Fix symbol table handling in functions.

src/IceCfgNode.cpp

Index: src/IceCfgNode.cpp
diff --git a/src/IceCfgNode.cpp b/src/IceCfgNode.cpp
index 696a2f0b87ad9fb948535f3ded3d0ece2a0ccfe2..50b4487f879f6a4e2908aa4324f411d4f78044ca 100644
--- a/src/IceCfgNode.cpp
+++ b/src/IceCfgNode.cpp
@@ -34,6 +34,11 @@ IceString CfgNode::getName() const {
   return buf;
 }
 
+void CfgNode::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;
+}
+
 // Adds an instruction to either the Phi list or the regular
 // instruction list.  Validates that all Phis are added before all
 // regular instructions.