Add a deoptimization count to each function to limit number of re-compilations.

src/arm/deoptimizer-arm.cc

 // Copyright 2011 the V8 project authors. All rights reserved.

[Jakob Kummerow, 2012/01/16 11:41:25]

nit: 2012

[fschneider, 2012/01/19 10:26:11]

Done.

 // 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
 //       with the distribution.
@@ skipping 81 matching lines @@
   data->deoptimizing_code_list_ = node;
 
   // We might be in the middle of incremental marking with compaction.
   // Tell collector to treat this code object in a special way and
   // ignore all slots that might have been recorded on it.
   isolate->heap()->mark_compact_collector()->InvalidateCode(code);
 
   // Set the code for the function to non-optimized version.
   function->ReplaceCode(function->shared()->code());
 
+  function->shared()->IncrementAndCheckDeoptCount();
+
   if (FLAG_trace_deopt) {
     PrintF("[forced deoptimization: ");
     function->PrintName();
     PrintF(" / %x]\n", reinterpret_cast<uint32_t>(function));
   }
 }
 
 
 void Deoptimizer::PatchStackCheckCodeAt(Code* unoptimized_code,
                                         Address pc_after,
@@ skipping 637 matching lines @@
     __ push(ip);
     __ b(&done);
     ASSERT(masm()->pc_offset() - start == table_entry_size_);
   }
   __ bind(&done);
 }
 
 #undef __
 
 } }  // namespace v8::internal