/// that want to combine
struct TargetLoweringOpt {
SelectionDAG &DAG;
+ bool AfterLegalize;
SDOperand Old;
SDOperand New;
- explicit TargetLoweringOpt(SelectionDAG &InDAG) : DAG(InDAG) {}
+ explicit TargetLoweringOpt(SelectionDAG &InDAG, bool afterLegalize)
+ : DAG(InDAG), AfterLegalize(afterLegalize) {}
bool CombineTo(SDOperand O, SDOperand N) {
Old = O;
/// it can be simplified or if things it uses can be simplified by bit
/// propagation. If so, return true.
bool SimplifyDemandedBits(SDOperand Op, uint64_t Demanded = ~0ULL) {
- TargetLowering::TargetLoweringOpt TLO(DAG);
+ TargetLowering::TargetLoweringOpt TLO(DAG, AfterLegalize);
uint64_t KnownZero, KnownOne;
Demanded &= MVT::getIntVTBitMask(Op.getValueType());
if (!TLI.SimplifyDemandedBits(Op, Demanded, KnownZero, KnownOne, TLO))