LegalizeTypesGeneric.cpp revision c7e77f91fecd662b198939a9a8ee0a0cc3828fc4
178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===-------- LegalizeTypesGeneric.cpp - Generic type legalization --------===// 278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// 378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// The LLVM Compiler Infrastructure 478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// 578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// This file is distributed under the University of Illinois Open Source 678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// License. See LICENSE.TXT for details. 778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// 878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===----------------------------------------------------------------------===// 978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// 1078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// This file implements generic type expansion and splitting for LegalizeTypes. 1178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// The routines here perform legalization when the details of the type (such as 1278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// whether it is an integer or a float) do not matter. 1378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// Expansion is the act of changing a computation in an illegal type to be a 14f2d754bb382cba0bad2774144ddac84be5354d16Duncan Sands// computation in two identical registers of a smaller type. The Lo/Hi part 15f2d754bb382cba0bad2774144ddac84be5354d16Duncan Sands// is required to be stored first in memory on little/big-endian machines. 1678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// Splitting is the act of changing a computation in an illegal type to be a 1778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// computation in two not necessarily identical registers of a smaller type. 18f2d754bb382cba0bad2774144ddac84be5354d16Duncan Sands// There are no requirements on how the type is represented in memory. 1978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// 2078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===----------------------------------------------------------------------===// 2178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 2278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands#include "LegalizeTypes.h" 230b8c9a80f20772c3793201ab5b251d3520b9cea3Chandler Carruth#include "llvm/IR/DataLayout.h" 2478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sandsusing namespace llvm; 2578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 2678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===----------------------------------------------------------------------===// 2778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// Generic Result Expansion. 2878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===----------------------------------------------------------------------===// 2978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 3078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// These routines assume that the Lo/Hi part is stored first in memory on 3178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// little/big-endian machines, followed by the Hi/Lo part. This means that 3278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// they cannot be used as is on vectors, for which Lo is always stored first. 334c19e12d28749c717d3b384962c9ec92796af1c9Duncan Sandsvoid DAGTypeLegalizer::ExpandRes_MERGE_VALUES(SDNode *N, unsigned ResNo, 3462bb16cfd10dd271eab6c31d982bca4d79138602Eli Friedman SDValue &Lo, SDValue &Hi) { 354c19e12d28749c717d3b384962c9ec92796af1c9Duncan Sands SDValue Op = DisintegrateMERGE_VALUES(N, ResNo); 3662bb16cfd10dd271eab6c31d982bca4d79138602Eli Friedman GetExpandedOp(Op, Lo, Hi); 3762bb16cfd10dd271eab6c31d982bca4d79138602Eli Friedman} 3878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 39bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peckvoid DAGTypeLegalizer::ExpandRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi) { 40e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OutVT = N->getValueType(0); 4123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NOutVT = TLI.getTypeToTransformTo(*DAG.getContext(), OutVT); 42475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InOp = N->getOperand(0); 43e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT InVT = InOp.getValueType(); 44ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 4578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 4678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Handle some special cases efficiently. 4778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands switch (getTypeAction(InVT)) { 4896e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypeLegal: 4996e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypePromoteInteger: 5078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands break; 5196e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypeSoftenFloat: 5278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Convert the integer operand instead. 5378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands SplitInteger(GetSoftenedFloat(InOp), Lo, Hi); 54bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo); 55bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Hi = DAG.getNode(ISD::BITCAST, dl, NOutVT, Hi); 5678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands return; 5796e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypeExpandInteger: 5896e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypeExpandFloat: 5978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Convert the expanded pieces of the input. 6078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetExpandedOp(InOp, Lo, Hi); 61bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo); 62bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Hi = DAG.getNode(ISD::BITCAST, dl, NOutVT, Hi); 6378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands return; 6496e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypeSplitVector: 6578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetSplitVector(InOp, Lo, Hi); 66f2d754bb382cba0bad2774144ddac84be5354d16Duncan Sands if (TLI.isBigEndian()) 67f2d754bb382cba0bad2774144ddac84be5354d16Duncan Sands std::swap(Lo, Hi); 68bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo); 69bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Hi = DAG.getNode(ISD::BITCAST, dl, NOutVT, Hi); 70f2d754bb382cba0bad2774144ddac84be5354d16Duncan Sands return; 7196e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypeScalarizeVector: 7278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Convert the element instead. 7378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands SplitInteger(BitConvertToInteger(GetScalarizedVector(InOp)), Lo, Hi); 74bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo); 75bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Hi = DAG.getNode(ISD::BITCAST, dl, NOutVT, Hi); 7678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands return; 7796e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypeWidenVector: { 78bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck assert(!(InVT.getVectorNumElements() & 1) && "Unsupported BITCAST"); 79aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang InOp = GetWidenedVector(InOp); 8023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT InNVT = EVT::getVectorVT(*DAG.getContext(), InVT.getVectorElementType(), 81aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang InVT.getVectorNumElements()/2); 82aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang Lo = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, InNVT, InOp, 83425b76c2314ff7ee7ad507011bdda1988ae481efTom Stellard DAG.getConstant(0, TLI.getVectorIdxTy())); 84aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang Hi = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, InNVT, InOp, 85425b76c2314ff7ee7ad507011bdda1988ae481efTom Stellard DAG.getConstant(InNVT.getVectorNumElements(), 86425b76c2314ff7ee7ad507011bdda1988ae481efTom Stellard TLI.getVectorIdxTy())); 87aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang if (TLI.isBigEndian()) 88aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang std::swap(Lo, Hi); 89bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo); 90bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Hi = DAG.getNode(ISD::BITCAST, dl, NOutVT, Hi); 91aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang return; 92aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang } 9378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands } 9478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 95f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman if (InVT.isVector() && OutVT.isInteger()) { 96bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck // Handle cases like i64 = BITCAST v1i64 on x86, where the operand 97f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman // is legal but the result is not. 98092122f124b6589a3a432473c1047bf5834df3c1Michael Liao unsigned NumElems = 2; 99bb7300224738e65f9a9945dc7df2f360b1d4feb6Michael Liao EVT ElemVT = NOutVT; 100bb7300224738e65f9a9945dc7df2f360b1d4feb6Michael Liao EVT NVT = EVT::getVectorVT(*DAG.getContext(), ElemVT, NumElems); 101092122f124b6589a3a432473c1047bf5834df3c1Michael Liao 102bb7300224738e65f9a9945dc7df2f360b1d4feb6Michael Liao // If <ElemVT * N> is not a legal type, try <ElemVT/2 * (N*2)>. 103092122f124b6589a3a432473c1047bf5834df3c1Michael Liao while (!isTypeLegal(NVT)) { 104bb7300224738e65f9a9945dc7df2f360b1d4feb6Michael Liao unsigned NewSizeInBits = ElemVT.getSizeInBits() / 2; 105092122f124b6589a3a432473c1047bf5834df3c1Michael Liao // If the element size is smaller than byte, bail. 106092122f124b6589a3a432473c1047bf5834df3c1Michael Liao if (NewSizeInBits < 8) 107092122f124b6589a3a432473c1047bf5834df3c1Michael Liao break; 108092122f124b6589a3a432473c1047bf5834df3c1Michael Liao NumElems *= 2; 109bb7300224738e65f9a9945dc7df2f360b1d4feb6Michael Liao ElemVT = EVT::getIntegerVT(*DAG.getContext(), NewSizeInBits); 110bb7300224738e65f9a9945dc7df2f360b1d4feb6Michael Liao NVT = EVT::getVectorVT(*DAG.getContext(), ElemVT, NumElems); 111092122f124b6589a3a432473c1047bf5834df3c1Michael Liao } 112f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman 113f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman if (isTypeLegal(NVT)) { 114bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue CastInOp = DAG.getNode(ISD::BITCAST, dl, NVT, InOp); 115092122f124b6589a3a432473c1047bf5834df3c1Michael Liao 116092122f124b6589a3a432473c1047bf5834df3c1Michael Liao SmallVector<SDValue, 8> Vals; 117092122f124b6589a3a432473c1047bf5834df3c1Michael Liao for (unsigned i = 0; i < NumElems; ++i) 118bb7300224738e65f9a9945dc7df2f360b1d4feb6Michael Liao Vals.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, ElemVT, 119425b76c2314ff7ee7ad507011bdda1988ae481efTom Stellard CastInOp, DAG.getConstant(i, 120425b76c2314ff7ee7ad507011bdda1988ae481efTom Stellard TLI.getVectorIdxTy()))); 121092122f124b6589a3a432473c1047bf5834df3c1Michael Liao 122092122f124b6589a3a432473c1047bf5834df3c1Michael Liao // Build Lo, Hi pair by pairing extracted elements if needed. 123092122f124b6589a3a432473c1047bf5834df3c1Michael Liao unsigned Slot = 0; 124092122f124b6589a3a432473c1047bf5834df3c1Michael Liao for (unsigned e = Vals.size(); e - Slot > 2; Slot += 2, e += 1) { 125092122f124b6589a3a432473c1047bf5834df3c1Michael Liao // Each iteration will BUILD_PAIR two nodes and append the result until 126092122f124b6589a3a432473c1047bf5834df3c1Michael Liao // there are only two nodes left, i.e. Lo and Hi. 127092122f124b6589a3a432473c1047bf5834df3c1Michael Liao SDValue LHS = Vals[Slot]; 128092122f124b6589a3a432473c1047bf5834df3c1Michael Liao SDValue RHS = Vals[Slot + 1]; 1297bbb9c7b4a21364c5b92e60520babf326beff3d8Ulrich Weigand 1307bbb9c7b4a21364c5b92e60520babf326beff3d8Ulrich Weigand if (TLI.isBigEndian()) 1317bbb9c7b4a21364c5b92e60520babf326beff3d8Ulrich Weigand std::swap(LHS, RHS); 1327bbb9c7b4a21364c5b92e60520babf326beff3d8Ulrich Weigand 133092122f124b6589a3a432473c1047bf5834df3c1Michael Liao Vals.push_back(DAG.getNode(ISD::BUILD_PAIR, dl, 134092122f124b6589a3a432473c1047bf5834df3c1Michael Liao EVT::getIntegerVT( 135092122f124b6589a3a432473c1047bf5834df3c1Michael Liao *DAG.getContext(), 136092122f124b6589a3a432473c1047bf5834df3c1Michael Liao LHS.getValueType().getSizeInBits() << 1), 137092122f124b6589a3a432473c1047bf5834df3c1Michael Liao LHS, RHS)); 138092122f124b6589a3a432473c1047bf5834df3c1Michael Liao } 139092122f124b6589a3a432473c1047bf5834df3c1Michael Liao Lo = Vals[Slot++]; 140092122f124b6589a3a432473c1047bf5834df3c1Michael Liao Hi = Vals[Slot++]; 141f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman 142f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman if (TLI.isBigEndian()) 143f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman std::swap(Lo, Hi); 1448c899ee031481dbece5f111379a274c848cb5902Duncan Sands 145f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman return; 146f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman } 147f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman } 148f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman 14947d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // Lower the bit-convert to a store/load from the stack. 15047d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands assert(NOutVT.isByteSized() && "Expanded type not byte sized!"); 15147d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 15247d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // Create the stack frame object. Make sure it is aligned for both 15347d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // the source and expanded destination types. 15447d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands unsigned Alignment = 1553574eca1b02600bac4e625297f4ecf745f4c4f32Micah Villmow TLI.getDataLayout()->getPrefTypeAlignment(NOutVT. 156cac25a9452c75b24e33fffe3390de8b2b8983e92Evan Cheng getTypeForEVT(*DAG.getContext())); 15747d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands SDValue StackPtr = DAG.CreateStackTemporary(InVT, Alignment); 158ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 159ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo PtrInfo = MachinePointerInfo::getFixedStack(SPFI); 16047d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 16147d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // Emit a store to the stack slot. 162ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Store = DAG.getStore(DAG.getEntryNode(), dl, InOp, StackPtr, PtrInfo, 1631e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 16447d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 16547d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // Load the first half from the stack slot. 166155615d7dc4e4fbfd3b7273720a76356468edf46Stephen Lin Lo = DAG.getLoad(NOutVT, dl, Store, StackPtr, PtrInfo, 167d752e0f7e64585839cb3a458ef52456eaebbea3cPete Cooper false, false, false, 0); 16847d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 16947d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // Increment the pointer to the other half. 17047d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands unsigned IncrementSize = NOutVT.getSizeInBits() / 8; 17135ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 172edd08f74289c6ba3b3f8e730e4ab825ef9bd6492Tom Stellard DAG.getConstant(IncrementSize, 173edd08f74289c6ba3b3f8e730e4ab825ef9bd6492Tom Stellard StackPtr.getValueType())); 17447d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 17547d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // Load the second half from the stack slot. 176ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Hi = DAG.getLoad(NOutVT, dl, Store, StackPtr, 177ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner PtrInfo.getWithOffset(IncrementSize), false, 178d752e0f7e64585839cb3a458ef52456eaebbea3cPete Cooper false, false, MinAlign(Alignment, IncrementSize)); 17947d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 18047d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // Handle endianness of the load. 18147d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands if (TLI.isBigEndian()) 18247d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands std::swap(Lo, Hi); 18378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 18478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 185475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandRes_BUILD_PAIR(SDNode *N, SDValue &Lo, 186475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 18778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Return the operands. 18878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands Lo = N->getOperand(0); 18978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands Hi = N->getOperand(1); 19078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 19178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 192475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandRes_EXTRACT_ELEMENT(SDNode *N, SDValue &Lo, 193475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 1944a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands GetExpandedOp(N->getOperand(0), Lo, Hi); 195f5aeb1a8e4cf272c7348376d185ef8d8267653e0Dan Gohman SDValue Part = cast<ConstantSDNode>(N->getOperand(1))->getZExtValue() ? 196f5aeb1a8e4cf272c7348376d185ef8d8267653e0Dan Gohman Hi : Lo; 1974a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands 1984a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands assert(Part.getValueType() == N->getValueType(0) && 1994a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands "Type twice as big as expanded type not itself expanded!"); 2004a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands 2012bee0afb7d023e029975abf7d3157759fa797d37Dan Gohman GetPairElements(Part, Lo, Hi); 2024a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands} 2034a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands 204475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo, 205475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 206475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldVec = N->getOperand(0); 20778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands unsigned OldElts = OldVec.getValueType().getVectorNumElements(); 2084e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands EVT OldEltVT = OldVec.getValueType().getVectorElementType(); 209ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 21078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 21178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Convert to a vector of the expanded element type, for example 21278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // <3 x i64> -> <6 x i32>. 213e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OldVT = N->getValueType(0); 21423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NewVT = TLI.getTypeToTransformTo(*DAG.getContext(), OldVT); 21578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 2164e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands if (OldVT != OldEltVT) { 2174e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands // The result of EXTRACT_VECTOR_ELT may be larger than the element type of 2184e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands // the input vector. If so, extend the elements of the input vector to the 2194e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands // same bitwidth as the result before expanding. 2204e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands assert(OldEltVT.bitsLT(OldVT) && "Result type smaller then element type!"); 2214e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands EVT NVecVT = EVT::getVectorVT(*DAG.getContext(), OldVT, OldElts); 2224e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands OldVec = DAG.getNode(ISD::ANY_EXTEND, dl, NVecVT, N->getOperand(0)); 2234e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands } 2244e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands 225bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue NewVec = DAG.getNode(ISD::BITCAST, dl, 226adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT::getVectorVT(*DAG.getContext(), 227adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng NewVT, 2*OldElts), 228adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng OldVec); 22978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 23078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Extract the elements at 2 * Idx and 2 * Idx + 1 from the new vector. 231475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Idx = N->getOperand(1); 23278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 233de06470330260f5937e7ca558f5f5b3e171f2ee5Dale Johannesen Idx = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, Idx); 23435ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Lo = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, NewVT, NewVec, Idx); 23578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 23635ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Idx = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, 23778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands DAG.getConstant(1, Idx.getValueType())); 23835ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Hi = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, NewVT, NewVec, Idx); 23978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 24078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (TLI.isBigEndian()) 24178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands std::swap(Lo, Hi); 24278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 24378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 244475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandRes_NormalLoad(SDNode *N, SDValue &Lo, 245475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 246ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands assert(ISD::isNormalLoad(N) && "This routine only for normal loads!"); 247ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 24878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 24978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands LoadSDNode *LD = cast<LoadSDNode>(N); 25023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), LD->getValueType(0)); 251475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = LD->getChain(); 252475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = LD->getBasePtr(); 25378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands unsigned Alignment = LD->getAlignment(); 25478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands bool isVolatile = LD->isVolatile(); 2551e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = LD->isNonTemporal(); 256d752e0f7e64585839cb3a458ef52456eaebbea3cPete Cooper bool isInvariant = LD->isInvariant(); 25766589dcc8fb5dcf0894a9a80a8dee890a4f3a379Richard Sandiford const MDNode *TBAAInfo = LD->getTBAAInfo(); 25878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 25978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(NVT.isByteSized() && "Expanded type not byte sized!"); 26078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 261ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Lo = DAG.getLoad(NVT, dl, Chain, Ptr, LD->getPointerInfo(), 26266589dcc8fb5dcf0894a9a80a8dee890a4f3a379Richard Sandiford isVolatile, isNonTemporal, isInvariant, Alignment, 26366589dcc8fb5dcf0894a9a80a8dee890a4f3a379Richard Sandiford TBAAInfo); 26478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 26578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Increment the pointer to the other half. 26678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands unsigned IncrementSize = NVT.getSizeInBits() / 8; 26735ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 268edd08f74289c6ba3b3f8e730e4ab825ef9bd6492Tom Stellard DAG.getConstant(IncrementSize, Ptr.getValueType())); 269ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Hi = DAG.getLoad(NVT, dl, Chain, Ptr, 270ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 271d752e0f7e64585839cb3a458ef52456eaebbea3cPete Cooper isVolatile, isNonTemporal, isInvariant, 27266589dcc8fb5dcf0894a9a80a8dee890a4f3a379Richard Sandiford MinAlign(Alignment, IncrementSize), TBAAInfo); 27378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 27478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Build a factor node to remember that this load is independent of the 27578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // other one. 276825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 27778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands Hi.getValue(1)); 27878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 27978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Handle endianness of the load. 28078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (TLI.isBigEndian()) 28178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands std::swap(Lo, Hi); 28278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 28378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Modified the chain - switch anything that used the old chain to use 28478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // the new one. 285475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Chain); 28678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 28778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 28821c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sandsvoid DAGTypeLegalizer::ExpandRes_VAARG(SDNode *N, SDValue &Lo, SDValue &Hi) { 28972d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola EVT OVT = N->getValueType(0); 29072d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), OVT); 29121c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands SDValue Chain = N->getOperand(0); 29221c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands SDValue Ptr = N->getOperand(1); 293ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 294cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola const unsigned Align = N->getConstantOperandVal(3); 29521c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands 29672d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola Lo = DAG.getVAArg(NVT, dl, Chain, Ptr, N->getOperand(2), Align); 297cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola Hi = DAG.getVAArg(NVT, dl, Lo.getValue(1), Ptr, N->getOperand(2), 0); 29821c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands 29921c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands // Handle endianness of the load. 30021c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands if (TLI.isBigEndian()) 30121c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands std::swap(Lo, Hi); 30221c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands 30321c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands // Modified the chain - switch anything that used the old chain to use 30421c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands // the new one. 30521c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands ReplaceValueWith(SDValue(N, 1), Hi.getValue(1)); 30621c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands} 30721c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands 308ae099d54428f4113f8a71c53314975fb8a8e8bbcDuncan Sands 30978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===--------------------------------------------------------------------===// 31078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// Generic Operand Expansion. 31178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===--------------------------------------------------------------------===// 31278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 313bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley PeckSDValue DAGTypeLegalizer::ExpandOp_BITCAST(SDNode *N) { 314ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 31578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (N->getValueType(0).isVector()) { 31678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // An illegal expanding type is being converted to a legal vector type. 31778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Make a two element vector out of the expanded parts and convert that 31878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // instead, but only if the new vector type is legal (otherwise there 31978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // is no point, and it might create expansion loops). For example, on 320bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck // x86 this turns v1i64 = BITCAST i64 into v1i64 = BITCAST v2i32. 321e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = N->getOperand(0).getValueType(); 322adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT NVT = EVT::getVectorVT(*DAG.getContext(), 323adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng TLI.getTypeToTransformTo(*DAG.getContext(), OVT), 324adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng 2); 32578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 32678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (isTypeLegal(NVT)) { 327475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Parts[2]; 32878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetExpandedOp(N->getOperand(0), Parts[0], Parts[1]); 32978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 33078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (TLI.isBigEndian()) 33178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands std::swap(Parts[0], Parts[1]); 33278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 333a87008d90b7d894cfca53d407642acfd7be2af3cEvan Cheng SDValue Vec = DAG.getNode(ISD::BUILD_VECTOR, dl, NVT, Parts, 2); 334bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck return DAG.getNode(ISD::BITCAST, dl, N->getValueType(0), Vec); 33578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands } 33678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands } 33778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 33878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Otherwise, store to a temporary and load out again as the new type. 33978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands return CreateStackStoreLoad(N->getOperand(0), N->getValueType(0)); 34078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 34178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 342475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandOp_BUILD_VECTOR(SDNode *N) { 34378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // The vector type is legal but the element type needs expansion. 344e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VecVT = N->getValueType(0); 34578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands unsigned NumElts = VecVT.getVectorNumElements(); 346e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OldVT = N->getOperand(0).getValueType(); 34723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NewVT = TLI.getTypeToTransformTo(*DAG.getContext(), OldVT); 348ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 34978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 350b1303d05a89972195de023fda432cc621375a27cBob Wilson assert(OldVT == VecVT.getVectorElementType() && 351b1303d05a89972195de023fda432cc621375a27cBob Wilson "BUILD_VECTOR operand type doesn't match vector element type!"); 352b1303d05a89972195de023fda432cc621375a27cBob Wilson 35378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Build a vector of twice the length out of the expanded elements. 35478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // For example <3 x i64> -> <6 x i32>. 355475871a144eb604ddaf37503397ba0941442e5fbDan Gohman std::vector<SDValue> NewElts; 35678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands NewElts.reserve(NumElts*2); 35778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 35878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands for (unsigned i = 0; i < NumElts; ++i) { 359475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 36078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetExpandedOp(N->getOperand(i), Lo, Hi); 36178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (TLI.isBigEndian()) 36278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands std::swap(Lo, Hi); 36378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands NewElts.push_back(Lo); 36478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands NewElts.push_back(Hi); 36578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands } 36678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 367a87008d90b7d894cfca53d407642acfd7be2af3cEvan Cheng SDValue NewVec = DAG.getNode(ISD::BUILD_VECTOR, dl, 368adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT::getVectorVT(*DAG.getContext(), 369adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng NewVT, NewElts.size()), 370adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng &NewElts[0], NewElts.size()); 37178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 37278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Convert the new vector to the old vector type. 373bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck return DAG.getNode(ISD::BITCAST, dl, VecVT, NewVec); 37478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 37578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 376475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandOp_EXTRACT_ELEMENT(SDNode *N) { 377475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 37878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetExpandedOp(N->getOperand(0), Lo, Hi); 379f5aeb1a8e4cf272c7348376d185ef8d8267653e0Dan Gohman return cast<ConstantSDNode>(N->getOperand(1))->getZExtValue() ? Hi : Lo; 38078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 38178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 382d17c0302763cfd0b3f6657d2493147552762ac07Mon P WangSDValue DAGTypeLegalizer::ExpandOp_INSERT_VECTOR_ELT(SDNode *N) { 383d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang // The vector type is legal but the element type needs expansion. 384e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VecVT = N->getValueType(0); 385d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang unsigned NumElts = VecVT.getVectorNumElements(); 386ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 387d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 388d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang SDValue Val = N->getOperand(1); 389e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OldEVT = Val.getValueType(); 39023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NewEVT = TLI.getTypeToTransformTo(*DAG.getContext(), OldEVT); 391d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 392d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang assert(OldEVT == VecVT.getVectorElementType() && 393d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang "Inserted element type doesn't match vector element type!"); 394d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 395d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang // Bitconvert to a vector of twice the length with elements of the expanded 396d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang // type, insert the expanded vector elements, and then convert back. 39723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NewVecVT = EVT::getVectorVT(*DAG.getContext(), NewEVT, NumElts*2); 398bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue NewVec = DAG.getNode(ISD::BITCAST, dl, 39935ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen NewVecVT, N->getOperand(0)); 400d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 401d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang SDValue Lo, Hi; 402d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang GetExpandedOp(Val, Lo, Hi); 403d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang if (TLI.isBigEndian()) 404d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang std::swap(Lo, Hi); 405d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 406d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang SDValue Idx = N->getOperand(2); 40735ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Idx = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, Idx); 40835ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen NewVec = DAG.getNode(ISD::INSERT_VECTOR_ELT, dl, NewVecVT, NewVec, Lo, Idx); 40935ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Idx = DAG.getNode(ISD::ADD, dl, 410425b76c2314ff7ee7ad507011bdda1988ae481efTom Stellard Idx.getValueType(), Idx, 411425b76c2314ff7ee7ad507011bdda1988ae481efTom Stellard DAG.getConstant(1, Idx.getValueType())); 41235ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen NewVec = DAG.getNode(ISD::INSERT_VECTOR_ELT, dl, NewVecVT, NewVec, Hi, Idx); 413d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 414d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang // Convert the new vector to the old vector type. 415bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck return DAG.getNode(ISD::BITCAST, dl, VecVT, NewVec); 416d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang} 417d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 418d17c0302763cfd0b3f6657d2493147552762ac07Mon P WangSDValue DAGTypeLegalizer::ExpandOp_SCALAR_TO_VECTOR(SDNode *N) { 419ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 420e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getValueType(0); 421b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands assert(VT.getVectorElementType() == N->getOperand(0).getValueType() && 422b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands "SCALAR_TO_VECTOR operand type doesn't match vector element type!"); 423d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang unsigned NumElts = VT.getVectorNumElements(); 424d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang SmallVector<SDValue, 16> Ops(NumElts); 425d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang Ops[0] = N->getOperand(0); 426e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen SDValue UndefVal = DAG.getUNDEF(Ops[0].getValueType()); 427d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang for (unsigned i = 1; i < NumElts; ++i) 428d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang Ops[i] = UndefVal; 429a87008d90b7d894cfca53d407642acfd7be2af3cEvan Cheng return DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], NumElts); 430d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang} 431d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 432475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandOp_NormalStore(SDNode *N, unsigned OpNo) { 433ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands assert(ISD::isNormalStore(N) && "This routine only for normal stores!"); 43478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(OpNo == 1 && "Can only expand the stored value so far"); 435ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 43678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 43778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands StoreSDNode *St = cast<StoreSDNode>(N); 438adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 439adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng St->getValue().getValueType()); 440475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = St->getChain(); 441475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = St->getBasePtr(); 44278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands unsigned Alignment = St->getAlignment(); 44378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands bool isVolatile = St->isVolatile(); 4441e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = St->isNonTemporal(); 44566589dcc8fb5dcf0894a9a80a8dee890a4f3a379Richard Sandiford const MDNode *TBAAInfo = St->getTBAAInfo(); 44678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 44778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(NVT.isByteSized() && "Expanded type not byte sized!"); 44878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands unsigned IncrementSize = NVT.getSizeInBits() / 8; 44978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 450475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 45178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetExpandedOp(St->getValue(), Lo, Hi); 45278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 45378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (TLI.isBigEndian()) 45478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands std::swap(Lo, Hi); 45578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 4566229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner Lo = DAG.getStore(Chain, dl, Lo, Ptr, St->getPointerInfo(), 45766589dcc8fb5dcf0894a9a80a8dee890a4f3a379Richard Sandiford isVolatile, isNonTemporal, Alignment, TBAAInfo); 45878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 45935ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 460edd08f74289c6ba3b3f8e730e4ab825ef9bd6492Tom Stellard DAG.getConstant(IncrementSize, Ptr.getValueType())); 4616229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner Hi = DAG.getStore(Chain, dl, Hi, Ptr, 4626229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner St->getPointerInfo().getWithOffset(IncrementSize), 4631e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, 46466589dcc8fb5dcf0894a9a80a8dee890a4f3a379Richard Sandiford MinAlign(Alignment, IncrementSize), TBAAInfo); 46578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 466825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 46778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 46878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 46978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 47078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===--------------------------------------------------------------------===// 47178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// Generic Result Splitting. 47278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===--------------------------------------------------------------------===// 47378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 47478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// Be careful to make no assumptions about which of Lo/Hi is stored first in 47578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// memory (for vectors it is always Lo first followed by Hi in the following 47678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// bytes; for integers and floats it is Lo first if and only if the machine is 47778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// little-endian). 47878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 4794c19e12d28749c717d3b384962c9ec92796af1c9Duncan Sandsvoid DAGTypeLegalizer::SplitRes_MERGE_VALUES(SDNode *N, unsigned ResNo, 480475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 4814c19e12d28749c717d3b384962c9ec92796af1c9Duncan Sands SDValue Op = DisintegrateMERGE_VALUES(N, ResNo); 48262bb16cfd10dd271eab6c31d982bca4d79138602Eli Friedman GetSplitOp(Op, Lo, Hi); 48378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 48478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 485475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::SplitRes_SELECT(SDNode *N, SDValue &Lo, 486475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 48728b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands SDValue LL, LH, RL, RH, CL, CH; 488ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 48978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetSplitOp(N->getOperand(1), LL, LH); 49078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetSplitOp(N->getOperand(2), RL, RH); 49178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 492475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Cond = N->getOperand(0); 49328b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands CL = CH = Cond; 49428b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands if (Cond.getValueType().isVector()) { 495c7e77f91fecd662b198939a9a8ee0a0cc3828fc4Juergen Ributzka if (Cond.getOpcode() == ISD::SETCC) { 496c7e77f91fecd662b198939a9a8ee0a0cc3828fc4Juergen Ributzka assert(Cond.getValueType() == getSetCCResultType(N->getValueType(0)) && 497c7e77f91fecd662b198939a9a8ee0a0cc3828fc4Juergen Ributzka "Condition has not been prepared for split!"); 498c7e77f91fecd662b198939a9a8ee0a0cc3828fc4Juergen Ributzka GetSplitVector(Cond, CL, CH); 499c7e77f91fecd662b198939a9a8ee0a0cc3828fc4Juergen Ributzka } else { 500c7e77f91fecd662b198939a9a8ee0a0cc3828fc4Juergen Ributzka EVT ETy = Cond.getValueType().getVectorElementType(); 501c7e77f91fecd662b198939a9a8ee0a0cc3828fc4Juergen Ributzka unsigned NumElements = Cond.getValueType().getVectorNumElements(); 502c7e77f91fecd662b198939a9a8ee0a0cc3828fc4Juergen Ributzka EVT VCondTy = EVT::getVectorVT(*DAG.getContext(), ETy, NumElements / 2); 503c7e77f91fecd662b198939a9a8ee0a0cc3828fc4Juergen Ributzka CL = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, VCondTy, Cond, 504c7e77f91fecd662b198939a9a8ee0a0cc3828fc4Juergen Ributzka DAG.getConstant(0, TLI.getVectorIdxTy())); 505c7e77f91fecd662b198939a9a8ee0a0cc3828fc4Juergen Ributzka CH = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, VCondTy, Cond, 506c7e77f91fecd662b198939a9a8ee0a0cc3828fc4Juergen Ributzka DAG.getConstant(NumElements / 2, TLI.getVectorIdxTy())); 507c7e77f91fecd662b198939a9a8ee0a0cc3828fc4Juergen Ributzka } 50828b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands } 50928b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands 51028b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands Lo = DAG.getNode(N->getOpcode(), dl, LL.getValueType(), CL, LL, RL); 51128b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands Hi = DAG.getNode(N->getOpcode(), dl, LH.getValueType(), CH, LH, RH); 51278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 51378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 514475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::SplitRes_SELECT_CC(SDNode *N, SDValue &Lo, 515475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 516475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LL, LH, RL, RH; 517ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 51878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetSplitOp(N->getOperand(2), LL, LH); 51978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetSplitOp(N->getOperand(3), RL, RH); 52078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 52135ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Lo = DAG.getNode(ISD::SELECT_CC, dl, LL.getValueType(), N->getOperand(0), 52278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands N->getOperand(1), LL, RL, N->getOperand(4)); 52335ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Hi = DAG.getNode(ISD::SELECT_CC, dl, LH.getValueType(), N->getOperand(0), 52478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands N->getOperand(1), LH, RH, N->getOperand(4)); 52578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 52678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 527475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::SplitRes_UNDEF(SDNode *N, SDValue &Lo, SDValue &Hi) { 528e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT LoVT, HiVT; 52978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetSplitDestVTs(N->getValueType(0), LoVT, HiVT); 530e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen Lo = DAG.getUNDEF(LoVT); 531e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen Hi = DAG.getUNDEF(HiVT); 53278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 533