Move stack check patching to the architecture dependent deoptimizer

src/runtime-profiler.cc

 // Copyright 2010 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 175 matching lines @@
   }
 
   // Get the stack check stub code object to match against.  We aren't
   // prepared to generate it, but we don't expect to have to.
   StackCheckStub check_stub;
   Object* check_code;
   MaybeObject* maybe_check_code = check_stub.TryGetCode();
   if (maybe_check_code->ToObject(&check_code)) {
     Code* replacement_code = Builtins::builtin(Builtins::OnStackReplacement);
     Code* unoptimized_code = shared->code();
-    // Iterate the unoptimized code and patch every stack check except at
-    // the function entry.  This code assumes the function entry stack
-    // check appears first i.e., is not deferred or otherwise reordered.
-    bool first = true;
-    for (RelocIterator it(unoptimized_code, RelocInfo::kCodeTargetMask);
-         !it.done();
-         it.next()) {
-      RelocInfo* rinfo = it.rinfo();
-      if (rinfo->target_address() == Code::cast(check_code)->entry()) {
-        if (first) {
-          first = false;
-        } else {
-          Deoptimizer::PatchStackCheckCode(rinfo, replacement_code);
-        }
-      }
-    }
+    Deoptimizer::PatchStackCheckCode(unoptimized_code,
+                                     Code::cast(check_code),
+                                     replacement_code);
   }
 }
 
 
 static void ClearSampleBuffer() {
   for (int i = 0; i < kSamplerWindowSize; i++) {
     sampler_window[i] = NULL;
     sampler_window_weight[i] = 0;
   }
 }
@@ skipping 230 matching lines @@
         if (Top::WaitForJSState()) return true;
       }
     }
   }
 #endif
   return false;
 }
 
 
 } }  // namespace v8::internal