FIR: Mark a pack of tests (53) as FIR_IDENTICAL

compiler/testData/diagnostics/tests/smartCasts/elvis/impossible.fir.kt

@@ -1,40 +0,0 @@
-// !LANGUAGE: +BooleanElvisBoundSmartCasts
-// See KT-20752
-
-class Unstable {
-    val first: String? get() = null
-}
-
-class StringList {
-    fun remove(s: String) = s
-}
-
-fun StringList.remove(s: String?) = s ?: ""
-
-fun String.isEmpty() = this == ""
-
-fun foo(list: StringList, arg: Unstable) {
-    list.remove(arg.first)
-    if (arg.first?.isEmpty() ?: false) {
-        // Should be still resolved to extension, without smart cast or smart cast impossible
-        list.remove(arg.first)
-    }
-}
-
-class UnstableBoolean {
-    val first: Boolean? get() = null
-}
-
-class BooleanList {
-    fun remove(b: Boolean) = b
-}
-
-fun BooleanList.remove(b: Boolean?) = b ?: false
-
-fun bar(list: BooleanList, arg: UnstableBoolean) {
-    list.remove(arg.first)
-    if (arg.first ?: false) {
-        // Should be still resolved to extension, without smart cast or smart cast impossible
-        list.remove(arg.first)
-    }
-}

compiler/testData/diagnostics/tests/smartCasts/elvis/impossible.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !LANGUAGE: +BooleanElvisBoundSmartCasts
 // See KT-20752
 

compiler/testData/diagnostics/tests/smartCasts/varnotnull/initialization.fir.kt

@@ -1,7 +0,0 @@
-fun foo() {
-    var v: String? = "xyz"
-    // It is possible in principle to provide smart cast here
-    v<!UNSAFE_CALL!>.<!>length
-    v = null
-    v<!UNSAFE_CALL!>.<!>length
-}

compiler/testData/diagnostics/tests/smartCasts/varnotnull/initialization.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 fun foo() {
     var v: String? = "xyz"
     // It is possible in principle to provide smart cast here