Improve perf of type checker for equal types

ballerina-platform · Dec 11, 2024 · 7e5f313 · 7e5f313
1 parent f0875b7
commit 7e5f313
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/TypeChecker.java b/bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/TypeChecker.java
@@ -257,12 +257,15 @@ public static boolean anyToJBoolean(Object sourceVal) {
      * @return true if the value belongs to the given type, false otherwise
      */
     public static boolean checkIsType(Object sourceVal, Type targetType) {
-        Context cx = context();
         Type sourceType = getType(sourceVal);
+        if (sourceType == targetType || (sourceType.getTag() == targetType.getTag() && sourceType.equals(targetType))) {
+            return true;
+        }
         if (isSubType(sourceType, targetType)) {
             return true;
         }
         SemType sourceSemType = SemType.tryInto(sourceType);
+        Context cx = context();
         return couldInherentTypeBeDifferent(sourceSemType) &&
                 isSubTypeWithInherentType(cx, sourceVal, SemType.tryInto(targetType));
     }