FIR checker: warn useless as and is

compiler/testData/diagnostics/tests/suppress/oneWarning/onClass.fir.kt

@@ -1,4 +0,0 @@
-@Suppress("REDUNDANT_NULLABLE")
-class C {
-    fun foo(): String?? = null as Nothing??
-}

compiler/testData/diagnostics/tests/suppress/oneWarning/onClass.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 @Suppress("REDUNDANT_NULLABLE")
 class C {
     fun foo(): String?? = null <!USELESS_CAST!>as Nothing??<!>

compiler/testData/diagnostics/tests/suppress/oneWarning/onClassObject.fir.kt

@@ -1,6 +0,0 @@
-class C {
-    @Suppress("REDUNDANT_NULLABLE")
-    companion object {
-        val foo: String?? = null as Nothing??
-    }
-}

compiler/testData/diagnostics/tests/suppress/oneWarning/onClassObject.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 class C {
     @Suppress("REDUNDANT_NULLABLE")
     companion object {

compiler/testData/diagnostics/tests/suppress/oneWarning/onExpression.fir.kt

@@ -1,4 +0,0 @@
-fun foo(): Any? {
-    @Suppress("REDUNDANT_NULLABLE")
-    return null as Nothing??
-}

compiler/testData/diagnostics/tests/suppress/oneWarning/onExpression.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 fun foo(): Any? {
     @Suppress("REDUNDANT_NULLABLE")
     return null <!USELESS_CAST!>as Nothing??<!>

compiler/testData/diagnostics/tests/suppress/oneWarning/onFunction.fir.kt

@@ -1,4 +0,0 @@
-class C {
-    @Suppress("REDUNDANT_NULLABLE")
-    fun foo(): String?? = null as Nothing??
-}

compiler/testData/diagnostics/tests/suppress/oneWarning/onFunction.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 class C {
     @Suppress("REDUNDANT_NULLABLE")
     fun foo(): String?? = null <!USELESS_CAST!>as Nothing??<!>

compiler/testData/diagnostics/tests/suppress/oneWarning/onLocalVariable.fir.kt

@@ -1,7 +0,0 @@
-class C {
-    fun foo(): Any? {
-        @Suppress("REDUNDANT_NULLABLE")
-        val v: String?? = null as Nothing??
-        return v
-    }
-}

compiler/testData/diagnostics/tests/suppress/oneWarning/onLocalVariable.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 class C {
     fun foo(): Any? {
         @Suppress("REDUNDANT_NULLABLE")

compiler/testData/diagnostics/tests/suppress/oneWarning/onObject.fir.kt

@@ -1,4 +0,0 @@
-@Suppress("REDUNDANT_NULLABLE")
-object C {
-    fun foo(): String?? = null as Nothing??
-}

compiler/testData/diagnostics/tests/suppress/oneWarning/onObject.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 @Suppress("REDUNDANT_NULLABLE")
 object C {
     fun foo(): String?? = null <!USELESS_CAST!>as Nothing??<!>

compiler/testData/diagnostics/tests/suppress/oneWarning/onParameter.fir.kt

@@ -1,3 +0,0 @@
-class C {
-    fun foo(@Suppress("REDUNDANT_NULLABLE") p: String?? = null as Nothing??) = p
-}

compiler/testData/diagnostics/tests/suppress/oneWarning/onParameter.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 class C {
     fun foo(@Suppress("REDUNDANT_NULLABLE") p: String?? = null <!USELESS_CAST!>as Nothing??<!>) = p
 }

compiler/testData/diagnostics/tests/suppress/oneWarning/onProperty.fir.kt

@@ -1,4 +0,0 @@
-class C {
-    @Suppress("REDUNDANT_NULLABLE")
-    val foo: String?? = null as Nothing?
-}

compiler/testData/diagnostics/tests/suppress/oneWarning/onProperty.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 class C {
     @Suppress("REDUNDANT_NULLABLE")
     val foo: String?? = null <!USELESS_CAST!>as Nothing?<!>

compiler/testData/diagnostics/tests/suppress/oneWarning/onPropertyAccessor.fir.kt

@@ -1,5 +0,0 @@
-class C {
-    val foo: String?
-        @Suppress("REDUNDANT_NULLABLE")
-        get(): String?? = null as Nothing??
-}

compiler/testData/diagnostics/tests/suppress/oneWarning/onPropertyAccessor.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 class C {
     val foo: String?
         @Suppress("REDUNDANT_NULLABLE")