test/hotspot/jtreg/vmTestbase/nsk/jvmti/IterateThroughHeap/filter-tagged/HeapFilter.cpp

*** 59,72 ****
  static int reported_objects = 0;
  
  //expected values
  #define INT_ARRAY_LENGTH 2
  
! static jint TAGGED_STATIC_INT_VALUE = 0xC0DE01;
! static jint TAGGED_INT_VALUE = 0xC0DE02;
! static jint UNTAGGED_STATIC_INT_VALUE = 0xC0DE03;
! static jint UNTAGGED_INT_VALUE = 0xC0DE04;
  static jint TAGGED_INT_ARRAY_VALUE[] = {0xC0DE01,
                                                   0xC0DE01+1};
  static jint UNTAGGED_INT_ARRAY_VALUE[] = {0xC0DE03,
                                                     0xC0DE03+1};
  static const wchar_t *TAGGED_STRING_VALUE = L"I'm a tagged string";
--- 59,73 ----
  static int reported_objects = 0;
  
  //expected values
  #define INT_ARRAY_LENGTH 2
  
! static jint POISON = 0x1234;
! static jint TAGGED_STATIC_INT_VALUE = 0xC0DE01 + POISON;
! static jint TAGGED_INT_VALUE = 0xC0DE02 + POISON;
! static jint UNTAGGED_STATIC_INT_VALUE = 0xC0DE03 + POISON;
! static jint UNTAGGED_INT_VALUE = 0xC0DE04 + POISON;
  static jint TAGGED_INT_ARRAY_VALUE[] = {0xC0DE01,
                                                   0xC0DE01+1};
  static jint UNTAGGED_INT_ARRAY_VALUE[] = {0xC0DE03,
                                                     0xC0DE03+1};
  static const wchar_t *TAGGED_STRING_VALUE = L"I'm a tagged string";
*** 350,359 ****
--- 351,368 ----
        }
        is_static = (modifiers & STATIC_FIELD) == STATIC_FIELD;
        if (is_primitive_type(objects_info[object].fields[field].signature)) {
          objects_info[object].fields[field].primitive = 1;
          is_primitive = 1;
+         // Add POISON to all int fields to make the value opaque to the JIT compiler.
+         if (is_static) {
+           jint value = jni->GetStaticIntField(targetClass, targetFields[field]);
+           jni->SetStaticIntField(targetClass, targetFields[field], value + POISON);
+         } else {
+           jint value = jni->GetIntField(target, targetFields[field]);
+           jni->SetIntField(target, targetFields[field], value + POISON);
+         }
        } else {
          jobject value;
          if (!NSK_JVMTI_VERIFY(jvmti->GetFieldModifiers(
                  targetClass, targetFields[field], &modifiers))) {
            return JNI_ERR;