diff --git a/src/hotspot/share/opto/compile.cpp b/src/hotspot/share/opto/compile.cpp
index d5ed95187a8..25c7ced8aeb 100644
--- a/src/hotspot/share/opto/compile.cpp
+++ b/src/hotspot/share/opto/compile.cpp
@@ -844,19 +844,9 @@ Compile::Compile( ciEnv* ci_env, ciMethod* target, int osr_bci,
   if (failing())  return;
   NOT_PRODUCT( verify_graph_edges(); )
 
-  // If any phase is randomized for stress testing, seed random number
-  // generation and log the seed for repeatability.
   if (StressLCM || StressGCM || StressIGVN || StressCCP ||
       StressIncrementalInlining || StressMacroExpansion) {
-    if (FLAG_IS_DEFAULT(StressSeed) || (FLAG_IS_ERGO(StressSeed) && directive->RepeatCompilationOption)) {
-      _stress_seed = static_cast<uint>(Ticks::now().nanoseconds());
-      FLAG_SET_ERGO(StressSeed, _stress_seed);
-    } else {
-      _stress_seed = StressSeed;
-    }
-    if (_log != nullptr) {
-      _log->elem("stress_test seed='%u'", _stress_seed);
-    }
+    initialize_stress_seed(directive);
   }
 
   // Now optimize
@@ -983,6 +973,11 @@ Compile::Compile( ciEnv* ci_env,
   _igvn_worklist = new (comp_arena()) Unique_Node_List(comp_arena());
   _types = new (comp_arena()) Type_Array(comp_arena());
   _node_hash = new (comp_arena()) NodeHash(comp_arena(), 255);
+
+  if (StressLCM || StressGCM) {
+    initialize_stress_seed(directive);
+  }
+
   {
     PhaseGVN gvn;
     set_initial_gvn(&gvn);    // not significant, but GraphKit guys use it pervasively
@@ -5068,6 +5063,18 @@ void Compile::remove_speculative_types(PhaseIterGVN &igvn) {
 
 // Auxiliary methods to support randomized stressing/fuzzing.
 
+void Compile::initialize_stress_seed(const DirectiveSet* directive) {
+  if (FLAG_IS_DEFAULT(StressSeed) || (FLAG_IS_ERGO(StressSeed) && directive->RepeatCompilationOption)) {
+    _stress_seed = static_cast<uint>(Ticks::now().nanoseconds());
+    FLAG_SET_ERGO(StressSeed, _stress_seed);
+  } else {
+    _stress_seed = StressSeed;
+  }
+  if (_log != nullptr) {
+    _log->elem("stress_test seed='%u'", _stress_seed);
+  }
+}
+
 int Compile::random() {
   _stress_seed = os::next_random(_stress_seed);
   return static_cast<int>(_stress_seed);
diff --git a/src/hotspot/share/opto/compile.hpp b/src/hotspot/share/opto/compile.hpp
index df93b388daa..e1d9b61f7f8 100644
--- a/src/hotspot/share/opto/compile.hpp
+++ b/src/hotspot/share/opto/compile.hpp
@@ -1278,6 +1278,9 @@ private:
   int random();
   bool randomized_select(int count);
 
+  // seed random number generation and log the seed for repeatability.
+  void initialize_stress_seed(const DirectiveSet* directive);
+
   // supporting clone_map
   CloneMap&     clone_map();
   void          set_clone_map(Dict* d);