Add benchmark output to compiler stats.

runtime/vm/compiler_stats.h

 // Copyright (c) 2011, 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_COMPILER_STATS_H_
 #define VM_COMPILER_STATS_H_
 
 #include "vm/allocation.h"
 #include "vm/flags.h"
 #include "vm/isolate.h"
 #include "vm/timer.h"
 
 
 namespace dart {
 
 
 DECLARE_FLAG(bool, compiler_stats);
+DECLARE_FLAG(bool, compiler_benchmark);
 
 class CompilerStats {
  public:
   explicit CompilerStats(Isolate* isolate);
   ~CompilerStats() { }
 
   Isolate* isolate_;
 
-  // TODO(hausner): add these timers to the timer list maintained
-  // in the isolate?
   Timer parser_timer;         // Cumulative runtime of parser.
   Timer scanner_timer;        // Cumulative runtime of scanner.
   Timer codegen_timer;        // Cumulative runtime of code generator.
   Timer graphbuilder_timer;   // Included in codegen_timer.
   Timer ssa_timer;            // Included in codegen_timer.
   Timer graphinliner_timer;   // Included in codegen_timer.
   Timer graphinliner_parse_timer;  // Included in codegen_timer.
   Timer graphinliner_build_timer;  // Included in codegen_timer.
   Timer graphinliner_ssa_timer;    // Included in codegen_timer.
   Timer graphinliner_opt_timer;    // Included in codegen_timer.
   Timer graphinliner_subst_timer;  // Included in codegen_timer.
 
   Timer graphoptimizer_timer;  // Included in codegen_timer.
   Timer graphcompiler_timer;   // Included in codegen_timer.
   Timer codefinalizer_timer;   // Included in codegen_timer.
 
   int64_t num_tokens_total;    // Isolate + VM isolate
   int64_t num_literal_tokens_total;
   int64_t num_ident_tokens_total;
+  int64_t num_tokens_scanned;
   int64_t num_tokens_consumed;
   int64_t num_cached_consts;
   int64_t num_const_cache_hits;
 
   int64_t num_classes_parsed;
   int64_t num_class_tokens;
   int64_t num_functions_parsed;      // Num parsed functions.
   int64_t num_functions_compiled;    // Num unoptimized compilations.
   int64_t num_functions_optimized;   // Num optimized compilations.
   int64_t num_func_tokens_compiled;
   int64_t num_implicit_final_getters;
   int64_t num_method_extractors;
 
   int64_t src_length;          // Total number of characters in source.
   int64_t total_code_size;     // Bytes allocated for code and meta info.
   int64_t total_instr_size;    // Total size of generated code in bytes.
   int64_t pc_desc_size;
   int64_t vardesc_size;
   char* text;
+  bool use_benchmark_output;
 
+  // Update stats that are computed, e.g. token count.
+  void Update();
+
+  void EnableBenchmark();
+  char* BenchmarkOutput();
   char* PrintToZone();
 };
 
 // TODO(hausner): make the increment thread-safe.
 #define INC_STAT(thread, counter, incr)                                        \
   if (FLAG_compiler_stats) {                                                   \
       (thread)->isolate()->compiler_stats()->counter += (incr); }
 
 #define STAT_VALUE(thread, counter)                                            \
   ((FLAG_compiler_stats != false) ?                                            \
       (thread)->isolate()->compiler_stats()->counter : 0)
 
 #define CSTAT_TIMER_SCOPE(thr, t)                                              \
   TimerScope timer(FLAG_compiler_stats,                                        \
       FLAG_compiler_stats ? &((thr)->isolate()->compiler_stats()->t) : NULL,   \
       thr);
 
 }  // namespace dart
 
 #endif  // VM_COMPILER_STATS_H_