[llvm] [VPlan] Use ResumePhi to create reduction resume phis. (PR #110004)

[via llvm-commits]

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@@ -7467,23 +7467,31 @@ static void addRuntimeUnrollDisableMetaData(Loop *L) {
 }
 
 // Check if \p RedResult is a ComputeReductionResult instruction, and if it is
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ayalz wrote:

```suggestion
// If \p RedResult is a ComputeReductionResult when vectorizing the epilog loop,
```

https://github.com/llvm/llvm-project/pull/110004