class Instruction;
class Value;
class TargetData;
+
+ /// SimplifyAddInst - Given operands for an Add, see if we can
+ /// fold the result. If not, this returns null.
+ Value *SimplifyAddInst(Value *LHS, Value *RHS, bool isNSW, bool isNUW,
+ const TargetData *TD = 0);
/// SimplifyAndInst - Given operands for an And, see if we can
/// fold the result. If not, this returns null.
const TargetData *TD = 0);
+ /// SimplifyGEPInst - Given operands for an GetElementPtrInst, see if we can
+ /// fold the result. If not, this returns null.
+ Value *SimplifyGEPInst(Value * const *Ops, unsigned NumOps,
+ const TargetData *TD = 0);
+
//=== Helper functions for higher up the class hierarchy.
/// instruction. If not, this returns null.
Value *SimplifyInstruction(Instruction *I, const TargetData *TD = 0);
+
+ /// ReplaceAndSimplifyAllUses - Perform From->replaceAllUsesWith(To) and then
+ /// delete the From instruction. In addition to a basic RAUW, this does a
+ /// recursive simplification of the updated instructions. This catches
+ /// things where one simplification exposes other opportunities. This only
+ /// simplifies and deletes scalar operations, it does not change the CFG.
+ ///
+ void ReplaceAndSimplifyAllUses(Instruction *From, Value *To,
+ const TargetData *TD = 0);
} // end namespace llvm
#endif