--- a/src/java.base/share/classes/java/lang/invoke/InvokerBytecodeGenerator.java Thu Mar 01 15:31:04 2018 -0800
+++ b/src/java.base/share/classes/java/lang/invoke/InvokerBytecodeGenerator.java Thu Mar 01 13:08:06 2018 +0100
@@ -93,6 +93,10 @@
private ClassWriter cw;
private MethodVisitor mv;
+ /** Single element internal class name lookup cache. */
+ private Class<?> lastClass;
+ private String lastInternalName;
+
private static final MemberName.Factory MEMBERNAME_FACTORY = MemberName.getFactory();
private static final Class<?> HOST_CLASS = LambdaForm.class;
@@ -602,13 +606,18 @@
mv.visitInsn(opcode);
}
- private static String getInternalName(Class<?> c) {
+ private String getInternalName(Class<?> c) {
if (c == Object.class) return OBJ;
else if (c == Object[].class) return OBJARY;
else if (c == Class.class) return CLS;
else if (c == MethodHandle.class) return MH;
assert(VerifyAccess.isTypeVisible(c, Object.class)) : c.getName();
- return c.getName().replace('.', '/');
+
+ if (c == lastClass) {
+ return lastInternalName;
+ }
+ lastClass = c;
+ return lastInternalName = c.getName().replace('.', '/');
}
private static MemberName resolveFrom(String name, MethodType type, Class<?> holder) {