--- a/hotspot/src/share/vm/opto/runtime.cpp	Tue Sep 15 12:59:51 2015 +0000
+++ b/hotspot/src/share/vm/opto/runtime.cpp	Tue Sep 15 11:04:11 2015 -0700
@@ -102,11 +102,6 @@
 address OptoRuntime::_slow_arraycopy_Java                         = NULL;
 address OptoRuntime::_register_finalizer_Java                     = NULL;
 
-# ifdef ENABLE_ZAP_DEAD_LOCALS
-address OptoRuntime::_zap_dead_Java_locals_Java                   = NULL;
-address OptoRuntime::_zap_dead_native_locals_Java                 = NULL;
-# endif
-
 ExceptionBlob* OptoRuntime::_exception_blob;
 
 // This should be called in an assertion at the start of OptoRuntime routines
@@ -152,10 +147,6 @@
   gen(env, _slow_arraycopy_Java            , slow_arraycopy_Type          , SharedRuntime::slow_arraycopy_C ,    0 , false, false, false);
   gen(env, _register_finalizer_Java        , register_finalizer_Type      , register_finalizer              ,    0 , false, false, false);
 
-# ifdef ENABLE_ZAP_DEAD_LOCALS
-  gen(env, _zap_dead_Java_locals_Java      , zap_dead_locals_Type         , zap_dead_Java_locals_C          ,    0 , false, true , false );
-  gen(env, _zap_dead_native_locals_Java    , zap_dead_locals_Type         , zap_dead_native_locals_C        ,    0 , false, true , false );
-# endif
   return true;
 }
 
@@ -604,23 +595,6 @@
   return TypeFunc::make(domain, range);
 }
 
-# ifdef ENABLE_ZAP_DEAD_LOCALS
-// Type used for stub generation for zap_dead_locals.
-// No inputs or outputs
-const TypeFunc *OptoRuntime::zap_dead_locals_Type() {
-  // create input type (domain)
-  const Type **fields = TypeTuple::fields(0);
-  const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields);
-
-  // create result type (range)
-  fields = TypeTuple::fields(0);
-  const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields);
-
-  return TypeFunc::make(domain,range);
-}
-# endif
-
-
 //-----------------------------------------------------------------------------
 // Monitor Handling
 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() {
@@ -1648,67 +1622,3 @@
 
 #endif  // PRODUCT
 
-
-# ifdef ENABLE_ZAP_DEAD_LOCALS
-// Called from call sites in compiled code with oop maps (actually safepoints)
-// Zaps dead locals in first java frame.
-// Is entry because may need to lock to generate oop maps
-// Currently, only used for compiler frames, but someday may be used
-// for interpreter frames, too.
-
-int OptoRuntime::ZapDeadCompiledLocals_count = 0;
-
-// avoid pointers to member funcs with these helpers
-static bool is_java_frame(  frame* f) { return f->is_java_frame();   }
-static bool is_native_frame(frame* f) { return f->is_native_frame(); }
-
-
-void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
-                                                bool (*is_this_the_right_frame_to_zap)(frame*)) {
-  assert(JavaThread::current() == thread, "is this needed?");
-
-  if ( !ZapDeadCompiledLocals )  return;
-
-  bool skip = false;
-
-       if ( ZapDeadCompiledLocalsFirst  ==  0  ) ; // nothing special
-  else if ( ZapDeadCompiledLocalsFirst  >  ZapDeadCompiledLocals_count )  skip = true;
-  else if ( ZapDeadCompiledLocalsFirst  == ZapDeadCompiledLocals_count )
-    warning("starting zapping after skipping");
-
-       if ( ZapDeadCompiledLocalsLast  ==  -1  ) ; // nothing special
-  else if ( ZapDeadCompiledLocalsLast  <   ZapDeadCompiledLocals_count )  skip = true;
-  else if ( ZapDeadCompiledLocalsLast  ==  ZapDeadCompiledLocals_count )
-    warning("about to zap last zap");
-
-  ++ZapDeadCompiledLocals_count; // counts skipped zaps, too
-
-  if ( skip )  return;
-
-  // find java frame and zap it
-
-  for (StackFrameStream sfs(thread);  !sfs.is_done();  sfs.next()) {
-    if (is_this_the_right_frame_to_zap(sfs.current()) ) {
-      sfs.current()->zap_dead_locals(thread, sfs.register_map());
-      return;
-    }
-  }
-  warning("no frame found to zap in zap_dead_Java_locals_C");
-}
-
-JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
-  zap_dead_java_or_native_locals(thread, is_java_frame);
-JRT_END
-
-// The following does not work because for one thing, the
-// thread state is wrong; it expects java, but it is native.
-// Also, the invariants in a native stub are different and
-// I'm not sure it is safe to have a MachCalRuntimeDirectNode
-// in there.
-// So for now, we do not zap in native stubs.
-
-JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
-  zap_dead_java_or_native_locals(thread, is_native_frame);
-JRT_END
-
-# endif