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

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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
This commit is contained in:
Chris Lattner
2007-04-17 03:26:42 +00:00
parent 205c27d4a9
commit 17fcdd5e1b
13 changed files with 138 additions and 113 deletions
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10
include/llvm/BasicBlock.h
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@ -25,11 +25,12 @@ template <class Term, class BB> class SuccIterator; // Successor Iterator
template <class Ptr, class USE_iterator> class PredIterator;
template<> struct ilist_traits<Instruction>
: public SymbolTableListTraits<Instruction, BasicBlock, Function> {
: public SymbolTableListTraits<Instruction, BasicBlock> {
// createSentinel is used to create a node that marks the end of the list...
static Instruction *createSentinel();
static void destroySentinel(Instruction *I) { delete I; }
static iplist<Instruction> &getList(BasicBlock *BB);
static ValueSymbolTable *getSymTab(BasicBlock *ItemParent);
};
/// This represents a single basic block in LLVM. A basic block is simply a
@ -52,11 +53,12 @@ public:
private :
InstListType InstList;
BasicBlock *Prev, *Next; // Next and Prev links for our intrusive linked list
Function *Parent;
void setParent(Function *parent);
void setNext(BasicBlock *N) { Next = N; }
void setPrev(BasicBlock *N) { Prev = N; }
friend class SymbolTableListTraits<BasicBlock, Function, Function>;
friend class SymbolTableListTraits<BasicBlock, Function>;
BasicBlock(const BasicBlock &); // Do not implement
void operator=(const BasicBlock &); // Do not implement
@ -76,8 +78,8 @@ public:
/// getParent - Return the enclosing method, or null if none
///
const Function *getParent() const { return InstList.getParent(); }
Function *getParent() { return InstList.getParent(); }
const Function *getParent() const { return Parent; }
Function *getParent() { return Parent; }
// getNext/Prev - Return the next or previous basic block in the list.
BasicBlock *getNext() { return Next; }