[crankshaft] [ia32] Remove dynamic frame alignment optimization.

src/frames.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/frames.h"
 
 #include <sstream>
 
 #include "src/ast/ast.h"
 #include "src/ast/scopeinfo.h"
@@ skipping 473 matching lines @@
 #endif
 
 
 StackFrame::Type StackFrame::GetCallerState(State* state) const {
   ComputeCallerState(state);
   return ComputeType(iterator_, state);
 }
 
 
 Address StackFrame::UnpaddedFP() const {
-#if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X87
-  if (!is_optimized()) return fp();
-  int32_t alignment_state = Memory::int32_at(
-    fp() + JavaScriptFrameConstants::kDynamicAlignmentStateOffset);
-
-  return (alignment_state == kAlignmentPaddingPushed) ?
-    (fp() + kPointerSize) : fp();
-#else
   return fp();
-#endif
 }
 
 
 Code* EntryFrame::unchecked_code() const {
   return isolate()->heap()->js_entry_code();
 }
 
 
 void EntryFrame::ComputeCallerState(State* state) const {
   GetCallerState(state);
@@ skipping 1144 matching lines @@
   for (StackFrameIterator it(isolate); !it.done(); it.Advance()) {
     StackFrame* frame = AllocateFrameCopy(it.frame(), zone);
     list.Add(frame, zone);
   }
   return list.ToVector();
 }
 
 
 }  // namespace internal
 }  // namespace v8