[turbofan] Only compile hot asm functions with TurboFan if --turbo-osr flag is turned on.

src/compiler.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.
 
 #include "src/v8.h"
 
 #include "src/compiler.h"
 
 #include "src/ast-numbering.h"
 #include "src/bootstrapper.h"
@@ skipping 483 matching lines @@
   // Check the whitelist for TurboFan.
   if ((FLAG_turbo_asm && info()->shared_info()->asm_function()) ||
       info()->closure()->PassesFilter(FLAG_turbo_filter)) {
     if (FLAG_trace_opt) {
       OFStream os(stdout);
       os << "[compiling method " << Brief(*info()->closure())
          << " using TurboFan";
       if (info()->is_osr()) os << " OSR";
       os << "]" << std::endl;
     }
+
+    if (info()->shared_info()->asm_function()) {
+      info()->MarkAsContextSpecializing();
+    }
+
     Timer t(this, &time_taken_to_create_graph_);
     compiler::Pipeline pipeline(info());
     pipeline.GenerateCode();
     if (!info()->code().is_null()) {
       return SetLastStatus(SUCCEEDED);
     }
   }
 
   if (FLAG_trace_opt) {
     OFStream os(stdout);
@@ skipping 409 matching lines @@
 
 
 MaybeHandle<Code> Compiler::GetLazyCode(Handle<JSFunction> function) {
   Isolate* isolate = function->GetIsolate();
   DCHECK(!isolate->has_pending_exception());
   DCHECK(!function->is_compiled());
   AggregatedHistogramTimerScope timer(isolate->counters()->compile_lazy());
   // If the debugger is active, do not compile with turbofan unless we can
   // deopt from turbofan code.
   if (FLAG_turbo_asm && function->shared()->asm_function() &&
-      (FLAG_turbo_deoptimization || !isolate->debug()->is_active())) {
+      (FLAG_turbo_deoptimization || !isolate->debug()->is_active()) &&
+      !FLAG_turbo_osr) {
     CompilationInfoWithZone info(function);
 
     VMState<COMPILER> state(isolate);
     PostponeInterruptsScope postpone(isolate);
 
     info.SetOptimizing(BailoutId::None(), handle(function->shared()->code()));
     info.MarkAsContextSpecializing();
 
     if (GetOptimizedCodeNow(&info)) {
       DCHECK(function->shared()->is_compiled());
@@ skipping 656 matching lines @@
 }
 
 
 #if DEBUG
 void CompilationInfo::PrintAstForTesting() {
   PrintF("--- Source from AST ---\n%s\n",
          PrettyPrinter(isolate(), zone()).PrintProgram(function()));
 }
 #endif
 } }  // namespace v8::internal