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 26dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines#define DEBUG_TYPE "legalize-types" 27dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines 2878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===----------------------------------------------------------------------===// 2978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// Generic Result Expansion. 3078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===----------------------------------------------------------------------===// 3178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 3278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// These routines assume that the Lo/Hi part is stored first in memory on 3378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// little/big-endian machines, followed by the Hi/Lo part. This means that 3478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// they cannot be used as is on vectors, for which Lo is always stored first. 354c19e12d28749c717d3b384962c9ec92796af1c9Duncan Sandsvoid DAGTypeLegalizer::ExpandRes_MERGE_VALUES(SDNode *N, unsigned ResNo, 3662bb16cfd10dd271eab6c31d982bca4d79138602Eli Friedman SDValue &Lo, SDValue &Hi) { 374c19e12d28749c717d3b384962c9ec92796af1c9Duncan Sands SDValue Op = DisintegrateMERGE_VALUES(N, ResNo); 3862bb16cfd10dd271eab6c31d982bca4d79138602Eli Friedman GetExpandedOp(Op, Lo, Hi); 3962bb16cfd10dd271eab6c31d982bca4d79138602Eli Friedman} 4078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 41bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peckvoid DAGTypeLegalizer::ExpandRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi) { 42e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OutVT = N->getValueType(0); 4323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NOutVT = TLI.getTypeToTransformTo(*DAG.getContext(), OutVT); 44475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InOp = N->getOperand(0); 45e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT InVT = InOp.getValueType(); 46ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 4778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 4878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Handle some special cases efficiently. 4978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands switch (getTypeAction(InVT)) { 5096e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypeLegal: 5196e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypePromoteInteger: 5278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands break; 5396e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypeSoftenFloat: 5478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Convert the integer operand instead. 5578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands SplitInteger(GetSoftenedFloat(InOp), Lo, Hi); 56bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo); 57bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Hi = DAG.getNode(ISD::BITCAST, dl, NOutVT, Hi); 5878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands return; 5996e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypeExpandInteger: 6096e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypeExpandFloat: 6178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Convert the expanded pieces of the input. 6278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetExpandedOp(InOp, Lo, Hi); 63cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines if (TLI.hasBigEndianPartOrdering(InVT) != 64cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines TLI.hasBigEndianPartOrdering(OutVT)) 65cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines std::swap(Lo, Hi); 66bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo); 67bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Hi = DAG.getNode(ISD::BITCAST, dl, NOutVT, Hi); 6878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands return; 6996e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypeSplitVector: 7078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetSplitVector(InOp, Lo, Hi); 71cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines if (TLI.hasBigEndianPartOrdering(OutVT)) 72f2d754bb382cba0bad2774144ddac84be5354d16Duncan Sands std::swap(Lo, Hi); 73bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo); 74bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Hi = DAG.getNode(ISD::BITCAST, dl, NOutVT, Hi); 75f2d754bb382cba0bad2774144ddac84be5354d16Duncan Sands return; 7696e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypeScalarizeVector: 7778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Convert the element instead. 7878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands SplitInteger(BitConvertToInteger(GetScalarizedVector(InOp)), Lo, Hi); 79bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo); 80bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Hi = DAG.getNode(ISD::BITCAST, dl, NOutVT, Hi); 8178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands return; 8296e0c5477c41b316263e894bbb5821c7cdeb25efNadav Rotem case TargetLowering::TypeWidenVector: { 83bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck assert(!(InVT.getVectorNumElements() & 1) && "Unsupported BITCAST"); 84aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang InOp = GetWidenedVector(InOp); 85ee287ca22abcce9f769618c107ff3f46aa2d0cbaBill Wendling EVT LoVT, HiVT; 8636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines std::tie(LoVT, HiVT) = DAG.GetSplitDestVTs(InVT); 8736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines std::tie(Lo, Hi) = DAG.SplitVector(InOp, dl, LoVT, HiVT); 88cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines if (TLI.hasBigEndianPartOrdering(OutVT)) 89aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang std::swap(Lo, Hi); 90bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo); 91bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Hi = DAG.getNode(ISD::BITCAST, dl, NOutVT, Hi); 92aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang return; 93aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang } 9478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands } 9578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 96f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman if (InVT.isVector() && OutVT.isInteger()) { 97bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck // Handle cases like i64 = BITCAST v1i64 on x86, where the operand 98f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman // is legal but the result is not. 99092122f124b6589a3a432473c1047bf5834df3c1Michael Liao unsigned NumElems = 2; 100bb7300224738e65f9a9945dc7df2f360b1d4feb6Michael Liao EVT ElemVT = NOutVT; 101bb7300224738e65f9a9945dc7df2f360b1d4feb6Michael Liao EVT NVT = EVT::getVectorVT(*DAG.getContext(), ElemVT, NumElems); 102092122f124b6589a3a432473c1047bf5834df3c1Michael Liao 103bb7300224738e65f9a9945dc7df2f360b1d4feb6Michael Liao // If <ElemVT * N> is not a legal type, try <ElemVT/2 * (N*2)>. 104092122f124b6589a3a432473c1047bf5834df3c1Michael Liao while (!isTypeLegal(NVT)) { 105bb7300224738e65f9a9945dc7df2f360b1d4feb6Michael Liao unsigned NewSizeInBits = ElemVT.getSizeInBits() / 2; 106092122f124b6589a3a432473c1047bf5834df3c1Michael Liao // If the element size is smaller than byte, bail. 107092122f124b6589a3a432473c1047bf5834df3c1Michael Liao if (NewSizeInBits < 8) 108092122f124b6589a3a432473c1047bf5834df3c1Michael Liao break; 109092122f124b6589a3a432473c1047bf5834df3c1Michael Liao NumElems *= 2; 110bb7300224738e65f9a9945dc7df2f360b1d4feb6Michael Liao ElemVT = EVT::getIntegerVT(*DAG.getContext(), NewSizeInBits); 111bb7300224738e65f9a9945dc7df2f360b1d4feb6Michael Liao NVT = EVT::getVectorVT(*DAG.getContext(), ElemVT, NumElems); 112092122f124b6589a3a432473c1047bf5834df3c1Michael Liao } 113f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman 114f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman if (isTypeLegal(NVT)) { 115bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue CastInOp = DAG.getNode(ISD::BITCAST, dl, NVT, InOp); 116092122f124b6589a3a432473c1047bf5834df3c1Michael Liao 117092122f124b6589a3a432473c1047bf5834df3c1Michael Liao SmallVector<SDValue, 8> Vals; 118092122f124b6589a3a432473c1047bf5834df3c1Michael Liao for (unsigned i = 0; i < NumElems; ++i) 119bb7300224738e65f9a9945dc7df2f360b1d4feb6Michael Liao Vals.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, ElemVT, 120425b76c2314ff7ee7ad507011bdda1988ae481efTom Stellard CastInOp, DAG.getConstant(i, 121425b76c2314ff7ee7ad507011bdda1988ae481efTom Stellard TLI.getVectorIdxTy()))); 122092122f124b6589a3a432473c1047bf5834df3c1Michael Liao 123092122f124b6589a3a432473c1047bf5834df3c1Michael Liao // Build Lo, Hi pair by pairing extracted elements if needed. 124092122f124b6589a3a432473c1047bf5834df3c1Michael Liao unsigned Slot = 0; 125092122f124b6589a3a432473c1047bf5834df3c1Michael Liao for (unsigned e = Vals.size(); e - Slot > 2; Slot += 2, e += 1) { 126092122f124b6589a3a432473c1047bf5834df3c1Michael Liao // Each iteration will BUILD_PAIR two nodes and append the result until 127092122f124b6589a3a432473c1047bf5834df3c1Michael Liao // there are only two nodes left, i.e. Lo and Hi. 128092122f124b6589a3a432473c1047bf5834df3c1Michael Liao SDValue LHS = Vals[Slot]; 129092122f124b6589a3a432473c1047bf5834df3c1Michael Liao SDValue RHS = Vals[Slot + 1]; 1307bbb9c7b4a21364c5b92e60520babf326beff3d8Ulrich Weigand 1317bbb9c7b4a21364c5b92e60520babf326beff3d8Ulrich Weigand if (TLI.isBigEndian()) 1327bbb9c7b4a21364c5b92e60520babf326beff3d8Ulrich Weigand std::swap(LHS, RHS); 1337bbb9c7b4a21364c5b92e60520babf326beff3d8Ulrich Weigand 134092122f124b6589a3a432473c1047bf5834df3c1Michael Liao Vals.push_back(DAG.getNode(ISD::BUILD_PAIR, dl, 135092122f124b6589a3a432473c1047bf5834df3c1Michael Liao EVT::getIntegerVT( 136092122f124b6589a3a432473c1047bf5834df3c1Michael Liao *DAG.getContext(), 137092122f124b6589a3a432473c1047bf5834df3c1Michael Liao LHS.getValueType().getSizeInBits() << 1), 138092122f124b6589a3a432473c1047bf5834df3c1Michael Liao LHS, RHS)); 139092122f124b6589a3a432473c1047bf5834df3c1Michael Liao } 140092122f124b6589a3a432473c1047bf5834df3c1Michael Liao Lo = Vals[Slot++]; 141092122f124b6589a3a432473c1047bf5834df3c1Michael Liao Hi = Vals[Slot++]; 142f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman 143f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman if (TLI.isBigEndian()) 144f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman std::swap(Lo, Hi); 1458c899ee031481dbece5f111379a274c848cb5902Duncan Sands 146f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman return; 147f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman } 148f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman } 149f10d3a7bcda97d28f9d325cb58cec7e17d7ed101Eli Friedman 15047d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // Lower the bit-convert to a store/load from the stack. 15147d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands assert(NOutVT.isByteSized() && "Expanded type not byte sized!"); 15247d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 15347d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // Create the stack frame object. Make sure it is aligned for both 15447d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // the source and expanded destination types. 15547d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands unsigned Alignment = 1563574eca1b02600bac4e625297f4ecf745f4c4f32Micah Villmow TLI.getDataLayout()->getPrefTypeAlignment(NOutVT. 157cac25a9452c75b24e33fffe3390de8b2b8983e92Evan Cheng getTypeForEVT(*DAG.getContext())); 15847d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands SDValue StackPtr = DAG.CreateStackTemporary(InVT, Alignment); 159ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 160ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo PtrInfo = MachinePointerInfo::getFixedStack(SPFI); 16147d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 16247d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // Emit a store to the stack slot. 163ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Store = DAG.getStore(DAG.getEntryNode(), dl, InOp, StackPtr, PtrInfo, 1641e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 16547d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 16647d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // Load the first half from the stack slot. 167155615d7dc4e4fbfd3b7273720a76356468edf46Stephen Lin Lo = DAG.getLoad(NOutVT, dl, Store, StackPtr, PtrInfo, 168d752e0f7e64585839cb3a458ef52456eaebbea3cPete Cooper false, false, false, 0); 16947d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 17047d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // Increment the pointer to the other half. 17147d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands unsigned IncrementSize = NOutVT.getSizeInBits() / 8; 17235ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 173edd08f74289c6ba3b3f8e730e4ab825ef9bd6492Tom Stellard DAG.getConstant(IncrementSize, 174edd08f74289c6ba3b3f8e730e4ab825ef9bd6492Tom Stellard StackPtr.getValueType())); 17547d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 17647d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // Load the second half from the stack slot. 177ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Hi = DAG.getLoad(NOutVT, dl, Store, StackPtr, 178ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner PtrInfo.getWithOffset(IncrementSize), false, 179d752e0f7e64585839cb3a458ef52456eaebbea3cPete Cooper false, false, MinAlign(Alignment, IncrementSize)); 18047d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 18147d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // Handle endianness of the load. 182cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines if (TLI.hasBigEndianPartOrdering(OutVT)) 18347d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands std::swap(Lo, Hi); 18478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 18578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 186475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandRes_BUILD_PAIR(SDNode *N, SDValue &Lo, 187475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 18878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Return the operands. 18978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands Lo = N->getOperand(0); 19078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands Hi = N->getOperand(1); 19178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 19278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 193475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandRes_EXTRACT_ELEMENT(SDNode *N, SDValue &Lo, 194475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 1954a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands GetExpandedOp(N->getOperand(0), Lo, Hi); 196f5aeb1a8e4cf272c7348376d185ef8d8267653e0Dan Gohman SDValue Part = cast<ConstantSDNode>(N->getOperand(1))->getZExtValue() ? 197f5aeb1a8e4cf272c7348376d185ef8d8267653e0Dan Gohman Hi : Lo; 1984a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands 1994a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands assert(Part.getValueType() == N->getValueType(0) && 2004a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands "Type twice as big as expanded type not itself expanded!"); 2014a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands 2022bee0afb7d023e029975abf7d3157759fa797d37Dan Gohman GetPairElements(Part, Lo, Hi); 2034a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands} 2044a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands 205475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo, 206475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 207475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldVec = N->getOperand(0); 20878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands unsigned OldElts = OldVec.getValueType().getVectorNumElements(); 2094e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands EVT OldEltVT = OldVec.getValueType().getVectorElementType(); 210ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 21178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 21278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Convert to a vector of the expanded element type, for example 21378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // <3 x i64> -> <6 x i32>. 214e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OldVT = N->getValueType(0); 21523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NewVT = TLI.getTypeToTransformTo(*DAG.getContext(), OldVT); 21678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 2174e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands if (OldVT != OldEltVT) { 2184e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands // The result of EXTRACT_VECTOR_ELT may be larger than the element type of 2194e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands // the input vector. If so, extend the elements of the input vector to the 2204e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands // same bitwidth as the result before expanding. 2214e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands assert(OldEltVT.bitsLT(OldVT) && "Result type smaller then element type!"); 2224e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands EVT NVecVT = EVT::getVectorVT(*DAG.getContext(), OldVT, OldElts); 2234e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands OldVec = DAG.getNode(ISD::ANY_EXTEND, dl, NVecVT, N->getOperand(0)); 2244e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands } 2254e8982a34da69effe23ce9c553680b19d7d57551Duncan Sands 226bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue NewVec = DAG.getNode(ISD::BITCAST, dl, 227adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT::getVectorVT(*DAG.getContext(), 228adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng NewVT, 2*OldElts), 229adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng OldVec); 23078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 23178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Extract the elements at 2 * Idx and 2 * Idx + 1 from the new vector. 232475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Idx = N->getOperand(1); 23378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 234de06470330260f5937e7ca558f5f5b3e171f2ee5Dale Johannesen Idx = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, Idx); 23535ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Lo = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, NewVT, NewVec, Idx); 23678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 23735ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Idx = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, 23878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands DAG.getConstant(1, Idx.getValueType())); 23935ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Hi = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, NewVT, NewVec, Idx); 24078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 24178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (TLI.isBigEndian()) 24278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands std::swap(Lo, Hi); 24378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 24478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 245475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandRes_NormalLoad(SDNode *N, SDValue &Lo, 246475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 247ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands assert(ISD::isNormalLoad(N) && "This routine only for normal loads!"); 248ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 24978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 25078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands LoadSDNode *LD = cast<LoadSDNode>(N); 251cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines EVT ValueVT = LD->getValueType(0); 252cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), ValueVT); 253475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = LD->getChain(); 254475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = LD->getBasePtr(); 25578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands unsigned Alignment = LD->getAlignment(); 25678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands bool isVolatile = LD->isVolatile(); 2571e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = LD->isNonTemporal(); 258d752e0f7e64585839cb3a458ef52456eaebbea3cPete Cooper bool isInvariant = LD->isInvariant(); 25966589dcc8fb5dcf0894a9a80a8dee890a4f3a379Richard Sandiford const MDNode *TBAAInfo = LD->getTBAAInfo(); 26078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 26178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(NVT.isByteSized() && "Expanded type not byte sized!"); 26278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 263ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Lo = DAG.getLoad(NVT, dl, Chain, Ptr, LD->getPointerInfo(), 26466589dcc8fb5dcf0894a9a80a8dee890a4f3a379Richard Sandiford isVolatile, isNonTemporal, isInvariant, Alignment, 26566589dcc8fb5dcf0894a9a80a8dee890a4f3a379Richard Sandiford TBAAInfo); 26678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 26778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Increment the pointer to the other half. 26878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands unsigned IncrementSize = NVT.getSizeInBits() / 8; 26935ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 270edd08f74289c6ba3b3f8e730e4ab825ef9bd6492Tom Stellard DAG.getConstant(IncrementSize, Ptr.getValueType())); 271ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Hi = DAG.getLoad(NVT, dl, Chain, Ptr, 272ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 273d752e0f7e64585839cb3a458ef52456eaebbea3cPete Cooper isVolatile, isNonTemporal, isInvariant, 27466589dcc8fb5dcf0894a9a80a8dee890a4f3a379Richard Sandiford MinAlign(Alignment, IncrementSize), TBAAInfo); 27578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 27678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Build a factor node to remember that this load is independent of the 27778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // other one. 278825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 27978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands Hi.getValue(1)); 28078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 28178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Handle endianness of the load. 282cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines if (TLI.hasBigEndianPartOrdering(ValueVT)) 28378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands std::swap(Lo, Hi); 28478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 28578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Modified the chain - switch anything that used the old chain to use 28678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // the new one. 287475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Chain); 28878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 28978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 29021c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sandsvoid DAGTypeLegalizer::ExpandRes_VAARG(SDNode *N, SDValue &Lo, SDValue &Hi) { 29172d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola EVT OVT = N->getValueType(0); 29272d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), OVT); 29321c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands SDValue Chain = N->getOperand(0); 29421c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands SDValue Ptr = N->getOperand(1); 295ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 296cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola const unsigned Align = N->getConstantOperandVal(3); 29721c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands 29872d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola Lo = DAG.getVAArg(NVT, dl, Chain, Ptr, N->getOperand(2), Align); 299cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola Hi = DAG.getVAArg(NVT, dl, Lo.getValue(1), Ptr, N->getOperand(2), 0); 30021c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands 30121c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands // Handle endianness of the load. 302cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines if (TLI.hasBigEndianPartOrdering(OVT)) 30321c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands std::swap(Lo, Hi); 30421c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands 30521c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands // Modified the chain - switch anything that used the old chain to use 30621c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands // the new one. 30721c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands ReplaceValueWith(SDValue(N, 1), Hi.getValue(1)); 30821c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands} 30921c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands 310ae099d54428f4113f8a71c53314975fb8a8e8bbcDuncan Sands 31178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===--------------------------------------------------------------------===// 31278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// Generic Operand Expansion. 31378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===--------------------------------------------------------------------===// 31478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 315f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendlingvoid DAGTypeLegalizer::IntegerToVector(SDValue Op, unsigned NumElements, 316f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling SmallVectorImpl<SDValue> &Ops, 317f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling EVT EltVT) { 318f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling assert(Op.getValueType().isInteger()); 319f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling SDLoc DL(Op); 320f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling SDValue Parts[2]; 321f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling 322f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling if (NumElements > 1) { 323f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling NumElements >>= 1; 324f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling SplitInteger(Op, Parts[0], Parts[1]); 325f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling if (TLI.isBigEndian()) 326f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling std::swap(Parts[0], Parts[1]); 327f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling IntegerToVector(Parts[0], NumElements, Ops, EltVT); 328f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling IntegerToVector(Parts[1], NumElements, Ops, EltVT); 329f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling } else { 330f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling Ops.push_back(DAG.getNode(ISD::BITCAST, DL, EltVT, Op)); 331f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling } 332f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling} 333f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling 334bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley PeckSDValue DAGTypeLegalizer::ExpandOp_BITCAST(SDNode *N) { 335ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 33678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (N->getValueType(0).isVector()) { 33778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // An illegal expanding type is being converted to a legal vector type. 33878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Make a two element vector out of the expanded parts and convert that 33978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // instead, but only if the new vector type is legal (otherwise there 34078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // is no point, and it might create expansion loops). For example, on 341bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck // x86 this turns v1i64 = BITCAST i64 into v1i64 = BITCAST v2i32. 342f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling // 343f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling // FIXME: I'm not sure why we are first trying to split the input into 344f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling // a 2 element vector, so I'm leaving it here to maintain the current 345f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling // behavior. 346f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling unsigned NumElts = 2; 347e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = N->getOperand(0).getValueType(); 348adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT NVT = EVT::getVectorVT(*DAG.getContext(), 349adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng TLI.getTypeToTransformTo(*DAG.getContext(), OVT), 350f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling NumElts); 351f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling if (!isTypeLegal(NVT)) { 352f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling // If we can't find a legal type by splitting the integer in half, 353f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling // then we can use the node's value type. 354f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling NumElts = N->getValueType(0).getVectorNumElements(); 355f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling NVT = N->getValueType(0); 356f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling } 35778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 358f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling SmallVector<SDValue, 8> Ops; 359f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling IntegerToVector(N->getOperand(0), NumElts, Ops, NVT.getVectorElementType()); 36078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 361dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines SDValue Vec = DAG.getNode(ISD::BUILD_VECTOR, dl, NVT, 362dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines makeArrayRef(Ops.data(), NumElts)); 363f0061998dd1256df1ba933e80fdad2f594ea3f50Bill Wendling return DAG.getNode(ISD::BITCAST, dl, N->getValueType(0), Vec); 36478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands } 36578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 36678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Otherwise, store to a temporary and load out again as the new type. 36778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands return CreateStackStoreLoad(N->getOperand(0), N->getValueType(0)); 36878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 36978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 370475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandOp_BUILD_VECTOR(SDNode *N) { 37178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // The vector type is legal but the element type needs expansion. 372e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VecVT = N->getValueType(0); 37378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands unsigned NumElts = VecVT.getVectorNumElements(); 374e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OldVT = N->getOperand(0).getValueType(); 37523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NewVT = TLI.getTypeToTransformTo(*DAG.getContext(), OldVT); 376ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 37778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 378b1303d05a89972195de023fda432cc621375a27cBob Wilson assert(OldVT == VecVT.getVectorElementType() && 379b1303d05a89972195de023fda432cc621375a27cBob Wilson "BUILD_VECTOR operand type doesn't match vector element type!"); 380b1303d05a89972195de023fda432cc621375a27cBob Wilson 38178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Build a vector of twice the length out of the expanded elements. 38278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // For example <3 x i64> -> <6 x i32>. 383475871a144eb604ddaf37503397ba0941442e5fbDan Gohman std::vector<SDValue> NewElts; 38478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands NewElts.reserve(NumElts*2); 38578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 38678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands for (unsigned i = 0; i < NumElts; ++i) { 387475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 38878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetExpandedOp(N->getOperand(i), Lo, Hi); 38978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (TLI.isBigEndian()) 39078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands std::swap(Lo, Hi); 39178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands NewElts.push_back(Lo); 39278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands NewElts.push_back(Hi); 39378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands } 39478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 395a87008d90b7d894cfca53d407642acfd7be2af3cEvan Cheng SDValue NewVec = DAG.getNode(ISD::BUILD_VECTOR, dl, 396adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT::getVectorVT(*DAG.getContext(), 397adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng NewVT, NewElts.size()), 398dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines NewElts); 39978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 40078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands // Convert the new vector to the old vector type. 401bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck return DAG.getNode(ISD::BITCAST, dl, VecVT, NewVec); 40278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 40378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 404475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandOp_EXTRACT_ELEMENT(SDNode *N) { 405475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 40678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetExpandedOp(N->getOperand(0), Lo, Hi); 407f5aeb1a8e4cf272c7348376d185ef8d8267653e0Dan Gohman return cast<ConstantSDNode>(N->getOperand(1))->getZExtValue() ? Hi : Lo; 40878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 40978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 410d17c0302763cfd0b3f6657d2493147552762ac07Mon P WangSDValue DAGTypeLegalizer::ExpandOp_INSERT_VECTOR_ELT(SDNode *N) { 411d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang // The vector type is legal but the element type needs expansion. 412e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VecVT = N->getValueType(0); 413d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang unsigned NumElts = VecVT.getVectorNumElements(); 414ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 415d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 416d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang SDValue Val = N->getOperand(1); 417e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OldEVT = Val.getValueType(); 41823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NewEVT = TLI.getTypeToTransformTo(*DAG.getContext(), OldEVT); 419d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 420d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang assert(OldEVT == VecVT.getVectorElementType() && 421d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang "Inserted element type doesn't match vector element type!"); 422d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 423d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang // Bitconvert to a vector of twice the length with elements of the expanded 424d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang // type, insert the expanded vector elements, and then convert back. 42523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NewVecVT = EVT::getVectorVT(*DAG.getContext(), NewEVT, NumElts*2); 426bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue NewVec = DAG.getNode(ISD::BITCAST, dl, 42735ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen NewVecVT, N->getOperand(0)); 428d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 429d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang SDValue Lo, Hi; 430d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang GetExpandedOp(Val, Lo, Hi); 431d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang if (TLI.isBigEndian()) 432d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang std::swap(Lo, Hi); 433d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 434d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang SDValue Idx = N->getOperand(2); 43535ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Idx = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, Idx); 43635ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen NewVec = DAG.getNode(ISD::INSERT_VECTOR_ELT, dl, NewVecVT, NewVec, Lo, Idx); 43735ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Idx = DAG.getNode(ISD::ADD, dl, 438425b76c2314ff7ee7ad507011bdda1988ae481efTom Stellard Idx.getValueType(), Idx, 439425b76c2314ff7ee7ad507011bdda1988ae481efTom Stellard DAG.getConstant(1, Idx.getValueType())); 44035ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen NewVec = DAG.getNode(ISD::INSERT_VECTOR_ELT, dl, NewVecVT, NewVec, Hi, Idx); 441d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 442d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang // Convert the new vector to the old vector type. 443bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck return DAG.getNode(ISD::BITCAST, dl, VecVT, NewVec); 444d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang} 445d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 446d17c0302763cfd0b3f6657d2493147552762ac07Mon P WangSDValue DAGTypeLegalizer::ExpandOp_SCALAR_TO_VECTOR(SDNode *N) { 447ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 448e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getValueType(0); 449b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands assert(VT.getVectorElementType() == N->getOperand(0).getValueType() && 450b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands "SCALAR_TO_VECTOR operand type doesn't match vector element type!"); 451d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang unsigned NumElts = VT.getVectorNumElements(); 452d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang SmallVector<SDValue, 16> Ops(NumElts); 453d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang Ops[0] = N->getOperand(0); 454e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen SDValue UndefVal = DAG.getUNDEF(Ops[0].getValueType()); 455d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang for (unsigned i = 1; i < NumElts; ++i) 456d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang Ops[i] = UndefVal; 457dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return DAG.getNode(ISD::BUILD_VECTOR, dl, VT, Ops); 458d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang} 459d17c0302763cfd0b3f6657d2493147552762ac07Mon P Wang 460475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandOp_NormalStore(SDNode *N, unsigned OpNo) { 461ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands assert(ISD::isNormalStore(N) && "This routine only for normal stores!"); 46278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(OpNo == 1 && "Can only expand the stored value so far"); 463ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 46478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 46578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands StoreSDNode *St = cast<StoreSDNode>(N); 466cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines EVT ValueVT = St->getValue().getValueType(); 467cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), ValueVT); 468475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = St->getChain(); 469475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = St->getBasePtr(); 47078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands unsigned Alignment = St->getAlignment(); 47178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands bool isVolatile = St->isVolatile(); 4721e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = St->isNonTemporal(); 47366589dcc8fb5dcf0894a9a80a8dee890a4f3a379Richard Sandiford const MDNode *TBAAInfo = St->getTBAAInfo(); 47478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 47578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(NVT.isByteSized() && "Expanded type not byte sized!"); 47678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands unsigned IncrementSize = NVT.getSizeInBits() / 8; 47778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 478475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 47978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetExpandedOp(St->getValue(), Lo, Hi); 48078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 481cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines if (TLI.hasBigEndianPartOrdering(ValueVT)) 48278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands std::swap(Lo, Hi); 48378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 4846229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner Lo = DAG.getStore(Chain, dl, Lo, Ptr, St->getPointerInfo(), 48566589dcc8fb5dcf0894a9a80a8dee890a4f3a379Richard Sandiford isVolatile, isNonTemporal, Alignment, TBAAInfo); 48678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 48735ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 488edd08f74289c6ba3b3f8e730e4ab825ef9bd6492Tom Stellard DAG.getConstant(IncrementSize, Ptr.getValueType())); 4896229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner Hi = DAG.getStore(Chain, dl, Hi, Ptr, 4906229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner St->getPointerInfo().getWithOffset(IncrementSize), 4911e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, 49266589dcc8fb5dcf0894a9a80a8dee890a4f3a379Richard Sandiford MinAlign(Alignment, IncrementSize), TBAAInfo); 49378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 494825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 49578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 49678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 49778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 49878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===--------------------------------------------------------------------===// 49978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// Generic Result Splitting. 50078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands//===--------------------------------------------------------------------===// 50178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 50278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// Be careful to make no assumptions about which of Lo/Hi is stored first in 50378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// memory (for vectors it is always Lo first followed by Hi in the following 50478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// bytes; for integers and floats it is Lo first if and only if the machine is 50578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// little-endian). 50678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 5074c19e12d28749c717d3b384962c9ec92796af1c9Duncan Sandsvoid DAGTypeLegalizer::SplitRes_MERGE_VALUES(SDNode *N, unsigned ResNo, 508475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 5094c19e12d28749c717d3b384962c9ec92796af1c9Duncan Sands SDValue Op = DisintegrateMERGE_VALUES(N, ResNo); 51062bb16cfd10dd271eab6c31d982bca4d79138602Eli Friedman GetSplitOp(Op, Lo, Hi); 51178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 51278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 513475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::SplitRes_SELECT(SDNode *N, SDValue &Lo, 514475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 51528b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands SDValue LL, LH, RL, RH, CL, CH; 516ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 51778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetSplitOp(N->getOperand(1), LL, LH); 51878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetSplitOp(N->getOperand(2), RL, RH); 51978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 520475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Cond = N->getOperand(0); 52128b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands CL = CH = Cond; 52228b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands if (Cond.getValueType().isVector()) { 523f62b274a93d4014d56fa3a656f4fac6e7d827358Bill Wendling // Check if there are already splitted versions of the vector available and 524f62b274a93d4014d56fa3a656f4fac6e7d827358Bill Wendling // use those instead of splitting the mask operand again. 525f62b274a93d4014d56fa3a656f4fac6e7d827358Bill Wendling if (getTypeAction(Cond.getValueType()) == TargetLowering::TypeSplitVector) 526c7e77f91fecd662b198939a9a8ee0a0cc3828fc4Juergen Ributzka GetSplitVector(Cond, CL, CH); 527f62b274a93d4014d56fa3a656f4fac6e7d827358Bill Wendling else 52836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines std::tie(CL, CH) = DAG.SplitVector(Cond, dl); 52928b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands } 53028b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands 53128b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands Lo = DAG.getNode(N->getOpcode(), dl, LL.getValueType(), CL, LL, RL); 53228b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands Hi = DAG.getNode(N->getOpcode(), dl, LH.getValueType(), CH, LH, RH); 53378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 53478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 535475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::SplitRes_SELECT_CC(SDNode *N, SDValue &Lo, 536475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 537475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LL, LH, RL, RH; 538ac6d9bec671252dd1e596fa71180ff6b39d06b5dAndrew Trick SDLoc dl(N); 53978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetSplitOp(N->getOperand(2), LL, LH); 54078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands GetSplitOp(N->getOperand(3), RL, RH); 54178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 54235ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Lo = DAG.getNode(ISD::SELECT_CC, dl, LL.getValueType(), N->getOperand(0), 54378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands N->getOperand(1), LL, RL, N->getOperand(4)); 54435ba3d463834f83e2bf8e8ad631ffc4d73a0203cDale Johannesen Hi = DAG.getNode(ISD::SELECT_CC, dl, LH.getValueType(), N->getOperand(0), 54578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands N->getOperand(1), LH, RH, N->getOperand(4)); 54678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 54778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 548475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::SplitRes_UNDEF(SDNode *N, SDValue &Lo, SDValue &Hi) { 549e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT LoVT, HiVT; 55036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines std::tie(LoVT, HiVT) = DAG.GetSplitDestVTs(N->getValueType(0)); 551e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen Lo = DAG.getUNDEF(LoVT); 552e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen Hi = DAG.getUNDEF(HiVT); 55378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands} 554