Subzero: With -asm-verbose, make the predecessor list more compact.

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.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 979 matching lines @@
   if (DecorateAsm) {
     constexpr bool IsLiveIn = true;
     emitRegisterUsage(Str, Func, this, IsLiveIn, LiveRegCount);
     if (getInEdges().size()) {
       Str << "\t\t\t\t# preds=";
       bool First = true;
       for (CfgNode *I : getInEdges()) {
         if (!First)
           Str << ",";
         First = false;
-        Str << I->getAsmName();
+        Str << "$" << I->getName();
       }
       Str << "\n";
     }
     if (getLoopNestDepth()) {
       Str << "\t\t\t\t# loop depth=" << getLoopNestDepth() << "\n";
     }
   }
 
   for (const Inst &I : Phis) {
     if (I.isDeleted())
@@ skipping 357 matching lines @@
   InstIntrinsicCall *Inst = InstIntrinsicCall::create(
       Func, 5, Func->makeVariable(IceType_i64), RMWI64Name, Info->Info);
   Inst->addArg(AtomicRMWOp);
   Inst->addArg(Counter);
   Inst->addArg(One);
   Inst->addArg(OrderAcquireRelease);
   Insts.push_front(Inst);
 }
 
 } // end of namespace Ice