[llvm] [GlobalMerge][NFC] Skip sorting by profitability when it is not needed (PR #124146)

[via llvm-commits]

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``````````bash
git-clang-format --diff bda39a6067833c9353adbc42bddb1b5808bcf44b 0bbe4bad5c364c1d7fbf3bdb9ebb7fcb88cb470b --extensions cpp -- llvm/lib/CodeGen/GlobalMerge.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/CodeGen/GlobalMerge.cpp b/llvm/lib/CodeGen/GlobalMerge.cpp
index 40e56a66c2..e137322459 100644
--- a/llvm/lib/CodeGen/GlobalMerge.cpp
+++ b/llvm/lib/CodeGen/GlobalMerge.cpp
@@ -438,7 +438,7 @@ bool GlobalMergeImpl::doMerge(SmallVectorImpl<GlobalVariable *> &Globals,
   }
 
   // Now we found a bunch of sets of globals used together. We accumulated
-  // the number of times we encountered the sets (i.e., the number of functions 
+  // the number of times we encountered the sets (i.e., the number of functions
   // that use that exact set of globals). Multiply that by the size of the set
   // to give us a crude profitability metric.
   llvm::stable_sort(UsedGlobalSets,

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https://github.com/llvm/llvm-project/pull/124146