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[AVX] Make FieldInit Unique

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Make sure FieldInits are unique and created only once.

llvm-svn: 136500
This commit is contained in:
David Greene 2011-07-29 19:07:24 +00:00
parent 619a865a18
commit e1cb4aa5bb
1 changed files with 9 additions and 1 deletions
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10
utils/TableGen/Record.cpp
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@ -1475,7 +1475,15 @@ std::string DefInit::getAsString() const {
} }
const FieldInit *FieldInit::get(const Init *R, const std::string &FN) { const FieldInit *FieldInit::get(const Init *R, const std::string &FN) {
return new FieldInit(R, FN); typedef std::pair<const Init *, TableGenStringKey> Key;
typedef DenseMap<Key, FieldInit *> Pool;
static Pool ThePool;
Key TheKey(std::make_pair(R, FN));
FieldInit *&I = ThePool[TheKey];
if (!I) I = new FieldInit(R, FN);
return I;
} }
const Init *FieldInit::resolveBitReference(Record &R, const RecordVal *RV, const Init *FieldInit::resolveBitReference(Record &R, const RecordVal *RV,