Fix some out-of-line constant pool garbage collection bugs.

src/arm/lithium-codegen-arm.cc

 // Copyright 2012 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 961 matching lines @@
   Safepoint safepoint = safepoints_.DefineSafepoint(masm(),
       kind, arguments, deopt_mode);
   for (int i = 0; i < operands->length(); i++) {
     LOperand* pointer = operands->at(i);
     if (pointer->IsStackSlot()) {
       safepoint.DefinePointerSlot(pointer->index(), zone());
     } else if (pointer->IsRegister() && (kind & Safepoint::kWithRegisters)) {
       safepoint.DefinePointerRegister(ToRegister(pointer), zone());
     }
   }
+  if (FLAG_enable_ool_constant_pool && (kind & Safepoint::kWithRegisters)) {
+    // Register pp always contains a pointer to the constant pool.
+    safepoint.DefinePointerRegister(pp, zone());
+  }
 }
 
 
 void LCodeGen::RecordSafepoint(LPointerMap* pointers,
                                Safepoint::DeoptMode deopt_mode) {
   RecordSafepoint(pointers, Safepoint::kSimple, 0, deopt_mode);
 }
 
 
 void LCodeGen::RecordSafepoint(Safepoint::DeoptMode deopt_mode) {
@@ skipping 4816 matching lines @@
   __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index));
   __ ldr(result, FieldMemOperand(scratch,
                                  FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal