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

src/x64/builtins-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 319 matching lines @@
     // Retrieve smi-tagged arguments count from the stack.
     __ movq(rax, Operand(rsp, 0));
     __ SmiToInteger32(rax, rax);
 
     // Push the allocated receiver to the stack. We need two copies
     // because we may have to return the original one and the calling
     // conventions dictate that the called function pops the receiver.
     __ push(rbx);
     __ push(rbx);
 
-    // Setup pointer to last argument.
+    // Set up pointer to last argument.
     __ lea(rbx, Operand(rbp, StandardFrameConstants::kCallerSPOffset));
 
     // Copy arguments and receiver to the expression stack.
     Label loop, entry;
     __ movq(rcx, rax);
     __ jmp(&entry);
     __ bind(&loop);
     __ push(Operand(rbx, rcx, times_pointer_size, 0));
     __ bind(&entry);
     __ decq(rcx);
@@ skipping 840 matching lines @@
 //   rax: argc
 //   rsp[0]: return address
 //   rsp[8]: last argument
 // This function is used for both construct and normal calls of Array. The only
 // difference between handling a construct call and a normal call is that for a
 // construct call the constructor function in rdi needs to be preserved for
 // entering the generic code. In both cases argc in rax needs to be preserved.
 // Both registers are preserved by this code so no need to differentiate between
 // a construct call and a normal call.
 static void ArrayNativeCode(MacroAssembler* masm,
-                            Label *call_generic_code) {
+                            Label* call_generic_code) {
   Label argc_one_or_more, argc_two_or_more, empty_array, not_empty_array,
       has_non_smi_element;
 
   // Check for array construction with zero arguments.
   __ testq(rax, rax);
   __ j(not_zero, &argc_one_or_more);
 
   __ bind(&empty_array);
   // Handle construction of an empty array.
   AllocateEmptyJSArray(masm,
@@ skipping 404 matching lines @@
   Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR);
   generator.Generate();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64