//
//===----------------------------------------------------------------------===//
-#include "llvm/Optimizations/ConstantHandling.h"
+#include "llvm/ConstantHandling.h"
+#include "llvm/iPHINode.h"
+#include "llvm/InstrTypes.h"
+#include "llvm/DerivedTypes.h"
+#include <cmath>
AnnotationID ConstRules::AID(AnnotationManager::getID("opt::ConstRules",
&ConstRules::find));
+// ConstantFoldInstruction - Attempt to constant fold the specified instruction.
+// If successful, the constant result is returned, if not, null is returned.
+//
+Constant *ConstantFoldInstruction(Instruction *I) {
+ if (PHINode *PN = dyn_cast<PHINode>(I)) {
+ if (PN->getNumIncomingValues() == 0)
+ return Constant::getNullValue(PN->getType());
+
+ Constant *Result = dyn_cast<Constant>(PN->getIncomingValue(0));
+ if (Result == 0) return 0;
+
+ // Handle PHI nodes specially here...
+ for (unsigned i = 1, e = PN->getNumIncomingValues(); i != e; ++i)
+ if (PN->getIncomingValue(i) != Result)
+ return 0; // Not all the same incoming constants...
+
+ // If we reach here, all incoming values are the same constant.
+ return Result;
+ }
+
+ Constant *Op0 = 0;
+ Constant *Op1 = 0;
+
+ if (I->getNumOperands() != 0) { // Get first operand if it's a constant...
+ Op0 = dyn_cast<Constant>(I->getOperand(0));
+ if (Op0 == 0) return 0; // Not a constant?, can't fold
+
+ if (I->getNumOperands() != 1) { // Get second operand if it's a constant...
+ Op1 = dyn_cast<Constant>(I->getOperand(1));
+ if (Op1 == 0) return 0; // Not a constant?, can't fold
+ }
+ }
+
+ if (isa<BinaryOperator>(I))
+ return ConstantExpr::get(I->getOpcode(), Op0, Op1);
+
+ switch (I->getOpcode()) {
+ case Instruction::Cast:
+ return ConstantExpr::getCast(Op0, I->getType());
+ case Instruction::Shl:
+ case Instruction::Shr:
+ return ConstantExpr::getShift(I->getOpcode(), Op0, Op1);
+ case Instruction::GetElementPtr: {
+ std::vector<Constant*> IdxList;
+ IdxList.reserve(I->getNumOperands()-1);
+ if (Op1) IdxList.push_back(Op1);
+ for (unsigned i = 2, e = I->getNumOperands(); i != e; ++i)
+ if (Constant *C = dyn_cast<Constant>(I->getOperand(i)))
+ IdxList.push_back(C);
+ else
+ return 0; // Non-constant operand
+ return ConstantExpr::getGetElementPtr(Op0, IdxList);
+ }
+ default:
+ return 0;
+ }
+}
+
+static unsigned getSize(const Type *Ty) {
+ unsigned S = Ty->getPrimitiveSize();
+ return S ? S : 8; // Treat pointers at 8 bytes
+}
+
+Constant *ConstantFoldCastInstruction(const Constant *V, const Type *DestTy) {
+ if (V->getType() == DestTy) return (Constant*)V;
+
+ if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(V))
+ if (CE->getOpcode() == Instruction::Cast) {
+ Constant *Op = const_cast<Constant*>(CE->getOperand(0));
+ // Try to not produce a cast of a cast, which is almost always redundant.
+ if (!Op->getType()->isFloatingPoint() &&
+ !CE->getType()->isFloatingPoint() &&
+ !DestTy->getType()->isFloatingPoint()) {
+ unsigned S1 = getSize(Op->getType()), S2 = getSize(CE->getType());
+ unsigned S3 = getSize(DestTy);
+ if (Op->getType() == DestTy && S3 >= S2)
+ return Op;
+ if (S1 >= S2 && S2 >= S3)
+ return ConstantExpr::getCast(Op, DestTy);
+ if (S1 <= S2 && S2 >= S3 && S1 <= S3)
+ return ConstantExpr::getCast(Op, DestTy);
+ }
+ }
+
+ return ConstRules::get(*V, *V)->castTo(V, DestTy);
+}
+
+Constant *ConstantFoldBinaryInstruction(unsigned Opcode, const Constant *V1,
+ const Constant *V2) {
+ switch (Opcode) {
+ case Instruction::Add: return *V1 + *V2;
+ case Instruction::Sub: return *V1 - *V2;
+ case Instruction::Mul: return *V1 * *V2;
+ case Instruction::Div: return *V1 / *V2;
+ case Instruction::Rem: return *V1 % *V2;
+ case Instruction::And: return *V1 & *V2;
+ case Instruction::Or: return *V1 | *V2;
+ case Instruction::Xor: return *V1 ^ *V2;
+
+ case Instruction::SetEQ: return *V1 == *V2;
+ case Instruction::SetNE: return *V1 != *V2;
+ case Instruction::SetLE: return *V1 <= *V2;
+ case Instruction::SetGE: return *V1 >= *V2;
+ case Instruction::SetLT: return *V1 < *V2;
+ case Instruction::SetGT: return *V1 > *V2;
+ }
+ return 0;
+}
+
+Constant *ConstantFoldShiftInstruction(unsigned Opcode, const Constant *V1,
+ const Constant *V2) {
+ switch (Opcode) {
+ case Instruction::Shl: return *V1 << *V2;
+ case Instruction::Shr: return *V1 >> *V2;
+ default: return 0;
+ }
+}
+
+Constant *ConstantFoldGetElementPtr(const Constant *C,
+ const std::vector<Constant*> &IdxList) {
+ if (IdxList.size() == 0 ||
+ (IdxList.size() == 1 && IdxList[0]->isNullValue()))
+ return const_cast<Constant*>(C);
+
+ // If C is null and all idx's are null, return null of the right type.
+
+ // FIXME: Implement folding of GEP constant exprs the same as instcombine does
+
+ if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
+ // Implement folding of:
+ // void ()** getelementptr (%struct..TorRec* getelementptr
+ // ([N x %struct..TorRec]* %llvm.global_dtors, long 0, long 0),
+ // long 0, ubyte 1)
+ // Into:
+ // %struct..TorRec* getelementptr ([N x %struct..TorRec]*
+ // %llvm.global_dtors, long 0, long 0, ubyte 1)
+ //
+ if (CE->getOpcode() == Instruction::GetElementPtr)
+ if (IdxList[0] == Constant::getNullValue(Type::LongTy)) {
+ std::vector<Constant*> NewIndices;
+ NewIndices.reserve(IdxList.size() + CE->getNumOperands());
+ for (unsigned i = 1, e = CE->getNumOperands(); i != e; ++i)
+ NewIndices.push_back(cast<Constant>(CE->getOperand(i)));
+ NewIndices.insert(NewIndices.end(), IdxList.begin()+1, IdxList.end());
+ return ConstantExpr::getGetElementPtr(CE->getOperand(0), NewIndices);
+ }
+
+ // Implement folding of:
+ // int* getelementptr ([2 x int]* cast ([3 x int]* %X to [2 x int]*),
+ // long 0, long 0)
+ // To: int* getelementptr ([3 x int]* %X, long 0, long 0)
+ //
+ if (CE->getOpcode() == Instruction::Cast && IdxList.size() > 1 &&
+ IdxList[0]->isNullValue())
+ if (const PointerType *SPT =
+ dyn_cast<PointerType>(CE->getOperand(0)->getType()))
+ if (const ArrayType *SAT = dyn_cast<ArrayType>(SPT->getElementType()))
+ if (const ArrayType *CAT =
+ dyn_cast<ArrayType>(cast<PointerType>(C->getType())->getElementType()))
+ if (CAT->getElementType() == SAT->getElementType())
+ return ConstantExpr::getGetElementPtr(
+ (Constant*)CE->getOperand(0), IdxList);
+ }
+ return 0;
+}
+
+
//===----------------------------------------------------------------------===//
// TemplateRules Class
//===----------------------------------------------------------------------===//
// Redirecting functions that cast to the appropriate types
//===--------------------------------------------------------------------===//
- virtual Constant *op_not(const Constant *V) const {
- return SubClassName::Not((const ArgType *)V);
- }
-
-
- virtual Constant *add(const Constant *V1,
- const Constant *V2) const {
+ virtual Constant *add(const Constant *V1, const Constant *V2) const {
return SubClassName::Add((const ArgType *)V1, (const ArgType *)V2);
}
-
- virtual Constant *sub(const Constant *V1,
- const Constant *V2) const {
+ virtual Constant *sub(const Constant *V1, const Constant *V2) const {
return SubClassName::Sub((const ArgType *)V1, (const ArgType *)V2);
}
-
- virtual Constant *mul(const Constant *V1,
- const Constant *V2) const {
+ virtual Constant *mul(const Constant *V1, const Constant *V2) const {
return SubClassName::Mul((const ArgType *)V1, (const ArgType *)V2);
}
+ virtual Constant *div(const Constant *V1, const Constant *V2) const {
+ return SubClassName::Div((const ArgType *)V1, (const ArgType *)V2);
+ }
+ virtual Constant *rem(const Constant *V1, const Constant *V2) const {
+ return SubClassName::Rem((const ArgType *)V1, (const ArgType *)V2);
+ }
+ virtual Constant *op_and(const Constant *V1, const Constant *V2) const {
+ return SubClassName::And((const ArgType *)V1, (const ArgType *)V2);
+ }
+ virtual Constant *op_or(const Constant *V1, const Constant *V2) const {
+ return SubClassName::Or((const ArgType *)V1, (const ArgType *)V2);
+ }
+ virtual Constant *op_xor(const Constant *V1, const Constant *V2) const {
+ return SubClassName::Xor((const ArgType *)V1, (const ArgType *)V2);
+ }
+ virtual Constant *shl(const Constant *V1, const Constant *V2) const {
+ return SubClassName::Shl((const ArgType *)V1, (const ArgType *)V2);
+ }
+ virtual Constant *shr(const Constant *V1, const Constant *V2) const {
+ return SubClassName::Shr((const ArgType *)V1, (const ArgType *)V2);
+ }
virtual ConstantBool *lessthan(const Constant *V1,
const Constant *V2) const {
virtual ConstantFP *castToDouble(const Constant *V) const {
return SubClassName::CastToDouble((const ArgType*)V);
}
- virtual ConstantPointer *castToPointer(const Constant *V,
- const PointerType *Ty) const {
+ virtual Constant *castToPointer(const Constant *V,
+ const PointerType *Ty) const {
return SubClassName::CastToPointer((const ArgType*)V, Ty);
}
// Default "noop" implementations
//===--------------------------------------------------------------------===//
- inline static Constant *Not(const ArgType *V) { return 0; }
-
- inline static Constant *Add(const ArgType *V1, const ArgType *V2) {
- return 0;
- }
- inline static Constant *Sub(const ArgType *V1, const ArgType *V2) {
- return 0;
- }
- inline static Constant *Mul(const ArgType *V1, const ArgType *V2) {
- return 0;
- }
- inline static ConstantBool *LessThan(const ArgType *V1, const ArgType *V2) {
+ static Constant *Add(const ArgType *V1, const ArgType *V2) { return 0; }
+ static Constant *Sub(const ArgType *V1, const ArgType *V2) { return 0; }
+ static Constant *Mul(const ArgType *V1, const ArgType *V2) { return 0; }
+ static Constant *Div(const ArgType *V1, const ArgType *V2) { return 0; }
+ static Constant *Rem(const ArgType *V1, const ArgType *V2) { return 0; }
+ static Constant *And(const ArgType *V1, const ArgType *V2) { return 0; }
+ static Constant *Or (const ArgType *V1, const ArgType *V2) { return 0; }
+ static Constant *Xor(const ArgType *V1, const ArgType *V2) { return 0; }
+ static Constant *Shl(const ArgType *V1, const ArgType *V2) { return 0; }
+ static Constant *Shr(const ArgType *V1, const ArgType *V2) { return 0; }
+ static ConstantBool *LessThan(const ArgType *V1, const ArgType *V2) {
return 0;
}
// Casting operators. ick
- inline static ConstantBool *CastToBool (const Constant *V) { return 0; }
- inline static ConstantSInt *CastToSByte (const Constant *V) { return 0; }
- inline static ConstantUInt *CastToUByte (const Constant *V) { return 0; }
- inline static ConstantSInt *CastToShort (const Constant *V) { return 0; }
- inline static ConstantUInt *CastToUShort(const Constant *V) { return 0; }
- inline static ConstantSInt *CastToInt (const Constant *V) { return 0; }
- inline static ConstantUInt *CastToUInt (const Constant *V) { return 0; }
- inline static ConstantSInt *CastToLong (const Constant *V) { return 0; }
- inline static ConstantUInt *CastToULong (const Constant *V) { return 0; }
- inline static ConstantFP *CastToFloat (const Constant *V) { return 0; }
- inline static ConstantFP *CastToDouble(const Constant *V) { return 0; }
- inline static ConstantPointer *CastToPointer(const Constant *,
- const PointerType *) {return 0;}
+ static ConstantBool *CastToBool (const Constant *V) { return 0; }
+ static ConstantSInt *CastToSByte (const Constant *V) { return 0; }
+ static ConstantUInt *CastToUByte (const Constant *V) { return 0; }
+ static ConstantSInt *CastToShort (const Constant *V) { return 0; }
+ static ConstantUInt *CastToUShort(const Constant *V) { return 0; }
+ static ConstantSInt *CastToInt (const Constant *V) { return 0; }
+ static ConstantUInt *CastToUInt (const Constant *V) { return 0; }
+ static ConstantSInt *CastToLong (const Constant *V) { return 0; }
+ static ConstantUInt *CastToULong (const Constant *V) { return 0; }
+ static ConstantFP *CastToFloat (const Constant *V) { return 0; }
+ static ConstantFP *CastToDouble(const Constant *V) { return 0; }
+ static Constant *CastToPointer(const Constant *,
+ const PointerType *) {return 0;}
};
//
struct BoolRules : public TemplateRules<ConstantBool, BoolRules> {
- inline static Constant *Not(const ConstantBool *V) {
- return ConstantBool::get(!V->getValue());
+ static ConstantBool *LessThan(const ConstantBool *V1, const ConstantBool *V2){
+ return ConstantBool::get(V1->getValue() < V2->getValue());
+ }
+
+ static Constant *And(const ConstantBool *V1, const ConstantBool *V2) {
+ return ConstantBool::get(V1->getValue() & V2->getValue());
}
- inline static Constant *Or(const ConstantBool *V1,
- const ConstantBool *V2) {
+ static Constant *Or(const ConstantBool *V1, const ConstantBool *V2) {
return ConstantBool::get(V1->getValue() | V2->getValue());
}
- inline static Constant *And(const ConstantBool *V1,
- const ConstantBool *V2) {
- return ConstantBool::get(V1->getValue() & V2->getValue());
+ static Constant *Xor(const ConstantBool *V1, const ConstantBool *V2) {
+ return ConstantBool::get(V1->getValue() ^ V2->getValue());
}
+
+ // Casting operators. ick
+#define DEF_CAST(TYPE, CLASS, CTYPE) \
+ static CLASS *CastTo##TYPE (const ConstantBool *V) { \
+ return CLASS::get(Type::TYPE##Ty, (CTYPE)(bool)V->getValue()); \
+ }
+
+ DEF_CAST(Bool , ConstantBool, bool)
+ DEF_CAST(SByte , ConstantSInt, signed char)
+ DEF_CAST(UByte , ConstantUInt, unsigned char)
+ DEF_CAST(Short , ConstantSInt, signed short)
+ DEF_CAST(UShort, ConstantUInt, unsigned short)
+ DEF_CAST(Int , ConstantSInt, signed int)
+ DEF_CAST(UInt , ConstantUInt, unsigned int)
+ DEF_CAST(Long , ConstantSInt, int64_t)
+ DEF_CAST(ULong , ConstantUInt, uint64_t)
+ DEF_CAST(Float , ConstantFP , float)
+ DEF_CAST(Double, ConstantFP , double)
+#undef DEF_CAST
};
// PointerRules provides a concrete base class of ConstRules for pointer types
//
struct PointerRules : public TemplateRules<ConstantPointer, PointerRules> {
- inline static ConstantBool *CastToBool (const Constant *V) {
+ static ConstantBool *CastToBool (const Constant *V) {
if (V->isNullValue()) return ConstantBool::False;
return 0; // Can't const prop other types of pointers
}
- inline static ConstantSInt *CastToSByte (const Constant *V) {
+ static ConstantSInt *CastToSByte (const Constant *V) {
if (V->isNullValue()) return ConstantSInt::get(Type::SByteTy, 0);
return 0; // Can't const prop other types of pointers
}
- inline static ConstantUInt *CastToUByte (const Constant *V) {
+ static ConstantUInt *CastToUByte (const Constant *V) {
if (V->isNullValue()) return ConstantUInt::get(Type::UByteTy, 0);
return 0; // Can't const prop other types of pointers
}
- inline static ConstantSInt *CastToShort (const Constant *V) {
+ static ConstantSInt *CastToShort (const Constant *V) {
if (V->isNullValue()) return ConstantSInt::get(Type::ShortTy, 0);
return 0; // Can't const prop other types of pointers
}
- inline static ConstantUInt *CastToUShort(const Constant *V) {
+ static ConstantUInt *CastToUShort(const Constant *V) {
if (V->isNullValue()) return ConstantUInt::get(Type::UShortTy, 0);
return 0; // Can't const prop other types of pointers
}
- inline static ConstantSInt *CastToInt (const Constant *V) {
+ static ConstantSInt *CastToInt (const Constant *V) {
if (V->isNullValue()) return ConstantSInt::get(Type::IntTy, 0);
return 0; // Can't const prop other types of pointers
}
- inline static ConstantUInt *CastToUInt (const Constant *V) {
+ static ConstantUInt *CastToUInt (const Constant *V) {
if (V->isNullValue()) return ConstantUInt::get(Type::UIntTy, 0);
return 0; // Can't const prop other types of pointers
}
- inline static ConstantSInt *CastToLong (const Constant *V) {
+ static ConstantSInt *CastToLong (const Constant *V) {
if (V->isNullValue()) return ConstantSInt::get(Type::LongTy, 0);
return 0; // Can't const prop other types of pointers
}
- inline static ConstantUInt *CastToULong (const Constant *V) {
+ static ConstantUInt *CastToULong (const Constant *V) {
if (V->isNullValue()) return ConstantUInt::get(Type::ULongTy, 0);
return 0; // Can't const prop other types of pointers
}
- inline static ConstantFP *CastToFloat (const Constant *V) {
+ static ConstantFP *CastToFloat (const Constant *V) {
if (V->isNullValue()) return ConstantFP::get(Type::FloatTy, 0);
return 0; // Can't const prop other types of pointers
}
- inline static ConstantFP *CastToDouble(const Constant *V) {
+ static ConstantFP *CastToDouble(const Constant *V) {
if (V->isNullValue()) return ConstantFP::get(Type::DoubleTy, 0);
return 0; // Can't const prop other types of pointers
}
- inline static ConstantPointer *CastToPointer(const ConstantPointer *V,
- const PointerType *PTy) {
+ static Constant *CastToPointer(const ConstantPointer *V,
+ const PointerType *PTy) {
+ if (V->getType() == PTy)
+ return const_cast<ConstantPointer*>(V); // Allow cast %PTy %ptr to %PTy
if (V->isNullValue())
return ConstantPointerNull::get(PTy);
return 0; // Can't const prop other types of pointers
// different types. This allows the C++ compiler to automatically generate our
// constant handling operations in a typesafe and accurate manner.
//
-template<class ConstantClass, class BuiltinType, Type **Ty>
-struct DirectRules
- : public TemplateRules<ConstantClass,
- DirectRules<ConstantClass, BuiltinType, Ty> > {
-
- inline static Constant *Not(const ConstantClass *V) {
- return ConstantClass::get(*Ty, !(BuiltinType)V->getValue());;
+template<class ConstantClass, class BuiltinType, Type **Ty, class SuperClass>
+struct DirectRules : public TemplateRules<ConstantClass, SuperClass> {
+ static Constant *Add(const ConstantClass *V1, const ConstantClass *V2) {
+ BuiltinType R = (BuiltinType)V1->getValue() + (BuiltinType)V2->getValue();
+ return ConstantClass::get(*Ty, R);
}
- inline static Constant *Add(const ConstantClass *V1,
- const ConstantClass *V2) {
- BuiltinType Result = (BuiltinType)V1->getValue() +
- (BuiltinType)V2->getValue();
- return ConstantClass::get(*Ty, Result);
+ static Constant *Sub(const ConstantClass *V1, const ConstantClass *V2) {
+ BuiltinType R = (BuiltinType)V1->getValue() - (BuiltinType)V2->getValue();
+ return ConstantClass::get(*Ty, R);
}
- inline static Constant *Sub(const ConstantClass *V1,
- const ConstantClass *V2) {
- BuiltinType Result = (BuiltinType)V1->getValue() -
- (BuiltinType)V2->getValue();
- return ConstantClass::get(*Ty, Result);
+ static Constant *Mul(const ConstantClass *V1, const ConstantClass *V2) {
+ BuiltinType R = (BuiltinType)V1->getValue() * (BuiltinType)V2->getValue();
+ return ConstantClass::get(*Ty, R);
}
- inline static Constant *Mul(const ConstantClass *V1,
- const ConstantClass *V2) {
- BuiltinType Result = (BuiltinType)V1->getValue() *
- (BuiltinType)V2->getValue();
- return ConstantClass::get(*Ty, Result);
+ static Constant *Div(const ConstantClass *V1, const ConstantClass *V2) {
+ if (V2->isNullValue()) return 0;
+ BuiltinType R = (BuiltinType)V1->getValue() / (BuiltinType)V2->getValue();
+ return ConstantClass::get(*Ty, R);
}
- inline static ConstantBool *LessThan(const ConstantClass *V1,
- const ConstantClass *V2) {
- bool Result = (BuiltinType)V1->getValue() < (BuiltinType)V2->getValue();
- return ConstantBool::get(Result);
+ static ConstantBool *LessThan(const ConstantClass *V1,
+ const ConstantClass *V2) {
+ bool R = (BuiltinType)V1->getValue() < (BuiltinType)V2->getValue();
+ return ConstantBool::get(R);
}
- inline static ConstantPointer *CastToPointer(const ConstantClass *V,
- const PointerType *PTy) {
+ static Constant *CastToPointer(const ConstantClass *V,
+ const PointerType *PTy) {
if (V->isNullValue()) // Is it a FP or Integral null value?
return ConstantPointerNull::get(PTy);
return 0; // Can't const prop other types of pointers
// Casting operators. ick
#define DEF_CAST(TYPE, CLASS, CTYPE) \
- inline static CLASS *CastTo##TYPE (const ConstantClass *V) { \
+ static CLASS *CastTo##TYPE (const ConstantClass *V) { \
return CLASS::get(Type::TYPE##Ty, (CTYPE)(BuiltinType)V->getValue()); \
}
#undef DEF_CAST
};
+
+//===----------------------------------------------------------------------===//
+// DirectIntRules Class
+//===----------------------------------------------------------------------===//
+//
+// DirectIntRules provides implementations of functions that are valid on
+// integer types, but not all types in general.
+//
+template <class ConstantClass, class BuiltinType, Type **Ty>
+struct DirectIntRules
+ : public DirectRules<ConstantClass, BuiltinType, Ty,
+ DirectIntRules<ConstantClass, BuiltinType, Ty> > {
+
+ static Constant *Div(const ConstantClass *V1, const ConstantClass *V2) {
+ if (V2->isNullValue()) return 0;
+ if (V2->isAllOnesValue() && // MIN_INT / -1
+ (BuiltinType)V1->getValue() == -(BuiltinType)V1->getValue())
+ return 0;
+ BuiltinType R = (BuiltinType)V1->getValue() / (BuiltinType)V2->getValue();
+ return ConstantClass::get(*Ty, R);
+ }
+
+ static Constant *Rem(const ConstantClass *V1,
+ const ConstantClass *V2) {
+ if (V2->isNullValue()) return 0; // X / 0
+ if (V2->isAllOnesValue() && // MIN_INT / -1
+ (BuiltinType)V1->getValue() == -(BuiltinType)V1->getValue())
+ return 0;
+ BuiltinType R = (BuiltinType)V1->getValue() % (BuiltinType)V2->getValue();
+ return ConstantClass::get(*Ty, R);
+ }
+
+ static Constant *And(const ConstantClass *V1, const ConstantClass *V2) {
+ BuiltinType R = (BuiltinType)V1->getValue() & (BuiltinType)V2->getValue();
+ return ConstantClass::get(*Ty, R);
+ }
+ static Constant *Or(const ConstantClass *V1, const ConstantClass *V2) {
+ BuiltinType R = (BuiltinType)V1->getValue() | (BuiltinType)V2->getValue();
+ return ConstantClass::get(*Ty, R);
+ }
+ static Constant *Xor(const ConstantClass *V1, const ConstantClass *V2) {
+ BuiltinType R = (BuiltinType)V1->getValue() ^ (BuiltinType)V2->getValue();
+ return ConstantClass::get(*Ty, R);
+ }
+
+ static Constant *Shl(const ConstantClass *V1, const ConstantClass *V2) {
+ BuiltinType R = (BuiltinType)V1->getValue() << (BuiltinType)V2->getValue();
+ return ConstantClass::get(*Ty, R);
+ }
+
+ static Constant *Shr(const ConstantClass *V1, const ConstantClass *V2) {
+ BuiltinType R = (BuiltinType)V1->getValue() >> (BuiltinType)V2->getValue();
+ return ConstantClass::get(*Ty, R);
+ }
+};
+
+
+//===----------------------------------------------------------------------===//
+// DirectFPRules Class
+//===----------------------------------------------------------------------===//
+//
+// DirectFPRules provides implementations of functions that are valid on
+// floating point types, but not all types in general.
+//
+template <class ConstantClass, class BuiltinType, Type **Ty>
+struct DirectFPRules
+ : public DirectRules<ConstantClass, BuiltinType, Ty,
+ DirectFPRules<ConstantClass, BuiltinType, Ty> > {
+ static Constant *Rem(const ConstantClass *V1, const ConstantClass *V2) {
+ if (V2->isNullValue()) return 0;
+ BuiltinType Result = std::fmod((BuiltinType)V1->getValue(),
+ (BuiltinType)V2->getValue());
+ return ConstantClass::get(*Ty, Result);
+ }
+};
+
//===----------------------------------------------------------------------===//
// DirectRules Subclasses
//===----------------------------------------------------------------------===//
case Type::BoolTyID: return new BoolRules();
case Type::PointerTyID: return new PointerRules();
case Type::SByteTyID:
- return new DirectRules<ConstantSInt, signed char , &Type::SByteTy>();
+ return new DirectIntRules<ConstantSInt, signed char , &Type::SByteTy>();
case Type::UByteTyID:
- return new DirectRules<ConstantUInt, unsigned char , &Type::UByteTy>();
+ return new DirectIntRules<ConstantUInt, unsigned char , &Type::UByteTy>();
case Type::ShortTyID:
- return new DirectRules<ConstantSInt, signed short, &Type::ShortTy>();
+ return new DirectIntRules<ConstantSInt, signed short, &Type::ShortTy>();
case Type::UShortTyID:
- return new DirectRules<ConstantUInt, unsigned short, &Type::UShortTy>();
+ return new DirectIntRules<ConstantUInt, unsigned short, &Type::UShortTy>();
case Type::IntTyID:
- return new DirectRules<ConstantSInt, signed int , &Type::IntTy>();
+ return new DirectIntRules<ConstantSInt, signed int , &Type::IntTy>();
case Type::UIntTyID:
- return new DirectRules<ConstantUInt, unsigned int , &Type::UIntTy>();
+ return new DirectIntRules<ConstantUInt, unsigned int , &Type::UIntTy>();
case Type::LongTyID:
- return new DirectRules<ConstantSInt, int64_t , &Type::LongTy>();
+ return new DirectIntRules<ConstantSInt, int64_t , &Type::LongTy>();
case Type::ULongTyID:
- return new DirectRules<ConstantUInt, uint64_t , &Type::ULongTy>();
+ return new DirectIntRules<ConstantUInt, uint64_t , &Type::ULongTy>();
case Type::FloatTyID:
- return new DirectRules<ConstantFP , float , &Type::FloatTy>();
+ return new DirectFPRules<ConstantFP , float , &Type::FloatTy>();
case Type::DoubleTyID:
- return new DirectRules<ConstantFP , double , &Type::DoubleTy>();
+ return new DirectFPRules<ConstantFP , double , &Type::DoubleTy>();
default:
return new EmptyRules();
}
}
+
+ConstRules *ConstRules::getConstantExprRules() {
+ static EmptyRules CERules;
+ return &CERules;
+}
projects / oota-llvm.git / blobdiff