tree 9d51874aa457d0ab9e0c7e76987f47c4e724074a
parent baaddf83215587317257dae9d42708e3244d8154
author Ta-Wei Tu <tu.da.wei@gmail.com> 1613580903 +0800
committer Copybara-Service <copybara-worker@google.com> 1613733055 -0800

[NFC] Refactor LoopInterchange into a loop-nest pass

This is the preliminary patch of converting `LoopInterchange` pass to a loop-nest pass and has no intended functional change.
Changes that are not loop-nest related are split to D96650.

Reviewed By: Whitney

Differential Revision: https://reviews.llvm.org/D96644

GitOrigin-RevId: 0eeaec2a6d5f5758c2bbb0f47c06f769f7ae2813