RFR: 8340093: C2 SuperWord: implement cost model [v4]

Thu Nov 6 08:23:06 UTC 2025

On Thu, 6 Nov 2025 08:13:40 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>>> What exactly does Matcher::vector_op_pre_select_sz_estimate return? The number of instructions or some kind of throughput estimate?
>> 
>> I believe it tries to estimate the number of instructions generated by a node.
>
> I'm filing an RFE now

[JDK-8371393](https://bugs.openjdk.org/browse/JDK-8371393)
C2 SuperWord: improve cost model

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

PR Review Comment: https://git.openjdk.org/jdk/pull/27803#discussion_r2497958293