RFR: 8255265: IdealLoopTree::iteration_split_impl does not use should_align

[Vladimir Kozlov]

On Thu, 22 Oct 2020 18:00:28 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> There is a TODO item in IdealLoopTree::iteration_split_impl:
> 
>   // TODO: Remove align -- not used.
>   bool should_align = policy_align(phase);
> 
> Indeed, it is not used, because policy_align always returns FALSE. Can clean up some of the code around too.

Good. Yes, it is never was used.
We do try to aligned one of array access during vectorization:
https://github.com/openjdk/jdk/blob/master/src/hotspot/share/opto/superword.cpp#L3417

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Marked as reviewed by kvn (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/815