[llvm] [VPlan] Try to hoist Previous (and operands), if sinking fails for FORs. (PR #108945)

[Florian Hahn via llvm-commits]

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@@ -795,7 +881,8 @@ bool VPlanTransforms::adjustFixedOrderRecurrences(VPlan &Plan,
     }
 
     if (!sinkRecurrenceUsersAfterPrevious(FOR, Previous, VPDT))
-      return false;
+      if (!hoistPreviousBeforeFORUsers(FOR, Previous, VPDT))
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fhahn wrote:

Updated, thanks!

https://github.com/llvm/llvm-project/pull/108945