KT-5044 code cleanup, test added

compiler/backend/src/org/jetbrains/kotlin/codegen/ExpressionCodegen.java

@@ -3470,13 +3470,13 @@ public class ExpressionCodegen extends KtVisitor<StackValue, StackValue> impleme
      * Translates x in a..b to a <= x && x <= b
      * and x !in a..b to a > x || x > b for any primitive type
      */
-    private void generateInPrimitiveRange(StackValue leftValue, KtBinaryExpression rangeExpression, boolean isInverted) {
-        Type rangeType = leftValue.type;
+    private void generateInPrimitiveRange(StackValue argument, KtBinaryExpression rangeExpression, boolean isInverted) {
+        Type rangeType = argument.type;
         int localVarIndex = myFrameMap.enterTemp(rangeType);
         // Load left bound
         gen(rangeExpression.getLeft(), rangeType);
         // Load x into local variable to avoid StackValue#put side-effects
-        leftValue.put(rangeType, v);
+        argument.put(rangeType, v);
         v.store(localVarIndex, rangeType);
         v.load(localVarIndex, rangeType);
 

compiler/backend/src/org/jetbrains/kotlin/codegen/RangeCodegenUtil.java

@@ -217,15 +217,6 @@ public class RangeCodegenUtil {
         return false;
     }
 
-    private static boolean isBuiltInRangeTo(@NotNull CallableDescriptor descriptor) {
-        if (!isTopLevelInPackage(descriptor, "rangeTo", "kotlin.ranges")) {
-            return false;
-        }
-
-        ReceiverParameterDescriptor extensionReceiver = descriptor.getExtensionReceiverParameter();
-        return extensionReceiver != null;
-    }
-
     /*
      * Checks whether for expression 'x in a..b' a..b is primitive integral range
      * with same type as x.
@@ -256,6 +247,15 @@ public class RangeCodegenUtil {
         return false;
     }
 
+    private static boolean isBuiltInRangeTo(@NotNull CallableDescriptor descriptor) {
+        if (!isTopLevelInPackage(descriptor, "rangeTo", "kotlin.ranges")) {
+            return false;
+        }
+
+        ReceiverParameterDescriptor extensionReceiver = descriptor.getExtensionReceiverParameter();
+        return extensionReceiver != null;
+    }
+
     private static boolean isTopLevelInPackage(@NotNull CallableDescriptor descriptor, @NotNull String name, @NotNull String packageName) {
         if (!name.equals(descriptor.getName().asString())) return false;