Decouple CpuFeatures from serializer state.

src/arm64/macro-assembler-arm64.cc

Index: src/arm64/macro-assembler-arm64.cc
diff --git a/src/arm64/macro-assembler-arm64.cc b/src/arm64/macro-assembler-arm64.cc
index 73126e6d046afe4d3b9129b9bc75a79a3731a5f8..d961713924ee3248a375c2b75cef8f97f061abcf 100644
--- a/src/arm64/macro-assembler-arm64.cc
+++ b/src/arm64/macro-assembler-arm64.cc
@@ -56,7 +56,7 @@ void MacroAssembler::LogicalMacro(const Register& rd,
                                   LogicalOp op) {
   UseScratchRegisterScope temps(this);
 
-  if (operand.NeedsRelocation(isolate())) {
+  if (operand.NeedsRelocation(this)) {
     Register temp = temps.AcquireX();
     LoadRelocated(temp, operand);
     Logical(rd, rn, temp, op);
@@ -249,7 +249,7 @@ void MacroAssembler::Mov(const Register& rd,
   UseScratchRegisterScope temps(this);
   Register dst = (rd.IsSP()) ? temps.AcquireSameSizeAs(rd) : rd;
 
-  if (operand.NeedsRelocation(isolate())) {
+  if (operand.NeedsRelocation(this)) {
     LoadRelocated(dst, operand);
 
   } else if (operand.IsImmediate()) {
@@ -297,7 +297,7 @@ void MacroAssembler::Mov(const Register& rd,
 void MacroAssembler::Mvn(const Register& rd, const Operand& operand) {
   ASSERT(allow_macro_instructions_);
 
-  if (operand.NeedsRelocation(isolate())) {
+  if (operand.NeedsRelocation(this)) {
     LoadRelocated(rd, operand);
     mvn(rd, rd);
 
@@ -352,7 +352,7 @@ void MacroAssembler::ConditionalCompareMacro(const Register& rn,
                                              Condition cond,
                                              ConditionalCompareOp op) {
   ASSERT((cond != al) && (cond != nv));
-  if (operand.NeedsRelocation(isolate())) {
+  if (operand.NeedsRelocation(this)) {
     UseScratchRegisterScope temps(this);
     Register temp = temps.AcquireX();
     LoadRelocated(temp, operand);
@@ -418,12 +418,12 @@ void MacroAssembler::AddSubMacro(const Register& rd,
                                  FlagsUpdate S,
                                  AddSubOp op) {
   if (operand.IsZero() && rd.Is(rn) && rd.Is64Bits() && rn.Is64Bits() &&
-      !operand.NeedsRelocation(isolate()) && (S == LeaveFlags)) {
+      !operand.NeedsRelocation(this) && (S == LeaveFlags)) {
     // The instruction would be a nop. Avoid generating useless code.
     return;
   }
 
-  if (operand.NeedsRelocation(isolate())) {
+  if (operand.NeedsRelocation(this)) {
     UseScratchRegisterScope temps(this);
     Register temp = temps.AcquireX();
     LoadRelocated(temp, operand);
@@ -449,7 +449,7 @@ void MacroAssembler::AddSubWithCarryMacro(const Register& rd,
   ASSERT(rd.SizeInBits() == rn.SizeInBits());
   UseScratchRegisterScope temps(this);
 
-  if (operand.NeedsRelocation(isolate())) {
+  if (operand.NeedsRelocation(this)) {
     Register temp = temps.AcquireX();
     LoadRelocated(temp, operand);
     AddSubWithCarryMacro(rd, rn, temp, S, op);