[llvm] [LoopVectorize] Add support for vectorisation of more early exit loops (PR #88385)

[Florian Hahn via llvm-commits]

================
@@ -677,9 +678,14 @@ class VPBlockBase {
 class VPLiveOut : public VPUser {
   PHINode *Phi;
 
+  /// Is this a live-out value specifically for an early exit from the vector
+  /// loop? If so, it needs handling specially.
+  bool EarlyExit;
----------------
fhahn wrote:

Why is this needed? Would it be sufficient to record the predecessor as done in #94760? This would be more general in handling live-outs in different VPBBs


https://github.com/llvm/llvm-project/pull/88385