-
-class PointerType;
-
-//===----------------------------------------------------------------------===//
-// Implement all other operators indirectly through TypeRules system
-//===----------------------------------------------------------------------===//
-
-struct ConstRules {
- ConstRules() {}
-
- // Binary Operators...
- virtual Constant *add(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *sub(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *mul(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *div(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *rem(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *op_and(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *op_or (const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *op_xor(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *shl(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *shr(const Constant *V1, const Constant *V2) const = 0;
-
- virtual ConstantBool *lessthan(const Constant *V1,
- const Constant *V2) const = 0;
- virtual ConstantBool *equalto(const Constant *V1,
- const Constant *V2) const = 0;
-
- // Casting operators. ick
- virtual ConstantBool *castToBool (const Constant *V) const = 0;
- virtual ConstantSInt *castToSByte (const Constant *V) const = 0;
- virtual ConstantUInt *castToUByte (const Constant *V) const = 0;
- virtual ConstantSInt *castToShort (const Constant *V) const = 0;
- virtual ConstantUInt *castToUShort(const Constant *V) const = 0;
- virtual ConstantSInt *castToInt (const Constant *V) const = 0;
- virtual ConstantUInt *castToUInt (const Constant *V) const = 0;
- virtual ConstantSInt *castToLong (const Constant *V) const = 0;
- virtual ConstantUInt *castToULong (const Constant *V) const = 0;
- virtual ConstantFP *castToFloat (const Constant *V) const = 0;
- virtual ConstantFP *castToDouble(const Constant *V) const = 0;
- virtual Constant *castToPointer(const Constant *V,
- const PointerType *Ty) const = 0;
-
- inline Constant *castTo(const Constant *V, const Type *Ty) const {
- switch (Ty->getPrimitiveID()) {
- case Type::BoolTyID: return castToBool(V);
- case Type::UByteTyID: return castToUByte(V);
- case Type::SByteTyID: return castToSByte(V);
- case Type::UShortTyID: return castToUShort(V);
- case Type::ShortTyID: return castToShort(V);
- case Type::UIntTyID: return castToUInt(V);
- case Type::IntTyID: return castToInt(V);
- case Type::ULongTyID: return castToULong(V);
- case Type::LongTyID: return castToLong(V);
- case Type::FloatTyID: return castToFloat(V);
- case Type::DoubleTyID: return castToDouble(V);
- case Type::PointerTyID:
- return castToPointer(V, reinterpret_cast<const PointerType*>(Ty));
- default: return 0;
- }
- }
-
- // ConstRules::get - Return an instance of ConstRules for the specified
- // constant operands.
- //
- static ConstRules &get(const Constant &V1, const Constant &V2);
-private:
- ConstRules(const ConstRules &); // Do not implement
- ConstRules &operator=(const ConstRules &); // Do not implement
-};
-
-// Unary operators...
-inline Constant *operator~(const Constant &V) {
- assert(V.getType()->isIntegral() && "Cannot invert non-integral constant!");
- return ConstRules::get(V, V).op_xor(&V,
- ConstantInt::getAllOnesValue(V.getType()));
-}
-
-inline Constant *operator-(const Constant &V) {
- return ConstRules::get(V, V).sub(Constant::getNullValue(V.getType()), &V);
-}
-
-// Standard binary operators...
-inline Constant *operator+(const Constant &V1, const Constant &V2) {
- assert(V1.getType() == V2.getType() && "Constant types must be identical!");
- return ConstRules::get(V1, V2).add(&V1, &V2);
-}
-
-inline Constant *operator-(const Constant &V1, const Constant &V2) {
- assert(V1.getType() == V2.getType() && "Constant types must be identical!");
- return ConstRules::get(V1, V2).sub(&V1, &V2);
-}
-
-inline Constant *operator*(const Constant &V1, const Constant &V2) {
- assert(V1.getType() == V2.getType() && "Constant types must be identical!");
- return ConstRules::get(V1, V2).mul(&V1, &V2);
-}
-
-inline Constant *operator/(const Constant &V1, const Constant &V2) {
- assert(V1.getType() == V2.getType() && "Constant types must be identical!");
- return ConstRules::get(V1, V2).div(&V1, &V2);
-}
-
-inline Constant *operator%(const Constant &V1, const Constant &V2) {
- assert(V1.getType() == V2.getType() && "Constant types must be identical!");
- return ConstRules::get(V1, V2).rem(&V1, &V2);
-}
-
-// Logical Operators...
-inline Constant *operator&(const Constant &V1, const Constant &V2) {
- assert(V1.getType() == V2.getType() && "Constant types must be identical!");
- return ConstRules::get(V1, V2).op_and(&V1, &V2);
-}
-
-inline Constant *operator|(const Constant &V1, const Constant &V2) {
- assert(V1.getType() == V2.getType() && "Constant types must be identical!");
- return ConstRules::get(V1, V2).op_or(&V1, &V2);
-}
-
-inline Constant *operator^(const Constant &V1, const Constant &V2) {
- assert(V1.getType() == V2.getType() && "Constant types must be identical!");
- return ConstRules::get(V1, V2).op_xor(&V1, &V2);
-}
-
-// Shift Instructions...
-inline Constant *operator<<(const Constant &V1, const Constant &V2) {
- assert(V1.getType()->isInteger() && V2.getType() == Type::UByteTy);
- return ConstRules::get(V1, V2).shl(&V1, &V2);
-}
-
-inline Constant *operator>>(const Constant &V1, const Constant &V2) {
- assert(V1.getType()->isInteger() && V2.getType() == Type::UByteTy);
- return ConstRules::get(V1, V2).shr(&V1, &V2);
-}
-
-inline ConstantBool *operator<(const Constant &V1,
- const Constant &V2) {
- assert(V1.getType() == V2.getType() && "Constant types must be identical!");
- return ConstRules::get(V1, V2).lessthan(&V1, &V2);
-}
-
-inline ConstantBool *operator==(const Constant &V1, const Constant &V2) {
- assert(V1.getType() == V2.getType() && "Constant types must be identical!");
- return ConstRules::get(V1, V2).equalto(&V1, &V2);
-}
-
-//===----------------------------------------------------------------------===//
-// Implement 'derived' operators based on what we already have...
-//===----------------------------------------------------------------------===//
-
-inline ConstantBool *operator!=(const Constant &V1, const Constant &V2) {
- if (ConstantBool *V = (V1 == V2))
- return V->inverted(); // !(V1 == V2)
- return 0;
-}
-
-inline ConstantBool *operator>(const Constant &V1,
- const Constant &V2) {
- return V2 < V1;
-}
-
-inline ConstantBool *operator>=(const Constant &V1,
- const Constant &V2) {
- if (ConstantBool *V = (V1 < V2))
- return V->inverted(); // !(V1 < V2)
- return 0;
-}
-
-inline ConstantBool *operator<=(const Constant &V1,
- const Constant &V2) {
- if (ConstantBool *V = (V1 > V2))
- return V->inverted(); // !(V1 > V2)
- return 0;
-}
-
-
-//===----------------------------------------------------------------------===//
-// Implement higher level instruction folding type instructions
-//===----------------------------------------------------------------------===//
-
-// Constant fold various types of instruction...
-Constant *ConstantFoldCastInstruction(const Constant *V, const Type *DestTy);
-Constant *ConstantFoldBinaryInstruction(unsigned Opcode, const Constant *V1,
- const Constant *V2);
-Constant *ConstantFoldShiftInstruction(unsigned Opcode, const Constant *V1,
- const Constant *V2);
-Constant *ConstantFoldGetElementPtr(const Constant *C,
- const std::vector<Constant*> &IdxList);
-
+ class Value;
+ class Constant;
+ class Type;
+
+ // Constant fold various types of instruction...
+ Constant *ConstantFoldCastInstruction(
+ unsigned opcode, ///< The opcode of the cast
+ Constant *V, ///< The source constant
+ Type *DestTy ///< The destination type
+ );
+ Constant *ConstantFoldSelectInstruction(Constant *Cond,
+ Constant *V1, Constant *V2);
+ Constant *ConstantFoldExtractElementInstruction(Constant *Val, Constant *Idx);
+ Constant *ConstantFoldInsertElementInstruction(Constant *Val, Constant *Elt,
+ Constant *Idx);
+ Constant *ConstantFoldShuffleVectorInstruction(Constant *V1, Constant *V2,
+ Constant *Mask);
+ Constant *ConstantFoldExtractValueInstruction(Constant *Agg,
+ ArrayRef<unsigned> Idxs);
+ Constant *ConstantFoldInsertValueInstruction(Constant *Agg, Constant *Val,
+ ArrayRef<unsigned> Idxs);
+ Constant *ConstantFoldBinaryInstruction(unsigned Opcode, Constant *V1,
+ Constant *V2);
+ Constant *ConstantFoldCompareInstruction(unsigned short predicate,
+ Constant *C1, Constant *C2);
+ Constant *ConstantFoldGetElementPtr(Constant *C, bool inBounds,
+ ArrayRef<Constant *> Idxs);
+ Constant *ConstantFoldGetElementPtr(Constant *C, bool inBounds,
+ ArrayRef<Value *> Idxs);