Update V8 to r6101 as required by WebKit r74534

Change-Id: I7f84af8dd732f11898fd644b2c2b1538914cb78d

2 files changed, 94 insertions, 5 deletions

diff --git a/samples/samples.gyp b/samples/samples.gyp
new file mode 100644
index 00000000..f383ee20
--- /dev/null
+++ b/samples/samples.gyp
@@ -0,0 +1,51 @@
+# Copyright 2010 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.
+
+{
+  'targets': [
+    {
+      'target_name': 'shell',
+      'type': 'executable',
+      'dependencies': [
+        '../tools/gyp/v8.gyp:v8',
+      ],
+      'sources': [
+        'shell.cc',
+      ],
+    },
+    {
+      'target_name': 'process',
+      'type': 'executable',
+      'dependencies': [
+        '../tools/gyp/v8.gyp:v8',
+      ],
+      'sources': [
+        'process.cc',
+      ],
+    }
+  ],
+}
diff --git a/samples/shell.cc b/samples/shell.cc
index 1a13f5f8..6b67df6c 100644
--- a/samples/shell.cc
+++ b/samples/shell.cc
@@ -26,6 +26,7 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <v8.h>
+#include <v8-testing.h>
 #include <fcntl.h>
 #include <string.h>
 #include <stdio.h>
@@ -47,7 +48,6 @@ void ReportException(v8::TryCatch* handler);
 
 
 int RunMain(int argc, char* argv[]) {
-  v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
   v8::HandleScope handle_scope;
   // Create a template for the global object.
   v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New();
@@ -63,11 +63,11 @@ int RunMain(int argc, char* argv[]) {
   global->Set(v8::String::New("version"), v8::FunctionTemplate::New(Version));
   // Create a new execution environment containing the built-in
   // functions
-  v8::Handle<v8::Context> context = v8::Context::New(NULL, global);
-  // Enter the newly created execution environment.
-  v8::Context::Scope context_scope(context);
+  v8::Persistent<v8::Context> context = v8::Context::New(NULL, global);
   bool run_shell = (argc == 1);
   for (int i = 1; i < argc; i++) {
+    // Enter the execution environment before evaluating any code.
+    v8::Context::Scope context_scope(context);
     const char* str = argv[i];
     if (strcmp(str, "--shell") == 0) {
       run_shell = true;
@@ -99,12 +99,48 @@ int RunMain(int argc, char* argv[]) {
     }
   }
   if (run_shell) RunShell(context);
+  context.Dispose();
   return 0;
 }
 
 
 int main(int argc, char* argv[]) {
-  int result = RunMain(argc, argv);
+  // Figure out if we're requested to stress the optimization
+  // infrastructure by running tests multiple times and forcing
+  // optimization in the last run.
+  bool FLAG_stress_opt = false;
+  bool FLAG_stress_deopt = false;
+  for (int i = 0; i < argc; i++) {
+    if (strcmp(argv[i], "--stress-opt") == 0) {
+      FLAG_stress_opt = true;
+      argv[i] = NULL;
+    } else if (strcmp(argv[i], "--stress-deopt") == 0) {
+      FLAG_stress_deopt = true;
+      argv[i] = NULL;
+    } else if (strcmp(argv[i], "--noalways-opt") == 0) {
+      // No support for stressing if we can't use --always-opt.
+      FLAG_stress_opt = false;
+      FLAG_stress_deopt = false;
+      break;
+    }
+  }
+
+  v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
+  int result = 0;
+  if (FLAG_stress_opt || FLAG_stress_deopt) {
+    v8::Testing::SetStressRunType(FLAG_stress_opt
+                                  ? v8::Testing::kStressTypeOpt
+                                  : v8::Testing::kStressTypeDeopt);
+    int stress_runs = v8::Testing::GetStressRuns();
+    for (int i = 0; i < stress_runs && result == 0; i++) {
+      printf("============ Stress %d/%d ============\n",
+             i + 1, stress_runs);
+      v8::Testing::PrepareStressRun(i);
+      result = RunMain(argc, argv);
+    }
+  } else {
+    result = RunMain(argc, argv);
+  }
   v8::V8::Dispose();
   return result;
 }
@@ -221,6 +257,8 @@ v8::Handle<v8::String> ReadFile(const char* name) {
 void RunShell(v8::Handle<v8::Context> context) {
   printf("V8 version %s\n", v8::V8::GetVersion());
   static const int kBufferSize = 256;
+  // Enter the execution environment before evaluating any code.
+  v8::Context::Scope context_scope(context);
   while (true) {
     char buffer[kBufferSize];
     printf("> ");