Pretenure call new support.

src/a64/full-codegen-a64.cc

 // Copyright 2013 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 2590 matching lines @@
   SetSourcePosition(expr->position());
 
   // Load function and argument count into x1 and x0.
   __ Mov(x0, arg_count);
   __ Peek(x1, arg_count * kXRegSize);
 
   // Record call targets in unoptimized code.
   Handle<Object> uninitialized =
       TypeFeedbackInfo::UninitializedSentinel(isolate());
   StoreFeedbackVectorSlot(expr->CallNewFeedbackSlot(), uninitialized);
+  if (FLAG_pretenuring_call_new) {
+    StoreFeedbackVectorSlot(expr->AllocationSiteFeedbackSlot(),
+                            isolate()->factory()->NewAllocationSite());
+    ASSERT(expr->AllocationSiteFeedbackSlot() ==
+           expr->CallNewFeedbackSlot() + 1);
+  }
+
   __ LoadObject(x2, FeedbackVector());
   __ Mov(x3, Operand(Smi::FromInt(expr->CallNewFeedbackSlot())));
 
   CallConstructStub stub(RECORD_CALL_TARGET);
   __ Call(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL);
   PrepareForBailoutForId(expr->ReturnId(), TOS_REG);
   context()->Plug(x0);
 }
 
 
@@ skipping 2345 matching lines @@
   return previous_;
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_A64