lib/AST/Expr.cpp

143   if (const UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) {
144     switch (UO->getOpcode()) {
146       return UO->getSubExpr()->isKnownToHaveBooleanValue(Semantic);
1423     } else if (UnaryOperator *UO = dyn_cast<UnaryOperator>(CEE)) {
1424       if (UO->getOpcode() == UO_Deref || UO->getOpcode() == UO_AddrOf ||
1425           UO->getOpcode() == UO_Plus) {
1426         CEE = UO->getSubExpr()->IgnoreParenImpCasts();
2360   if (auto *UO = dyn_cast<UnaryOperator>(E))
2361     if (UO->getOpcode() == UO_Deref)
2428     const UnaryOperator *UO = cast<UnaryOperator>(this);
2430     switch (UO->getOpcode()) {
2449       if (Ctx.getCanonicalType(UO->getSubExpr()->getType())
2454       return UO->getSubExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
2457     Loc = UO->getOperatorLoc();
2458     R1 = UO->getSubExpr()->getSourceRange();
3608   if (auto UO = dyn_cast<UnaryOperator>(this))
3609     return UO->getFPFeaturesInEffect(LO);