Instruction *FoldShiftByConstant(Value *Op0, ConstantInt *Op1,
BinaryOperator &I);
Instruction *commonCastTransforms(CastInst &CI);
- Instruction *commonIntCastTransforms(CastInst &CI);
Instruction *commonPointerCastTransforms(CastInst &CI);
Instruction *visitTrunc(TruncInst &CI);
Instruction *visitZExt(ZExtInst &CI);
Instruction *visitInstruction(Instruction &I) { return 0; }
private:
+ bool ShouldChangeType(const Type *From, const Type *To) const;
Value *dyn_castNegVal(Value *V) const;
+ Value *dyn_castFNegVal(Value *V) const;
+ const Type *FindElementAtOffset(const Type *Ty, int64_t Offset,
+ SmallVectorImpl<Value*> &NewIndices);
+ Instruction *FoldOpIntoSelect(Instruction &Op, SelectInst *SI);
+
+ /// ValueRequiresCast - Return true if the cast from "V to Ty" actually
+ /// results in any code being generated. It does not require codegen if V is
+ /// simple enough or if the cast can be folded into other casts.
+ bool ValueRequiresCast(Instruction::CastOps opcode,const Value *V,
+ const Type *Ty);
Instruction *visitCallSite(CallSite CS);
bool transformConstExprCastCall(CallSite CS);
Value *EvaluateInDifferentType(Value *V, const Type *Ty, bool isSigned);
- bool CanEvaluateInDifferentType(Value *V, const Type *Ty,
- unsigned CastOpc, int &NumCastsRemoved);
unsigned GetOrEnforceKnownAlignment(Value *V,
unsigned PrefAlign = 0);