[llvm] [VPlan] Introduce ExitPhi VPInstruction, use to create phi for FOR. (PR #94760)

[via llvm-commits]

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@@ -710,6 +714,11 @@ class VPLiveOut : public VPUser {
 
   PHINode *getPhi() const { return Phi; }
 
+  /// Returns to incoming block for which to set the value.
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ayalz wrote:

The above documentation of fixPhi() needs to be updated, according to the change in its implementation?

https://github.com/llvm/llvm-project/pull/94760