Improve compile time constant evaluation

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/atomic.h"
 #include "vm/flags.h"
@@ skipping 23 matching lines @@
   V(graphcompiler_timer, "flow graph compiler timer")                          \
   V(codefinalizer_timer, "code finalization timer")                            \
 
 
 #define STAT_COUNTERS(V)                                                       \
   V(num_tokens_total)                                                          \
   V(num_tokens_scanned)                                                        \
   V(num_tokens_consumed)                                                       \
   V(num_cached_consts)                                                         \
   V(num_const_cache_hits)                                                      \
+  V(num_execute_const)                                                         \
   V(num_classes_parsed)                                                        \
   V(num_class_tokens)                                                          \
   V(num_functions_parsed)                                                      \
   V(num_functions_compiled)                                                    \
   V(num_functions_optimized)                                                   \
   V(num_func_tokens_compiled)                                                  \
   V(num_implicit_final_getters)                                                \
   V(num_method_extractors)                                                     \
   V(src_length)                                                                \
   V(total_code_size)                                                           \
@@ skipping 24 matching lines @@
 
   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_tokens_scanned;
   int64_t num_tokens_consumed;
   int64_t num_cached_consts;
   int64_t num_const_cache_hits;
+  int64_t num_execute_const;
 
   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;
 
@@ skipping 36 matching lines @@
 #define CSTAT_TIMER_SCOPE(thr, t)                                              \
   TimerScope timer(FLAG_support_compiler_stats && FLAG_compiler_stats,         \
       (FLAG_support_compiler_stats && FLAG_compiler_stats) ?                   \
       &((thr)->compiler_stats()->t) : NULL,                                    \
       thr);
 
 
 }  // namespace dart
 
 #endif  // VM_COMPILER_STATS_H_