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[AVX] Make UnOpInit Unique

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Make sure UnOpInits are unique and created only once.  This will be
important for AVX/SIMD as many operators will be used to generate
patterns and other relevant data.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136494 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Greene 2011-07-29 19:07:18 +00:00
parent aad4c9fc37
commit 6f03b636d2
1 changed files with 10 additions and 1 deletions
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11
utils/TableGen/Record.cpp
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@ -714,7 +714,16 @@ const Init *OpInit::resolveListElementReference(Record &R, const RecordVal *IRV,
}
const UnOpInit *UnOpInit::get(UnaryOp opc, const Init *lhs, RecTy *Type) {
return new UnOpInit(opc, lhs, Type);
typedef std::pair<std::pair<unsigned, const Init *>, RecTy *> Key;
typedef DenseMap<Key, UnOpInit *> Pool;
static Pool ThePool;
Key TheKey(std::make_pair(std::make_pair(opc, lhs), Type));
UnOpInit *&I = ThePool[TheKey];
if (!I) I = new UnOpInit(opc, lhs, Type);
return I;
}
const Init *UnOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) const {