#ifndef LLVM_CONSTANTSCONTEXT_H
#define LLVM_CONSTANTSCONTEXT_H
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/Hashing.h"
#include "llvm/InlineAsm.h"
#include "llvm/Instructions.h"
#include "llvm/Operator.h"
}
};
+template<class ConstantClass, class TypeClass>
+struct ConstantArrayCreator {
+ static ConstantClass *create(TypeClass *Ty, ArrayRef<Constant*> V) {
+ return new(V.size()) ConstantClass(Ty, V);
+ }
+};
+
template<class ConstantClass>
struct ConstantKeyData {
typedef void ValType;
}
};
-
-template<>
-struct ConstantKeyData<ConstantVector> {
- typedef std::vector<Constant*> ValType;
- static ValType getValType(ConstantVector *CP) {
- std::vector<Constant*> Elements;
- Elements.reserve(CP->getNumOperands());
- for (unsigned i = 0, e = CP->getNumOperands(); i != e; ++i)
- Elements.push_back(CP->getOperand(i));
- return Elements;
- }
-};
-
-template<>
-struct ConstantKeyData<ConstantArray> {
- typedef std::vector<Constant*> ValType;
- static ValType getValType(ConstantArray *CA) {
- std::vector<Constant*> Elements;
- Elements.reserve(CA->getNumOperands());
- for (unsigned i = 0, e = CA->getNumOperands(); i != e; ++i)
- Elements.push_back(cast<Constant>(CA->getOperand(i)));
- return Elements;
- }
-};
-
-template<>
-struct ConstantKeyData<ConstantStruct> {
- typedef std::vector<Constant*> ValType;
- static ValType getValType(ConstantStruct *CS) {
- std::vector<Constant*> Elements;
- Elements.reserve(CS->getNumOperands());
- for (unsigned i = 0, e = CS->getNumOperands(); i != e; ++i)
- Elements.push_back(cast<Constant>(CS->getOperand(i)));
- return Elements;
- }
-};
-
-
template<>
struct ConstantCreator<InlineAsm, PointerType, InlineAsmKeyType> {
static InlineAsm *create(PointerType *Ty, const InlineAsmKeyType &Key) {
}
};
+// Unique map for aggregate constants
+template<class TypeClass, class ConstantClass>
+class ConstantAggrUniqueMap {
+public:
+ typedef ArrayRef<Constant*> Operands;
+ typedef std::pair<TypeClass*, Operands> LookupKey;
+private:
+ struct MapInfo {
+ typedef DenseMapInfo<ConstantClass*> ConstantClassInfo;
+ typedef DenseMapInfo<Constant*> ConstantInfo;
+ typedef DenseMapInfo<TypeClass*> TypeClassInfo;
+ static inline ConstantClass* getEmptyKey() {
+ return ConstantClassInfo::getEmptyKey();
+ }
+ static inline ConstantClass* getTombstoneKey() {
+ return ConstantClassInfo::getTombstoneKey();
+ }
+ static unsigned getHashValue(const ConstantClass *CP) {
+ SmallVector<Constant*, 8> CPOperands;
+ CPOperands.reserve(CP->getNumOperands());
+ for (unsigned I = 0, E = CP->getNumOperands(); I < E; ++I)
+ CPOperands.push_back(CP->getOperand(I));
+ return getHashValue(LookupKey(CP->getType(), CPOperands));
+ }
+ static bool isEqual(const ConstantClass *LHS, const ConstantClass *RHS) {
+ return LHS == RHS;
+ }
+ static unsigned getHashValue(const LookupKey &Val) {
+ return hash_combine(Val.first, hash_combine_range(Val.second.begin(),
+ Val.second.end()));
+ }
+ static bool isEqual(const LookupKey &LHS, const ConstantClass *RHS) {
+ if (RHS == getEmptyKey() || RHS == getTombstoneKey())
+ return false;
+ if (LHS.first != RHS->getType()
+ || LHS.second.size() != RHS->getNumOperands())
+ return false;
+ for (unsigned I = 0, E = RHS->getNumOperands(); I < E; ++I) {
+ if (LHS.second[I] != RHS->getOperand(I))
+ return false;
+ }
+ return true;
+ }
+ };
+public:
+ typedef DenseMap<ConstantClass *, char, MapInfo> MapTy;
+
+private:
+ /// Map - This is the main map from the element descriptor to the Constants.
+ /// This is the primary way we avoid creating two of the same shape
+ /// constant.
+ MapTy Map;
+
+public:
+ typename MapTy::iterator map_begin() { return Map.begin(); }
+ typename MapTy::iterator map_end() { return Map.end(); }
+
+ void freeConstants() {
+ for (typename MapTy::iterator I=Map.begin(), E=Map.end();
+ I != E; ++I) {
+ // Asserts that use_empty().
+ delete I->first;
+ }
+ }
+
+private:
+ typename MapTy::iterator findExistingElement(ConstantClass *CP) {
+ return Map.find(CP);
+ }
+
+ ConstantClass *Create(TypeClass *Ty, Operands V, typename MapTy::iterator I) {
+ ConstantClass* Result =
+ ConstantArrayCreator<ConstantClass,TypeClass>::create(Ty, V);
+
+ assert(Result->getType() == Ty && "Type specified is not correct!");
+ Map[Result] = '\0';
+
+ return Result;
+ }
+public:
+
+ /// getOrCreate - Return the specified constant from the map, creating it if
+ /// necessary.
+ ConstantClass *getOrCreate(TypeClass *Ty, Operands V) {
+ LookupKey Lookup(Ty, V);
+ ConstantClass* Result = 0;
+
+ typename MapTy::iterator I = Map.find_as(Lookup);
+ // Is it in the map?
+ if (I != Map.end())
+ Result = I->first;
+
+ if (!Result) {
+ // If no preexisting value, create one now...
+ Result = Create(Ty, V, I);
+ }
+
+ return Result;
+ }
+
+ /// Find the constant by lookup key.
+ typename MapTy::iterator find(LookupKey Lookup) {
+ return Map.find_as(Lookup);
+ }
+
+ /// Insert the constant into its proper slot.
+ void insert(ConstantClass *CP) {
+ Map[CP] = '\0';
+ }
+
+ /// Remove this constant from the map
+ void remove(ConstantClass *CP) {
+ typename MapTy::iterator I = findExistingElement(CP);
+ assert(I != Map.end() && "Constant not found in constant table!");
+ assert(I->first == CP && "Didn't find correct element?");
+ Map.erase(I);
+ }
+
+ void dump() const {
+ DEBUG(dbgs() << "Constant.cpp: ConstantUniqueMap\n");
+ }
+};
+
}
#endif
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