diff --git a/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp b/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
--- a/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
+++ b/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
@@ -105,7 +105,7 @@
     // a very small percentage of value sites have non-zero targets, e.g, 1/30.
     // For those sites with non-zero profile, the average number of targets
     // is usually smaller than 2.
-    cl::init(1.0));
+    cl::init(1.5));
 
 cl::opt<bool> AtomicCounterUpdateAll(
     "instrprof-atomic-counter-update-all", cl::ZeroOrMore,