Don't perform OSR on intrinsified methods.

runtime/vm/code_generator.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/code_generator.h"
 
 #include "vm/assembler.h"
 #include "vm/ast.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
@@ skipping 1191 matching lines @@
     DartFrameIterator iterator;
     StackFrame* frame = iterator.NextFrame();
     ASSERT(frame != NULL);
     const Code& code = Code::ZoneHandle(frame->LookupDartCode());
     ASSERT(!code.IsNull());
     const Function& function = Function::Handle(code.function());
     ASSERT(!function.IsNull());
     // Since the code is referenced from the frame and the ZoneHandle,
     // it cannot have been removed from the function.
     ASSERT(function.HasCode());
-    if (!CanOptimizeFunction(function, isolate)) {
+    // Don't do OSR on intrinsified functions: The intrinsic code expects to be
+    // called like a regular function and can't be entered via OSR.
+    if (!CanOptimizeFunction(function, isolate) || function.is_intrinsic()) {
       return;
     }
     intptr_t osr_id =
         Code::Handle(function.unoptimized_code()).GetDeoptIdForOsr(frame->pc());
     if (FLAG_trace_osr) {
       OS::Print("Attempting OSR for %s at id=%" Pd ", count=%" Pd "\n",
                 function.ToFullyQualifiedCString(),
                 osr_id,
                 function.usage_counter());
     }
@@ skipping 401 matching lines @@
   field.RecordStore(value);
 }
 
 
 DEFINE_RUNTIME_ENTRY(InitStaticField, 1) {
   const Field& field = Field::CheckedHandle(arguments.ArgAt(0));
   field.EvaluateInitializer();
 }
 
 }  // namespace dart