[FIR] Implement INVISIBLE_SETTER

compiler/testData/diagnostics/tests/controlFlowAnalysis/kt2330.fir.kt

@@ -23,23 +23,23 @@ class P {
 
 fun foo() {
     val p = P()
-    p.x = 34 //should be an error here
+    <!INVISIBLE_SETTER!>p.x<!> = 34 //should be an error here
     p.y = 23
 
     fun inner() {
-        p.x = 44
+        <!INVISIBLE_SETTER!>p.x<!> = 44
     }
 }
 
 class R {
     val p = P();
     init {
-        p.x = 42
+        <!INVISIBLE_SETTER!>p.x<!> = 42
     }
 
     val testInGetterInOtherClass : Int
         get() {
-            p.x = 33
+            <!INVISIBLE_SETTER!>p.x<!> = 33
             return 3
         }
 }
@@ -50,4 +50,4 @@ fun test() {
             <!UNRESOLVED_REFERENCE!>p<!>.x = 43
         }
     }
-}
+}

compiler/testData/diagnostics/tests/controlFlowAnalysis/kt2960.fir.kt

@@ -1,36 +0,0 @@
-//KT-2960 Perform control flow checks for package property initializers
-
-package b
-
-class P {
-    var x : Int = 0
-        private set
-}
-
-val p = P()
-var f = { -> p.x = 32 }
-
-val o = object {
-    fun run() {
-        p.x = 4
-
-        val z : Int
-        doSmth(<!UNINITIALIZED_VARIABLE!>z<!>)
-    }
-}
-
-val g = { ->
-    val x: Int
-    doSmth(<!UNINITIALIZED_VARIABLE!>x<!>)
-}
-
-class A {
-    val a : Int = 1
-      get() {
-          val x : Int
-          doSmth(<!UNINITIALIZED_VARIABLE!>x<!>)
-          return field
-      }
-}
-
-fun doSmth(i: Int) = i

compiler/testData/diagnostics/tests/controlFlowAnalysis/kt2960.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 //KT-2960 Perform control flow checks for package property initializers
 
 package b

compiler/testData/diagnostics/tests/controlFlowAnalysis/privateSetter.fir.kt

@@ -1,17 +0,0 @@
-open class X(s : String) {
-    public var n: String = s
-        private set
-
-}
-
-class Z : X("subclass") {
-    fun print(): String {
-        n = n
-        return n;
-    }
-}
-
-
-fun box() : String {
-    return Z().print() //error
-}

compiler/testData/diagnostics/tests/controlFlowAnalysis/privateSetter.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 open class X(s : String) {
     public var n: String = s
         private set