Clean up usages of asserting vector getters in Type

[ctetreau]

Summary

Remove usages of asserting vector getters in Type in preparation for the
VectorType refactor. The existence of these functions complicates the
refactor while adding little value.

[ctetreau]

Update to mention that this is NFC

[sdesmalen]

llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp

682–683

Can you move this line to just above the check for if (!ArgTy), just to make it clear that it can be nullptr and should not be used in between the definition and that check.

llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp

1825

nit: maybe put the comment above the if statement?

[ctetreau]

Address code review issues

[sdesmalen]

LGTM!

[ctetreau]

remove new usages

llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp

 /// Return true if a constant shift amount is always less than the specified
 /// bit-width. If not, the shift could create poison in the narrower type.
 static bool canNarrowShiftAmt(Constant *C, unsigned BitWidth) {
   if (auto *ScalarC = dyn_cast<ConstantInt>(C))
     return ScalarC->getZExtValue() < BitWidth;
 
   if (C->getType()->isVectorTy()) {
     // Check each element of a constant vector.
-    unsigned NumElts = C->getType()->getVectorNumElements();
+    unsigned NumElts = cast<VectorType>(C->getType())->getNumElements();
     for (unsigned i = 0; i != NumElts; ++i) {
       Constant *Elt = C->getAggregateElement(i);
       if (!Elt)
         return false;
       if (isa<UndefValue>(Elt))
         continue;
       auto *CI = dyn_cast<ConstantInt>(Elt);
       if (!CI || CI->getZExtValue() >= BitWidth)
bool IsFshl = (!SubIsOnLHS && ShiftOpcode0 == BinaryOperator::Shl) ||
                 (SubIsOnLHS && ShiftOpcode1 == BinaryOperator::Shl);
   Intrinsic::ID IID = IsFshl ? Intrinsic::fshl : Intrinsic::fshr;
   Function *F = Intrinsic::getDeclaration(Or.getModule(), IID, Or.getType());
   return IntrinsicInst::Create(F, { ShVal, ShVal, ShAmt });
 }
 
 /// If all elements of two constant vectors are 0/-1 and inverses, return true.
 static bool areInverseVectorBitmasks(Constant *C1, Constant *C2) {
-  unsigned NumElts = C1->getType()->getVectorNumElements();
+  unsigned NumElts = cast<VectorType>(C1->getType())->getNumElements();
   for (unsigned i = 0; i != NumElts; ++i) {
     Constant *EltC1 = C1->getAggregateElement(i);
     Constant *EltC2 = C2->getAggregateElement(i);
     if (!EltC1 || !EltC2)
       return false;
 
     // One element must be all ones, and the other must be all zeros.
     if (!((match(EltC1, m_Zero()) && match(EltC2, m_AllOnes())) ||

llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp

case Intrinsic::x86_avx512_psllv_w_512:
     ShiftLeft = true;
     break;
   }
   assert((LogicalShift || !ShiftLeft) && "Only logical shifts can shift left");
 
   auto Vec = II.getArgOperand(0);
   auto Amt = II.getArgOperand(1);
   auto VT = cast<VectorType>(II.getType());
-  auto SVT = VT->getVectorElementType();
+  auto SVT = VT->getElementType();
   int NumElts = VT->getNumElements();
   int BitWidth = SVT->getIntegerBitWidth();
 
   // If the shift amount is guaranteed to be in-range we can replace it with a
   // generic shift.
   APInt UpperBits =
       APInt::getHighBitsSet(BitWidth, BitWidth - Log2_32(BitWidth));
   if (llvm::MaskedValueIsZero(Amt, UpperBits,
static Value *simplifyX86pack(IntrinsicInst &II,
   Value *Arg0 = II.getArgOperand(0);
   Value *Arg1 = II.getArgOperand(1);
   Type *ResTy = II.getType();
 
   // Fast all undef handling.
   if (isa<UndefValue>(Arg0) && isa<UndefValue>(Arg1))
     return UndefValue::get(ResTy);
 
-  Type *ArgTy = Arg0->getType();
+  auto *ArgTy = cast<VectorType>(Arg0->getType());
   unsigned NumLanes = ResTy->getPrimitiveSizeInBits() / 128;
-  unsigned NumSrcElts = ArgTy->getVectorNumElements();
-  assert(ResTy->getVectorNumElements() == (2 * NumSrcElts) &&
+  unsigned NumSrcElts = ArgTy->getNumElements();
+  assert(cast<VectorType>(ResTy)->getNumElements() == (2 * NumSrcElts) &&
          "Unexpected packing types");
 
   unsigned NumSrcEltsPerLane = NumSrcElts / NumLanes;
   unsigned DstScalarSizeInBits = ResTy->getScalarSizeInBits();
   unsigned SrcScalarSizeInBits = ArgTy->getScalarSizeInBits();
   assert(SrcScalarSizeInBits == (2 * DstScalarSizeInBits) &&
          "Unexpected packing types");
 
static Value *simplifyX86pack(IntrinsicInst &II,
 
   // Truncate to dst size.
   return Builder.CreateTrunc(Shuffle, ResTy);
 }
 
 static Value *simplifyX86movmsk(const IntrinsicInst &II,
                                 InstCombiner::BuilderTy &Builder) {
   Value *Arg = II.getArgOperand(0);
   Type *ResTy = II.getType();
-  Type *ArgTy = Arg->getType();
 
   // movmsk(undef) -> zero as we must ensure the upper bits are zero.
   if (isa<UndefValue>(Arg))
     return Constant::getNullValue(ResTy);
 
+  auto *ArgTy = dyn_cast<VectorType>(Arg->getType());
   // We can't easily peek through x86_mmx types.
-  if (!ArgTy->isVectorTy())
+  if (!ArgTy)
     return nullptr;
 
   // Expand MOVMSK to compare/bitcast/zext:
   // e.g. PMOVMSKB(v16i8 x):
   // %cmp = icmp slt <16 x i8> %x, zeroinitializer
   // %int = bitcast <16 x i1> %cmp to i16
   // %res = zext i16 %int to i32
-  unsigned NumElts = ArgTy->getVectorNumElements();
-  Type *IntegerVecTy = VectorType::getInteger(cast<VectorType>(ArgTy));
+  unsigned NumElts = ArgTy->getNumElements();
+  Type *IntegerVecTy = VectorType::getInteger(ArgTy);
   Type *IntegerTy = Builder.getIntNTy(NumElts);
 
   Value *Res = Builder.CreateBitCast(Arg, IntegerVecTy);
   Res = Builder.CreateICmpSLT(Res, Constant::getNullValue(IntegerVecTy));
   Res = Builder.CreateBitCast(Res, IntegerTy);
   Res = Builder.CreateZExtOrTrunc(Res, ResTy);
   return Res;
 }

 static Value *simplifyX86vpermilvar(const IntrinsicInst &II,
                                     InstCombiner::BuilderTy &Builder) {
   Constant *V = dyn_cast<Constant>(II.getArgOperand(1));
   if (!V)
     return nullptr;
 
   auto *VecTy = cast<VectorType>(II.getType());
   auto *MaskEltTy = Type::getInt32Ty(II.getContext());
-  unsigned NumElts = VecTy->getVectorNumElements();
+  unsigned NumElts = VecTy->getNumElements();
   bool IsPD = VecTy->getScalarType()->isDoubleTy();
   unsigned NumLaneElts = IsPD ? 2 : 4;
   assert(NumElts == 16 || NumElts == 8 || NumElts == 4 || NumElts == 2);
 
   // Construct a shuffle mask from constant integers or UNDEFs.
   Constant *Indexes[16] = {nullptr};
 
   // The intrinsics only read one or two bits, clear the rest.
if (auto *MTI = dyn_cast<AnyMemTransferInst>(MI)) {
       if (Instruction *I = SimplifyAnyMemSet(MSI))
         return I;
     }
 
     if (Changed) return II;
   }
 
   // For vector result intrinsics, use the generic demanded vector support.
-  if (II->getType()->isVectorTy()) {
-    auto VWidth = II->getType()->getVectorNumElements();
+  if (auto *IIVTy = dyn_cast<VectorType>(II->getType())) {
+    auto VWidth = IIVTy->getNumElements();
     APInt UndefElts(VWidth, 0);
     APInt AllOnesEltMask(APInt::getAllOnesValue(VWidth));
     if (Value *V = SimplifyDemandedVectorElts(II, AllOnesEltMask, UndefElts)) {
       if (V != II)
         return replaceInstUsesWith(*II, V);
       return II;
     }
   }
case Intrinsic::ppc_vsx_stxvd2x: {
     Type *OpPtrTy = PointerType::getUnqual(II->getArgOperand(0)->getType());
     Value *Ptr = Builder.CreateBitCast(II->getArgOperand(1), OpPtrTy);
     return new StoreInst(II->getArgOperand(0), Ptr, false, Align(1));
   }
   case Intrinsic::ppc_qpx_qvlfs:
     // Turn PPC QPX qvlfs -> load if the pointer is known aligned.
     if (getOrEnforceKnownAlignment(II->getArgOperand(0), 16, DL, II, &AC,
                                    &DT) >= 16) {
-      Type *VTy = VectorType::get(Builder.getFloatTy(),
-                                  II->getType()->getVectorNumElements());
+      Type *VTy =
+          VectorType::get(Builder.getFloatTy(),
+                          cast<VectorType>(II->getType())->getElementCount());
       Value *Ptr = Builder.CreateBitCast(II->getArgOperand(0),
                                          PointerType::getUnqual(VTy));
       Value *Load = Builder.CreateLoad(VTy, Ptr);
       return new FPExtInst(Load, II->getType());
     }
     break;
   case Intrinsic::ppc_qpx_qvlfd:
     // Turn PPC QPX qvlfd -> load if the pointer is known aligned.
     if (getOrEnforceKnownAlignment(II->getArgOperand(0), 32, DL, II, &AC,
                                    &DT) >= 32) {
       Value *Ptr = Builder.CreateBitCast(II->getArgOperand(0),
                                          PointerType::getUnqual(II->getType()));
       return new LoadInst(II->getType(), Ptr);
     }
     break;
   case Intrinsic::ppc_qpx_qvstfs:
     // Turn PPC QPX qvstfs -> store if the pointer is known aligned.
     if (getOrEnforceKnownAlignment(II->getArgOperand(1), 16, DL, II, &AC,
                                    &DT) >= 16) {
-      Type *VTy = VectorType::get(Builder.getFloatTy(),
-          II->getArgOperand(0)->getType()->getVectorNumElements());
+      Type *VTy = VectorType::get(
+          Builder.getFloatTy(),
+          cast<VectorType>(II->getArgOperand(0)->getType())->getElementCount());
       Value *TOp = Builder.CreateFPTrunc(II->getArgOperand(0), VTy);
       Type *OpPtrTy = PointerType::getUnqual(VTy);
       Value *Ptr = Builder.CreateBitCast(II->getArgOperand(1), OpPtrTy);
       return new StoreInst(TOp, Ptr);
     }
     break;
   case Intrinsic::ppc_qpx_qvstfd:
     // Turn PPC QPX qvstfd -> store if the pointer is known aligned.
Instruction *InstCombiner::visitCallInst(CallInst &CI) {
   case Intrinsic::x86_avx512_cvttss2usi64:
   case Intrinsic::x86_avx512_cvttsd2si:
   case Intrinsic::x86_avx512_cvttsd2si64:
   case Intrinsic::x86_avx512_cvttsd2usi:
   case Intrinsic::x86_avx512_cvttsd2usi64: {
     // These intrinsics only demand the 0th element of their input vectors. If
     // we can simplify the input based on that, do so now.
     Value *Arg = II->getArgOperand(0);
-    unsigned VWidth = Arg->getType()->getVectorNumElements();
+    unsigned VWidth = cast<VectorType>(Arg->getType())->getNumElements();
     if (Value *V = SimplifyDemandedVectorEltsLow(Arg, VWidth, 1))
       return replaceOperand(*II, 0, V);
     break;
   }
 
   case Intrinsic::x86_mmx_pmovmskb:
   case Intrinsic::x86_sse_movmsk_ps:
   case Intrinsic::x86_sse2_movmsk_pd:
Instruction *InstCombiner::visitCallInst(CallInst &CI) {
   case Intrinsic::x86_avx512_vcomi_sd:
   case Intrinsic::x86_avx512_mask_cmp_ss:
   case Intrinsic::x86_avx512_mask_cmp_sd: {
     // These intrinsics only demand the 0th element of their input vectors. If
     // we can simplify the input based on that, do so now.
     bool MadeChange = false;
     Value *Arg0 = II->getArgOperand(0);
     Value *Arg1 = II->getArgOperand(1);
-    unsigned VWidth = Arg0->getType()->getVectorNumElements();
+    unsigned VWidth = cast<VectorType>(Arg0->getType())->getNumElements();
     if (Value *V = SimplifyDemandedVectorEltsLow(Arg0, VWidth, 1)) {
       replaceOperand(*II, 0, V);
       MadeChange = true;
     }
     if (Value *V = SimplifyDemandedVectorEltsLow(Arg1, VWidth, 1)) {
       replaceOperand(*II, 1, V);
       MadeChange = true;
     }
case Intrinsic::x86_avx512_psll_w_512: {
     if (Value *V = simplifyX86immShift(*II, Builder))
       return replaceInstUsesWith(*II, V);
 
     // SSE2/AVX2 uses only the first 64-bits of the 128-bit vector
     // operand to compute the shift amount.
     Value *Arg1 = II->getArgOperand(1);
     assert(Arg1->getType()->getPrimitiveSizeInBits() == 128 &&
            "Unexpected packed shift size");
-    unsigned VWidth = Arg1->getType()->getVectorNumElements();
+    unsigned VWidth = cast<VectorType>(Arg1->getType())->getNumElements();
 
     if (Value *V = SimplifyDemandedVectorEltsLow(Arg1, VWidth, VWidth / 2))
       return replaceOperand(*II, 1, V);
     break;
   }
 
   case Intrinsic::x86_avx2_psllv_d:
   case Intrinsic::x86_avx2_psllv_d_256:

   case Intrinsic::x86_pclmulqdq_256:
   case Intrinsic::x86_pclmulqdq_512: {
     if (auto *C = dyn_cast<ConstantInt>(II->getArgOperand(2))) {
       unsigned Imm = C->getZExtValue();
 
       bool MadeChange = false;
       Value *Arg0 = II->getArgOperand(0);
       Value *Arg1 = II->getArgOperand(1);
-      unsigned VWidth = Arg0->getType()->getVectorNumElements();
+      unsigned VWidth = cast<VectorType>(Arg0->getType())->getNumElements();
 
       APInt UndefElts1(VWidth, 0);
       APInt DemandedElts1 = APInt::getSplat(VWidth,
                                             APInt(2, (Imm & 0x01) ? 2 : 1));
       if (Value *V = SimplifyDemandedVectorElts(Arg0, DemandedElts1,
                                                 UndefElts1)) {
         replaceOperand(*II, 0, V);
         MadeChange = true;

   case Intrinsic::x86_sse41_insertps:
     if (Value *V = simplifyX86insertps(*II, Builder))
       return replaceInstUsesWith(*II, V);
     break;
 
   case Intrinsic::x86_sse4a_extrq: {
     Value *Op0 = II->getArgOperand(0);
     Value *Op1 = II->getArgOperand(1);
-    unsigned VWidth0 = Op0->getType()->getVectorNumElements();
-    unsigned VWidth1 = Op1->getType()->getVectorNumElements();
+    unsigned VWidth0 = cast<VectorType>(Op0->getType())->getNumElements();
+    unsigned VWidth1 = cast<VectorType>(Op1->getType())->getNumElements();
     assert(Op0->getType()->getPrimitiveSizeInBits() == 128 &&
            Op1->getType()->getPrimitiveSizeInBits() == 128 && VWidth0 == 2 &&
            VWidth1 == 16 && "Unexpected operand sizes");
 
     // See if we're dealing with constant values.
     Constant *C1 = dyn_cast<Constant>(Op1);
     ConstantInt *CILength =
         C1 ? dyn_cast_or_null<ConstantInt>(C1->getAggregateElement((unsigned)0))
if (MadeChange)
       return II;
     break;
   }
 
   case Intrinsic::x86_sse4a_extrqi: {
     // EXTRQI: Extract Length bits starting from Index. Zero pad the remaining
     // bits of the lower 64-bits. The upper 64-bits are undefined.
     Value *Op0 = II->getArgOperand(0);
-    unsigned VWidth = Op0->getType()->getVectorNumElements();
+    unsigned VWidth = cast<VectorType>(Op0->getType())->getNumElements();
     assert(Op0->getType()->getPrimitiveSizeInBits() == 128 && VWidth == 2 &&
            "Unexpected operand size");
 
     // See if we're dealing with constant values.
     ConstantInt *CILength = dyn_cast<ConstantInt>(II->getArgOperand(1));
     ConstantInt *CIIndex = dyn_cast<ConstantInt>(II->getArgOperand(2));
 
     // Attempt to simplify to a constant or shuffle vector.
     if (Value *V = simplifyX86extrq(*II, Op0, CILength, CIIndex, Builder))
       return replaceInstUsesWith(*II, V);
 
     // EXTRQI only uses the lowest 64-bits of the first 128-bit vector
     // operand.
     if (Value *V = SimplifyDemandedVectorEltsLow(Op0, VWidth, 1))
       return replaceOperand(*II, 0, V);
     break;
   }
 
   case Intrinsic::x86_sse4a_insertq: {
     Value *Op0 = II->getArgOperand(0);
     Value *Op1 = II->getArgOperand(1);
-    unsigned VWidth = Op0->getType()->getVectorNumElements();
+    unsigned VWidth = cast<VectorType>(Op0->getType())->getNumElements();
     assert(Op0->getType()->getPrimitiveSizeInBits() == 128 &&
            Op1->getType()->getPrimitiveSizeInBits() == 128 && VWidth == 2 &&
-           Op1->getType()->getVectorNumElements() == 2 &&
+           cast<VectorType>(Op1->getType())->getNumElements() == 2 &&
            "Unexpected operand size");
 
     // See if we're dealing with constant values.
     Constant *C1 = dyn_cast<Constant>(Op1);
     ConstantInt *CI11 =
         C1 ? dyn_cast_or_null<ConstantInt>(C1->getAggregateElement((unsigned)1))
            : nullptr;
 

   }
 
   case Intrinsic::x86_sse4a_insertqi: {
     // INSERTQI: Extract lowest Length bits from lower half of second source and
     // insert over first source starting at Index bit. The upper 64-bits are
     // undefined.
     Value *Op0 = II->getArgOperand(0);
     Value *Op1 = II->getArgOperand(1);
-    unsigned VWidth0 = Op0->getType()->getVectorNumElements();
-    unsigned VWidth1 = Op1->getType()->getVectorNumElements();
+    unsigned VWidth0 = cast<VectorType>(Op0->getType())->getNumElements();
+    unsigned VWidth1 = cast<VectorType>(Op1->getType())->getNumElements();
     assert(Op0->getType()->getPrimitiveSizeInBits() == 128 &&
            Op1->getType()->getPrimitiveSizeInBits() == 128 && VWidth0 == 2 &&
            VWidth1 == 2 && "Unexpected operand sizes");
 
     // See if we're dealing with constant values.
     ConstantInt *CILength = dyn_cast<ConstantInt>(II->getArgOperand(2));
     ConstantInt *CIIndex = dyn_cast<ConstantInt>(II->getArgOperand(3));
 
case Intrinsic::x86_avx2_pblendvb: {
     Mask = peekThroughBitcast(Mask);
     if (match(Mask, m_SExt(m_Value(BoolVec))) &&
         BoolVec->getType()->isVectorTy() &&
         BoolVec->getType()->getScalarSizeInBits() == 1) {
       assert(Mask->getType()->getPrimitiveSizeInBits() ==
              II->getType()->getPrimitiveSizeInBits() &&
              "Not expecting mask and operands with different sizes");
 
-      unsigned NumMaskElts = Mask->getType()->getVectorNumElements();
-      unsigned NumOperandElts = II->getType()->getVectorNumElements();
+      unsigned NumMaskElts =
+          cast<VectorType>(Mask->getType())->getNumElements();
+      unsigned NumOperandElts =
+          cast<VectorType>(II->getType())->getNumElements();
       if (NumMaskElts == NumOperandElts)
         return SelectInst::Create(BoolVec, Op1, Op0);
 
       // If the mask has less elements than the operands, each mask bit maps to
       // multiple elements of the operands. Bitcast back and forth.
       if (NumMaskElts < NumOperandElts) {
         Value *CastOp0 = Builder.CreateBitCast(Op0, Mask->getType());
         Value *CastOp1 = Builder.CreateBitCast(Op1, Mask->getType());

   case Intrinsic::ppc_altivec_vperm:
     // Turn vperm(V1,V2,mask) -> shuffle(V1,V2,mask) if mask is a constant.
     // Note that ppc_altivec_vperm has a big-endian bias, so when creating
     // a vectorshuffle for little endian, we must undo the transformation
     // performed on vec_perm in altivec.h.  That is, we must complement
     // the permutation mask with respect to 31 and reverse the order of
     // V1 and V2.
     if (Constant *Mask = dyn_cast<Constant>(II->getArgOperand(2))) {
-      assert(Mask->getType()->getVectorNumElements() == 16 &&
+      assert(cast<VectorType>(Mask->getType())->getNumElements() == 16 &&
              "Bad type for intrinsic!");
 
       // Check that all of the elements are integer constants or undefs.
       bool AllEltsOk = true;
       for (unsigned i = 0; i != 16; ++i) {
         Constant *Elt = Mask->getAggregateElement(i);
         if (!Elt || !(isa<ConstantInt>(Elt) || isa<UndefValue>(Elt))) {
           AllEltsOk = false;
case Intrinsic::arm_mve_pred_i2v: {
     Constant *XorMask;
     if (match(Arg,
               m_Xor(m_Intrinsic<Intrinsic::arm_mve_pred_v2i>(m_Value(ArgArg)),
                     m_Constant(XorMask))) &&
         II->getType() == ArgArg->getType()) {
       if (auto *CI = dyn_cast<ConstantInt>(XorMask)) {
         if (CI->getValue().trunc(16).isAllOnesValue()) {
           auto TrueVector = Builder.CreateVectorSplat(
-              II->getType()->getVectorNumElements(), Builder.getTrue());
+              cast<VectorType>(II->getType())->getNumElements(),
+              Builder.getTrue());
           return BinaryOperator::Create(Instruction::Xor, ArgArg, TrueVector);
         }
       }
     }
     KnownBits ScalarKnown(32);
     if (SimplifyDemandedBits(II, 0, APInt::getLowBitsSet(32, 16),
                              ScalarKnown, 0))
       return II;

llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp

Instruction *InstCombiner::visitTrunc(TruncInst &CI) {
   //
   // Example (little endian):
   //   trunc (extractelement <4 x i64> %X, 0) to i32
   //   --->
   //   extractelement <8 x i32> (bitcast <4 x i64> %X to <8 x i32>), i32 0
   Value *VecOp;
   if (match(Src,
             m_OneUse(m_ExtractElement(m_Value(VecOp), m_ConstantInt(Cst))))) {
-    Type *VecOpTy = VecOp->getType();
+    auto *VecOpTy = cast<VectorType>(VecOp->getType());
     unsigned DestScalarSize = DestTy->getScalarSizeInBits();
     unsigned VecOpScalarSize = VecOpTy->getScalarSizeInBits();
-    unsigned VecNumElts = VecOpTy->getVectorNumElements();
+    unsigned VecNumElts = VecOpTy->getNumElements();
 
     // A badly fit destination size would result in an invalid cast.
     if (VecOpScalarSize % DestScalarSize == 0) {
       uint64_t TruncRatio = VecOpScalarSize / DestScalarSize;
       uint64_t BitCastNumElts = VecNumElts * TruncRatio;
       uint64_t VecOpIdx = Cst->getZExtValue();
       uint64_t NewIdx = DL.isBigEndian() ? (VecOpIdx + 1) * TruncRatio - 1
                                          : VecOpIdx * TruncRatio;
static Type *shrinkFPConstant(ConstantFP *CFP) {
   return nullptr;
 }
 
 // Determine if this is a vector of ConstantFPs and if so, return the minimal
 // type we can safely truncate all elements to.
 // TODO: Make these support undef elements.
 static Type *shrinkFPConstantVector(Value *V) {
   auto *CV = dyn_cast<Constant>(V);
-  if (!CV || !CV->getType()->isVectorTy())
+  auto *CVVTy = dyn_cast<VectorType>(V->getType());
+  if (!CV || !CVVTy)
     return nullptr;
 
   Type *MinType = nullptr;
 
-  unsigned NumElts = CV->getType()->getVectorNumElements();
+  unsigned NumElts = CVVTy->getNumElements();
   for (unsigned i = 0; i != NumElts; ++i) {
     auto *CFP = dyn_cast_or_null<ConstantFP>(CV->getAggregateElement(i));
     if (!CFP)
       return nullptr;
 
     Type *T = shrinkFPConstant(CFP);
     if (!T)
       return nullptr;

 Instruction *InstCombiner::visitIntToPtr(IntToPtrInst &CI) {
   // If the source integer type is not the intptr_t type for this target, do a
   // trunc or zext to the intptr_t type, then inttoptr of it.  This allows the
   // cast to be exposed to other transforms.
   unsigned AS = CI.getAddressSpace();
   if (CI.getOperand(0)->getType()->getScalarSizeInBits() !=
       DL.getPointerSizeInBits(AS)) {
     Type *Ty = DL.getIntPtrType(CI.getContext(), AS);
-    if (CI.getType()->isVectorTy()) // Handle vectors of pointers.
-      Ty = VectorType::get(Ty, CI.getType()->getVectorNumElements());
+    // Handle vectors of pointers.
+    if (auto *CIVTy = dyn_cast<VectorType>(CI.getType()))
+      Ty = VectorType::get(Ty, CIVTy->getElementCount());
 
     Value *P = Builder.CreateZExtOrTrunc(CI.getOperand(0), Ty);
     return new IntToPtrInst(P, CI.getType());
   }
 
   if (Instruction *I = commonCastTransforms(CI))
     return I;
 
Instruction *InstCombiner::visitPtrToInt(PtrToIntInst &CI) {
 
   Type *Ty = CI.getType();
   unsigned AS = CI.getPointerAddressSpace();
 
   if (Ty->getScalarSizeInBits() == DL.getPointerSizeInBits(AS))
     return commonPointerCastTransforms(CI);
 
   Type *PtrTy = DL.getIntPtrType(CI.getContext(), AS);
-  if (Ty->isVectorTy()) // Handle vectors of pointers.
-    PtrTy = VectorType::get(PtrTy, Ty->getVectorNumElements());
+  if (auto *VTy = dyn_cast<VectorType>(Ty)) // Handle vectors of pointers.
+    PtrTy = VectorType::get(PtrTy, VTy->getNumElements());
 
   Value *P = Builder.CreatePtrToInt(CI.getOperand(0), PtrTy);
   return CastInst::CreateIntegerCast(P, Ty, /*isSigned=*/false);
 }
 
 /// This input value (which is known to have vector type) is being zero extended
 /// or truncated to the specified vector type. Since the zext/trunc is done
 /// using an integer type, we have a (bitcast(cast(bitcast))) pattern,
static Instruction *foldBitCastSelect(BitCastInst &BitCast,
   Value *Cond, *TVal, *FVal;
   if (!match(BitCast.getOperand(0),
              m_OneUse(m_Select(m_Value(Cond), m_Value(TVal), m_Value(FVal)))))
     return nullptr;
 
   // A vector select must maintain the same number of elements in its operands.
   Type *CondTy = Cond->getType();
   Type *DestTy = BitCast.getType();
-  if (CondTy->isVectorTy()) {
+  if (auto *CondVTy = dyn_cast<VectorType>(CondTy)) {
     if (!DestTy->isVectorTy())
       return nullptr;
-    if (DestTy->getVectorNumElements() != CondTy->getVectorNumElements())
+    if (cast<VectorType>(DestTy)->getNumElements() != CondVTy->getNumElements())
       return nullptr;
   }
 
   // FIXME: This transform is restricted from changing the select between
   // scalars and vectors to avoid backend problems caused by creating
   // potentially illegal operations. If a fix-up is added to handle that
   // situation, we can remove this check.
   if (DestTy->isVectorTy() != TVal->getType()->isVectorTy())
if (VectorType *SrcVTy = dyn_cast<VectorType>(SrcTy)) {
     }
   }
 
   if (auto *Shuf = dyn_cast<ShuffleVectorInst>(Src)) {
     // Okay, we have (bitcast (shuffle ..)).  Check to see if this is
     // a bitcast to a vector with the same # elts.
     Value *ShufOp0 = Shuf->getOperand(0);
     Value *ShufOp1 = Shuf->getOperand(1);
-    unsigned NumShufElts = Shuf->getType()->getVectorNumElements();
-    unsigned NumSrcVecElts = ShufOp0->getType()->getVectorNumElements();
+    unsigned NumShufElts = Shuf->getType()->getNumElements();
+    unsigned NumSrcVecElts =
+        cast<VectorType>(ShufOp0->getType())->getNumElements();
     if (Shuf->hasOneUse() && DestTy->isVectorTy() &&
-        DestTy->getVectorNumElements() == NumShufElts &&
+        cast<VectorType>(DestTy)->getNumElements() == NumShufElts &&
         NumShufElts == NumSrcVecElts) {
       BitCastInst *Tmp;
       // If either of the operands is a cast from CI.getType(), then
       // evaluating the shuffle in the casted destination's type will allow
       // us to eliminate at least one cast.
       if (((Tmp = dyn_cast<BitCastInst>(ShufOp0)) &&
            Tmp->getOperand(0)->getType() == DestTy) ||
           ((Tmp = dyn_cast<BitCastInst>(ShufOp1)) &&

llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp

if (GEPLHS->isInBounds() && ICmpInst::isEquality(Cond) &&
     //
     // In general, we're allowed to make values less poison (i.e. remove
     //   sources of full UB), so in this case, we just select between the two
     //   non-poison cases (1 and 4 above).
     //
     // For vectors, we apply the same reasoning on a per-lane basis.
     auto *Base = GEPLHS->getPointerOperand();
     if (GEPLHS->getType()->isVectorTy() && Base->getType()->isPointerTy()) {
-      int NumElts = GEPLHS->getType()->getVectorNumElements();
+      int NumElts = cast<VectorType>(GEPLHS->getType())->getNumElements();
       Base = Builder.CreateVectorSplat(NumElts, Base);
     }
     return new ICmpInst(Cond, Base,
                         ConstantExpr::getPointerBitCastOrAddrSpaceCast(
                             cast<Constant>(RHS), Base->getType()));
   } else if (GEPOperator *GEPRHS = dyn_cast<GEPOperator>(RHS)) {
     // If the base pointers are different, but the indices are the same, just
     // compare the base pointer.
Instruction *InstCombiner::foldICmpAndConstant(ICmpInst &Cmp,
   // (X & C2) == 0 -> (trunc X) >= 0
   // (X & C2) != 0 -> (trunc X) <  0
   //   iff C2 is a power of 2 and it masks the sign bit of a legal integer type.
   const APInt *C2;
   if (And->hasOneUse() && C.isNullValue() && match(Y, m_APInt(C2))) {
     int32_t ExactLogBase2 = C2->exactLogBase2();
     if (ExactLogBase2 != -1 && DL.isLegalInteger(ExactLogBase2 + 1)) {
       Type *NTy = IntegerType::get(Cmp.getContext(), ExactLogBase2 + 1);
-      if (And->getType()->isVectorTy())
-        NTy = VectorType::get(NTy, And->getType()->getVectorNumElements());
+      if (auto *AndVTy = dyn_cast<VectorType>(And->getType()))
+        NTy = VectorType::get(NTy, AndVTy->getNumElements());
       Value *Trunc = Builder.CreateTrunc(X, NTy);
       auto NewPred = Cmp.getPredicate() == CmpInst::ICMP_EQ ? CmpInst::ICMP_SGE
                                                             : CmpInst::ICMP_SLT;
       return new ICmpInst(NewPred, Trunc, Constant::getNullValue(NTy));
     }
   }
 
   return nullptr;
Instruction *InstCombiner::foldICmpShlConstant(ICmpInst &Cmp,
   // Transform the shl to a trunc if (trunc (C>>N)) has no loss and M-N.
   // This enables us to get rid of the shift in favor of a trunc that may be
   // free on the target. It has the additional benefit of comparing to a
   // smaller constant that may be more target-friendly.
   unsigned Amt = ShiftAmt->getLimitedValue(TypeBits - 1);
   if (Shl->hasOneUse() && Amt != 0 && C.countTrailingZeros() >= Amt &&
       DL.isLegalInteger(TypeBits - Amt)) {
     Type *TruncTy = IntegerType::get(Cmp.getContext(), TypeBits - Amt);
-    if (ShType->isVectorTy())
-      TruncTy = VectorType::get(TruncTy, ShType->getVectorNumElements());
+    if (auto *ShVTy = dyn_cast<VectorType>(ShType))
+      TruncTy = VectorType::get(TruncTy, ShVTy->getNumElements());
     Constant *NewC =
         ConstantInt::get(TruncTy, C.ashr(*ShiftAmt).trunc(TypeBits - Amt));
     return new ICmpInst(Pred, Builder.CreateTrunc(X, TruncTy), NewC);
   }
 
   return nullptr;
 }
 
if (Bitcast->getSrcTy()->getScalarSizeInBits() ==
     if (!BCSrcOp->getType()->isPPC_FP128Ty() && match(Op1, m_APInt(C)) &&
         Bitcast->hasOneUse() && isSignBitCheck(Pred, *C, TrueIfSigned)) {
       if (match(BCSrcOp, m_FPExt(m_Value(X))) ||
           match(BCSrcOp, m_FPTrunc(m_Value(X)))) {
         // (bitcast (fpext/fptrunc X)) to iX) < 0 --> (bitcast X to iY) < 0
         // (bitcast (fpext/fptrunc X)) to iX) > -1 --> (bitcast X to iY) > -1
         Type *XType = X->getType();
         Type *NewType = Builder.getIntNTy(XType->getScalarSizeInBits());
-        if (XType->isVectorTy())
-          NewType = VectorType::get(NewType, XType->getVectorNumElements());
+        if (auto *XVTy = dyn_cast<VectorType>(XType))
+          NewType = VectorType::get(NewType, XVTy->getNumElements());
         Value *NewBitcast = Builder.CreateBitCast(X, NewType);
         if (TrueIfSigned)
           return new ICmpInst(ICmpInst::ICMP_SLT, NewBitcast,
                               ConstantInt::getNullValue(NewType));
         else
           return new ICmpInst(ICmpInst::ICMP_SGT, NewBitcast,
                               ConstantInt::getAllOnesValue(NewType));
       }
static Value *foldICmpWithLowBitMaskedVal(ICmpInst &I,
   }
 
   // The mask value may be a vector constant that has undefined elements. But it
   // may not be safe to propagate those undefs into the new compare, so replace
   // those elements by copying an existing, defined, and safe scalar constant.
   Type *OpTy = M->getType();
   auto *VecC = dyn_cast<Constant>(M);
   if (OpTy->isVectorTy() && VecC && VecC->containsUndefElement()) {
+    auto *OpVTy = cast<VectorType>(OpTy);
     Constant *SafeReplacementConstant = nullptr;
-    for (unsigned i = 0, e = OpTy->getVectorNumElements(); i != e; ++i) {
+    for (unsigned i = 0, e = OpVTy->getNumElements(); i != e; ++i) {
       if (!isa<UndefValue>(VecC->getAggregateElement(i))) {
         SafeReplacementConstant = VecC->getAggregateElement(i);
         break;
       }
     }
     assert(SafeReplacementConstant && "Failed to find undef replacement");
     M = Constant::replaceUndefsWith(VecC, SafeReplacementConstant);
   }
auto ConstantIsOk = [WillIncrement, IsSigned](ConstantInt *C) {
     return WillIncrement ? !C->isMaxValue(IsSigned) : !C->isMinValue(IsSigned);
   };
 
   Constant *SafeReplacementConstant = nullptr;
   if (auto *CI = dyn_cast<ConstantInt>(C)) {
     // Bail out if the constant can't be safely incremented/decremented.
     if (!ConstantIsOk(CI))
       return llvm::None;
-  } else if (Type->isVectorTy()) {
-    unsigned NumElts = Type->getVectorNumElements();
+  } else if (auto *VTy = dyn_cast<VectorType>(Type)) {
+    unsigned NumElts = VTy->getNumElements();
     for (unsigned i = 0; i != NumElts; ++i) {
       Constant *Elt = C->getAggregateElement(i);
       if (!Elt)
         return llvm::None;
 
       if (isa<UndefValue>(Elt))
         continue;
 
static Instruction *foldVectorCmp(CmpInst &Cmp,
 
   // Length-changing splats are ok, so adjust the constants as needed:
   // cmp (shuffle V1, M), C --> shuffle (cmp V1, C'), M
   Constant *ScalarC = C->getSplatValue(/* AllowUndefs */ true);
   int MaskSplatIndex;
   if (ScalarC && match(M, m_SplatOrUndefMask(MaskSplatIndex))) {
     // We allow undefs in matching, but this transform removes those for safety.
     // Demanded elements analysis should be able to recover some/all of that.
-    C = ConstantVector::getSplat(V1Ty->getVectorElementCount(), ScalarC);
+    C = ConstantVector::getSplat(cast<VectorType>(V1Ty)->getElementCount(),
+                                 ScalarC);
     SmallVector<int, 8> NewM(M.size(), MaskSplatIndex);
     Value *NewCmp = IsFP ? Builder.CreateFCmp(Pred, V1, C)
                          : Builder.CreateICmp(Pred, V1, C);
     return new ShuffleVectorInst(NewCmp, UndefValue::get(NewCmp->getType()),
                                  NewM);
   }
 
   return nullptr;

llvm/lib/Transforms/InstCombine/InstCombineInternal.h

 }
 
 /// Some binary operators require special handling to avoid poison and undefined
 /// behavior. If a constant vector has undef elements, replace those undefs with
 /// identity constants if possible because those are always safe to execute.
 /// If no identity constant exists, replace undef with some other safe constant.
 static inline Constant *getSafeVectorConstantForBinop(
       BinaryOperator::BinaryOps Opcode, Constant *In, bool IsRHSConstant) {
-  assert(In->getType()->isVectorTy() && "Not expecting scalars here");
+  auto *InVTy = dyn_cast<VectorType>(In->getType());
+  assert(InVTy && "Not expecting scalars here");
 
-  Type *EltTy = In->getType()->getVectorElementType();
+  Type *EltTy = InVTy->getElementType();
   auto *SafeC = ConstantExpr::getBinOpIdentity(Opcode, EltTy, IsRHSConstant);
   if (!SafeC) {
     // TODO: Should this be available as a constant utility function? It is
     // similar to getBinOpAbsorber().
     if (IsRHSConstant) {
       switch (Opcode) {
       case Instruction::SRem: // X % 1 = 0
       case Instruction::URem: // X %u 1 = 0
if (IsRHSConstant) {
         SafeC = Constant::getNullValue(EltTy);
         break;
       default:
         llvm_unreachable("Expected to find identity constant for opcode");
       }
     }
   }
   assert(SafeC && "Must have safe constant for binop");
-  unsigned NumElts = In->getType()->getVectorNumElements();
+  unsigned NumElts = InVTy->getNumElements();
   SmallVector<Constant *, 16> Out(NumElts);
   for (unsigned i = 0; i != NumElts; ++i) {
     Constant *C = In->getAggregateElement(i);
     Out[i] = isa<UndefValue>(C) ? SafeC : C;
   }
   return ConstantVector::get(Out);
 }
 

llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp

static Instruction *combineLoadToOperationType(InstCombiner &IC, LoadInst &LI) {
   // Try to canonicalize loads which are only ever stored to operate over
   // integers instead of any other type. We only do this when the loaded type
   // is sized and has a size exactly the same as its store size and the store
   // size is a legal integer type.
   // Do not perform canonicalization if minmax pattern is found (to avoid
   // infinite loop).
   Type *Dummy;
   if (!Ty->isIntegerTy() && Ty->isSized() &&
-      !(Ty->isVectorTy() && Ty->getVectorIsScalable()) &&
+      !(Ty->isVectorTy() && cast<VectorType>(Ty)->isScalable()) &&
       DL.isLegalInteger(DL.getTypeStoreSizeInBits(Ty)) &&
-      DL.typeSizeEqualsStoreSize(Ty) &&
-      !DL.isNonIntegralPointerType(Ty) &&
+      DL.typeSizeEqualsStoreSize(Ty) && !DL.isNonIntegralPointerType(Ty) &&
       !isMinMaxWithLoads(
           peekThroughBitcast(LI.getPointerOperand(), /*OneUseOnly=*/true),
           Dummy)) {
     if (all_of(LI.users(), [&LI](User *U) {
           auto *SI = dyn_cast<StoreInst>(U);
           return SI && SI->getPointerOperand() != &LI &&
                  !SI->getPointerOperand()->isSwiftError();
         })) {

llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp

static Constant *getLogBase2(Type *Ty, Constant *C) {
   const APInt *IVal;
   if (match(C, m_APInt(IVal)) && IVal->isPowerOf2())
     return ConstantInt::get(Ty, IVal->logBase2());
 
   if (!Ty->isVectorTy())
     return nullptr;
 
   SmallVector<Constant *, 4> Elts;
-  for (unsigned I = 0, E = Ty->getVectorNumElements(); I != E; ++I) {
+  for (unsigned I = 0, E = cast<VectorType>(Ty)->getNumElements(); I != E;
+       ++I) {
     Constant *Elt = C->getAggregateElement(I);
     if (!Elt)
       return nullptr;
     if (isa<UndefValue>(Elt)) {
       Elts.push_back(UndefValue::get(Ty->getScalarType()));
       continue;
     }
     if (!match(Elt, m_APInt(IVal)) || !IVal->isPowerOf2())
if (MaskedValueIsZero(Op1, Mask, 0, &I) &&
       MaskedValueIsZero(Op0, Mask, 0, &I)) {
     // X srem Y -> X urem Y, iff X and Y don't have sign bit set
     return BinaryOperator::CreateURem(Op0, Op1, I.getName());
   }
 
   // If it's a constant vector, flip any negative values positive.
   if (isa<ConstantVector>(Op1) || isa<ConstantDataVector>(Op1)) {
     Constant *C = cast<Constant>(Op1);
-    unsigned VWidth = C->getType()->getVectorNumElements();
+    unsigned VWidth = cast<VectorType>(C->getType())->getNumElements();
 
     bool hasNegative = false;
     bool hasMissing = false;
     for (unsigned i = 0; i != VWidth; ++i) {
       Constant *Elt = C->getAggregateElement(i);
       if (!Elt) {
         hasMissing = true;
         break;

llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp

Instruction *InstCombiner::foldSelectOpOp(SelectInst &SI, Instruction *TI,
   Type *CondTy = Cond->getType();
   if (TI->getNumOperands() == 1 && TI->isCast()) {
     Type *FIOpndTy = FI->getOperand(0)->getType();
     if (TI->getOperand(0)->getType() != FIOpndTy)
       return nullptr;
 
     // The select condition may be a vector. We may only change the operand
     // type if the vector width remains the same (and matches the condition).
-    if (CondTy->isVectorTy()) {
+    if (auto *CondVTy = dyn_cast<VectorType>(CondTy)) {
       if (!FIOpndTy->isVectorTy())
         return nullptr;
-      if (CondTy->getVectorNumElements() != FIOpndTy->getVectorNumElements())
+      if (CondVTy->getNumElements() !=
+          cast<VectorType>(FIOpndTy)->getNumElements())
         return nullptr;
 
       // TODO: If the backend knew how to deal with casts better, we could
       // remove this limitation. For now, there's too much potential to create
       // worse codegen by promoting the select ahead of size-altering casts
       // (PR28160).
       //
       // Note that ValueTracking's matchSelectPattern() looks through casts

 /// Try to transform a vector select with a constant condition vector into a
 /// shuffle for easier combining with other shuffles and insert/extract.
 static Instruction *canonicalizeSelectToShuffle(SelectInst &SI) {
   Value *CondVal = SI.getCondition();
   Constant *CondC;
   if (!CondVal->getType()->isVectorTy() || !match(CondVal, m_Constant(CondC)))
     return nullptr;
 
-  unsigned NumElts = CondVal->getType()->getVectorNumElements();
+  unsigned NumElts = cast<VectorType>(CondVal->getType())->getNumElements();
   SmallVector<Constant *, 16> Mask;
   Mask.reserve(NumElts);
   Type *Int32Ty = Type::getInt32Ty(CondVal->getContext());
   for (unsigned i = 0; i != NumElts; ++i) {
     Constant *Elt = CondC->getAggregateElement(i);
     if (!Elt)
       return nullptr;
 

 }
 
 /// If we have a select of vectors with a scalar condition, try to convert that
 /// to a vector select by splatting the condition. A splat may get folded with
 /// other operations in IR and having all operands of a select be vector types
 /// is likely better for vector codegen.
 static Instruction *canonicalizeScalarSelectOfVecs(
     SelectInst &Sel, InstCombiner &IC) {
-  Type *Ty = Sel.getType();
-  if (!Ty->isVectorTy())
+  auto *Ty = dyn_cast<VectorType>(Sel.getType());
+  if (!Ty)
     return nullptr;
 
   // We can replace a single-use extract with constant index.
   Value *Cond = Sel.getCondition();
   if (!match(Cond, m_OneUse(m_ExtractElement(m_Value(), m_ConstantInt()))))
     return nullptr;
 
   // select (extelt V, Index), T, F --> select (splat V, Index), T, F
   // Splatting the extracted condition reduces code (we could directly create a
   // splat shuffle of the source vector to eliminate the intermediate step).
-  unsigned NumElts = Ty->getVectorNumElements();
+  unsigned NumElts = Ty->getNumElements();
   return IC.replaceOperand(Sel, 0, IC.Builder.CreateVectorSplat(NumElts, Cond));
 }
 
 /// Reuse bitcasted operands between a compare and select:
 /// select (cmp (bitcast C), (bitcast D)), (bitcast' C), (bitcast' D) -->
 /// bitcast (select (cmp (bitcast C), (bitcast D)), (bitcast C), (bitcast D))
 static Instruction *foldSelectCmpBitcasts(SelectInst &Sel,
                                           InstCombiner::BuilderTy &Builder) {

llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp

Value *InstCombiner::simplifyAMDGCNMemoryIntrinsicDemanded(IntrinsicInst *II,
                                                            int DMaskIdx) {
 
   // FIXME: Allow v3i16/v3f16 in buffer intrinsics when the types are fully supported.
   if (DMaskIdx < 0 &&
       II->getType()->getScalarSizeInBits() != 32 &&
       DemandedElts.getActiveBits() == 3)
     return nullptr;
 
-  unsigned VWidth = II->getType()->getVectorNumElements();
+  auto *IIVTy = cast<VectorType>(II->getType());
+  unsigned VWidth = IIVTy->getNumElements();
   if (VWidth == 1)
     return nullptr;
 
   IRBuilderBase::InsertPointGuard Guard(Builder);
   Builder.SetInsertPoint(II);
 
   // Assume the arguments are unchanged and later override them, if needed.
   SmallVector<Value *, 16> Args(II->arg_begin(), II->arg_end());
Value *InstCombiner::simplifyAMDGCNMemoryIntrinsicDemanded(IntrinsicInst *II,
 
   // Validate function argument and return types, extracting overloaded types
   // along the way.
   FunctionType *FTy = II->getCalledFunction()->getFunctionType();
   SmallVector<Type *, 6> OverloadTys;
   Intrinsic::matchIntrinsicSignature(FTy, TableRef, OverloadTys);
 
   Module *M = II->getParent()->getParent()->getParent();
-  Type *EltTy = II->getType()->getVectorElementType();
+  Type *EltTy = IIVTy->getElementType();
   Type *NewTy = (NewNumElts == 1) ? EltTy : VectorType::get(EltTy, NewNumElts);
 
   OverloadTys[0] = NewTy;
   Function *NewIntrin = Intrinsic::getDeclaration(M, IID, OverloadTys);
 
   CallInst *NewCall = Builder.CreateCall(NewIntrin, Args);
   NewCall->takeName(II);
   NewCall->copyMetadata(*II);

 ///
 /// If the information about demanded elements can be used to simplify the
 /// operation, the operation is simplified, then the resultant value is
 /// returned.  This returns null if no change was made.
 Value *InstCombiner::SimplifyDemandedVectorElts(Value *V, APInt DemandedElts,
                                                 APInt &UndefElts,
                                                 unsigned Depth,
                                                 bool AllowMultipleUsers) {
-  unsigned VWidth = V->getType()->getVectorNumElements();
+  unsigned VWidth = cast<VectorType>(V->getType())->getNumElements();
   APInt EltMask(APInt::getAllOnesValue(VWidth));
   assert((DemandedElts & ~EltMask) == 0 && "Invalid DemandedElts!");
 
   if (isa<UndefValue>(V)) {
     // If the entire vector is undefined, just return this info.
     UndefElts = EltMask;
     return nullptr;
   }
case Instruction::InsertElement: {
     break;
   }
   case Instruction::ShuffleVector: {
     auto *Shuffle = cast<ShuffleVectorInst>(I);
     assert(Shuffle->getOperand(0)->getType() ==
            Shuffle->getOperand(1)->getType() &&
            "Expected shuffle operands to have same type");
     unsigned OpWidth =
-        Shuffle->getOperand(0)->getType()->getVectorNumElements();
+        cast<VectorType>(Shuffle->getOperand(0)->getType())->getNumElements();
     // Handle trivial case of a splat. Only check the first element of LHS
     // operand.
     if (all_of(Shuffle->getShuffleMask(), [](int Elt) { return Elt == 0; }) &&
         DemandedElts.isAllOnesValue()) {
       if (!isa<UndefValue>(I->getOperand(1))) {
         I->setOperand(1, UndefValue::get(I->getOperand(1)->getType()));
         MadeChange = true;
       }
case Instruction::Call: {
     case Intrinsic::x86_avx2_packsswb:
     case Intrinsic::x86_avx2_packusdw:
     case Intrinsic::x86_avx2_packuswb:
     case Intrinsic::x86_avx512_packssdw_512:
     case Intrinsic::x86_avx512_packsswb_512:
     case Intrinsic::x86_avx512_packusdw_512:
     case Intrinsic::x86_avx512_packuswb_512: {
       auto *Ty0 = II->getArgOperand(0)->getType();
-      unsigned InnerVWidth = Ty0->getVectorNumElements();
+      unsigned InnerVWidth = cast<VectorType>(Ty0)->getNumElements();
       assert(VWidth == (InnerVWidth * 2) && "Unexpected input size");
 
       unsigned NumLanes = Ty0->getPrimitiveSizeInBits() / 128;
       unsigned VWidthPerLane = VWidth / NumLanes;
       unsigned InnerVWidthPerLane = InnerVWidth / NumLanes;
 
       // Per lane, pack the elements of the first input and then the second.
       // e.g.

llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp

static Instruction *foldBitcastExtElt(ExtractElementInst &Ext,
   if (!match(Ext.getVectorOperand(), m_BitCast(m_Value(X))) ||
       !X->getType()->isVectorTy() ||
       !match(Ext.getIndexOperand(), m_ConstantInt(ExtIndexC)))
     return nullptr;
 
   // If this extractelement is using a bitcast from a vector of the same number
   // of elements, see if we can find the source element from the source vector:
   // extelt (bitcast VecX), IndexC --> bitcast X[IndexC]
-  Type *SrcTy = X->getType();
+  auto *SrcTy = cast<VectorType>(X->getType());
   Type *DestTy = Ext.getType();
-  unsigned NumSrcElts = SrcTy->getVectorNumElements();
+  unsigned NumSrcElts = SrcTy->getNumElements();
   unsigned NumElts = Ext.getVectorOperandType()->getNumElements();
   if (NumSrcElts == NumElts)
     if (Value *Elt = findScalarElement(X, ExtIndexC))
       return new BitCastInst(Elt, DestTy);
 
   // If the source elements are wider than the destination, try to shift and
   // truncate a subset of scalar bits of an insert op.
   if (NumSrcElts < NumElts) {
if (NumSrcElts < NumElts) {
     return new TruncInst(Scalar, DestTy);
   }
 
   return nullptr;
 }
 
 /// Find elements of V demanded by UserInstr.
 static APInt findDemandedEltsBySingleUser(Value *V, Instruction *UserInstr) {
-  unsigned VWidth = V->getType()->getVectorNumElements();
+  unsigned VWidth = cast<VectorType>(V->getType())->getNumElements();
 
   // Conservatively assume that all elements are needed.
   APInt UsedElts(APInt::getAllOnesValue(VWidth));
 
   switch (UserInstr->getOpcode()) {
   case Instruction::ExtractElement: {
     ExtractElementInst *EEI = cast<ExtractElementInst>(UserInstr);
     assert(EEI->getVectorOperand() == V);
     ConstantInt *EEIIndexC = dyn_cast<ConstantInt>(EEI->getIndexOperand());
     if (EEIIndexC && EEIIndexC->getValue().ult(VWidth)) {
       UsedElts = APInt::getOneBitSet(VWidth, EEIIndexC->getZExtValue());
     }
     break;
   }
   case Instruction::ShuffleVector: {
     ShuffleVectorInst *Shuffle = cast<ShuffleVectorInst>(UserInstr);
-    unsigned MaskNumElts = UserInstr->getType()->getVectorNumElements();
+    unsigned MaskNumElts =
+        cast<VectorType>(UserInstr->getType())->getNumElements();
 
     UsedElts = APInt(VWidth, 0);
     for (unsigned i = 0; i < MaskNumElts; i++) {
       unsigned MaskVal = Shuffle->getMaskValue(i);
       if (MaskVal == -1u || MaskVal >= 2 * VWidth)
         continue;
       if (Shuffle->getOperand(0) == V && (MaskVal < VWidth))
         UsedElts.setBit(MaskVal);
static APInt findDemandedEltsBySingleUser(Value *V, Instruction *UserInstr) {
   return UsedElts;
 }
 
 /// Find union of elements of V demanded by all its users.
 /// If it is known by querying findDemandedEltsBySingleUser that
 /// no user demands an element of V, then the corresponding bit
 /// remains unset in the returned value.
 static APInt findDemandedEltsByAllUsers(Value *V) {
-  unsigned VWidth = V->getType()->getVectorNumElements();
+  unsigned VWidth = cast<VectorType>(V->getType())->getNumElements();
 
   APInt UnionUsedElts(VWidth, 0);
   for (const Use &U : V->uses()) {
     if (Instruction *I = dyn_cast<Instruction>(U.getUser())) {
       UnionUsedElts |= findDemandedEltsBySingleUser(V, I);
     } else {
       UnionUsedElts = APInt::getAllOnesValue(VWidth);
       break;
if (auto *IE = dyn_cast<InsertElementInst>(I)) {
         return replaceOperand(EI, 0, IE->getOperand(0));
     } else if (auto *SVI = dyn_cast<ShuffleVectorInst>(I)) {
       // If this is extracting an element from a shufflevector, figure out where
       // it came from and extract from the appropriate input element instead.
       if (auto *Elt = dyn_cast<ConstantInt>(Index)) {
         int SrcIdx = SVI->getMaskValue(Elt->getZExtValue());
         Value *Src;
         unsigned LHSWidth =
-          SVI->getOperand(0)->getType()->getVectorNumElements();
+            cast<VectorType>(SVI->getOperand(0)->getType())->getNumElements();
 
         if (SrcIdx < 0)
           return replaceInstUsesWith(EI, UndefValue::get(EI.getType()));
         if (SrcIdx < (int)LHSWidth)
           Src = SVI->getOperand(0);
         else {
           SrcIdx -= LHSWidth;
           Src = SVI->getOperand(1);

 }
 
 /// If V is a shuffle of values that ONLY returns elements from either LHS or
 /// RHS, return the shuffle mask and true. Otherwise, return false.
 static bool collectSingleShuffleElements(Value *V, Value *LHS, Value *RHS,
                                          SmallVectorImpl<Constant*> &Mask) {
   assert(LHS->getType() == RHS->getType() &&
          "Invalid CollectSingleShuffleElements");
-  unsigned NumElts = V->getType()->getVectorNumElements();
+  unsigned NumElts = cast<VectorType>(V->getType())->getNumElements();
 
   if (isa<UndefValue>(V)) {
     Mask.assign(NumElts, UndefValue::get(Type::getInt32Ty(V->getContext())));
     return true;
   }
 
   if (V == LHS) {
     for (unsigned i = 0; i != NumElts; ++i)
if (isa<UndefValue>(ScalarOp)) {  // inserting undef into vector.
         // If so, update the mask to reflect the inserted undef.
         Mask[InsertedIdx] = UndefValue::get(Type::getInt32Ty(V->getContext()));
         return true;
       }
     } else if (ExtractElementInst *EI = dyn_cast<ExtractElementInst>(ScalarOp)){
       if (isa<ConstantInt>(EI->getOperand(1))) {
         unsigned ExtractedIdx =
         cast<ConstantInt>(EI->getOperand(1))->getZExtValue();
-        unsigned NumLHSElts = LHS->getType()->getVectorNumElements();
+        unsigned NumLHSElts =
+            cast<VectorType>(LHS->getType())->getNumElements();
 
         // This must be extracting from either LHS or RHS.
         if (EI->getOperand(0) == LHS || EI->getOperand(0) == RHS) {
           // We can handle this if the vector we are inserting into is
           // transitively ok.
           if (collectSingleShuffleElements(VecOp, LHS, RHS, Mask)) {
             // If so, update the mask to reflect the inserted value.
             if (EI->getOperand(0) == LHS) {

 /// If we have insertion into a vector that is wider than the vector that we
 /// are extracting from, try to widen the source vector to allow a single
 /// shufflevector to replace one or more insert/extract pairs.
 static void replaceExtractElements(InsertElementInst *InsElt,
                                    ExtractElementInst *ExtElt,
                                    InstCombiner &IC) {
   VectorType *InsVecType = InsElt->getType();
   VectorType *ExtVecType = ExtElt->getVectorOperandType();
-  unsigned NumInsElts = InsVecType->getVectorNumElements();
-  unsigned NumExtElts = ExtVecType->getVectorNumElements();
+  unsigned NumInsElts = InsVecType->getNumElements();
+  unsigned NumExtElts = ExtVecType->getNumElements();
 
   // The inserted-to vector must be wider than the extracted-from vector.
   if (InsVecType->getElementType() != ExtVecType->getElementType() ||
       NumExtElts >= NumInsElts)
     return;
 
   // Create a shuffle mask to widen the extended-from vector using undefined
   // values. The mask selects all of the values of the original vector followed

 /// often been chosen carefully to be efficiently implementable on the target.
 using ShuffleOps = std::pair<Value *, Value *>;
 
 static ShuffleOps collectShuffleElements(Value *V,
                                          SmallVectorImpl<Constant *> &Mask,
                                          Value *PermittedRHS,
                                          InstCombiner &IC) {
   assert(V->getType()->isVectorTy() && "Invalid shuffle!");
-  unsigned NumElts = V->getType()->getVectorNumElements();
+  unsigned NumElts = cast<VectorType>(V->getType())->getNumElements();
 
   if (isa<UndefValue>(V)) {
     Mask.assign(NumElts, UndefValue::get(Type::getInt32Ty(V->getContext())));
     return std::make_pair(
         PermittedRHS ? UndefValue::get(PermittedRHS->getType()) : V, nullptr);
   }
 
   if (isa<ConstantAggregateZero>(V)) {
if (ExtractElementInst *EI = dyn_cast<ExtractElementInst>(ScalarOp)) {
 
             // We tried our best, but we can't find anything compatible with RHS
             // further up the chain. Return a trivial shuffle.
             for (unsigned i = 0; i < NumElts; ++i)
               Mask[i] = ConstantInt::get(Type::getInt32Ty(V->getContext()), i);
             return std::make_pair(V, nullptr);
           }
 
-          unsigned NumLHSElts = RHS->getType()->getVectorNumElements();
+          unsigned NumLHSElts =
+              cast<VectorType>(RHS->getType())->getNumElements();
           Mask[InsertedIdx % NumElts] =
             ConstantInt::get(Type::getInt32Ty(V->getContext()),
                              NumLHSElts+ExtractedIdx);
           return std::make_pair(LR.first, RHS);
         }
 
         if (VecOp == PermittedRHS) {
           // We've gone as far as we can: anything on the other side of the
           // extractelement will already have been converted into a shuffle.
           unsigned NumLHSElts =
-              EI->getOperand(0)->getType()->getVectorNumElements();
+              cast<VectorType>(EI->getOperand(0)->getType())->getNumElements();
           for (unsigned i = 0; i != NumElts; ++i)
             Mask.push_back(ConstantInt::get(
                 Type::getInt32Ty(V->getContext()),
                 i == InsertedIdx ? ExtractedIdx : NumLHSElts + i));
           return std::make_pair(EI->getOperand(0), PermittedRHS);
         }
 
         // If this insertelement is a chain that comes from exactly these two
Instruction *InstCombiner::visitInsertValueInst(InsertValueInst &I) {
 
   if (IsRedundant)
     return replaceInstUsesWith(I, I.getOperand(0));
   return nullptr;
 }
 
 static bool isShuffleEquivalentToSelect(ShuffleVectorInst &Shuf) {
   int MaskSize = Shuf.getShuffleMask().size();
-  int VecSize = Shuf.getOperand(0)->getType()->getVectorNumElements();
+  int VecSize =
+      cast<VectorType>(Shuf.getOperand(0)->getType())->getNumElements();
 
   // A vector select does not change the size of the operands.
   if (MaskSize != VecSize)
     return false;
 
   // Each mask element must be undefined or choose a vector element from one of
   // the source operands without crossing vector lanes.
   for (int i = 0; i != MaskSize; ++i) {
static Instruction *foldInsEltIntoSplat(InsertElementInst &InsElt) {
   Value *Op0 = Shuf->getOperand(0);
   if (!match(Op0, m_InsertElement(m_Undef(), m_Specific(X), m_ZeroInt())))
     return nullptr;
 
   // Replace the shuffle mask element at the index of this insert with a zero.
   // For example:
   // inselt (shuf (inselt undef, X, 0), undef, <0,undef,0,undef>), X, 1
   //   --> shuf (inselt undef, X, 0), undef, <0,0,0,undef>
-  unsigned NumMaskElts = Shuf->getType()->getVectorNumElements();
+  unsigned NumMaskElts = Shuf->getType()->getNumElements();
   SmallVector<int, 16> NewMask(NumMaskElts);
   for (unsigned i = 0; i != NumMaskElts; ++i)
     NewMask[i] = i == IdxC ? 0 : Shuf->getMaskValue(i);
 
   return new ShuffleVectorInst(Op0, UndefValue::get(Op0->getType()), NewMask);
 }
 
 /// Try to fold an extract+insert element into an existing identity shuffle by
static Instruction *foldInsEltIntoIdentityShuffle(InsertElementInst &InsElt) {
   Value *X = Shuf->getOperand(0);
   if (!match(Scalar, m_ExtractElement(m_Specific(X), m_SpecificInt(IdxC))))
     return nullptr;
 
   // Replace the shuffle mask element at the index of this extract+insert with
   // that same index value.
   // For example:
   // inselt (shuf X, IdMask), (extelt X, IdxC), IdxC --> shuf X, IdMask'
-  unsigned NumMaskElts = Shuf->getType()->getVectorNumElements();
+  unsigned NumMaskElts = Shuf->getType()->getNumElements();
   SmallVector<int, 16> NewMask(NumMaskElts);
   ArrayRef<int> OldMask = Shuf->getShuffleMask();
   for (unsigned i = 0; i != NumMaskElts; ++i) {
     if (i != IdxC) {
       // All mask elements besides the inserted element remain the same.
       NewMask[i] = OldMask[i];
     } else if (OldMask[i] == (int)IdxC) {
       // If the mask element was already set, there's nothing to do
Instruction *InstCombiner::visitInsertElementInst(InsertElementInst &IE) {
 
   // If the vector and scalar are both bitcast from the same element type, do
   // the insert in that source type followed by bitcast.
   Value *VecSrc, *ScalarSrc;
   if (match(VecOp, m_BitCast(m_Value(VecSrc))) &&
       match(ScalarOp, m_BitCast(m_Value(ScalarSrc))) &&
       (VecOp->hasOneUse() || ScalarOp->hasOneUse()) &&
       VecSrc->getType()->isVectorTy() && !ScalarSrc->getType()->isVectorTy() &&
-      VecSrc->getType()->getVectorElementType() == ScalarSrc->getType()) {
+      cast<VectorType>(VecSrc->getType())->getElementType() ==
+          ScalarSrc->getType()) {
     // inselt (bitcast VecSrc), (bitcast ScalarSrc), IdxOp -->
     //   bitcast (inselt VecSrc, ScalarSrc, IdxOp)
     Value *NewInsElt = Builder.CreateInsertElement(VecSrc, ScalarSrc, IdxOp);
     return new BitCastInst(NewInsElt, IE.getType());
   }
 
   // If the inserted element was extracted from some other vector and both
   // indexes are valid constants, try to turn this into a shuffle.
   uint64_t InsertedIdx, ExtractedIdx;
   Value *ExtVecOp;
   if (match(IdxOp, m_ConstantInt(InsertedIdx)) &&
-      match(ScalarOp, m_ExtractElement(m_Value(ExtVecOp),
-                                       m_ConstantInt(ExtractedIdx))) &&
-      ExtractedIdx < ExtVecOp->getType()->getVectorNumElements()) {
+      match(ScalarOp,
+            m_ExtractElement(m_Value(ExtVecOp), m_ConstantInt(ExtractedIdx))) &&
+      ExtractedIdx < cast<VectorType>(ExtVecOp->getType())->getNumElements()) {
     // TODO: Looking at the user(s) to determine if this insert is a
     // fold-to-shuffle opportunity does not match the usual instcombine
     // constraints. We should decide if the transform is worthy based only
     // on this instruction and its operands, but that may not work currently.
     //
     // Here, we are trying to avoid creating shuffles before reaching
     // the end of a chain of extract-insert pairs. This is complicated because
     // we do not generally form arbitrary shuffle masks in instcombine
if (isShuffleRootCandidate(IE)) {
         if (LR.second == nullptr)
           LR.second = UndefValue::get(LR.first->getType());
         return new ShuffleVectorInst(LR.first, LR.second,
                                      ConstantVector::get(Mask));
       }
     }
   }
 
-  unsigned VWidth = VecOp->getType()->getVectorNumElements();
+  unsigned VWidth = cast<VectorType>(VecOp->getType())->getNumElements();
   APInt UndefElts(VWidth, 0);
   APInt AllOnesEltMask(APInt::getAllOnesValue(VWidth));
   if (Value *V = SimplifyDemandedVectorElts(&IE, AllOnesEltMask, UndefElts)) {
     if (V != &IE)
       return replaceInstUsesWith(IE, V);
     return &IE;
   }
 
switch (I->getOpcode()) {
     case Instruction::UIToFP:
     case Instruction::SIToFP:
     case Instruction::FPTrunc:
     case Instruction::FPExt:
     case Instruction::GetElementPtr: {
       // Bail out if we would create longer vector ops. We could allow creating
       // longer vector ops, but that may result in more expensive codegen.
       Type *ITy = I->getType();
-      if (ITy->isVectorTy() && Mask.size() > ITy->getVectorNumElements())
+      if (ITy->isVectorTy() &&
+          Mask.size() > cast<VectorType>(ITy)->getNumElements())
         return false;
       for (Value *Operand : I->operands()) {
         if (!canEvaluateShuffled(Operand, Mask, Depth - 1))
           return false;
       }
       return true;
     }
     case Instruction::InsertElement: {
switch (I->getOpcode()) {
     case Instruction::FPToUI:
     case Instruction::FPToSI:
     case Instruction::UIToFP:
     case Instruction::SIToFP:
     case Instruction::FPTrunc:
     case Instruction::FPExt: {
       // It's possible that the mask has a different number of elements from
       // the original cast. We recompute the destination type to match the mask.
-      Type *DestTy =
-          VectorType::get(I->getType()->getScalarType(),
-                          NewOps[0]->getType()->getVectorNumElements());
+      Type *DestTy = VectorType::get(
+          I->getType()->getScalarType(),
+          cast<VectorType>(NewOps[0]->getType())->getElementCount());
       assert(NewOps.size() == 1 && "cast with #ops != 1");
       return CastInst::Create(cast<CastInst>(I)->getOpcode(), NewOps[0], DestTy,
                               "", I);
     }
     case Instruction::GetElementPtr: {
       Value *Ptr = NewOps[0];
       ArrayRef<Value*> Idx = NewOps.slice(1);
       GetElementPtrInst *GEP = GetElementPtrInst::Create(
switch (I->getOpcode()) {
     case Instruction::FPToSI:
     case Instruction::UIToFP:
     case Instruction::SIToFP:
     case Instruction::FPTrunc:
     case Instruction::FPExt:
     case Instruction::Select:
     case Instruction::GetElementPtr: {
       SmallVector<Value*, 8> NewOps;
-      bool NeedsRebuild = (Mask.size() != I->getType()->getVectorNumElements());
+      bool NeedsRebuild =
+          (Mask.size() != cast<VectorType>(I->getType())->getNumElements());
       for (int i = 0, e = I->getNumOperands(); i != e; ++i) {
         Value *V;
         // Recursively call evaluateInDifferentElementOrder on vector arguments
         // as well. E.g. GetElementPtr may have scalar operands even if the
         // return value is a vector, so we need to examine the operand type.
         if (I->getOperand(i)->getType()->isVectorTy())
           V = evaluateInDifferentElementOrder(I->getOperand(i), Mask);
         else

 // Returns true if the shuffle is extracting a contiguous range of values from
 // LHS, for example:
 //                 +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
 //   Input:        |AA|BB|CC|DD|EE|FF|GG|HH|II|JJ|KK|LL|MM|NN|OO|PP|
 //   Shuffles to:  |EE|FF|GG|HH|
 //                 +--+--+--+--+
 static bool isShuffleExtractingFromLHS(ShuffleVectorInst &SVI,
                                        ArrayRef<int> Mask) {
-  unsigned LHSElems = SVI.getOperand(0)->getType()->getVectorNumElements();
+  unsigned LHSElems =
+      cast<VectorType>(SVI.getOperand(0)->getType())->getNumElements();
   unsigned MaskElems = Mask.size();
   unsigned BegIdx = Mask.front();
   unsigned EndIdx = Mask.back();
   if (BegIdx > EndIdx || EndIdx >= LHSElems || EndIdx - BegIdx != MaskElems - 1)
     return false;
   for (unsigned I = 0; I != MaskElems; ++I)
     if (static_cast<unsigned>(Mask[I]) != BegIdx + I)
       return false;
static Instruction *canonicalizeInsertSplat(ShuffleVectorInst &Shuf,
   UndefValue *UndefVec = UndefValue::get(Shuf.getType());
   Constant *Zero = Builder.getInt32(0);
   Value *NewIns = Builder.CreateInsertElement(UndefVec, X, Zero);
 
   // Splat from element 0. Any mask element that is undefined remains undefined.
   // For example:
   // shuf (inselt undef, X, 2), undef, <2,2,undef>
   //   --> shuf (inselt undef, X, 0), undef, <0,0,undef>
-  unsigned NumMaskElts = Shuf.getType()->getVectorNumElements();
+  unsigned NumMaskElts = Shuf.getType()->getNumElements();
   SmallVector<int, 16> NewMask(NumMaskElts, 0);
   for (unsigned i = 0; i != NumMaskElts; ++i)
     if (Mask[i] == UndefMaskElem)
       NewMask[i] = Mask[i];
 
   return new ShuffleVectorInst(NewIns, UndefVec, NewMask);
 }
 
 /// Try to fold shuffles that are the equivalent of a vector select.
 static Instruction *foldSelectShuffle(ShuffleVectorInst &Shuf,
                                       InstCombiner::BuilderTy &Builder,
                                       const DataLayout &DL) {
   if (!Shuf.isSelect())
     return nullptr;
 
   // Canonicalize to choose from operand 0 first unless operand 1 is undefined.
   // Commuting undef to operand 0 conflicts with another canonicalization.
-  unsigned NumElts = Shuf.getType()->getVectorNumElements();
+  unsigned NumElts = Shuf.getType()->getNumElements();
   if (!isa<UndefValue>(Shuf.getOperand(1)) &&
       Shuf.getMaskValue(0) >= (int)NumElts) {
     // TODO: Can we assert that both operands of a shuffle-select are not undef
     // (otherwise, it would have been folded by instsimplify?
     Shuf.commute();
     return &Shuf;
   }
 
static Instruction *foldTruncShuffle(ShuffleVectorInst &Shuf,
   if (!match(Shuf.getOperand(0), m_BitCast(m_Value(X))) ||
       !match(Shuf.getOperand(1), m_Undef()) || !DestType->isIntOrIntVectorTy())
     return nullptr;
 
   // The source type must have the same number of elements as the shuffle,
   // and the source element type must be larger than the shuffle element type.
   Type *SrcType = X->getType();
   if (!SrcType->isVectorTy() || !SrcType->isIntOrIntVectorTy() ||
-      SrcType->getVectorNumElements() != DestType->getVectorNumElements() ||
+      cast<VectorType>(SrcType)->getNumElements() !=
+          cast<VectorType>(DestType)->getNumElements() ||
       SrcType->getScalarSizeInBits() % DestType->getScalarSizeInBits() != 0)
     return nullptr;
 
   assert(Shuf.changesLength() && !Shuf.increasesLength() &&
          "Expected a shuffle that decreases length");
 
   // Last, check that the mask chooses the correct low bits for each narrow
   // element in the result.
static Instruction *narrowVectorSelect(ShuffleVectorInst &Shuf,
   // TODO: The one-use requirement could be eased if X and/or Y are constants.
   Value *Cond, *X, *Y;
   if (!match(Shuf.getOperand(0),
              m_OneUse(m_Select(m_Value(Cond), m_Value(X), m_Value(Y)))))
     return nullptr;
 
   // We need a narrow condition value. It must be extended with undef elements
   // and have the same number of elements as this shuffle.
-  unsigned NarrowNumElts = Shuf.getType()->getVectorNumElements();
+  unsigned NarrowNumElts = Shuf.getType()->getNumElements();
   Value *NarrowCond;
   if (!match(Cond, m_OneUse(m_ShuffleVector(m_Value(NarrowCond), m_Undef()))) ||
-      NarrowCond->getType()->getVectorNumElements() != NarrowNumElts ||
+      cast<VectorType>(NarrowCond->getType())->getNumElements() !=
+          NarrowNumElts ||
       !cast<ShuffleVectorInst>(Cond)->isIdentityWithPadding())
     return nullptr;
 
   // shuf (sel (shuf NarrowCond, undef, WideMask), X, Y), undef, NarrowMask) -->
   // sel NarrowCond, (shuf X, undef, NarrowMask), (shuf Y, undef, NarrowMask)
   Value *Undef = UndefValue::get(X->getType());
   Value *NarrowX = Builder.CreateShuffleVector(X, Undef, Shuf.getShuffleMask());
   Value *NarrowY = Builder.CreateShuffleVector(Y, Undef, Shuf.getShuffleMask());
static Instruction *foldIdentityExtractShuffle(ShuffleVectorInst &Shuf) {
   // This transform is conservatively limited to identity extracts because we do
   // not allow arbitrary shuffle mask creation as a target-independent transform
   // (because we can't guarantee that will lower efficiently).
   //
   // If the extracting shuffle has an undef mask element, it transfers to the
   // new shuffle mask. Otherwise, copy the original mask element. Example:
   //   shuf (shuf X, Y, <C0, C1, C2, undef, C4>), undef, <0, undef, 2, 3> -->
   //   shuf X, Y, <C0, undef, C2, undef>
-  unsigned NumElts = Shuf.getType()->getVectorNumElements();
+  unsigned NumElts = Shuf.getType()->getNumElements();
   SmallVector<int, 16> NewMask(NumElts);
   assert(NumElts < Mask.size() &&
          "Identity with extract must have less elements than its inputs");
 
   for (unsigned i = 0; i != NumElts; ++i) {
     int ExtractMaskElt = Shuf.getMaskValue(i);
     int MaskElt = Mask[i];
     NewMask[i] = ExtractMaskElt == UndefMaskElem ? ExtractMaskElt : MaskElt;
   }
   return new ShuffleVectorInst(X, Y, NewMask);
 }
 
 /// Try to replace a shuffle with an insertelement or try to replace a shuffle
 /// operand with the operand of an insertelement.
 static Instruction *foldShuffleWithInsert(ShuffleVectorInst &Shuf,
                                           InstCombiner &IC) {
   Value *V0 = Shuf.getOperand(0), *V1 = Shuf.getOperand(1);
   SmallVector<int, 16> Mask;
   Shuf.getShuffleMask(Mask);
 
   // The shuffle must not change vector sizes.
   // TODO: This restriction could be removed if the insert has only one use
   //       (because the transform would require a new length-changing shuffle).
   int NumElts = Mask.size();
-  if (NumElts != (int)(V0->getType()->getVectorNumElements()))
+  if (NumElts != (int)(cast<VectorType>(V0->getType())->getNumElements()))
     return nullptr;
 
   // This is a specialization of a fold in SimplifyDemandedVectorElts. We may
   // not be able to handle it there if the insertelement has >1 use.
   // If the shuffle has an insertelement operand but does not choose the
   // inserted scalar element from that value, then we can replace that shuffle
   // operand with the source vector of the insertelement.
   Value *X;
static Instruction *foldIdentityPaddedShuffles(ShuffleVectorInst &Shuf) {
   // We limit this transform to power-of-2 types because we expect that the
   // backend can convert the simplified IR patterns to identical nodes as the
   // original IR.
   // TODO: If we can verify the same behavior for arbitrary types, the
   //       power-of-2 checks can be removed.
   Value *X = Shuffle0->getOperand(0);
   Value *Y = Shuffle1->getOperand(0);
   if (X->getType() != Y->getType() ||
-      !isPowerOf2_32(Shuf.getType()->getVectorNumElements()) ||
-      !isPowerOf2_32(Shuffle0->getType()->getVectorNumElements()) ||
-      !isPowerOf2_32(X->getType()->getVectorNumElements()) ||
+      !isPowerOf2_32(Shuf.getType()->getNumElements()) ||
+      !isPowerOf2_32(Shuffle0->getType()->getNumElements()) ||
+      !isPowerOf2_32(cast<VectorType>(X->getType())->getNumElements()) ||
       isa<UndefValue>(X) || isa<UndefValue>(Y))
     return nullptr;
   assert(isa<UndefValue>(Shuffle0->getOperand(1)) &&
          isa<UndefValue>(Shuffle1->getOperand(1)) &&
          "Unexpected operand for identity shuffle");
 
   // This is a shuffle of 2 widening shuffles. We can shuffle the narrow source
   // operands directly by adjusting the shuffle mask to account for the narrower
   // types:
   // shuf (widen X), (widen Y), Mask --> shuf X, Y, Mask'
-  int NarrowElts = X->getType()->getVectorNumElements();
-  int WideElts = Shuffle0->getType()->getVectorNumElements();
+  int NarrowElts = cast<VectorType>(X->getType())->getNumElements();
+  int WideElts = Shuffle0->getType()->getNumElements();
   assert(WideElts > NarrowElts && "Unexpected types for identity with padding");
 
   Type *I32Ty = IntegerType::getInt32Ty(Shuf.getContext());
   ArrayRef<int> Mask = Shuf.getShuffleMask();
   SmallVector<Constant *, 16> NewMask(Mask.size(), UndefValue::get(I32Ty));
   for (int i = 0, e = Mask.size(); i != e; ++i) {
     if (Mask[i] == -1)
       continue;
Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
   Value *LHS = SVI.getOperand(0);
   Value *RHS = SVI.getOperand(1);
   SimplifyQuery ShufQuery = SQ.getWithInstruction(&SVI);
   if (auto *V = SimplifyShuffleVectorInst(LHS, RHS, SVI.getShuffleMask(),
                                           SVI.getType(), ShufQuery))
     return replaceInstUsesWith(SVI, V);
 
   // shuffle x, x, mask --> shuffle x, undef, mask'
-  unsigned VWidth = SVI.getType()->getVectorNumElements();
-  unsigned LHSWidth = LHS->getType()->getVectorNumElements();
+  unsigned VWidth = SVI.getType()->getNumElements();
+  unsigned LHSWidth = cast<VectorType>(LHS->getType())->getNumElements();
   ArrayRef<int> Mask = SVI.getShuffleMask();
   Type *Int32Ty = Type::getInt32Ty(SVI.getContext());
 
   // Peek through a bitcasted shuffle operand by scaling the mask. If the
   // simulated shuffle can simplify, then this shuffle is unnecessary:
   // shuf (bitcast X), undef, Mask --> bitcast X'
   // TODO: This could be extended to allow length-changing shuffles and/or casts
   //       to narrower elements. The transform might also be obsoleted if we
   //       allowed canonicalization of bitcasted shuffles.
   Value *X;
   if (match(LHS, m_BitCast(m_Value(X))) && match(RHS, m_Undef()) &&
       X->getType()->isVectorTy() && VWidth == LHSWidth &&
-      X->getType()->getVectorNumElements() >= VWidth) {
+      cast<VectorType>(X->getType())->getNumElements() >= VWidth) {
     // Create the scaled mask constant.
-    Type *XType = X->getType();
-    unsigned XNumElts = XType->getVectorNumElements();
+    auto *XType = cast<VectorType>(X->getType());
+    unsigned XNumElts = XType->getNumElements();
     assert(XNumElts % VWidth == 0 && "Unexpected vector bitcast");
     unsigned ScaleFactor = XNumElts / VWidth;
     SmallVector<int, 16> ScaledMask;
     scaleShuffleMask(ScaleFactor, Mask, ScaledMask);
 
     // If the shuffled source vector simplifies, cast that value to this
     // shuffle's type.
     if (auto *V = SimplifyShuffleVectorInst(X, UndefValue::get(XType),
Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
   Value* LHSOp0 = nullptr;
   Value* LHSOp1 = nullptr;
   Value* RHSOp0 = nullptr;
   unsigned LHSOp0Width = 0;
   unsigned RHSOp0Width = 0;
   if (LHSShuffle) {
     LHSOp0 = LHSShuffle->getOperand(0);
     LHSOp1 = LHSShuffle->getOperand(1);
-    LHSOp0Width = LHSOp0->getType()->getVectorNumElements();
+    LHSOp0Width = cast<VectorType>(LHSOp0->getType())->getNumElements();
   }
   if (RHSShuffle) {
     RHSOp0 = RHSShuffle->getOperand(0);
-    RHSOp0Width = RHSOp0->getType()->getVectorNumElements();
+    RHSOp0Width = cast<VectorType>(RHSOp0->getType())->getNumElements();
   }
   Value* newLHS = LHS;
   Value* newRHS = RHS;
   if (LHSShuffle) {
     // case 1
     if (isa<UndefValue>(RHS)) {
       newLHS = LHSOp0;
       newRHS = LHSOp1;

llvm/lib/Transforms/InstCombine/InstructionCombining.cpp

Instruction *InstCombiner::foldVectorBinop(BinaryOperator &Inst) {
   // try moving the shuffle after the binary operation. This canonicalization
   // intends to move shuffles closer to other shuffles and binops closer to
   // other binops, so they can be folded. It may also enable demanded elements
   // transforms.
   Constant *C;
   if (match(&Inst, m_c_BinOp(m_OneUse(m_ShuffleVector(m_Value(V1), m_Undef(),
                                                       m_Mask(Mask))),
                              m_Constant(C))) &&
-      V1->getType()->getVectorNumElements() <= NumElts) {
+      cast<VectorType>(V1->getType())->getNumElements() <= NumElts) {
     assert(Inst.getType()->getScalarType() == V1->getType()->getScalarType() &&
            "Shuffle should not change scalar type");
 
     // Find constant NewC that has property:
     //   shuffle(NewC, ShMask) = C
     // If such constant does not exist (example: ShMask=<0,0> and C=<1,2>)
     // reorder is not possible. A 1-to-1 mapping is not required. Example:
     // ShMask = <1,1,2,2> and C = <5,5,6,6> --> NewC = <undef,5,6,undef>
     bool ConstOp1 = isa<Constant>(RHS);
     ArrayRef<int> ShMask = Mask;
-    unsigned SrcVecNumElts = V1->getType()->getVectorNumElements();
+    unsigned SrcVecNumElts = cast<VectorType>(V1->getType())->getNumElements();
     UndefValue *UndefScalar = UndefValue::get(C->getType()->getScalarType());
     SmallVector<Constant *, 16> NewVecC(SrcVecNumElts, UndefScalar);
     bool MayChange = true;
     for (unsigned I = 0; I < NumElts; ++I) {
       Constant *CElt = C->getAggregateElement(I);
       if (ShMask[I] >= 0) {
         assert(ShMask[I] < (int)NumElts && "Not expecting narrowing shuffle");
         Constant *NewCElt = NewVecC[ShMask[I]];

 Instruction *InstCombiner::visitGetElementPtrInst(GetElementPtrInst &GEP) {
   SmallVector<Value*, 8> Ops(GEP.op_begin(), GEP.op_end());
   Type *GEPType = GEP.getType();
   Type *GEPEltType = GEP.getSourceElementType();
   if (Value *V = SimplifyGEPInst(GEPEltType, Ops, SQ.getWithInstruction(&GEP)))
     return replaceInstUsesWith(GEP, V);
 
   // For vector geps, use the generic demanded vector support.
-  if (GEP.getType()->isVectorTy()) {
-    auto VWidth = GEP.getType()->getVectorNumElements();
+  if (auto *GEPVTy = dyn_cast<VectorType>(GEP.getType())) {
+    auto VWidth = GEPVTy->getNumElements();
     APInt UndefElts(VWidth, 0);
     APInt AllOnesEltMask(APInt::getAllOnesValue(VWidth));
     if (Value *V = SimplifyDemandedVectorElts(&GEP, AllOnesEltMask,
                                               UndefElts)) {
       if (V != &GEP)
         return replaceInstUsesWith(GEP, V);
       return &GEP;
     }
 
     // TODO: 1) Scalarize splat operands, 2) scalarize entire instruction if
     // possible (decide on canonical form for pointer broadcast), 3) exploit
-    // undef elements to decrease demanded bits  
+    // undef elements to decrease demanded bits
   }
 
   Value *PtrOp = GEP.getOperand(0);
 
   // Eliminate unneeded casts for indices, and replace indices which displace
   // by multiples of a zero size type with zero.
   bool MadeChange = false;
 
   // Index width may not be the same width as pointer width.
   // Data layout chooses the right type based on supported integer types.
   Type *NewScalarIndexTy =
       DL.getIndexType(GEP.getPointerOperandType()->getScalarType());
 
   gep_type_iterator GTI = gep_type_begin(GEP);
   for (User::op_iterator I = GEP.op_begin() + 1, E = GEP.op_end(); I != E;
        ++I, ++GTI) {
     // Skip indices into struct types.
     if (GTI.isStruct())
       continue;
 
     Type *IndexTy = (*I)->getType();
     Type *NewIndexType =
         IndexTy->isVectorTy()
-            ? VectorType::get(NewScalarIndexTy, IndexTy->getVectorNumElements())
+            ? VectorType::get(NewScalarIndexTy,
+                              cast<VectorType>(IndexTy)->getNumElements())
             : NewScalarIndexTy;
 
     // If the element type has zero size then any index over it is equivalent
     // to an index of zero, so replace it with zero if it is not zero already.
     Type *EltTy = GTI.getIndexedType();
     if (EltTy->isSized() && DL.getTypeAllocSize(EltTy) == 0)
       if (!isa<Constant>(*I) || !match(I->get(), m_Zero())) {
         *I = Constant::getNullValue(NewIndexType);
if (auto *BCI = dyn_cast<BitCastInst>(ASCStrippedPtrOp)) {
     Type *SrcEltType = SrcType->getElementType();
 
     // GEP directly using the source operand if this GEP is accessing an element
     // of a bitcasted pointer to vector or array of the same dimensions:
     // gep (bitcast <c x ty>* X to [c x ty]*), Y, Z --> gep X, Y, Z
     // gep (bitcast [c x ty]* X to <c x ty>*), Y, Z --> gep X, Y, Z
     auto areMatchingArrayAndVecTypes = [](Type *ArrTy, Type *VecTy,
                                           const DataLayout &DL) {
-      return ArrTy->getArrayElementType() == VecTy->getVectorElementType() &&
-             ArrTy->getArrayNumElements() == VecTy->getVectorNumElements() &&
+      auto *VecVTy = cast<VectorType>(VecTy);
+      return ArrTy->getArrayElementType() == VecVTy->getElementType() &&
+             ArrTy->getArrayNumElements() == VecVTy->getNumElements() &&
              DL.getTypeAllocSize(ArrTy) == DL.getTypeAllocSize(VecTy);
     };
     if (GEP.getNumOperands() == 3 &&
         ((GEPEltType->isArrayTy() && SrcEltType->isVectorTy() &&
           areMatchingArrayAndVecTypes(GEPEltType, SrcEltType, DL)) ||
          (GEPEltType->isVectorTy() && SrcEltType->isArrayTy() &&
           areMatchingArrayAndVecTypes(SrcEltType, GEPEltType, DL)))) {