RFR: 8331187: Optimize MethodTypeDesc and ClassDesc.ofDescriptor for primitive types [v3]

[Claes Redestad]

On Fri, 26 Apr 2024 12:43:32 GMT, Chen Liang <liach at openjdk.org> wrote:

> Primitive class desc sharing should be really helpful, especially considering that they are represented as condy and their `equals` is thus quite inefficient.

Ok. We could consider overriding `equals` in `PrimitiveClassDescImpl` if this is an issue (in a follow-up). With guarantees that they are unique we could even have such a method be implemented as a reference equality check.

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PR Comment: https://git.openjdk.org/jdk/pull/18971#issuecomment-2079415480