Calculate blocks needing a frame and frame (de)construction sites.

src/compiler/instruction.cc

 // Copyright 2014 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/compiler/common-operator.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/instruction.h"
 #include "src/compiler/schedule.h"
 
 namespace v8 {
@@ skipping 369 matching lines @@
                                    bool deferred)
     : successors_(zone),
       predecessors_(zone),
       phis_(zone),
       ao_number_(rpo_number),
       rpo_number_(rpo_number),
       loop_header_(loop_header),
       loop_end_(loop_end),
       code_start_(-1),
       code_end_(-1),
-      deferred_(deferred) {}
+      deferred_(deferred),
+      needs_frame_(false),
+      must_construct_frame_(false),
+      must_deconstruct_frame_(false) {}
 
 
 size_t InstructionBlock::PredecessorIndexOf(RpoNumber rpo_number) const {
   size_t j = 0;
   for (InstructionBlock::Predecessors::const_iterator i = predecessors_.begin();
        i != predecessors_.end(); ++i, ++j) {
     if (*i == rpo_number) break;
   }
   return j;
 }
@@ skipping 343 matching lines @@
       os << " B" << succ.ToInt();
     }
     os << "\n";
   }
   return os;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8