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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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28
lib/VMCore/BasicBlock.cpp
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@@ -22,6 +22,15 @@
#include <algorithm>
using namespace llvm;
inline ValueSymbolTable *
ilist_traits<Instruction>::getSymTab(BasicBlock *BB) {
if (BB)
if (Function *F = BB->getParent())
return &F->getValueSymbolTable();
return 0;
}
namespace {
/// DummyInst - An instance of this class is used to mark the end of the
/// instruction list. This is not a real instruction.
@@ -57,24 +66,24 @@ iplist<Instruction> &ilist_traits<Instruction>::getList(BasicBlock *BB) {
// Explicit instantiation of SymbolTableListTraits since some of the methods
// are not in the public header file...
template class SymbolTableListTraits<Instruction, BasicBlock, Function>;
template class SymbolTableListTraits<Instruction, BasicBlock>;
BasicBlock::BasicBlock(const std::string &Name, Function *Parent,
BasicBlock::BasicBlock(const std::string &Name, Function *NewParent,
BasicBlock *InsertBefore)
: Value(Type::LabelTy, Value::BasicBlockVal) {
// Initialize the instlist...
: Value(Type::LabelTy, Value::BasicBlockVal), Parent(0) {
// Initialize the instlist.
InstList.setItemParent(this);
// Make sure that we get added to a function
LeakDetector::addGarbageObject(this);
if (InsertBefore) {
assert(Parent &&
assert(NewParent &&
"Cannot insert block before another block with no function!");
Parent->getBasicBlockList().insert(InsertBefore, this);
} else if (Parent) {
Parent->getBasicBlockList().push_back(this);
NewParent->getBasicBlockList().insert(InsertBefore, this);
} else if (NewParent) {
NewParent->getBasicBlockList().push_back(this);
}
setName(Name);
@@ -91,7 +100,8 @@ void BasicBlock::setParent(Function *parent) {
if (getParent())
LeakDetector::addGarbageObject(this);
InstList.setParent(parent);
// Set Parent=parent, updating instruction symtab entries as appropriate.
InstList.setSymTabObject(&Parent, parent);
if (getParent())
LeakDetector::removeGarbageObject(this);