Only reference constant root list entries in the snapshot.

src/x64/macro-assembler-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
@@ skipping 159 matching lines @@
                                      int fixed_offset) {
   DCHECK(root_array_available_);
   movp(destination,
        Operand(kRootRegister,
                variable_offset, times_pointer_size,
                (fixed_offset << kPointerSizeLog2) - kRootRegisterBias));
 }
 
 
 void MacroAssembler::StoreRoot(Register source, Heap::RootListIndex index) {
+  DCHECK(Heap::RootCanBeWrittenAfterInitialization(index));
   DCHECK(root_array_available_);
   movp(Operand(kRootRegister, (index << kPointerSizeLog2) - kRootRegisterBias),
        source);
 }
 
 
 void MacroAssembler::PushRoot(Heap::RootListIndex index) {
   DCHECK(root_array_available_);
   Push(Operand(kRootRegister, (index << kPointerSizeLog2) - kRootRegisterBias));
 }
@@ skipping 4897 matching lines @@
   if (mag.shift > 0) sarl(rdx, Immediate(mag.shift));
   movl(rax, dividend);
   shrl(rax, Immediate(31));
   addl(rdx, rax);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64