diff --git a/llvm/test/tools/llvm-profgen/inline-cs-pseudoprobe.test b/llvm/test/tools/llvm-profgen/inline-cs-pseudoprobe.test
--- a/llvm/test/tools/llvm-profgen/inline-cs-pseudoprobe.test
+++ b/llvm/test/tools/llvm-profgen/inline-cs-pseudoprobe.test
@@ -11,8 +11,8 @@
 ; CHECK-NEXT: !CFGChecksum: 138950591924
 ; CHECK-NEXT:[main:2 @ foo:8 @ bar]:56:14
 ; CHECK-NEXT: 1: 14
-; CHECK-NEXT: 2: 14
-; CHECK-NEXT: 3: 14
+; CHECK-NEXT: 2: 18446744073709551615
+; CHECK-NEXT: 3: 18446744073709551615
 ; CHECK-NEXT: 4: 14
 ; CHECK-NEXT: !CFGChecksum: 72617220756
 
diff --git a/llvm/test/tools/llvm-profgen/noinline-cs-pseudoprobe.test b/llvm/test/tools/llvm-profgen/noinline-cs-pseudoprobe.test
--- a/llvm/test/tools/llvm-profgen/noinline-cs-pseudoprobe.test
+++ b/llvm/test/tools/llvm-profgen/noinline-cs-pseudoprobe.test
@@ -10,8 +10,8 @@
 ; CHECK-NEXT: !CFGChecksum: 138950591924
 ; CHECK-NEXT:[main:2 @ foo:8 @ bar]:60:15
 ; CHECK-NEXT: 1: 15
-; CHECK-NEXT: 2: 15
-; CHECK-NEXT: 3: 15
+; CHECK-NEXT: 2: 18446744073709551615
+; CHECK-NEXT: 3: 18446744073709551615
 ; CHECK-NEXT: 4: 15
 ; CHECK-NEXT: !CFGChecksum: 72617220756
 
diff --git a/llvm/tools/llvm-profgen/ProfileGenerator.cpp b/llvm/tools/llvm-profgen/ProfileGenerator.cpp
--- a/llvm/tools/llvm-profgen/ProfileGenerator.cpp
+++ b/llvm/tools/llvm-profgen/ProfileGenerator.cpp
@@ -492,7 +492,16 @@
     FunctionSamples &FunctionProfile =
         getFunctionProfileForLeafProbe(ContextStrStack, Probe, Binary);
 
-    FunctionProfile.addBodySamples(Probe->Index, 0, Count);
+    // Use UINT64_MAX to mark sample count for a dangling probe
+    // Dangling probes are the probes associated to an empty block. With this
+    // place holder, sample count on dangling probe will not be trusted by the
+    // compiler and it will rely on the counts inference algorithm to get the
+    // probe a reasonable count.
+    if (Probe->isDangling())
+      FunctionProfile.addBodySamples(Probe->Index, 0, UINT64_MAX);
+    else
+      FunctionProfile.addBodySamples(Probe->Index, 0, Count);
+
     FunctionProfile.addTotalSamples(Count);
     if (Probe->isEntry()) {
       FunctionProfile.addHeadSamples(Count);