src/jdk.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/CompilerToVM.java

rev 12604 : 8173912: [JVMCI] fix memory overhead of JVMCI

@@ -276,21 +276,23 @@
      * {@code cpi} in {@code constantPool}. For some opcodes, checks are performed that require the
      * {@code method} that contains {@code opcode} to be specified. The values returned in
      * {@code info} are:
      *
      * <pre>
-     *     [(int) flags,   // only valid if field is resolved
-     *      (int) offset]  // only valid if field is resolved
+     *     [ flags,  // fieldDescriptor::access_flags()
+     *       offset, // fieldDescriptor::offset()
+     *       index   // fieldDescriptor::index()
+     *     ]
      * </pre>
      *
      * The behavior of this method is undefined if {@code cpi} does not denote a
      * {@code JVM_CONSTANT_Field} entry.
      *
      * @param info an array in which the details of the field are returned
      * @return the type defining the field if resolution is successful, 0 otherwise
      */
-    native HotSpotResolvedObjectTypeImpl resolveFieldInPool(HotSpotConstantPool constantPool, int cpi, HotSpotResolvedJavaMethodImpl method, byte opcode, long[] info);
+    native HotSpotResolvedObjectTypeImpl resolveFieldInPool(HotSpotConstantPool constantPool, int cpi, HotSpotResolvedJavaMethodImpl method, byte opcode, int[] info);
 
     /**
      * Converts {@code cpci} from an index into the cache for {@code constantPool} to an index
      * directly into {@code constantPool}.
      *

@@ -629,6 +631,17 @@
     /**
      * Invokes non-public method {@code java.lang.invoke.LambdaForm.compileToBytecode()} on
      * {@code lambdaForm} (which must be a {@code java.lang.invoke.LambdaForm} instance).
      */
     native void compileToBytecode(Object lambdaForm);
+
+    /**
+     * Gets the value of the VM flag named {@code name}.
+     *
+     * @param name name of a VM option
+     * @return {@code this} if the named VM option doesn't exist, a {@link String} or {@code null}
+     *         if its type is {@code ccstr} or {@code ccstrlist}, a {@link Double} if its type is
+     *         {@code double}, a {@link Boolean} if its type is {@code bool} otherwise a
+     *         {@link Long}
+     */
+    native Object getFlagValue(String name);
 }