Subzero: Remove IceString.

src/IceInstX86Base.h

 //===- subzero/src/IceInstX86Base.h - Generic x86 instructions -*- C++ -*--===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 314 matching lines @@
   class InstX86Label final : public InstX86Base {
     InstX86Label() = delete;
     InstX86Label(const InstX86Label &) = delete;
     InstX86Label &operator=(const InstX86Label &) = delete;
 
   public:
     static InstX86Label *create(Cfg *Func, TargetLowering *Target) {
       return new (Func->allocate<InstX86Label>()) InstX86Label(Func, Target);
     }
     uint32_t getEmitInstCount() const override { return 0; }
-    IceString getName(const Cfg *Func) const;
-    SizeT getNumber() const { return Number; }
+    GlobalString getLabelName() const { return Name; }
+    SizeT getLabelNumber() const { return LabelNumber; }
     void emit(const Cfg *Func) const override;
     void emitIAS(const Cfg *Func) const override;
     void dump(const Cfg *Func) const override;
     void setRelocOffset(RelocOffset *Value) { OffsetReloc = Value; }
 
   private:
     InstX86Label(Cfg *Func, TargetLowering *Target);
 
-    SizeT Number; // used for unique label generation.
+    SizeT LabelNumber; // used for unique label generation.
     RelocOffset *OffsetReloc = nullptr;
+    GlobalString Name;
   };
 
   /// Conditional and unconditional branch instruction.
   class InstX86Br final : public InstX86Base {
     InstX86Br() = delete;
     InstX86Br(const InstX86Br &) = delete;
     InstX86Br &operator=(const InstX86Br &) = delete;
 
   public:
     enum Mode { Near, Far };
@@ skipping 3171 matching lines @@
           &InstImpl<TraitsType>::Assembler::psrl};                             \
   }                                                                            \
   }
 
 } // end of namespace X86NAMESPACE
 } // end of namespace Ice
 
 #include "IceInstX86BaseImpl.h"
 
 #endif // SUBZERO_SRC_ICEINSTX86BASE_H