diff --git a/llvm/lib/Transforms/IPO/HotColdSplitting.cpp b/llvm/lib/Transforms/IPO/HotColdSplitting.cpp
--- a/llvm/lib/Transforms/IPO/HotColdSplitting.cpp
+++ b/llvm/lib/Transforms/IPO/HotColdSplitting.cpp
@@ -86,7 +86,7 @@
                                 "multiple of TCC_Basic)"));
 
 static cl::opt<int>
-    SplittingDelta("hotcoldsplit-delta", cl::init(5), cl::Hidden,
+    SplittingDelta("hotcoldsplit-delta", cl::init(0), cl::Hidden,
                    cl::desc("Allowance threshold for blocks with "
                             "Benefit - Penalty >= -Delta to be split. "));