RFR: 8286669: Replace MethodHandle specialization with ASM in mainline [v3]

[Maurizio Cimadamore]

On Tue, 17 May 2022 05:54:39 GMT, Rémi Forax <forax at openjdk.org> wrote:

>> Jorn Vernee has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   BootstrapMethodError -> ExceptionInInitializerError
>
> src/java.base/share/classes/jdk/internal/foreign/abi/BindingSpecializer.java line 98:
> 
>> 96:     private static final String CLASS_DATA_DESC = methodType(Object.class, MethodHandles.Lookup.class, String.class, Class.class).descriptorString();
>> 97:     private static final String RELEASE0_DESC = methodType(void.class).descriptorString();
>> 98:     private static final String ACQUIRE0_DESC = methodType(void.class).descriptorString();
> 
> calling methodType() is quite slow because of the cache of MethodType so maybe those initialization should be done explicitly in a static block to avoid to recompute methodType(long).descriptorString() several times

What about using MethodTypeDesc/ClassDesc as building block?

-------------

PR: https://git.openjdk.java.net/jdk/pull/8685