Refactor polymorphic load and inline function graph construction.

src/x64/lithium-x64.h

Index: src/x64/lithium-x64.h
diff --git a/src/x64/lithium-x64.h b/src/x64/lithium-x64.h
index bdc5b2b5cb19ee2a122bc821af5f78eed17b2c3a..268d22f418f8b8512e53cf020ab4d6fe5c39bb44 100644
--- a/src/x64/lithium-x64.h
+++ b/src/x64/lithium-x64.h
@@ -1842,8 +1842,9 @@ class LStackCheck: public LTemplateInstruction<0, 0, 0> {
 class LChunkBuilder;
 class LChunk: public ZoneObject {
  public:
-  explicit LChunk(HGraph* graph)
+  explicit LChunk(CompilationInfo* info, HGraph* graph)
     : spill_slot_count_(0),
+      info_(info),
       graph_(graph),
       instructions_(32),
       pointer_maps_(8),
@@ -1860,6 +1861,7 @@ class LChunk: public ZoneObject {
   int ParameterAt(int index);
   int GetParameterStackSlot(int index) const;
   int spill_slot_count() const { return spill_slot_count_; }
+  CompilationInfo* info() const { return info_; }
   HGraph* graph() const { return graph_; }
   const ZoneList<LInstruction*>* instructions() const { return &instructions_; }
   void AddGapMove(int index, LOperand* from, LOperand* to);
@@ -1896,6 +1898,7 @@ class LChunk: public ZoneObject {
 
  private:
   int spill_slot_count_;
+  CompilationInfo* info_;
   HGraph* const graph_;
   ZoneList<LInstruction*> instructions_;
   ZoneList<LPointerMap*> pointer_maps_;
@@ -1905,8 +1908,9 @@ class LChunk: public ZoneObject {
 
 class LChunkBuilder BASE_EMBEDDED {
  public:
-  LChunkBuilder(HGraph* graph, LAllocator* allocator)
+  LChunkBuilder(CompilationInfo* info, HGraph* graph, LAllocator* allocator)
       : chunk_(NULL),
+        info_(info),
         graph_(graph),
         status_(UNUSED),
         current_instruction_(NULL),
@@ -1935,6 +1939,7 @@ class LChunkBuilder BASE_EMBEDDED {
   };
 
   LChunk* chunk() const { return chunk_; }
+  CompilationInfo* info() const { return info_; }
   HGraph* graph() const { return graph_; }
 
   bool is_unused() const { return status_ == UNUSED; }
@@ -2041,6 +2046,7 @@ class LChunkBuilder BASE_EMBEDDED {
                               HArithmeticBinaryOperation* instr);
 
   LChunk* chunk_;
+  CompilationInfo* info_;
   HGraph* const graph_;
   Status status_;
   HInstruction* current_instruction_;