Use the location summary to represent safepoint information.

runtime/vm/flow_graph_compiler_x64.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_X64_H_
 #define VM_FLOW_GRAPH_COMPILER_X64_H_
 
 #ifndef VM_FLOW_GRAPH_COMPILER_H_
 #error Include flow_graph_compiler.h instead of flow_graph_compiler_x64.h.
 #endif
@@ skipping 63 matching lines @@
                             Label* not_double_or_smi);
 
   // Returns 'true' if code generation for this function is complete, i.e.,
   // no fall-through to regular code is needed.
   bool TryIntrinsify();
 
   void GenerateCallRuntime(intptr_t deopt_id,
                            intptr_t token_pos,
                            intptr_t try_index,
                            const RuntimeEntry& entry,
-                           BitmapBuilder* stack_bitmap);
+                           LocationSummary* locs);
 
   void GenerateCall(intptr_t token_pos,
                     intptr_t try_index,
                     const ExternalLabel* label,
                     PcDescriptors::Kind kind,
-                    BitmapBuilder* stack_bitmap);
+                    LocationSummary* locs);
 
   void GenerateAssertAssignable(intptr_t deopt_id,
                                 intptr_t token_pos,
                                 intptr_t try_index,
                                 const AbstractType& dst_type,
                                 const String& dst_name,
-                                BitmapBuilder* stack_bitmap);
+                                LocationSummary* locs);
 
   void GenerateInstanceOf(intptr_t deopt_id,
                           intptr_t token_pos,
                           intptr_t try_index,
                           const AbstractType& type,
                           bool negate_result,
-                          BitmapBuilder* stack_bitmap);
+                          LocationSummary* locs);
 
   void GenerateInstanceCall(intptr_t deopt_id,
                             intptr_t token_pos,
                             intptr_t try_index,
                             const String& function_name,
                             intptr_t argument_count,
                             const Array& argument_names,
                             intptr_t checked_argument_count,
-                            BitmapBuilder* stack_bitmap);
+                            LocationSummary* locs);
 
   void GenerateStaticCall(intptr_t deopt_id,
                           intptr_t token_pos,
                           intptr_t try_index,
                           const Function& function,
                           intptr_t argument_count,
                           const Array& argument_names,
-                          BitmapBuilder* stack_bitmap);
+                          LocationSummary* locs);
 
   void GenerateInlinedMathSqrt(Label* done);
 
   void GenerateNumberTypeCheck(Register kClassIdReg,
                                const AbstractType& type,
                                Label* is_instance_lbl,
                                Label* is_not_instance_lbl);
   void GenerateStringTypeCheck(Register kClassIdReg,
                                Label* is_instance_lbl,
                                Label* is_not_instance_lbl);
   void GenerateListTypeCheck(Register kClassIdReg,
                              Label* is_instance_lbl);
 
   void EmitComment(Instruction* instr);
 
   void EmitClassChecksNoSmi(const ICData& ic_data,
                             Register instance_reg,
                             Register temp_reg,
                             Label* deopt);
 
-  // Returns pc-offset (in bytes) of the pc after the call, can be used to emit
-  // pc-descriptor information.
-  intptr_t EmitInstanceCall(ExternalLabel* target_label,
-                            const ICData& ic_data,
-                            const Array& arguments_descriptor,
-                            intptr_t argument_count);
+  void EmitInstanceCall(ExternalLabel* target_label,
+                        const ICData& ic_data,
+                        const Array& arguments_descriptor,
+                        intptr_t argument_count,
+                        intptr_t deopt_id,
+                        intptr_t token_pos,
+                        intptr_t try_index,
+                        LocationSummary* locs);
 
   void EmitTestAndCall(const ICData& ic_data,
                        Register class_id_reg,
                        intptr_t arg_count,
                        const Array& arg_names,
                        Label* deopt,
                        Label* done,  // Can be NULL, which means fallthrough.
                        intptr_t deopt_id,
                        intptr_t token_index,
                        intptr_t try_index,
-                       BitmapBuilder* stack_bitmap);
+                       LocationSummary* locs);
 
   void EmitDoubleCompareBranch(Condition true_condition,
                                XmmRegister left,
                                XmmRegister right,
                                BranchInstr* branch);
   void EmitDoubleCompareBool(Condition true_condition,
                              XmmRegister left,
                              XmmRegister right,
                              Register result);
 
   intptr_t StackSize() const;
 
   // Returns assembler label associated with the given block entry.
   Label* GetBlockLabel(BlockEntryInstr* block_entry) const;
 
   // Returns true if there is a next block after the current one in
   // the block order and if it is the given block.
   bool IsNextBlock(BlockEntryInstr* block_entry) const;
 
   void AddExceptionHandler(intptr_t try_index, intptr_t pc_offset);
   void AddCurrentDescriptor(PcDescriptors::Kind kind,
                             intptr_t deopt_id,
                             intptr_t token_pos,
                             intptr_t try_index);
+
+  void RecordSafepoint(LocationSummary* locs);
+
   Label* AddDeoptStub(intptr_t deopt_id,
                       intptr_t try_index_,
                       DeoptReasonId reason);
 
   void AddSlowPathCode(SlowPathCode* slow_path);
 
   void FinalizeExceptionHandlers(const Code& code);
   void FinalizePcDescriptors(const Code& code);
   void FinalizeDeoptInfo(const Code& code);
   void FinalizeStackmaps(const Code& code);
@@ skipping 15 matching lines @@
  private:
   friend class DeoptimizationStub;
 
   void GenerateDeferredCode();
 
   void EmitInstructionPrologue(Instruction* instr);
 
   // Emit code to load a Value into register 'dst'.
   void LoadValue(Register dst, Value* value);
 
-  // Returns pc-offset (in bytes) of the pc after the call, can be used to emit
-  // pc-descriptor information.
-  intptr_t EmitStaticCall(const Function& function,
-                          const Array& arguments_descriptor,
-                          intptr_t argument_count);
+  void EmitStaticCall(const Function& function,
+                      const Array& arguments_descriptor,
+                      intptr_t argument_count,
+                      intptr_t deopt_id,
+                      intptr_t token_pos,
+                      intptr_t try_index,
+                      LocationSummary* locs);
 
   // Type checking helper methods.
   void CheckClassIds(Register class_id_reg,
                      const GrowableArray<intptr_t>& class_ids,
                      Label* is_instance_lbl,
                      Label* is_not_instance_lbl);
 
   RawSubtypeTestCache* GenerateInlineInstanceof(intptr_t token_pos,
                                                 const AbstractType& type,
                                                 Label* is_instance_lbl,
@@ skipping 85 matching lines @@
   // that should be used when deoptimizing we store it in this variable.
   // In future AddDeoptStub should be moved out of the instruction template.
   Environment* pending_deoptimization_env_;
 
   DISALLOW_COPY_AND_ASSIGN(FlowGraphCompiler);
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_COMPILER_X64_H_