Make inline class wrapper constructor synthetic

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

@@ -255,13 +255,22 @@ public class AsmUtil {
             flags |= ACC_ABSTRACT;
         }
 
-        if (KotlinTypeMapper.isAccessor(functionDescriptor) || hasJvmSyntheticAnnotation(functionDescriptor)) {
+        if (KotlinTypeMapper.isAccessor(functionDescriptor) ||
+            hasJvmSyntheticAnnotation(functionDescriptor) ||
+            isInlineClassWrapperConstructor(functionDescriptor, kind)
+        ) {
             flags |= ACC_SYNTHETIC;
         }
 
         return flags;
     }
 
+    private static boolean isInlineClassWrapperConstructor(@NotNull FunctionDescriptor functionDescriptor, @NotNull OwnerKind kind) {
+        if (!(functionDescriptor instanceof ConstructorDescriptor)) return false;
+        ClassDescriptor classDescriptor = ((ConstructorDescriptor) functionDescriptor).getConstructedClass();
+        return classDescriptor.isInline() && kind == OwnerKind.IMPLEMENTATION;
+    }
+
     public static int getCommonCallableFlags(FunctionDescriptor functionDescriptor, @NotNull GenerationState state) {
         int flags = getVisibilityAccessFlag(functionDescriptor);
         flags |= getVarargsFlag(functionDescriptor);

compiler/testData/codegen/bytecodeListing/inlineClasses/companionObjectInsideInlineClass.txt

@@ -24,7 +24,7 @@ public final class Foo {
     private final field x: int
     inner class Foo$Companion
     static method <clinit>(): void
-    public method <init>(p0: int): void
+    public synthetic method <init>(p0: int): void
     public method equals(p0: java.lang.Object): boolean
     public final method getX(): int
     public method hashCode(): int

compiler/testData/codegen/bytecodeListing/inlineClasses/computablePropertiesInsideInlineClass.txt

@@ -13,7 +13,7 @@ static class Foo$Erased {
 @kotlin.Metadata
 public final class Foo {
     private final field x: int
-    public method <init>(p0: int): void
+    public synthetic method <init>(p0: int): void
     public method equals(p0: java.lang.Object): boolean
     public final method getX(): int
     public method hashCode(): int

compiler/testData/codegen/bytecodeListing/inlineClasses/inlineClassConstructors.txt

@@ -12,7 +12,7 @@ static class Foo$Erased {
 @kotlin.Metadata
 public final class Foo {
     private final field x: int
-    public method <init>(p0: int): void
+    public synthetic method <init>(p0: int): void
     public method equals(p0: java.lang.Object): boolean
     public final method getX(): int
     public method hashCode(): int

compiler/testData/codegen/bytecodeListing/inlineClasses/noBridgesForErasedInlineClass.txt

@@ -17,7 +17,7 @@ static class Foo$Erased {
 @kotlin.Metadata
 public final class Foo {
     private final field x: long
-    public method <init>(p0: long): void
+    public synthetic method <init>(p0: long): void
     public method equals(p0: java.lang.Object): boolean
     public synthetic method foo(p0: java.lang.Object): void
     public method foo-1e4ch6lh(p0: long): void

compiler/testData/codegen/bytecodeListing/inlineClasses/shapeOfInlineClassWithPrimitive.txt

@@ -14,7 +14,7 @@ static class Foo$Erased {
 @kotlin.Metadata
 public final class Foo {
     private final field l: long
-    public method <init>(p0: long): void
+    public synthetic method <init>(p0: long): void
     public method equals(p0: java.lang.Object): boolean
     public final method getL(): long
     public method hashCode(): int

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

@@ -6,5 +6,5 @@ class C1(val ss: Str)
 
 class C2(val ss1: Str, val ss2: Str)
 
-// 2 public \<init\>\(Ljava/lang/String;\)V
+// 1 public \<init\>\(Ljava/lang/String;\)V
 // 1 public \<init\>\(Ljava/lang/String;Ljava/lang/String;\)V

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

@@ -0,0 +1,6 @@
+// !LANGUAGE: +InlineClasses
+
+inline class Z(val x: Int)
+
+// 1 public synthetic <init>\(I\)V
+// 1 public static constructor\(I\)I

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

@@ -2113,6 +2113,11 @@ public class BytecodeTextTestGenerated extends AbstractBytecodeTextTest {
             runTest("compiler/testData/codegen/bytecodeText/inlineClasses/inlineClassExtendsErasedClass.kt");
         }
 
+        @TestMetadata("inlineClassWrapperPrimaryConstructorIsSynthetic.kt")
+        public void testInlineClassWrapperPrimaryConstructorIsSynthetic() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/inlineClasses/inlineClassWrapperPrimaryConstructorIsSynthetic.kt");
+        }
+
         @TestMetadata("inlineClassesUnboxingAfterAssertionOperator.kt")
         public void testInlineClassesUnboxingAfterAssertionOperator() throws Exception {
             runTest("compiler/testData/codegen/bytecodeText/inlineClasses/inlineClassesUnboxingAfterAssertionOperator.kt");