Factor out common code from platform-specific deoptimization. Fix Deoptimizer not to need to partit…

src/x64/deoptimizer-x64.cc

Index: src/x64/deoptimizer-x64.cc
diff --git a/src/x64/deoptimizer-x64.cc b/src/x64/deoptimizer-x64.cc
index d7a73d75c9d9dc49c5a574c46b5ab45fd7fa2aeb..722c0fab42531384bd1a26b1f804ab9d2def6658 100644
--- a/src/x64/deoptimizer-x64.cc
+++ b/src/x64/deoptimizer-x64.cc
@@ -46,21 +46,7 @@ int Deoptimizer::patch_size() {
 }
 
 
-void Deoptimizer::DeoptimizeFunctionWithPreparedFunctionList(
-    JSFunction* function) {
-  Isolate* isolate = function->GetIsolate();
-  HandleScope scope(isolate);
-  DisallowHeapAllocation nha;
-
-  ASSERT(function->IsOptimized());
-  ASSERT(function->FunctionsInFunctionListShareSameCode());
-
-  // Get the optimized code.
-  Code* code = function->code();
-
-  // The optimized code is going to be patched, so we cannot use it any more.
-  function->shared()->EvictFromOptimizedCodeMap(code, "deoptimized function");
-
+void Deoptimizer::PatchCodeForDeoptimization(Isolate* isolate, Code* code) {
   // Invalidate the relocation information, as it will become invalid by the
   // code patching below, and is not needed any more.
   code->InvalidateRelocation();
@@ -71,7 +57,7 @@ void Deoptimizer::DeoptimizeFunctionWithPreparedFunctionList(
   // before the safepoint table (space was allocated there when the Code
   // object was created, if necessary).
 
-  Address instruction_start = function->code()->instruction_start();
+  Address instruction_start = code->instruction_start();
 #ifdef DEBUG
   Address prev_call_address = NULL;
 #endif
@@ -93,25 +79,6 @@ void Deoptimizer::DeoptimizeFunctionWithPreparedFunctionList(
     prev_call_address = call_address;
 #endif
   }
-
-  // Add the deoptimizing code to the list.
-  DeoptimizingCodeListNode* node = new DeoptimizingCodeListNode(code);
-  DeoptimizerData* data = isolate->deoptimizer_data();
-  node->set_next(data->deoptimizing_code_list_);
-  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);
-
-  ReplaceCodeForRelatedFunctions(function, code);
-
-  if (FLAG_trace_deopt) {
-    PrintF("[forced deoptimization: ");
-    function->PrintName();
-    PrintF(" / %" V8PRIxPTR "]\n", reinterpret_cast<intptr_t>(function));
-  }
 }