Add dynamic stack frame alignment to optimized functions with untagged doubles on the stack.

src/deoptimizer.cc

 // Copyright 2011 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 305 matching lines @@
                          Code* optimized_code)
     : isolate_(isolate),
       function_(function),
       bailout_id_(bailout_id),
       bailout_type_(type),
       from_(from),
       fp_to_sp_delta_(fp_to_sp_delta),
       input_(NULL),
       output_count_(0),
       output_(NULL),
+      frame_alignment_marker_(isolate->heap()->frame_alignment_marker()),
+      has_alignment_padding_(0),
       deferred_heap_numbers_(0) {
   if (FLAG_trace_deopt && type != OSR) {
     if (type == DEBUGGER) {
       PrintF("**** DEOPT FOR DEBUGGER: ");
     } else {
       PrintF("**** DEOPT: ");
     }
     function->PrintName();
     PrintF(" at bailout #%u, address 0x%" V8PRIxPTR ", frame size %d\n",
            bailout_id,
@@ skipping 1144 matching lines @@
 
 void DeoptimizedFrameInfo::Iterate(ObjectVisitor* v) {
   v->VisitPointer(BitCast<Object**>(&function_));
   v->VisitPointers(parameters_, parameters_ + parameters_count_);
   v->VisitPointers(expression_stack_, expression_stack_ + expression_count_);
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 } }  // namespace v8::internal