Remove debugging code that snuck in with the ARM calling convention changes....

src/builtins-arm.cc

 // Copyright 2006-2008 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 407 matching lines @@
 
   __ ldr(r0, MemOperand(fp, kFunctionOffset));  // get the function
   __ push(r0);
   __ ldr(r0, MemOperand(fp, kArgsOffset));  // get the args array
   __ push(r0);
   __ InvokeBuiltin(Builtins::APPLY_PREPARE, CALL_JS);
 
   // Eagerly check for stack-overflow before starting to push the arguments.
   // r0: number of arguments
   Label okay;
-  { Label L;
-    __ mov(r1, Operand(391864 << kSmiTagSize));
-    __ cmp(r0, r1);
-    __ b(cc, &L);
-    __ bind(&L);
-  }
   ExternalReference stack_guard_limit_address =
       ExternalReference::address_of_stack_guard_limit();
   __ mov(r2, Operand(stack_guard_limit_address));
   __ ldr(r2, MemOperand(r2));
   __ sub(r2, sp, r2);
   __ sub(r2, r2, Operand(3 * kPointerSize));  // limit, index, receiver
 
   __ cmp(r2, Operand(r0, LSL, kPointerSizeLog2 - kSmiTagSize));
   __ b(hi, &okay);
 
@@ skipping 385 matching lines @@
 }
 
 void Builtins::Generate_StubNoRegisters_DebugBreak(MacroAssembler* masm) {
   // Generate nothing as CodeStub CallFunction is not used on ARM.
 }
 
 
 #undef __
 
 } }  // namespace v8::internal