[Interpreter] Add dispatch counters for each bytecode.

src/d8.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 
 // Defined when linking against shared lib on Windows.
 #if defined(USING_V8_SHARED) && !defined(V8_SHARED)
 #define V8_SHARED
 #endif
 
 #include <errno.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <fstream>
 
 #ifdef V8_SHARED
 #include <assert.h>
 #endif  // V8_SHARED
 
 #ifndef V8_SHARED
 #include <algorithm>
 #include <vector>
 #endif  // !V8_SHARED
 
 #ifdef V8_SHARED
 #include "include/v8-testing.h"
 #endif  // V8_SHARED
 
 #ifdef ENABLE_VTUNE_JIT_INTERFACE
 #include "src/third_party/vtune/v8-vtune.h"
 #endif
 
 #include "src/d8.h"
 #include "src/ostreams.h"
 
 #include "include/libplatform/libplatform.h"
 #ifndef V8_SHARED
 #include "src/api.h"
 #include "src/base/cpu.h"
 #include "src/base/logging.h"
 #include "src/base/platform/platform.h"
 #include "src/base/sys-info.h"
 #include "src/basic-block-profiler.h"
+#include "src/interpreter/interpreter.h"
 #include "src/snapshot/natives.h"
 #include "src/utils.h"
 #include "src/v8.h"
 #endif  // !V8_SHARED
 
 #if !defined(_WIN32) && !defined(_WIN64)
 #include <unistd.h>  // NOLINT
 #else
 #include <windows.h>  // NOLINT
 #if defined(_MSC_VER)
@@ skipping 1214 matching lines @@
 #ifndef V8_SHARED
 struct CounterAndKey {
   Counter* counter;
   const char* key;
 };
 
 
 inline bool operator<(const CounterAndKey& lhs, const CounterAndKey& rhs) {
   return strcmp(lhs.key, rhs.key) < 0;
 }
+
+void Shell::WriteInterpreterDispatchCounters(Isolate* isolate) {
+  std::ofstream stream(i::FLAG_trace_ignition_dispatches_output_file);
+
+  uintptr_t* handler_dispatch_counters = reinterpret_cast<i::Isolate*>(isolate)
+                                             ->interpreter()
+                                             ->dispatch_counters();
+  stream << '{';
+  for (int counter_index = 0;
+       counter_index <= static_cast<int>(i::interpreter::Bytecode::kLast);
+       ++counter_index) {
+    if (counter_index > 0) stream << ", ";
+    i::interpreter::Bytecode bytecode =
+        i::interpreter::Bytecodes::FromByte(counter_index);
+    stream << '\"' << i::interpreter::Bytecodes::ToString(bytecode)
+           << "\": " << handler_dispatch_counters[counter_index];
+  }
+  stream << '}';
+}
 #endif  // !V8_SHARED
 
 
 void Shell::OnExit(v8::Isolate* isolate) {
 #ifndef V8_SHARED
   if (i::FLAG_dump_counters) {
     int number_of_counters = 0;
     for (CounterMap::Iterator i(counter_map_); i.More(); i.Next()) {
       number_of_counters++;
     }
@@ skipping 17 matching lines @@
         printf("| c:%-60s | %11i |\n", key, counter->count());
         printf("| t:%-60s | %11i |\n", key, counter->sample_total());
       } else {
         printf("| %-62s | %11i |\n", key, counter->count());
       }
     }
     printf("+----------------------------------------------------------------+"
            "-------------+\n");
     delete [] counters;
   }
+
+  if (i::FLAG_trace_ignition_dispatches) {
+    WriteInterpreterDispatchCounters(isolate);
+  }
+
   delete counters_file_;
   delete counter_map_;
 #endif  // !V8_SHARED
 }
 
 
 
 static FILE* FOpen(const char* path, const char* mode) {
 #if defined(_MSC_VER) && (defined(_WIN32) || defined(_WIN64))
   FILE* result;
@@ skipping 1173 matching lines @@
 }
 
 }  // namespace v8
 
 
 #ifndef GOOGLE3
 int main(int argc, char* argv[]) {
   return v8::Shell::Main(argc, argv);
 }
 #endif