Fix generation of elvis with null constant for inline classes

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

@@ -356,11 +356,16 @@ public class ExpressionCodegen extends KtVisitor<StackValue, StackValue> impleme
         return (ScriptContext) context;
     }
 
-    public StackValue genLazy(KtElement expr, Type type) {
+    private StackValue genLazy(KtElement expr, Type type) {
         StackValue value = gen(expr);
         return StackValue.coercion(value, type, null);
     }
 
+    private StackValue genLazy(KtElement expr, Type type, KotlinType kotlinType) {
+        StackValue value = gen(expr);
+        return StackValue.coercion(value, type, kotlinType);
+    }
+
     private StackValue genStatement(KtElement statement) {
         return genQualified(StackValue.none(), statement, statementVisitor);
     }
@@ -3008,7 +3013,7 @@ public class ExpressionCodegen extends KtVisitor<StackValue, StackValue> impleme
             return StackValue.coercion(generateSafeQualifiedExpression((KtSafeQualifiedExpression) expression, ifnull), type, kotlinType);
         }
         else {
-            return genLazy(expression, type);
+            return genLazy(expression, type, kotlinType);
         }
     }
 

compiler/testData/codegen/box/inlineClasses/elvisWithInlineClassAndNullConstant.kt

@@ -0,0 +1,16 @@
+// !LANGUAGE: +InlineClasses
+
+inline class UInt(private val data: Int) {
+    fun result(): String = if (data == 1) "OK" else "fail"
+}
+
+fun f(): UInt {
+    val unull = UInt(1) ?: null
+    return nonNull(unull)
+}
+
+fun nonNull(u: UInt?) = u!!
+
+fun box(): String {
+    return f().result()
+}

compiler/testData/codegen/bytecodeText/inlineClasses/boxInlineClassInsideElvisWithNullConstant.kt

@@ -0,0 +1,13 @@
+// !LANGUAGE: +InlineClasses
+
+inline class UInt(private val data: Int)
+
+fun f() {
+    val unull = UInt(1) ?: null
+}
+
+// 1 INVOKESTATIC UInt\$Erased.box
+// 0 INVOKEVIRTUAL UInt.unbox
+
+// 0 valueOf
+// 0 intValue

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

@@ -11073,6 +11073,11 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/inlineClasses/createInlineClassInArgumentPosition.kt");
         }
 
+        @TestMetadata("elvisWithInlineClassAndNullConstant.kt")
+        public void testElvisWithInlineClassAndNullConstant() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/elvisWithInlineClassAndNullConstant.kt");
+        }
+
         @TestMetadata("emptyConstructorForInlineClass.kt")
         public void testEmptyConstructorForInlineClass() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/emptyConstructorForInlineClass.kt");

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

@@ -11073,6 +11073,11 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/inlineClasses/createInlineClassInArgumentPosition.kt");
         }
 
+        @TestMetadata("elvisWithInlineClassAndNullConstant.kt")
+        public void testElvisWithInlineClassAndNullConstant() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/elvisWithInlineClassAndNullConstant.kt");
+        }
+
         @TestMetadata("emptyConstructorForInlineClass.kt")
         public void testEmptyConstructorForInlineClass() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/emptyConstructorForInlineClass.kt");

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

@@ -1983,6 +1983,11 @@ public class BytecodeTextTestGenerated extends AbstractBytecodeTextTest {
             runTest("compiler/testData/codegen/bytecodeText/inlineClasses/assertionsForParametersOfInlineClassTypes.kt");
         }
 
+        @TestMetadata("boxInlineClassInsideElvisWithNullConstant.kt")
+        public void testBoxInlineClassInsideElvisWithNullConstant() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/inlineClasses/boxInlineClassInsideElvisWithNullConstant.kt");
+        }
+
         @TestMetadata("boxInlineClassesOnPassingToVarargs.kt")
         public void testBoxInlineClassesOnPassingToVarargs() throws Exception {
             runTest("compiler/testData/codegen/bytecodeText/inlineClasses/boxInlineClassesOnPassingToVarargs.kt");

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

@@ -11073,6 +11073,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/inlineClasses/createInlineClassInArgumentPosition.kt");
         }
 
+        @TestMetadata("elvisWithInlineClassAndNullConstant.kt")
+        public void testElvisWithInlineClassAndNullConstant() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/elvisWithInlineClassAndNullConstant.kt");
+        }
+
         @TestMetadata("emptyConstructorForInlineClass.kt")
         public void testEmptyConstructorForInlineClass() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/emptyConstructorForInlineClass.kt");

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

@@ -9630,6 +9630,11 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/inlineClasses/createInlineClassInArgumentPosition.kt");
         }
 
+        @TestMetadata("elvisWithInlineClassAndNullConstant.kt")
+        public void testElvisWithInlineClassAndNullConstant() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/elvisWithInlineClassAndNullConstant.kt");
+        }
+
         @TestMetadata("emptyConstructorForInlineClass.kt")
         public void testEmptyConstructorForInlineClass() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/emptyConstructorForInlineClass.kt");