MIPS: Followup 'Introduce BUILTIN_CALL_PAIR.'

src/mips/simulator-mips.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <limits.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <cmath>
 
 #if V8_TARGET_ARCH_MIPS
@@ skipping 2189 matching lines @@
       // pass it to the target function.
       ObjectTriple result = target(arg1, arg2, arg3, arg4, arg5);
       if (::v8::internal::FLAG_trace_sim) {
         PrintF("Returned { %p, %p, %p }\n", result.x, result.y, result.z);
       }
       // Return is passed back in address pointed to by hidden first argument.
       ObjectTriple* sim_result = reinterpret_cast<ObjectTriple*>(arg0);
       *sim_result = result;
       set_register(v0, arg0);
     } else {
+      DCHECK(redirection->type() == ExternalReference::BUILTIN_CALL ||
+             redirection->type() == ExternalReference::BUILTIN_CALL_PAIR);
       SimulatorRuntimeCall target =
                   reinterpret_cast<SimulatorRuntimeCall>(external);
       if (::v8::internal::FLAG_trace_sim) {
         PrintF(
             "Call to host function at %p "
             "args %08x, %08x, %08x, %08x, %08x, %08x\n",
             FUNCTION_ADDR(target),
             arg0,
             arg1,
             arg2,
@@ skipping 2393 matching lines @@
 
 
 #undef UNSUPPORTED
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // USE_SIMULATOR
 
 #endif  // V8_TARGET_ARCH_MIPS