- Pass the knowledge whether the old GC is compacting to the GC prologue and ...

src/macro-assembler-arm.cc

 // Copyright 2006-2008 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 25 matching lines @@
 
 // Give alias names to registers
 Register cp = {  8 };  // JavaScript context pointer
 Register pp = { 10 };  // parameter pointer
 
 
 MacroAssembler::MacroAssembler(void* buffer, int size)
     : Assembler(buffer, size),
       unresolved_(0),
       generating_stub_(false),
-      allow_stub_calls_(true) {
+      allow_stub_calls_(true),
+      code_object_(Heap::undefined_value()) {
 }
 
 
 // We always generate arm code, never thumb code, even if V8 is compiled to
 // thumb, so we require inter-working support
 #if defined(__thumb__) && !defined(__THUMB_INTERWORK__)
 #error "flag -mthumb-interwork missing"
 #endif
 
 
@@ skipping 206 matching lines @@
 
   bind(&done);
 }
 
 
 void MacroAssembler::EnterFrame(StackFrame::Type type) {
   // r0-r3: preserved
   stm(db_w, sp, cp.bit() | fp.bit() | lr.bit());
   mov(ip, Operand(Smi::FromInt(type)));
   push(ip);
-  mov(ip, Operand(0));
-  push(ip);  // Push an empty code cache slot.
+  mov(ip, Operand(CodeObject()));
+  push(ip);
   add(fp, sp, Operand(3 * kPointerSize));  // Adjust FP to point to saved FP.
 }
 
 
 void MacroAssembler::LeaveFrame(StackFrame::Type type) {
   // r0: preserved
   // r1: preserved
   // r2: preserved
 
   // Drop the execution stack down to the frame pointer and restore
@@ skipping 641 matching lines @@
 #endif
   mov(r0, Operand(p0));
   push(r0);
   mov(r0, Operand(Smi::FromInt(p1 - p0)));
   push(r0);
   CallRuntime(Runtime::kAbort, 2);
   // will not return here
 }
 
 } }  // namespace v8::internal