Control Flow: Fix CFG usage info for double-colon expressions

#KT-12551 Fixed
 #KT-17092 Fixed

compiler/frontend/src/org/jetbrains/kotlin/cfg/ControlFlowProcessor.kt

@@ -1450,9 +1450,8 @@ class ControlFlowProcessor(private val trace: BindingTrace) {
             val receiverExpression = expression.receiverExpression
             if (receiverExpression != null &&
                 trace.bindingContext.get(BindingContext.DOUBLE_COLON_LHS, receiverExpression) is DoubleColonLHS.Expression) {
-                // TODO: UNUSED_EXPRESSION is not reported on the whole expression, see KT-12551
                 generateInstructions(receiverExpression)
-                createSyntheticValue(expression, MagicKind.BOUND_CALLABLE_REFERENCE, receiverExpression)
+                createNonSyntheticValue(expression, MagicKind.BOUND_CALLABLE_REFERENCE, receiverExpression)
             }
             else {
                 createNonSyntheticValue(expression, MagicKind.UNBOUND_CALLABLE_REFERENCE)

compiler/frontend/src/org/jetbrains/kotlin/cfg/pseudocode/instructions/eval/operationInstructions.kt

@@ -134,7 +134,7 @@ enum class MagicKind(val sideEffectFree: Boolean = false) {
     IS(),
     CAST(),
     UNBOUND_CALLABLE_REFERENCE(true),
-    BOUND_CALLABLE_REFERENCE(),
+    BOUND_CALLABLE_REFERENCE(true),
     // implicit operations
     LOOP_RANGE_ITERATION(),
     IMPLICIT_RECEIVER(),

compiler/testData/diagnostics/tests/callableReference/bound/controlFlow.kt

@@ -1,7 +1,6 @@
 fun unusedExpression(s: String) {
-    // TODO: report UNUSED_EXPRESSION (KT-12551)
-    s::hashCode
-    s::class
+    <!UNUSED_EXPRESSION!>s::hashCode<!>
+    <!UNUSED_EXPRESSION!>s::class<!>
 }
 
 fun noUnusedParameter(s: String): Int {
@@ -10,13 +9,13 @@ fun noUnusedParameter(s: String): Int {
 }
 
 fun unreachableCode(): Int {
-    (if (true) return 1 else return 0)::toString
+    (if (true) return 1 else return 0)<!UNREACHABLE_CODE!>::toString<!>
     <!UNREACHABLE_CODE!>return 0<!>
 }
 
 fun unreachableCodeInLoop(): Int {
     while (true) {
-        (break)::toString
+        (break)<!UNREACHABLE_CODE!>::toString<!>
         <!UNREACHABLE_CODE!>return 1<!>
     }
     return 2

compiler/testData/diagnostics/tests/classLiteral/integerValueType.kt

@@ -7,5 +7,5 @@ fun f(<!UNUSED_PARAMETER!>x<!>: KClass<out Int>) {}
 fun test() {
     f(42::class)
     f((40 + 2)::class)
-    42::toInt
+    <!UNUSED_EXPRESSION!>42::toInt<!>
 }