[cleanup] Remove parser_shell

It's old & not used recently & obsolete. It was mainly used for measuring the
effect of preparse data, which we no longer have.

BUG=v8:7570

Change-Id: Ic31958e736fbf9645e014f6ef61dd6cf72a42c76
Reviewed-on: https://chromium-review.googlesource.com/1032390Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52830}

BUILD.gn

@@ -3392,7 +3392,6 @@ group("gn_all") {
     ":d8",
     ":v8_fuzzers",
     ":v8_hello_world",
-    ":v8_parser_shell",
     ":v8_sample_process",
     "test:gn_all",
     "tools:gn_all",
@@ -3594,26 +3593,6 @@ v8_executable("v8_sample_process") {
   ]
 }
 
-v8_executable("v8_parser_shell") {
-  sources = [
-    "tools/parser-shell.cc",
-    "tools/shell-utils.h",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-
-  deps = [
-    ":v8",
-    ":v8_libbase",
-    ":v8_libplatform",
-    "//build/config:exe_and_shlib_deps",
-    "//build/win:default_exe_manifest",
-  ]
-}
-
 if (want_v8_shell) {
   v8_executable("v8_shell") {
     sources = [

tools/parser-shell.cc

-// Copyright 2014 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include <assert.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string>
-#include <vector>
-#include "src/v8.h"
-
-#include "include/libplatform/libplatform.h"
-#include "src/api.h"
-#include "src/compiler.h"
-#include "src/objects-inl.h"
-#include "src/parsing/parse-info.h"
-#include "src/parsing/parsing.h"
-#include "src/parsing/preparse-data.h"
-#include "src/parsing/preparser.h"
-#include "src/parsing/scanner-character-streams.h"
-#include "tools/shell-utils.h"
-
-using namespace v8::internal;
-
-class StringResource8 : public v8::String::ExternalOneByteStringResource {
- public:
-  StringResource8(const char* data, int length)
-      : data_(data), length_(length) { }
-  virtual size_t length() const { return length_; }
-  virtual const char* data() const { return data_; }
-
- private:
-  const char* data_;
-  int length_;
-};
-
-v8::base::TimeDelta RunBaselineParser(const char* fname, Encoding encoding,
-                                      int repeat, v8::Isolate* isolate,
-                                      v8::Local<v8::Context> context) {
-  int length = 0;
-  const byte* source = ReadFileAndRepeat(fname, &length, repeat);
-  v8::Local<v8::String> source_handle;
-  switch (encoding) {
-    case UTF8: {
-      source_handle = v8::String::NewFromUtf8(
-                          isolate, reinterpret_cast<const char*>(source),
-                          v8::NewStringType::kNormal).ToLocalChecked();
-      break;
-    }
-    case UTF16: {
-      source_handle =
-          v8::String::NewFromTwoByte(
-              isolate, reinterpret_cast<const uint16_t*>(source),
-              v8::NewStringType::kNormal, length / 2).ToLocalChecked();
-      break;
-    }
-    case LATIN1: {
-      StringResource8* string_resource =
-          new StringResource8(reinterpret_cast<const char*>(source), length);
-      source_handle = v8::String::NewExternalOneByte(isolate, string_resource)
-                          .ToLocalChecked();
-      break;
-    }
-  }
-  v8::base::TimeDelta parse_time1;
-  Handle<Script> script =
-      reinterpret_cast<i::Isolate*>(isolate)->factory()->NewScript(
-          v8::Utils::OpenHandle(*source_handle));
-  ParseInfo info(script);
-  v8::base::ElapsedTimer timer;
-  timer.Start();
-  bool success =
-      parsing::ParseProgram(&info, reinterpret_cast<i::Isolate*>(isolate));
-  parse_time1 = timer.Elapsed();
-  if (!success) {
-    fprintf(stderr, "Parsing failed\n");
-    return v8::base::TimeDelta();
-  }
-  return parse_time1;
-}
-
-
-int main(int argc, char* argv[]) {
-  v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
-  v8::V8::InitializeICUDefaultLocation(argv[0]);
-  std::unique_ptr<v8::Platform> platform = v8::platform::NewDefaultPlatform();
-  v8::V8::InitializePlatform(platform.get());
-  v8::V8::Initialize();
-  v8::V8::InitializeExternalStartupData(argv[0]);
-
-  Encoding encoding = LATIN1;
-  std::vector<std::string> fnames;
-  std::string benchmark;
-  int repeat = 1;
-  for (int i = 0; i < argc; ++i) {
-    if (strcmp(argv[i], "--latin1") == 0) {
-      encoding = LATIN1;
-    } else if (strcmp(argv[i], "--utf8") == 0) {
-      encoding = UTF8;
-    } else if (strcmp(argv[i], "--utf16") == 0) {
-      encoding = UTF16;
-    } else if (strncmp(argv[i], "--benchmark=", 12) == 0) {
-      benchmark = std::string(argv[i]).substr(12);
-    } else if (strncmp(argv[i], "--repeat=", 9) == 0) {
-      std::string repeat_str = std::string(argv[i]).substr(9);
-      repeat = atoi(repeat_str.c_str());
-    } else if (i > 0 && argv[i][0] != '-') {
-      fnames.push_back(std::string(argv[i]));
-    }
-  }
-  v8::Isolate::CreateParams create_params;
-  create_params.array_buffer_allocator =
-      v8::ArrayBuffer::Allocator::NewDefaultAllocator();
-  v8::Isolate* isolate = v8::Isolate::New(create_params);
-  {
-    v8::Isolate::Scope isolate_scope(isolate);
-    v8::HandleScope handle_scope(isolate);
-    v8::Local<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
-    v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global);
-    DCHECK(!context.IsEmpty());
-    {
-      v8::Context::Scope scope(context);
-      double first_parse_total = 0;
-      for (size_t i = 0; i < fnames.size(); i++) {
-        v8::base::TimeDelta time = RunBaselineParser(
-            fnames[i].c_str(), encoding, repeat, isolate, context);
-        first_parse_total += time.InMillisecondsF();
-      }
-      if (benchmark.empty()) benchmark = "Baseline";
-      printf("%s(ParseRunTime): %.f ms\n", benchmark.c_str(),
-             first_parse_total);
-    }
-  }
-  v8::V8::Dispose();
-  v8::V8::ShutdownPlatform();
-  delete create_params.array_buffer_allocator;
-  return 0;
-}