[turbofan] Add support for deferred code.

src/compiler/schedule.cc

Index: src/compiler/schedule.cc
diff --git a/src/compiler/schedule.cc b/src/compiler/schedule.cc
index 0d6e54cd5b6e0e4e34dd502e73dfb6e861c135a7..ede6eaa691cc119ebc8331f2303e249a44a9a469 100644
--- a/src/compiler/schedule.cc
+++ b/src/compiler/schedule.cc
@@ -13,7 +13,9 @@ namespace internal {
 namespace compiler {
 
 BasicBlock::BasicBlock(Zone* zone, Id id)
-    : rpo_number_(-1),
+    : ao_number_(-1),
+      rpo_number_(-1),
+      deferred_(false),
       dominator_(NULL),
       loop_header_(NULL),
       loop_depth_(0),
@@ -240,6 +242,7 @@ std::ostream& operator<<(std::ostream& os, const Schedule& s) {
   for (BasicBlockVectorIter i = rpo->begin(); i != rpo->end(); ++i) {
     BasicBlock* block = *i;
     os << "--- BLOCK B" << block->id();
+    if (block->deferred()) os << " (deferred)";
     if (block->PredecessorCount() != 0) os << " <- ";
     bool comma = false;
     for (BasicBlock::Predecessors::iterator j = block->predecessors_begin();