Subzero: Add branch optimization.

src/IceGlobalContext.cpp

 //===- subzero/src/IceGlobalContext.cpp - Global context defs ---*- C++ -*-===//
 //
 //                        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 366 matching lines @@
     BaseOS << "Unsupported constant type: " << Ty;
     llvm_unreachable(BaseOS.str().c_str());
   } break;
   case IceType_void:
   case IceType_NUM:
     break;
   }
   llvm_unreachable("Unknown type");
 }
 
-void GlobalContext::dumpStats(const IceString &Name) {
+void GlobalContext::dumpStats(const IceString &Name, bool Final) {
   if (Flags.DumpStats) {
-    StatsFunction.dump(Name, getStrDump());
-    StatsCumulative.dump("_TOTAL_", getStrDump());
+    if (Final) {
+      StatsCumulative.dump(Name, getStrDump());
+    } else {
+      StatsFunction.dump(Name, getStrDump());
+      StatsCumulative.dump("_TOTAL_", getStrDump());
+    }
   }
 }
 
 void Timer::printElapsedUs(GlobalContext *Ctx, const IceString &Tag) const {
   if (Ctx->isVerbose(IceV_Timing)) {
     // Prefixing with '#' allows timing strings to be included
     // without error in textual assembly output.
     Ctx->getStrDump() << "# " << getElapsedUs() << " usec " << Tag << "\n";
   }
 }
 
 } // end of namespace Ice