Hi,
another startup optimization for java.lang.invoke, this one collecting a
set of small fixes I've been wanting to get done for a while, including:
- no need to generate the signature strings in
BoundMethodHandle.makeCbmhCtor
- trusted MethodType lookups could be promoted without constructing new
objects
- InvokerBytecodeGenerator: creation of className and sourceFile can be
done lazily, which reduces String allocations in those cases where
there's a pre-generated form to be found
- MethodType lookup done twice when looking up pregenerated members (oops!)
- A lot of vararg array creation during startup in various places. A
larger rewrite could be warranted, but we can some startup gain by
simply constant-izing oft-used constant arguments such as
MethodType.invokerType
Webrev: http://cr.openjdk.java.net/~redestad/8178387/jdk.01/
Bug: https://bugs.openjdk.java.net/browse/JDK-8178387
Test: java.lang.invoke jtreg tests, verified each change in this patch
(and JDK-8178384) reduces the amount of bytecode executed during lambda
bootstrap.
Thanks!
/Claes
