Subzero: Don't store std::string objects inside Variable.

src/IceConverter.cpp

 //===- subzero/src/IceConverter.cpp - Converts LLVM to Ice  ---------------===//
 //
 //                        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 LLVM to ICE converter.
@@ skipping 127 matching lines @@
   }
 
 private:
   // LLVM values (instructions, etc.) are mapped directly to ICE variables.
   // mapValueToIceVar has a version that forces an ICE type on the variable,
   // and a version that just uses convertToIceType on V.
   Ice::Variable *mapValueToIceVar(const Value *V, Ice::Type IceTy) {
     if (IceTy == Ice::IceType_void)
       return nullptr;
     if (VarMap.find(V) == VarMap.end()) {
-      VarMap[V] = Func->makeVariable(IceTy, V->getName());
+      VarMap[V] = Func->makeVariable(IceTy);
+      if (ALLOW_DUMP)
+        VarMap[V]->setName(Func, V->getName());
     }
     return VarMap[V];
   }
 
   Ice::Variable *mapValueToIceVar(const Value *V) {
     return mapValueToIceVar(V, convertToIceType(V->getType()));
   }
 
   Ice::CfgNode *mapBasicBlockToNode(const BasicBlock *BB) {
     if (NodeMap.find(BB) == NodeMap.end()) {
@@ skipping 735 matching lines @@
     Cfg *Fcn = FunctionConverter.convertFunction(&I);
     translateFcn(Fcn);
     if (ALLOW_DUMP && Ctx->getFlags().TimeEachFunction)
       Ctx->popTimer(TimerID, StackID);
   }
 
   emitConstants();
 }
 
 } // end of namespace Ice