1343 template <typename ExtendOp> struct ExtendOpTraits {  struct
1356 struct ExtendOpTraits<SCEVSignExtendExpr> : public ExtendOpTraitsBase {  struct
1368 const ExtendOpTraitsBase::GetExtendExprTy ExtendOpTraits<
1372 struct ExtendOpTraits<SCEVZeroExtendExpr> : public ExtendOpTraitsBase {  struct
1384 const ExtendOpTraitsBase::GetExtendExprTy ExtendOpTraits<
1399   auto WrapType = ExtendOpTraits<ExtendOpTy>::WrapType;  in getPreStartForExtend()
1400   auto GetExtendExpr = ExtendOpTraits<ExtendOpTy>::GetExtendExpr;  in getPreStartForExtend()
1460       ExtendOpTraits<ExtendOpTy>::getOverflowLimitForStep(Step, &Pred, SE);  in getPreStartForExtend()
1474   auto GetExtendExpr = ExtendOpTraits<ExtendOpTy>::GetExtendExpr;  in getExtendAddRecStart()
1521   auto WrapType = ExtendOpTraits<ExtendOpTy>::WrapType;  in proveNoWrapByVaryingStart()
1550       const SCEV *Limit = ExtendOpTraits<ExtendOpTy>::getOverflowLimitForStep(  in proveNoWrapByVaryingStart()