828 ConstantRange ConstantRange::zeroExtend(uint32_t DstTySize) const {  in zeroExtend()
829   if (isEmptySet()) return getEmpty(DstTySize);  in zeroExtend()
832   assert(SrcTySize < DstTySize && "Not a value extension");  in zeroExtend()
835     APInt LowerExt(DstTySize, 0);  in zeroExtend()
837       LowerExt = Lower.zext(DstTySize);  in zeroExtend()
839                          APInt::getOneBitSet(DstTySize, SrcTySize));  in zeroExtend()
842   return ConstantRange(Lower.zext(DstTySize), Upper.zext(DstTySize));  in zeroExtend()
845 ConstantRange ConstantRange::signExtend(uint32_t DstTySize) const {  in signExtend()
846   if (isEmptySet()) return getEmpty(DstTySize);  in signExtend()
849   assert(SrcTySize < DstTySize && "Not a value extension");  in signExtend()
853     return ConstantRange(Lower.sext(DstTySize), Upper.zext(DstTySize));  in signExtend()
856     return ConstantRange(APInt::getHighBitsSet(DstTySize,DstTySize-SrcTySize+1),  in signExtend()
857                          APInt::getLowBitsSet(DstTySize, SrcTySize-1) + 1);  in signExtend()
860   return ConstantRange(Lower.sext(DstTySize), Upper.sext(DstTySize));  in signExtend()
863 ConstantRange ConstantRange::truncate(uint32_t DstTySize) const {  in truncate()
864   assert(getBitWidth() > DstTySize && "Not a value truncation");  in truncate()
866     return getEmpty(DstTySize);  in truncate()
868     return getFull(DstTySize);  in truncate()
871   ConstantRange Union(DstTySize, /*isFullSet=*/false);  in truncate()
879     if (Upper.getActiveBits() > DstTySize || Upper.countr_one() == DstTySize)  in truncate()
880       return getFull(DstTySize);  in truncate()
882     Union = ConstantRange(APInt::getMaxValue(DstTySize),Upper.trunc(DstTySize));  in truncate()
892   if (LowerDiv.getActiveBits() > DstTySize) {  in truncate()
894     APInt Adjust = LowerDiv & APInt::getBitsSetFrom(getBitWidth(), DstTySize);  in truncate()
900   if (UpperDivWidth <= DstTySize)  in truncate()
901     return ConstantRange(LowerDiv.trunc(DstTySize),  in truncate()
902                          UpperDiv.trunc(DstTySize)).unionWith(Union);  in truncate()
905   if (UpperDivWidth == DstTySize + 1) {  in truncate()
907     UpperDiv.clearBit(DstTySize);  in truncate()
909       return ConstantRange(LowerDiv.trunc(DstTySize),  in truncate()
910                            UpperDiv.trunc(DstTySize)).unionWith(Union);  in truncate()
913   return getFull(DstTySize);  in truncate()
916 ConstantRange ConstantRange::zextOrTrunc(uint32_t DstTySize) const {  in zextOrTrunc()
918   if (SrcTySize > DstTySize)  in zextOrTrunc()
919     return truncate(DstTySize);  in zextOrTrunc()
920   if (SrcTySize < DstTySize)  in zextOrTrunc()
921     return zeroExtend(DstTySize);  in zextOrTrunc()
925 ConstantRange ConstantRange::sextOrTrunc(uint32_t DstTySize) const {  in sextOrTrunc()
927   if (SrcTySize > DstTySize)  in sextOrTrunc()
928     return truncate(DstTySize);  in sextOrTrunc()
929   if (SrcTySize < DstTySize)  in sextOrTrunc()
930     return signExtend(DstTySize);  in sextOrTrunc()