Unify SoftDeoptimize and Deoptimize hydrogen instructions

src/code-stubs-hydrogen.cc

Index: src/code-stubs-hydrogen.cc
diff --git a/src/code-stubs-hydrogen.cc b/src/code-stubs-hydrogen.cc
index 21b034100b64cd36ddf37ae3e406f3980967b181..4b2fc6960d902118a9f864af175584beda704dc0 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -178,7 +178,7 @@ bool CodeStubGraphBuilderBase::BuildGraph() {
   AddInstruction(context_);
   start_environment->BindContext(context_);
 
-  AddSimulate(BailoutId::StubEntry());
+  Add<HSimulate>(BailoutId::StubEntry());
 
   NoObservableSideEffectsScope no_effects(this);
 
@@ -366,9 +366,10 @@ HValue* CodeStubGraphBuilder<FastCloneShallowArrayStub>::BuildCodeStub() {
                                                length));
   }
 
-  HValue* result = environment()->Pop();
   checker.ElseDeopt();
-  return result;
+  checker.End();
+
+  return environment()->Pop();
 }
 
 
@@ -416,8 +417,11 @@ HValue* CodeStubGraphBuilder<FastCloneShallowObjectStub>::BuildCodeStub() {
     AddStore(object, access, AddLoad(boilerplate, access));
   }
 
+  environment()->Push(object);
   checker.ElseDeopt();
-  return object;
+  checker.End();
+
+  return environment()->Pop();
 }
 
 
@@ -897,8 +901,7 @@ HValue* CodeStubGraphBuilder<ElementsTransitionAndStoreStub>::BuildCodeStub() {
 
   if (FLAG_trace_elements_transitions) {
     // Tracing elements transitions is the job of the runtime.
-    current_block()->FinishExitWithDeoptimization(HDeoptimize::kUseAll);
-    set_current_block(NULL);
+    Add<HDeoptimize>(Deoptimizer::EAGER);
   } else {
     info()->MarkAsSavesCallerDoubles();