A64: Synchronize with r16679.

src/x64/regexp-macro-assembler-x64.cc

Index: src/x64/regexp-macro-assembler-x64.cc
diff --git a/src/x64/regexp-macro-assembler-x64.cc b/src/x64/regexp-macro-assembler-x64.cc
index 49d9de65ab96229088b88b0c3e919631f3351283..ca834e2771f5079f3dc1dbe4071838f72cc52089 100644
--- a/src/x64/regexp-macro-assembler-x64.cc
+++ b/src/x64/regexp-macro-assembler-x64.cc
@@ -998,7 +998,7 @@ Handle<HeapObject> RegExpMacroAssemblerX64::GetCode(Handle<String> source) {
 
   CodeDesc code_desc;
   masm_.GetCode(&code_desc);
-  Isolate* isolate = ISOLATE;
+  Isolate* isolate = this->isolate();
   Handle<Code> code = isolate->factory()->NewCode(
       code_desc, Code::ComputeFlags(Code::REGEXP),
       masm_.CodeObject());
@@ -1188,7 +1188,6 @@ int RegExpMacroAssemblerX64::CheckStackGuardState(Address* return_address,
                                                   Code* re_code,
                                                   Address re_frame) {
   Isolate* isolate = frame_entry<Isolate*>(re_frame, kIsolate);
-  ASSERT(isolate == Isolate::Current());
   if (isolate->stack_guard()->IsStackOverflow()) {
     isolate->StackOverflow();
     return EXCEPTION;