[IR] Extend test coverage for smart cast handling.

compiler/testData/ir/irText/expressions/floatingPointComparisons/nullableAnyAsIntToDouble.fir.txt

@@ -1,18 +0,0 @@
-FILE fqName:<root> fileName:/nullableAnyAsIntToDouble.kt
-  FUN name:test visibility:public modality:FINAL <> (x:kotlin.Any?, y:kotlin.Double) returnType:kotlin.Boolean
-    VALUE_PARAMETER name:x index:0 type:kotlin.Any?
-    VALUE_PARAMETER name:y index:1 type:kotlin.Double
-    BLOCK_BODY
-      RETURN type=kotlin.Nothing from='public final fun test (x: kotlin.Any?, y: kotlin.Double): kotlin.Boolean declared in <root>'
-        WHEN type=kotlin.Boolean origin=ANDAND
-          BRANCH
-            if: TYPE_OP type=kotlin.Boolean origin=INSTANCEOF typeOperand=kotlin.Int
-              GET_VAR 'x: kotlin.Any? declared in <root>.test' type=kotlin.Any? origin=null
-            then: CALL 'public final fun less (arg0: kotlin.Double, arg1: kotlin.Double): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=LT
-              arg0: CALL 'public open fun toDouble (): kotlin.Double declared in kotlin.Int' type=kotlin.Double origin=null
-                $this: TYPE_OP type=kotlin.Int origin=IMPLICIT_CAST typeOperand=kotlin.Int
-                  GET_VAR 'x: kotlin.Any? declared in <root>.test' type=kotlin.Any? origin=null
-              arg1: GET_VAR 'y: kotlin.Double declared in <root>.test' type=kotlin.Double origin=null
-          BRANCH
-            if: CONST Boolean type=kotlin.Boolean value=true
-            then: CONST Boolean type=kotlin.Boolean value=false

compiler/testData/ir/irText/expressions/floatingPointComparisons/nullableAnyAsIntToDouble.kt

@@ -1,2 +1,3 @@
+// FIR_IDENTICAL
 fun test(x: Any?, y: Double) =
     x is Int && x < y