[llvm] [LoopInterchange] Fix overflow in cost calculation (PR #111807)

[via llvm-commits]

github-actions[bot] wrote:

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``````````bash
git-clang-format --diff 60f3e67dae90f43698ae67167d0e024ff2ab0932 c61b8f02c100cb11ba85032cc9afbbb2995040ca --extensions cpp -- llvm/lib/Analysis/LoopCacheAnalysis.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Analysis/LoopCacheAnalysis.cpp b/llvm/lib/Analysis/LoopCacheAnalysis.cpp
index 3e03b5ba26..fc50489ee7 100644
--- a/llvm/lib/Analysis/LoopCacheAnalysis.cpp
+++ b/llvm/lib/Analysis/LoopCacheAnalysis.cpp
@@ -719,7 +719,8 @@ CacheCost::computeLoopCacheCost(const Loop &L,
     CacheCostTy RefGroupCost = computeRefGroupCacheCost(RG, L);
 
     // Saturate the cost to INT MAX if the value can overflow.
-    if (RefGroupCost > (std::numeric_limits<int64_t>::max() / TripCountsProduct))
+    if (RefGroupCost >
+        (std::numeric_limits<int64_t>::max() / TripCountsProduct))
       LoopCost = std::numeric_limits<int64_t>::max();
     else
       LoopCost += RefGroupCost * TripCountsProduct;

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https://github.com/llvm/llvm-project/pull/111807