[APInt] Remove all uses of zextOrSelf, sextOrSelf and truncOrSelf

[foad]

Summary

Most clients only used these methods because they wanted to be able to
extend or truncate to the same bit width (which is a no-op). Now that
the standard zext, sext and trunc allow this, there is no reason to use
the OrSelf versions.

The OrSelf versions additionally have the strange behaviour of allowing
extending to a *smaller* width, or truncating to a *larger* width, which
are also treated as no-ops. A small amount of client code relied on this
(ConstantRange::castOp and MicrosoftCXXNameMangler::mangleNumber) and
needed rewriting.

[efriedma]

llvm/lib/IR/ConstantRange.cpp

724

Making the bitwidth of the result here not equal to ResultBitWidth seems suspect.

I think there should just be an if (ResultBitWidth < BW) return getFull(ResultBitWidth); here. Then a simple conversion just works.

[efriedma]

llvm/lib/IR/ConstantRange.cpp

724

Actually, looking at D27294 again, maybe it is actually making the result bitwidth intentionally inflate like this.

This could use a comment explaining what it's doing, in any case.

[lattner]

nice cleanup!

llvm/lib/Analysis/ConstantFolding.cpp

2884

I think this can be a zext given the top bit will be zero

llvm/lib/Target/AArch64/GISel/AArch64PostLegalizerCombiner.cpp

138

plz drop the extraneous 'const' while here.

llvm/lib/Target/Hexagon/HexagonConstPropagation.cpp

1220

Here too :)

[foad]

Address some review comments.

[foad]

llvm/lib/Analysis/ConstantFolding.cpp

2884

Sure the first one could be zext, but the second one can't be, so it feels conceptually simpler (to me) to keep them both as sext.

llvm/lib/IR/ConstantRange.cpp

724

I agree it could use a comment but I don't feel qualified to write it - I am just trying to preserve the current behaviour.

[foad]

llvm/lib/IR/ConstantRange.cpp

724

@efriedma do you have any objection to the patch as-is?

[reames]

Coming into this late, but I'd have preferred to see this separated into at least two pieces. One for each "non-obvious" adjustment, and one final one which just did the replace on the renaming sites. This differs from feedback from other reviewers above, so don't feel bound by this in any way. Just expressing the general preference.

[efriedma]

llvm/lib/IR/ConstantRange.cpp

724

No objection.

[lattner]

llvm/lib/Analysis/ConstantFolding.cpp

2884

likewise, I'm fine with this either way. zext is slightly more "Strength reduced" than sext, but it doesn't matter.

clang/lib/AST/ExprConstant.cpp

static bool getBytesReturnedByAllocSizeCall(const ASTContext &Ctx,
 
   auto EvaluateAsSizeT = [&](const Expr *E, APSInt &Into) {
     Expr::EvalResult ExprResult;
     if (!E->EvaluateAsInt(ExprResult, Ctx, Expr::SE_AllowSideEffects))
       return false;
     Into = ExprResult.Val.getInt();
     if (Into.isNegative() || !Into.isIntN(BitsInSizeT))
       return false;
-    Into = Into.zextOrSelf(BitsInSizeT);
+    Into = Into.zext(BitsInSizeT);
     return true;
   };
 
   APSInt SizeOfElem;
   if (!EvaluateAsSizeT(Call->getArg(SizeArgNo), SizeOfElem))
     return false;
 
   if (!AllocSize->getNumElemsParam().isValid()) {
if (Optional<const Expr *> ArraySize = E->getArraySize()) {
     } else if (auto *CCE = dyn_cast<CXXConstructExpr>(Init)) {
       ResizedArrayCCE = CCE;
     } else {
       auto *CAT = Info.Ctx.getAsConstantArrayType(Init->getType());
       assert(CAT && "unexpected type for array initializer");
 
       unsigned Bits =
           std::max(CAT->getSize().getBitWidth(), ArrayBound.getBitWidth());
-      llvm::APInt InitBound = CAT->getSize().zextOrSelf(Bits);
-      llvm::APInt AllocBound = ArrayBound.zextOrSelf(Bits);
+      llvm::APInt InitBound = CAT->getSize().zext(Bits);
+      llvm::APInt AllocBound = ArrayBound.zext(Bits);
       if (InitBound.ugt(AllocBound)) {
         if (IsNothrow)
           return ZeroInitialization(E);
 
         Info.FFDiag(*ArraySize, diag::note_constexpr_new_too_small)
             << toString(AllocBound, 10, /*Signed=*/false)
             << toString(InitBound, 10, /*Signed=*/false)
             << (*ArraySize)->getSourceRange();
case CK_BitCast: {
     if (EltTy->isRealFloatingType()) {
       const llvm::fltSemantics &Sem = Info.Ctx.getFloatTypeSemantics(EltTy);
       unsigned FloatEltSize = EltSize;
       if (&Sem == &APFloat::x87DoubleExtended())
         FloatEltSize = 80;
       for (unsigned i = 0; i < NElts; i++) {
         llvm::APInt Elt;
         if (BigEndian)
-          Elt = SValInt.rotl(i*EltSize+FloatEltSize).truncOrSelf(FloatEltSize);
+          Elt = SValInt.rotl(i * EltSize + FloatEltSize).trunc(FloatEltSize);
         else
-          Elt = SValInt.rotr(i*EltSize).truncOrSelf(FloatEltSize);
+          Elt = SValInt.rotr(i * EltSize).trunc(FloatEltSize);
         Elts.push_back(APValue(APFloat(Sem, Elt)));
       }
     } else if (EltTy->isIntegerType()) {
       for (unsigned i = 0; i < NElts; i++) {
         llvm::APInt Elt;
         if (BigEndian)
           Elt = SValInt.rotl(i*EltSize+EltSize).zextOrTrunc(EltSize);
         else

clang/lib/AST/MicrosoftMangle.cpp

void MicrosoftCXXNameMangler::mangleNumber(int64_t Number) {
   mangleNumber(llvm::APSInt(llvm::APInt(64, Number), /*IsUnsigned*/false));
 }
 
 void MicrosoftCXXNameMangler::mangleNumber(llvm::APSInt Number) {
   // MSVC never mangles any integer wider than 64 bits. In general it appears
   // to convert every integer to signed 64 bit before mangling (including
   // unsigned 64 bit values). Do the same, but preserve bits beyond the bottom
   // 64.
-  llvm::APInt Value =
-      Number.isSigned() ? Number.sextOrSelf(64) : Number.zextOrSelf(64);
+  unsigned Width = std::max(Number.getBitWidth(), 64U);
+  llvm::APInt Value = Number.extend(Width);
 
   // <non-negative integer> ::= A@              # when Number == 0
   //                        ::= <decimal digit> # when 1 <= Number <= 10
   //                        ::= <hex digit>+ @  # when Number >= 10
   //
   // <number>               ::= [?] <non-negative integer>
 
   if (Value.isNegative()) {

clang/lib/CodeGen/CGBuiltin.cpp

llvm::Value *UnsignedResult =
       EmitOverflowIntrinsic(CGF, llvm::Intrinsic::umul_with_overflow, AbsSigned,
                             Unsigned, UnsignedOverflow);
 
   llvm::Value *Overflow, *Result;
   if (ResultInfo.Signed) {
     // Signed overflow occurs if the result is greater than INT_MAX or lesser
     // than INT_MIN, i.e when |Result| > (INT_MAX + IsNegative).
     auto IntMax =
-        llvm::APInt::getSignedMaxValue(ResultInfo.Width).zextOrSelf(OpWidth);
+        llvm::APInt::getSignedMaxValue(ResultInfo.Width).zext(OpWidth);
     llvm::Value *MaxResult =
         CGF.Builder.CreateAdd(llvm::ConstantInt::get(OpTy, IntMax),
                               CGF.Builder.CreateZExt(IsNegative, OpTy));
     llvm::Value *SignedOverflow =
         CGF.Builder.CreateICmpUGT(UnsignedResult, MaxResult);
     Overflow = CGF.Builder.CreateOr(UnsignedOverflow, SignedOverflow);
 
     // Prepare the signed result (possibly by negating it).

clang/lib/Sema/SemaDecl.cpp

bool Sema::IsValueInFlagEnum(const EnumDecl *ED, const llvm::APInt &Val,
   auto R = FlagBitsCache.insert(std::make_pair(ED, llvm::APInt()));
   llvm::APInt &FlagBits = R.first->second;
 
   if (R.second) {
     for (auto *E : ED->enumerators()) {
       const auto &EVal = E->getInitVal();
       // Only single-bit enumerators introduce new flag values.
       if (EVal.isPowerOf2())
-        FlagBits = FlagBits.zextOrSelf(EVal.getBitWidth()) | EVal;
+        FlagBits = FlagBits.zext(EVal.getBitWidth()) | EVal;
     }
   }
 
   // A value is in a flag enum if either its bits are a subset of the enum's
   // flag bits (the first condition) or we are allowing masks and the same is
   // true of its complement (the second condition). When masks are allowed, we
   // allow the common idiom of ~(enum1 | enum2) to be a valid enum value.
   //

clang/lib/StaticAnalyzer/Core/LoopUnrolling.cpp

bool shouldCompletelyUnroll(const Stmt *LoopStmt, ASTContext &ASTCtx,
 
   const auto *CounterVarRef = Matches[0].getNodeAs<DeclRefExpr>("initVarRef");
   llvm::APInt BoundNum =
       Matches[0].getNodeAs<IntegerLiteral>("boundNum")->getValue();
   llvm::APInt InitNum =
       Matches[0].getNodeAs<IntegerLiteral>("initNum")->getValue();
   auto CondOp = Matches[0].getNodeAs<BinaryOperator>("conditionOperator");
   if (InitNum.getBitWidth() != BoundNum.getBitWidth()) {
-    InitNum = InitNum.zextOrSelf(BoundNum.getBitWidth());
-    BoundNum = BoundNum.zextOrSelf(InitNum.getBitWidth());
+    InitNum = InitNum.zext(BoundNum.getBitWidth());
+    BoundNum = BoundNum.zext(InitNum.getBitWidth());
   }
 
   if (CondOp->getOpcode() == BO_GE || CondOp->getOpcode() == BO_LE)
     maxStep = (BoundNum - InitNum + 1).abs().getZExtValue();
   else
     maxStep = (BoundNum - InitNum).abs().getZExtValue();
 
   // Check if the counter of the loop is not escaped before.

llvm/lib/Analysis/BasicAliasAnalysis.cpp

for (User::const_op_iterator I = GEPOp->op_begin() + 1, E = GEPOp->op_end();
       unsigned TruncBits = IndexSize < Width ? Width - IndexSize : 0;
       LinearExpression LE = GetLinearExpression(
           CastedValue(Index, 0, SExtBits, TruncBits), DL, 0, AC, DT);
 
       // Scale by the type size.
       unsigned TypeSize =
           DL.getTypeAllocSize(GTI.getIndexedType()).getFixedSize();
       LE = LE.mul(APInt(IndexSize, TypeSize), GEPOp->isInBounds());
-      Decomposed.Offset += LE.Offset.sextOrSelf(MaxIndexSize);
-      APInt Scale = LE.Scale.sextOrSelf(MaxIndexSize);
+      Decomposed.Offset += LE.Offset.sext(MaxIndexSize);
+      APInt Scale = LE.Scale.sext(MaxIndexSize);
 
       // If we already had an occurrence of this index variable, merge this
       // scale into it.  For example, we want to handle:
       //   A[x][x] -> x*16 + x*4 -> x*20
       // This also ensures that 'x' only appears in the index list once.
       for (unsigned i = 0, e = Decomposed.VarIndices.size(); i != e; ++i) {
         if (Decomposed.VarIndices[i].Val.V == LE.Val.V &&
             Decomposed.VarIndices[i].Val.hasSameCastsAs(LE.Val)) {

llvm/lib/Analysis/ConstantFolding.cpp

if (Element && isa<UndefValue>(Element)) {
       continue;
     }
 
     auto *ElementCI = dyn_cast_or_null<ConstantInt>(Element);
     if (!ElementCI)
       return ConstantExpr::getBitCast(C, DestTy);
 
     Result <<= BitShift;
-    Result |= ElementCI->getValue().zextOrSelf(Result.getBitWidth());
+    Result |= ElementCI->getValue().zext(Result.getBitWidth());
   }
 
   return nullptr;
 }
 
 /// Constant fold bitcast, symbolically evaluating it with DataLayout.
 /// This always returns a non-null constant, but it may be a
 /// ConstantExpr if unfoldable.
if (IntrinsicID == Intrinsic::smul_fix ||
     // about rounding should use a target hook for specifying how rounding
     // should be done, and provide their own folding to be consistent with
     // rounding. This is the same approach as used by
     // DAGTypeLegalizer::ExpandIntRes_MULFIX.
     unsigned Scale = cast<ConstantInt>(Operands[2])->getZExtValue();
     unsigned Width = C0->getBitWidth();
     assert(Scale < Width && "Illegal scale.");
     unsigned ExtendedWidth = Width * 2;
-    APInt Product = (C0->sextOrSelf(ExtendedWidth) *
-                     C1->sextOrSelf(ExtendedWidth)).ashr(Scale);
+    APInt Product =
+        (C0->sext(ExtendedWidth) * C1->sext(ExtendedWidth)).ashr(Scale);
     if (IntrinsicID == Intrinsic::smul_fix_sat) {
-      APInt Max = APInt::getSignedMaxValue(Width).sextOrSelf(ExtendedWidth);
-      APInt Min = APInt::getSignedMinValue(Width).sextOrSelf(ExtendedWidth);
+      APInt Max = APInt::getSignedMaxValue(Width).sext(ExtendedWidth);
+      APInt Min = APInt::getSignedMinValue(Width).sext(ExtendedWidth);
       Product = APIntOps::smin(Product, Max);
       Product = APIntOps::smax(Product, Min);
     }
     return ConstantInt::get(Ty->getContext(), Product.sextOrTrunc(Width));
   }
 
   if (IntrinsicID == Intrinsic::fshl || IntrinsicID == Intrinsic::fshr) {
     const APInt *C0, *C1, *C2;

llvm/lib/Analysis/LazyValueInfo.cpp

static ValueLatticeElement getValueFromICmpCondition(Value *Val, ICmpInst *ICI,
   // TODO: An upper bound could be computed as well.
   if (match(LHS, m_CombineOr(m_URem(m_Specific(Val), m_Value()),
                              m_Trunc(m_Specific(Val)))) &&
       match(RHS, m_APInt(C))) {
     // Use the icmp region so we don't have to deal with different predicates.
     ConstantRange CR = ConstantRange::makeExactICmpRegion(EdgePred, *C);
     if (!CR.isEmptySet())
       return ValueLatticeElement::getRange(ConstantRange::getNonEmpty(
-          CR.getUnsignedMin().zextOrSelf(BitWidth), APInt(BitWidth, 0)));
+          CR.getUnsignedMin().zext(BitWidth), APInt(BitWidth, 0)));
   }
 
   return ValueLatticeElement::getOverdefined();
 }
 
 // Handle conditions of the form
 // extractvalue(op.with.overflow(%x, C), 1).
 static ValueLatticeElement getValueFromOverflowCondition(

llvm/lib/Analysis/MemoryBuiltins.cpp

if (FnData->AllocTy == StrDupLike) {
 
     // Strndup limits strlen.
     if (FnData->FstParam > 0) {
       const ConstantInt *Arg =
         dyn_cast<ConstantInt>(Mapper(CB->getArgOperand(FnData->FstParam)));
       if (!Arg)
         return None;
 
-      APInt MaxSize = Arg->getValue().zextOrSelf(IntTyBits);
+      APInt MaxSize = Arg->getValue().zext(IntTyBits);
       if (Size.ugt(MaxSize))
         Size = MaxSize + 1;
     }
     return Size;
   }
 
   const ConstantInt *Arg =
     dyn_cast<ConstantInt>(Mapper(CB->getArgOperand(FnData->FstParam)));

llvm/lib/Analysis/ScalarEvolution.cpp

 
 /// Helper function to compare optional APInts:
 /// (a) if X and Y both exist, return min(X, Y),
 /// (b) if neither X nor Y exist, return None,
 /// (c) if exactly one of X and Y exists, return that value.
 static Optional<APInt> MinOptional(Optional<APInt> X, Optional<APInt> Y) {
   if (X.hasValue() && Y.hasValue()) {
     unsigned W = std::max(X->getBitWidth(), Y->getBitWidth());
-    APInt XW = X->sextOrSelf(W);
-    APInt YW = Y->sextOrSelf(W);
+    APInt XW = X->sext(W);
+    APInt YW = Y->sext(W);
     return XW.slt(YW) ? *X : *Y;
   }
   if (!X.hasValue() && !Y.hasValue())
     return None;
   return X.hasValue() ? *X : *Y;
 }
 
 /// Helper function to truncate an optional APInt to a given BitWidth.
if (LeavesRange(*Max))
       return { Max, true };
 
     // Solutions were found, but were eliminated, hence the "true".
     return { None, true };
   };
 
   std::tie(A, B, C, M, BitWidth) = *T;
   // Lower bound is inclusive, subtract 1 to represent the exiting value.
-  APInt Lower = Range.getLower().sextOrSelf(A.getBitWidth()) - 1;
-  APInt Upper = Range.getUpper().sextOrSelf(A.getBitWidth());
+  APInt Lower = Range.getLower().sext(A.getBitWidth()) - 1;
+  APInt Upper = Range.getUpper().sext(A.getBitWidth());
   auto SL = SolveForBoundary(Lower);
   auto SU = SolveForBoundary(Upper);
   // If any of the solutions was unknown, no meaninigful conclusions can
   // be made.
   if (!SL.second || !SU.second)
     return None;
 
   // Claim: The correct solution is not some value between Min and Max.

llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp

 /// composed of a repeated sequence of identical bytes and return the
 /// byte value.  If it is not a repeated sequence, return -1.
 static int isRepeatedByteSequence(const Value *V, const DataLayout &DL) {
   if (const ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
     uint64_t Size = DL.getTypeAllocSizeInBits(V->getType());
     assert(Size % 8 == 0);
 
     // Extend the element to take zero padding into account.
-    APInt Value = CI->getValue().zextOrSelf(Size);
+    APInt Value = CI->getValue().zext(Size);
     if (!Value.isSplat(8))
       return -1;
 
     return Value.zextOrTrunc(8).getZExtValue();
   }
   if (const ConstantArray *CA = dyn_cast<ConstantArray>(V)) {
     // Make sure all array elements are sequences of the same repeated
     // byte.

llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp

 }
 
 // Get a vectorized representation of the memset value operand, GISel edition.
 static Register getMemsetValue(Register Val, LLT Ty, MachineIRBuilder &MIB) {
   MachineRegisterInfo &MRI = *MIB.getMRI();
   unsigned NumBits = Ty.getScalarSizeInBits();
   auto ValVRegAndVal = getIConstantVRegValWithLookThrough(Val, MRI);
   if (!Ty.isVector() && ValVRegAndVal) {
-    APInt Scalar = ValVRegAndVal->Value.truncOrSelf(8);
+    APInt Scalar = ValVRegAndVal->Value.trunc(8);
     APInt SplatVal = APInt::getSplat(NumBits, Scalar);
     return MIB.buildConstant(Ty, SplatVal).getReg(0);
   }
 
   // Extend the byte value to the larger type, and then multiply by a magic
   // value 0x010101... in order to replicate it across every byte.
   // Unless it's zero, in which case just emit a larger G_CONSTANT 0.
   if (ValVRegAndVal && ValVRegAndVal->Value == 0) {

llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

void DAGCombiner::deleteAndRecombine(SDNode *N) {
   DAG.DeleteNode(N);
 }
 
 // APInts must be the same size for most operations, this helper
 // function zero extends the shorter of the pair so that they match.
 // We provide an Offset so that we can create bitwidths that won't overflow.
 static void zeroExtendToMatch(APInt &LHS, APInt &RHS, unsigned Offset = 0) {
   unsigned Bits = Offset + std::max(LHS.getBitWidth(), RHS.getBitWidth());
-  LHS = LHS.zextOrSelf(Bits);
-  RHS = RHS.zextOrSelf(Bits);
+  LHS = LHS.zext(Bits);
+  RHS = RHS.zext(Bits);
 }
 
 // Return true if this node is a setcc, or is a select_cc
 // that selects between the target values used for true and false, making it
 // equivalent to a setcc. Also, set the incoming LHS, RHS, and CC references to
 // the appropriate nodes based on the type of node we are checking. This
 // simplifies life a bit for the callers.
 bool DAGCombiner::isSetCCEquivalent(SDValue N, SDValue &LHS, SDValue &RHS,
if (N0 != N2 && (N2.getOpcode() != ISD::TRUNCATE || N0 != N2.getOperand(0)))
       return 0;
     // The constants need to be the same or a truncated version of each other.
     ConstantSDNode *N1C = isConstOrConstSplat(N1);
     ConstantSDNode *N3C = isConstOrConstSplat(N3);
     if (!N1C || !N3C)
       return 0;
     const APInt &C1 = N1C->getAPIntValue();
     const APInt &C2 = N3C->getAPIntValue();
-    if (C1.getBitWidth() < C2.getBitWidth() ||
-        C1 != C2.sextOrSelf(C1.getBitWidth()))
+    if (C1.getBitWidth() < C2.getBitWidth() || C1 != C2.sext(C1.getBitWidth()))
       return 0;
     return CC == ISD::SETLT ? ISD::SMIN : (CC == ISD::SETGT ? ISD::SMAX : 0);
   };
 
   // Check the initial value is a SMIN/SMAX equivalent.
   unsigned Opcode0 = isSignedMinMax(N0, N1, N2, N3, CC);
   if (!Opcode0)
     return SDValue();
if ((N0 != N2 &&
     return SDValue();
   ConstantSDNode *N1C = isConstOrConstSplat(N1);
   ConstantSDNode *N3C = isConstOrConstSplat(N3);
   if (!N1C || !N3C)
     return SDValue();
   const APInt &C1 = N1C->getAPIntValue();
   const APInt &C3 = N3C->getAPIntValue();
   if (!(C1 + 1).isPowerOf2() || C1.getBitWidth() < C3.getBitWidth() ||
-      C1 != C3.zextOrSelf(C1.getBitWidth()))
+      C1 != C3.zext(C1.getBitWidth()))
     return SDValue();
 
   unsigned BW = (C1 + 1).exactLogBase2();
   EVT FPVT = N0.getOperand(0).getValueType();
   EVT NewVT = EVT::getIntegerVT(*DAG.getContext(), BW);
   if (FPVT.isVector())
     NewVT = EVT::getVectorVT(*DAG.getContext(), NewVT,
                              FPVT.getVectorElementCount());

llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp

if (isa<UndefValue>(V) || isa<ConstantExpr>(V)) {
     DestLOI.NumSignBits = 1;
     DestLOI.Known = KnownBits(BitWidth);
     return;
   }
 
   if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
     APInt Val;
     if (TLI->signExtendConstant(CI))
-      Val = CI->getValue().sextOrSelf(BitWidth);
+      Val = CI->getValue().sext(BitWidth);
     else
-      Val = CI->getValue().zextOrSelf(BitWidth);
+      Val = CI->getValue().zext(BitWidth);
     DestLOI.NumSignBits = Val.getNumSignBits();
     DestLOI.Known = KnownBits::makeConstant(Val);
   } else {
     assert(ValueMap.count(V) && "V should have been placed in ValueMap when its"
                                 "CopyToReg node was created.");
     Register SrcReg = ValueMap[V];
     if (!Register::isVirtualRegister(SrcReg)) {
       DestLOI.IsValid = false;
if (isa<UndefValue>(V) || isa<ConstantExpr>(V)) {
       DestLOI.NumSignBits = 1;
       DestLOI.Known = KnownBits(BitWidth);
       return;
     }
 
     if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
       APInt Val;
       if (TLI->signExtendConstant(CI))
-        Val = CI->getValue().sextOrSelf(BitWidth);
+        Val = CI->getValue().sext(BitWidth);
       else
-        Val = CI->getValue().zextOrSelf(BitWidth);
+        Val = CI->getValue().zext(BitWidth);
       DestLOI.NumSignBits = std::min(DestLOI.NumSignBits, Val.getNumSignBits());
       DestLOI.Known.Zero &= ~Val;
       DestLOI.Known.One &= Val;
       continue;
     }
 
     assert(ValueMap.count(V) && "V should have been placed in ValueMap when "
                                 "its CopyToReg node was created.");

llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp

SDValue DAGTypeLegalizer::PromoteIntRes_UNDEF(SDNode *N) {
   return DAG.getUNDEF(TLI.getTypeToTransformTo(*DAG.getContext(),
                                                N->getValueType(0)));
 }
 
 SDValue DAGTypeLegalizer::PromoteIntRes_VSCALE(SDNode *N) {
   EVT VT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
 
   APInt MulImm = cast<ConstantSDNode>(N->getOperand(0))->getAPIntValue();
-  return DAG.getVScale(SDLoc(N), VT, MulImm.sextOrSelf(VT.getSizeInBits()));
+  return DAG.getVScale(SDLoc(N), VT, MulImm.sext(VT.getSizeInBits()));
 }
 
 SDValue DAGTypeLegalizer::PromoteIntRes_VAARG(SDNode *N) {
   SDValue Chain = N->getOperand(0); // Get the chain.
   SDValue Ptr = N->getOperand(1); // Get the pointer.
   EVT VT = N->getValueType(0);
   SDLoc dl(N);
 

llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

 //                              ISD Namespace
 //===----------------------------------------------------------------------===//
 
 bool ISD::isConstantSplatVector(const SDNode *N, APInt &SplatVal) {
   if (N->getOpcode() == ISD::SPLAT_VECTOR) {
     unsigned EltSize =
         N->getValueType(0).getVectorElementType().getSizeInBits();
     if (auto *Op0 = dyn_cast<ConstantSDNode>(N->getOperand(0))) {
-      SplatVal = Op0->getAPIntValue().truncOrSelf(EltSize);
+      SplatVal = Op0->getAPIntValue().trunc(EltSize);
       return true;
     }
     if (auto *Op0 = dyn_cast<ConstantFPSDNode>(N->getOperand(0))) {
-      SplatVal = Op0->getValueAPF().bitcastToAPInt().truncOrSelf(EltSize);
+      SplatVal = Op0->getValueAPF().bitcastToAPInt().trunc(EltSize);
       return true;
     }
   }
 
   auto *BV = dyn_cast<BuildVectorSDNode>(N);
   if (!BV)
     return false;
 
case ISD::EXTRACT_SUBVECTOR: {
     // Offset the demanded elts by the subvector index.
     SDValue Src = V.getOperand(0);
     // We don't support scalable vectors at the moment.
     if (Src.getValueType().isScalableVector())
       return false;
     uint64_t Idx = V.getConstantOperandVal(1);
     unsigned NumSrcElts = Src.getValueType().getVectorNumElements();
     APInt UndefSrcElts;
-    APInt DemandedSrcElts = DemandedElts.zextOrSelf(NumSrcElts).shl(Idx);
+    APInt DemandedSrcElts = DemandedElts.zext(NumSrcElts).shl(Idx);
     if (isSplatValue(Src, DemandedSrcElts, UndefSrcElts, Depth + 1)) {
       UndefElts = UndefSrcElts.extractBits(NumElts, Idx);
       return true;
     }
     break;
   }
   case ISD::ANY_EXTEND_VECTOR_INREG:
   case ISD::SIGN_EXTEND_VECTOR_INREG:
   case ISD::ZERO_EXTEND_VECTOR_INREG: {
     // Widen the demanded elts by the src element count.
     SDValue Src = V.getOperand(0);
     // We don't support scalable vectors at the moment.
     if (Src.getValueType().isScalableVector())
       return false;
     unsigned NumSrcElts = Src.getValueType().getVectorNumElements();
     APInt UndefSrcElts;
-    APInt DemandedSrcElts = DemandedElts.zextOrSelf(NumSrcElts);
+    APInt DemandedSrcElts = DemandedElts.zext(NumSrcElts);
     if (isSplatValue(Src, DemandedSrcElts, UndefSrcElts, Depth + 1)) {
-      UndefElts = UndefSrcElts.truncOrSelf(NumElts);
+      UndefElts = UndefSrcElts.trunc(NumElts);
       return true;
     }
     break;
   }
   case ISD::BITCAST: {
     SDValue Src = V.getOperand(0);
     EVT SrcVT = Src.getValueType();
     unsigned SrcBitWidth = SrcVT.getScalarSizeInBits();
KnownBits SelectionDAG::computeKnownBits(SDValue Op, const APInt &DemandedElts,
   case ISD::EXTRACT_SUBVECTOR: {
     // Offset the demanded elts by the subvector index.
     SDValue Src = Op.getOperand(0);
     // Bail until we can represent demanded elements for scalable vectors.
     if (Src.getValueType().isScalableVector())
       break;
     uint64_t Idx = Op.getConstantOperandVal(1);
     unsigned NumSrcElts = Src.getValueType().getVectorNumElements();
-    APInt DemandedSrcElts = DemandedElts.zextOrSelf(NumSrcElts).shl(Idx);
+    APInt DemandedSrcElts = DemandedElts.zext(NumSrcElts).shl(Idx);
     Known = computeKnownBits(Src, DemandedSrcElts, Depth + 1);
     break;
   }
   case ISD::SCALAR_TO_VECTOR: {
     // We know about scalar_to_vector as much as we know about it source,
     // which becomes the first element of otherwise unknown vector.
     if (DemandedElts != 1)
       break;
case ISD::LOAD: {
     } else if (const MDNode *Ranges = LD->getRanges()) {
       if (LD->getExtensionType() == ISD::NON_EXTLOAD)
         computeKnownBitsFromRangeMetadata(*Ranges, Known);
     }
     break;
   }
   case ISD::ZERO_EXTEND_VECTOR_INREG: {
     EVT InVT = Op.getOperand(0).getValueType();
-    APInt InDemandedElts = DemandedElts.zextOrSelf(InVT.getVectorNumElements());
+    APInt InDemandedElts = DemandedElts.zext(InVT.getVectorNumElements());
     Known = computeKnownBits(Op.getOperand(0), InDemandedElts, Depth + 1);
     Known = Known.zext(BitWidth);
     break;
   }
   case ISD::ZERO_EXTEND: {
     Known = computeKnownBits(Op.getOperand(0), DemandedElts, Depth + 1);
     Known = Known.zext(BitWidth);
     break;
   }
   case ISD::SIGN_EXTEND_VECTOR_INREG: {
     EVT InVT = Op.getOperand(0).getValueType();
-    APInt InDemandedElts = DemandedElts.zextOrSelf(InVT.getVectorNumElements());
+    APInt InDemandedElts = DemandedElts.zext(InVT.getVectorNumElements());
     Known = computeKnownBits(Op.getOperand(0), InDemandedElts, Depth + 1);
     // If the sign bit is known to be zero or one, then sext will extend
     // it to the top bits, else it will just zext.
     Known = Known.sext(BitWidth);
     break;
   }
   case ISD::SIGN_EXTEND: {
     Known = computeKnownBits(Op.getOperand(0), DemandedElts, Depth + 1);
     // If the sign bit is known to be zero or one, then sext will extend
     // it to the top bits, else it will just zext.
     Known = Known.sext(BitWidth);
     break;
   }
   case ISD::ANY_EXTEND_VECTOR_INREG: {
     EVT InVT = Op.getOperand(0).getValueType();
-    APInt InDemandedElts = DemandedElts.zextOrSelf(InVT.getVectorNumElements());
+    APInt InDemandedElts = DemandedElts.zext(InVT.getVectorNumElements());
     Known = computeKnownBits(Op.getOperand(0), InDemandedElts, Depth + 1);
     Known = Known.anyext(BitWidth);
     break;
   }
   case ISD::ANY_EXTEND: {
     Known = computeKnownBits(Op.getOperand(0), DemandedElts, Depth + 1);
     Known = Known.anyext(BitWidth);
     break;
case ISD::SIGN_EXTEND_INREG:
     // Max of the input and what this extends.
     Tmp = cast<VTSDNode>(Op.getOperand(1))->getVT().getScalarSizeInBits();
     Tmp = VTBits-Tmp+1;
     Tmp2 = ComputeNumSignBits(Op.getOperand(0), DemandedElts, Depth+1);
     return std::max(Tmp, Tmp2);
   case ISD::SIGN_EXTEND_VECTOR_INREG: {
     SDValue Src = Op.getOperand(0);
     EVT SrcVT = Src.getValueType();
-    APInt DemandedSrcElts = DemandedElts.zextOrSelf(SrcVT.getVectorNumElements());
+    APInt DemandedSrcElts = DemandedElts.zext(SrcVT.getVectorNumElements());
     Tmp = VTBits - SrcVT.getScalarSizeInBits();
     return ComputeNumSignBits(Src, DemandedSrcElts, Depth+1) + Tmp;
   }
   case ISD::SRA:
     Tmp = ComputeNumSignBits(Op.getOperand(0), DemandedElts, Depth + 1);
     // SRA X, C -> adds C sign bits.
     if (const APInt *ShAmt =
             getValidMinimumShiftAmountConstant(Op, DemandedElts))
unsigned SelectionDAG::ComputeNumSignBits(SDValue Op, const APInt &DemandedElts,
   case ISD::EXTRACT_SUBVECTOR: {
     // Offset the demanded elts by the subvector index.
     SDValue Src = Op.getOperand(0);
     // Bail until we can represent demanded elements for scalable vectors.
     if (Src.getValueType().isScalableVector())
       break;
     uint64_t Idx = Op.getConstantOperandVal(1);
     unsigned NumSrcElts = Src.getValueType().getVectorNumElements();
-    APInt DemandedSrcElts = DemandedElts.zextOrSelf(NumSrcElts).shl(Idx);
+    APInt DemandedSrcElts = DemandedElts.zext(NumSrcElts).shl(Idx);
     return ComputeNumSignBits(Src, DemandedSrcElts, Depth + 1);
   }
   case ISD::CONCAT_VECTORS: {
     // Determine the minimum number of sign bits across all demanded
     // elts of the input vectors. Early out if the result is already 1.
     Tmp = std::numeric_limits<unsigned>::max();
     EVT SubVectorVT = Op.getOperand(0).getValueType();
     unsigned NumSubVectorElts = SubVectorVT.getVectorNumElements();
if (BV1 && BV2 && BVVT.isInteger() && BVVT == N2.getValueType()) {
                                            DstBits, RawBits, DstUndefs,
                                            BitVector(RawBits.size(), false));
           EVT BVEltVT = BV1->getOperand(0).getValueType();
           unsigned BVEltBits = BVEltVT.getSizeInBits();
           SmallVector<SDValue> Ops(DstBits.size(), getUNDEF(BVEltVT));
           for (unsigned I = 0, E = DstBits.size(); I != E; ++I) {
             if (DstUndefs[I])
               continue;
-            Ops[I] = getConstant(DstBits[I].sextOrSelf(BVEltBits), DL, BVEltVT);
+            Ops[I] = getConstant(DstBits[I].sext(BVEltBits), DL, BVEltVT);
           }
           return getBitcast(VT, getBuildVector(BVVT, DL, Ops));
         }
       }
     }
   }
 
   // Fold (mul step_vector(C0), C1) to (step_vector(C0 * C1)).
for (unsigned I = 0; I != NumSrcOps; ++I) {
     SDValue Op = getOperand(I);
     if (Op.isUndef()) {
       SrcUndeElements.set(I);
       continue;
     }
     auto *CInt = dyn_cast<ConstantSDNode>(Op);
     auto *CFP = dyn_cast<ConstantFPSDNode>(Op);
     assert((CInt || CFP) && "Unknown constant");
-    SrcBitElements[I] =
-        CInt ? CInt->getAPIntValue().truncOrSelf(SrcEltSizeInBits)
+    SrcBitElements[I] = CInt ? CInt->getAPIntValue().trunc(SrcEltSizeInBits)
                              : CFP->getValueAPF().bitcastToAPInt();
   }
 
   // Recast to dst width.
   recastRawBits(IsLittleEndian, DstEltSizeInBits, RawBitElements,
                 SrcBitElements, UndefElements, SrcUndeElements);
   return true;
 }
 

llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp

case ISD::TargetConstant:
     llvm_unreachable("Can't simplify this node");
   case ISD::SCALAR_TO_VECTOR: {
     if (!DemandedElts[0])
       return TLO.CombineTo(Op, TLO.DAG.getUNDEF(VT));
 
     KnownBits SrcKnown;
     SDValue Src = Op.getOperand(0);
     unsigned SrcBitWidth = Src.getScalarValueSizeInBits();
-    APInt SrcDemandedBits = DemandedBits.zextOrSelf(SrcBitWidth);
+    APInt SrcDemandedBits = DemandedBits.zext(SrcBitWidth);
     if (SimplifyDemandedBits(Src, SrcDemandedBits, SrcKnown, TLO, Depth + 1))
       return true;
 
     // Upper elements are undef, so only get the knownbits if we just demand
     // the bottom element.
     if (DemandedElts == 1)
       Known = SrcKnown.anyextOrTrunc(BitWidth);
     break;
bool TargetLowering::SimplifyDemandedBits(
   }
   case ISD::EXTRACT_SUBVECTOR: {
     // Offset the demanded elts by the subvector index.
     SDValue Src = Op.getOperand(0);
     if (Src.getValueType().isScalableVector())
       break;
     uint64_t Idx = Op.getConstantOperandVal(1);
     unsigned NumSrcElts = Src.getValueType().getVectorNumElements();
-    APInt DemandedSrcElts = DemandedElts.zextOrSelf(NumSrcElts).shl(Idx);
+    APInt DemandedSrcElts = DemandedElts.zext(NumSrcElts).shl(Idx);
 
     if (SimplifyDemandedBits(Src, DemandedBits, DemandedSrcElts, Known, TLO,
                              Depth + 1))
       return true;
 
     // Attempt to avoid multi-use src if we don't need anything from it.
     if (!DemandedBits.isAllOnes() || !DemandedSrcElts.isAllOnes()) {
       SDValue DemandedSrc = SimplifyMultipleUseDemandedBits(
if (DemandedBits.getActiveBits() <= InBits) {
 
       unsigned Opc =
           IsVecInReg ? ISD::ANY_EXTEND_VECTOR_INREG : ISD::ANY_EXTEND;
       if (!TLO.LegalOperations() || isOperationLegal(Opc, VT))
         return TLO.CombineTo(Op, TLO.DAG.getNode(Opc, dl, VT, Src));
     }
 
     APInt InDemandedBits = DemandedBits.trunc(InBits);
-    APInt InDemandedElts = DemandedElts.zextOrSelf(InElts);
+    APInt InDemandedElts = DemandedElts.zext(InElts);
     if (SimplifyDemandedBits(Src, InDemandedBits, InDemandedElts, Known, TLO,
                              Depth + 1))
       return true;
     assert(!Known.hasConflict() && "Bits known to be one AND zero?");
     assert(Known.getBitWidth() == InBits && "Src width has changed?");
     Known = Known.zext(BitWidth);
 
     // Attempt to avoid multi-use ops if we don't need anything from them.
if (DemandedBits.getActiveBits() <= InBits) {
 
       unsigned Opc =
           IsVecInReg ? ISD::ANY_EXTEND_VECTOR_INREG : ISD::ANY_EXTEND;
       if (!TLO.LegalOperations() || isOperationLegal(Opc, VT))
         return TLO.CombineTo(Op, TLO.DAG.getNode(Opc, dl, VT, Src));
     }
 
     APInt InDemandedBits = DemandedBits.trunc(InBits);
-    APInt InDemandedElts = DemandedElts.zextOrSelf(InElts);
+    APInt InDemandedElts = DemandedElts.zext(InElts);
 
     // Since some of the sign extended bits are demanded, we know that the sign
     // bit is demanded.
     InDemandedBits.setBit(InBits - 1);
 
     if (SimplifyDemandedBits(Src, InDemandedBits, InDemandedElts, Known, TLO,
                              Depth + 1))
       return true;
case ISD::ANY_EXTEND_VECTOR_INREG: {
 
     // If we only need the bottom element then we can just bitcast.
     // TODO: Handle ANY_EXTEND?
     if (IsLE && IsVecInReg && DemandedElts == 1 &&
         VT.getSizeInBits() == SrcVT.getSizeInBits())
       return TLO.CombineTo(Op, TLO.DAG.getBitcast(VT, Src));
 
     APInt InDemandedBits = DemandedBits.trunc(InBits);
-    APInt InDemandedElts = DemandedElts.zextOrSelf(InElts);
+    APInt InDemandedElts = DemandedElts.zext(InElts);
     if (SimplifyDemandedBits(Src, InDemandedBits, InDemandedElts, Known, TLO,
                              Depth + 1))
       return true;
     assert(!Known.hasConflict() && "Bits known to be one AND zero?");
     assert(Known.getBitWidth() == InBits && "Src width has changed?");
     Known = Known.anyext(BitWidth);
 
     // Attempt to avoid multi-use ops if we don't need anything from them.
bool TargetLowering::SimplifyDemandedVectorElts(
   }
   case ISD::EXTRACT_SUBVECTOR: {
     // Offset the demanded elts by the subvector index.
     SDValue Src = Op.getOperand(0);
     if (Src.getValueType().isScalableVector())
       break;
     uint64_t Idx = Op.getConstantOperandVal(1);
     unsigned NumSrcElts = Src.getValueType().getVectorNumElements();
-    APInt DemandedSrcElts = DemandedElts.zextOrSelf(NumSrcElts).shl(Idx);
+    APInt DemandedSrcElts = DemandedElts.zext(NumSrcElts).shl(Idx);
 
     APInt SrcUndef, SrcZero;
     if (SimplifyDemandedVectorElts(Src, DemandedSrcElts, SrcUndef, SrcZero, TLO,
                                    Depth + 1))
       return true;
     KnownUndef = SrcUndef.extractBits(NumElts, Idx);
     KnownZero = SrcZero.extractBits(NumElts, Idx);
 
case ISD::VECTOR_SHUFFLE: {
     break;
   }
   case ISD::ANY_EXTEND_VECTOR_INREG:
   case ISD::SIGN_EXTEND_VECTOR_INREG:
   case ISD::ZERO_EXTEND_VECTOR_INREG: {
     APInt SrcUndef, SrcZero;
     SDValue Src = Op.getOperand(0);
     unsigned NumSrcElts = Src.getValueType().getVectorNumElements();
-    APInt DemandedSrcElts = DemandedElts.zextOrSelf(NumSrcElts);
+    APInt DemandedSrcElts = DemandedElts.zext(NumSrcElts);
     if (SimplifyDemandedVectorElts(Src, DemandedSrcElts, SrcUndef, SrcZero, TLO,
                                    Depth + 1))
       return true;
     KnownZero = SrcZero.zextOrTrunc(NumElts);
     KnownUndef = SrcUndef.zextOrTrunc(NumElts);
 
     if (IsLE && Op.getOpcode() == ISD::ANY_EXTEND_VECTOR_INREG &&
         Op.getValueSizeInBits() == Src.getValueSizeInBits() &&
SDValue TargetLowering::expandFP_TO_INT_SAT(SDNode *Node,
   unsigned DstWidth = DstVT.getScalarSizeInBits();
   assert(SatWidth <= DstWidth &&
          "Expected saturation width smaller than result width");
 
   // Determine minimum and maximum integer values and their corresponding
   // floating-point values.
   APInt MinInt, MaxInt;
   if (IsSigned) {
-    MinInt = APInt::getSignedMinValue(SatWidth).sextOrSelf(DstWidth);
-    MaxInt = APInt::getSignedMaxValue(SatWidth).sextOrSelf(DstWidth);
+    MinInt = APInt::getSignedMinValue(SatWidth).sext(DstWidth);
+    MaxInt = APInt::getSignedMaxValue(SatWidth).sext(DstWidth);
   } else {
-    MinInt = APInt::getMinValue(SatWidth).zextOrSelf(DstWidth);
-    MaxInt = APInt::getMaxValue(SatWidth).zextOrSelf(DstWidth);
+    MinInt = APInt::getMinValue(SatWidth).zext(DstWidth);
+    MaxInt = APInt::getMaxValue(SatWidth).zext(DstWidth);
   }
 
   // We cannot risk emitting FP_TO_XINT nodes with a source VT of f16, as
   // libcall emission cannot handle this. Large result types will fail.
   if (SrcVT == MVT::f16) {
     Src = DAG.getNode(ISD::FP_EXTEND, dl, MVT::f32, Src);
     SrcVT = Src.getValueType();
   }

llvm/lib/IR/ConstantRange.cpp

ConstantRange ConstantRange::castOp(Instruction::CastOps CastOp,
   case Instruction::FPToSI:
     if (getBitWidth() == ResultBitWidth)
       return *this;
     else
       return getFull(ResultBitWidth);
   case Instruction::UIToFP: {
     // TODO: use input range if available
     auto BW = getBitWidth();
-    APInt Min = APInt::getMinValue(BW).zextOrSelf(ResultBitWidth);
-    APInt Max = APInt::getMaxValue(BW).zextOrSelf(ResultBitWidth);
+    APInt Min = APInt::getMinValue(BW);
+    APInt Max = APInt::getMaxValue(BW);
+    if (ResultBitWidth > BW) {
+      Min = Min.zext(ResultBitWidth);
+      Max = Max.zext(ResultBitWidth);
+    }
     return ConstantRange(std::move(Min), std::move(Max));
   }
   case Instruction::SIToFP: {
     // TODO: use input range if available
     auto BW = getBitWidth();
-    APInt SMin = APInt::getSignedMinValue(BW).sextOrSelf(ResultBitWidth);
-    APInt SMax = APInt::getSignedMaxValue(BW).sextOrSelf(ResultBitWidth);
+    APInt SMin = APInt::getSignedMinValue(BW);
+    APInt SMax = APInt::getSignedMaxValue(BW);
+    if (ResultBitWidth > BW) {
+      SMin = SMin.sext(ResultBitWidth);
+      SMax = SMax.sext(ResultBitWidth);
+    }
     return ConstantRange(std::move(SMin), std::move(SMax));
   }
   case Instruction::FPTrunc:
   case Instruction::FPExt:
   case Instruction::IntToPtr:
   case Instruction::PtrToInt:
   case Instruction::AddrSpaceCast:
     // Conservatively return getFull set.

llvm/lib/Support/APFixedPoint.cpp

APFixedPoint APFixedPoint::mul(const APFixedPoint &Other,
   APFixedPoint ConvertedOther = Other.convert(CommonFXSema);
   APSInt ThisVal = ConvertedThis.getValue();
   APSInt OtherVal = ConvertedOther.getValue();
   bool Overflowed = false;
 
   // Widen the LHS and RHS so we can perform a full multiplication.
   unsigned Wide = CommonFXSema.getWidth() * 2;
   if (CommonFXSema.isSigned()) {
-    ThisVal = ThisVal.sextOrSelf(Wide);
-    OtherVal = OtherVal.sextOrSelf(Wide);
+    ThisVal = ThisVal.sext(Wide);
+    OtherVal = OtherVal.sext(Wide);
   } else {
-    ThisVal = ThisVal.zextOrSelf(Wide);
-    OtherVal = OtherVal.zextOrSelf(Wide);
+    ThisVal = ThisVal.zext(Wide);
+    OtherVal = OtherVal.zext(Wide);
   }
 
   // Perform the full multiplication and downscale to get the same scale.
   //
   // Note that the right shifts here perform an implicit downwards rounding.
   // This rounding could discard bits that would technically place the result
   // outside the representable range. We interpret the spec as allowing us to
   // perform the rounding step first, avoiding the overflow case that would
APFixedPoint APFixedPoint::div(const APFixedPoint &Other,
   APFixedPoint ConvertedOther = Other.convert(CommonFXSema);
   APSInt ThisVal = ConvertedThis.getValue();
   APSInt OtherVal = ConvertedOther.getValue();
   bool Overflowed = false;
 
   // Widen the LHS and RHS so we can perform a full division.
   unsigned Wide = CommonFXSema.getWidth() * 2;
   if (CommonFXSema.isSigned()) {
-    ThisVal = ThisVal.sextOrSelf(Wide);
-    OtherVal = OtherVal.sextOrSelf(Wide);
+    ThisVal = ThisVal.sext(Wide);
+    OtherVal = OtherVal.sext(Wide);
   } else {
-    ThisVal = ThisVal.zextOrSelf(Wide);
-    OtherVal = OtherVal.zextOrSelf(Wide);
+    ThisVal = ThisVal.zext(Wide);
+    OtherVal = OtherVal.zext(Wide);
   }
 
   // Upscale to compensate for the loss of precision from division, and
   // perform the full division.
   ThisVal = ThisVal.shl(CommonFXSema.getScale());
   APSInt Result;
   if (CommonFXSema.isSigned()) {
     APInt Rem;

 
 APFixedPoint APFixedPoint::shl(unsigned Amt, bool *Overflow) const {
   APSInt ThisVal = Val;
   bool Overflowed = false;
 
   // Widen the LHS.
   unsigned Wide = Sema.getWidth() * 2;
   if (Sema.isSigned())
-    ThisVal = ThisVal.sextOrSelf(Wide);
+    ThisVal = ThisVal.sext(Wide);
   else
-    ThisVal = ThisVal.zextOrSelf(Wide);
+    ThisVal = ThisVal.zext(Wide);
 
   // Clamp the shift amount at the original width, and perform the shift.
   Amt = std::min(Amt, ThisVal.getBitWidth());
   APSInt Result = ThisVal << Amt;
   Result.setIsSigned(Sema.isSigned());
 
   // If our result lies outside of the representative range of the
   // semantic, we either have overflow or saturation.

llvm/lib/Support/APInt.cpp

 }
 
 /// Concatenate the bits from "NewLSB" onto the bottom of *this.  This is
 /// equivalent to:
 ///   (this->zext(NewWidth) << NewLSB.getBitWidth()) | NewLSB.zext(NewWidth)
 /// In the slow case, we know the result is large.
 APInt APInt::concatSlowCase(const APInt &NewLSB) const {
   unsigned NewWidth = getBitWidth() + NewLSB.getBitWidth();
-  APInt Result = NewLSB.zextOrSelf(NewWidth);
+  APInt Result = NewLSB.zext(NewWidth);
   Result.insertBits(*this, NewLSB.getBitWidth());
   return Result;
 }
 
 /// Toggle a given bit to its opposite value whose position is given
 /// as "bitPosition".
 /// Toggles a given bit to its opposite value.
 void APInt::flipBit(unsigned bitPosition) {
APInt APInt::getLoBits(unsigned numBits) const {
   Result &= *this;
   return Result;
 }
 
 /// Return a value containing V broadcasted over NewLen bits.
 APInt APInt::getSplat(unsigned NewLen, const APInt &V) {
   assert(NewLen >= V.getBitWidth() && "Can't splat to smaller bit width!");
 
-  APInt Val = V.zextOrSelf(NewLen);
+  APInt Val = V.zext(NewLen);
   for (unsigned I = V.getBitWidth(); I < NewLen; I <<= 1)
     Val |= Val << I;
 
   return Val;
 }
 
 unsigned APInt::countLeadingZerosSlowCase() const {
   unsigned Count = 0;

llvm/lib/Target/AArch64/AArch64ISelDAGToDAG.cpp

 bool AArch64DAGToDAGISel::SelectSVEAddSubImm(SDValue N, MVT VT, SDValue &Imm,
                                              SDValue &Shift) {
   if (!isa<ConstantSDNode>(N))
     return false;
 
   SDLoc DL(N);
   uint64_t Val = cast<ConstantSDNode>(N)
                      ->getAPIntValue()
-                     .truncOrSelf(VT.getFixedSizeInBits())
+                     .trunc(VT.getFixedSizeInBits())
                      .getZExtValue();
 
   switch (VT.SimpleTy) {
   case MVT::i8:
     // All immediates are supported.
     Shift = CurDAG->getTargetConstant(0, DL, MVT::i32);
     Imm = CurDAG->getTargetConstant(Val, DL, MVT::i32);
     return true;

 bool AArch64DAGToDAGISel::SelectSVECpyDupImm(SDValue N, MVT VT, SDValue &Imm,
                                              SDValue &Shift) {
   if (!isa<ConstantSDNode>(N))
     return false;
 
   SDLoc DL(N);
   int64_t Val = cast<ConstantSDNode>(N)
                     ->getAPIntValue()
-                    .truncOrSelf(VT.getFixedSizeInBits())
+                    .trunc(VT.getFixedSizeInBits())
                     .getSExtValue();
 
   switch (VT.SimpleTy) {
   case MVT::i8:
     // All immediates are supported.
     Shift = CurDAG->getTargetConstant(0, DL, MVT::i32);
     Imm = CurDAG->getTargetConstant(Val & 0xFF, DL, MVT::i32);
     return true;

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

if (SrcElementWidth < SatWidth || SrcElementVT == MVT::f64)
     return SDValue();
 
   EVT IntVT = SrcVT.changeVectorElementTypeToInteger();
   SDValue NativeCvt = DAG.getNode(Op.getOpcode(), DL, IntVT, SrcVal,
                                   DAG.getValueType(IntVT.getScalarType()));
   SDValue Sat;
   if (Op.getOpcode() == ISD::FP_TO_SINT_SAT) {
     SDValue MinC = DAG.getConstant(
-        APInt::getSignedMaxValue(SatWidth).sextOrSelf(SrcElementWidth), DL,
-        IntVT);
+        APInt::getSignedMaxValue(SatWidth).sext(SrcElementWidth), DL, IntVT);
     SDValue Min = DAG.getNode(ISD::SMIN, DL, IntVT, NativeCvt, MinC);
     SDValue MaxC = DAG.getConstant(
-        APInt::getSignedMinValue(SatWidth).sextOrSelf(SrcElementWidth), DL,
-        IntVT);
+        APInt::getSignedMinValue(SatWidth).sext(SrcElementWidth), DL, IntVT);
     Sat = DAG.getNode(ISD::SMAX, DL, IntVT, Min, MaxC);
   } else {
     SDValue MinC = DAG.getConstant(
-        APInt::getAllOnesValue(SatWidth).zextOrSelf(SrcElementWidth), DL,
-        IntVT);
+        APInt::getAllOnesValue(SatWidth).zext(SrcElementWidth), DL, IntVT);
     Sat = DAG.getNode(ISD::UMIN, DL, IntVT, NativeCvt, MinC);
   }
 
   return DAG.getNode(ISD::TRUNCATE, DL, DstVT, Sat);
 }
 
 SDValue AArch64TargetLowering::LowerFP_TO_INT_SAT(SDValue Op,
                                                   SelectionDAG &DAG) const {
SDValue AArch64TargetLowering::LowerFP_TO_INT_SAT(SDValue Op,
   if (DstWidth < SatWidth)
     return SDValue();
 
   SDValue NativeCvt =
       DAG.getNode(Op.getOpcode(), DL, DstVT, SrcVal, DAG.getValueType(DstVT));
   SDValue Sat;
   if (Op.getOpcode() == ISD::FP_TO_SINT_SAT) {
     SDValue MinC = DAG.getConstant(
-        APInt::getSignedMaxValue(SatWidth).sextOrSelf(DstWidth), DL, DstVT);
+        APInt::getSignedMaxValue(SatWidth).sext(DstWidth), DL, DstVT);
     SDValue Min = DAG.getNode(ISD::SMIN, DL, DstVT, NativeCvt, MinC);
     SDValue MaxC = DAG.getConstant(
-        APInt::getSignedMinValue(SatWidth).sextOrSelf(DstWidth), DL, DstVT);
+        APInt::getSignedMinValue(SatWidth).sext(DstWidth), DL, DstVT);
     Sat = DAG.getNode(ISD::SMAX, DL, DstVT, Min, MaxC);
   } else {
     SDValue MinC = DAG.getConstant(
-        APInt::getAllOnesValue(SatWidth).zextOrSelf(DstWidth), DL, DstVT);
+        APInt::getAllOnesValue(SatWidth).zext(DstWidth), DL, DstVT);
     Sat = DAG.getNode(ISD::UMIN, DL, DstVT, NativeCvt, MinC);
   }
 
   return DAG.getNode(ISD::TRUNCATE, DL, DstVT, Sat);
 }
 
 SDValue AArch64TargetLowering::LowerVectorINT_TO_FP(SDValue Op,
                                                     SelectionDAG &DAG) const {

 
 SDValue AArch64TargetLowering::LowerVSCALE(SDValue Op,
                                            SelectionDAG &DAG) const {
   EVT VT = Op.getValueType();
   assert(VT != MVT::i64 && "Expected illegal VSCALE node");
 
   SDLoc DL(Op);
   APInt MulImm = cast<ConstantSDNode>(Op.getOperand(0))->getAPIntValue();
-  return DAG.getZExtOrTrunc(DAG.getVScale(DL, MVT::i64, MulImm.sextOrSelf(64)),
-                            DL, VT);
+  return DAG.getZExtOrTrunc(DAG.getVScale(DL, MVT::i64, MulImm.sext(64)), DL,
+                            VT);
 }
 
 /// Set the IntrinsicInfo for the `aarch64_sve_st<N>` intrinsics.
 template <unsigned NumVecs>
 static bool
 setInfoSVEStN(const AArch64TargetLowering &TLI, const DataLayout &DL,
               AArch64TargetLowering::IntrinsicInfo &Info, const CallInst &CI) {
   Info.opc = ISD::INTRINSIC_VOID;

llvm/lib/Target/AArch64/GISel/AArch64PostLegalizerCombiner.cpp

bool matchAArch64MulConstCombine(
   Register Dst = MI.getOperand(0).getReg();
   const LLT Ty = MRI.getType(LHS);
 
   // The below optimizations require a constant RHS.
   auto Const = getIConstantVRegValWithLookThrough(RHS, MRI);
   if (!Const)
     return false;
 
-  const APInt ConstValue = Const->Value.sextOrSelf(Ty.getSizeInBits());
+  const APInt ConstValue = Const->Value.sext(Ty.getSizeInBits());
   // The following code is ported from AArch64ISelLowering.
   // Multiplication of a power of two plus/minus one can be done more
   // cheaply as as shift+add/sub. For now, this is true unilaterally. If
   // future CPUs have a cheaper MADD instruction, this may need to be
   // gated on a subtarget feature. For Cyclone, 32-bit MADD is 4 cycles and
   // 64-bit is 5 cycles, so this is always a win.
   // More aggressively, some multiplications N0 * C can be lowered to
   // shift+add+shift if the constant C = A * B where A = 2^N + 1 and B = 2^M,

llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp

bool AMDGPUInstructionSelector::selectG_PTRMASK(MachineInstr &I) const {
   const RegisterBank *SrcRB = RBI.getRegBank(SrcReg, *MRI, TRI);
   const RegisterBank *MaskRB = RBI.getRegBank(MaskReg, *MRI, TRI);
   const bool IsVGPR = DstRB->getID() == AMDGPU::VGPRRegBankID;
   if (DstRB != SrcRB) // Should only happen for hand written MIR.
     return false;
 
   // Try to avoid emitting a bit operation when we only need to touch half of
   // the 64-bit pointer.
-  APInt MaskOnes = KnownBits->getKnownOnes(MaskReg).zextOrSelf(64);
+  APInt MaskOnes = KnownBits->getKnownOnes(MaskReg).zext(64);
   const APInt MaskHi32 = APInt::getHighBitsSet(64, 32);
   const APInt MaskLo32 = APInt::getLowBitsSet(64, 32);
 
   const bool CanCopyLow32 = (MaskOnes & MaskLo32) == MaskLo32;
   const bool CanCopyHi32 = (MaskOnes & MaskHi32) == MaskHi32;
 
   if (!IsVGPR && Ty.getSizeInBits() == 64 &&
       !CanCopyLow32 && !CanCopyHi32) {

llvm/lib/Target/Hexagon/HexagonConstPropagation.cpp

bool MachineConstEvaluator::evaluateCMPii(uint32_t Cmp, const APInt &A1,
   }
   assert((Cmp & (Comparison::L | Comparison::G)) && "Malformed comparison");
   Result = false;
 
   unsigned W1 = A1.getBitWidth();
   unsigned W2 = A2.getBitWidth();
   unsigned MaxW = (W1 >= W2) ? W1 : W2;
   if (Cmp & Comparison::U) {
-    const APInt Zx1 = A1.zextOrSelf(MaxW);
-    const APInt Zx2 = A2.zextOrSelf(MaxW);
+    const APInt Zx1 = A1.zext(MaxW);
+    const APInt Zx2 = A2.zext(MaxW);
     if (Cmp & Comparison::L)
       Result = Zx1.ult(Zx2);
     else if (Cmp & Comparison::G)
       Result = Zx2.ult(Zx1);
     return true;
   }
 
   // Signed comparison.
-  const APInt Sx1 = A1.sextOrSelf(MaxW);
-  const APInt Sx2 = A2.sextOrSelf(MaxW);
+  const APInt Sx1 = A1.sext(MaxW);
+  const APInt Sx2 = A2.sext(MaxW);
   if (Cmp & Comparison::L)
     Result = Sx1.slt(Sx2);
   else if (Cmp & Comparison::G)
     Result = Sx2.slt(Sx1);
   return true;
 }
 
 bool MachineConstEvaluator::evaluateCMPpi(uint32_t Cmp, uint32_t Props,
bool MachineConstEvaluator::evaluateSplatr(const RegisterSubReg &R1,
   }
   return true;
 }
 
 bool MachineConstEvaluator::evaluateSplati(const APInt &A1, unsigned Bits,
       unsigned Count, APInt &Result) {
   assert(Count > 0);
   unsigned BW = A1.getBitWidth(), SW = Count*Bits;
-  APInt LoBits = (Bits < BW) ? A1.trunc(Bits) : A1.zextOrSelf(Bits);
+  APInt LoBits = (Bits < BW) ? A1.trunc(Bits) : A1.zext(Bits);
   if (Count > 1)
     LoBits = LoBits.zext(SW);
 
   APInt Res(SW, 0, false);
   for (unsigned i = 0; i < Count; ++i) {
     Res <<= Bits;
     Res |= LoBits;
   }
bool HexagonConstEvaluator::evaluateHexRSEQ32(RegisterSubReg RL, RegisterSubReg RH,
   for (unsigned i = 0; i < HN; ++i) {
     bool Eval = constToInt(LSH.Values[i], HiVs[i]);
     if (!Eval)
       return false;
     assert(HiVs[i].getBitWidth() == 32);
   }
 
   for (unsigned i = 0; i < HiVs.size(); ++i) {
-    APInt HV = HiVs[i].zextOrSelf(64) << 32;
+    APInt HV = HiVs[i].zext(64) << 32;
     for (unsigned j = 0; j < LoVs.size(); ++j) {
-      APInt LV = LoVs[j].zextOrSelf(64);
+      APInt LV = LoVs[j].zext(64);
       const Constant *C = intToConst(HV | LV);
       Result.add(C);
       if (Result.isBottom())
         return false;
     }
   }
   return !Result.isBottom();
 }

llvm/lib/Target/RISCV/RISCVISelLowering.cpp

case RISCVISD::FMV_X_ANYEXTW_RV64: {
     // DAGCombiner::visitBITCAST. It performs the equivalent of:
     // fold (bitconvert (fneg x)) -> (xor (bitconvert x), signbit)
     // fold (bitconvert (fabs x)) -> (and (bitconvert x), (not signbit))
     if (!(Op0.getOpcode() == ISD::FNEG || Op0.getOpcode() == ISD::FABS) ||
         !Op0.getNode()->hasOneUse())
       break;
     SDValue NewFMV = DAG.getNode(N->getOpcode(), DL, VT, Op0.getOperand(0));
     unsigned FPBits = N->getOpcode() == RISCVISD::FMV_X_ANYEXTW_RV64 ? 32 : 16;
-    APInt SignBit = APInt::getSignMask(FPBits).sextOrSelf(VT.getSizeInBits());
+    APInt SignBit = APInt::getSignMask(FPBits).sext(VT.getSizeInBits());
     if (Op0.getOpcode() == ISD::FNEG)
       return DAG.getNode(ISD::XOR, DL, VT, NewFMV,
                          DAG.getConstant(SignBit, DL, VT));
 
     assert(Op0.getOpcode() == ISD::FABS);
     return DAG.getNode(ISD::AND, DL, VT, NewFMV,
                        DAG.getConstant(~SignBit, DL, VT));
   }

llvm/lib/Target/X86/X86ISelLowering.cpp

X86TargetLowering::LowerFP_TO_INT_SAT(SDValue Op, SelectionDAG &DAG) const {
   // we can always use signed conversion, which is native.
   if (SatWidth < TmpWidth)
     FpToIntOpcode = ISD::FP_TO_SINT;
 
   // Determine minimum and maximum integer values and their corresponding
   // floating-point values.
   APInt MinInt, MaxInt;
   if (IsSigned) {
-    MinInt = APInt::getSignedMinValue(SatWidth).sextOrSelf(DstWidth);
-    MaxInt = APInt::getSignedMaxValue(SatWidth).sextOrSelf(DstWidth);
+    MinInt = APInt::getSignedMinValue(SatWidth).sext(DstWidth);
+    MaxInt = APInt::getSignedMaxValue(SatWidth).sext(DstWidth);
   } else {
-    MinInt = APInt::getMinValue(SatWidth).zextOrSelf(DstWidth);
-    MaxInt = APInt::getMaxValue(SatWidth).zextOrSelf(DstWidth);
+    MinInt = APInt::getMinValue(SatWidth).zext(DstWidth);
+    MaxInt = APInt::getMaxValue(SatWidth).zext(DstWidth);
   }
 
   APFloat MinFloat(DAG.EVTToAPFloatSemantics(SrcVT));
   APFloat MaxFloat(DAG.EVTToAPFloatSemantics(SrcVT));
 
   APFloat::opStatus MinStatus = MinFloat.convertFromAPInt(
     MinInt, IsSigned, APFloat::rmTowardZero);
   APFloat::opStatus MaxStatus = MaxFloat.convertFromAPInt(
case X86ISD::MOVMSK: {
 
     // Only demand the vector elements of the sign bits we need.
     APInt KnownUndef, KnownZero;
     APInt DemandedElts = OriginalDemandedBits.zextOrTrunc(NumElts);
     if (SimplifyDemandedVectorElts(Src, DemandedElts, KnownUndef, KnownZero,
                                    TLO, Depth + 1))
       return true;
 
-    Known.Zero = KnownZero.zextOrSelf(BitWidth);
+    Known.Zero = KnownZero.zext(BitWidth);
     Known.Zero.setHighBits(BitWidth - NumElts);
 
     // MOVMSK only uses the MSB from each vector element.
     KnownBits KnownSrc;
     APInt DemandedSrcBits = APInt::getSignMask(SrcBits);
     if (SimplifyDemandedBits(Src, DemandedSrcBits, DemandedElts, KnownSrc, TLO,
                              Depth + 1))
       return true;
if (CIdx && VT.isInteger()) {
     APInt UndefVecElts;
     SmallVector<APInt, 16> EltBits;
     unsigned VecEltBitWidth = SrcVT.getScalarSizeInBits();
     if (getTargetConstantBitsFromNode(InputVector, VecEltBitWidth, UndefVecElts,
                                       EltBits, true, false)) {
       uint64_t Idx = CIdx->getZExtValue();
       if (UndefVecElts[Idx])
         return IsPextr ? DAG.getConstant(0, dl, VT) : DAG.getUNDEF(VT);
-      return DAG.getConstant(EltBits[Idx].zextOrSelf(VT.getScalarSizeInBits()),
-                             dl, VT);
+      return DAG.getConstant(EltBits[Idx].zext(VT.getScalarSizeInBits()), dl,
+                             VT);
     }
   }
 
   if (IsPextr) {
     const TargetLowering &TLI = DAG.getTargetLoweringInfo();
     if (TLI.SimplifyDemandedBits(SDValue(N, 0),
                                  APInt::getAllOnes(VT.getSizeInBits()), DCI))
       return SDValue(N, 0);

llvm/lib/Target/X86/X86TargetTransformInfo.cpp

if ((MScalarTy == MVT::i16 && ST->hasSSE2()) ||
         // Case#1: inserting into 1th index needs vpinsrd + inserti128.
         // Case#2: inserting into 5th index needs extracti128 + vpinsrd +
         // inserti128.
         // Case#3: inserting into 4,5,6,7 index needs 4*vpinsrd + inserti128.
         const int CostValue = *LT.first.getValue();
         assert(CostValue >= 0 && "Negative cost!");
         unsigned Num128Lanes = SizeInBits / 128 * CostValue;
         unsigned NumElts = LT.second.getVectorNumElements() * CostValue;
-        APInt WidenedDemandedElts = DemandedElts.zextOrSelf(NumElts);
+        APInt WidenedDemandedElts = DemandedElts.zext(NumElts);
         unsigned Scale = NumElts / Num128Lanes;
         // We iterate each 128-lane, and check if we need a
         // extracti128/inserti128 for this 128-lane.
         for (unsigned I = 0; I < NumElts; I += Scale) {
           APInt Mask = WidenedDemandedElts.getBitsSet(NumElts, I, I + Scale);
           APInt MaskedDE = Mask & WidenedDemandedElts;
           unsigned Population = MaskedDE.countPopulation();
           Cost += (Population > 0 && Population != Scale &&
X86TTIImpl::getReplicationShuffleCost(Type *EltTy, int ReplicationFactor,
 
   auto *SingleDstVecTy = FixedVectorType::get(EltTy, NumEltsPerDstVec);
 
   // Not all the produced Dst elements may be demanded. In our case,
   // given that a single Dst vector is formed by a single shuffle,
   // if all elements that will form a single Dst vector aren't demanded,
   // then we won't need to do that shuffle, so adjust the cost accordingly.
   APInt DemandedDstVectors = APIntOps::ScaleBitMask(
-      DemandedDstElts.zextOrSelf(NumDstVectors * NumEltsPerDstVec),
-      NumDstVectors);
+      DemandedDstElts.zext(NumDstVectors * NumEltsPerDstVec), NumDstVectors);
   unsigned NumDstVectorsDemanded = DemandedDstVectors.countPopulation();
 
   InstructionCost SingleShuffleCost =
       getShuffleCost(TTI::SK_PermuteSingleSrc, SingleDstVecTy,
                      /*Mask=*/None, /*Index=*/0, /*SubTp=*/nullptr);
   return NumDstVectorsDemanded * SingleShuffleCost;
 }
 

llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp

if (AllocaInst *AI = dyn_cast<AllocaInst>(P)) {
 
       ConstantInt *CS = dyn_cast<ConstantInt>(AI->getArraySize());
       if (!CS)
         return false;
 
       uint64_t TypeSize = DL.getTypeAllocSize(AI->getAllocatedType());
       // Make sure that, even if the multiplication below would wrap as an
       // uint64_t, we still do the right thing.
-      if ((CS->getValue().zextOrSelf(128)*APInt(128, TypeSize)).ugt(MaxSize))
+      if ((CS->getValue().zext(128) * APInt(128, TypeSize)).ugt(MaxSize))
         return false;
       continue;
     }
 
     if (GlobalVariable *GV = dyn_cast<GlobalVariable>(P)) {
       if (!GV->hasDefinitiveInitializer() || !GV->isConstant())
         return false;
 

llvm/lib/Transforms/Scalar/CorrelatedValuePropagation.cpp

static bool narrowSDivOrSRem(BinaryOperator *Instr, LazyValueInfo *LVI) {
   for (auto I : zip(Instr->operands(), CRs)) {
     std::get<1>(I) = LVI->getConstantRange(std::get<0>(I), Instr);
     MinSignedBits = std::max(std::get<1>(I)->getMinSignedBits(), MinSignedBits);
   }
 
   // sdiv/srem is UB if divisor is -1 and divident is INT_MIN, so unless we can
   // prove that such a combination is impossible, we need to bump the bitwidth.
   if (CRs[1]->contains(APInt::getAllOnes(OrigWidth)) &&
-      CRs[0]->contains(
-          APInt::getSignedMinValue(MinSignedBits).sextOrSelf(OrigWidth)))
+      CRs[0]->contains(APInt::getSignedMinValue(MinSignedBits).sext(OrigWidth)))
     ++MinSignedBits;
 
   // Don't shrink below 8 bits wide.
   unsigned NewWidth = std::max<unsigned>(PowerOf2Ceil(MinSignedBits), 8);
 
   // NewWidth might be greater than OrigWidth if OrigWidth is not a power of
   // two.
   if (NewWidth >= OrigWidth)

llvm/lib/Transforms/Vectorize/LoadStoreVectorizer.cpp

if (PtrDelta.isMinSignedValue())
       return false;
     PtrDelta.negate();
     std::swap(OpA, OpB);
   }
   uint64_t Stride = DL.getTypeAllocSize(GTIA.getIndexedType());
   if (PtrDelta.urem(Stride) != 0)
     return false;
   unsigned IdxBitWidth = OpA->getType()->getScalarSizeInBits();
-  APInt IdxDiff = PtrDelta.udiv(Stride).zextOrSelf(IdxBitWidth);
+  APInt IdxDiff = PtrDelta.udiv(Stride).zext(IdxBitWidth);
 
   // Only look through a ZExt/SExt.
   if (!isa<SExtInst>(OpA) && !isa<ZExtInst>(OpA))
     return false;
 
   bool Signed = isa<SExtInst>(OpA);
 
   // At this point A could be a function parameter, i.e. not an instruction

llvm/test/TableGen/VarLenEncoder.td

 // CHECK: {/*NumBits*/41,
 // CHECK-SAME: // FOO16
 // CHECK: {/*NumBits*/57,
 // CHECK-SAME: // FOO32
 // CHECK: UINT64_C(46848), // FOO16
 // CHECK: UINT64_C(46848), // FOO32
 
 // CHECK-LABEL: case ::FOO16: {
-// CHECK: Scratch = Scratch.zextOrSelf(41);
+// CHECK: Scratch = Scratch.zext(41);
 // src.reg
 // CHECK: getMachineOpValue(MI, MI.getOperand(1), /*Pos=*/0, Scratch, Fixups, STI);
 // CHECK: Inst.insertBits(Scratch.extractBits(8, 0), 0);
 // src.offset
 // CHECK: getMachineOpValue(MI, MI.getOperand(2), /*Pos=*/16, Scratch, Fixups, STI);
 // CHECK: Inst.insertBits(Scratch.extractBits(16, 0), 16);
 // 1st dst
 // CHECK: getMachineOpValue(MI, MI.getOperand(0), /*Pos=*/32, Scratch, Fixups, STI);
 // CHECK: Inst.insertBits(Scratch.extractBits(4, 0), 32);
 // 2nd dst
 // CHECK: getMachineOpValue(MI, MI.getOperand(0), /*Pos=*/36, Scratch, Fixups, STI);
 // CHECK: Inst.insertBits(Scratch.extractBits(3, 1), 36);
 // dst w/ custom encoder
 // CHECK: myCustomEncoder(MI, /*OpIdx=*/0, /*Pos=*/39, Scratch, Fixups, STI);
 // CHECK: Inst.insertBits(Scratch.extractBits(2, 0), 39);
 
 // CHECK-LABEL: case ::FOO32: {
-// CHECK: Scratch = Scratch.zextOrSelf(57);
+// CHECK: Scratch = Scratch.zext(57);
 // src.reg
 // CHECK: getMachineOpValue(MI, MI.getOperand(1), /*Pos=*/0, Scratch, Fixups, STI);
 // CHECK: Inst.insertBits(Scratch.extractBits(8, 0), 0);
 // src.offset
 // CHECK: getMachineOpValue(MI, MI.getOperand(2), /*Pos=*/16, Scratch, Fixups, STI);
 // CHECK: Inst.insertBits(Scratch.extractBits(32, 0), 16);
 // 1st dst
 // CHECK: getMachineOpValue(MI, MI.getOperand(0), /*Pos=*/48, Scratch, Fixups, STI);
 // CHECK: Inst.insertBits(Scratch.extractBits(4, 0), 48);
 // 2nd dst
 // CHECK: getMachineOpValue(MI, MI.getOperand(0), /*Pos=*/52, Scratch, Fixups, STI);
 // CHECK: Inst.insertBits(Scratch.extractBits(3, 1), 52);
 // dst w/ custom encoder
 // CHECK: myCustomEncoder(MI, /*OpIdx=*/0, /*Pos=*/55, Scratch, Fixups, STI);
 // CHECK: Inst.insertBits(Scratch.extractBits(2, 0), 55);

llvm/utils/TableGen/VarLenCodeEmitterGen.cpp

std::string VarLenCodeEmitterGen::getInstructionCaseForEncoding(
   size_t BitWidth = VLI.size();
 
   CodeGenInstruction &CGI = Target.getInstruction(R);
 
   std::string Case;
   raw_string_ostream SS(Case);
   // Resize the scratch buffer.
   if (BitWidth && !VLI.isFixedValueOnly())
-    SS.indent(6) << "Scratch = Scratch.zextOrSelf(" << BitWidth << ");\n";
+    SS.indent(6) << "Scratch = Scratch.zext(" << BitWidth << ");\n";
   // Populate based value.
   SS.indent(6) << "Inst = getInstBits(opcode);\n";
 
   // Process each segment in VLI.
   size_t Offset = 0U;
   for (const auto &ES : VLI) {
     unsigned NumBits = ES.BitWidth;
     const Init *Val = ES.Value;

polly/lib/CodeGen/IslExprBuilder.cpp

Value *IslExprBuilder::createInt(__isl_take isl_ast_expr *Expr) {
   APValue = APIntFromVal(Val);
 
   auto BitWidth = APValue.getBitWidth();
   if (BitWidth <= 64)
     T = getType(Expr);
   else
     T = Builder.getIntNTy(BitWidth);
 
-  APValue = APValue.sextOrSelf(T->getBitWidth());
+  APValue = APValue.sext(T->getBitWidth());
   V = ConstantInt::get(T, APValue);
 
   isl_ast_expr_free(Expr);
   return V;
 }
 
 Value *IslExprBuilder::create(__isl_take isl_ast_expr *Expr) {
   switch (isl_ast_expr_get_type(Expr)) {