kt
index c66a58230a1..0040d7d273d 100644
--- a/compiler/testData/codegen/box/coroutines/lastExpressionIsLoop.kt
+++ b/compiler/testData/codegen/box/coroutines/lastExpressionIsLoop.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/lastStatementInc.kt b/compiler/testData/codegen/box/coroutines/lastStatementInc.kt
index 61e2c26e3e1..01b91ba8a30 100644
--- a/compiler/testData/codegen/box/coroutines/lastStatementInc.kt
+++ b/compiler/testData/codegen/box/coroutines/lastStatementInc.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/lastStementAssignment.kt b/compiler/testData/codegen/box/coroutines/lastStementAssignment.kt
index 6e718c6c5bf..47bf76f5fa4 100644
--- a/compiler/testData/codegen/box/coroutines/lastStementAssignment.kt
+++ b/compiler/testData/codegen/box/coroutines/lastStementAssignment.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/lastUnitExpression.kt b/compiler/testData/codegen/box/coroutines/lastUnitExpression.kt
index b0cd8f5e999..d4ebf0b9400 100644
--- a/compiler/testData/codegen/box/coroutines/lastUnitExpression.kt
+++ b/compiler/testData/codegen/box/coroutines/lastUnitExpression.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/localCallableRef.kt b/compiler/testData/codegen/box/coroutines/localCallableRef.kt
index 016fdb06646..a1e04353a0b 100644
--- a/compiler/testData/codegen/box/coroutines/localCallableRef.kt
+++ b/compiler/testData/codegen/box/coroutines/localCallableRef.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/localDelegate.kt b/compiler/testData/codegen/box/coroutines/localDelegate.kt
index 1958e47b65b..c2147c44556 100644
--- a/compiler/testData/codegen/box/coroutines/localDelegate.kt
+++ b/compiler/testData/codegen/box/coroutines/localDelegate.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.COROUTINE_SUSPENDED
 import kotlin.coroutines.experimental.intrinsics.suspendCoroutineOrReturn
diff --git a/compiler/testData/codegen/box/coroutines/mergeNullAndString.kt b/compiler/testData/codegen/box/coroutines/mergeNullAndString.kt
index 5dff958abf9..56eef56af1d 100644
--- a/compiler/testData/codegen/box/coroutines/mergeNullAndString.kt
+++ b/compiler/testData/codegen/box/coroutines/mergeNullAndString.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/multiModule/inlineFunctionWithOptionalParam.kt b/compiler/testData/codegen/box/coroutines/multiModule/inlineFunctionWithOptionalParam.kt
index 8bd32078f68..3675315f0ca 100644
--- a/compiler/testData/codegen/box/coroutines/multiModule/inlineFunctionWithOptionalParam.kt
+++ b/compiler/testData/codegen/box/coroutines/multiModule/inlineFunctionWithOptionalParam.kt
@@ -4,10 +4,11 @@ inline fun foo(x: String = "OK"): String {
     return x + x
 }
 
-// MODULE: main(lib)
+// MODULE: main(lib, support)
 // FILE: main.kt
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/multiModule/simple.kt b/compiler/testData/codegen/box/coroutines/multiModule/simple.kt
index 905ef1eca6b..a495e263bf0 100644
--- a/compiler/testData/codegen/box/coroutines/multiModule/simple.kt
+++ b/compiler/testData/codegen/box/coroutines/multiModule/simple.kt
@@ -1,8 +1,9 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
-// MODULE: controller
+// MODULE: controller(support)
 // FILE: controller.kt
 package lib
+import helpers.*
 
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
@@ -17,6 +18,7 @@ class Controller {
 // MODULE: main(controller, support)
 // FILE: main.kt
 import lib.*
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/multipleInvokeCalls.kt b/compiler/testData/codegen/box/coroutines/multipleInvokeCalls.kt
index 0d2c85f9269..236984b79b8 100644
--- a/compiler/testData/codegen/box/coroutines/multipleInvokeCalls.kt
+++ b/compiler/testData/codegen/box/coroutines/multipleInvokeCalls.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda1.kt b/compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda1.kt
index 2d4fef59734..328d8a86bc8 100644
--- a/compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda1.kt
+++ b/compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda1.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda2.kt b/compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda2.kt
index 9e332c6a522..f9966c09e39 100644
--- a/compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda2.kt
+++ b/compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda2.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda3.kt b/compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda3.kt
index 3ae8ff00b88..261e28bbe76 100644
--- a/compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda3.kt
+++ b/compiler/testData/codegen/box/coroutines/multipleInvokeCallsInsideInlineLambda3.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/nestedTryCatch.kt b/compiler/testData/codegen/box/coroutines/nestedTryCatch.kt
index 42f2b2fcb9a..00f56d8a33c 100644
--- a/compiler/testData/codegen/box/coroutines/nestedTryCatch.kt
+++ b/compiler/testData/codegen/box/coroutines/nestedTryCatch.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/noSuspensionPoints.kt b/compiler/testData/codegen/box/coroutines/noSuspensionPoints.kt
index 407817b38dc..67f38388a8a 100644
--- a/compiler/testData/codegen/box/coroutines/noSuspensionPoints.kt
+++ b/compiler/testData/codegen/box/coroutines/noSuspensionPoints.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/nonLocalReturnFromInlineLambda.kt b/compiler/testData/codegen/box/coroutines/nonLocalReturnFromInlineLambda.kt
index dcc2aa2ea4f..e0c9fda657d 100644
--- a/compiler/testData/codegen/box/coroutines/nonLocalReturnFromInlineLambda.kt
+++ b/compiler/testData/codegen/box/coroutines/nonLocalReturnFromInlineLambda.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/nonLocalReturnFromInlineLambdaDeep.kt b/compiler/testData/codegen/box/coroutines/nonLocalReturnFromInlineLambdaDeep.kt
index 0b96c70729e..a7d30544230 100644
--- a/compiler/testData/codegen/box/coroutines/nonLocalReturnFromInlineLambdaDeep.kt
+++ b/compiler/testData/codegen/box/coroutines/nonLocalReturnFromInlineLambdaDeep.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/overrideDefaultArgument.kt b/compiler/testData/codegen/box/coroutines/overrideDefaultArgument.kt
index e8d3016fc1b..1ec19b6a9fc 100644
--- a/compiler/testData/codegen/box/coroutines/overrideDefaultArgument.kt
+++ b/compiler/testData/codegen/box/coroutines/overrideDefaultArgument.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
@@ -74,4 +75,4 @@ fun asyncSuspend(f: suspend () -> Unit) {
 
 var result = ""
 var proceed: () -> Unit = { }
-var finished = false
\ No newline at end of file
+var finished = false
diff --git a/compiler/testData/codegen/box/coroutines/recursiveSuspend.kt b/compiler/testData/codegen/box/coroutines/recursiveSuspend.kt
index 75d44d53540..c693392c26f 100644
--- a/compiler/testData/codegen/box/coroutines/recursiveSuspend.kt
+++ b/compiler/testData/codegen/box/coroutines/recursiveSuspend.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
@@ -38,4 +39,4 @@ fun builder(c: suspend () -> Unit) {
 
 var postponed: (() -> Unit)? = { }
 
-var log = ""
\ No newline at end of file
+var log = ""
diff --git a/compiler/testData/codegen/box/coroutines/returnByLabel.kt b/compiler/testData/codegen/box/coroutines/returnByLabel.kt
index 5e95df2c18a..81fa92a38f1 100644
--- a/compiler/testData/codegen/box/coroutines/returnByLabel.kt
+++ b/compiler/testData/codegen/box/coroutines/returnByLabel.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/simple.kt b/compiler/testData/codegen/box/coroutines/simple.kt
index 3949a59fc55..ae03b0d56af 100644
--- a/compiler/testData/codegen/box/coroutines/simple.kt
+++ b/compiler/testData/codegen/box/coroutines/simple.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/simpleException.kt b/compiler/testData/codegen/box/coroutines/simpleException.kt
index 161997d1900..2307339a201 100644
--- a/compiler/testData/codegen/box/coroutines/simpleException.kt
+++ b/compiler/testData/codegen/box/coroutines/simpleException.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/simpleWithHandleResult.kt b/compiler/testData/codegen/box/coroutines/simpleWithHandleResult.kt
index c1ff5344a56..f8bd4873718 100644
--- a/compiler/testData/codegen/box/coroutines/simpleWithHandleResult.kt
+++ b/compiler/testData/codegen/box/coroutines/simpleWithHandleResult.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/stackUnwinding/exception.kt b/compiler/testData/codegen/box/coroutines/stackUnwinding/exception.kt
index 3b8542609ac..efc497ee9e2 100644
--- a/compiler/testData/codegen/box/coroutines/stackUnwinding/exception.kt
+++ b/compiler/testData/codegen/box/coroutines/stackUnwinding/exception.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/stackUnwinding/inlineSuspendFunction.kt b/compiler/testData/codegen/box/coroutines/stackUnwinding/inlineSuspendFunction.kt
index a422357400e..6edf9a2358a 100644
--- a/compiler/testData/codegen/box/coroutines/stackUnwinding/inlineSuspendFunction.kt
+++ b/compiler/testData/codegen/box/coroutines/stackUnwinding/inlineSuspendFunction.kt
@@ -1,6 +1,7 @@
 // IGNORE_BACKEND: NATIVE
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // WITH_REFLECT
 // CHECK_NOT_CALLED: suspendInline_61zpoe$
 // CHECK_NOT_CALLED: suspendInline_6r51u9$
diff --git a/compiler/testData/codegen/box/coroutines/stackUnwinding/simple.kt b/compiler/testData/codegen/box/coroutines/stackUnwinding/simple.kt
index 8490f059c65..a68cf5d57db 100644
--- a/compiler/testData/codegen/box/coroutines/stackUnwinding/simple.kt
+++ b/compiler/testData/codegen/box/coroutines/stackUnwinding/simple.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/stackUnwinding/suspendInCycle.kt b/compiler/testData/codegen/box/coroutines/stackUnwinding/suspendInCycle.kt
index 949eb98b135..9e7f00ef2bc 100644
--- a/compiler/testData/codegen/box/coroutines/stackUnwinding/suspendInCycle.kt
+++ b/compiler/testData/codegen/box/coroutines/stackUnwinding/suspendInCycle.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/statementLikeLastExpression.kt b/compiler/testData/codegen/box/coroutines/statementLikeLastExpression.kt
index e0c534dcd9f..6742910c6ac 100644
--- a/compiler/testData/codegen/box/coroutines/statementLikeLastExpression.kt
+++ b/compiler/testData/codegen/box/coroutines/statementLikeLastExpression.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendCoroutineFromStateMachine.kt b/compiler/testData/codegen/box/coroutines/suspendCoroutineFromStateMachine.kt
index 0414efb0f85..99d50f8d734 100644
--- a/compiler/testData/codegen/box/coroutines/suspendCoroutineFromStateMachine.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendCoroutineFromStateMachine.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.suspendCoroutineOrReturn
 import kotlin.coroutines.experimental.intrinsics.COROUTINE_SUSPENDED
@@ -44,4 +45,4 @@ suspend fun wait2(): Unit = suspendCoroutineOrReturn { c ->
 
 var postponed: (() -> Unit)? = { }
 
-var log = ""
\ No newline at end of file
+var log = ""
diff --git a/compiler/testData/codegen/box/coroutines/suspendDefaultImpl.kt b/compiler/testData/codegen/box/coroutines/suspendDefaultImpl.kt
index 535f646fe2d..47f3b910a9b 100644
--- a/compiler/testData/codegen/box/coroutines/suspendDefaultImpl.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendDefaultImpl.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.startCoroutine
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendDelegation.kt b/compiler/testData/codegen/box/coroutines/suspendDelegation.kt
index 423bdabc38d..5de17bdedb8 100644
--- a/compiler/testData/codegen/box/coroutines/suspendDelegation.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendDelegation.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendFromInlineLambda.kt b/compiler/testData/codegen/box/coroutines/suspendFromInlineLambda.kt
index c018dba5681..c4599e8c742 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFromInlineLambda.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFromInlineLambda.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunImportedFromObject.kt b/compiler/testData/codegen/box/coroutines/suspendFunImportedFromObject.kt
index cc8ed7b6667..73233d3b3b6 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunImportedFromObject.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunImportedFromObject.kt
@@ -3,6 +3,7 @@
 
 // FILE: stuff.kt
 package stuff
+import helpers.*
 
 import kotlin.coroutines.experimental.intrinsics.*
 
@@ -15,6 +16,7 @@ object Host {
 
 
 // FILE: test.kt
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 import stuff.Host.suspendHere
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/augmentedAssignment.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/augmentedAssignment.kt
index 9151a5b6af6..b57aa353705 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/augmentedAssignment.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/augmentedAssignment.kt
@@ -1,6 +1,7 @@
 // IGNORE_BACKEND: JVM
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 
 // TODO: looks like this is a bug in JVM backend
 import kotlin.coroutines.experimental.*
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/dispatchResume.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/dispatchResume.kt
index b1e3c89fb50..4e2c9a69149 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/dispatchResume.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/dispatchResume.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/handleException.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/handleException.kt
index ccc3838bcd7..4088d4cc9f2 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/handleException.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/handleException.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/inline.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/inline.kt
index 484da635199..360e8d70bc1 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/inline.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/inline.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/inlineTwoReceivers.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/inlineTwoReceivers.kt
index 485d5897073..38629523faa 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/inlineTwoReceivers.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/inlineTwoReceivers.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.COROUTINE_SUSPENDED
 import kotlin.coroutines.experimental.intrinsics.suspendCoroutineOrReturn
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/member.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/member.kt
index 14f5c6d089b..f13526f6416 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/member.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/member.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/noinlineTwoReceivers.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/noinlineTwoReceivers.kt
index a67c2b935f0..62da22fa57d 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/noinlineTwoReceivers.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/noinlineTwoReceivers.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.COROUTINE_SUSPENDED
 import kotlin.coroutines.experimental.intrinsics.suspendCoroutineOrReturn
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/operators.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/operators.kt
index b09942baf2e..2b069d242d6 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/operators.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/operators.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 import kotlin.reflect.KProperty
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/privateFunctions.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/privateFunctions.kt
index cf95e3b1d0f..b8d8d409a18 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/privateFunctions.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/privateFunctions.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/privateInFile.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/privateInFile.kt
index 26954d16631..f29775db5f6 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/privateInFile.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/privateInFile.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/returnNoSuspend.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/returnNoSuspend.kt
index 6751108c537..ba957747645 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/returnNoSuspend.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/returnNoSuspend.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/simple.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/simple.kt
index 0fd4107a54a..211888c934c 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/simple.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/simple.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/withVariables.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/withVariables.kt
index 68617ba7227..7c2d1ca1c86 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/withVariables.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionAsCoroutine/withVariables.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionTypeCall/localVal.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionTypeCall/localVal.kt
index 0d95e70c76d..a8c381a5e64 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionTypeCall/localVal.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionTypeCall/localVal.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionTypeCall/manyParameters.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionTypeCall/manyParameters.kt
index fe815ef93f1..88c63c02c73 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionTypeCall/manyParameters.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionTypeCall/manyParameters.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendFunctionTypeCall/simple.kt b/compiler/testData/codegen/box/coroutines/suspendFunctionTypeCall/simple.kt
index e797beca64a..eee4b341107 100644
--- a/compiler/testData/codegen/box/coroutines/suspendFunctionTypeCall/simple.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendFunctionTypeCall/simple.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendInCycle.kt b/compiler/testData/codegen/box/coroutines/suspendInCycle.kt
index 40bef11b10a..345d7ecbfd5 100644
--- a/compiler/testData/codegen/box/coroutines/suspendInCycle.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendInCycle.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspendInTheMiddleOfObjectConstruction.kt b/compiler/testData/codegen/box/coroutines/suspendInTheMiddleOfObjectConstruction.kt
index f4f32779de0..6b567b1e0bf 100644
--- a/compiler/testData/codegen/box/coroutines/suspendInTheMiddleOfObjectConstruction.kt
+++ b/compiler/testData/codegen/box/coroutines/suspendInTheMiddleOfObjectConstruction.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspensionInsideSafeCall.kt b/compiler/testData/codegen/box/coroutines/suspensionInsideSafeCall.kt
index 9252012ee0c..91271e456fb 100644
--- a/compiler/testData/codegen/box/coroutines/suspensionInsideSafeCall.kt
+++ b/compiler/testData/codegen/box/coroutines/suspensionInsideSafeCall.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/suspensionInsideSafeCallWithElvis.kt b/compiler/testData/codegen/box/coroutines/suspensionInsideSafeCallWithElvis.kt
index a34c114d65f..2d4f6790b9d 100644
--- a/compiler/testData/codegen/box/coroutines/suspensionInsideSafeCallWithElvis.kt
+++ b/compiler/testData/codegen/box/coroutines/suspensionInsideSafeCallWithElvis.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/tailOperations/suspendWithIf.kt b/compiler/testData/codegen/box/coroutines/tailOperations/suspendWithIf.kt
index 9ff9c6fe814..1f1fcb98b80 100644
--- a/compiler/testData/codegen/box/coroutines/tailOperations/suspendWithIf.kt
+++ b/compiler/testData/codegen/box/coroutines/tailOperations/suspendWithIf.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/tailOperations/suspendWithTryCatch.kt b/compiler/testData/codegen/box/coroutines/tailOperations/suspendWithTryCatch.kt
index 666bdf4fb82..c3fe2873410 100644
--- a/compiler/testData/codegen/box/coroutines/tailOperations/suspendWithTryCatch.kt
+++ b/compiler/testData/codegen/box/coroutines/tailOperations/suspendWithTryCatch.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/tailOperations/suspendWithWhen.kt b/compiler/testData/codegen/box/coroutines/tailOperations/suspendWithWhen.kt
index 0829512e05e..5e0dc9747db 100644
--- a/compiler/testData/codegen/box/coroutines/tailOperations/suspendWithWhen.kt
+++ b/compiler/testData/codegen/box/coroutines/tailOperations/suspendWithWhen.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/tailOperations/tailInlining.kt b/compiler/testData/codegen/box/coroutines/tailOperations/tailInlining.kt
index 9c637bfb27a..3dc260dc183 100644
--- a/compiler/testData/codegen/box/coroutines/tailOperations/tailInlining.kt
+++ b/compiler/testData/codegen/box/coroutines/tailOperations/tailInlining.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 
 fun box(): String {
@@ -49,4 +50,4 @@ fun async(a: suspend () -> Unit) {
 
         override val context = EmptyCoroutineContext
     })
-}
\ No newline at end of file
+}
diff --git a/compiler/testData/codegen/box/coroutines/tryCatchFinallyWithHandleResult.kt b/compiler/testData/codegen/box/coroutines/tryCatchFinallyWithHandleResult.kt
index 556f281e9f7..6736cdbe9e0 100644
--- a/compiler/testData/codegen/box/coroutines/tryCatchFinallyWithHandleResult.kt
+++ b/compiler/testData/codegen/box/coroutines/tryCatchFinallyWithHandleResult.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/tryCatchWithHandleResult.kt b/compiler/testData/codegen/box/coroutines/tryCatchWithHandleResult.kt
index b8a1a2ae95e..2c720c010d2 100644
--- a/compiler/testData/codegen/box/coroutines/tryCatchWithHandleResult.kt
+++ b/compiler/testData/codegen/box/coroutines/tryCatchWithHandleResult.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/tryFinallyInsideInlineLambda.kt b/compiler/testData/codegen/box/coroutines/tryFinallyInsideInlineLambda.kt
index bca482fa815..4a6d7d0bf11 100644
--- a/compiler/testData/codegen/box/coroutines/tryFinallyInsideInlineLambda.kt
+++ b/compiler/testData/codegen/box/coroutines/tryFinallyInsideInlineLambda.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/tryFinallyWithHandleResult.kt b/compiler/testData/codegen/box/coroutines/tryFinallyWithHandleResult.kt
index 568a20b0f0c..9c2d48c87b2 100644
--- a/compiler/testData/codegen/box/coroutines/tryFinallyWithHandleResult.kt
+++ b/compiler/testData/codegen/box/coroutines/tryFinallyWithHandleResult.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/unitTypeReturn/coroutineNonLocalReturn.kt b/compiler/testData/codegen/box/coroutines/unitTypeReturn/coroutineNonLocalReturn.kt
index c4e4d577a41..e8dfb09649b 100644
--- a/compiler/testData/codegen/box/coroutines/unitTypeReturn/coroutineNonLocalReturn.kt
+++ b/compiler/testData/codegen/box/coroutines/unitTypeReturn/coroutineNonLocalReturn.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/unitTypeReturn/coroutineReturn.kt b/compiler/testData/codegen/box/coroutines/unitTypeReturn/coroutineReturn.kt
index a9ea599524b..623e3dbb236 100644
--- a/compiler/testData/codegen/box/coroutines/unitTypeReturn/coroutineReturn.kt
+++ b/compiler/testData/codegen/box/coroutines/unitTypeReturn/coroutineReturn.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/unitTypeReturn/suspendNonLocalReturn.kt b/compiler/testData/codegen/box/coroutines/unitTypeReturn/suspendNonLocalReturn.kt
index ce54742b4b1..4b1dbf6ddcc 100644
--- a/compiler/testData/codegen/box/coroutines/unitTypeReturn/suspendNonLocalReturn.kt
+++ b/compiler/testData/codegen/box/coroutines/unitTypeReturn/suspendNonLocalReturn.kt
@@ -1,6 +1,7 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
 // IGNORE_BACKEND: JS
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/unitTypeReturn/suspendReturn.kt b/compiler/testData/codegen/box/coroutines/unitTypeReturn/suspendReturn.kt
index 171f24a3422..3430a0d10ad 100644
--- a/compiler/testData/codegen/box/coroutines/unitTypeReturn/suspendReturn.kt
+++ b/compiler/testData/codegen/box/coroutines/unitTypeReturn/suspendReturn.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/varSpilling/nullSpilling.kt b/compiler/testData/codegen/box/coroutines/varSpilling/nullSpilling.kt
index e3f75d35f15..0f09377dbfa 100644
--- a/compiler/testData/codegen/box/coroutines/varSpilling/nullSpilling.kt
+++ b/compiler/testData/codegen/box/coroutines/varSpilling/nullSpilling.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/varValueConflictsWithTable.kt b/compiler/testData/codegen/box/coroutines/varValueConflictsWithTable.kt
index cb7d794eb9b..fa02930895c 100644
--- a/compiler/testData/codegen/box/coroutines/varValueConflictsWithTable.kt
+++ b/compiler/testData/codegen/box/coroutines/varValueConflictsWithTable.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/box/coroutines/varValueConflictsWithTableSameSort.kt b/compiler/testData/codegen/box/coroutines/varValueConflictsWithTableSameSort.kt
index 8c4a25b2131..024392c2b04 100644
--- a/compiler/testData/codegen/box/coroutines/varValueConflictsWithTableSameSort.kt
+++ b/compiler/testData/codegen/box/coroutines/varValueConflictsWithTableSameSort.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 
diff --git a/compiler/testData/codegen/bytecodeText/constCoroutine.kt b/compiler/testData/codegen/bytecodeText/constCoroutine.kt
index 0d650447eaa..ba21f2939e7 100644
--- a/compiler/testData/codegen/bytecodeText/constCoroutine.kt
+++ b/compiler/testData/codegen/bytecodeText/constCoroutine.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TREAT_AS_ONE_FILE
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
@@ -21,6 +22,6 @@ fun box(): String {
 }
 
 // 2 GETSTATIC kotlin/Unit.INSTANCE
-// 1 GETSTATIC EmptyContinuation.Companion
+// 1 GETSTATIC helpers/EmptyContinuation.Companion
 // 3 GETSTATIC kotlin\/coroutines\/experimental\/EmptyCoroutineContext.INSTANCE
 // 6 GETSTATIC
diff --git a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/complicatedMerge.kt b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/complicatedMerge.kt
index 58d907569fb..66fb3b668b6 100644
--- a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/complicatedMerge.kt
+++ b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/complicatedMerge.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TREAT_AS_ONE_FILE
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/i2bResult.kt b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/i2bResult.kt
index 3554ee3cf97..10ca2521b92 100644
--- a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/i2bResult.kt
+++ b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/i2bResult.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TREAT_AS_ONE_FILE
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/loadFromBooleanArray.kt b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/loadFromBooleanArray.kt
index 3532109fa16..1e445cca764 100644
--- a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/loadFromBooleanArray.kt
+++ b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/loadFromBooleanArray.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TREAT_AS_ONE_FILE
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/loadFromByteArray.kt b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/loadFromByteArray.kt
index 0ca74ac2610..bc12c12ac5e 100644
--- a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/loadFromByteArray.kt
+++ b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/loadFromByteArray.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TREAT_AS_ONE_FILE
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/noVariableInTable.kt b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/noVariableInTable.kt
index 3e61704de7e..15a232015f9 100644
--- a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/noVariableInTable.kt
+++ b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/noVariableInTable.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TREAT_AS_ONE_FILE
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/sameIconst1ManyVars.kt b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/sameIconst1ManyVars.kt
index facb49aa9ff..8a218104ec8 100644
--- a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/sameIconst1ManyVars.kt
+++ b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/sameIconst1ManyVars.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TREAT_AS_ONE_FILE
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInArrayStore.kt b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInArrayStore.kt
index 577bc871ad0..7e9a13076b3 100644
--- a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInArrayStore.kt
+++ b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInArrayStore.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TREAT_AS_ONE_FILE
 // TARGET_BACKEND: JVM
 import kotlin.coroutines.experimental.*
diff --git a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInMethodCall.kt b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInMethodCall.kt
index 4698f7c7956..414e826aa58 100644
--- a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInMethodCall.kt
+++ b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInMethodCall.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TREAT_AS_ONE_FILE
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInPutfield.kt b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInPutfield.kt
index e59dc3a527e..e9874d4483d 100644
--- a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInPutfield.kt
+++ b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInPutfield.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TREAT_AS_ONE_FILE
 // TARGET_BACKEND: JVM
 import kotlin.coroutines.experimental.*
diff --git a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInVarStore.kt b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInVarStore.kt
index 3f07e1870b0..6f8a8ab3492 100644
--- a/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInVarStore.kt
+++ b/compiler/testData/codegen/bytecodeText/coroutines/intLikeVarSpilling/usedInVarStore.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TREAT_AS_ONE_FILE
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/bytecodeText/coroutines/varValueConflictsWithTable.kt b/compiler/testData/codegen/bytecodeText/coroutines/varValueConflictsWithTable.kt
index 9c7dcd7afbc..9228283062a 100644
--- a/compiler/testData/codegen/bytecodeText/coroutines/varValueConflictsWithTable.kt
+++ b/compiler/testData/codegen/bytecodeText/coroutines/varValueConflictsWithTable.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TREAT_AS_ONE_FILE
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/testData/codegen/bytecodeText/coroutines/varValueConflictsWithTableSameSort.kt b/compiler/testData/codegen/bytecodeText/coroutines/varValueConflictsWithTableSameSort.kt
index 231ee8e82f6..88f1393918c 100644
--- a/compiler/testData/codegen/bytecodeText/coroutines/varValueConflictsWithTableSameSort.kt
+++ b/compiler/testData/codegen/bytecodeText/coroutines/varValueConflictsWithTableSameSort.kt
@@ -1,5 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
+import helpers.*
 // TREAT_AS_ONE_FILE
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
diff --git a/compiler/tests-common/org/jetbrains/kotlin/test/KotlinTestUtils.java b/compiler/tests-common/org/jetbrains/kotlin/test/KotlinTestUtils.java
index 243bc5b1bc4..1839751f869 100644
--- a/compiler/tests-common/org/jetbrains/kotlin/test/KotlinTestUtils.java
+++ b/compiler/tests-common/org/jetbrains/kotlin/test/KotlinTestUtils.java
@@ -685,6 +685,7 @@ public class KotlinTestUtils {
             M supportModule = hasModules ? factory.createModule("support", Collections.emptyList(), Collections.emptyList()) : null;
             testFiles.add(factory.createFile(supportModule,
                                              "CoroutineUtil.kt",
+                                             "package helpers\n" +
                                              "import kotlin.coroutines.experimental.*\n" +
                                              "fun <T> handleResultContinuation(x: (T) -> Unit): Continuation<T> = object: Continuation<T> {\n" +
                                              "    override val context = EmptyCoroutineContext\n" +