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[AVX] Make TernOpInit Unique

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Make sure TernOpInits 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@136496 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Greene 2011-07-29 19:07:20 +00:00
parent 65a5b8cb3b
commit b76a1e6993
1 changed files with 20 additions and 1 deletions
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21
utils/TableGen/Record.cpp
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@ -975,7 +975,26 @@ std::string BinOpInit::getAsString() const {
const TernOpInit *TernOpInit::get(TernaryOp opc, const Init *lhs,
const Init *mhs, const Init *rhs,
RecTy *Type) {
return new TernOpInit(opc, lhs, mhs, rhs, Type);
typedef std::pair<
std::pair<
std::pair<std::pair<unsigned, RecTy *>, const Init *>,
const Init *
>,
const Init *
> Key;
typedef DenseMap<Key, TernOpInit *> Pool;
static Pool ThePool;
Key TheKey(std::make_pair(std::make_pair(std::make_pair(std::make_pair(opc,
Type),
lhs),
mhs),
rhs));
TernOpInit *&I = ThePool[TheKey];
if (!I) I = new TernOpInit(opc, lhs, mhs, rhs, Type);
return I;
}
static const Init *ForeachHelper(const Init *LHS, const Init *MHS,