RFR: 8300543 Compiler Implementation for Pattern Matching for switch [v6]

[Maurizio Cimadamore]

On Mon, 24 Apr 2023 15:16:18 GMT, Jan Lahoda <jlahoda at openjdk.org> wrote:

>> This is the first draft of a patch for JEP 440 and JEP 441. Changes included:
>> 
>>  - the pattern matching for switch and record patterns features are made final, together with updates to tests.
>>  - parenthesized patterns are removed.
>>  - qualified enum constants are supported for case labels.
>> 
>> This change herein also includes removal record patterns in for each loop, which may be split into a separate PR in the future.
>
> Jan Lahoda has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Reflecting review changes.

src/java.base/share/classes/java/lang/runtime/SwitchBootstraps.java line 219:

> 217:      * the method of the call site return the length of the {@code labels} array.
> 218:      * <p>
> 219:      * The value of the {@code restart} index must be between {@code 0} and

This description is a bit ambiguous - not clear whether it's `0 < x < length`, or `0 <= x < length`.

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

PR Review Comment: https://git.openjdk.org/jdk/pull/13074#discussion_r1176269340