RFR: 8341755: Optimize argNames in InnerClassLambdaMetafactory [v5]

[Claes Redestad]

On Tue, 8 Oct 2024 22:34:38 GMT, Shaojin Wen <swen at openjdk.org> wrote:

>> A simple optimization that eliminates the allocation of the MethodTypeDescImpl object when parameterCount is equal to 0 and eliminates the allocation of argNames when parameterCount is equal to 1
>
> Shaojin Wen has updated the pull request incrementally with one additional commit since the last revision:
> 
>   fix merge error

src/java.base/share/classes/java/lang/invoke/InnerClassLambdaMetafactory.java line 191:

> 189: 
> 190:     private static String argName(int i) {
> 191:         String argName = i < ARG_NAME_CACHE_SIZE ? ARG_NAME_CACHE[i] : null;

Just an idea, but perhaps could constant init `ARG_NAME_CACHE = { "arg$0", "arg$1", .. , "arg$7" };` and simplify this?

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PR Review Comment: https://git.openjdk.org/jdk/pull/21399#discussion_r1792744321