Reland "[BasicBlockUtils] Fix dominator tree update for entry block in splitBlockBefore() (#178895)#179392

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Enna1 merged 3 commits intomainfrom

users/Enna1/Reland-splitBlockBefore-DomTreeUpdater

Feb 3, 2026

Commits on Feb 3, 2026

Reland "[BasicBlockUtils] Fix dominator tree update for entry block in splitBlockBefore() (#178895)"
Enna1
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clang-format
Enna1
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use DT.get() for eliminateFallThrough() as we are going to use it not update it in eliminateFallThrough()
Enna1
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