Add tests for case when result of tail-call suspend function returning

Unit is not Unit.
 #KT-34703 Fixed

compiler/testData/codegen/box/coroutines/tailCallOptimizations/unitFunReturnsNonUnit.kt

@@ -0,0 +1,33 @@
+// TARGET_BACKEND: JVM
+// IGNORE_BACKEND: JVM_IR
+// FULL_JDK
+// WITH_RUNTIME
+// WITH_COROUTINES
+
+import helpers.*
+import kotlin.coroutines.*
+
+var c: Continuation<*>? = null
+
+suspend fun <T> tx(lambda: () -> T): T = suspendCoroutine { c = it; lambda() }
+
+object Dummy
+
+suspend fun suspect() {
+    tx { Dummy }
+}
+
+fun builder(c: suspend () -> Unit) {
+    c.startCoroutine(EmptyContinuation)
+}
+
+fun box(): String {
+    var res: Any? = null
+    builder {
+        res = suspect()
+    }
+
+    (c as? Continuation<Dummy>)?.resume(Dummy)
+
+    return if (res != Unit) "$res" else "OK"
+}

compiler/testData/codegen/box/coroutines/tailCallOptimizations/unitFunReturnsNonUnitCallSuspend.kt

@@ -0,0 +1,36 @@
+// TARGET_BACKEND: JVM
+// IGNORE_BACKEND: JVM_IR
+// FULL_JDK
+// WITH_RUNTIME
+// WITH_REFLECT
+// WITH_COROUTINES
+
+import helpers.*
+import kotlin.coroutines.*
+import kotlin.reflect.full.callSuspend
+import kotlin.reflect.KCallable
+
+var c: Continuation<*>? = null
+
+suspend fun <T> tx(lambda: () -> T): T = suspendCoroutine { c = it; lambda() }
+
+object Dummy
+
+suspend fun suspect() {
+    tx { Dummy }
+}
+
+fun builder(c: suspend () -> Unit) {
+    c.startCoroutine(EmptyContinuation)
+}
+
+fun box(): String {
+    var res: Any? = null
+    builder {
+        res = (::suspect as KCallable<*>).callSuspend()
+    }
+
+    (c as? Continuation<Dummy>)?.resume(Dummy)
+
+    return if (res != Unit) "$res" else "OK"
+}

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

@@ -8469,6 +8469,16 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
                 runTestWithPackageReplacement("compiler/testData/codegen/box/coroutines/tailCallOptimizations/tryCatch.kt", "kotlin.coroutines");
             }
 
+            @TestMetadata("unitFunReturnsNonUnit.kt")
+            public void testUnitFunReturnsNonUnit() throws Exception {
+                runTest("compiler/testData/codegen/box/coroutines/tailCallOptimizations/unitFunReturnsNonUnit.kt");
+            }
+
+            @TestMetadata("unitFunReturnsNonUnitCallSuspend.kt")
+            public void testUnitFunReturnsNonUnitCallSuspend() throws Exception {
+                runTest("compiler/testData/codegen/box/coroutines/tailCallOptimizations/unitFunReturnsNonUnitCallSuspend.kt");
+            }
+
             @TestMetadata("unreachable.kt")
             public void testUnreachable() throws Exception {
                 runTest("compiler/testData/codegen/box/coroutines/tailCallOptimizations/unreachable.kt");

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

@@ -8469,6 +8469,16 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
                 runTestWithPackageReplacement("compiler/testData/codegen/box/coroutines/tailCallOptimizations/tryCatch.kt", "kotlin.coroutines");
             }
 
+            @TestMetadata("unitFunReturnsNonUnit.kt")
+            public void testUnitFunReturnsNonUnit() throws Exception {
+                runTest("compiler/testData/codegen/box/coroutines/tailCallOptimizations/unitFunReturnsNonUnit.kt");
+            }
+
+            @TestMetadata("unitFunReturnsNonUnitCallSuspend.kt")
+            public void testUnitFunReturnsNonUnitCallSuspend() throws Exception {
+                runTest("compiler/testData/codegen/box/coroutines/tailCallOptimizations/unitFunReturnsNonUnitCallSuspend.kt");
+            }
+
             @TestMetadata("unreachable.kt")
             public void testUnreachable() throws Exception {
                 runTest("compiler/testData/codegen/box/coroutines/tailCallOptimizations/unreachable.kt");
@@ -18889,6 +18899,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             @TestDataPath("$PROJECT_ROOT")
             @RunWith(JUnit3RunnerWithInners.class)
             public static class IsInitializedAndDeinitialize extends AbstractLightAnalysisModeTest {
+                @TestMetadata("isInitializedMultiFile.kt")
+                public void ignoreIsInitializedMultiFile() throws Exception {
+                    runTest("compiler/testData/codegen/box/properties/lateinit/isInitializedAndDeinitialize/isInitializedMultiFile.kt");
+                }
+
                 private void runTest(String testDataFilePath) throws Exception {
                     KotlinTestUtils.runTest(this::doTest, TargetBackend.JVM, testDataFilePath);
                 }
@@ -18912,11 +18927,6 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
                     runTest("compiler/testData/codegen/box/properties/lateinit/isInitializedAndDeinitialize/innerSubclass.kt");
                 }
 
-                @TestMetadata("isInitializedMultiFile.kt")
-                public void testIsInitializedMultiFile() throws Exception {
-                    runTest("compiler/testData/codegen/box/properties/lateinit/isInitializedAndDeinitialize/isInitializedMultiFile.kt");
-                }
-
                 @TestMetadata("nonInlineLambda.kt")
                 public void testNonInlineLambda() throws Exception {
                     runTest("compiler/testData/codegen/box/properties/lateinit/isInitializedAndDeinitialize/nonInlineLambda.kt");

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

@@ -7404,6 +7404,16 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
                 runTestWithPackageReplacement("compiler/testData/codegen/box/coroutines/tailCallOptimizations/tryCatch.kt", "kotlin.coroutines");
             }
 
+            @TestMetadata("unitFunReturnsNonUnit.kt")
+            public void testUnitFunReturnsNonUnit() throws Exception {
+                runTest("compiler/testData/codegen/box/coroutines/tailCallOptimizations/unitFunReturnsNonUnit.kt");
+            }
+
+            @TestMetadata("unitFunReturnsNonUnitCallSuspend.kt")
+            public void testUnitFunReturnsNonUnitCallSuspend() throws Exception {
+                runTest("compiler/testData/codegen/box/coroutines/tailCallOptimizations/unitFunReturnsNonUnitCallSuspend.kt");
+            }
+
             @TestMetadata("unreachable.kt")
             public void testUnreachable() throws Exception {
                 runTest("compiler/testData/codegen/box/coroutines/tailCallOptimizations/unreachable.kt");