Desugar bitwise negation into XOR and kill all UnaryOp stuff.

src/mips/assembler-mips.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 340 matching lines @@
   INLINE(explicit Operand(Context** cpp));
   explicit Operand(Handle<Object> handle);
   INLINE(explicit Operand(Smi* value));
 
   // Register.
   INLINE(explicit Operand(Register rm));
 
   // Return true if this is a register operand.
   INLINE(bool is_reg() const);
 
+  inline int32_t immediate() const {
+    ASSERT(!is_reg());
+    return imm32_;
+  }
+
   Register rm() const { return rm_; }
 
  private:
   Register rm_;
   int32_t imm32_;  // Valid if rm_ == no_reg.
   RelocInfo::Mode rmode_;
 
   friend class Assembler;
   friend class MacroAssembler;
 };
@@ skipping 834 matching lines @@
 class EnsureSpace BASE_EMBEDDED {
  public:
   explicit EnsureSpace(Assembler* assembler) {
     assembler->CheckBuffer();
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_ASSEMBLER_MIPS_H_