Return on the polymorphic hard deopt case to ensure we don't polute phis with fake type information.

src/hydrogen.h

Index: src/hydrogen.h
diff --git a/src/hydrogen.h b/src/hydrogen.h
index 6a4320f2b1d459245ded72e59cc27ce9ab1322ae..b3d51e731fc722ae82ab388936739e02fa7f1bbc 100644
--- a/src/hydrogen.h
+++ b/src/hydrogen.h
@@ -1406,8 +1406,7 @@ class HGraphBuilder {
   HValue* EnforceNumberType(HValue* number, Type* expected);
   HValue* TruncateToNumber(HValue* value, Type** expected);
 
-  void FinishExitWithHardDeoptimization(const char* reason,
-                                        HBasicBlock* continuation);
+  void FinishExitWithHardDeoptimization(const char* reason);
 
   void AddIncrementCounter(StatsCounter* counter);
 
@@ -1798,9 +1797,6 @@ class HGraphBuilder {
       HValue* mask,
       int current_probe);
 
-  void PadEnvironmentForContinuation(HBasicBlock* from,
-                                     HBasicBlock* continuation);
-
   template <class I>
   I* AddInstructionTyped(I* instr) {
     return I::cast(AddInstruction(instr));