Index: include/llvm/IR/Operator.h =================================================================== --- include/llvm/IR/Operator.h +++ include/llvm/IR/Operator.h @@ -401,6 +401,7 @@ } Type *getSourceElementType() const; + Type *getResultElementType() const; /// Method to return the address space of the pointer operand. unsigned getPointerAddressSpace() const { Index: lib/Analysis/BasicAliasAnalysis.cpp =================================================================== --- lib/Analysis/BasicAliasAnalysis.cpp +++ lib/Analysis/BasicAliasAnalysis.cpp @@ -381,7 +381,7 @@ } // Don't attempt to analyze GEPs over unsized objects. - if (!GEPOp->getOperand(0)->getType()->getPointerElementType()->isSized()) + if (!GEPOp->getSourceElementType()->isSized()) return V; unsigned AS = GEPOp->getPointerAddressSpace(); Index: lib/Analysis/ScalarEvolution.cpp =================================================================== --- lib/Analysis/ScalarEvolution.cpp +++ lib/Analysis/ScalarEvolution.cpp @@ -4087,16 +4087,16 @@ /// operations. This allows them to be analyzed by regular SCEV code. /// const SCEV *ScalarEvolution::createNodeForGEP(GEPOperator *GEP) { - Value *Base = GEP->getOperand(0); // Don't attempt to analyze GEPs over unsized objects. - if (!Base->getType()->getPointerElementType()->isSized()) + if (!GEP->getSourceElementType()->isSized()) return getUnknown(GEP); SmallVector IndexExprs; for (auto Index = GEP->idx_begin(); Index != GEP->idx_end(); ++Index) IndexExprs.push_back(getSCEV(*Index)); - return getGEPExpr(GEP->getSourceElementType(), getSCEV(Base), IndexExprs, - GEP->isInBounds()); + return getGEPExpr(GEP->getSourceElementType(), + getSCEV(GEP->getPointerOperand()), + IndexExprs, GEP->isInBounds()); } /// GetMinTrailingZeros - Determine the minimum number of zero bits that S is Index: lib/Analysis/ValueTracking.cpp =================================================================== --- lib/Analysis/ValueTracking.cpp +++ lib/Analysis/ValueTracking.cpp @@ -2886,8 +2886,7 @@ return false; // Make sure the index-ee is a pointer to array of i8. - PointerType *PT = cast(GEP->getOperand(0)->getType()); - ArrayType *AT = dyn_cast(PT->getElementType()); + ArrayType *AT = dyn_cast(GEP->getSourceElementType()); if (!AT || !AT->getElementType()->isIntegerTy(8)) return false; @@ -3254,7 +3253,7 @@ // For GEPs, determine if the indexing lands within the allocated object. if (const GEPOperator *GEP = dyn_cast(V)) { Type *VTy = GEP->getType(); - Type *Ty = VTy->getPointerElementType(); + Type *Ty = GEP->getResultElementType(); const Value *Base = GEP->getPointerOperand(); // Conservatively require that the base pointer be fully dereferenceable @@ -3272,7 +3271,7 @@ // Check if the load is within the bounds of the underlying object // and offset is aligned. uint64_t LoadSize = DL.getTypeStoreSize(Ty); - Type *BaseType = Base->getType()->getPointerElementType(); + Type *BaseType = GEP->getSourceElementType(); assert(isPowerOf2_32(Align) && "must be a power of 2!"); return (Offset + LoadSize).ule(DL.getTypeAllocSize(BaseType)) && !(Offset & APInt(Offset.getBitWidth(), Align-1)); Index: lib/Analysis/VectorUtils.cpp =================================================================== --- lib/Analysis/VectorUtils.cpp +++ lib/Analysis/VectorUtils.cpp @@ -231,8 +231,7 @@ unsigned llvm::getGEPInductionOperand(const GetElementPtrInst *Gep) { const DataLayout &DL = Gep->getModule()->getDataLayout(); unsigned LastOperand = Gep->getNumOperands() - 1; - unsigned GEPAllocSize = DL.getTypeAllocSize( - cast(Gep->getType()->getScalarType())->getElementType()); + unsigned GEPAllocSize = DL.getTypeAllocSize(Gep->getResultElementType()); // Walk backwards and try to peel off zeros. while (LastOperand > 1 && match(Gep->getOperand(LastOperand), m_Zero())) { Index: lib/CodeGen/SelectionDAG/FastISel.cpp =================================================================== --- lib/CodeGen/SelectionDAG/FastISel.cpp +++ lib/CodeGen/SelectionDAG/FastISel.cpp @@ -513,7 +513,13 @@ } Ty = StTy->getElementType(Field); } else { - Ty = cast(Ty)->getElementType(); + if (Ty->isPointerTy()) { + // The only pointer type is for the very first index, + // thus the next type is the source element type. + Ty = cast(I)->getSourceElementType(); + } else { + Ty = cast(Ty)->getElementType(); + } // If this is a constant subscript, handle it quickly. if (const auto *CI = dyn_cast(Idx)) { Index: lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp =================================================================== --- lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -3018,7 +3018,14 @@ Ty = StTy->getElementType(Field); } else { - Ty = cast(Ty)->getElementType(); + if (Ty->isPointerTy()) { + // The only pointer type is for the very first index, + // thus the next type is the source element type. + Ty = cast(&I)->getSourceElementType(); + } else { + Ty = cast(Ty)->getElementType(); + } + MVT PtrTy = DAG.getTargetLoweringInfo().getPointerTy(DAG.getDataLayout(), AS); unsigned PtrSize = PtrTy.getSizeInBits(); Index: lib/IR/ConstantFold.h =================================================================== --- lib/IR/ConstantFold.h +++ lib/IR/ConstantFold.h @@ -47,10 +47,6 @@ Constant *V2); Constant *ConstantFoldCompareInstruction(unsigned short predicate, Constant *C1, Constant *C2); - Constant *ConstantFoldGetElementPtr(Constant *C, bool inBounds, - ArrayRef Idxs); - Constant *ConstantFoldGetElementPtr(Constant *C, bool inBounds, - ArrayRef Idxs); Constant *ConstantFoldGetElementPtr(Type *Ty, Constant *C, bool inBounds, ArrayRef Idxs); Constant *ConstantFoldGetElementPtr(Type *Ty, Constant *C, bool inBounds, Index: lib/IR/ConstantFold.cpp =================================================================== --- lib/IR/ConstantFold.cpp +++ lib/IR/ConstantFold.cpp @@ -2041,7 +2041,7 @@ if (isa(C)) { PointerType *PtrTy = cast(C->getType()->getScalarType()); - Type *Ty = GetElementPtrInst::getIndexedType(PtrTy->getElementType(), Idxs); + Type *Ty = GetElementPtrInst::getIndexedType(PointeeTy, Idxs); assert(Ty && "Invalid indices for GEP!"); Type *GEPTy = PointerType::get(Ty, PtrTy->getAddressSpace()); if (VectorType *VT = dyn_cast(C->getType())) @@ -2058,8 +2058,8 @@ } if (isNull) { PointerType *PtrTy = cast(C->getType()->getScalarType()); - Type *Ty = - GetElementPtrInst::getIndexedType(PtrTy->getElementType(), Idxs); + Type *Ty = GetElementPtrInst::getIndexedType(PointeeTy, Idxs); + assert(Ty && "Invalid indices for GEP!"); Type *GEPTy = PointerType::get(Ty, PtrTy->getAddressSpace()); if (VectorType *VT = dyn_cast(C->getType())) @@ -2241,22 +2241,6 @@ return nullptr; } -Constant *llvm::ConstantFoldGetElementPtr(Constant *C, - bool inBounds, - ArrayRef Idxs) { - return ConstantFoldGetElementPtrImpl( - cast(C->getType()->getScalarType())->getElementType(), C, - inBounds, Idxs); -} - -Constant *llvm::ConstantFoldGetElementPtr(Constant *C, - bool inBounds, - ArrayRef Idxs) { - return ConstantFoldGetElementPtrImpl( - cast(C->getType()->getScalarType())->getElementType(), C, - inBounds, Idxs); -} - Constant *llvm::ConstantFoldGetElementPtr(Type *Ty, Constant *C, bool inBounds, ArrayRef Idxs) { Index: lib/IR/Constants.cpp =================================================================== --- lib/IR/Constants.cpp +++ lib/IR/Constants.cpp @@ -2335,7 +2335,8 @@ OperandTraits::op_end(this) - (IdxList.size() + 1), IdxList.size() + 1), - SrcElementTy(SrcElementTy) { + SrcElementTy(SrcElementTy), + ResElementTy(GetElementPtrInst::getIndexedType(SrcElementTy, IdxList)) { Op<0>() = C; Use *OperandList = getOperandList(); for (unsigned i = 0, E = IdxList.size(); i != E; ++i) @@ -2346,6 +2347,10 @@ return SrcElementTy; } +Type *GetElementPtrConstantExpr::getResultElementType() const { + return ResElementTy; +} + //===----------------------------------------------------------------------===// // ConstantData* implementations Index: lib/IR/ConstantsContext.h =================================================================== --- lib/IR/ConstantsContext.h +++ lib/IR/ConstantsContext.h @@ -225,19 +225,12 @@ /// used behind the scenes to implement getelementpr constant exprs. class GetElementPtrConstantExpr : public ConstantExpr { Type *SrcElementTy; + Type *ResElementTy; void anchor() override; GetElementPtrConstantExpr(Type *SrcElementTy, Constant *C, ArrayRef IdxList, Type *DestTy); public: - static GetElementPtrConstantExpr *Create(Constant *C, - ArrayRef IdxList, - Type *DestTy, - unsigned Flags) { - return Create( - cast(C->getType()->getScalarType())->getElementType(), C, - IdxList, DestTy, Flags); - } static GetElementPtrConstantExpr *Create(Type *SrcElementTy, Constant *C, ArrayRef IdxList, Type *DestTy, unsigned Flags) { @@ -247,6 +240,7 @@ return Result; } Type *getSourceElementType() const; + Type *getResultElementType() const; /// Transparently provide more efficient getOperand methods. DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value); Index: lib/IR/Operator.cpp =================================================================== --- lib/IR/Operator.cpp +++ lib/IR/Operator.cpp @@ -12,6 +12,12 @@ return cast(this)->getSourceElementType(); } +Type *GEPOperator::getResultElementType() const { + if (auto *I = dyn_cast(this)) + return I->getResultElementType(); + return cast(this)->getResultElementType(); +} + bool GEPOperator::accumulateConstantOffset(const DataLayout &DL, APInt &Offset) const { assert(Offset.getBitWidth() == Index: lib/Target/AArch64/AArch64FastISel.cpp =================================================================== --- lib/Target/AArch64/AArch64FastISel.cpp +++ lib/Target/AArch64/AArch64FastISel.cpp @@ -4825,7 +4825,13 @@ TotalOffs += DL.getStructLayout(StTy)->getElementOffset(Field); Ty = StTy->getElementType(Field); } else { - Ty = cast(Ty)->getElementType(); + if (Ty->isPointerTy()) { + // The only pointer type is for the very first index, + // thus the next type is the source element type. + Ty = cast(I)->getSourceElementType(); + } else { + Ty = cast(Ty)->getElementType(); + } // If this is a constant subscript, handle it quickly. if (const auto *CI = dyn_cast(Idx)) { if (CI->isZero()) Index: lib/Transforms/IPO/GlobalOpt.cpp =================================================================== --- lib/Transforms/IPO/GlobalOpt.cpp +++ lib/Transforms/IPO/GlobalOpt.cpp @@ -329,7 +329,7 @@ // we already know what the result of any load from that GEP is. // TODO: Handle splats. if (Init && isa(Init) && GEP->isInBounds()) - SubInit = Constant::getNullValue(GEP->getType()->getElementType()); + SubInit = Constant::getNullValue(GEP->getResultElementType()); } Changed |= CleanupConstantGlobalUsers(GEP, SubInit, DL, TLI); Index: lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp =================================================================== --- lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp +++ lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp @@ -694,10 +694,8 @@ return false; SmallVector Ops(GEPI->idx_begin(), GEPI->idx_begin() + Idx); - Type *AllocTy = GetElementPtrInst::getIndexedType( - cast(GEPI->getOperand(0)->getType()->getScalarType()) - ->getElementType(), - Ops); + Type *AllocTy = + GetElementPtrInst::getIndexedType(GEPI->getSourceElementType(), Ops); if (!AllocTy || !AllocTy->isSized()) return false; const DataLayout &DL = IC.getDataLayout(); Index: lib/Transforms/InstCombine/InstructionCombining.cpp =================================================================== --- lib/Transforms/InstCombine/InstructionCombining.cpp +++ lib/Transforms/InstCombine/InstructionCombining.cpp @@ -1349,19 +1349,18 @@ for (User::op_iterator I = GEP.op_begin() + 1, E = GEP.op_end(); I != E; ++I, ++GTI) { // Skip indices into struct types. - SequentialType *SeqTy = dyn_cast(*GTI); - if (!SeqTy) + if (isa(*GTI)) continue; // Index type should have the same width as IntPtr Type *IndexTy = (*I)->getType(); Type *NewIndexType = IndexTy->isVectorTy() ? VectorType::get(IntPtrTy, IndexTy->getVectorNumElements()) : IntPtrTy; - + // 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. - if (SeqTy->getElementType()->isSized() && - DL.getTypeAllocSize(SeqTy->getElementType()) == 0) + Type *EltTy = GTI.getIndexedType(); + if (EltTy->isSized() && DL.getTypeAllocSize(EltTy) == 0) if (!isa(*I) || !cast(*I)->isNullValue()) { *I = Constant::getNullValue(NewIndexType); MadeChange = true; @@ -1405,7 +1404,7 @@ return nullptr; // Keep track of the type as we walk the GEP. - Type *CurTy = Op1->getOperand(0)->getType()->getScalarType(); + Type *CurTy = nullptr; for (unsigned J = 0, F = Op1->getNumOperands(); J != F; ++J) { if (Op1->getOperand(J)->getType() != Op2->getOperand(J)->getType()) @@ -1436,7 +1435,9 @@ // Sink down a layer of the type for the next iteration. if (J > 0) { - if (CompositeType *CT = dyn_cast(CurTy)) { + if (J == 1) { + CurTy = Op1->getSourceElementType(); + } else if (CompositeType *CT = dyn_cast(CurTy)) { CurTy = CT->getTypeAtIndex(Op1->getOperand(J)); } else { CurTy = nullptr; @@ -1565,8 +1566,7 @@ unsigned AS = GEP.getPointerAddressSpace(); if (GEP.getOperand(1)->getType()->getScalarSizeInBits() == DL.getPointerSizeInBits(AS)) { - Type *PtrTy = GEP.getPointerOperandType(); - Type *Ty = PtrTy->getPointerElementType(); + Type *Ty = GEP.getSourceElementType(); uint64_t TyAllocSize = DL.getTypeAllocSize(Ty); bool Matched = false; @@ -1629,9 +1629,8 @@ // // This occurs when the program declares an array extern like "int X[];" if (HasZeroPointerIndex) { - PointerType *CPTy = cast(PtrOp->getType()); if (ArrayType *CATy = - dyn_cast(CPTy->getElementType())) { + dyn_cast(GEP.getSourceElementType())) { // GEP (bitcast i8* X to [0 x i8]*), i32 0, ... ? if (CATy->getElementType() == StrippedPtrTy->getElementType()) { // -> GEP i8* X, ... @@ -1688,7 +1687,7 @@ // %t = getelementptr i32* bitcast ([2 x i32]* %str to i32*), i32 %V // into: %t1 = getelementptr [2 x i32]* %str, i32 0, i32 %V; bitcast Type *SrcElTy = StrippedPtrTy->getElementType(); - Type *ResElTy = PtrOp->getType()->getPointerElementType(); + Type *ResElTy = GEP.getSourceElementType(); if (SrcElTy->isArrayTy() && DL.getTypeAllocSize(SrcElTy->getArrayElementType()) == DL.getTypeAllocSize(ResElTy)) { Index: lib/Transforms/Scalar/NaryReassociate.cpp =================================================================== --- lib/Transforms/Scalar/NaryReassociate.cpp +++ lib/Transforms/Scalar/NaryReassociate.cpp @@ -335,7 +335,7 @@ } unsigned AddrSpace = GEP->getPointerAddressSpace(); - return TTI->isLegalAddressingMode(GEP->getType()->getElementType(), BaseGV, + return TTI->isLegalAddressingMode(GEP->getResultElementType(), BaseGV, BaseOffset, HasBaseReg, Scale, AddrSpace); } @@ -434,7 +434,7 @@ // NewGEP = (char *)Candidate + RHS * sizeof(IndexedType) uint64_t IndexedSize = DL->getTypeAllocSize(IndexedType); - Type *ElementType = GEP->getType()->getElementType(); + Type *ElementType = GEP->getResultElementType(); uint64_t ElementSize = DL->getTypeAllocSize(ElementType); // Another less rare case: because I is not necessarily the last index of the // GEP, the size of the type at the I-th index (IndexedSize) is not Index: lib/Transforms/Scalar/RewriteStatepointsForGC.cpp =================================================================== --- lib/Transforms/Scalar/RewriteStatepointsForGC.cpp +++ lib/Transforms/Scalar/RewriteStatepointsForGC.cpp @@ -2108,7 +2108,7 @@ } else if (GetElementPtrInst *GEP = dyn_cast(Instr)) { // Cost of the address calculation - Type *ValTy = GEP->getPointerOperandType()->getPointerElementType(); + Type *ValTy = GEP->getSourceElementType(); Cost += TTI.getAddressComputationCost(ValTy); // And cost of the GEP itself Index: lib/Transforms/Scalar/ScalarReplAggregates.cpp =================================================================== --- lib/Transforms/Scalar/ScalarReplAggregates.cpp +++ lib/Transforms/Scalar/ScalarReplAggregates.cpp @@ -510,15 +510,11 @@ if (GetElementPtrInst *GEP = dyn_cast(UI)) { // If this is a GEP with a variable indices, we can't handle it. - PointerType* PtrTy = dyn_cast(GEP->getPointerOperandType()); - if (!PtrTy) - return false; - // Compute the offset that this GEP adds to the pointer. SmallVector Indices(GEP->op_begin()+1, GEP->op_end()); Value *GEPNonConstantIdx = nullptr; if (!GEP->hasAllConstantIndices()) { - if (!isa(PtrTy->getElementType())) + if (!isa(GEP->getSourceElementType())) return false; if (NonConstantIdx) return false; @@ -528,7 +524,7 @@ HadDynamicAccess = true; } else GEPNonConstantIdx = NonConstantIdx; - uint64_t GEPOffset = DL.getIndexedOffset(PtrTy, + uint64_t GEPOffset = DL.getIndexedOffset(GEP->getPointerOperandType(), Indices); // See if all uses can be converted. if (!CanConvertToScalar(GEP, Offset+GEPOffset, GEPNonConstantIdx)) Index: lib/Transforms/Scalar/SeparateConstOffsetFromGEP.cpp =================================================================== --- lib/Transforms/Scalar/SeparateConstOffsetFromGEP.cpp +++ lib/Transforms/Scalar/SeparateConstOffsetFromGEP.cpp @@ -911,7 +911,7 @@ getAnalysis().getTTI( *GEP->getParent()->getParent()); unsigned AddrSpace = GEP->getPointerAddressSpace(); - if (!TTI.isLegalAddressingMode(GEP->getType()->getElementType(), + if (!TTI.isLegalAddressingMode(GEP->getResultElementType(), /*BaseGV=*/nullptr, AccumulativeByteOffset, /*HasBaseReg=*/true, /*Scale=*/0, AddrSpace)) { @@ -1018,7 +1018,7 @@ // unsigned.. Therefore, we cast ElementTypeSizeOfGEP to signed because it is // used with unsigned integers later. int64_t ElementTypeSizeOfGEP = static_cast( - DL->getTypeAllocSize(GEP->getType()->getElementType())); + DL->getTypeAllocSize(GEP->getResultElementType())); Type *IntPtrTy = DL->getIntPtrType(GEP->getType()); if (AccumulativeByteOffset % ElementTypeSizeOfGEP == 0) { // Very likely. As long as %gep is natually aligned, the byte offset we Index: lib/Transforms/Scalar/StraightLineStrengthReduce.cpp =================================================================== --- lib/Transforms/Scalar/StraightLineStrengthReduce.cpp +++ lib/Transforms/Scalar/StraightLineStrengthReduce.cpp @@ -270,7 +270,7 @@ } unsigned AddrSpace = GEP->getPointerAddressSpace(); - return TTI->isLegalAddressingMode(GEP->getType()->getElementType(), BaseGV, + return TTI->isLegalAddressingMode(GEP->getResultElementType(), BaseGV, BaseOffset, HasBaseReg, Scale, AddrSpace); } @@ -566,8 +566,7 @@ if (Basis.CandidateKind == Candidate::GEP) { APInt ElementSize( IndexOffset.getBitWidth(), - DL->getTypeAllocSize( - cast(Basis.Ins)->getType()->getElementType())); + DL->getTypeAllocSize(cast(Basis.Ins)->getResultElementType())); APInt Q, R; APInt::sdivrem(IndexOffset, ElementSize, Q, R); if (R.getSExtValue() == 0)