Subzero: Improve the output with the --timing-focus=xxx option.

src/IceCfgNode.cpp

 //===- subzero/src/IceCfgNode.cpp - Basic block (node) implementation -----===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements the CfgNode class, including the complexities
@@ skipping 375 matching lines @@
             Variable *Var = llvm::cast<Variable>(I->getSrc(Src));
             InstNumberT InstNumber = I->getNumber();
             Liveness->addLiveRange(Var, InstNumber, InstNumber, 1);
           }
         }
       }
     }
   }
   if (Mode != Liveness_Intervals)
     return;
+  TimerMarker T1(TimerStack::TT_liveRangeCtor, Func);
 
   SizeT NumVars = Liveness->getNumVarsInNode(this);
   SizeT NumGlobals = Liveness->getNumGlobalVars();
   llvm::BitVector &LiveIn = Liveness->getLiveIn(this);
   llvm::BitVector &LiveOut = Liveness->getLiveOut(this);
   std::vector<InstNumberT> &LiveBegin = Liveness->getLiveBegin(this);
   std::vector<InstNumberT> &LiveEnd = Liveness->getLiveEnd(this);
   for (SizeT i = 0; i < NumVars; ++i) {
     // Deal with the case where the variable is both live-in and
     // live-out, but LiveEnd comes before LiveBegin.  In this case, we
@@ skipping 137 matching lines @@
       if (!First)
         Str << ", ";
       First = false;
       Str << "%" << I->getName();
     }
     Str << "\n";
   }
 }
 
 } // end of namespace Ice