return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
}
+CastInst *CastInst::CreateBitOrPointerCast(Value *S, Type *Ty,
+ const Twine &Name,
+ Instruction *InsertBefore) {
+ if (S->getType()->isPointerTy() && Ty->isIntegerTy())
+ return Create(Instruction::PtrToInt, S, Ty, Name, InsertBefore);
+ if (S->getType()->isIntegerTy() && Ty->isPointerTy())
+ return Create(Instruction::IntToPtr, S, Ty, Name, InsertBefore);
+
+ return Create(Instruction::BitCast, S, Ty, Name, InsertBefore);
+}
+
CastInst *CastInst::CreateIntegerCast(Value *C, Type *Ty,
bool isSigned, const Twine &Name,
Instruction *InsertBefore) {
return true;
}
+bool CastInst::isBitOrNoopPointerCastable(Type *SrcTy, Type *DestTy,
+ const DataLayout *DL) {
+ if (auto *PtrTy = dyn_cast<PointerType>(SrcTy))
+ if (auto *IntTy = dyn_cast<IntegerType>(DestTy))
+ return DL && IntTy->getBitWidth() == DL->getPointerTypeSizeInBits(PtrTy);
+ if (auto *PtrTy = dyn_cast<PointerType>(DestTy))
+ if (auto *IntTy = dyn_cast<IntegerType>(SrcTy))
+ return DL && IntTy->getBitWidth() == DL->getPointerTypeSizeInBits(PtrTy);
+
+ return isBitCastable(SrcTy, DestTy);
+}
+
// Provide a way to get a "cast" where the cast opcode is inferred from the
// types and size of the operand. This, basically, is a parallel of the
// logic in the castIsValid function below. This axiom should hold: