[llvm-branch-commits] [llvm] [LV] Mask off possibly aliasing vector lanes (PR #100579)

[Benjamin Maxwell via llvm-branch-commits]

================
@@ -1416,14 +1466,14 @@ void VPlanTransforms::addActiveLaneMask(
   auto *FoundWidenCanonicalIVUser =
       find_if(Plan.getCanonicalIV()->users(),
               [](VPUser *U) { return isa<VPWidenCanonicalIVRecipe>(U); });
-  assert(FoundWidenCanonicalIVUser &&
+  assert(FoundWidenCanonicalIVUser && *FoundWidenCanonicalIVUser &&
----------------
MacDue wrote:


This looks a little odd. Doesn't `find_if` return an iterator? 
```suggestion
  auto IVUsers = Plan.getCanonicalIV()->users();
  /// ...
  assert(FoundWidenCanonicalIVUser != IVUsers.end() && "Must have widened 
canonical IV when tail folding!"); 
```

https://github.com/llvm/llvm-project/pull/100579
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