KT-23397 Optimize out field for property delegate when it's safe (JVM)

compiler/testData/codegen/box/delegatedProperty/delegateToThis/delegateToOuterThis.kt

@@ -0,0 +1,13 @@
+// WITH_STDLIB
+// CHECK_BYTECODE_LISTING
+
+class O {
+    operator fun getValue(thisRef: Any?, property: Any?) =
+        if (thisRef is I) "OK" else "Failed"
+
+    inner class I {
+        val s: String by this@O
+    }
+}
+
+fun box() = O().I().s

compiler/testData/codegen/box/delegatedProperty/delegateToThis/delegateToOuterThis.txt

@@ -0,0 +1,25 @@
+@kotlin.Metadata
+public final class DelegateToOuterThisKt {
+    // source: 'delegateToOuterThis.kt'
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+}
+
+@kotlin.Metadata
+public final class O$I {
+    // source: 'delegateToOuterThis.kt'
+    synthetic final static field $$delegatedProperties: kotlin.reflect.KProperty[]
+    private final @org.jetbrains.annotations.NotNull field s$delegate: O
+    synthetic final field this$0: O
+    static method <clinit>(): void
+    public method <init>(p0: O): void
+    public final @org.jetbrains.annotations.NotNull method getS(): java.lang.String
+    public final inner class O$I
+}
+
+@kotlin.Metadata
+public final class O {
+    // source: 'delegateToOuterThis.kt'
+    public method <init>(): void
+    public final @org.jetbrains.annotations.NotNull method getValue(@org.jetbrains.annotations.Nullable p0: java.lang.Object, @org.jetbrains.annotations.Nullable p1: java.lang.Object): java.lang.String
+    public final inner class O$I
+}

compiler/testData/codegen/box/delegatedProperty/delegateToThis/delegateToOuterThis_ir.txt

@@ -0,0 +1,25 @@
+@kotlin.Metadata
+public final class DelegateToOuterThisKt {
+    // source: 'delegateToOuterThis.kt'
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+}
+
+@kotlin.Metadata
+public final class O$I {
+    // source: 'delegateToOuterThis.kt'
+    synthetic final static field $$delegatedProperties: kotlin.reflect.KProperty[]
+    synthetic final field this$0: O
+    static method <clinit>(): void
+    public method <init>(p0: O): void
+    private static method getS$delegate(p0: O$I): java.lang.Object
+    public final @org.jetbrains.annotations.NotNull method getS(): java.lang.String
+    public final inner class O$I
+}
+
+@kotlin.Metadata
+public final class O {
+    // source: 'delegateToOuterThis.kt'
+    public method <init>(): void
+    public final @org.jetbrains.annotations.NotNull method getValue(@org.jetbrains.annotations.Nullable p0: java.lang.Object, @org.jetbrains.annotations.Nullable p1: java.lang.Object): java.lang.String
+    public final inner class O$I
+}

compiler/testData/codegen/box/delegatedProperty/delegateToThis/delegateToThis.kt

@@ -0,0 +1,11 @@
+// WITH_STDLIB
+// CHECK_BYTECODE_LISTING
+
+class C {
+    operator fun getValue(thisRef: Any?, property: Any?) =
+        if (thisRef == this) "OK" else "Failed"
+
+    val s: String by this
+}
+
+fun box() = C().s

compiler/testData/codegen/box/delegatedProperty/delegateToThis/delegateToThis.txt

@@ -0,0 +1,16 @@
+@kotlin.Metadata
+public final class C {
+    // source: 'delegateToThis.kt'
+    synthetic final static field $$delegatedProperties: kotlin.reflect.KProperty[]
+    private final @org.jetbrains.annotations.NotNull field s$delegate: C
+    static method <clinit>(): void
+    public method <init>(): void
+    public final @org.jetbrains.annotations.NotNull method getS(): java.lang.String
+    public final @org.jetbrains.annotations.NotNull method getValue(@org.jetbrains.annotations.Nullable p0: java.lang.Object, @org.jetbrains.annotations.Nullable p1: java.lang.Object): java.lang.String
+}
+
+@kotlin.Metadata
+public final class DelegateToThisKt {
+    // source: 'delegateToThis.kt'
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+}

compiler/testData/codegen/box/delegatedProperty/delegateToThis/delegateToThisByExtension.kt

@@ -0,0 +1,13 @@
+// WITH_STDLIB
+// CHECK_BYTECODE_LISTING
+
+class C {
+    val s: String by this
+}
+
+val c = C()
+
+operator fun C.getValue(thisRef: Any?, property: Any?) =
+    if (this == c && thisRef == c) "OK" else "Failed"
+
+fun box() = c.s

compiler/testData/codegen/box/delegatedProperty/delegateToThis/delegateToThisByExtension.txt

@@ -0,0 +1,19 @@
+@kotlin.Metadata
+public final class C {
+    // source: 'delegateToThisByExtension.kt'
+    synthetic final static field $$delegatedProperties: kotlin.reflect.KProperty[]
+    private final @org.jetbrains.annotations.NotNull field s$delegate: C
+    static method <clinit>(): void
+    public method <init>(): void
+    public final @org.jetbrains.annotations.NotNull method getS(): java.lang.String
+}
+
+@kotlin.Metadata
+public final class DelegateToThisByExtensionKt {
+    // source: 'delegateToThisByExtension.kt'
+    private final static @org.jetbrains.annotations.NotNull field c: C
+    static method <clinit>(): void
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+    public final static @org.jetbrains.annotations.NotNull method getC(): C
+    public final static @org.jetbrains.annotations.NotNull method getValue(@org.jetbrains.annotations.NotNull p0: C, @org.jetbrains.annotations.Nullable p1: java.lang.Object, @org.jetbrains.annotations.Nullable p2: java.lang.Object): java.lang.String
+}

compiler/testData/codegen/box/delegatedProperty/delegateToThis/delegateToThisByExtension_ir.txt

@@ -0,0 +1,19 @@
+@kotlin.Metadata
+public final class C {
+    // source: 'delegateToThisByExtension.kt'
+    synthetic final static field $$delegatedProperties: kotlin.reflect.KProperty[]
+    static method <clinit>(): void
+    public method <init>(): void
+    private static method getS$delegate(p0: C): java.lang.Object
+    public final @org.jetbrains.annotations.NotNull method getS(): java.lang.String
+}
+
+@kotlin.Metadata
+public final class DelegateToThisByExtensionKt {
+    // source: 'delegateToThisByExtension.kt'
+    private final static @org.jetbrains.annotations.NotNull field c: C
+    static method <clinit>(): void
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+    public final static @org.jetbrains.annotations.NotNull method getC(): C
+    public final static @org.jetbrains.annotations.NotNull method getValue(@org.jetbrains.annotations.NotNull p0: C, @org.jetbrains.annotations.Nullable p1: java.lang.Object, @org.jetbrains.annotations.Nullable p2: java.lang.Object): java.lang.String
+}

compiler/testData/codegen/box/delegatedProperty/delegateToThis/delegateToThis_ir.txt

@@ -0,0 +1,16 @@
+@kotlin.Metadata
+public final class C {
+    // source: 'delegateToThis.kt'
+    synthetic final static field $$delegatedProperties: kotlin.reflect.KProperty[]
+    static method <clinit>(): void
+    public method <init>(): void
+    private static method getS$delegate(p0: C): java.lang.Object
+    public final @org.jetbrains.annotations.NotNull method getS(): java.lang.String
+    public final @org.jetbrains.annotations.NotNull method getValue(@org.jetbrains.annotations.Nullable p0: java.lang.Object, @org.jetbrains.annotations.Nullable p1: java.lang.Object): java.lang.String
+}
+
+@kotlin.Metadata
+public final class DelegateToThisKt {
+    // source: 'delegateToThis.kt'
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+}