Extend JSBuiltinReducer to cover Math.fround as well.

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/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 305 matching lines @@
   virtual void Visit##type(type* node) OVERRIDE {               \
     HOptimizedGraphBuilder::Visit##type(node);                     \
   }
   MODULE_NODE_LIST(DEF_VISIT)
   DECLARATION_NODE_LIST(DEF_VISIT)
 #undef DEF_VISIT
 };
 
 
 OptimizedCompileJob::Status OptimizedCompileJob::CreateGraph() {
-  DCHECK(isolate()->use_crankshaft());
   DCHECK(info()->IsOptimizing());
   DCHECK(!info()->IsCompilingForDebugging());
 
   // We should never arrive here if optimization has been disabled on the
   // shared function info.
   DCHECK(!info()->shared_info()->optimization_disabled());
 
   // Do not use crankshaft if we need to be able to set break points.
   if (isolate()->DebuggerHasBreakPoints()) {
     return RetryOptimization(kDebuggerHasBreakPoints);
@@ skipping 1087 matching lines @@
   AllowHandleDereference allow_deref;
   bool tracing_on = info()->IsStub()
       ? FLAG_trace_hydrogen_stubs
       : (FLAG_trace_hydrogen &&
          info()->closure()->PassesFilter(FLAG_trace_hydrogen_filter));
   return (tracing_on &&
       base::OS::StrChr(const_cast<char*>(FLAG_trace_phase), name_[0]) != NULL);
 }
 
 } }  // namespace v8::internal