[lld] r256380 - Add comments.

[Rui Ueyama via llvm-commits]

Author: ruiu
Date: Thu Dec 24 04:37:32 2015
New Revision: 256380

URL: http://llvm.org/viewvc/llvm-project?rev=256380&view=rev
Log:
Add comments.

Modified:
    lld/trunk/ELF/SymbolTable.cpp

Modified: lld/trunk/ELF/SymbolTable.cpp
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/SymbolTable.cpp?rev=256380&r1=256379&r2=256380&view=diff
==============================================================================
--- lld/trunk/ELF/SymbolTable.cpp (original)
+++ lld/trunk/ELF/SymbolTable.cpp Thu Dec 24 04:37:32 2015
@@ -78,6 +78,7 @@ void SymbolTable<ELFT>::addFile(std::uni
     resolve(B);
 }
 
+// Add an undefined symbol.
 template <class ELFT>
 SymbolBody *SymbolTable<ELFT>::addUndefined(StringRef Name) {
   auto *Sym = new (Alloc) Undefined(Name, false, STV_DEFAULT, false);
@@ -85,6 +86,8 @@ SymbolBody *SymbolTable<ELFT>::addUndefi
   return Sym;
 }
 
+// Add an undefined symbol. Unlike addUndefined, that symbol
+// doesn't have to be resolved, thus "opt" (optional).
 template <class ELFT>
 SymbolBody *SymbolTable<ELFT>::addUndefinedOpt(StringRef Name) {
   auto *Sym = new (Alloc) Undefined(Name, false, STV_HIDDEN, true);