[BOLT] Use const reference in range-based for loop

[Pribess]

Addressing #91195

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[llvmbot]

@llvm/pr-subscribers-bolt

Author: Heewon Cho (Pribess)

Changes

Addressing #91195

---

Full diff: https://github.com/llvm/llvm-project/pull/92931.diff

1 Files Affected:

• (modified) bolt/include/bolt/Passes/StokeInfo.h (+2-2)

diff --git a/bolt/include/bolt/Passes/StokeInfo.h b/bolt/include/bolt/Passes/StokeInfo.h
index 76417e6a2c3ba..a18c2a05d0153 100644
--- a/bolt/include/bolt/Passes/StokeInfo.h
+++ b/bolt/include/bolt/Passes/StokeInfo.h
@@ -87,10 +87,10 @@ struct StokeFuncInfo {
               << "," << NumBlocks << "," << IsLoopFree << "," << NumLoops << ","
               << MaxLoopDepth << "," << HotSize << "," << TotalSize << ","
               << Score << "," << HasCall << ",\"{ ";
-      for (std::string S : DefIn)
+      for (const std::string &S : DefIn)
         Outfile << "%" << S << " ";
       Outfile << "}\",\"{ ";
-      for (std::string S : LiveOut)
+      for (const std::string &S : LiveOut)
         Outfile << "%" << S << " ";
       Outfile << "}\"," << HeapOut << "," << StackOut << "," << HasRipAddr
               << "," << Omitted << "\n";