Remove deoptimization index PC descriptors.

runtime/vm/flow_graph_compiler.h

 // Copyright (c) 2012, 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_FLOW_GRAPH_COMPILER_H_
 #define VM_FLOW_GRAPH_COMPILER_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 #include "vm/assembler_macros.h"
@@ skipping 44 matching lines @@
   // List of moves not yet resolved.
   GrowableArray<MoveOperands*> moves_;
 };
 
 
 // Used for describing a deoptimization point after call (lazy deoptimization).
 // For deoptimization before instruction use class CompilerDeoptInfoWithStub.
 class CompilerDeoptInfo : public ZoneAllocated {
  public:
   CompilerDeoptInfo(intptr_t deopt_id, DeoptReasonId reason)
-      : deopt_id_(deopt_id), reason_(reason), deoptimization_env_(NULL) {}
-
-  void set_deoptimization_env(Environment* env) {
-    deoptimization_env_ = env;
-  }
+      : pc_offset_(-1),
+        deopt_id_(deopt_id),
+        reason_(reason),
+        deoptimization_env_(NULL) {}
 
   RawDeoptInfo* CreateDeoptInfo(FlowGraphCompiler* compiler);
 
   void AllocateIncomingParametersRecursive(Environment* env,
                                            intptr_t* stack_height);
 
   // No code needs to be generated.
   virtual void GenerateCode(FlowGraphCompiler* compiler, intptr_t stub_ix) {}
 
   // Builds deopt-after continuation point.
   virtual void BuildReturnAddress(DeoptInfoBuilder* builder,
                                   const Function& function,
                                   intptr_t slot_ix);
 
+  intptr_t pc_offset() const { return pc_offset_; }
+  void set_pc_offset(intptr_t offset) { pc_offset_ = offset; }
+
   intptr_t deopt_id() const { return deopt_id_; }
+
   DeoptReasonId reason() const { return reason_; }
+
   const Environment* deoptimization_env() const { return deoptimization_env_; }
+  void set_deoptimization_env(Environment* env) { deoptimization_env_ = env; }
 
  private:
+  intptr_t pc_offset_;
   const intptr_t deopt_id_;
   const DeoptReasonId reason_;
   Environment* deoptimization_env_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilerDeoptInfo);
 };
 
 
 class CompilerDeoptInfoWithStub : public CompilerDeoptInfo {
  public:
@@ skipping 43 matching lines @@
 #include "vm/flow_graph_compiler_ia32.h"
 #elif defined(TARGET_ARCH_X64)
 #include "vm/flow_graph_compiler_x64.h"
 #elif defined(TARGET_ARCH_ARM)
 #include "vm/flow_graph_compiler_arm.h"
 #else
 #error Unknown architecture.
 #endif
 
 #endif  // VM_FLOW_GRAPH_COMPILER_H_