[AVX] Make TernOpInit Unique
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.
llvm-svn: 136496
diff --git a/llvm/utils/TableGen/Record.cpp b/llvm/utils/TableGen/Record.cpp
index 56a46e1..a6b5c4b 100644
--- a/llvm/utils/TableGen/Record.cpp
+++ b/llvm/utils/TableGen/Record.cpp
@@ -975,7 +975,26 @@
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,