Simple register allocation for ARM. Only top of expression...

src/codegen.h

 // Copyright 2006-2008 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 211 matching lines @@
   // This flag is ored with a valid offset from the frame pointer, so
   // it should fit in the low zero bits of a valid offset.
   static const int kSyncedFlag = 2;
 
   int statement_position_;
   int position_;
 
   Label entry_label_;
   Label exit_label_;
 
-  int registers_[RegisterAllocator::kNumRegisters];
+  // C++ doesn't allow zero length arrays, so we make the array length 1 even
+  // if we don't need it.
+  static const int kRegistersArrayLength =
+      (RegisterAllocator::kNumRegisters == 0) ?
+          1 : RegisterAllocator::kNumRegisters;
+  int registers_[kRegistersArrayLength];
 
 #ifdef DEBUG
   const char* comment_;
 #endif
   DISALLOW_COPY_AND_ASSIGN(DeferredCode);
 };
 
 class StackCheckStub : public CodeStub {
  public:
   StackCheckStub() { }
@@ skipping 356 matching lines @@
  private:
   Major MajorKey() { return ToBoolean; }
   int MinorKey() { return 0; }
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODEGEN_H_