Fix symbol table handling in functions.

src/IceOperand.cpp

 //===- subzero/src/IceOperand.cpp - High-level operand 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 Operand class and its target-independent
@@ skipping 170 matching lines @@
 }
 
 IceString Variable::getName() const {
   if (!Name.empty())
     return Name;
   char buf[30];
   snprintf(buf, llvm::array_lengthof(buf), "__%u", getIndex());
   return buf;
 }
 
+void Variable::setName(IceString &NewName) {
+  assert(Name.empty());

[Jim Stichnoth, 2014/09/10 18:44:23]

Document that the assert is to be sure true renamings aren't happening.

[Karl, 2014/09/10 21:14:33]

Done.

+  Name = NewName;
+}
+
 Variable Variable::asType(Type Ty) {
   Variable V(Ty, DefNode, Number, Name);
   V.RegNum = RegNum;
   V.StackOffset = StackOffset;
   return V;
 }
 
 // ======================== dump routines ======================== //
 
 void Variable::emit(const Cfg *Func) const {
@@ skipping 64 matching lines @@
 
 Ostream &operator<<(Ostream &Str, const RegWeight &W) {
   if (W.getWeight() == RegWeight::Inf)
     Str << "Inf";
   else
     Str << W.getWeight();
   return Str;
 }
 
 } // end of namespace Ice