Reimplement stack manipulations for LiveEdit

src/scopeinfo.cc

Index: src/scopeinfo.cc
diff --git a/src/scopeinfo.cc b/src/scopeinfo.cc
index 2091ca726caf05c131b3429ed2a7844eb1f44b94..96922071d3811675590847b40cde86a94e03dda5 100644
--- a/src/scopeinfo.cc
+++ b/src/scopeinfo.cc
@@ -244,7 +244,7 @@ static Object** ReadList(Object** p,
 
 
 template<class Allocator>
-ScopeInfo<Allocator>::ScopeInfo(Code* code)
+ScopeInfo<Allocator>::ScopeInfo(Code* code, FunctionScopeState scope_state)
   : function_name_(Factory::empty_symbol()),
     parameters_(4),
     stack_slots_(8),
@@ -259,6 +259,12 @@ ScopeInfo<Allocator>::ScopeInfo(Code* code)
   p = ReadList<Allocator>(p, &context_slots_, &context_modes_);
   p = ReadList<Allocator>(p, &parameters_);
   p = ReadList<Allocator>(p, &stack_slots_);
+  if (scope_state == FUNCTION_SCOPE_NOT_ENTERED) {
+    // Remove all locals from scope info if we are in restarted state.
+    context_slots_.Rewind(0);
+    context_modes_.Rewind(0);
+    stack_slots_.Rewind(0);
+  }
   ASSERT((p - p0) * kPointerSize == code->sinfo_size());
 }