Introduce FIR_IDENTICAL for FIR vs old frontend tests #KT-36879 Fixed

compiler/testData/diagnostics/tests/controlStructures/ForWithoutBraces.fir.kt

@@ -1,8 +0,0 @@
-// http://youtrack.jetbrains.net/issue/KT-552
-// KT-552 For variable unresolved if loop body is not block
-
-fun ff() {
-    var i = 1
-    for (j in 1..10)
-        i += j
-}

compiler/testData/diagnostics/tests/controlStructures/ForWithoutBraces.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // http://youtrack.jetbrains.net/issue/KT-552
 // KT-552 For variable unresolved if loop body is not block
 

compiler/testData/diagnostics/tests/controlStructures/commonSupertypeOfT.fir.kt

@@ -1,30 +0,0 @@
-// KT-6774 Cannot find equals() when comparing with null
-
-fun <T: Any> fn(t1: T, t2: T?) {
-    val x = if (true) t1 else t2
-    x == null
-    x?.equals(null)
-    x?.hashCode()
-    x.toString()
-    x!!.hashCode()
-
-    val y = t2 ?: t1
-    y == t1
-    y.equals(null)
-    y.hashCode()
-    y.toString()
-    y.hashCode()
-}
-
-interface Tr {
-    fun foo()
-}
-
-fun <T: Tr> fn(t1: T, t2: T?) {
-    val x = if (true) t1 else t2
-    x?.foo()
-    x!!.foo()
-
-    val y = t2 ?: t1
-    y.foo()
-}

compiler/testData/diagnostics/tests/controlStructures/commonSupertypeOfT.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // KT-6774 Cannot find equals() when comparing with null
 
 fun <T: Any> fn(t1: T, t2: T?) {

compiler/testData/diagnostics/tests/controlStructures/specialConstructsWithNullableExpectedType.fir.kt

@@ -1,20 +0,0 @@
-val ns: String? = null
-
-val testElvis1: String? = ns ?: ""
-val testElvis2: String = run { ns ?: "" }
-val testElvis3: String? = run { ns ?: "" }
-
-val testIf1: String? = if (true) "" else ""
-val testIf2: String? = run { if (true) "" else "" }
-val testIf3: String? = if (true) run { "" } else ""
-val testIf4: String? = run { run { if (true) "" else "" } }
-val testIf5: String? = run { if (true) run { "" } else "" }
-
-val testWhen1: String? = when { else -> "" }
-val testWhen2: String? = run { when { else -> "" } }
-val testWhen3: String? = when { else -> run { "" } }
-val testWhen4: String? = run { run { when { else -> "" } } }
-val testWhen5: String? = run { when { else -> run { "" } } }
-
-val testExcl1: String? = run { ns!! }
-val testExcl2: String? = run { run { ns!! } }

compiler/testData/diagnostics/tests/controlStructures/specialConstructsWithNullableExpectedType.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 val ns: String? = null
 
 val testElvis1: String? = ns ?: ""