Minor. Add tests to check returning Result from functions

Mainly, that virtual functions, returning Result, are mangled.
 #KT-45855

compiler/testData/codegen/box/inlineClasses/returnResult/class.kt

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+// KJS_WITH_FULL_RUNTIME
+
+class C {
+    fun foo(): Result<String> = Result.success("OK")
+}
+
+fun box() = C().foo().getOrThrow()

compiler/testData/codegen/box/inlineClasses/returnResult/classAnyOverride.kt

@@ -0,0 +1,16 @@
+// WITH_RUNTIME
+// KJS_WITH_FULL_RUNTIME
+
+interface I {
+    fun foo(): Any
+}
+
+class C : I {
+    override fun foo(): Result<String> = Result.success("OK")
+}
+
+
+fun box(): String {
+    if (((C() as I).foo() as Result<String>).getOrThrow() != "OK") return "FAIL 1"
+    return C().foo().getOrThrow()
+}

compiler/testData/codegen/box/inlineClasses/returnResult/classGenericOverride.kt

@@ -0,0 +1,15 @@
+// WITH_RUNTIME
+// KJS_WITH_FULL_RUNTIME
+
+interface I<T> {
+    fun foo(): T
+}
+
+class C : I<Result<String>> {
+    override fun foo(): Result<String> = Result.success("OK")
+}
+
+fun box(): String {
+    if (((C() as I<Result<String>>).foo() as Result<String>).getOrThrow() != "OK") return "FAIL 1"
+    return C().foo().getOrThrow()
+}

compiler/testData/codegen/box/inlineClasses/returnResult/classResultOverride.kt

@@ -0,0 +1,16 @@
+// WITH_RUNTIME
+// KJS_WITH_FULL_RUNTIME
+
+interface I {
+    fun foo(): Result<String>
+}
+
+class C : I {
+    override fun foo(): Result<String> = Result.success("OK")
+}
+
+
+fun box(): String {
+    if ((C() as I).foo().getOrThrow() != "OK") return "FAIL 1"
+    return C().foo().getOrThrow()
+}

compiler/testData/codegen/box/inlineClasses/returnResult/interface.kt

@@ -0,0 +1,10 @@
+// WITH_RUNTIME
+// KJS_WITH_FULL_RUNTIME
+
+interface I {
+    fun foo(): Result<String>
+}
+
+fun box() = object : I {
+    override fun foo() = Result.success("OK")
+}.foo().getOrThrow()

compiler/testData/codegen/box/inlineClasses/returnResult/topLevel.kt

@@ -0,0 +1,6 @@
+// WITH_RUNTIME
+// KJS_WITH_FULL_RUNTIME
+
+fun foo(): Result<String> = Result.success("OK")
+
+fun box() = foo().getOrThrow()

compiler/testData/codegen/bytecodeListing/inlineClasses/returnResult/class.kt

@@ -0,0 +1,6 @@
+// WITH_RUNTIME
+
+class C {
+    fun foo(): Result<Boolean> = TODO()
+}
+

compiler/testData/codegen/bytecodeListing/inlineClasses/returnResult/class.txt

@@ -0,0 +1,6 @@
+@kotlin.Metadata
+public final class C {
+    // source: 'class.kt'
+    public method <init>(): void
+    public final @org.jetbrains.annotations.NotNull method foo-d1pmJ48(): java.lang.Object
+}

compiler/testData/codegen/bytecodeListing/inlineClasses/returnResult/classAnyOverride.kt

@@ -0,0 +1,10 @@
+// WITH_RUNTIME
+
+interface I {
+    fun foo(): Any
+}
+
+class C : I {
+    override fun foo(): Result<Boolean> = TODO()
+}
+

compiler/testData/codegen/bytecodeListing/inlineClasses/returnResult/classAnyOverride.txt

@@ -0,0 +1,13 @@
+@kotlin.Metadata
+public final class C {
+    // source: 'classAnyOverride.kt'
+    public method <init>(): void
+    public synthetic bridge method foo(): java.lang.Object
+    public @org.jetbrains.annotations.NotNull method foo-d1pmJ48(): java.lang.Object
+}
+
+@kotlin.Metadata
+public interface I {
+    // source: 'classAnyOverride.kt'
+    public abstract @org.jetbrains.annotations.NotNull method foo(): java.lang.Object
+}

compiler/testData/codegen/bytecodeListing/inlineClasses/returnResult/classGenericOverride.kt

@@ -0,0 +1,10 @@
+// WITH_RUNTIME
+
+interface I<T> {
+    fun foo(): T = TODO()
+}
+
+class C : I<Result<Boolean>> {
+    override fun foo(): Result<Boolean> = TODO()
+}
+

compiler/testData/codegen/bytecodeListing/inlineClasses/returnResult/classGenericOverride.txt

@@ -0,0 +1,21 @@
+@kotlin.Metadata
+public final class C {
+    // source: 'classGenericOverride.kt'
+    public method <init>(): void
+    public synthetic bridge method foo(): java.lang.Object
+    public @org.jetbrains.annotations.NotNull method foo-d1pmJ48(): java.lang.Object
+}
+
+@kotlin.Metadata
+public final class I$DefaultImpls {
+    // source: 'classGenericOverride.kt'
+    public static method foo(@org.jetbrains.annotations.NotNull p0: I): java.lang.Object
+    public final inner class I$DefaultImpls
+}
+
+@kotlin.Metadata
+public interface I {
+    // source: 'classGenericOverride.kt'
+    public abstract method foo(): java.lang.Object
+    public final inner class I$DefaultImpls
+}

compiler/testData/codegen/bytecodeListing/inlineClasses/returnResult/classResultOverride.kt

@@ -0,0 +1,10 @@
+// WITH_RUNTIME
+
+interface I {
+    fun foo(): Result<Boolean>
+}
+
+class C : I {
+    override fun foo(): Result<Boolean> = TODO()
+}
+

compiler/testData/codegen/bytecodeListing/inlineClasses/returnResult/classResultOverride.txt

@@ -0,0 +1,12 @@
+@kotlin.Metadata
+public final class C {
+    // source: 'classResultOverride.kt'
+    public method <init>(): void
+    public @org.jetbrains.annotations.NotNull method foo-d1pmJ48(): java.lang.Object
+}
+
+@kotlin.Metadata
+public interface I {
+    // source: 'classResultOverride.kt'
+    public abstract @org.jetbrains.annotations.NotNull method foo-d1pmJ48(): java.lang.Object
+}

compiler/testData/codegen/bytecodeListing/inlineClasses/returnResult/interface.kt

@@ -0,0 +1,6 @@
+// WITH_RUNTIME
+
+interface I {
+    fun foo(): Result<Boolean>
+}
+

compiler/testData/codegen/bytecodeListing/inlineClasses/returnResult/interface.txt

@@ -0,0 +1,5 @@
+@kotlin.Metadata
+public interface I {
+    // source: 'interface.kt'
+    public abstract @org.jetbrains.annotations.NotNull method foo-d1pmJ48(): java.lang.Object
+}

compiler/testData/codegen/bytecodeListing/inlineClasses/returnResult/topLevel.kt

@@ -0,0 +1,3 @@
+// WITH_RUNTIME
+
+fun foo(): Result<Boolean> = TODO()

compiler/testData/codegen/bytecodeListing/inlineClasses/returnResult/topLevel.txt

@@ -0,0 +1,5 @@
+@kotlin.Metadata
+public final class TopLevelKt {
+    // source: 'topLevel.kt'
+    public final static @org.jetbrains.annotations.NotNull method foo(): java.lang.Object
+}