[llvm] [NFC][LAA] Minor stylistic/comments improvements (PR #185510)

[Florian Hahn via llvm-commits]

================
@@ -2575,12 +2578,13 @@ bool LoopAccessInfo::analyzeLoop(AAResults *AA, const LoopInfo *LI,
           HasConvergentOp = true;
       }
 
-      // With both a non-vectorizable memory instruction and a convergent
-      // operation, found in this loop, no reason to continue the search.
+      // Unsafe to vectorize and we already found a convergent operation, can
+      // early return now.
       if (HasComplexMemInst && HasConvergentOp)
         return false;
 
-      // Avoid hitting recordAnalysis multiple times.
+      // We know already that the loop is unsafe to vectorize, let's finish our
+      // search for convergent operations.
----------------
fhahn wrote:

```suggestion
    // Already unsafe to vectorize; keep scanning for convergent ops.
```

https://github.com/llvm/llvm-project/pull/185510