Clean up the x86 assembler API.

src/ia32/debug-ia32.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 139 matching lines @@
         __ SmiUntag(reg);
       }
     }
 
     // Get rid of the internal frame.
   }
 
   // If this call did not replace a call but patched other code then there will
   // be an unwanted return address left on the stack. Here we get rid of that.
   if (convert_call_to_jmp) {
-    __ add(Operand(esp), Immediate(kPointerSize));
+    __ add(esp, Immediate(kPointerSize));
   }
 
   // Now that the break point has been handled, resume normal execution by
   // jumping to the target address intended by the caller and that was
   // overwritten by the address of DebugBreakXXX.
   ExternalReference after_break_target =
       ExternalReference(Debug_Address::AfterBreakTarget(), masm->isolate());
   __ jmp(Operand::StaticVariable(after_break_target));
 }
 
@@ skipping 121 matching lines @@
 
   // Load context from the function.
   __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset));
 
   // Get function code.
   __ mov(edx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
   __ mov(edx, FieldOperand(edx, SharedFunctionInfo::kCodeOffset));
   __ lea(edx, FieldOperand(edx, Code::kHeaderSize));
 
   // Re-run JSFunction, edi is function, esi is context.
-  __ jmp(Operand(edx));
+  __ jmp(edx);
 }
 
 const bool Debug::kFrameDropperSupported = true;
 
 #undef __
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32