Turn off dump/emit routines when building minimal subzero.

src/IceGlobalContext.cpp

 //===- subzero/src/IceGlobalContext.cpp - Global context defs -------------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file defines aspects of the compilation that persist across
@@ skipping 421 matching lines @@
   Timers[StackID].reset();
 }
 
 void GlobalContext::setTimerName(TimerStackIdT StackID,
                                  const IceString &NewName) {
   assert(StackID < Timers.size());
   Timers[StackID].setName(NewName);
 }
 
 void GlobalContext::dumpStats(const IceString &Name, bool Final) {
+  if (!ALLOW_DUMP)
+    return;
   if (Flags.DumpStats) {
     if (Final) {
       StatsCumulative.dump(Name, getStrDump());
     } else {
       StatsFunction.dump(Name, getStrDump());
       StatsCumulative.dump("_TOTAL_", getStrDump());
     }
   }
 }
 
 void GlobalContext::dumpTimers(TimerStackIdT StackID, bool DumpCumulative) {
+  if (!ALLOW_DUMP)
+    return;
   assert(Timers.size() > StackID);
   Timers[StackID].dump(getStrDump(), DumpCumulative);
 }
 
 TimerMarker::TimerMarker(TimerIdT ID, const Cfg *Func)
     : ID(ID), Ctx(Func->getContext()),
       Active(Func->getFocusedTiming() || Ctx->getFlags().SubzeroTimingEnabled) {
   if (Active)
     Ctx->pushTimer(ID);
 }
 
 } // end of namespace Ice