Experimental: fix a frame-height issue with eval on ARM.

src/codegen.cc

 // Copyright 2007-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 442 matching lines @@
 
   for (int i = 0; i < length; i++) {
     Comment cmnt(masm(), "[ Case clause");
     masm()->bind(&case_labels[i]);
     VisitStatements(cases->at(i)->statements());
 
     // If control flow did not fall off the end of the case statement,
     // we restore the expected frame for the next iteration (or exit
     // of the loop).  Otherwise we have to generate merge code to
     // expectation at the next case.
-    if (frame_ == NULL) {
+    if (!has_valid_frame()) {
       RegisterFile non_frame_registers = RegisterAllocator::Reserved();
       SetFrame(new VirtualFrame(start_frame), &non_frame_registers);
     } else {
       frame_->MergeTo(start_frame);
     }
   }
 }
 
 
 bool CodeGenerator::TryGenerateFastCaseSwitchStatement(SwitchStatement* node) {
@@ skipping 89 matching lines @@
 void ArgumentsAccessStub::Generate(MacroAssembler* masm) {
   switch (type_) {
     case READ_LENGTH: GenerateReadLength(masm); break;
     case READ_ELEMENT: GenerateReadElement(masm); break;
     case NEW_OBJECT: GenerateNewObject(masm); break;
   }
 }
 
 
 } }  // namespace v8::internal