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[AVX] Make VarBitInit Unique 

Make sure VarBitInits are unique and created only once.

llvm-svn: 136498
This commit is contained in:
David Greene 2011-07-29 19:07:22 +00:00
parent cde30d04b7
commit 9aa82842c7
1 changed files with 10 additions and 1 deletions
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11
llvm/utils/TableGen/Record.cpp
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@ -1389,7 +1389,16 @@ const Init *VarInit::resolveReferences(Record &R, const RecordVal *RV) const {
}
const VarBitInit *VarBitInit::get(const TypedInit *T, unsigned B) {
return new VarBitInit(T, B);
typedef std::pair<const TypedInit *, unsigned> Key;
typedef DenseMap<Key, VarBitInit *> Pool;
static Pool ThePool;
Key TheKey(std::make_pair(T, B));
VarBitInit *&I = ThePool[TheKey];
if (!I) I = new VarBitInit(T, B);
return I;
}
std::string VarBitInit::getAsString() const {