//
// Unfortunately we can't overload operators on pointer types (like this:)
//
-// inline bool operator==(const ConstPoolVal *V1, const ConstPoolVal *V2)
+// inline bool operator==(const Constant *V1, const Constant *V2)
//
// so we must make due with references, even though it leads to some butt ugly
-// looking code downstream. *sigh* (ex: ConstPoolVal *Result = *V1 + *v2; )
+// looking code downstream. *sigh* (ex: Constant *Result = *V1 + *v2; )
//
//===----------------------------------------------------------------------===//
//
-// WARNING: These operators return pointers to newly 'new'd objects. You MUST
-// make sure to free them if you don't want them hanging around. Also,
-// note that these may return a null object if I don't know how to
-// perform those operations on the specified constant types.
+// WARNING: These operators may return a null object if I don't know how to
+// perform the specified operation on the specified constant types.
//
//===----------------------------------------------------------------------===//
//
#ifndef LLVM_OPT_CONSTANTHANDLING_H
#define LLVM_OPT_CONSTANTHANDLING_H
-#include "llvm/ConstPoolVals.h"
+#include "llvm/ConstantVals.h"
#include "llvm/Instruction.h"
#include "llvm/Type.h"
+class PointerType;
+
+namespace opt {
//===----------------------------------------------------------------------===//
-// Implement == directly...
+// Implement == and != directly...
//===----------------------------------------------------------------------===//
-inline ConstPoolBool *operator==(const ConstPoolVal &V1,
- const ConstPoolVal &V2) {
+inline ConstantBool *operator==(const Constant &V1,
+ const Constant &V2) {
assert(V1.getType() == V2.getType() && "Constant types must be identical!");
- return new ConstPoolBool(V1.equals(&V2));
+ return ConstantBool::get(&V1 == &V2);
+}
+
+inline ConstantBool *operator!=(const Constant &V1,
+ const Constant &V2) {
+ return ConstantBool::get(&V1 != &V2);
}
//===----------------------------------------------------------------------===//
// Implement all other operators indirectly through TypeRules system
//===----------------------------------------------------------------------===//
-class ConstRules {
+class ConstRules : public Annotation {
protected:
- inline ConstRules() {} // Can only be subclassed...
+ inline ConstRules() : Annotation(AID) {} // Can only be subclassed...
public:
+ static AnnotationID AID; // AnnotationID for this class
+
// Unary Operators...
- virtual ConstPoolVal *neg(const ConstPoolVal *V) const = 0;
- virtual ConstPoolVal *not(const ConstPoolVal *V) const = 0;
+ virtual Constant *op_not(const Constant *V) const = 0;
// Binary Operators...
- virtual ConstPoolVal *add(const ConstPoolVal *V1,
- const ConstPoolVal *V2) const = 0;
- virtual ConstPoolVal *sub(const ConstPoolVal *V1,
- const ConstPoolVal *V2) const = 0;
-
- virtual ConstPoolBool *lessthan(const ConstPoolVal *V1,
- const ConstPoolVal *V2) const = 0;
+ 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 ConstantBool *lessthan(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 ConstantPointer *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, (PointerType*)Ty);
+ default: return 0;
+ }
+ }
// ConstRules::get - A type will cache its own type rules if one is needed...
// we just want to make sure to hit the cache instead of doing it indirectly,
// if possible...
//
- static inline const ConstRules *get(const ConstPoolVal &V) {
- const ConstRules *Result = V.getType()->getConstRules();
- return Result ? Result : find(V.getType());
+ static inline ConstRules *get(const Constant &V) {
+ return (ConstRules*)V.getType()->getOrCreateAnnotation(AID);
}
private :
- static const ConstRules *find(const Type *Ty);
+ static Annotation *find(AnnotationID AID, const Annotable *Ty, void *);
ConstRules(const ConstRules &); // Do not implement
ConstRules &operator=(const ConstRules &); // Do not implement
};
-inline ConstPoolVal *operator-(const ConstPoolVal &V) {
- return ConstRules::get(V)->neg(&V);
-}
-
-inline ConstPoolVal *operator!(const ConstPoolVal &V) {
- return ConstRules::get(V)->not(&V);
+inline Constant *operator!(const Constant &V) {
+ return ConstRules::get(V)->op_not(&V);
}
-inline ConstPoolVal *operator+(const ConstPoolVal &V1, const ConstPoolVal &V2) {
+inline Constant *operator+(const Constant &V1, const Constant &V2) {
assert(V1.getType() == V2.getType() && "Constant types must be identical!");
return ConstRules::get(V1)->add(&V1, &V2);
}
-inline ConstPoolVal *operator-(const ConstPoolVal &V1, const ConstPoolVal &V2) {
+inline Constant *operator-(const Constant &V1, const Constant &V2) {
assert(V1.getType() == V2.getType() && "Constant types must be identical!");
return ConstRules::get(V1)->sub(&V1, &V2);
}
-inline ConstPoolBool *operator<(const ConstPoolVal &V1,
- const ConstPoolVal &V2) {
+inline Constant *operator*(const Constant &V1, const Constant &V2) {
+ assert(V1.getType() == V2.getType() && "Constant types must be identical!");
+ return ConstRules::get(V1)->mul(&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)->lessthan(&V1, &V2);
}
// Implement 'derived' operators based on what we already have...
//===----------------------------------------------------------------------===//
-inline ConstPoolBool *operator>(const ConstPoolVal &V1,
- const ConstPoolVal &V2) {
+inline ConstantBool *operator>(const Constant &V1,
+ const Constant &V2) {
return V2 < V1;
}
-inline ConstPoolBool *operator!=(const ConstPoolVal &V1,
- const ConstPoolVal &V2) {
- ConstPoolBool *Result = V1 == V2;
- Result->setValue(!Result->getValue()); // Invert value
- return Result; // !(V1 == V2)
+inline ConstantBool *operator>=(const Constant &V1,
+ const Constant &V2) {
+ return (V1 < V2)->inverted(); // !(V1 < V2)
}
-inline ConstPoolBool *operator>=(const ConstPoolVal &V1,
- const ConstPoolVal &V2) {
- ConstPoolBool *Result = V1 < V2;
- Result->setValue(!Result->getValue()); // Invert value
- return Result; // !(V1 < V2)
-}
-
-inline ConstPoolBool *operator<=(const ConstPoolVal &V1,
- const ConstPoolVal &V2) {
- ConstPoolBool *Result = V1 > V2;
- Result->setValue(!Result->getValue()); // Invert value
- return Result; // !(V1 > V2)
+inline ConstantBool *operator<=(const Constant &V1,
+ const Constant &V2) {
+ return (V1 > V2)->inverted(); // !(V1 > V2)
}
// Implement higher level instruction folding type instructions
//===----------------------------------------------------------------------===//
-inline ConstPoolVal *ConstantFoldUnaryInstruction(unsigned Opcode,
- ConstPoolVal *V) {
+inline Constant *ConstantFoldCastInstruction(const Constant *V,
+ const Type *DestTy) {
+ return ConstRules::get(*V)->castTo(V, DestTy);
+}
+
+inline Constant *ConstantFoldUnaryInstruction(unsigned Opcode,
+ const Constant *V) {
switch (Opcode) {
case Instruction::Not: return !*V;
- case Instruction::Neg: return -*V;
+ // TODO: Handle get element ptr instruction here in the future? GEP null?
}
return 0;
}
-inline ConstPoolVal *ConstantFoldBinaryInstruction(unsigned Opcode,
- ConstPoolVal *V1,
- ConstPoolVal *V2) {
+inline Constant *ConstantFoldBinaryInstruction(unsigned Opcode,
+ const Constant *V1,
+ const Constant *V2) {
switch (Opcode) {
case Instruction::Add: return *V1 + *V2;
case Instruction::Sub: return *V1 - *V2;
return 0;
}
+} // end namespace opt
#endif