- Use isolate where it is appropriate.

runtime/vm/assembler.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_ASSEMBLER_H_
 #define VM_ASSEMBLER_H_
 
 #include "platform/assert.h"
 #include "vm/allocation.h"
 #include "vm/globals.h"
@@ skipping 12 matching lines @@
 class Assembler;
 class AssemblerFixup;
 class AssemblerBuffer;
 class MemoryRegion;
 
 
 // External labels keep a function pointer to allow them
 // to be called from code generated by the assembler.
 class ExternalLabel : public ValueObject {
  public:
-  ExternalLabel(const char* name, uword address)
-      : name_(name), address_(address) {
-    ASSERT(name != NULL);
-  }
+  explicit ExternalLabel(uword address) : address_(address) {}
 
-  const char* name() const { return name_; }
   bool is_resolved() const { return address_ != 0; }
   uword address() const {
     ASSERT(is_resolved());
     return address_;
   }
 
  private:
-  const char* name_;
   const uword address_;
 };
 
 
 // Assembler fixups are positions in generated code that hold relocation
 // information that needs to be processed before finalizing the code
 // into executable memory.
 class AssemblerFixup : public ZoneAllocated {
  public:
   virtual void Process(const MemoryRegion& region, intptr_t position) = 0;
@@ skipping 164 matching lines @@
 #include "vm/assembler_arm.h"
 #elif defined(TARGET_ARCH_ARM64)
 #include "vm/assembler_arm64.h"
 #elif defined(TARGET_ARCH_MIPS)
 #include "vm/assembler_mips.h"
 #else
 #error Unknown architecture.
 #endif
 
 #endif  // VM_ASSEMBLER_H_