Fix deoptimization from %_MathPow. Do not prepare the stack for a C...

src/execution.cc

 // Copyright 2006-2008 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
@@ skipping 702 matching lines @@
   if (StackGuard::IsDebugBreak() || StackGuard::IsDebugCommand()) {
     DebugBreakHelper();
   }
 #endif
   if (StackGuard::IsPreempted()) RuntimePreempt();
   if (StackGuard::IsTerminateExecution()) {
     StackGuard::Continue(TERMINATE);
     return Top::TerminateExecution();
   }
   if (StackGuard::IsInterrupted()) {
-    // interrupt
     StackGuard::Continue(INTERRUPT);
     return Top::StackOverflow();
   }
   return Heap::undefined_value();
 }
 
 } }  // namespace v8::internal