test/hotspot/gtest/oops/test_arrayOop.cpp

@@ -85,5 +85,60 @@
  
  TEST_VM(arrayOopDesc, narrowOop) {
    ASSERT_PRED1(check_max_length_overflow, T_NARROWOOP);
  }
  // T_VOID and T_ADDRESS are not supported by max_array_length()
+ 
+ TEST_VM(arrayOopDesc, base_offset) {
+ #ifdef _LP64
+   if (UseCompactObjectHeaders) {
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_BOOLEAN), 12);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_BYTE),    12);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_SHORT),   12);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_CHAR),    12);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_INT),     12);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_FLOAT),   12);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_LONG),    16);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_DOUBLE),  16);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_OBJECT),  12);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_ARRAY),   12);
+   } else if (UseCompressedClassPointers) {
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_BOOLEAN), 16);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_BYTE),    16);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_SHORT),   16);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_CHAR),    16);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_INT),     16);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_FLOAT),   16);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_LONG),    16);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_DOUBLE),  16);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_OBJECT),  16);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_ARRAY),   16);
+   } else {
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_BOOLEAN), 20);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_BYTE),    20);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_SHORT),   20);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_CHAR),    20);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_INT),     20);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_FLOAT),   20);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_LONG),    24);
+     EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_DOUBLE),  24);
+     if (UseCompressedOops) {
+       EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_OBJECT), 20);
+       EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_ARRAY),  20);
+     } else {
+       EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_OBJECT), 24);
+       EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_ARRAY),  24);
+     }
+   }
+ #else
+   EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_BOOLEAN), 12);
+   EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_BYTE),    12);
+   EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_SHORT),   12);
+   EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_CHAR),    12);
+   EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_INT),     12);
+   EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_FLOAT),   12);
+   EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_LONG),    16);
+   EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_DOUBLE),  16);
+   EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_OBJECT),  12);
+   EXPECT_EQ(arrayOopDesc::base_offset_in_bytes(T_ARRAY),   12);
+ #endif
+ }