Change StoreIC interface on x64 to pass receiver in rdx, not on stack.

src/x64/ic-x64.cc

-// Copyright 2009 the V8 project authors. All rights reserved.
+// 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
 //       with the distribution.
@@ skipping 1311 matching lines @@
   Address offset_address =
       test_instruction_address + delta + kOffsetToLoadInstruction + 3;
   *reinterpret_cast<int*>(offset_address) = offset - kHeapObjectTag;
   return true;
 }
 
 void StoreIC::GenerateMiss(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- rax    : value
   //  -- rcx    : name
+  //  -- rdx    : receiver
   //  -- rsp[0] : return address
-  //  -- rsp[8] : receiver
   // -----------------------------------
 
   __ pop(rbx);
-  __ push(Operand(rsp, 0));  // receiver
+  __ push(rdx);  // receiver
   __ push(rcx);  // name
   __ push(rax);  // value
   __ push(rbx);  // return address
 
   // Perform tail call to the entry.
   __ TailCallRuntime(ExternalReference(IC_Utility(kStoreIC_Miss)), 3, 1);
 }
 
 void StoreIC::GenerateExtendStorage(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- rax    : value
   //  -- rcx    : Map (target of map transition)
+  //  -- rdx    : receiver
   //  -- rsp[0] : return address
-  //  -- rsp[8] : receiver
   // -----------------------------------
 
   __ pop(rbx);
-  __ push(Operand(rsp, 0));  // receiver
+  __ push(rdx);  // receiver
   __ push(rcx);  // transition map
   __ push(rax);  // value
   __ push(rbx);  // return address
 
   // Perform tail call to the entry.
   __ TailCallRuntime(
       ExternalReference(IC_Utility(kSharedStoreIC_ExtendStorage)), 3, 1);
 }
 
 void StoreIC::GenerateMegamorphic(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- rax    : value
   //  -- rcx    : name
+  //  -- rdx    : receiver
   //  -- rsp[0] : return address
-  //  -- rsp[8] : receiver
   // -----------------------------------
 
   // Get the receiver from the stack and probe the stub cache.
-  __ movq(rdx, Operand(rsp, kPointerSize));
   Code::Flags flags = Code::ComputeFlags(Code::STORE_IC,
                                          NOT_IN_LOOP,
                                          MONOMORPHIC);
   StubCache::GenerateProbe(masm, flags, rdx, rcx, rbx, no_reg);
 
   // Cache miss: Jump to runtime.
   GenerateMiss(masm);
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal