More reduction of accessing TLS by caching/passing isolate value.

runtime/vm/deopt_instructions.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_DEOPT_INSTRUCTIONS_H_
 #define VM_DEOPT_INSTRUCTIONS_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
@@ skipping 277 matching lines @@
 };
 
 
 // Builds a deoptimization info table, one DeoptInfo at a time.  Call AddXXX
 // methods in the order of their target, starting wih deoptimized code
 // continuation pc and ending with the first argument of the deoptimized
 // code.  Call CreateDeoptInfo to write the accumulated instructions into
 // the heap and reset the builder's internal state for the next DeoptInfo.
 class DeoptInfoBuilder : public ValueObject {
  public:
-  explicit DeoptInfoBuilder(const intptr_t num_args);
+  DeoptInfoBuilder(Isolate* isolate, const intptr_t num_args);
 
   // 'object_table' holds all objects referred to by DeoptInstr in
   // all DeoptInfo instances for a single Code object.
   const GrowableObjectArray& object_table() { return object_table_; }
 
   // Return address before instruction.
   void AddReturnAddress(const Code& code,
                         intptr_t deopt_id,
                         intptr_t dest_index);
 
@@ skipping 34 matching lines @@
   intptr_t FindOrAddObjectInTable(const Object& obj) const;
   intptr_t FindMaterialization(MaterializeObjectInstr* mat) const;
   intptr_t CalculateStackIndex(const Location& source_loc) const;
 
   intptr_t FrameSize() const {
     return instructions_.length() - frame_start_;
   }
 
   void AddConstant(const Object& obj, intptr_t dest_index);
 
+  Isolate* isolate() const { return isolate_; }
+
+  Isolate* isolate_;
+
   GrowableArray<DeoptInstr*> instructions_;
   const GrowableObjectArray& object_table_;
   const intptr_t num_args_;
 
   // Used to compress entries by sharing suffixes.
   TrieNode* trie_root_;
   intptr_t current_info_number_;
 
   intptr_t frame_start_;
   GrowableArray<MaterializeObjectInstr*> materializations_;
@@ skipping 29 matching lines @@
                        DeoptInfo* info,
                        Smi* reason);
 
  private:
   static const intptr_t kEntrySize = 3;
 };
 
 }  // namespace dart
 
 #endif  // VM_DEOPT_INSTRUCTIONS_H_