Simplify UnaryOpStub a little bit.

src/arm/code-stubs-arm.cc

 // Copyright 2011 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 1713 matching lines @@
       GenerateHeapNumberStub(masm);
       break;
     case UnaryOpIC::GENERIC:
       GenerateGenericStub(masm);
       break;
   }
 }
 
 
 void UnaryOpStub::GenerateTypeTransition(MacroAssembler* masm) {
-  // Prepare to push argument.
-  __ mov(r3, Operand(r0));
-
-  // Push this stub's key. Although the operation and the type info are
-  // encoded into the key, the encoding is opaque, so push them too.
-  __ mov(r2, Operand(Smi::FromInt(MinorKey())));
-  __ mov(r1, Operand(Smi::FromInt(op_)));
+  __ mov(r3, Operand(r0));  // the operand
+  __ mov(r2, Operand(Smi::FromInt(op_)));
+  __ mov(r1, Operand(Smi::FromInt(mode_)));
   __ mov(r0, Operand(Smi::FromInt(operand_type_)));
-
   __ Push(r3, r2, r1, r0);
 
   __ TailCallExternalReference(
-      ExternalReference(IC_Utility(IC::kUnaryOp_Patch),
-                        masm->isolate()),
-      4,
-      1);
+      ExternalReference(IC_Utility(IC::kUnaryOp_Patch), masm->isolate()), 4, 1);
 }
 
 
 // TODO(svenpanne): Use virtual functions instead of switch.
 void UnaryOpStub::GenerateSmiStub(MacroAssembler* masm) {
   switch (op_) {
     case Token::SUB:
       GenerateSmiStubSub(masm);
       break;
     case Token::BIT_NOT:
@@ skipping 4842 matching lines @@
   __ mov(result, Operand(0));
   __ Ret();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM