[llvm] [SandboxVec][BottomUpVec] Add cost estimation and tr-accept-or-revert pass (PR #124620)

[via llvm-commits]

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@@ -387,79 +374,29 @@ Value *BottomUpVec::vectorizeRec(ArrayRef<Value *> Bndl,
 }
 
 bool BottomUpVec::tryVectorize(ArrayRef<Value *> Bndl) {
+  Change = false;
   DeadInstrCandidates.clear();
   Legality->clear();
   vectorizeRec(Bndl, {}, /*Depth=*/0);
   tryEraseDeadInstrs();
   return Change;
 }
 
-bool BottomUpVec::runOnFunction(Function &F, const Analyses &A) {
+bool BottomUpVec::runOnRegion(Region &Rgn, const Analyses &A) {
+  const auto &SeedSlice = Rgn.getAux();
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vporpo wrote:

Makes sense, I can add a clearAux() method.

https://github.com/llvm/llvm-project/pull/124620