RFR: 8304915: Create jdk.internal.util.Architecture enum and apply [v4]

[ExE Boss]

On Thu, 6 Apr 2023 07:40:50 GMT, Per Minborg <pminborg at openjdk.org> wrote:

>> Roger Riggs has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Correct spelling of isAARCH64 in WIndows AttachProviderImpl
>
> src/java.base/share/classes/jdk/internal/util/Architecture.java line 85:
> 
>> 83:      */
>> 84:     @ForceInline
>> 85:     public static boolean isRISCV64() {
> 
> Are all the "isers" necessary to provide constant code folding or is the samt thing achievable via expressions like `(Architecture.current() == Architecture.X)` ?

`Architecture.current()` requires the `Architecture.archValues` array to be annotated with `@jdk.internal.vm.annotation.Stable` for it to be constant foldable by the JIT.

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PR Review Comment: https://git.openjdk.org/jdk/pull/13357#discussion_r1159428913