ARM64 - Minor regression from optimizing 'a % b'

[TIHan]

As a result of this PR: #66407 there is a minor regression where 'a / b' is not CSE'ed with cases of 'a % b' as the optimization removes the 'SubMulDiv' optimization when the constant is the power of 2.

This isn't a trivial problem and not an urgent one. The PR's optimization for 'a % b' is better to have than CSEs between 'a % b' and 'a / b'.

Marking this as future for now.

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Issue Details

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As a result of this PR: #66407 there is a minor regression where 'a / b' is not CSE'ed with cases of 'a % b' as the optimization removes the 'SubMulDiv' optimization when the constant is the power of 2.

This isn't a trivial problem and not an urgent one. The PR's optimization for 'a % b' is better to have than CSEs between 'a % b' and 'a / b'.

Marking this as future for now.

Author:	TIHan
Assignees:	-
Labels:	tenet-performance, area-CodeGen-coreclr, untriaged
Milestone:	Future