Refactor SymbolTableListTraits to only have a single pointer in it, instead

of two.  This shrinkifies Function by 8 bytes (104->96) and Module by 8
bytes (68->60).  On a testcase of mine, this reduces the memory used to
read a module header from 565680b to 561024, a little over 4K.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36188 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 13 deletions

diff --git a/include/llvm/ValueSymbolTable.h b/include/llvm/ValueSymbolTable.h
index 2436cbf42e..679fd8680e 100644
--- a/include/llvm/ValueSymbolTable.h
+++ b/include/llvm/ValueSymbolTable.h
@@ -18,10 +18,8 @@
 #include "llvm/ADT/StringMap.h"
 
 namespace llvm {
-  template<typename ValueSubClass, typename ItemParentClass,
-           typename SymTabClass, typename SubClass>
+  template<typename ValueSubClass, typename ItemParentClass>
         class SymbolTableListTraits;
-  template<typename NodeTy> struct ilist_traits;
   class BasicBlock;
   class Function;
   class Module;
@@ -32,16 +30,11 @@ namespace llvm {
 ///
 class ValueSymbolTable {
   friend class Value;
-  friend class SymbolTableListTraits<Argument, Function, Function,
-                                     ilist_traits<Argument> >;
-  friend class SymbolTableListTraits<BasicBlock, Function, Function,
-                                     ilist_traits<BasicBlock> >;
-  friend class SymbolTableListTraits<Instruction, BasicBlock, Function,
-                                     ilist_traits<Instruction> >;
-  friend class SymbolTableListTraits<Function, Module, Module, 
-                                     ilist_traits<Function> >;
-  friend class SymbolTableListTraits<GlobalVariable, Module, Module, 
-                                     ilist_traits<GlobalVariable> >;
+  friend class SymbolTableListTraits<Argument, Function>;
+  friend class SymbolTableListTraits<BasicBlock, Function>;
+  friend class SymbolTableListTraits<Instruction, BasicBlock>;
+  friend class SymbolTableListTraits<Function, Module>;
+  friend class SymbolTableListTraits<GlobalVariable, Module>;
 /// @name Types
 /// @{
 public: