Generate a custom OSR entrypoint for OSR compiles on all platforms, and transition to optimized cod…

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 1fdd478b7f9f55f9a237afbb2d605b706464eead..f9002d73eb8f5ee1967ca09bcc1627e2e8be52d1 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -9464,11 +9464,24 @@ bool JSFunction::CompileLazy(Handle<JSFunction> function,
 }
 
 
-bool JSFunction::CompileOptimized(Handle<JSFunction> function,
+Handle<Code> JSFunction::CompileOsr(Handle<JSFunction> function,
                                   BailoutId osr_ast_id,
                                   ClearExceptionFlag flag) {
   CompilationInfoWithZone info(function);
   info.SetOptimizing(osr_ast_id);
+  if (CompileLazyHelper(&info, flag)) {
+    ASSERT(function->code() != *info.code());
+    return info.code();
+  } else {
+    return Handle<Code>::null();
+  }
+}
+
+
+bool JSFunction::CompileOptimized(Handle<JSFunction> function,
+                                  ClearExceptionFlag flag) {
+  CompilationInfoWithZone info(function);
+  info.SetOptimizing(BailoutId::None());
   return CompileLazyHelper(&info, flag);
 }