[llvm] [LV]Initial support for safe distance in predicated DataWithEVL vectorization mode. (PR #102897)

[via llvm-commits]

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@@ -1362,9 +1378,24 @@ bool VPlanTransforms::tryAddExplicitVectorLength(VPlan &Plan) {
   // Create the ExplicitVectorLengthPhi recipe in the main loop.
   auto *EVLPhi = new VPEVLBasedIVPHIRecipe(StartV, DebugLoc());
   EVLPhi->insertAfter(CanonicalIVPHI);
-  auto *VPEVL = new VPInstruction(VPInstruction::ExplicitVectorLength,
-                                  {EVLPhi, Plan.getTripCount()});
-  VPEVL->insertBefore(*Header, Header->getFirstNonPhi());
+  VPRecipeBase *AVL = EVLPhi;
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ayalz wrote:

nit:
```suggestion
  VPSingleDefRecipe *AVL = EVLPhi;
```
to avoid AVL->getVPSingleValue() below.

https://github.com/llvm/llvm-project/pull/102897