Revert of [Crankshaft] Always check for stubs marked to not require an eager frame.

src/code-stubs-hydrogen.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/code-stubs.h"
 
 #include "src/bailout-reason.h"
 #include "src/crankshaft/hydrogen.h"
 #include "src/crankshaft/lithium.h"
 #include "src/field-index.h"
@@ skipping 2043 matching lines @@
 }
 
 
 template<>
 HValue* CodeStubGraphBuilder<RegExpConstructResultStub>::BuildCodeStub() {
   // Determine the parameters.
   HValue* length = GetParameter(RegExpConstructResultStub::kLength);
   HValue* index = GetParameter(RegExpConstructResultStub::kIndex);
   HValue* input = GetParameter(RegExpConstructResultStub::kInput);
 
-  // TODO(turbofan): This codestub has regressed to need a frame on ia32 at some
-  // point and wasn't caught since it wasn't built in the snapshot. We should
-  // probably just replace with a TurboFan stub rather than fixing it.
-#if !V8_TARGET_ARCH_IA32
   info()->MarkMustNotHaveEagerFrame();
-#endif
 
   return BuildRegExpConstructResult(length, index, input);
 }
 
 
 Handle<Code> RegExpConstructResultStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 
@@ skipping 237 matching lines @@
   return Pop();
 }
 
 
 Handle<Code> KeyedLoadGenericStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 }  // namespace internal
 }  // namespace v8