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

compiler/testData/codegen/box/delegatedProperty/delegateToSingleton/withSideEffectsFromFileClass.kt

@@ -0,0 +1,19 @@
+// WITH_STDLIB
+// CHECK_BYTECODE_LISTING
+
+var initialized = false
+
+object O {
+    init {
+        initialized = true
+    }
+
+    operator fun getValue(x: Any?, y: Any?): String {
+        throw RuntimeException()
+    }
+}
+
+val s: String by O
+
+fun box(): String = if (initialized) "OK" else "FAILURE"
+