VM: Store edge counters in one per-function array.

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/code_descriptors.h"
@@ skipping 369 matching lines @@
   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);
 
   bool NeedsEdgeCounter(TargetEntryInstr* block);
 
-  void EmitEdgeCounter();
-
-#if !defined(TARGET_ARCH_ARM64) && !defined(TARGET_ARCH_MIPS)
-  static int32_t EdgeCounterIncrementSizeInBytes();
-#endif  // !TARGET_ARCH_ARM64 && !TARGET_ARCH_MIPS
+  void EmitEdgeCounter(intptr_t edge_id);
 
   void EmitOptimizedInstanceCall(const StubEntry& stub_entry,
                                  const ICData& ic_data,
                                  intptr_t argument_count,
                                  intptr_t deopt_id,
                                  intptr_t token_pos,
                                  LocationSummary* locs);
 
   void EmitInstanceCall(const StubEntry& stub_entry,
                         const ICData& ic_data,
@@ skipping 125 matching lines @@
 
   Isolate* isolate() const { return isolate_; }
   Zone* zone() const { return zone_; }
 
   void AddStubCallTarget(const Code& code);
 
   const Array& inlined_code_intervals() const {
     return inlined_code_intervals_;
   }
 
+  RawArray* edge_counters_array() const {
+    return edge_counters_array_.raw();
+  }
+
   RawArray* InliningIdToFunction() const;
 
   RawArray* CallerInliningIdMap() const;
 
  private:
   friend class CheckStackOverflowSlowPath;  // For pending_deoptimization_env_.
 
   void EmitFrameEntry();
 
   void AddStaticCallTarget(const Function& function);
@@ skipping 174 matching lines @@
   // Currently instructions generate deopt stubs internally by
   // calling AddDeoptStub.  To communicate deoptimization environment
   // 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_;
 
   intptr_t lazy_deopt_pc_offset_;
 
   ZoneGrowableArray<const ICData*>* deopt_id_to_ic_data_;
 
+  Array& edge_counters_array_;
+
   Array& inlined_code_intervals_;
   const GrowableArray<const Function*>& inline_id_to_function_;
   const GrowableArray<intptr_t>& caller_inline_id_;
 
   DISALLOW_COPY_AND_ASSIGN(FlowGraphCompiler);
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_COMPILER_H_