Cosmetic changes ("set up" is a verb, "setup" is a noun).

src/x64/stub-cache-x64.cc

 // Copyright 2012 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 2163 matching lines @@
   const int argc = arguments().immediate();
   GenerateGlobalReceiverCheck(object, holder, name, &miss);
   GenerateLoadFunctionFromCell(cell, function, &miss);
 
   // Patch the receiver on the stack with the global proxy.
   if (object->IsGlobalObject()) {
     __ movq(rdx, FieldOperand(rdx, GlobalObject::kGlobalReceiverOffset));
     __ movq(Operand(rsp, (argc + 1) * kPointerSize), rdx);
   }
 
-  // Setup the context (function already in rdi).
+  // Set up the context (function already in rdi).
   __ movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
 
   // Jump to the cached code (tail call).
   Counters* counters = isolate()->counters();
   __ IncrementCounter(counters->call_global_inline(), 1);
   ParameterCount expected(function->shared()->formal_parameter_count());
   CallKind call_kind = CallICBase::Contextual::decode(extra_state_)
       ? CALL_AS_FUNCTION
       : CALL_AS_METHOD;
   // We call indirectly through the code field in the function to
@@ skipping 1391 matching lines @@
   Handle<Code> ic_miss = masm->isolate()->builtins()->KeyedStoreIC_Miss();
   __ jmp(ic_miss, RelocInfo::CODE_TARGET);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64