17 class Truncation final {
20   static Truncation None() {  in None()
21     return Truncation(TruncationKind::kNone, kIdentifyZeros);  in None()
23   static Truncation Bool() {  in Bool()
24     return Truncation(TruncationKind::kBool, kIdentifyZeros);  in Bool()
26   static Truncation Word32() {  in Word32()
27     return Truncation(TruncationKind::kWord32, kIdentifyZeros);  in Word32()
29   static Truncation Word64() {  in Word64()
30     return Truncation(TruncationKind::kWord64, kIdentifyZeros);  in Word64()
32   static Truncation Float64(IdentifyZeros identify_zeros = kDistinguishZeros) {
33     return Truncation(TruncationKind::kFloat64, identify_zeros);
35   static Truncation Any(IdentifyZeros identify_zeros = kDistinguishZeros) {
36     return Truncation(TruncationKind::kAny, identify_zeros);
39   static Truncation Generalize(Truncation t1, Truncation t2) {  in Generalize()
40     return Truncation(  in Generalize()
69   bool operator==(Truncation other) const {
72   bool operator!=(Truncation other) const { return !(*this == other); }
76   bool IsLessGeneralThan(Truncation other) {  in IsLessGeneralThan()
93   explicit Truncation(TruncationKind kind, IdentifyZeros identify_zeros)  in Truncation()  function
155   UseInfo(MachineRepresentation representation, Truncation truncation,
163     return UseInfo(MachineRepresentation::kWord32, Truncation::Word32());  in TruncatingWord32()
166     return UseInfo(MachineRepresentation::kWord64, Truncation::Word64());  in TruncatingWord64()
169     return UseInfo(MachineRepresentation::kBit, Truncation::Bool());  in Bool()
172     return UseInfo(MachineRepresentation::kFloat32, Truncation::Any());  in Float32()
175     return UseInfo(MachineRepresentation::kFloat64, Truncation::Float64());  in TruncatingFloat64()
181     return UseInfo(MachineRepresentation::kTagged, Truncation::Any());  in AnyTagged()
184     return UseInfo(MachineRepresentation::kTaggedSigned, Truncation::Any());  in TaggedSigned()
187     return UseInfo(MachineRepresentation::kTaggedPointer, Truncation::Any());  in TaggedPointer()
192     return UseInfo(MachineRepresentation::kTaggedPointer, Truncation::Any(),  in CheckedHeapObjectAsTaggedPointer()
197     return UseInfo(MachineRepresentation::kTaggedSigned, Truncation::Any(),  in CheckedSignedSmallAsTaggedSigned()
203                    Truncation::Any(identify_zeros), TypeCheckKind::kSignedSmall,  in CheckedSignedSmallAsWord32()
209                    Truncation::Any(identify_zeros), TypeCheckKind::kSigned32,  in CheckedSigned32AsWord32()
213     return UseInfo(MachineRepresentation::kFloat64, Truncation::Any(),  in CheckedNumberAsFloat64()
217     return UseInfo(MachineRepresentation::kWord32, Truncation::Word32(),  in CheckedNumberAsWord32()
222     return UseInfo(MachineRepresentation::kFloat64, Truncation::Any(),  in CheckedNumberOrOddballAsFloat64()
227     return UseInfo(MachineRepresentation::kWord32, Truncation::Word32(),  in CheckedNumberOrOddballAsWord32()
233     return UseInfo(MachineRepresentation::kNone, Truncation::Any());  in Any()
236     return UseInfo(MachineRepresentation::kNone, Truncation::Bool());  in AnyTruncatingToBool()
241     return UseInfo(MachineRepresentation::kNone, Truncation::None());  in None()
245   Truncation truncation() const { return truncation_; }  in truncation()
256   Truncation truncation_;
314                                    Type output_type, Truncation truncation);
317                                     Type output_type, Truncation truncation);