[llvm] [LoopVectorize] - Add tighter runtime memory check threshold for inner loops. (PR #219489)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Transforms/Vectorize/LoopVectorize.cpp --diff_from_common_commit
``````````

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``````````diff
diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index c3d60f1a9..197a3f31a 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -1606,7 +1606,8 @@ public:
     // combinatorial explosion of pointer-pair comparisons), the checks execute
     // on every outer-loop iteration, causing severe overhead from both the
     // check instructions themselves and the resulting register pressure.
-    if (L->getParentLoop() && NumChecks > VectorizeMemoryCheckInnerLoopThreshold)
+    if (L->getParentLoop() &&
+        NumChecks > VectorizeMemoryCheckInnerLoopThreshold)
       EffectiveThreshold = VectorizeMemoryCheckInnerLoopThreshold;
 
     CostTooHigh = NumChecks > EffectiveThreshold;
@@ -1623,8 +1624,8 @@ public:
                        ? ""
                        : " (inner loop threshold exceeded)");
       });
-      LLVM_DEBUG(dbgs() << "LV: Too many memory checks needed ("
-                        << NumChecks << " > " << EffectiveThreshold << ").\n");
+      LLVM_DEBUG(dbgs() << "LV: Too many memory checks needed (" << NumChecks
+                        << " > " << EffectiveThreshold << ").\n");
       return;
     }
 

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https://github.com/llvm/llvm-project/pull/219489