[llvm] [LoopVectorize] Enable vectorisation of early exit loops with live-outs (PR #120567)

[David Sherwood via llvm-commits]

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@@ -3662,6 +3665,13 @@ class VPRegionBlock : public VPBlockBase {
   /// VPRegionBlock.
   VPBlockBase *Exiting;
 
+  /// Hold the Early Exit block of the SEME region, if one exists.
+  VPBasicBlock *EarlyExit;
+
+  /// If one exists, this keeps track of the vector early mask that triggered
+  /// the early exit.
+  VPValue *VectorEarlyExitCond;
+
   /// An indicator whether this region is to generate multiple replicated
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david-arm wrote:

I'm happy to look into this, although I'm not sure what you mean by forcing a wide IV? I'll take a look at https://github.com/llvm/llvm-project/pull/112145 as well - do you think this is close to being merged?

https://github.com/llvm/llvm-project/pull/120567