tree 0611a3ad118ba73e89099e447868c38e89d13901
parent fb61fb69e6ad293de620629163035b3c0997644b
author Devang Patel <dpatel@apple.com> 1218755268 +0000
committer Copybara-Service <copybara-worker@google.com> 1600934153 -0700

The pass manager is not able to schedule -loop-deletion -loop-index-split.

The loop-deletion pass does not preserve dom frontier, which is required by
loop-index-split. When the PM checks dom frontier for loop-index-split, it has
already verified that lcssa is availalble. However, new dom frontier forces new
loop pass manager, which does not  have lcssa yet.

The PM should recheck availability of required analysis passes in such cases.

llvm-svn: 54805
GitOrigin-RevId: fdee7034b3c5eaff85c9943a744a7ac948e2abf5