JVM_IR: optimize delegation by property references

E.g. a statement like

    var x by ::y

is semantically equivalent to

    var x
      get() = y
      set(value) { y = value }

and thus does not need a full property reference object, or even a field
if the receiver is not bound.

 #KT-39054 Fixed
 #KT-47102 Fixed

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBlackBoxCodegenTestGenerated.java

@@ -13198,6 +13198,18 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/delegatedProperty/delegateToAnother.kt");
         }
 
+        @Test
+        @TestMetadata("delegateToAnotherMutable.kt")
+        public void testDelegateToAnotherMutable() throws Exception {
+            runTest("compiler/testData/codegen/box/delegatedProperty/delegateToAnotherMutable.kt");
+        }
+
+        @Test
+        @TestMetadata("delegateToGenericJavaProperty.kt")
+        public void testDelegateToGenericJavaProperty() throws Exception {
+            runTest("compiler/testData/codegen/box/delegatedProperty/delegateToGenericJavaProperty.kt");
+        }
+
         @Test
         @TestMetadata("delegateWithPrivateSet.kt")
         public void testDelegateWithPrivateSet() throws Exception {

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBytecodeTextTestGenerated.java

@@ -4708,6 +4708,12 @@ public class FirBytecodeTextTestGenerated extends AbstractFirBytecodeTextTest {
             runTest("compiler/testData/codegen/bytecodeText/optimizedDelegatedProperties/definedInSources.kt");
         }
 
+        @Test
+        @TestMetadata("delegateToAnother.kt")
+        public void testDelegateToAnother() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/optimizedDelegatedProperties/delegateToAnother.kt");
+        }
+
         @Test
         @TestMetadata("inSeparateModule.kt")
         public void testInSeparateModule() throws Exception {