Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 1 | //===-- MipsISelLowering.cpp - Mips DAG Lowering Implementation -----------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Chris Lattner | 4ee451d | 2007-12-29 20:36:04 +0000 | [diff] [blame] | 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 7 | // |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 8 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 9 | // |
| 10 | // This file defines the interfaces that Mips uses to lower LLVM code into a |
| 11 | // selection DAG. |
| 12 | // |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 13 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 14 | |
| 15 | #define DEBUG_TYPE "mips-lower" |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 16 | #include "MipsISelLowering.h" |
Bruno Cardoso Lopes | a2b1bb5 | 2007-08-28 05:08:16 +0000 | [diff] [blame] | 17 | #include "MipsMachineFunction.h" |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 18 | #include "MipsTargetMachine.h" |
Chris Lattner | b71b909 | 2009-08-13 06:28:06 +0000 | [diff] [blame] | 19 | #include "MipsTargetObjectFile.h" |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 20 | #include "MipsSubtarget.h" |
Craig Topper | 79aa341 | 2012-03-17 18:46:09 +0000 | [diff] [blame] | 21 | #include "InstPrinter/MipsInstPrinter.h" |
| 22 | #include "MCTargetDesc/MipsBaseInfo.h" |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 23 | #include "llvm/DerivedTypes.h" |
| 24 | #include "llvm/Function.h" |
Bruno Cardoso Lopes | 91fd532 | 2008-07-21 18:52:34 +0000 | [diff] [blame] | 25 | #include "llvm/GlobalVariable.h" |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 26 | #include "llvm/Intrinsics.h" |
| 27 | #include "llvm/CallingConv.h" |
Akira Hatanaka | 2b861be | 2012-10-19 21:47:33 +0000 | [diff] [blame^] | 28 | #include "llvm/ADT/Statistic.h" |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 29 | #include "llvm/CodeGen/CallingConvLower.h" |
| 30 | #include "llvm/CodeGen/MachineFrameInfo.h" |
| 31 | #include "llvm/CodeGen/MachineFunction.h" |
| 32 | #include "llvm/CodeGen/MachineInstrBuilder.h" |
Chris Lattner | 84bc542 | 2007-12-31 04:13:23 +0000 | [diff] [blame] | 33 | #include "llvm/CodeGen/MachineRegisterInfo.h" |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 34 | #include "llvm/CodeGen/SelectionDAGISel.h" |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 35 | #include "llvm/CodeGen/ValueTypes.h" |
Akira Hatanaka | 2b861be | 2012-10-19 21:47:33 +0000 | [diff] [blame^] | 36 | #include "llvm/Support/CommandLine.h" |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 37 | #include "llvm/Support/Debug.h" |
Torok Edwin | c25e758 | 2009-07-11 20:10:48 +0000 | [diff] [blame] | 38 | #include "llvm/Support/ErrorHandling.h" |
NAKAMURA Takumi | 8959393 | 2012-04-21 15:31:45 +0000 | [diff] [blame] | 39 | #include "llvm/Support/raw_ostream.h" |
| 40 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 41 | using namespace llvm; |
| 42 | |
Akira Hatanaka | 2b861be | 2012-10-19 21:47:33 +0000 | [diff] [blame^] | 43 | STATISTIC(NumTailCalls, "Number of tail calls"); |
| 44 | |
| 45 | static cl::opt<bool> |
| 46 | EnableMipsTailCalls("enable-mips-tail-calls", cl::Hidden, |
| 47 | cl::desc("MIPS: Enable tail calls."), cl::init(false)); |
| 48 | |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 49 | // If I is a shifted mask, set the size (Size) and the first bit of the |
Akira Hatanaka | dbe9a31 | 2011-08-18 20:07:42 +0000 | [diff] [blame] | 50 | // mask (Pos), and return true. |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 51 | // For example, if I is 0x003ff800, (Pos, Size) = (11, 11). |
Akira Hatanaka | 854a7db | 2011-08-19 22:59:00 +0000 | [diff] [blame] | 52 | static bool IsShiftedMask(uint64_t I, uint64_t &Pos, uint64_t &Size) { |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 53 | if (!isShiftedMask_64(I)) |
Akira Hatanaka | 854a7db | 2011-08-19 22:59:00 +0000 | [diff] [blame] | 54 | return false; |
Akira Hatanaka | bb15e11 | 2011-08-17 02:05:42 +0000 | [diff] [blame] | 55 | |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 56 | Size = CountPopulation_64(I); |
| 57 | Pos = CountTrailingZeros_64(I); |
Akira Hatanaka | dbe9a31 | 2011-08-18 20:07:42 +0000 | [diff] [blame] | 58 | return true; |
Akira Hatanaka | bb15e11 | 2011-08-17 02:05:42 +0000 | [diff] [blame] | 59 | } |
| 60 | |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 61 | static SDValue GetGlobalReg(SelectionDAG &DAG, EVT Ty) { |
| 62 | MipsFunctionInfo *FI = DAG.getMachineFunction().getInfo<MipsFunctionInfo>(); |
| 63 | return DAG.getRegister(FI->getGlobalBaseReg(), Ty); |
| 64 | } |
| 65 | |
Chris Lattner | f014412 | 2009-07-28 03:13:23 +0000 | [diff] [blame] | 66 | const char *MipsTargetLowering::getTargetNodeName(unsigned Opcode) const { |
| 67 | switch (Opcode) { |
Akira Hatanaka | bdd2ce9 | 2011-05-23 21:13:59 +0000 | [diff] [blame] | 68 | case MipsISD::JmpLink: return "MipsISD::JmpLink"; |
Akira Hatanaka | 58d1e3f | 2012-10-19 20:59:39 +0000 | [diff] [blame] | 69 | case MipsISD::TailCall: return "MipsISD::TailCall"; |
Akira Hatanaka | bdd2ce9 | 2011-05-23 21:13:59 +0000 | [diff] [blame] | 70 | case MipsISD::Hi: return "MipsISD::Hi"; |
| 71 | case MipsISD::Lo: return "MipsISD::Lo"; |
| 72 | case MipsISD::GPRel: return "MipsISD::GPRel"; |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 73 | case MipsISD::ThreadPointer: return "MipsISD::ThreadPointer"; |
Akira Hatanaka | bdd2ce9 | 2011-05-23 21:13:59 +0000 | [diff] [blame] | 74 | case MipsISD::Ret: return "MipsISD::Ret"; |
| 75 | case MipsISD::FPBrcond: return "MipsISD::FPBrcond"; |
| 76 | case MipsISD::FPCmp: return "MipsISD::FPCmp"; |
| 77 | case MipsISD::CMovFP_T: return "MipsISD::CMovFP_T"; |
| 78 | case MipsISD::CMovFP_F: return "MipsISD::CMovFP_F"; |
| 79 | case MipsISD::FPRound: return "MipsISD::FPRound"; |
| 80 | case MipsISD::MAdd: return "MipsISD::MAdd"; |
| 81 | case MipsISD::MAddu: return "MipsISD::MAddu"; |
| 82 | case MipsISD::MSub: return "MipsISD::MSub"; |
| 83 | case MipsISD::MSubu: return "MipsISD::MSubu"; |
| 84 | case MipsISD::DivRem: return "MipsISD::DivRem"; |
| 85 | case MipsISD::DivRemU: return "MipsISD::DivRemU"; |
| 86 | case MipsISD::BuildPairF64: return "MipsISD::BuildPairF64"; |
| 87 | case MipsISD::ExtractElementF64: return "MipsISD::ExtractElementF64"; |
Akira Hatanaka | bfcb83f | 2011-12-12 22:38:19 +0000 | [diff] [blame] | 88 | case MipsISD::Wrapper: return "MipsISD::Wrapper"; |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 89 | case MipsISD::DynAlloc: return "MipsISD::DynAlloc"; |
Akira Hatanaka | db54826 | 2011-07-19 23:30:50 +0000 | [diff] [blame] | 90 | case MipsISD::Sync: return "MipsISD::Sync"; |
Akira Hatanaka | bb15e11 | 2011-08-17 02:05:42 +0000 | [diff] [blame] | 91 | case MipsISD::Ext: return "MipsISD::Ext"; |
| 92 | case MipsISD::Ins: return "MipsISD::Ins"; |
Akira Hatanaka | b6f1dc2 | 2012-06-02 00:03:12 +0000 | [diff] [blame] | 93 | case MipsISD::LWL: return "MipsISD::LWL"; |
| 94 | case MipsISD::LWR: return "MipsISD::LWR"; |
| 95 | case MipsISD::SWL: return "MipsISD::SWL"; |
| 96 | case MipsISD::SWR: return "MipsISD::SWR"; |
| 97 | case MipsISD::LDL: return "MipsISD::LDL"; |
| 98 | case MipsISD::LDR: return "MipsISD::LDR"; |
| 99 | case MipsISD::SDL: return "MipsISD::SDL"; |
| 100 | case MipsISD::SDR: return "MipsISD::SDR"; |
Akira Hatanaka | 6fad5e7 | 2012-09-21 23:52:47 +0000 | [diff] [blame] | 101 | case MipsISD::EXTP: return "MipsISD::EXTP"; |
| 102 | case MipsISD::EXTPDP: return "MipsISD::EXTPDP"; |
| 103 | case MipsISD::EXTR_S_H: return "MipsISD::EXTR_S_H"; |
| 104 | case MipsISD::EXTR_W: return "MipsISD::EXTR_W"; |
| 105 | case MipsISD::EXTR_R_W: return "MipsISD::EXTR_R_W"; |
| 106 | case MipsISD::EXTR_RS_W: return "MipsISD::EXTR_RS_W"; |
| 107 | case MipsISD::SHILO: return "MipsISD::SHILO"; |
| 108 | case MipsISD::MTHLIP: return "MipsISD::MTHLIP"; |
| 109 | case MipsISD::MULT: return "MipsISD::MULT"; |
| 110 | case MipsISD::MULTU: return "MipsISD::MULTU"; |
| 111 | case MipsISD::MADD_DSP: return "MipsISD::MADD_DSPDSP"; |
| 112 | case MipsISD::MADDU_DSP: return "MipsISD::MADDU_DSP"; |
| 113 | case MipsISD::MSUB_DSP: return "MipsISD::MSUB_DSP"; |
| 114 | case MipsISD::MSUBU_DSP: return "MipsISD::MSUBU_DSP"; |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 115 | default: return NULL; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 116 | } |
| 117 | } |
| 118 | |
| 119 | MipsTargetLowering:: |
Chris Lattner | f014412 | 2009-07-28 03:13:23 +0000 | [diff] [blame] | 120 | MipsTargetLowering(MipsTargetMachine &TM) |
Akira Hatanaka | 8b4198d | 2011-09-26 21:47:02 +0000 | [diff] [blame] | 121 | : TargetLowering(TM, new MipsTargetObjectFile()), |
| 122 | Subtarget(&TM.getSubtarget<MipsSubtarget>()), |
Akira Hatanaka | 2ec69fa | 2011-10-28 18:47:24 +0000 | [diff] [blame] | 123 | HasMips64(Subtarget->hasMips64()), IsN64(Subtarget->isABI_N64()), |
| 124 | IsO32(Subtarget->isABI_O32()) { |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 125 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 126 | // Mips does not have i1 type, so use i32 for |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 127 | // setcc operations results (slt, sgt, ...). |
Duncan Sands | 0322808 | 2008-11-23 15:47:28 +0000 | [diff] [blame] | 128 | setBooleanContents(ZeroOrOneBooleanContent); |
Duncan Sands | 28b77e9 | 2011-09-06 19:07:46 +0000 | [diff] [blame] | 129 | setBooleanVectorContents(ZeroOrOneBooleanContent); // FIXME: Is this correct? |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 130 | |
| 131 | // Set up the register classes |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 132 | addRegisterClass(MVT::i32, &Mips::CPURegsRegClass); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 133 | |
Akira Hatanaka | 9593484 | 2011-09-24 01:34:44 +0000 | [diff] [blame] | 134 | if (HasMips64) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 135 | addRegisterClass(MVT::i64, &Mips::CPU64RegsRegClass); |
Akira Hatanaka | 9593484 | 2011-09-24 01:34:44 +0000 | [diff] [blame] | 136 | |
Akira Hatanaka | 28ee4fd | 2012-05-31 02:59:44 +0000 | [diff] [blame] | 137 | if (Subtarget->inMips16Mode()) { |
| 138 | addRegisterClass(MVT::i32, &Mips::CPU16RegsRegClass); |
Akira Hatanaka | 28ee4fd | 2012-05-31 02:59:44 +0000 | [diff] [blame] | 139 | } |
| 140 | |
Akira Hatanaka | b430cec | 2012-09-21 23:58:31 +0000 | [diff] [blame] | 141 | if (Subtarget->hasDSP()) { |
| 142 | MVT::SimpleValueType VecTys[2] = {MVT::v2i16, MVT::v4i8}; |
| 143 | |
| 144 | for (unsigned i = 0; i < array_lengthof(VecTys); ++i) { |
| 145 | addRegisterClass(VecTys[i], &Mips::DSPRegsRegClass); |
| 146 | |
| 147 | // Expand all builtin opcodes. |
| 148 | for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc) |
| 149 | setOperationAction(Opc, VecTys[i], Expand); |
| 150 | |
| 151 | setOperationAction(ISD::LOAD, VecTys[i], Legal); |
| 152 | setOperationAction(ISD::STORE, VecTys[i], Legal); |
| 153 | setOperationAction(ISD::BITCAST, VecTys[i], Legal); |
| 154 | } |
| 155 | } |
| 156 | |
Akira Hatanaka | b0e7af7 | 2012-01-04 19:29:11 +0000 | [diff] [blame] | 157 | if (!TM.Options.UseSoftFloat) { |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 158 | addRegisterClass(MVT::f32, &Mips::FGR32RegClass); |
Akira Hatanaka | b0e7af7 | 2012-01-04 19:29:11 +0000 | [diff] [blame] | 159 | |
| 160 | // When dealing with single precision only, use libcalls |
| 161 | if (!Subtarget->isSingleFloat()) { |
| 162 | if (HasMips64) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 163 | addRegisterClass(MVT::f64, &Mips::FGR64RegClass); |
Akira Hatanaka | b0e7af7 | 2012-01-04 19:29:11 +0000 | [diff] [blame] | 164 | else |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 165 | addRegisterClass(MVT::f64, &Mips::AFGR64RegClass); |
Akira Hatanaka | b0e7af7 | 2012-01-04 19:29:11 +0000 | [diff] [blame] | 166 | } |
Akira Hatanaka | 792016b | 2011-09-23 18:28:39 +0000 | [diff] [blame] | 167 | } |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 168 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 169 | // Load extented operations for i1 types must be promoted |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 170 | setLoadExtAction(ISD::EXTLOAD, MVT::i1, Promote); |
| 171 | setLoadExtAction(ISD::ZEXTLOAD, MVT::i1, Promote); |
| 172 | setLoadExtAction(ISD::SEXTLOAD, MVT::i1, Promote); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 173 | |
Eli Friedman | 6055a6a | 2009-07-17 04:07:24 +0000 | [diff] [blame] | 174 | // MIPS doesn't have extending float->double load/store |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 175 | setLoadExtAction(ISD::EXTLOAD, MVT::f32, Expand); |
| 176 | setTruncStoreAction(MVT::f64, MVT::f32, Expand); |
Eli Friedman | 10a3659 | 2009-07-17 02:28:12 +0000 | [diff] [blame] | 177 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 178 | // Used by legalize types to correctly generate the setcc result. |
| 179 | // Without this, every float setcc comes with a AND/OR with the result, |
| 180 | // we don't want this, since the fpcmp result goes to a flag register, |
Bruno Cardoso Lopes | 7728377 | 2008-07-31 18:31:28 +0000 | [diff] [blame] | 181 | // which is used implicitly by brcond and select operations. |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 182 | AddPromotedToType(ISD::SETCC, MVT::i1, MVT::i32); |
Bruno Cardoso Lopes | 7728377 | 2008-07-31 18:31:28 +0000 | [diff] [blame] | 183 | |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 184 | // Mips Custom Operations |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 185 | setOperationAction(ISD::GlobalAddress, MVT::i32, Custom); |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 186 | setOperationAction(ISD::BlockAddress, MVT::i32, Custom); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 187 | setOperationAction(ISD::GlobalTLSAddress, MVT::i32, Custom); |
| 188 | setOperationAction(ISD::JumpTable, MVT::i32, Custom); |
| 189 | setOperationAction(ISD::ConstantPool, MVT::i32, Custom); |
| 190 | setOperationAction(ISD::SELECT, MVT::f32, Custom); |
| 191 | setOperationAction(ISD::SELECT, MVT::f64, Custom); |
| 192 | setOperationAction(ISD::SELECT, MVT::i32, Custom); |
Akira Hatanaka | 3fef29d | 2012-07-11 19:32:27 +0000 | [diff] [blame] | 193 | setOperationAction(ISD::SELECT_CC, MVT::f32, Custom); |
| 194 | setOperationAction(ISD::SELECT_CC, MVT::f64, Custom); |
Akira Hatanaka | 0a40c23 | 2012-03-09 23:46:03 +0000 | [diff] [blame] | 195 | setOperationAction(ISD::SETCC, MVT::f32, Custom); |
| 196 | setOperationAction(ISD::SETCC, MVT::f64, Custom); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 197 | setOperationAction(ISD::BRCOND, MVT::Other, Custom); |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 198 | setOperationAction(ISD::VASTART, MVT::Other, Custom); |
Akira Hatanaka | d229b7b | 2012-03-10 00:03:50 +0000 | [diff] [blame] | 199 | setOperationAction(ISD::FCOPYSIGN, MVT::f32, Custom); |
| 200 | setOperationAction(ISD::FCOPYSIGN, MVT::f64, Custom); |
| 201 | setOperationAction(ISD::MEMBARRIER, MVT::Other, Custom); |
| 202 | setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Custom); |
Akira Hatanaka | f934d15 | 2012-09-15 01:02:03 +0000 | [diff] [blame] | 203 | if (!Subtarget->inMips16Mode()) { |
| 204 | setOperationAction(ISD::LOAD, MVT::i32, Custom); |
| 205 | setOperationAction(ISD::STORE, MVT::i32, Custom); |
| 206 | } |
Akira Hatanaka | d229b7b | 2012-03-10 00:03:50 +0000 | [diff] [blame] | 207 | |
Akira Hatanaka | c12a6e6 | 2012-04-11 22:49:04 +0000 | [diff] [blame] | 208 | if (!TM.Options.NoNaNsFPMath) { |
| 209 | setOperationAction(ISD::FABS, MVT::f32, Custom); |
| 210 | setOperationAction(ISD::FABS, MVT::f64, Custom); |
| 211 | } |
| 212 | |
Akira Hatanaka | d229b7b | 2012-03-10 00:03:50 +0000 | [diff] [blame] | 213 | if (HasMips64) { |
| 214 | setOperationAction(ISD::GlobalAddress, MVT::i64, Custom); |
| 215 | setOperationAction(ISD::BlockAddress, MVT::i64, Custom); |
| 216 | setOperationAction(ISD::GlobalTLSAddress, MVT::i64, Custom); |
| 217 | setOperationAction(ISD::JumpTable, MVT::i64, Custom); |
| 218 | setOperationAction(ISD::ConstantPool, MVT::i64, Custom); |
| 219 | setOperationAction(ISD::SELECT, MVT::i64, Custom); |
Akira Hatanaka | 7664f05 | 2012-06-02 00:04:42 +0000 | [diff] [blame] | 220 | setOperationAction(ISD::LOAD, MVT::i64, Custom); |
| 221 | setOperationAction(ISD::STORE, MVT::i64, Custom); |
Akira Hatanaka | d229b7b | 2012-03-10 00:03:50 +0000 | [diff] [blame] | 222 | } |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 223 | |
Akira Hatanaka | a284acb | 2012-05-09 00:55:21 +0000 | [diff] [blame] | 224 | if (!HasMips64) { |
| 225 | setOperationAction(ISD::SHL_PARTS, MVT::i32, Custom); |
| 226 | setOperationAction(ISD::SRA_PARTS, MVT::i32, Custom); |
| 227 | setOperationAction(ISD::SRL_PARTS, MVT::i32, Custom); |
| 228 | } |
| 229 | |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 230 | setOperationAction(ISD::SDIV, MVT::i32, Expand); |
| 231 | setOperationAction(ISD::SREM, MVT::i32, Expand); |
| 232 | setOperationAction(ISD::UDIV, MVT::i32, Expand); |
| 233 | setOperationAction(ISD::UREM, MVT::i32, Expand); |
Akira Hatanaka | dda4a07 | 2011-10-03 21:06:13 +0000 | [diff] [blame] | 234 | setOperationAction(ISD::SDIV, MVT::i64, Expand); |
| 235 | setOperationAction(ISD::SREM, MVT::i64, Expand); |
| 236 | setOperationAction(ISD::UDIV, MVT::i64, Expand); |
| 237 | setOperationAction(ISD::UREM, MVT::i64, Expand); |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 238 | |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 239 | // Operations not directly supported by Mips. |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 240 | setOperationAction(ISD::BR_JT, MVT::Other, Expand); |
| 241 | setOperationAction(ISD::BR_CC, MVT::Other, Expand); |
| 242 | setOperationAction(ISD::SELECT_CC, MVT::Other, Expand); |
| 243 | setOperationAction(ISD::UINT_TO_FP, MVT::i32, Expand); |
Akira Hatanaka | e1bcd6b | 2011-12-20 23:40:56 +0000 | [diff] [blame] | 244 | setOperationAction(ISD::UINT_TO_FP, MVT::i64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 245 | setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand); |
Akira Hatanaka | e1bcd6b | 2011-12-20 23:40:56 +0000 | [diff] [blame] | 246 | setOperationAction(ISD::FP_TO_UINT, MVT::i64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 247 | setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1, Expand); |
| 248 | setOperationAction(ISD::CTPOP, MVT::i32, Expand); |
Akira Hatanaka | 7f16274 | 2011-12-21 00:14:05 +0000 | [diff] [blame] | 249 | setOperationAction(ISD::CTPOP, MVT::i64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 250 | setOperationAction(ISD::CTTZ, MVT::i32, Expand); |
Akira Hatanaka | 7f16274 | 2011-12-21 00:14:05 +0000 | [diff] [blame] | 251 | setOperationAction(ISD::CTTZ, MVT::i64, Expand); |
Chandler Carruth | 63974b2 | 2011-12-13 01:56:10 +0000 | [diff] [blame] | 252 | setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i32, Expand); |
| 253 | setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i64, Expand); |
| 254 | setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i32, Expand); |
| 255 | setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 256 | setOperationAction(ISD::ROTL, MVT::i32, Expand); |
Akira Hatanaka | c7bafe9 | 2011-09-30 18:51:46 +0000 | [diff] [blame] | 257 | setOperationAction(ISD::ROTL, MVT::i64, Expand); |
Akira Hatanaka | 1d165f1 | 2012-07-31 20:54:48 +0000 | [diff] [blame] | 258 | setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32, Expand); |
| 259 | setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i64, Expand); |
Bruno Cardoso Lopes | 908b6dd | 2010-12-09 17:32:30 +0000 | [diff] [blame] | 260 | |
Akira Hatanaka | 5663344 | 2011-09-20 23:53:09 +0000 | [diff] [blame] | 261 | if (!Subtarget->hasMips32r2()) |
Bruno Cardoso Lopes | 908b6dd | 2010-12-09 17:32:30 +0000 | [diff] [blame] | 262 | setOperationAction(ISD::ROTR, MVT::i32, Expand); |
| 263 | |
Akira Hatanaka | c7bafe9 | 2011-09-30 18:51:46 +0000 | [diff] [blame] | 264 | if (!Subtarget->hasMips64r2()) |
| 265 | setOperationAction(ISD::ROTR, MVT::i64, Expand); |
| 266 | |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 267 | setOperationAction(ISD::FSIN, MVT::f32, Expand); |
Bruno Cardoso Lopes | 5d6fb5d | 2011-03-04 18:54:14 +0000 | [diff] [blame] | 268 | setOperationAction(ISD::FSIN, MVT::f64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 269 | setOperationAction(ISD::FCOS, MVT::f32, Expand); |
Bruno Cardoso Lopes | 5d6fb5d | 2011-03-04 18:54:14 +0000 | [diff] [blame] | 270 | setOperationAction(ISD::FCOS, MVT::f64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 271 | setOperationAction(ISD::FPOWI, MVT::f32, Expand); |
| 272 | setOperationAction(ISD::FPOW, MVT::f32, Expand); |
Akira Hatanaka | 46da136 | 2011-05-23 22:23:58 +0000 | [diff] [blame] | 273 | setOperationAction(ISD::FPOW, MVT::f64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 274 | setOperationAction(ISD::FLOG, MVT::f32, Expand); |
| 275 | setOperationAction(ISD::FLOG2, MVT::f32, Expand); |
| 276 | setOperationAction(ISD::FLOG10, MVT::f32, Expand); |
| 277 | setOperationAction(ISD::FEXP, MVT::f32, Expand); |
Cameron Zwarich | 3339084 | 2011-07-08 21:39:21 +0000 | [diff] [blame] | 278 | setOperationAction(ISD::FMA, MVT::f32, Expand); |
| 279 | setOperationAction(ISD::FMA, MVT::f64, Expand); |
Akira Hatanaka | 21ecc2f | 2012-03-29 18:43:11 +0000 | [diff] [blame] | 280 | setOperationAction(ISD::FREM, MVT::f32, Expand); |
| 281 | setOperationAction(ISD::FREM, MVT::f64, Expand); |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 282 | |
Akira Hatanaka | 1cc6333 | 2012-04-11 22:59:08 +0000 | [diff] [blame] | 283 | if (!TM.Options.NoNaNsFPMath) { |
| 284 | setOperationAction(ISD::FNEG, MVT::f32, Expand); |
| 285 | setOperationAction(ISD::FNEG, MVT::f64, Expand); |
| 286 | } |
| 287 | |
Akira Hatanaka | cf0cd80 | 2011-05-26 18:59:03 +0000 | [diff] [blame] | 288 | setOperationAction(ISD::EXCEPTIONADDR, MVT::i32, Expand); |
Akira Hatanaka | 590baca | 2012-02-02 03:13:40 +0000 | [diff] [blame] | 289 | setOperationAction(ISD::EXCEPTIONADDR, MVT::i64, Expand); |
Akira Hatanaka | cf0cd80 | 2011-05-26 18:59:03 +0000 | [diff] [blame] | 290 | setOperationAction(ISD::EHSELECTION, MVT::i32, Expand); |
Akira Hatanaka | 590baca | 2012-02-02 03:13:40 +0000 | [diff] [blame] | 291 | setOperationAction(ISD::EHSELECTION, MVT::i64, Expand); |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 292 | |
Bruno Cardoso Lopes | 954dac0 | 2011-03-09 19:22:22 +0000 | [diff] [blame] | 293 | setOperationAction(ISD::VAARG, MVT::Other, Expand); |
| 294 | setOperationAction(ISD::VACOPY, MVT::Other, Expand); |
| 295 | setOperationAction(ISD::VAEND, MVT::Other, Expand); |
| 296 | |
Akira Hatanaka | b430cec | 2012-09-21 23:58:31 +0000 | [diff] [blame] | 297 | setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::i64, Custom); |
| 298 | setOperationAction(ISD::INTRINSIC_W_CHAIN, MVT::i64, Custom); |
| 299 | |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 300 | // Use the default for now |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 301 | setOperationAction(ISD::STACKSAVE, MVT::Other, Expand); |
| 302 | setOperationAction(ISD::STACKRESTORE, MVT::Other, Expand); |
Eli Friedman | 1464846 | 2011-07-27 22:21:52 +0000 | [diff] [blame] | 303 | |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 304 | setOperationAction(ISD::ATOMIC_LOAD, MVT::i32, Expand); |
| 305 | setOperationAction(ISD::ATOMIC_LOAD, MVT::i64, Expand); |
| 306 | setOperationAction(ISD::ATOMIC_STORE, MVT::i32, Expand); |
| 307 | setOperationAction(ISD::ATOMIC_STORE, MVT::i64, Expand); |
Eli Friedman | 4db5aca | 2011-08-29 18:23:02 +0000 | [diff] [blame] | 308 | |
Eli Friedman | 26689ac | 2011-08-03 21:06:02 +0000 | [diff] [blame] | 309 | setInsertFencesForAtomic(true); |
| 310 | |
Bruno Cardoso Lopes | 7728f7e | 2008-07-09 05:32:22 +0000 | [diff] [blame] | 311 | if (!Subtarget->hasSEInReg()) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 312 | setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i8, Expand); |
| 313 | setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i16, Expand); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 314 | } |
| 315 | |
Akira Hatanaka | c79507a | 2011-12-21 00:20:27 +0000 | [diff] [blame] | 316 | if (!Subtarget->hasBitCount()) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 317 | setOperationAction(ISD::CTLZ, MVT::i32, Expand); |
Akira Hatanaka | c79507a | 2011-12-21 00:20:27 +0000 | [diff] [blame] | 318 | setOperationAction(ISD::CTLZ, MVT::i64, Expand); |
| 319 | } |
Bruno Cardoso Lopes | 65ad452 | 2008-08-08 06:16:31 +0000 | [diff] [blame] | 320 | |
Akira Hatanaka | c0ea043 | 2011-12-20 23:56:43 +0000 | [diff] [blame] | 321 | if (!Subtarget->hasSwap()) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 322 | setOperationAction(ISD::BSWAP, MVT::i32, Expand); |
Akira Hatanaka | c0ea043 | 2011-12-20 23:56:43 +0000 | [diff] [blame] | 323 | setOperationAction(ISD::BSWAP, MVT::i64, Expand); |
| 324 | } |
Bruno Cardoso Lopes | 739e441 | 2008-08-13 07:13:40 +0000 | [diff] [blame] | 325 | |
Akira Hatanaka | 7664f05 | 2012-06-02 00:04:42 +0000 | [diff] [blame] | 326 | if (HasMips64) { |
| 327 | setLoadExtAction(ISD::SEXTLOAD, MVT::i32, Custom); |
| 328 | setLoadExtAction(ISD::ZEXTLOAD, MVT::i32, Custom); |
| 329 | setLoadExtAction(ISD::EXTLOAD, MVT::i32, Custom); |
| 330 | setTruncStoreAction(MVT::i64, MVT::i32, Custom); |
| 331 | } |
| 332 | |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 333 | setTargetDAGCombine(ISD::ADDE); |
| 334 | setTargetDAGCombine(ISD::SUBE); |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 335 | setTargetDAGCombine(ISD::SDIVREM); |
| 336 | setTargetDAGCombine(ISD::UDIVREM); |
Akira Hatanaka | ee8c3b0 | 2012-03-08 03:26:37 +0000 | [diff] [blame] | 337 | setTargetDAGCombine(ISD::SELECT); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 338 | setTargetDAGCombine(ISD::AND); |
| 339 | setTargetDAGCombine(ISD::OR); |
Akira Hatanaka | 8782707 | 2012-06-13 20:33:18 +0000 | [diff] [blame] | 340 | setTargetDAGCombine(ISD::ADD); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 341 | |
Akira Hatanaka | 5fdf500 | 2012-03-08 01:59:33 +0000 | [diff] [blame] | 342 | setMinFunctionAlignment(HasMips64 ? 3 : 2); |
Eli Friedman | fc5d305 | 2011-05-06 20:34:06 +0000 | [diff] [blame] | 343 | |
Akira Hatanaka | 3f5b107 | 2012-02-02 03:17:04 +0000 | [diff] [blame] | 344 | setStackPointerRegisterToSaveRestore(IsN64 ? Mips::SP_64 : Mips::SP); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 345 | computeRegisterProperties(); |
Akira Hatanaka | cf0cd80 | 2011-05-26 18:59:03 +0000 | [diff] [blame] | 346 | |
Akira Hatanaka | 590baca | 2012-02-02 03:13:40 +0000 | [diff] [blame] | 347 | setExceptionPointerRegister(IsN64 ? Mips::A0_64 : Mips::A0); |
| 348 | setExceptionSelectorRegister(IsN64 ? Mips::A1_64 : Mips::A1); |
Akira Hatanaka | e193b32 | 2012-06-13 19:33:32 +0000 | [diff] [blame] | 349 | |
| 350 | maxStoresPerMemcpy = 16; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 351 | } |
| 352 | |
Akira Hatanaka | 5c21c9e | 2011-08-12 21:30:06 +0000 | [diff] [blame] | 353 | bool MipsTargetLowering::allowsUnalignedMemoryAccesses(EVT VT) const { |
Akira Hatanaka | 511961a | 2011-08-17 18:49:18 +0000 | [diff] [blame] | 354 | MVT::SimpleValueType SVT = VT.getSimpleVT().SimpleTy; |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 355 | |
Akira Hatanaka | f934d15 | 2012-09-15 01:02:03 +0000 | [diff] [blame] | 356 | if (Subtarget->inMips16Mode()) |
| 357 | return false; |
| 358 | |
Akira Hatanaka | 44b6c71 | 2012-02-28 02:55:02 +0000 | [diff] [blame] | 359 | switch (SVT) { |
| 360 | case MVT::i64: |
| 361 | case MVT::i32: |
Akira Hatanaka | 44b6c71 | 2012-02-28 02:55:02 +0000 | [diff] [blame] | 362 | return true; |
Akira Hatanaka | 44b6c71 | 2012-02-28 02:55:02 +0000 | [diff] [blame] | 363 | default: |
| 364 | return false; |
| 365 | } |
Akira Hatanaka | 5c21c9e | 2011-08-12 21:30:06 +0000 | [diff] [blame] | 366 | } |
| 367 | |
Duncan Sands | 28b77e9 | 2011-09-06 19:07:46 +0000 | [diff] [blame] | 368 | EVT MipsTargetLowering::getSetCCResultType(EVT VT) const { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 369 | return MVT::i32; |
Scott Michel | 5b8f82e | 2008-03-10 15:42:14 +0000 | [diff] [blame] | 370 | } |
| 371 | |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 372 | // SelectMadd - |
| 373 | // Transforms a subgraph in CurDAG if the following pattern is found: |
| 374 | // (addc multLo, Lo0), (adde multHi, Hi0), |
| 375 | // where, |
| 376 | // multHi/Lo: product of multiplication |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 377 | // Lo0: initial value of Lo register |
| 378 | // Hi0: initial value of Hi register |
Akira Hatanaka | 81bd78b | 2011-03-30 21:15:35 +0000 | [diff] [blame] | 379 | // Return true if pattern matching was successful. |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 380 | static bool SelectMadd(SDNode *ADDENode, SelectionDAG *CurDAG) { |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 381 | // ADDENode's second operand must be a flag output of an ADDC node in order |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 382 | // for the matching to be successful. |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 383 | SDNode *ADDCNode = ADDENode->getOperand(2).getNode(); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 384 | |
| 385 | if (ADDCNode->getOpcode() != ISD::ADDC) |
| 386 | return false; |
| 387 | |
| 388 | SDValue MultHi = ADDENode->getOperand(0); |
| 389 | SDValue MultLo = ADDCNode->getOperand(0); |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 390 | SDNode *MultNode = MultHi.getNode(); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 391 | unsigned MultOpc = MultHi.getOpcode(); |
| 392 | |
| 393 | // MultHi and MultLo must be generated by the same node, |
| 394 | if (MultLo.getNode() != MultNode) |
| 395 | return false; |
| 396 | |
| 397 | // and it must be a multiplication. |
| 398 | if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI) |
| 399 | return false; |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 400 | |
| 401 | // MultLo amd MultHi must be the first and second output of MultNode |
| 402 | // respectively. |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 403 | if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0) |
| 404 | return false; |
| 405 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 406 | // Transform this to a MADD only if ADDENode and ADDCNode are the only users |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 407 | // of the values of MultNode, in which case MultNode will be removed in later |
| 408 | // phases. |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 409 | // If there exist users other than ADDENode or ADDCNode, this function returns |
| 410 | // here, which will result in MultNode being mapped to a single MULT |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 411 | // instruction node rather than a pair of MULT and MADD instructions being |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 412 | // produced. |
| 413 | if (!MultHi.hasOneUse() || !MultLo.hasOneUse()) |
| 414 | return false; |
| 415 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 416 | SDValue Chain = CurDAG->getEntryNode(); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 417 | DebugLoc dl = ADDENode->getDebugLoc(); |
| 418 | |
| 419 | // create MipsMAdd(u) node |
| 420 | MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MAddu : MipsISD::MAdd; |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 421 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 422 | SDValue MAdd = CurDAG->getNode(MultOpc, dl, MVT::Glue, |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 423 | MultNode->getOperand(0),// Factor 0 |
| 424 | MultNode->getOperand(1),// Factor 1 |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 425 | ADDCNode->getOperand(1),// Lo0 |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 426 | ADDENode->getOperand(1));// Hi0 |
| 427 | |
| 428 | // create CopyFromReg nodes |
| 429 | SDValue CopyFromLo = CurDAG->getCopyFromReg(Chain, dl, Mips::LO, MVT::i32, |
| 430 | MAdd); |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 431 | SDValue CopyFromHi = CurDAG->getCopyFromReg(CopyFromLo.getValue(1), dl, |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 432 | Mips::HI, MVT::i32, |
| 433 | CopyFromLo.getValue(2)); |
| 434 | |
| 435 | // replace uses of adde and addc here |
| 436 | if (!SDValue(ADDCNode, 0).use_empty()) |
| 437 | CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDCNode, 0), CopyFromLo); |
| 438 | |
| 439 | if (!SDValue(ADDENode, 0).use_empty()) |
| 440 | CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDENode, 0), CopyFromHi); |
| 441 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 442 | return true; |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 443 | } |
| 444 | |
| 445 | // SelectMsub - |
| 446 | // Transforms a subgraph in CurDAG if the following pattern is found: |
| 447 | // (addc Lo0, multLo), (sube Hi0, multHi), |
| 448 | // where, |
| 449 | // multHi/Lo: product of multiplication |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 450 | // Lo0: initial value of Lo register |
| 451 | // Hi0: initial value of Hi register |
Akira Hatanaka | 81bd78b | 2011-03-30 21:15:35 +0000 | [diff] [blame] | 452 | // Return true if pattern matching was successful. |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 453 | static bool SelectMsub(SDNode *SUBENode, SelectionDAG *CurDAG) { |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 454 | // SUBENode's second operand must be a flag output of an SUBC node in order |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 455 | // for the matching to be successful. |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 456 | SDNode *SUBCNode = SUBENode->getOperand(2).getNode(); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 457 | |
| 458 | if (SUBCNode->getOpcode() != ISD::SUBC) |
| 459 | return false; |
| 460 | |
| 461 | SDValue MultHi = SUBENode->getOperand(1); |
| 462 | SDValue MultLo = SUBCNode->getOperand(1); |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 463 | SDNode *MultNode = MultHi.getNode(); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 464 | unsigned MultOpc = MultHi.getOpcode(); |
| 465 | |
| 466 | // MultHi and MultLo must be generated by the same node, |
| 467 | if (MultLo.getNode() != MultNode) |
| 468 | return false; |
| 469 | |
| 470 | // and it must be a multiplication. |
| 471 | if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI) |
| 472 | return false; |
| 473 | |
| 474 | // MultLo amd MultHi must be the first and second output of MultNode |
| 475 | // respectively. |
| 476 | if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0) |
| 477 | return false; |
| 478 | |
| 479 | // Transform this to a MSUB only if SUBENode and SUBCNode are the only users |
| 480 | // of the values of MultNode, in which case MultNode will be removed in later |
| 481 | // phases. |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 482 | // If there exist users other than SUBENode or SUBCNode, this function returns |
| 483 | // here, which will result in MultNode being mapped to a single MULT |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 484 | // instruction node rather than a pair of MULT and MSUB instructions being |
| 485 | // produced. |
| 486 | if (!MultHi.hasOneUse() || !MultLo.hasOneUse()) |
| 487 | return false; |
| 488 | |
| 489 | SDValue Chain = CurDAG->getEntryNode(); |
| 490 | DebugLoc dl = SUBENode->getDebugLoc(); |
| 491 | |
| 492 | // create MipsSub(u) node |
| 493 | MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MSubu : MipsISD::MSub; |
| 494 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 495 | SDValue MSub = CurDAG->getNode(MultOpc, dl, MVT::Glue, |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 496 | MultNode->getOperand(0),// Factor 0 |
| 497 | MultNode->getOperand(1),// Factor 1 |
| 498 | SUBCNode->getOperand(0),// Lo0 |
| 499 | SUBENode->getOperand(0));// Hi0 |
| 500 | |
| 501 | // create CopyFromReg nodes |
| 502 | SDValue CopyFromLo = CurDAG->getCopyFromReg(Chain, dl, Mips::LO, MVT::i32, |
| 503 | MSub); |
| 504 | SDValue CopyFromHi = CurDAG->getCopyFromReg(CopyFromLo.getValue(1), dl, |
| 505 | Mips::HI, MVT::i32, |
| 506 | CopyFromLo.getValue(2)); |
| 507 | |
| 508 | // replace uses of sube and subc here |
| 509 | if (!SDValue(SUBCNode, 0).use_empty()) |
| 510 | CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBCNode, 0), CopyFromLo); |
| 511 | |
| 512 | if (!SDValue(SUBENode, 0).use_empty()) |
| 513 | CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBENode, 0), CopyFromHi); |
| 514 | |
| 515 | return true; |
| 516 | } |
| 517 | |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 518 | static SDValue PerformADDECombine(SDNode *N, SelectionDAG &DAG, |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 519 | TargetLowering::DAGCombinerInfo &DCI, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 520 | const MipsSubtarget *Subtarget) { |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 521 | if (DCI.isBeforeLegalize()) |
| 522 | return SDValue(); |
| 523 | |
Akira Hatanaka | e184fec | 2011-11-11 04:18:21 +0000 | [diff] [blame] | 524 | if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 && |
| 525 | SelectMadd(N, &DAG)) |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 526 | return SDValue(N, 0); |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 527 | |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 528 | return SDValue(); |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 529 | } |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 530 | |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 531 | static SDValue PerformSUBECombine(SDNode *N, SelectionDAG &DAG, |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 532 | TargetLowering::DAGCombinerInfo &DCI, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 533 | const MipsSubtarget *Subtarget) { |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 534 | if (DCI.isBeforeLegalize()) |
| 535 | return SDValue(); |
| 536 | |
Akira Hatanaka | e184fec | 2011-11-11 04:18:21 +0000 | [diff] [blame] | 537 | if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 && |
| 538 | SelectMsub(N, &DAG)) |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 539 | return SDValue(N, 0); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 540 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 541 | return SDValue(); |
| 542 | } |
| 543 | |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 544 | static SDValue PerformDivRemCombine(SDNode *N, SelectionDAG &DAG, |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 545 | TargetLowering::DAGCombinerInfo &DCI, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 546 | const MipsSubtarget *Subtarget) { |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 547 | if (DCI.isBeforeLegalizeOps()) |
| 548 | return SDValue(); |
| 549 | |
Akira Hatanaka | dda4a07 | 2011-10-03 21:06:13 +0000 | [diff] [blame] | 550 | EVT Ty = N->getValueType(0); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 551 | unsigned LO = (Ty == MVT::i32) ? Mips::LO : Mips::LO64; |
| 552 | unsigned HI = (Ty == MVT::i32) ? Mips::HI : Mips::HI64; |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 553 | unsigned opc = N->getOpcode() == ISD::SDIVREM ? MipsISD::DivRem : |
| 554 | MipsISD::DivRemU; |
| 555 | DebugLoc dl = N->getDebugLoc(); |
| 556 | |
| 557 | SDValue DivRem = DAG.getNode(opc, dl, MVT::Glue, |
| 558 | N->getOperand(0), N->getOperand(1)); |
| 559 | SDValue InChain = DAG.getEntryNode(); |
| 560 | SDValue InGlue = DivRem; |
| 561 | |
| 562 | // insert MFLO |
| 563 | if (N->hasAnyUseOfValue(0)) { |
Akira Hatanaka | dda4a07 | 2011-10-03 21:06:13 +0000 | [diff] [blame] | 564 | SDValue CopyFromLo = DAG.getCopyFromReg(InChain, dl, LO, Ty, |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 565 | InGlue); |
| 566 | DAG.ReplaceAllUsesOfValueWith(SDValue(N, 0), CopyFromLo); |
| 567 | InChain = CopyFromLo.getValue(1); |
| 568 | InGlue = CopyFromLo.getValue(2); |
| 569 | } |
| 570 | |
| 571 | // insert MFHI |
| 572 | if (N->hasAnyUseOfValue(1)) { |
| 573 | SDValue CopyFromHi = DAG.getCopyFromReg(InChain, dl, |
Akira Hatanaka | dda4a07 | 2011-10-03 21:06:13 +0000 | [diff] [blame] | 574 | HI, Ty, InGlue); |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 575 | DAG.ReplaceAllUsesOfValueWith(SDValue(N, 1), CopyFromHi); |
| 576 | } |
| 577 | |
| 578 | return SDValue(); |
| 579 | } |
| 580 | |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 581 | static Mips::CondCode FPCondCCodeToFCC(ISD::CondCode CC) { |
| 582 | switch (CC) { |
| 583 | default: llvm_unreachable("Unknown fp condition code!"); |
| 584 | case ISD::SETEQ: |
| 585 | case ISD::SETOEQ: return Mips::FCOND_OEQ; |
| 586 | case ISD::SETUNE: return Mips::FCOND_UNE; |
| 587 | case ISD::SETLT: |
| 588 | case ISD::SETOLT: return Mips::FCOND_OLT; |
| 589 | case ISD::SETGT: |
| 590 | case ISD::SETOGT: return Mips::FCOND_OGT; |
| 591 | case ISD::SETLE: |
| 592 | case ISD::SETOLE: return Mips::FCOND_OLE; |
| 593 | case ISD::SETGE: |
| 594 | case ISD::SETOGE: return Mips::FCOND_OGE; |
| 595 | case ISD::SETULT: return Mips::FCOND_ULT; |
| 596 | case ISD::SETULE: return Mips::FCOND_ULE; |
| 597 | case ISD::SETUGT: return Mips::FCOND_UGT; |
| 598 | case ISD::SETUGE: return Mips::FCOND_UGE; |
| 599 | case ISD::SETUO: return Mips::FCOND_UN; |
| 600 | case ISD::SETO: return Mips::FCOND_OR; |
| 601 | case ISD::SETNE: |
| 602 | case ISD::SETONE: return Mips::FCOND_ONE; |
| 603 | case ISD::SETUEQ: return Mips::FCOND_UEQ; |
| 604 | } |
| 605 | } |
| 606 | |
| 607 | |
| 608 | // Returns true if condition code has to be inverted. |
| 609 | static bool InvertFPCondCode(Mips::CondCode CC) { |
| 610 | if (CC >= Mips::FCOND_F && CC <= Mips::FCOND_NGT) |
| 611 | return false; |
| 612 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 613 | assert((CC >= Mips::FCOND_T && CC <= Mips::FCOND_GT) && |
| 614 | "Illegal Condition Code"); |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 615 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 616 | return true; |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 617 | } |
| 618 | |
| 619 | // Creates and returns an FPCmp node from a setcc node. |
| 620 | // Returns Op if setcc is not a floating point comparison. |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 621 | static SDValue CreateFPCmp(SelectionDAG &DAG, const SDValue &Op) { |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 622 | // must be a SETCC node |
| 623 | if (Op.getOpcode() != ISD::SETCC) |
| 624 | return Op; |
| 625 | |
| 626 | SDValue LHS = Op.getOperand(0); |
| 627 | |
| 628 | if (!LHS.getValueType().isFloatingPoint()) |
| 629 | return Op; |
| 630 | |
| 631 | SDValue RHS = Op.getOperand(1); |
| 632 | DebugLoc dl = Op.getDebugLoc(); |
| 633 | |
Akira Hatanaka | 0bf3dfb | 2011-04-15 21:00:26 +0000 | [diff] [blame] | 634 | // Assume the 3rd operand is a CondCodeSDNode. Add code to check the type of |
| 635 | // node if necessary. |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 636 | ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(2))->get(); |
| 637 | |
| 638 | return DAG.getNode(MipsISD::FPCmp, dl, MVT::Glue, LHS, RHS, |
| 639 | DAG.getConstant(FPCondCCodeToFCC(CC), MVT::i32)); |
| 640 | } |
| 641 | |
| 642 | // Creates and returns a CMovFPT/F node. |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 643 | static SDValue CreateCMovFP(SelectionDAG &DAG, SDValue Cond, SDValue True, |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 644 | SDValue False, DebugLoc DL) { |
| 645 | bool invert = InvertFPCondCode((Mips::CondCode) |
| 646 | cast<ConstantSDNode>(Cond.getOperand(2)) |
| 647 | ->getSExtValue()); |
| 648 | |
| 649 | return DAG.getNode((invert ? MipsISD::CMovFP_F : MipsISD::CMovFP_T), DL, |
| 650 | True.getValueType(), True, False, Cond); |
| 651 | } |
| 652 | |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 653 | static SDValue PerformSELECTCombine(SDNode *N, SelectionDAG &DAG, |
Akira Hatanaka | e2bdf7f | 2012-03-08 02:14:24 +0000 | [diff] [blame] | 654 | TargetLowering::DAGCombinerInfo &DCI, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 655 | const MipsSubtarget *Subtarget) { |
Akira Hatanaka | e2bdf7f | 2012-03-08 02:14:24 +0000 | [diff] [blame] | 656 | if (DCI.isBeforeLegalizeOps()) |
| 657 | return SDValue(); |
| 658 | |
| 659 | SDValue SetCC = N->getOperand(0); |
| 660 | |
| 661 | if ((SetCC.getOpcode() != ISD::SETCC) || |
| 662 | !SetCC.getOperand(0).getValueType().isInteger()) |
| 663 | return SDValue(); |
| 664 | |
| 665 | SDValue False = N->getOperand(2); |
| 666 | EVT FalseTy = False.getValueType(); |
| 667 | |
| 668 | if (!FalseTy.isInteger()) |
| 669 | return SDValue(); |
| 670 | |
| 671 | ConstantSDNode *CN = dyn_cast<ConstantSDNode>(False); |
| 672 | |
| 673 | if (!CN || CN->getZExtValue()) |
| 674 | return SDValue(); |
| 675 | |
| 676 | const DebugLoc DL = N->getDebugLoc(); |
| 677 | ISD::CondCode CC = cast<CondCodeSDNode>(SetCC.getOperand(2))->get(); |
| 678 | SDValue True = N->getOperand(1); |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 679 | |
Akira Hatanaka | e2bdf7f | 2012-03-08 02:14:24 +0000 | [diff] [blame] | 680 | SetCC = DAG.getSetCC(DL, SetCC.getValueType(), SetCC.getOperand(0), |
| 681 | SetCC.getOperand(1), ISD::getSetCCInverse(CC, true)); |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 682 | |
Akira Hatanaka | e2bdf7f | 2012-03-08 02:14:24 +0000 | [diff] [blame] | 683 | return DAG.getNode(ISD::SELECT, DL, FalseTy, SetCC, False, True); |
| 684 | } |
| 685 | |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 686 | static SDValue PerformANDCombine(SDNode *N, SelectionDAG &DAG, |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 687 | TargetLowering::DAGCombinerInfo &DCI, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 688 | const MipsSubtarget *Subtarget) { |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 689 | // Pattern match EXT. |
| 690 | // $dst = and ((sra or srl) $src , pos), (2**size - 1) |
| 691 | // => ext $dst, $src, size, pos |
Akira Hatanaka | 5663344 | 2011-09-20 23:53:09 +0000 | [diff] [blame] | 692 | if (DCI.isBeforeLegalizeOps() || !Subtarget->hasMips32r2()) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 693 | return SDValue(); |
| 694 | |
| 695 | SDValue ShiftRight = N->getOperand(0), Mask = N->getOperand(1); |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 696 | unsigned ShiftRightOpc = ShiftRight.getOpcode(); |
| 697 | |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 698 | // Op's first operand must be a shift right. |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 699 | if (ShiftRightOpc != ISD::SRA && ShiftRightOpc != ISD::SRL) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 700 | return SDValue(); |
| 701 | |
| 702 | // The second operand of the shift must be an immediate. |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 703 | ConstantSDNode *CN; |
| 704 | if (!(CN = dyn_cast<ConstantSDNode>(ShiftRight.getOperand(1)))) |
| 705 | return SDValue(); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 706 | |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 707 | uint64_t Pos = CN->getZExtValue(); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 708 | uint64_t SMPos, SMSize; |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 709 | |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 710 | // Op's second operand must be a shifted mask. |
| 711 | if (!(CN = dyn_cast<ConstantSDNode>(Mask)) || |
Akira Hatanaka | 854a7db | 2011-08-19 22:59:00 +0000 | [diff] [blame] | 712 | !IsShiftedMask(CN->getZExtValue(), SMPos, SMSize)) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 713 | return SDValue(); |
| 714 | |
| 715 | // Return if the shifted mask does not start at bit 0 or the sum of its size |
| 716 | // and Pos exceeds the word's size. |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 717 | EVT ValTy = N->getValueType(0); |
| 718 | if (SMPos != 0 || Pos + SMSize > ValTy.getSizeInBits()) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 719 | return SDValue(); |
| 720 | |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 721 | return DAG.getNode(MipsISD::Ext, N->getDebugLoc(), ValTy, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 722 | ShiftRight.getOperand(0), DAG.getConstant(Pos, MVT::i32), |
Akira Hatanaka | 667645f | 2011-08-17 22:59:46 +0000 | [diff] [blame] | 723 | DAG.getConstant(SMSize, MVT::i32)); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 724 | } |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 725 | |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 726 | static SDValue PerformORCombine(SDNode *N, SelectionDAG &DAG, |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 727 | TargetLowering::DAGCombinerInfo &DCI, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 728 | const MipsSubtarget *Subtarget) { |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 729 | // Pattern match INS. |
| 730 | // $dst = or (and $src1 , mask0), (and (shl $src, pos), mask1), |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 731 | // where mask1 = (2**size - 1) << pos, mask0 = ~mask1 |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 732 | // => ins $dst, $src, size, pos, $src1 |
Akira Hatanaka | 5663344 | 2011-09-20 23:53:09 +0000 | [diff] [blame] | 733 | if (DCI.isBeforeLegalizeOps() || !Subtarget->hasMips32r2()) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 734 | return SDValue(); |
| 735 | |
| 736 | SDValue And0 = N->getOperand(0), And1 = N->getOperand(1); |
| 737 | uint64_t SMPos0, SMSize0, SMPos1, SMSize1; |
| 738 | ConstantSDNode *CN; |
| 739 | |
| 740 | // See if Op's first operand matches (and $src1 , mask0). |
| 741 | if (And0.getOpcode() != ISD::AND) |
| 742 | return SDValue(); |
| 743 | |
| 744 | if (!(CN = dyn_cast<ConstantSDNode>(And0.getOperand(1))) || |
Akira Hatanaka | 854a7db | 2011-08-19 22:59:00 +0000 | [diff] [blame] | 745 | !IsShiftedMask(~CN->getSExtValue(), SMPos0, SMSize0)) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 746 | return SDValue(); |
| 747 | |
| 748 | // See if Op's second operand matches (and (shl $src, pos), mask1). |
| 749 | if (And1.getOpcode() != ISD::AND) |
| 750 | return SDValue(); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 751 | |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 752 | if (!(CN = dyn_cast<ConstantSDNode>(And1.getOperand(1))) || |
Akira Hatanaka | 854a7db | 2011-08-19 22:59:00 +0000 | [diff] [blame] | 753 | !IsShiftedMask(CN->getZExtValue(), SMPos1, SMSize1)) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 754 | return SDValue(); |
| 755 | |
| 756 | // The shift masks must have the same position and size. |
| 757 | if (SMPos0 != SMPos1 || SMSize0 != SMSize1) |
| 758 | return SDValue(); |
| 759 | |
| 760 | SDValue Shl = And1.getOperand(0); |
| 761 | if (Shl.getOpcode() != ISD::SHL) |
| 762 | return SDValue(); |
| 763 | |
| 764 | if (!(CN = dyn_cast<ConstantSDNode>(Shl.getOperand(1)))) |
| 765 | return SDValue(); |
| 766 | |
| 767 | unsigned Shamt = CN->getZExtValue(); |
| 768 | |
| 769 | // Return if the shift amount and the first bit position of mask are not the |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 770 | // same. |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 771 | EVT ValTy = N->getValueType(0); |
| 772 | if ((Shamt != SMPos0) || (SMPos0 + SMSize0 > ValTy.getSizeInBits())) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 773 | return SDValue(); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 774 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 775 | return DAG.getNode(MipsISD::Ins, N->getDebugLoc(), ValTy, Shl.getOperand(0), |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 776 | DAG.getConstant(SMPos0, MVT::i32), |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 777 | DAG.getConstant(SMSize0, MVT::i32), And0.getOperand(0)); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 778 | } |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 779 | |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 780 | static SDValue PerformADDCombine(SDNode *N, SelectionDAG &DAG, |
Akira Hatanaka | 8782707 | 2012-06-13 20:33:18 +0000 | [diff] [blame] | 781 | TargetLowering::DAGCombinerInfo &DCI, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 782 | const MipsSubtarget *Subtarget) { |
Akira Hatanaka | 8782707 | 2012-06-13 20:33:18 +0000 | [diff] [blame] | 783 | // (add v0, (add v1, abs_lo(tjt))) => (add (add v0, v1), abs_lo(tjt)) |
| 784 | |
| 785 | if (DCI.isBeforeLegalizeOps()) |
| 786 | return SDValue(); |
| 787 | |
| 788 | SDValue Add = N->getOperand(1); |
| 789 | |
| 790 | if (Add.getOpcode() != ISD::ADD) |
| 791 | return SDValue(); |
| 792 | |
| 793 | SDValue Lo = Add.getOperand(1); |
| 794 | |
| 795 | if ((Lo.getOpcode() != MipsISD::Lo) || |
| 796 | (Lo.getOperand(0).getOpcode() != ISD::TargetJumpTable)) |
| 797 | return SDValue(); |
| 798 | |
| 799 | EVT ValTy = N->getValueType(0); |
| 800 | DebugLoc DL = N->getDebugLoc(); |
| 801 | |
| 802 | SDValue Add1 = DAG.getNode(ISD::ADD, DL, ValTy, N->getOperand(0), |
| 803 | Add.getOperand(0)); |
| 804 | return DAG.getNode(ISD::ADD, DL, ValTy, Add1, Lo); |
| 805 | } |
| 806 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 807 | SDValue MipsTargetLowering::PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 808 | const { |
| 809 | SelectionDAG &DAG = DCI.DAG; |
| 810 | unsigned opc = N->getOpcode(); |
| 811 | |
| 812 | switch (opc) { |
| 813 | default: break; |
| 814 | case ISD::ADDE: |
| 815 | return PerformADDECombine(N, DAG, DCI, Subtarget); |
| 816 | case ISD::SUBE: |
| 817 | return PerformSUBECombine(N, DAG, DCI, Subtarget); |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 818 | case ISD::SDIVREM: |
| 819 | case ISD::UDIVREM: |
| 820 | return PerformDivRemCombine(N, DAG, DCI, Subtarget); |
Akira Hatanaka | e2bdf7f | 2012-03-08 02:14:24 +0000 | [diff] [blame] | 821 | case ISD::SELECT: |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 822 | return PerformSELECTCombine(N, DAG, DCI, Subtarget); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 823 | case ISD::AND: |
| 824 | return PerformANDCombine(N, DAG, DCI, Subtarget); |
| 825 | case ISD::OR: |
| 826 | return PerformORCombine(N, DAG, DCI, Subtarget); |
Akira Hatanaka | 8782707 | 2012-06-13 20:33:18 +0000 | [diff] [blame] | 827 | case ISD::ADD: |
| 828 | return PerformADDCombine(N, DAG, DCI, Subtarget); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 829 | } |
| 830 | |
| 831 | return SDValue(); |
| 832 | } |
| 833 | |
Akira Hatanaka | b430cec | 2012-09-21 23:58:31 +0000 | [diff] [blame] | 834 | void |
| 835 | MipsTargetLowering::LowerOperationWrapper(SDNode *N, |
| 836 | SmallVectorImpl<SDValue> &Results, |
| 837 | SelectionDAG &DAG) const { |
| 838 | SDValue Res = LowerOperation(SDValue(N, 0), DAG); |
| 839 | |
| 840 | for (unsigned I = 0, E = Res->getNumValues(); I != E; ++I) |
| 841 | Results.push_back(Res.getValue(I)); |
| 842 | } |
| 843 | |
| 844 | void |
| 845 | MipsTargetLowering::ReplaceNodeResults(SDNode *N, |
| 846 | SmallVectorImpl<SDValue> &Results, |
| 847 | SelectionDAG &DAG) const { |
| 848 | SDValue Res = LowerOperation(SDValue(N, 0), DAG); |
| 849 | |
| 850 | for (unsigned I = 0, E = Res->getNumValues(); I != E; ++I) |
| 851 | Results.push_back(Res.getValue(I)); |
| 852 | } |
| 853 | |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 854 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 855 | LowerOperation(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 856 | { |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 857 | switch (Op.getOpcode()) |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 858 | { |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 859 | case ISD::BRCOND: return LowerBRCOND(Op, DAG); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 860 | case ISD::ConstantPool: return LowerConstantPool(Op, DAG); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 861 | case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG); |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 862 | case ISD::BlockAddress: return LowerBlockAddress(Op, DAG); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 863 | case ISD::GlobalTLSAddress: return LowerGlobalTLSAddress(Op, DAG); |
| 864 | case ISD::JumpTable: return LowerJumpTable(Op, DAG); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 865 | case ISD::SELECT: return LowerSELECT(Op, DAG); |
Akira Hatanaka | 3fef29d | 2012-07-11 19:32:27 +0000 | [diff] [blame] | 866 | case ISD::SELECT_CC: return LowerSELECT_CC(Op, DAG); |
Akira Hatanaka | 0a40c23 | 2012-03-09 23:46:03 +0000 | [diff] [blame] | 867 | case ISD::SETCC: return LowerSETCC(Op, DAG); |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 868 | case ISD::VASTART: return LowerVASTART(Op, DAG); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 869 | case ISD::FCOPYSIGN: return LowerFCOPYSIGN(Op, DAG); |
Akira Hatanaka | c12a6e6 | 2012-04-11 22:49:04 +0000 | [diff] [blame] | 870 | case ISD::FABS: return LowerFABS(Op, DAG); |
Akira Hatanaka | 2e59147 | 2011-06-02 00:24:44 +0000 | [diff] [blame] | 871 | case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG); |
Akira Hatanaka | ba584fe | 2012-07-11 00:53:32 +0000 | [diff] [blame] | 872 | case ISD::RETURNADDR: return LowerRETURNADDR(Op, DAG); |
Akira Hatanaka | db54826 | 2011-07-19 23:30:50 +0000 | [diff] [blame] | 873 | case ISD::MEMBARRIER: return LowerMEMBARRIER(Op, DAG); |
Eli Friedman | 1464846 | 2011-07-27 22:21:52 +0000 | [diff] [blame] | 874 | case ISD::ATOMIC_FENCE: return LowerATOMIC_FENCE(Op, DAG); |
Akira Hatanaka | a284acb | 2012-05-09 00:55:21 +0000 | [diff] [blame] | 875 | case ISD::SHL_PARTS: return LowerShiftLeftParts(Op, DAG); |
| 876 | case ISD::SRA_PARTS: return LowerShiftRightParts(Op, DAG, true); |
| 877 | case ISD::SRL_PARTS: return LowerShiftRightParts(Op, DAG, false); |
Akira Hatanaka | 1cd0ec0 | 2012-06-02 00:03:49 +0000 | [diff] [blame] | 878 | case ISD::LOAD: return LowerLOAD(Op, DAG); |
| 879 | case ISD::STORE: return LowerSTORE(Op, DAG); |
Akira Hatanaka | fd89e6f | 2012-09-27 02:05:42 +0000 | [diff] [blame] | 880 | case ISD::INTRINSIC_WO_CHAIN: return LowerINTRINSIC_WO_CHAIN(Op, DAG); |
| 881 | case ISD::INTRINSIC_W_CHAIN: return LowerINTRINSIC_W_CHAIN(Op, DAG); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 882 | } |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 883 | return SDValue(); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 884 | } |
| 885 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 886 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 887 | // Lower helper functions |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 888 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 889 | |
| 890 | // AddLiveIn - This helper function adds the specified physical register to the |
| 891 | // MachineFunction as a live in value. It also creates a corresponding |
| 892 | // virtual register for it. |
| 893 | static unsigned |
Craig Topper | 44d2382 | 2012-02-22 05:59:10 +0000 | [diff] [blame] | 894 | AddLiveIn(MachineFunction &MF, unsigned PReg, const TargetRegisterClass *RC) |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 895 | { |
| 896 | assert(RC->contains(PReg) && "Not the correct regclass!"); |
Chris Lattner | 84bc542 | 2007-12-31 04:13:23 +0000 | [diff] [blame] | 897 | unsigned VReg = MF.getRegInfo().createVirtualRegister(RC); |
| 898 | MF.getRegInfo().addLiveIn(PReg, VReg); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 899 | return VReg; |
| 900 | } |
| 901 | |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 902 | // Get fp branch code (not opcode) from condition code. |
| 903 | static Mips::FPBranchCode GetFPBranchCodeFromCond(Mips::CondCode CC) { |
| 904 | if (CC >= Mips::FCOND_F && CC <= Mips::FCOND_NGT) |
| 905 | return Mips::BRANCH_T; |
| 906 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 907 | assert((CC >= Mips::FCOND_T && CC <= Mips::FCOND_GT) && |
| 908 | "Invalid CondCode."); |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 909 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 910 | return Mips::BRANCH_F; |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 911 | } |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 912 | |
Akira Hatanaka | 8ae330a | 2011-10-17 18:53:29 +0000 | [diff] [blame] | 913 | /* |
Akira Hatanaka | 14487d4 | 2011-06-07 19:28:39 +0000 | [diff] [blame] | 914 | static MachineBasicBlock* ExpandCondMov(MachineInstr *MI, MachineBasicBlock *BB, |
| 915 | DebugLoc dl, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 916 | const MipsSubtarget *Subtarget, |
Akira Hatanaka | 14487d4 | 2011-06-07 19:28:39 +0000 | [diff] [blame] | 917 | const TargetInstrInfo *TII, |
| 918 | bool isFPCmp, unsigned Opc) { |
| 919 | // There is no need to expand CMov instructions if target has |
| 920 | // conditional moves. |
| 921 | if (Subtarget->hasCondMov()) |
| 922 | return BB; |
| 923 | |
| 924 | // To "insert" a SELECT_CC instruction, we actually have to insert the |
| 925 | // diamond control-flow pattern. The incoming instruction knows the |
| 926 | // destination vreg to set, the condition code register to branch on, the |
| 927 | // true/false values to select between, and a branch opcode to use. |
| 928 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 929 | MachineFunction::iterator It = BB; |
| 930 | ++It; |
| 931 | |
| 932 | // thisMBB: |
| 933 | // ... |
| 934 | // TrueVal = ... |
| 935 | // setcc r1, r2, r3 |
| 936 | // bNE r1, r0, copy1MBB |
| 937 | // fallthrough --> copy0MBB |
| 938 | MachineBasicBlock *thisMBB = BB; |
| 939 | MachineFunction *F = BB->getParent(); |
| 940 | MachineBasicBlock *copy0MBB = F->CreateMachineBasicBlock(LLVM_BB); |
| 941 | MachineBasicBlock *sinkMBB = F->CreateMachineBasicBlock(LLVM_BB); |
| 942 | F->insert(It, copy0MBB); |
| 943 | F->insert(It, sinkMBB); |
| 944 | |
| 945 | // Transfer the remainder of BB and its successor edges to sinkMBB. |
| 946 | sinkMBB->splice(sinkMBB->begin(), BB, |
| 947 | llvm::next(MachineBasicBlock::iterator(MI)), |
| 948 | BB->end()); |
| 949 | sinkMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 950 | |
| 951 | // Next, add the true and fallthrough blocks as its successors. |
| 952 | BB->addSuccessor(copy0MBB); |
| 953 | BB->addSuccessor(sinkMBB); |
| 954 | |
| 955 | // Emit the right instruction according to the type of the operands compared |
| 956 | if (isFPCmp) |
| 957 | BuildMI(BB, dl, TII->get(Opc)).addMBB(sinkMBB); |
| 958 | else |
| 959 | BuildMI(BB, dl, TII->get(Opc)).addReg(MI->getOperand(2).getReg()) |
| 960 | .addReg(Mips::ZERO).addMBB(sinkMBB); |
| 961 | |
| 962 | // copy0MBB: |
| 963 | // %FalseValue = ... |
| 964 | // # fallthrough to sinkMBB |
| 965 | BB = copy0MBB; |
| 966 | |
| 967 | // Update machine-CFG edges |
| 968 | BB->addSuccessor(sinkMBB); |
| 969 | |
| 970 | // sinkMBB: |
| 971 | // %Result = phi [ %TrueValue, thisMBB ], [ %FalseValue, copy0MBB ] |
| 972 | // ... |
| 973 | BB = sinkMBB; |
| 974 | |
| 975 | if (isFPCmp) |
| 976 | BuildMI(*BB, BB->begin(), dl, |
| 977 | TII->get(Mips::PHI), MI->getOperand(0).getReg()) |
| 978 | .addReg(MI->getOperand(2).getReg()).addMBB(thisMBB) |
| 979 | .addReg(MI->getOperand(1).getReg()).addMBB(copy0MBB); |
| 980 | else |
| 981 | BuildMI(*BB, BB->begin(), dl, |
| 982 | TII->get(Mips::PHI), MI->getOperand(0).getReg()) |
| 983 | .addReg(MI->getOperand(3).getReg()).addMBB(thisMBB) |
| 984 | .addReg(MI->getOperand(1).getReg()).addMBB(copy0MBB); |
| 985 | |
| 986 | MI->eraseFromParent(); // The pseudo instruction is gone now. |
| 987 | return BB; |
| 988 | } |
Akira Hatanaka | 8ae330a | 2011-10-17 18:53:29 +0000 | [diff] [blame] | 989 | */ |
Akira Hatanaka | 01f7089 | 2012-09-27 02:15:57 +0000 | [diff] [blame] | 990 | |
| 991 | MachineBasicBlock * |
| 992 | MipsTargetLowering::EmitBPOSGE32(MachineInstr *MI, MachineBasicBlock *BB) const{ |
| 993 | // $bb: |
| 994 | // bposge32_pseudo $vr0 |
| 995 | // => |
| 996 | // $bb: |
| 997 | // bposge32 $tbb |
| 998 | // $fbb: |
| 999 | // li $vr2, 0 |
| 1000 | // b $sink |
| 1001 | // $tbb: |
| 1002 | // li $vr1, 1 |
| 1003 | // $sink: |
| 1004 | // $vr0 = phi($vr2, $fbb, $vr1, $tbb) |
| 1005 | |
| 1006 | MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo(); |
| 1007 | const TargetInstrInfo *TII = getTargetMachine().getInstrInfo(); |
| 1008 | const TargetRegisterClass *RC = &Mips::CPURegsRegClass; |
| 1009 | DebugLoc DL = MI->getDebugLoc(); |
| 1010 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 1011 | MachineFunction::iterator It = llvm::next(MachineFunction::iterator(BB)); |
| 1012 | MachineFunction *F = BB->getParent(); |
| 1013 | MachineBasicBlock *FBB = F->CreateMachineBasicBlock(LLVM_BB); |
| 1014 | MachineBasicBlock *TBB = F->CreateMachineBasicBlock(LLVM_BB); |
| 1015 | MachineBasicBlock *Sink = F->CreateMachineBasicBlock(LLVM_BB); |
| 1016 | F->insert(It, FBB); |
| 1017 | F->insert(It, TBB); |
| 1018 | F->insert(It, Sink); |
| 1019 | |
| 1020 | // Transfer the remainder of BB and its successor edges to Sink. |
| 1021 | Sink->splice(Sink->begin(), BB, llvm::next(MachineBasicBlock::iterator(MI)), |
| 1022 | BB->end()); |
| 1023 | Sink->transferSuccessorsAndUpdatePHIs(BB); |
| 1024 | |
| 1025 | // Add successors. |
| 1026 | BB->addSuccessor(FBB); |
| 1027 | BB->addSuccessor(TBB); |
| 1028 | FBB->addSuccessor(Sink); |
| 1029 | TBB->addSuccessor(Sink); |
| 1030 | |
| 1031 | // Insert the real bposge32 instruction to $BB. |
| 1032 | BuildMI(BB, DL, TII->get(Mips::BPOSGE32)).addMBB(TBB); |
| 1033 | |
| 1034 | // Fill $FBB. |
| 1035 | unsigned VR2 = RegInfo.createVirtualRegister(RC); |
| 1036 | BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::ADDiu), VR2) |
| 1037 | .addReg(Mips::ZERO).addImm(0); |
| 1038 | BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::B)).addMBB(Sink); |
| 1039 | |
| 1040 | // Fill $TBB. |
| 1041 | unsigned VR1 = RegInfo.createVirtualRegister(RC); |
| 1042 | BuildMI(*TBB, TBB->end(), DL, TII->get(Mips::ADDiu), VR1) |
| 1043 | .addReg(Mips::ZERO).addImm(1); |
| 1044 | |
| 1045 | // Insert phi function to $Sink. |
| 1046 | BuildMI(*Sink, Sink->begin(), DL, TII->get(Mips::PHI), |
| 1047 | MI->getOperand(0).getReg()) |
| 1048 | .addReg(VR2).addMBB(FBB).addReg(VR1).addMBB(TBB); |
| 1049 | |
| 1050 | MI->eraseFromParent(); // The pseudo instruction is gone now. |
| 1051 | return Sink; |
| 1052 | } |
| 1053 | |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 1054 | MachineBasicBlock * |
| 1055 | MipsTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI, |
Dan Gohman | af1d8ca | 2010-05-01 00:01:06 +0000 | [diff] [blame] | 1056 | MachineBasicBlock *BB) const { |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 1057 | switch (MI->getOpcode()) { |
Craig Topper | bc21981 | 2012-02-07 02:50:20 +0000 | [diff] [blame] | 1058 | default: llvm_unreachable("Unexpected instr type to insert"); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1059 | case Mips::ATOMIC_LOAD_ADD_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1060 | case Mips::ATOMIC_LOAD_ADD_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1061 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::ADDu); |
| 1062 | case Mips::ATOMIC_LOAD_ADD_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1063 | case Mips::ATOMIC_LOAD_ADD_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1064 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::ADDu); |
| 1065 | case Mips::ATOMIC_LOAD_ADD_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1066 | case Mips::ATOMIC_LOAD_ADD_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1067 | return EmitAtomicBinary(MI, BB, 4, Mips::ADDu); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1068 | case Mips::ATOMIC_LOAD_ADD_I64: |
| 1069 | case Mips::ATOMIC_LOAD_ADD_I64_P8: |
| 1070 | return EmitAtomicBinary(MI, BB, 8, Mips::DADDu); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1071 | |
| 1072 | case Mips::ATOMIC_LOAD_AND_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1073 | case Mips::ATOMIC_LOAD_AND_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1074 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::AND); |
| 1075 | case Mips::ATOMIC_LOAD_AND_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1076 | case Mips::ATOMIC_LOAD_AND_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1077 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::AND); |
| 1078 | case Mips::ATOMIC_LOAD_AND_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1079 | case Mips::ATOMIC_LOAD_AND_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1080 | return EmitAtomicBinary(MI, BB, 4, Mips::AND); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1081 | case Mips::ATOMIC_LOAD_AND_I64: |
| 1082 | case Mips::ATOMIC_LOAD_AND_I64_P8: |
Akira Hatanaka | 7386612 | 2011-11-12 02:38:12 +0000 | [diff] [blame] | 1083 | return EmitAtomicBinary(MI, BB, 8, Mips::AND64); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1084 | |
| 1085 | case Mips::ATOMIC_LOAD_OR_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1086 | case Mips::ATOMIC_LOAD_OR_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1087 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::OR); |
| 1088 | case Mips::ATOMIC_LOAD_OR_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1089 | case Mips::ATOMIC_LOAD_OR_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1090 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::OR); |
| 1091 | case Mips::ATOMIC_LOAD_OR_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1092 | case Mips::ATOMIC_LOAD_OR_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1093 | return EmitAtomicBinary(MI, BB, 4, Mips::OR); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1094 | case Mips::ATOMIC_LOAD_OR_I64: |
| 1095 | case Mips::ATOMIC_LOAD_OR_I64_P8: |
| 1096 | return EmitAtomicBinary(MI, BB, 8, Mips::OR64); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1097 | |
| 1098 | case Mips::ATOMIC_LOAD_XOR_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1099 | case Mips::ATOMIC_LOAD_XOR_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1100 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::XOR); |
| 1101 | case Mips::ATOMIC_LOAD_XOR_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1102 | case Mips::ATOMIC_LOAD_XOR_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1103 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::XOR); |
| 1104 | case Mips::ATOMIC_LOAD_XOR_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1105 | case Mips::ATOMIC_LOAD_XOR_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1106 | return EmitAtomicBinary(MI, BB, 4, Mips::XOR); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1107 | case Mips::ATOMIC_LOAD_XOR_I64: |
| 1108 | case Mips::ATOMIC_LOAD_XOR_I64_P8: |
| 1109 | return EmitAtomicBinary(MI, BB, 8, Mips::XOR64); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1110 | |
| 1111 | case Mips::ATOMIC_LOAD_NAND_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1112 | case Mips::ATOMIC_LOAD_NAND_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1113 | return EmitAtomicBinaryPartword(MI, BB, 1, 0, true); |
| 1114 | case Mips::ATOMIC_LOAD_NAND_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1115 | case Mips::ATOMIC_LOAD_NAND_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1116 | return EmitAtomicBinaryPartword(MI, BB, 2, 0, true); |
| 1117 | case Mips::ATOMIC_LOAD_NAND_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1118 | case Mips::ATOMIC_LOAD_NAND_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1119 | return EmitAtomicBinary(MI, BB, 4, 0, true); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1120 | case Mips::ATOMIC_LOAD_NAND_I64: |
| 1121 | case Mips::ATOMIC_LOAD_NAND_I64_P8: |
| 1122 | return EmitAtomicBinary(MI, BB, 8, 0, true); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1123 | |
| 1124 | case Mips::ATOMIC_LOAD_SUB_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1125 | case Mips::ATOMIC_LOAD_SUB_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1126 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::SUBu); |
| 1127 | case Mips::ATOMIC_LOAD_SUB_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1128 | case Mips::ATOMIC_LOAD_SUB_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1129 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::SUBu); |
| 1130 | case Mips::ATOMIC_LOAD_SUB_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1131 | case Mips::ATOMIC_LOAD_SUB_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1132 | return EmitAtomicBinary(MI, BB, 4, Mips::SUBu); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1133 | case Mips::ATOMIC_LOAD_SUB_I64: |
| 1134 | case Mips::ATOMIC_LOAD_SUB_I64_P8: |
| 1135 | return EmitAtomicBinary(MI, BB, 8, Mips::DSUBu); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1136 | |
| 1137 | case Mips::ATOMIC_SWAP_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1138 | case Mips::ATOMIC_SWAP_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1139 | return EmitAtomicBinaryPartword(MI, BB, 1, 0); |
| 1140 | case Mips::ATOMIC_SWAP_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1141 | case Mips::ATOMIC_SWAP_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1142 | return EmitAtomicBinaryPartword(MI, BB, 2, 0); |
| 1143 | case Mips::ATOMIC_SWAP_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1144 | case Mips::ATOMIC_SWAP_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1145 | return EmitAtomicBinary(MI, BB, 4, 0); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1146 | case Mips::ATOMIC_SWAP_I64: |
| 1147 | case Mips::ATOMIC_SWAP_I64_P8: |
| 1148 | return EmitAtomicBinary(MI, BB, 8, 0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1149 | |
| 1150 | case Mips::ATOMIC_CMP_SWAP_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1151 | case Mips::ATOMIC_CMP_SWAP_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1152 | return EmitAtomicCmpSwapPartword(MI, BB, 1); |
| 1153 | case Mips::ATOMIC_CMP_SWAP_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1154 | case Mips::ATOMIC_CMP_SWAP_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1155 | return EmitAtomicCmpSwapPartword(MI, BB, 2); |
| 1156 | case Mips::ATOMIC_CMP_SWAP_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1157 | case Mips::ATOMIC_CMP_SWAP_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1158 | return EmitAtomicCmpSwap(MI, BB, 4); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1159 | case Mips::ATOMIC_CMP_SWAP_I64: |
| 1160 | case Mips::ATOMIC_CMP_SWAP_I64_P8: |
| 1161 | return EmitAtomicCmpSwap(MI, BB, 8); |
Akira Hatanaka | 01f7089 | 2012-09-27 02:15:57 +0000 | [diff] [blame] | 1162 | case Mips::BPOSGE32_PSEUDO: |
| 1163 | return EmitBPOSGE32(MI, BB); |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1164 | } |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 1165 | } |
| 1166 | |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1167 | // This function also handles Mips::ATOMIC_SWAP_I32 (when BinOpcode == 0), and |
| 1168 | // Mips::ATOMIC_LOAD_NAND_I32 (when Nand == true) |
| 1169 | MachineBasicBlock * |
| 1170 | MipsTargetLowering::EmitAtomicBinary(MachineInstr *MI, MachineBasicBlock *BB, |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 1171 | unsigned Size, unsigned BinOpcode, |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1172 | bool Nand) const { |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1173 | assert((Size == 4 || Size == 8) && "Unsupported size for EmitAtomicBinary."); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1174 | |
| 1175 | MachineFunction *MF = BB->getParent(); |
| 1176 | MachineRegisterInfo &RegInfo = MF->getRegInfo(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1177 | const TargetRegisterClass *RC = getRegClassFor(MVT::getIntegerVT(Size * 8)); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1178 | const TargetInstrInfo *TII = getTargetMachine().getInstrInfo(); |
| 1179 | DebugLoc dl = MI->getDebugLoc(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1180 | unsigned LL, SC, AND, NOR, ZERO, BEQ; |
| 1181 | |
| 1182 | if (Size == 4) { |
| 1183 | LL = IsN64 ? Mips::LL_P8 : Mips::LL; |
| 1184 | SC = IsN64 ? Mips::SC_P8 : Mips::SC; |
| 1185 | AND = Mips::AND; |
| 1186 | NOR = Mips::NOR; |
| 1187 | ZERO = Mips::ZERO; |
| 1188 | BEQ = Mips::BEQ; |
| 1189 | } |
| 1190 | else { |
| 1191 | LL = IsN64 ? Mips::LLD_P8 : Mips::LLD; |
| 1192 | SC = IsN64 ? Mips::SCD_P8 : Mips::SCD; |
| 1193 | AND = Mips::AND64; |
| 1194 | NOR = Mips::NOR64; |
| 1195 | ZERO = Mips::ZERO_64; |
| 1196 | BEQ = Mips::BEQ64; |
| 1197 | } |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1198 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1199 | unsigned OldVal = MI->getOperand(0).getReg(); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1200 | unsigned Ptr = MI->getOperand(1).getReg(); |
| 1201 | unsigned Incr = MI->getOperand(2).getReg(); |
| 1202 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1203 | unsigned StoreVal = RegInfo.createVirtualRegister(RC); |
| 1204 | unsigned AndRes = RegInfo.createVirtualRegister(RC); |
| 1205 | unsigned Success = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1206 | |
| 1207 | // insert new blocks after the current block |
| 1208 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 1209 | MachineBasicBlock *loopMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1210 | MachineBasicBlock *exitMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1211 | MachineFunction::iterator It = BB; |
| 1212 | ++It; |
| 1213 | MF->insert(It, loopMBB); |
| 1214 | MF->insert(It, exitMBB); |
| 1215 | |
| 1216 | // Transfer the remainder of BB and its successor edges to exitMBB. |
| 1217 | exitMBB->splice(exitMBB->begin(), BB, |
| 1218 | llvm::next(MachineBasicBlock::iterator(MI)), |
| 1219 | BB->end()); |
| 1220 | exitMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 1221 | |
| 1222 | // thisMBB: |
| 1223 | // ... |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1224 | // fallthrough --> loopMBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1225 | BB->addSuccessor(loopMBB); |
Akira Hatanaka | 81b4411 | 2011-07-19 17:09:53 +0000 | [diff] [blame] | 1226 | loopMBB->addSuccessor(loopMBB); |
| 1227 | loopMBB->addSuccessor(exitMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1228 | |
| 1229 | // loopMBB: |
| 1230 | // ll oldval, 0(ptr) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1231 | // <binop> storeval, oldval, incr |
| 1232 | // sc success, storeval, 0(ptr) |
| 1233 | // beq success, $0, loopMBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1234 | BB = loopMBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1235 | BuildMI(BB, dl, TII->get(LL), OldVal).addReg(Ptr).addImm(0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1236 | if (Nand) { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1237 | // and andres, oldval, incr |
| 1238 | // nor storeval, $0, andres |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1239 | BuildMI(BB, dl, TII->get(AND), AndRes).addReg(OldVal).addReg(Incr); |
| 1240 | BuildMI(BB, dl, TII->get(NOR), StoreVal).addReg(ZERO).addReg(AndRes); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1241 | } else if (BinOpcode) { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1242 | // <binop> storeval, oldval, incr |
| 1243 | BuildMI(BB, dl, TII->get(BinOpcode), StoreVal).addReg(OldVal).addReg(Incr); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1244 | } else { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1245 | StoreVal = Incr; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1246 | } |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1247 | BuildMI(BB, dl, TII->get(SC), Success).addReg(StoreVal).addReg(Ptr).addImm(0); |
| 1248 | BuildMI(BB, dl, TII->get(BEQ)).addReg(Success).addReg(ZERO).addMBB(loopMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1249 | |
| 1250 | MI->eraseFromParent(); // The instruction is gone now. |
| 1251 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1252 | return exitMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1253 | } |
| 1254 | |
| 1255 | MachineBasicBlock * |
| 1256 | MipsTargetLowering::EmitAtomicBinaryPartword(MachineInstr *MI, |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1257 | MachineBasicBlock *BB, |
| 1258 | unsigned Size, unsigned BinOpcode, |
| 1259 | bool Nand) const { |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1260 | assert((Size == 1 || Size == 2) && |
| 1261 | "Unsupported size for EmitAtomicBinaryPartial."); |
| 1262 | |
| 1263 | MachineFunction *MF = BB->getParent(); |
| 1264 | MachineRegisterInfo &RegInfo = MF->getRegInfo(); |
| 1265 | const TargetRegisterClass *RC = getRegClassFor(MVT::i32); |
| 1266 | const TargetInstrInfo *TII = getTargetMachine().getInstrInfo(); |
| 1267 | DebugLoc dl = MI->getDebugLoc(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1268 | unsigned LL = IsN64 ? Mips::LL_P8 : Mips::LL; |
| 1269 | unsigned SC = IsN64 ? Mips::SC_P8 : Mips::SC; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1270 | |
| 1271 | unsigned Dest = MI->getOperand(0).getReg(); |
| 1272 | unsigned Ptr = MI->getOperand(1).getReg(); |
| 1273 | unsigned Incr = MI->getOperand(2).getReg(); |
| 1274 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1275 | unsigned AlignedAddr = RegInfo.createVirtualRegister(RC); |
| 1276 | unsigned ShiftAmt = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1277 | unsigned Mask = RegInfo.createVirtualRegister(RC); |
| 1278 | unsigned Mask2 = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1279 | unsigned NewVal = RegInfo.createVirtualRegister(RC); |
| 1280 | unsigned OldVal = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1281 | unsigned Incr2 = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1282 | unsigned MaskLSB2 = RegInfo.createVirtualRegister(RC); |
| 1283 | unsigned PtrLSB2 = RegInfo.createVirtualRegister(RC); |
| 1284 | unsigned MaskUpper = RegInfo.createVirtualRegister(RC); |
| 1285 | unsigned AndRes = RegInfo.createVirtualRegister(RC); |
| 1286 | unsigned BinOpRes = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | bdd83fe | 2011-07-19 20:56:53 +0000 | [diff] [blame] | 1287 | unsigned MaskedOldVal0 = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1288 | unsigned StoreVal = RegInfo.createVirtualRegister(RC); |
| 1289 | unsigned MaskedOldVal1 = RegInfo.createVirtualRegister(RC); |
| 1290 | unsigned SrlRes = RegInfo.createVirtualRegister(RC); |
| 1291 | unsigned SllRes = RegInfo.createVirtualRegister(RC); |
| 1292 | unsigned Success = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1293 | |
| 1294 | // insert new blocks after the current block |
| 1295 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 1296 | MachineBasicBlock *loopMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1297 | MachineBasicBlock *sinkMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1298 | MachineBasicBlock *exitMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1299 | MachineFunction::iterator It = BB; |
| 1300 | ++It; |
| 1301 | MF->insert(It, loopMBB); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1302 | MF->insert(It, sinkMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1303 | MF->insert(It, exitMBB); |
| 1304 | |
| 1305 | // Transfer the remainder of BB and its successor edges to exitMBB. |
| 1306 | exitMBB->splice(exitMBB->begin(), BB, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1307 | llvm::next(MachineBasicBlock::iterator(MI)), BB->end()); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1308 | exitMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 1309 | |
Akira Hatanaka | 81b4411 | 2011-07-19 17:09:53 +0000 | [diff] [blame] | 1310 | BB->addSuccessor(loopMBB); |
| 1311 | loopMBB->addSuccessor(loopMBB); |
| 1312 | loopMBB->addSuccessor(sinkMBB); |
| 1313 | sinkMBB->addSuccessor(exitMBB); |
| 1314 | |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1315 | // thisMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1316 | // addiu masklsb2,$0,-4 # 0xfffffffc |
| 1317 | // and alignedaddr,ptr,masklsb2 |
| 1318 | // andi ptrlsb2,ptr,3 |
| 1319 | // sll shiftamt,ptrlsb2,3 |
| 1320 | // ori maskupper,$0,255 # 0xff |
| 1321 | // sll mask,maskupper,shiftamt |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1322 | // nor mask2,$0,mask |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1323 | // sll incr2,incr,shiftamt |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1324 | |
| 1325 | int64_t MaskImm = (Size == 1) ? 255 : 65535; |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1326 | BuildMI(BB, dl, TII->get(Mips::ADDiu), MaskLSB2) |
| 1327 | .addReg(Mips::ZERO).addImm(-4); |
| 1328 | BuildMI(BB, dl, TII->get(Mips::AND), AlignedAddr) |
| 1329 | .addReg(Ptr).addReg(MaskLSB2); |
| 1330 | BuildMI(BB, dl, TII->get(Mips::ANDi), PtrLSB2).addReg(Ptr).addImm(3); |
| 1331 | BuildMI(BB, dl, TII->get(Mips::SLL), ShiftAmt).addReg(PtrLSB2).addImm(3); |
| 1332 | BuildMI(BB, dl, TII->get(Mips::ORi), MaskUpper) |
| 1333 | .addReg(Mips::ZERO).addImm(MaskImm); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1334 | BuildMI(BB, dl, TII->get(Mips::SLLV), Mask) |
| 1335 | .addReg(ShiftAmt).addReg(MaskUpper); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1336 | BuildMI(BB, dl, TII->get(Mips::NOR), Mask2).addReg(Mips::ZERO).addReg(Mask); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1337 | BuildMI(BB, dl, TII->get(Mips::SLLV), Incr2).addReg(ShiftAmt).addReg(Incr); |
Bruno Cardoso Lopes | cada2d0 | 2011-05-31 20:25:26 +0000 | [diff] [blame] | 1338 | |
Akira Hatanaka | 0d7d0b5 | 2011-07-18 18:52:12 +0000 | [diff] [blame] | 1339 | // atomic.load.binop |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1340 | // loopMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1341 | // ll oldval,0(alignedaddr) |
| 1342 | // binop binopres,oldval,incr2 |
| 1343 | // and newval,binopres,mask |
| 1344 | // and maskedoldval0,oldval,mask2 |
| 1345 | // or storeval,maskedoldval0,newval |
| 1346 | // sc success,storeval,0(alignedaddr) |
| 1347 | // beq success,$0,loopMBB |
| 1348 | |
Akira Hatanaka | 0d7d0b5 | 2011-07-18 18:52:12 +0000 | [diff] [blame] | 1349 | // atomic.swap |
| 1350 | // loopMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1351 | // ll oldval,0(alignedaddr) |
Akira Hatanaka | 70564a9 | 2011-07-19 18:14:26 +0000 | [diff] [blame] | 1352 | // and newval,incr2,mask |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1353 | // and maskedoldval0,oldval,mask2 |
| 1354 | // or storeval,maskedoldval0,newval |
| 1355 | // sc success,storeval,0(alignedaddr) |
| 1356 | // beq success,$0,loopMBB |
Akira Hatanaka | 0d7d0b5 | 2011-07-18 18:52:12 +0000 | [diff] [blame] | 1357 | |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1358 | BB = loopMBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1359 | BuildMI(BB, dl, TII->get(LL), OldVal).addReg(AlignedAddr).addImm(0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1360 | if (Nand) { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1361 | // and andres, oldval, incr2 |
| 1362 | // nor binopres, $0, andres |
| 1363 | // and newval, binopres, mask |
| 1364 | BuildMI(BB, dl, TII->get(Mips::AND), AndRes).addReg(OldVal).addReg(Incr2); |
| 1365 | BuildMI(BB, dl, TII->get(Mips::NOR), BinOpRes) |
| 1366 | .addReg(Mips::ZERO).addReg(AndRes); |
| 1367 | BuildMI(BB, dl, TII->get(Mips::AND), NewVal).addReg(BinOpRes).addReg(Mask); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1368 | } else if (BinOpcode) { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1369 | // <binop> binopres, oldval, incr2 |
| 1370 | // and newval, binopres, mask |
| 1371 | BuildMI(BB, dl, TII->get(BinOpcode), BinOpRes).addReg(OldVal).addReg(Incr2); |
| 1372 | BuildMI(BB, dl, TII->get(Mips::AND), NewVal).addReg(BinOpRes).addReg(Mask); |
Akira Hatanaka | 70564a9 | 2011-07-19 18:14:26 +0000 | [diff] [blame] | 1373 | } else {// atomic.swap |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1374 | // and newval, incr2, mask |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1375 | BuildMI(BB, dl, TII->get(Mips::AND), NewVal).addReg(Incr2).addReg(Mask); |
Akira Hatanaka | 70564a9 | 2011-07-19 18:14:26 +0000 | [diff] [blame] | 1376 | } |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 1377 | |
Akira Hatanaka | bdd83fe | 2011-07-19 20:56:53 +0000 | [diff] [blame] | 1378 | BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal0) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1379 | .addReg(OldVal).addReg(Mask2); |
| 1380 | BuildMI(BB, dl, TII->get(Mips::OR), StoreVal) |
Akira Hatanaka | bdd83fe | 2011-07-19 20:56:53 +0000 | [diff] [blame] | 1381 | .addReg(MaskedOldVal0).addReg(NewVal); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1382 | BuildMI(BB, dl, TII->get(SC), Success) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1383 | .addReg(StoreVal).addReg(AlignedAddr).addImm(0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1384 | BuildMI(BB, dl, TII->get(Mips::BEQ)) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1385 | .addReg(Success).addReg(Mips::ZERO).addMBB(loopMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1386 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1387 | // sinkMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1388 | // and maskedoldval1,oldval,mask |
| 1389 | // srl srlres,maskedoldval1,shiftamt |
| 1390 | // sll sllres,srlres,24 |
| 1391 | // sra dest,sllres,24 |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1392 | BB = sinkMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1393 | int64_t ShiftImm = (Size == 1) ? 24 : 16; |
Akira Hatanaka | a308c67 | 2011-07-19 03:14:58 +0000 | [diff] [blame] | 1394 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1395 | BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal1) |
| 1396 | .addReg(OldVal).addReg(Mask); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1397 | BuildMI(BB, dl, TII->get(Mips::SRLV), SrlRes) |
| 1398 | .addReg(ShiftAmt).addReg(MaskedOldVal1); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1399 | BuildMI(BB, dl, TII->get(Mips::SLL), SllRes) |
| 1400 | .addReg(SrlRes).addImm(ShiftImm); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1401 | BuildMI(BB, dl, TII->get(Mips::SRA), Dest) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1402 | .addReg(SllRes).addImm(ShiftImm); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1403 | |
| 1404 | MI->eraseFromParent(); // The instruction is gone now. |
| 1405 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1406 | return exitMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1407 | } |
| 1408 | |
| 1409 | MachineBasicBlock * |
| 1410 | MipsTargetLowering::EmitAtomicCmpSwap(MachineInstr *MI, |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1411 | MachineBasicBlock *BB, |
| 1412 | unsigned Size) const { |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1413 | assert((Size == 4 || Size == 8) && "Unsupported size for EmitAtomicCmpSwap."); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1414 | |
| 1415 | MachineFunction *MF = BB->getParent(); |
| 1416 | MachineRegisterInfo &RegInfo = MF->getRegInfo(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1417 | const TargetRegisterClass *RC = getRegClassFor(MVT::getIntegerVT(Size * 8)); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1418 | const TargetInstrInfo *TII = getTargetMachine().getInstrInfo(); |
| 1419 | DebugLoc dl = MI->getDebugLoc(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1420 | unsigned LL, SC, ZERO, BNE, BEQ; |
| 1421 | |
| 1422 | if (Size == 4) { |
| 1423 | LL = IsN64 ? Mips::LL_P8 : Mips::LL; |
| 1424 | SC = IsN64 ? Mips::SC_P8 : Mips::SC; |
| 1425 | ZERO = Mips::ZERO; |
| 1426 | BNE = Mips::BNE; |
| 1427 | BEQ = Mips::BEQ; |
| 1428 | } |
| 1429 | else { |
| 1430 | LL = IsN64 ? Mips::LLD_P8 : Mips::LLD; |
| 1431 | SC = IsN64 ? Mips::SCD_P8 : Mips::SCD; |
| 1432 | ZERO = Mips::ZERO_64; |
| 1433 | BNE = Mips::BNE64; |
| 1434 | BEQ = Mips::BEQ64; |
| 1435 | } |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1436 | |
| 1437 | unsigned Dest = MI->getOperand(0).getReg(); |
| 1438 | unsigned Ptr = MI->getOperand(1).getReg(); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1439 | unsigned OldVal = MI->getOperand(2).getReg(); |
| 1440 | unsigned NewVal = MI->getOperand(3).getReg(); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1441 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1442 | unsigned Success = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1443 | |
| 1444 | // insert new blocks after the current block |
| 1445 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 1446 | MachineBasicBlock *loop1MBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1447 | MachineBasicBlock *loop2MBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1448 | MachineBasicBlock *exitMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1449 | MachineFunction::iterator It = BB; |
| 1450 | ++It; |
| 1451 | MF->insert(It, loop1MBB); |
| 1452 | MF->insert(It, loop2MBB); |
| 1453 | MF->insert(It, exitMBB); |
| 1454 | |
| 1455 | // Transfer the remainder of BB and its successor edges to exitMBB. |
| 1456 | exitMBB->splice(exitMBB->begin(), BB, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1457 | llvm::next(MachineBasicBlock::iterator(MI)), BB->end()); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1458 | exitMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 1459 | |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1460 | // thisMBB: |
| 1461 | // ... |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1462 | // fallthrough --> loop1MBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1463 | BB->addSuccessor(loop1MBB); |
Akira Hatanaka | 81b4411 | 2011-07-19 17:09:53 +0000 | [diff] [blame] | 1464 | loop1MBB->addSuccessor(exitMBB); |
| 1465 | loop1MBB->addSuccessor(loop2MBB); |
| 1466 | loop2MBB->addSuccessor(loop1MBB); |
| 1467 | loop2MBB->addSuccessor(exitMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1468 | |
| 1469 | // loop1MBB: |
| 1470 | // ll dest, 0(ptr) |
| 1471 | // bne dest, oldval, exitMBB |
| 1472 | BB = loop1MBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1473 | BuildMI(BB, dl, TII->get(LL), Dest).addReg(Ptr).addImm(0); |
| 1474 | BuildMI(BB, dl, TII->get(BNE)) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1475 | .addReg(Dest).addReg(OldVal).addMBB(exitMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1476 | |
| 1477 | // loop2MBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1478 | // sc success, newval, 0(ptr) |
| 1479 | // beq success, $0, loop1MBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1480 | BB = loop2MBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1481 | BuildMI(BB, dl, TII->get(SC), Success) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1482 | .addReg(NewVal).addReg(Ptr).addImm(0); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1483 | BuildMI(BB, dl, TII->get(BEQ)) |
| 1484 | .addReg(Success).addReg(ZERO).addMBB(loop1MBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1485 | |
| 1486 | MI->eraseFromParent(); // The instruction is gone now. |
| 1487 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1488 | return exitMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1489 | } |
| 1490 | |
| 1491 | MachineBasicBlock * |
| 1492 | MipsTargetLowering::EmitAtomicCmpSwapPartword(MachineInstr *MI, |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1493 | MachineBasicBlock *BB, |
| 1494 | unsigned Size) const { |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1495 | assert((Size == 1 || Size == 2) && |
| 1496 | "Unsupported size for EmitAtomicCmpSwapPartial."); |
| 1497 | |
| 1498 | MachineFunction *MF = BB->getParent(); |
| 1499 | MachineRegisterInfo &RegInfo = MF->getRegInfo(); |
| 1500 | const TargetRegisterClass *RC = getRegClassFor(MVT::i32); |
| 1501 | const TargetInstrInfo *TII = getTargetMachine().getInstrInfo(); |
| 1502 | DebugLoc dl = MI->getDebugLoc(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1503 | unsigned LL = IsN64 ? Mips::LL_P8 : Mips::LL; |
| 1504 | unsigned SC = IsN64 ? Mips::SC_P8 : Mips::SC; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1505 | |
| 1506 | unsigned Dest = MI->getOperand(0).getReg(); |
| 1507 | unsigned Ptr = MI->getOperand(1).getReg(); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1508 | unsigned CmpVal = MI->getOperand(2).getReg(); |
| 1509 | unsigned NewVal = MI->getOperand(3).getReg(); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1510 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1511 | unsigned AlignedAddr = RegInfo.createVirtualRegister(RC); |
| 1512 | unsigned ShiftAmt = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1513 | unsigned Mask = RegInfo.createVirtualRegister(RC); |
| 1514 | unsigned Mask2 = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1515 | unsigned ShiftedCmpVal = RegInfo.createVirtualRegister(RC); |
| 1516 | unsigned OldVal = RegInfo.createVirtualRegister(RC); |
| 1517 | unsigned MaskedOldVal0 = RegInfo.createVirtualRegister(RC); |
| 1518 | unsigned ShiftedNewVal = RegInfo.createVirtualRegister(RC); |
| 1519 | unsigned MaskLSB2 = RegInfo.createVirtualRegister(RC); |
| 1520 | unsigned PtrLSB2 = RegInfo.createVirtualRegister(RC); |
| 1521 | unsigned MaskUpper = RegInfo.createVirtualRegister(RC); |
| 1522 | unsigned MaskedCmpVal = RegInfo.createVirtualRegister(RC); |
| 1523 | unsigned MaskedNewVal = RegInfo.createVirtualRegister(RC); |
| 1524 | unsigned MaskedOldVal1 = RegInfo.createVirtualRegister(RC); |
| 1525 | unsigned StoreVal = RegInfo.createVirtualRegister(RC); |
| 1526 | unsigned SrlRes = RegInfo.createVirtualRegister(RC); |
| 1527 | unsigned SllRes = RegInfo.createVirtualRegister(RC); |
| 1528 | unsigned Success = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1529 | |
| 1530 | // insert new blocks after the current block |
| 1531 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 1532 | MachineBasicBlock *loop1MBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1533 | MachineBasicBlock *loop2MBB = MF->CreateMachineBasicBlock(LLVM_BB); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1534 | MachineBasicBlock *sinkMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1535 | MachineBasicBlock *exitMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1536 | MachineFunction::iterator It = BB; |
| 1537 | ++It; |
| 1538 | MF->insert(It, loop1MBB); |
| 1539 | MF->insert(It, loop2MBB); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1540 | MF->insert(It, sinkMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1541 | MF->insert(It, exitMBB); |
| 1542 | |
| 1543 | // Transfer the remainder of BB and its successor edges to exitMBB. |
| 1544 | exitMBB->splice(exitMBB->begin(), BB, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1545 | llvm::next(MachineBasicBlock::iterator(MI)), BB->end()); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1546 | exitMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 1547 | |
Akira Hatanaka | 81b4411 | 2011-07-19 17:09:53 +0000 | [diff] [blame] | 1548 | BB->addSuccessor(loop1MBB); |
| 1549 | loop1MBB->addSuccessor(sinkMBB); |
| 1550 | loop1MBB->addSuccessor(loop2MBB); |
| 1551 | loop2MBB->addSuccessor(loop1MBB); |
| 1552 | loop2MBB->addSuccessor(sinkMBB); |
| 1553 | sinkMBB->addSuccessor(exitMBB); |
| 1554 | |
Akira Hatanaka | 70564a9 | 2011-07-19 18:14:26 +0000 | [diff] [blame] | 1555 | // FIXME: computation of newval2 can be moved to loop2MBB. |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1556 | // thisMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1557 | // addiu masklsb2,$0,-4 # 0xfffffffc |
| 1558 | // and alignedaddr,ptr,masklsb2 |
| 1559 | // andi ptrlsb2,ptr,3 |
| 1560 | // sll shiftamt,ptrlsb2,3 |
| 1561 | // ori maskupper,$0,255 # 0xff |
| 1562 | // sll mask,maskupper,shiftamt |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1563 | // nor mask2,$0,mask |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1564 | // andi maskedcmpval,cmpval,255 |
| 1565 | // sll shiftedcmpval,maskedcmpval,shiftamt |
| 1566 | // andi maskednewval,newval,255 |
| 1567 | // sll shiftednewval,maskednewval,shiftamt |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1568 | int64_t MaskImm = (Size == 1) ? 255 : 65535; |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1569 | BuildMI(BB, dl, TII->get(Mips::ADDiu), MaskLSB2) |
| 1570 | .addReg(Mips::ZERO).addImm(-4); |
| 1571 | BuildMI(BB, dl, TII->get(Mips::AND), AlignedAddr) |
| 1572 | .addReg(Ptr).addReg(MaskLSB2); |
| 1573 | BuildMI(BB, dl, TII->get(Mips::ANDi), PtrLSB2).addReg(Ptr).addImm(3); |
| 1574 | BuildMI(BB, dl, TII->get(Mips::SLL), ShiftAmt).addReg(PtrLSB2).addImm(3); |
| 1575 | BuildMI(BB, dl, TII->get(Mips::ORi), MaskUpper) |
| 1576 | .addReg(Mips::ZERO).addImm(MaskImm); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1577 | BuildMI(BB, dl, TII->get(Mips::SLLV), Mask) |
| 1578 | .addReg(ShiftAmt).addReg(MaskUpper); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1579 | BuildMI(BB, dl, TII->get(Mips::NOR), Mask2).addReg(Mips::ZERO).addReg(Mask); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1580 | BuildMI(BB, dl, TII->get(Mips::ANDi), MaskedCmpVal) |
| 1581 | .addReg(CmpVal).addImm(MaskImm); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1582 | BuildMI(BB, dl, TII->get(Mips::SLLV), ShiftedCmpVal) |
| 1583 | .addReg(ShiftAmt).addReg(MaskedCmpVal); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1584 | BuildMI(BB, dl, TII->get(Mips::ANDi), MaskedNewVal) |
| 1585 | .addReg(NewVal).addImm(MaskImm); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1586 | BuildMI(BB, dl, TII->get(Mips::SLLV), ShiftedNewVal) |
| 1587 | .addReg(ShiftAmt).addReg(MaskedNewVal); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1588 | |
| 1589 | // loop1MBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1590 | // ll oldval,0(alginedaddr) |
| 1591 | // and maskedoldval0,oldval,mask |
| 1592 | // bne maskedoldval0,shiftedcmpval,sinkMBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1593 | BB = loop1MBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1594 | BuildMI(BB, dl, TII->get(LL), OldVal).addReg(AlignedAddr).addImm(0); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1595 | BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal0) |
| 1596 | .addReg(OldVal).addReg(Mask); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1597 | BuildMI(BB, dl, TII->get(Mips::BNE)) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1598 | .addReg(MaskedOldVal0).addReg(ShiftedCmpVal).addMBB(sinkMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1599 | |
| 1600 | // loop2MBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1601 | // and maskedoldval1,oldval,mask2 |
| 1602 | // or storeval,maskedoldval1,shiftednewval |
| 1603 | // sc success,storeval,0(alignedaddr) |
| 1604 | // beq success,$0,loop1MBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1605 | BB = loop2MBB; |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1606 | BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal1) |
| 1607 | .addReg(OldVal).addReg(Mask2); |
| 1608 | BuildMI(BB, dl, TII->get(Mips::OR), StoreVal) |
| 1609 | .addReg(MaskedOldVal1).addReg(ShiftedNewVal); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1610 | BuildMI(BB, dl, TII->get(SC), Success) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1611 | .addReg(StoreVal).addReg(AlignedAddr).addImm(0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1612 | BuildMI(BB, dl, TII->get(Mips::BEQ)) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1613 | .addReg(Success).addReg(Mips::ZERO).addMBB(loop1MBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1614 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1615 | // sinkMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1616 | // srl srlres,maskedoldval0,shiftamt |
| 1617 | // sll sllres,srlres,24 |
| 1618 | // sra dest,sllres,24 |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1619 | BB = sinkMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1620 | int64_t ShiftImm = (Size == 1) ? 24 : 16; |
Akira Hatanaka | a308c67 | 2011-07-19 03:14:58 +0000 | [diff] [blame] | 1621 | |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1622 | BuildMI(BB, dl, TII->get(Mips::SRLV), SrlRes) |
| 1623 | .addReg(ShiftAmt).addReg(MaskedOldVal0); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1624 | BuildMI(BB, dl, TII->get(Mips::SLL), SllRes) |
| 1625 | .addReg(SrlRes).addImm(ShiftImm); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1626 | BuildMI(BB, dl, TII->get(Mips::SRA), Dest) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1627 | .addReg(SllRes).addImm(ShiftImm); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1628 | |
| 1629 | MI->eraseFromParent(); // The instruction is gone now. |
| 1630 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1631 | return exitMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1632 | } |
| 1633 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1634 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 1635 | // Misc Lower Operation implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1636 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | d3bdf19 | 2009-05-27 17:23:44 +0000 | [diff] [blame] | 1637 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1638 | LowerBRCOND(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 1639 | { |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1640 | // The first operand is the chain, the second is the condition, the third is |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 1641 | // the block to branch to if the condition is true. |
| 1642 | SDValue Chain = Op.getOperand(0); |
| 1643 | SDValue Dest = Op.getOperand(2); |
Dale Johannesen | de06470 | 2009-02-06 21:50:26 +0000 | [diff] [blame] | 1644 | DebugLoc dl = Op.getDebugLoc(); |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 1645 | |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1646 | SDValue CondRes = CreateFPCmp(DAG, Op.getOperand(1)); |
| 1647 | |
Chris Lattner | 7a2bdde | 2011-04-15 05:18:47 +0000 | [diff] [blame] | 1648 | // Return if flag is not set by a floating point comparison. |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1649 | if (CondRes.getOpcode() != MipsISD::FPCmp) |
Bruno Cardoso Lopes | 4b877ca | 2008-07-30 17:06:13 +0000 | [diff] [blame] | 1650 | return Op; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1651 | |
Bruno Cardoso Lopes | 7728377 | 2008-07-31 18:31:28 +0000 | [diff] [blame] | 1652 | SDValue CCNode = CondRes.getOperand(2); |
Dan Gohman | f5aeb1a | 2008-09-12 16:56:44 +0000 | [diff] [blame] | 1653 | Mips::CondCode CC = |
| 1654 | (Mips::CondCode)cast<ConstantSDNode>(CCNode)->getZExtValue(); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1655 | SDValue BrCode = DAG.getConstant(GetFPBranchCodeFromCond(CC), MVT::i32); |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 1656 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1657 | return DAG.getNode(MipsISD::FPBrcond, dl, Op.getValueType(), Chain, BrCode, |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1658 | Dest, CondRes); |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 1659 | } |
| 1660 | |
| 1661 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1662 | LowerSELECT(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 1663 | { |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1664 | SDValue Cond = CreateFPCmp(DAG, Op.getOperand(0)); |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 1665 | |
Chris Lattner | 7a2bdde | 2011-04-15 05:18:47 +0000 | [diff] [blame] | 1666 | // Return if flag is not set by a floating point comparison. |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1667 | if (Cond.getOpcode() != MipsISD::FPCmp) |
| 1668 | return Op; |
Bruno Cardoso Lopes | 739e441 | 2008-08-13 07:13:40 +0000 | [diff] [blame] | 1669 | |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1670 | return CreateCMovFP(DAG, Cond, Op.getOperand(1), Op.getOperand(2), |
| 1671 | Op.getDebugLoc()); |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 1672 | } |
| 1673 | |
Akira Hatanaka | 3fef29d | 2012-07-11 19:32:27 +0000 | [diff] [blame] | 1674 | SDValue MipsTargetLowering:: |
| 1675 | LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const |
| 1676 | { |
| 1677 | DebugLoc DL = Op.getDebugLoc(); |
| 1678 | EVT Ty = Op.getOperand(0).getValueType(); |
| 1679 | SDValue Cond = DAG.getNode(ISD::SETCC, DL, getSetCCResultType(Ty), |
| 1680 | Op.getOperand(0), Op.getOperand(1), |
| 1681 | Op.getOperand(4)); |
| 1682 | |
| 1683 | return DAG.getNode(ISD::SELECT, DL, Op.getValueType(), Cond, Op.getOperand(2), |
| 1684 | Op.getOperand(3)); |
| 1685 | } |
| 1686 | |
Akira Hatanaka | 0a40c23 | 2012-03-09 23:46:03 +0000 | [diff] [blame] | 1687 | SDValue MipsTargetLowering::LowerSETCC(SDValue Op, SelectionDAG &DAG) const { |
| 1688 | SDValue Cond = CreateFPCmp(DAG, Op); |
| 1689 | |
| 1690 | assert(Cond.getOpcode() == MipsISD::FPCmp && |
| 1691 | "Floating point operand expected."); |
| 1692 | |
| 1693 | SDValue True = DAG.getConstant(1, MVT::i32); |
| 1694 | SDValue False = DAG.getConstant(0, MVT::i32); |
| 1695 | |
| 1696 | return CreateCMovFP(DAG, Cond, True, False, Op.getDebugLoc()); |
| 1697 | } |
| 1698 | |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1699 | SDValue MipsTargetLowering::LowerGlobalAddress(SDValue Op, |
| 1700 | SelectionDAG &DAG) const { |
Dale Johannesen | de06470 | 2009-02-06 21:50:26 +0000 | [diff] [blame] | 1701 | // FIXME there isn't actually debug info here |
Dale Johannesen | 33c960f | 2009-02-04 20:06:27 +0000 | [diff] [blame] | 1702 | DebugLoc dl = Op.getDebugLoc(); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 1703 | const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal(); |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1704 | |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1705 | if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64) { |
Chris Lattner | e3736f8 | 2009-08-13 05:41:27 +0000 | [diff] [blame] | 1706 | SDVTList VTs = DAG.getVTList(MVT::i32); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1707 | |
Akira Hatanaka | afc945b | 2012-09-12 23:27:55 +0000 | [diff] [blame] | 1708 | const MipsTargetObjectFile &TLOF = |
| 1709 | (const MipsTargetObjectFile&)getObjFileLowering(); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1710 | |
Chris Lattner | e3736f8 | 2009-08-13 05:41:27 +0000 | [diff] [blame] | 1711 | // %gp_rel relocation |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1712 | if (TLOF.IsGlobalInSmallSection(GV, getTargetMachine())) { |
| 1713 | SDValue GA = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0, |
Bruno Cardoso Lopes | c517cb0 | 2009-09-01 17:27:58 +0000 | [diff] [blame] | 1714 | MipsII::MO_GPREL); |
Chris Lattner | e3736f8 | 2009-08-13 05:41:27 +0000 | [diff] [blame] | 1715 | SDValue GPRelNode = DAG.getNode(MipsISD::GPRel, dl, VTs, &GA, 1); |
Akira Hatanaka | e7338cd | 2012-08-22 03:18:13 +0000 | [diff] [blame] | 1716 | SDValue GPReg = DAG.getRegister(Mips::GP, MVT::i32); |
| 1717 | return DAG.getNode(ISD::ADD, dl, MVT::i32, GPReg, GPRelNode); |
Chris Lattner | e3736f8 | 2009-08-13 05:41:27 +0000 | [diff] [blame] | 1718 | } |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1719 | // %hi/%lo relocation |
Akira Hatanaka | e2e436a | 2011-04-01 21:41:06 +0000 | [diff] [blame] | 1720 | SDValue GAHi = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0, |
| 1721 | MipsII::MO_ABS_HI); |
| 1722 | SDValue GALo = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0, |
| 1723 | MipsII::MO_ABS_LO); |
| 1724 | SDValue HiPart = DAG.getNode(MipsISD::Hi, dl, VTs, &GAHi, 1); |
| 1725 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, GALo); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 1726 | return DAG.getNode(ISD::ADD, dl, MVT::i32, HiPart, Lo); |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1727 | } |
| 1728 | |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1729 | EVT ValTy = Op.getValueType(); |
| 1730 | bool HasGotOfst = (GV->hasInternalLinkage() || |
| 1731 | (GV->hasLocalLinkage() && !isa<Function>(GV))); |
Akira Hatanaka | 56ce6b3 | 2012-04-04 22:16:36 +0000 | [diff] [blame] | 1732 | unsigned GotFlag = HasMips64 ? |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1733 | (HasGotOfst ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT_DISP) : |
Bruno Cardoso Lopes | e3d3572 | 2011-12-07 00:28:57 +0000 | [diff] [blame] | 1734 | (HasGotOfst ? MipsII::MO_GOT : MipsII::MO_GOT16); |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1735 | SDValue GA = DAG.getTargetGlobalAddress(GV, dl, ValTy, 0, GotFlag); |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 1736 | GA = DAG.getNode(MipsISD::Wrapper, dl, ValTy, GetGlobalReg(DAG, ValTy), GA); |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1737 | SDValue ResNode = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), GA, |
| 1738 | MachinePointerInfo(), false, false, false, 0); |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1739 | // On functions and global targets not internal linked only |
| 1740 | // a load from got/GP is necessary for PIC to work. |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1741 | if (!HasGotOfst) |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1742 | return ResNode; |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1743 | SDValue GALo = DAG.getTargetGlobalAddress(GV, dl, ValTy, 0, |
Akira Hatanaka | 56ce6b3 | 2012-04-04 22:16:36 +0000 | [diff] [blame] | 1744 | HasMips64 ? MipsII::MO_GOT_OFST : |
| 1745 | MipsII::MO_ABS_LO); |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1746 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, ValTy, GALo); |
| 1747 | return DAG.getNode(ISD::ADD, dl, ValTy, ResNode, Lo); |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1748 | } |
| 1749 | |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 1750 | SDValue MipsTargetLowering::LowerBlockAddress(SDValue Op, |
| 1751 | SelectionDAG &DAG) const { |
Akira Hatanaka | f48eb53 | 2011-04-25 17:10:45 +0000 | [diff] [blame] | 1752 | const BlockAddress *BA = cast<BlockAddressSDNode>(Op)->getBlockAddress(); |
| 1753 | // FIXME there isn't actually debug info here |
| 1754 | DebugLoc dl = Op.getDebugLoc(); |
| 1755 | |
Akira Hatanaka | 9b944a8 | 2011-11-16 22:42:10 +0000 | [diff] [blame] | 1756 | if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64) { |
Akira Hatanaka | f48eb53 | 2011-04-25 17:10:45 +0000 | [diff] [blame] | 1757 | // %hi/%lo relocation |
Reed Kotler | dfb8dbb | 2012-10-05 18:27:54 +0000 | [diff] [blame] | 1758 | SDValue BAHi = |
| 1759 | DAG.getTargetBlockAddress(BA, MVT::i32, 0, MipsII::MO_ABS_HI); |
| 1760 | SDValue BALo = |
| 1761 | DAG.getTargetBlockAddress(BA, MVT::i32, 0, MipsII::MO_ABS_LO); |
Akira Hatanaka | f48eb53 | 2011-04-25 17:10:45 +0000 | [diff] [blame] | 1762 | SDValue Hi = DAG.getNode(MipsISD::Hi, dl, MVT::i32, BAHi); |
| 1763 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, BALo); |
| 1764 | return DAG.getNode(ISD::ADD, dl, MVT::i32, Hi, Lo); |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 1765 | } |
Akira Hatanaka | f48eb53 | 2011-04-25 17:10:45 +0000 | [diff] [blame] | 1766 | |
Akira Hatanaka | 9b944a8 | 2011-11-16 22:42:10 +0000 | [diff] [blame] | 1767 | EVT ValTy = Op.getValueType(); |
Akira Hatanaka | 03d830e | 2012-04-04 18:22:53 +0000 | [diff] [blame] | 1768 | unsigned GOTFlag = HasMips64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT; |
| 1769 | unsigned OFSTFlag = HasMips64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO; |
Michael Liao | 6c7ccaa | 2012-09-12 21:43:09 +0000 | [diff] [blame] | 1770 | SDValue BAGOTOffset = DAG.getTargetBlockAddress(BA, ValTy, 0, GOTFlag); |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 1771 | BAGOTOffset = DAG.getNode(MipsISD::Wrapper, dl, ValTy, |
| 1772 | GetGlobalReg(DAG, ValTy), BAGOTOffset); |
Michael Liao | 6c7ccaa | 2012-09-12 21:43:09 +0000 | [diff] [blame] | 1773 | SDValue BALOOffset = DAG.getTargetBlockAddress(BA, ValTy, 0, OFSTFlag); |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1774 | SDValue Load = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), BAGOTOffset, |
Pete Cooper | d752e0f | 2011-11-08 18:42:53 +0000 | [diff] [blame] | 1775 | MachinePointerInfo(), false, false, false, 0); |
Akira Hatanaka | 9b944a8 | 2011-11-16 22:42:10 +0000 | [diff] [blame] | 1776 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, ValTy, BALOOffset); |
| 1777 | return DAG.getNode(ISD::ADD, dl, ValTy, Load, Lo); |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 1778 | } |
| 1779 | |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1780 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1781 | LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1782 | { |
Akira Hatanaka | 3faac0a | 2011-12-14 18:26:41 +0000 | [diff] [blame] | 1783 | // If the relocation model is PIC, use the General Dynamic TLS Model or |
| 1784 | // Local Dynamic TLS model, otherwise use the Initial Exec or |
| 1785 | // Local Exec TLS Model. |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1786 | |
| 1787 | GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(Op); |
| 1788 | DebugLoc dl = GA->getDebugLoc(); |
| 1789 | const GlobalValue *GV = GA->getGlobal(); |
| 1790 | EVT PtrVT = getPointerTy(); |
| 1791 | |
Hans Wennborg | fd5abd5 | 2012-05-04 09:40:39 +0000 | [diff] [blame] | 1792 | TLSModel::Model model = getTargetMachine().getTLSModel(GV); |
| 1793 | |
| 1794 | if (model == TLSModel::GeneralDynamic || model == TLSModel::LocalDynamic) { |
Hans Wennborg | 70a07c7 | 2012-06-04 14:02:08 +0000 | [diff] [blame] | 1795 | // General Dynamic and Local Dynamic TLS Model. |
| 1796 | unsigned Flag = (model == TLSModel::LocalDynamic) ? MipsII::MO_TLSLDM |
| 1797 | : MipsII::MO_TLSGD; |
| 1798 | |
Akira Hatanaka | 3faac0a | 2011-12-14 18:26:41 +0000 | [diff] [blame] | 1799 | SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, Flag); |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 1800 | SDValue Argument = DAG.getNode(MipsISD::Wrapper, dl, PtrVT, |
| 1801 | GetGlobalReg(DAG, PtrVT), TGA); |
Akira Hatanaka | 7a7194b | 2011-12-08 21:05:38 +0000 | [diff] [blame] | 1802 | unsigned PtrSize = PtrVT.getSizeInBits(); |
| 1803 | IntegerType *PtrTy = Type::getIntNTy(*DAG.getContext(), PtrSize); |
| 1804 | |
Benjamin Kramer | 5eccf67 | 2011-12-11 12:21:34 +0000 | [diff] [blame] | 1805 | SDValue TlsGetAddr = DAG.getExternalSymbol("__tls_get_addr", PtrVT); |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1806 | |
| 1807 | ArgListTy Args; |
| 1808 | ArgListEntry Entry; |
| 1809 | Entry.Node = Argument; |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1810 | Entry.Ty = PtrTy; |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1811 | Args.push_back(Entry); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 1812 | |
Justin Holewinski | d2ea0e1 | 2012-05-25 16:35:28 +0000 | [diff] [blame] | 1813 | TargetLowering::CallLoweringInfo CLI(DAG.getEntryNode(), PtrTy, |
Evan Cheng | 4bfcd4a | 2012-02-28 18:51:51 +0000 | [diff] [blame] | 1814 | false, false, false, false, 0, CallingConv::C, |
| 1815 | /*isTailCall=*/false, /*doesNotRet=*/false, |
| 1816 | /*isReturnValueUsed=*/true, |
Akira Hatanaka | 7a7194b | 2011-12-08 21:05:38 +0000 | [diff] [blame] | 1817 | TlsGetAddr, Args, DAG, dl); |
Justin Holewinski | d2ea0e1 | 2012-05-25 16:35:28 +0000 | [diff] [blame] | 1818 | std::pair<SDValue, SDValue> CallResult = LowerCallTo(CLI); |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1819 | |
Akira Hatanaka | 3faac0a | 2011-12-14 18:26:41 +0000 | [diff] [blame] | 1820 | SDValue Ret = CallResult.first; |
| 1821 | |
Hans Wennborg | fd5abd5 | 2012-05-04 09:40:39 +0000 | [diff] [blame] | 1822 | if (model != TLSModel::LocalDynamic) |
Akira Hatanaka | 3faac0a | 2011-12-14 18:26:41 +0000 | [diff] [blame] | 1823 | return Ret; |
| 1824 | |
| 1825 | SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
| 1826 | MipsII::MO_DTPREL_HI); |
| 1827 | SDValue Hi = DAG.getNode(MipsISD::Hi, dl, PtrVT, TGAHi); |
| 1828 | SDValue TGALo = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
| 1829 | MipsII::MO_DTPREL_LO); |
| 1830 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, TGALo); |
| 1831 | SDValue Add = DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Ret); |
| 1832 | return DAG.getNode(ISD::ADD, dl, PtrVT, Add, Lo); |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1833 | } |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1834 | |
| 1835 | SDValue Offset; |
Hans Wennborg | fd5abd5 | 2012-05-04 09:40:39 +0000 | [diff] [blame] | 1836 | if (model == TLSModel::InitialExec) { |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1837 | // Initial Exec TLS Model |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1838 | SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1839 | MipsII::MO_GOTTPREL); |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 1840 | TGA = DAG.getNode(MipsISD::Wrapper, dl, PtrVT, GetGlobalReg(DAG, PtrVT), |
| 1841 | TGA); |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1842 | Offset = DAG.getLoad(PtrVT, dl, |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1843 | DAG.getEntryNode(), TGA, MachinePointerInfo(), |
Pete Cooper | d752e0f | 2011-11-08 18:42:53 +0000 | [diff] [blame] | 1844 | false, false, false, 0); |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1845 | } else { |
| 1846 | // Local Exec TLS Model |
Hans Wennborg | fd5abd5 | 2012-05-04 09:40:39 +0000 | [diff] [blame] | 1847 | assert(model == TLSModel::LocalExec); |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1848 | SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1849 | MipsII::MO_TPREL_HI); |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1850 | SDValue TGALo = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1851 | MipsII::MO_TPREL_LO); |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1852 | SDValue Hi = DAG.getNode(MipsISD::Hi, dl, PtrVT, TGAHi); |
| 1853 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, TGALo); |
| 1854 | Offset = DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Lo); |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1855 | } |
| 1856 | |
| 1857 | SDValue ThreadPointer = DAG.getNode(MipsISD::ThreadPointer, dl, PtrVT); |
| 1858 | return DAG.getNode(ISD::ADD, dl, PtrVT, ThreadPointer, Offset); |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1859 | } |
| 1860 | |
| 1861 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1862 | LowerJumpTable(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 753a987 | 2007-11-12 19:49:57 +0000 | [diff] [blame] | 1863 | { |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1864 | SDValue HiPart, JTI, JTILo; |
Dale Johannesen | de06470 | 2009-02-06 21:50:26 +0000 | [diff] [blame] | 1865 | // FIXME there isn't actually debug info here |
Dale Johannesen | 33c960f | 2009-02-04 20:06:27 +0000 | [diff] [blame] | 1866 | DebugLoc dl = Op.getDebugLoc(); |
Bruno Cardoso Lopes | c517cb0 | 2009-09-01 17:27:58 +0000 | [diff] [blame] | 1867 | bool IsPIC = getTargetMachine().getRelocationModel() == Reloc::PIC_; |
Owen Anderson | e50ed30 | 2009-08-10 22:56:29 +0000 | [diff] [blame] | 1868 | EVT PtrVT = Op.getValueType(); |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1869 | JumpTableSDNode *JT = cast<JumpTableSDNode>(Op); |
Bruno Cardoso Lopes | 753a987 | 2007-11-12 19:49:57 +0000 | [diff] [blame] | 1870 | |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1871 | if (!IsPIC && !IsN64) { |
| 1872 | JTI = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, MipsII::MO_ABS_HI); |
| 1873 | HiPart = DAG.getNode(MipsISD::Hi, dl, PtrVT, JTI); |
| 1874 | JTILo = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, MipsII::MO_ABS_LO); |
Akira Hatanaka | 342837d | 2011-05-28 01:07:07 +0000 | [diff] [blame] | 1875 | } else {// Emit Load from Global Pointer |
Akira Hatanaka | c75ceb7 | 2012-04-04 18:31:32 +0000 | [diff] [blame] | 1876 | unsigned GOTFlag = HasMips64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT; |
| 1877 | unsigned OfstFlag = HasMips64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO; |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1878 | JTI = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, GOTFlag); |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 1879 | JTI = DAG.getNode(MipsISD::Wrapper, dl, PtrVT, GetGlobalReg(DAG, PtrVT), |
| 1880 | JTI); |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1881 | HiPart = DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), JTI, |
| 1882 | MachinePointerInfo(), false, false, false, 0); |
| 1883 | JTILo = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, OfstFlag); |
Akira Hatanaka | 342837d | 2011-05-28 01:07:07 +0000 | [diff] [blame] | 1884 | } |
Bruno Cardoso Lopes | 753a987 | 2007-11-12 19:49:57 +0000 | [diff] [blame] | 1885 | |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1886 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, JTILo); |
| 1887 | return DAG.getNode(ISD::ADD, dl, PtrVT, HiPart, Lo); |
Bruno Cardoso Lopes | 753a987 | 2007-11-12 19:49:57 +0000 | [diff] [blame] | 1888 | } |
| 1889 | |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 1890 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1891 | LowerConstantPool(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 1892 | { |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 1893 | SDValue ResNode; |
Bruno Cardoso Lopes | 92e87f2 | 2008-07-23 16:01:50 +0000 | [diff] [blame] | 1894 | ConstantPoolSDNode *N = cast<ConstantPoolSDNode>(Op); |
Dan Gohman | 46510a7 | 2010-04-15 01:51:59 +0000 | [diff] [blame] | 1895 | const Constant *C = N->getConstVal(); |
Dale Johannesen | de06470 | 2009-02-06 21:50:26 +0000 | [diff] [blame] | 1896 | // FIXME there isn't actually debug info here |
| 1897 | DebugLoc dl = Op.getDebugLoc(); |
Bruno Cardoso Lopes | 92e87f2 | 2008-07-23 16:01:50 +0000 | [diff] [blame] | 1898 | |
| 1899 | // gp_rel relocation |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1900 | // FIXME: we should reference the constant pool using small data sections, |
Chris Lattner | 7a2bdde | 2011-04-15 05:18:47 +0000 | [diff] [blame] | 1901 | // but the asm printer currently doesn't support this feature without |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1902 | // hacking it. This feature should come soon so we can uncomment the |
Bruno Cardoso Lopes | f33bc43 | 2008-07-28 19:26:25 +0000 | [diff] [blame] | 1903 | // stuff below. |
Eli Friedman | e2c7408 | 2009-08-03 02:22:28 +0000 | [diff] [blame] | 1904 | //if (IsInSmallSection(C->getType())) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 1905 | // SDValue GPRelNode = DAG.getNode(MipsISD::GPRel, MVT::i32, CP); |
| 1906 | // SDValue GOT = DAG.getGLOBAL_OFFSET_TABLE(MVT::i32); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1907 | // ResNode = DAG.getNode(ISD::ADD, MVT::i32, GOT, GPRelNode); |
Bruno Cardoso Lopes | d71cebf | 2009-11-25 12:17:58 +0000 | [diff] [blame] | 1908 | |
Akira Hatanaka | 13daee3 | 2012-03-27 02:55:31 +0000 | [diff] [blame] | 1909 | if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64) { |
Akira Hatanaka | e2e436a | 2011-04-01 21:41:06 +0000 | [diff] [blame] | 1910 | SDValue CPHi = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment(), |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1911 | N->getOffset(), MipsII::MO_ABS_HI); |
Akira Hatanaka | e2e436a | 2011-04-01 21:41:06 +0000 | [diff] [blame] | 1912 | SDValue CPLo = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment(), |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1913 | N->getOffset(), MipsII::MO_ABS_LO); |
Akira Hatanaka | e2e436a | 2011-04-01 21:41:06 +0000 | [diff] [blame] | 1914 | SDValue HiPart = DAG.getNode(MipsISD::Hi, dl, MVT::i32, CPHi); |
| 1915 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, CPLo); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 1916 | ResNode = DAG.getNode(ISD::ADD, dl, MVT::i32, HiPart, Lo); |
Bruno Cardoso Lopes | d71cebf | 2009-11-25 12:17:58 +0000 | [diff] [blame] | 1917 | } else { |
Akira Hatanaka | 620db89 | 2011-11-16 22:44:38 +0000 | [diff] [blame] | 1918 | EVT ValTy = Op.getValueType(); |
Akira Hatanaka | 86a2733 | 2012-04-04 18:26:12 +0000 | [diff] [blame] | 1919 | unsigned GOTFlag = HasMips64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT; |
| 1920 | unsigned OFSTFlag = HasMips64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO; |
Akira Hatanaka | 620db89 | 2011-11-16 22:44:38 +0000 | [diff] [blame] | 1921 | SDValue CP = DAG.getTargetConstantPool(C, ValTy, N->getAlignment(), |
| 1922 | N->getOffset(), GOTFlag); |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 1923 | CP = DAG.getNode(MipsISD::Wrapper, dl, ValTy, GetGlobalReg(DAG, ValTy), CP); |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1924 | SDValue Load = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), CP, |
| 1925 | MachinePointerInfo::getConstantPool(), false, |
| 1926 | false, false, 0); |
Akira Hatanaka | 620db89 | 2011-11-16 22:44:38 +0000 | [diff] [blame] | 1927 | SDValue CPLo = DAG.getTargetConstantPool(C, ValTy, N->getAlignment(), |
| 1928 | N->getOffset(), OFSTFlag); |
| 1929 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, ValTy, CPLo); |
| 1930 | ResNode = DAG.getNode(ISD::ADD, dl, ValTy, Load, Lo); |
Bruno Cardoso Lopes | d71cebf | 2009-11-25 12:17:58 +0000 | [diff] [blame] | 1931 | } |
Bruno Cardoso Lopes | 92e87f2 | 2008-07-23 16:01:50 +0000 | [diff] [blame] | 1932 | |
| 1933 | return ResNode; |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 1934 | } |
| 1935 | |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1936 | SDValue MipsTargetLowering::LowerVASTART(SDValue Op, SelectionDAG &DAG) const { |
Dan Gohman | 1e93df6 | 2010-04-17 14:41:14 +0000 | [diff] [blame] | 1937 | MachineFunction &MF = DAG.getMachineFunction(); |
| 1938 | MipsFunctionInfo *FuncInfo = MF.getInfo<MipsFunctionInfo>(); |
| 1939 | |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 1940 | DebugLoc dl = Op.getDebugLoc(); |
Dan Gohman | 1e93df6 | 2010-04-17 14:41:14 +0000 | [diff] [blame] | 1941 | SDValue FI = DAG.getFrameIndex(FuncInfo->getVarArgsFrameIndex(), |
| 1942 | getPointerTy()); |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 1943 | |
| 1944 | // vastart just stores the address of the VarArgsFrameIndex slot into the |
| 1945 | // memory location argument. |
| 1946 | const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue(); |
Chris Lattner | 8026a9d | 2010-09-21 17:50:43 +0000 | [diff] [blame] | 1947 | return DAG.getStore(Op.getOperand(0), dl, FI, Op.getOperand(1), |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1948 | MachinePointerInfo(SV), false, false, 0); |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 1949 | } |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 1950 | |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 1951 | static SDValue LowerFCOPYSIGN32(SDValue Op, SelectionDAG &DAG, bool HasR2) { |
| 1952 | EVT TyX = Op.getOperand(0).getValueType(); |
| 1953 | EVT TyY = Op.getOperand(1).getValueType(); |
| 1954 | SDValue Const1 = DAG.getConstant(1, MVT::i32); |
| 1955 | SDValue Const31 = DAG.getConstant(31, MVT::i32); |
| 1956 | DebugLoc DL = Op.getDebugLoc(); |
| 1957 | SDValue Res; |
| 1958 | |
| 1959 | // If operand is of type f64, extract the upper 32-bit. Otherwise, bitcast it |
| 1960 | // to i32. |
| 1961 | SDValue X = (TyX == MVT::f32) ? |
| 1962 | DAG.getNode(ISD::BITCAST, DL, MVT::i32, Op.getOperand(0)) : |
| 1963 | DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32, Op.getOperand(0), |
| 1964 | Const1); |
| 1965 | SDValue Y = (TyY == MVT::f32) ? |
| 1966 | DAG.getNode(ISD::BITCAST, DL, MVT::i32, Op.getOperand(1)) : |
| 1967 | DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32, Op.getOperand(1), |
| 1968 | Const1); |
| 1969 | |
| 1970 | if (HasR2) { |
| 1971 | // ext E, Y, 31, 1 ; extract bit31 of Y |
| 1972 | // ins X, E, 31, 1 ; insert extracted bit at bit31 of X |
| 1973 | SDValue E = DAG.getNode(MipsISD::Ext, DL, MVT::i32, Y, Const31, Const1); |
| 1974 | Res = DAG.getNode(MipsISD::Ins, DL, MVT::i32, E, Const31, Const1, X); |
| 1975 | } else { |
| 1976 | // sll SllX, X, 1 |
| 1977 | // srl SrlX, SllX, 1 |
| 1978 | // srl SrlY, Y, 31 |
| 1979 | // sll SllY, SrlX, 31 |
| 1980 | // or Or, SrlX, SllY |
| 1981 | SDValue SllX = DAG.getNode(ISD::SHL, DL, MVT::i32, X, Const1); |
| 1982 | SDValue SrlX = DAG.getNode(ISD::SRL, DL, MVT::i32, SllX, Const1); |
| 1983 | SDValue SrlY = DAG.getNode(ISD::SRL, DL, MVT::i32, Y, Const31); |
| 1984 | SDValue SllY = DAG.getNode(ISD::SHL, DL, MVT::i32, SrlY, Const31); |
| 1985 | Res = DAG.getNode(ISD::OR, DL, MVT::i32, SrlX, SllY); |
| 1986 | } |
| 1987 | |
| 1988 | if (TyX == MVT::f32) |
| 1989 | return DAG.getNode(ISD::BITCAST, DL, Op.getOperand(0).getValueType(), Res); |
| 1990 | |
| 1991 | SDValue LowX = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32, |
| 1992 | Op.getOperand(0), DAG.getConstant(0, MVT::i32)); |
| 1993 | return DAG.getNode(MipsISD::BuildPairF64, DL, MVT::f64, LowX, Res); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1994 | } |
| 1995 | |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 1996 | static SDValue LowerFCOPYSIGN64(SDValue Op, SelectionDAG &DAG, bool HasR2) { |
| 1997 | unsigned WidthX = Op.getOperand(0).getValueSizeInBits(); |
| 1998 | unsigned WidthY = Op.getOperand(1).getValueSizeInBits(); |
| 1999 | EVT TyX = MVT::getIntegerVT(WidthX), TyY = MVT::getIntegerVT(WidthY); |
| 2000 | SDValue Const1 = DAG.getConstant(1, MVT::i32); |
| 2001 | DebugLoc DL = Op.getDebugLoc(); |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 2002 | |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 2003 | // Bitcast to integer nodes. |
| 2004 | SDValue X = DAG.getNode(ISD::BITCAST, DL, TyX, Op.getOperand(0)); |
| 2005 | SDValue Y = DAG.getNode(ISD::BITCAST, DL, TyY, Op.getOperand(1)); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 2006 | |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 2007 | if (HasR2) { |
| 2008 | // ext E, Y, width(Y) - 1, 1 ; extract bit width(Y)-1 of Y |
| 2009 | // ins X, E, width(X) - 1, 1 ; insert extracted bit at bit width(X)-1 of X |
| 2010 | SDValue E = DAG.getNode(MipsISD::Ext, DL, TyY, Y, |
| 2011 | DAG.getConstant(WidthY - 1, MVT::i32), Const1); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 2012 | |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 2013 | if (WidthX > WidthY) |
| 2014 | E = DAG.getNode(ISD::ZERO_EXTEND, DL, TyX, E); |
| 2015 | else if (WidthY > WidthX) |
| 2016 | E = DAG.getNode(ISD::TRUNCATE, DL, TyX, E); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 2017 | |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 2018 | SDValue I = DAG.getNode(MipsISD::Ins, DL, TyX, E, |
| 2019 | DAG.getConstant(WidthX - 1, MVT::i32), Const1, X); |
| 2020 | return DAG.getNode(ISD::BITCAST, DL, Op.getOperand(0).getValueType(), I); |
| 2021 | } |
| 2022 | |
| 2023 | // (d)sll SllX, X, 1 |
| 2024 | // (d)srl SrlX, SllX, 1 |
| 2025 | // (d)srl SrlY, Y, width(Y)-1 |
| 2026 | // (d)sll SllY, SrlX, width(Y)-1 |
| 2027 | // or Or, SrlX, SllY |
| 2028 | SDValue SllX = DAG.getNode(ISD::SHL, DL, TyX, X, Const1); |
| 2029 | SDValue SrlX = DAG.getNode(ISD::SRL, DL, TyX, SllX, Const1); |
| 2030 | SDValue SrlY = DAG.getNode(ISD::SRL, DL, TyY, Y, |
| 2031 | DAG.getConstant(WidthY - 1, MVT::i32)); |
| 2032 | |
| 2033 | if (WidthX > WidthY) |
| 2034 | SrlY = DAG.getNode(ISD::ZERO_EXTEND, DL, TyX, SrlY); |
| 2035 | else if (WidthY > WidthX) |
| 2036 | SrlY = DAG.getNode(ISD::TRUNCATE, DL, TyX, SrlY); |
| 2037 | |
| 2038 | SDValue SllY = DAG.getNode(ISD::SHL, DL, TyX, SrlY, |
| 2039 | DAG.getConstant(WidthX - 1, MVT::i32)); |
| 2040 | SDValue Or = DAG.getNode(ISD::OR, DL, TyX, SrlX, SllY); |
| 2041 | return DAG.getNode(ISD::BITCAST, DL, Op.getOperand(0).getValueType(), Or); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 2042 | } |
| 2043 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2044 | SDValue |
| 2045 | MipsTargetLowering::LowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const { |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 2046 | if (Subtarget->hasMips64()) |
| 2047 | return LowerFCOPYSIGN64(Op, DAG, Subtarget->hasMips32r2()); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 2048 | |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 2049 | return LowerFCOPYSIGN32(Op, DAG, Subtarget->hasMips32r2()); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 2050 | } |
| 2051 | |
Akira Hatanaka | c12a6e6 | 2012-04-11 22:49:04 +0000 | [diff] [blame] | 2052 | static SDValue LowerFABS32(SDValue Op, SelectionDAG &DAG, bool HasR2) { |
| 2053 | SDValue Res, Const1 = DAG.getConstant(1, MVT::i32); |
| 2054 | DebugLoc DL = Op.getDebugLoc(); |
| 2055 | |
| 2056 | // If operand is of type f64, extract the upper 32-bit. Otherwise, bitcast it |
| 2057 | // to i32. |
| 2058 | SDValue X = (Op.getValueType() == MVT::f32) ? |
| 2059 | DAG.getNode(ISD::BITCAST, DL, MVT::i32, Op.getOperand(0)) : |
| 2060 | DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32, Op.getOperand(0), |
| 2061 | Const1); |
| 2062 | |
| 2063 | // Clear MSB. |
| 2064 | if (HasR2) |
| 2065 | Res = DAG.getNode(MipsISD::Ins, DL, MVT::i32, |
| 2066 | DAG.getRegister(Mips::ZERO, MVT::i32), |
| 2067 | DAG.getConstant(31, MVT::i32), Const1, X); |
| 2068 | else { |
| 2069 | SDValue SllX = DAG.getNode(ISD::SHL, DL, MVT::i32, X, Const1); |
| 2070 | Res = DAG.getNode(ISD::SRL, DL, MVT::i32, SllX, Const1); |
| 2071 | } |
| 2072 | |
| 2073 | if (Op.getValueType() == MVT::f32) |
| 2074 | return DAG.getNode(ISD::BITCAST, DL, MVT::f32, Res); |
| 2075 | |
| 2076 | SDValue LowX = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32, |
| 2077 | Op.getOperand(0), DAG.getConstant(0, MVT::i32)); |
| 2078 | return DAG.getNode(MipsISD::BuildPairF64, DL, MVT::f64, LowX, Res); |
| 2079 | } |
| 2080 | |
| 2081 | static SDValue LowerFABS64(SDValue Op, SelectionDAG &DAG, bool HasR2) { |
| 2082 | SDValue Res, Const1 = DAG.getConstant(1, MVT::i32); |
| 2083 | DebugLoc DL = Op.getDebugLoc(); |
| 2084 | |
| 2085 | // Bitcast to integer node. |
| 2086 | SDValue X = DAG.getNode(ISD::BITCAST, DL, MVT::i64, Op.getOperand(0)); |
| 2087 | |
| 2088 | // Clear MSB. |
| 2089 | if (HasR2) |
| 2090 | Res = DAG.getNode(MipsISD::Ins, DL, MVT::i64, |
| 2091 | DAG.getRegister(Mips::ZERO_64, MVT::i64), |
| 2092 | DAG.getConstant(63, MVT::i32), Const1, X); |
| 2093 | else { |
| 2094 | SDValue SllX = DAG.getNode(ISD::SHL, DL, MVT::i64, X, Const1); |
| 2095 | Res = DAG.getNode(ISD::SRL, DL, MVT::i64, SllX, Const1); |
| 2096 | } |
| 2097 | |
| 2098 | return DAG.getNode(ISD::BITCAST, DL, MVT::f64, Res); |
| 2099 | } |
| 2100 | |
| 2101 | SDValue |
| 2102 | MipsTargetLowering::LowerFABS(SDValue Op, SelectionDAG &DAG) const { |
| 2103 | if (Subtarget->hasMips64() && (Op.getValueType() == MVT::f64)) |
| 2104 | return LowerFABS64(Op, DAG, Subtarget->hasMips32r2()); |
| 2105 | |
| 2106 | return LowerFABS32(Op, DAG, Subtarget->hasMips32r2()); |
| 2107 | } |
| 2108 | |
Akira Hatanaka | 2e59147 | 2011-06-02 00:24:44 +0000 | [diff] [blame] | 2109 | SDValue MipsTargetLowering:: |
| 2110 | LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const { |
Bruno Cardoso Lopes | e0b5cfc | 2011-06-16 00:40:02 +0000 | [diff] [blame] | 2111 | // check the depth |
| 2112 | assert((cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue() == 0) && |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 2113 | "Frame address can only be determined for current frame."); |
Akira Hatanaka | 2e59147 | 2011-06-02 00:24:44 +0000 | [diff] [blame] | 2114 | |
| 2115 | MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo(); |
| 2116 | MFI->setFrameAddressIsTaken(true); |
| 2117 | EVT VT = Op.getValueType(); |
| 2118 | DebugLoc dl = Op.getDebugLoc(); |
Akira Hatanaka | 46ac439 | 2011-11-11 04:11:56 +0000 | [diff] [blame] | 2119 | SDValue FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, |
| 2120 | IsN64 ? Mips::FP_64 : Mips::FP, VT); |
Akira Hatanaka | 2e59147 | 2011-06-02 00:24:44 +0000 | [diff] [blame] | 2121 | return FrameAddr; |
| 2122 | } |
| 2123 | |
Akira Hatanaka | ba584fe | 2012-07-11 00:53:32 +0000 | [diff] [blame] | 2124 | SDValue MipsTargetLowering::LowerRETURNADDR(SDValue Op, |
| 2125 | SelectionDAG &DAG) const { |
| 2126 | // check the depth |
| 2127 | assert((cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue() == 0) && |
| 2128 | "Return address can be determined only for current frame."); |
| 2129 | |
| 2130 | MachineFunction &MF = DAG.getMachineFunction(); |
| 2131 | MachineFrameInfo *MFI = MF.getFrameInfo(); |
| 2132 | EVT VT = Op.getValueType(); |
| 2133 | unsigned RA = IsN64 ? Mips::RA_64 : Mips::RA; |
| 2134 | MFI->setReturnAddressIsTaken(true); |
| 2135 | |
| 2136 | // Return RA, which contains the return address. Mark it an implicit live-in. |
| 2137 | unsigned Reg = MF.addLiveIn(RA, getRegClassFor(VT)); |
| 2138 | return DAG.getCopyFromReg(DAG.getEntryNode(), Op.getDebugLoc(), Reg, VT); |
| 2139 | } |
| 2140 | |
Akira Hatanaka | db54826 | 2011-07-19 23:30:50 +0000 | [diff] [blame] | 2141 | // TODO: set SType according to the desired memory barrier behavior. |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2142 | SDValue |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 2143 | MipsTargetLowering::LowerMEMBARRIER(SDValue Op, SelectionDAG &DAG) const { |
Akira Hatanaka | db54826 | 2011-07-19 23:30:50 +0000 | [diff] [blame] | 2144 | unsigned SType = 0; |
| 2145 | DebugLoc dl = Op.getDebugLoc(); |
| 2146 | return DAG.getNode(MipsISD::Sync, dl, MVT::Other, Op.getOperand(0), |
| 2147 | DAG.getConstant(SType, MVT::i32)); |
| 2148 | } |
| 2149 | |
Eli Friedman | 1464846 | 2011-07-27 22:21:52 +0000 | [diff] [blame] | 2150 | SDValue MipsTargetLowering::LowerATOMIC_FENCE(SDValue Op, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 2151 | SelectionDAG &DAG) const { |
Eli Friedman | 1464846 | 2011-07-27 22:21:52 +0000 | [diff] [blame] | 2152 | // FIXME: Need pseudo-fence for 'singlethread' fences |
| 2153 | // FIXME: Set SType for weaker fences where supported/appropriate. |
| 2154 | unsigned SType = 0; |
| 2155 | DebugLoc dl = Op.getDebugLoc(); |
| 2156 | return DAG.getNode(MipsISD::Sync, dl, MVT::Other, Op.getOperand(0), |
| 2157 | DAG.getConstant(SType, MVT::i32)); |
| 2158 | } |
| 2159 | |
Akira Hatanaka | a284acb | 2012-05-09 00:55:21 +0000 | [diff] [blame] | 2160 | SDValue MipsTargetLowering::LowerShiftLeftParts(SDValue Op, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 2161 | SelectionDAG &DAG) const { |
Akira Hatanaka | a284acb | 2012-05-09 00:55:21 +0000 | [diff] [blame] | 2162 | DebugLoc DL = Op.getDebugLoc(); |
| 2163 | SDValue Lo = Op.getOperand(0), Hi = Op.getOperand(1); |
| 2164 | SDValue Shamt = Op.getOperand(2); |
| 2165 | |
| 2166 | // if shamt < 32: |
| 2167 | // lo = (shl lo, shamt) |
| 2168 | // hi = (or (shl hi, shamt) (srl (srl lo, 1), ~shamt)) |
| 2169 | // else: |
| 2170 | // lo = 0 |
| 2171 | // hi = (shl lo, shamt[4:0]) |
| 2172 | SDValue Not = DAG.getNode(ISD::XOR, DL, MVT::i32, Shamt, |
| 2173 | DAG.getConstant(-1, MVT::i32)); |
| 2174 | SDValue ShiftRight1Lo = DAG.getNode(ISD::SRL, DL, MVT::i32, Lo, |
| 2175 | DAG.getConstant(1, MVT::i32)); |
| 2176 | SDValue ShiftRightLo = DAG.getNode(ISD::SRL, DL, MVT::i32, ShiftRight1Lo, |
| 2177 | Not); |
| 2178 | SDValue ShiftLeftHi = DAG.getNode(ISD::SHL, DL, MVT::i32, Hi, Shamt); |
| 2179 | SDValue Or = DAG.getNode(ISD::OR, DL, MVT::i32, ShiftLeftHi, ShiftRightLo); |
| 2180 | SDValue ShiftLeftLo = DAG.getNode(ISD::SHL, DL, MVT::i32, Lo, Shamt); |
| 2181 | SDValue Cond = DAG.getNode(ISD::AND, DL, MVT::i32, Shamt, |
| 2182 | DAG.getConstant(0x20, MVT::i32)); |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 2183 | Lo = DAG.getNode(ISD::SELECT, DL, MVT::i32, Cond, |
| 2184 | DAG.getConstant(0, MVT::i32), ShiftLeftLo); |
Akira Hatanaka | a284acb | 2012-05-09 00:55:21 +0000 | [diff] [blame] | 2185 | Hi = DAG.getNode(ISD::SELECT, DL, MVT::i32, Cond, ShiftLeftLo, Or); |
| 2186 | |
| 2187 | SDValue Ops[2] = {Lo, Hi}; |
| 2188 | return DAG.getMergeValues(Ops, 2, DL); |
| 2189 | } |
| 2190 | |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 2191 | SDValue MipsTargetLowering::LowerShiftRightParts(SDValue Op, SelectionDAG &DAG, |
Akira Hatanaka | a284acb | 2012-05-09 00:55:21 +0000 | [diff] [blame] | 2192 | bool IsSRA) const { |
| 2193 | DebugLoc DL = Op.getDebugLoc(); |
| 2194 | SDValue Lo = Op.getOperand(0), Hi = Op.getOperand(1); |
| 2195 | SDValue Shamt = Op.getOperand(2); |
| 2196 | |
| 2197 | // if shamt < 32: |
| 2198 | // lo = (or (shl (shl hi, 1), ~shamt) (srl lo, shamt)) |
| 2199 | // if isSRA: |
| 2200 | // hi = (sra hi, shamt) |
| 2201 | // else: |
| 2202 | // hi = (srl hi, shamt) |
| 2203 | // else: |
| 2204 | // if isSRA: |
| 2205 | // lo = (sra hi, shamt[4:0]) |
| 2206 | // hi = (sra hi, 31) |
| 2207 | // else: |
| 2208 | // lo = (srl hi, shamt[4:0]) |
| 2209 | // hi = 0 |
| 2210 | SDValue Not = DAG.getNode(ISD::XOR, DL, MVT::i32, Shamt, |
| 2211 | DAG.getConstant(-1, MVT::i32)); |
| 2212 | SDValue ShiftLeft1Hi = DAG.getNode(ISD::SHL, DL, MVT::i32, Hi, |
| 2213 | DAG.getConstant(1, MVT::i32)); |
| 2214 | SDValue ShiftLeftHi = DAG.getNode(ISD::SHL, DL, MVT::i32, ShiftLeft1Hi, Not); |
| 2215 | SDValue ShiftRightLo = DAG.getNode(ISD::SRL, DL, MVT::i32, Lo, Shamt); |
| 2216 | SDValue Or = DAG.getNode(ISD::OR, DL, MVT::i32, ShiftLeftHi, ShiftRightLo); |
| 2217 | SDValue ShiftRightHi = DAG.getNode(IsSRA ? ISD::SRA : ISD::SRL, DL, MVT::i32, |
| 2218 | Hi, Shamt); |
| 2219 | SDValue Cond = DAG.getNode(ISD::AND, DL, MVT::i32, Shamt, |
| 2220 | DAG.getConstant(0x20, MVT::i32)); |
| 2221 | SDValue Shift31 = DAG.getNode(ISD::SRA, DL, MVT::i32, Hi, |
| 2222 | DAG.getConstant(31, MVT::i32)); |
| 2223 | Lo = DAG.getNode(ISD::SELECT, DL, MVT::i32, Cond, ShiftRightHi, Or); |
| 2224 | Hi = DAG.getNode(ISD::SELECT, DL, MVT::i32, Cond, |
| 2225 | IsSRA ? Shift31 : DAG.getConstant(0, MVT::i32), |
| 2226 | ShiftRightHi); |
| 2227 | |
| 2228 | SDValue Ops[2] = {Lo, Hi}; |
| 2229 | return DAG.getMergeValues(Ops, 2, DL); |
| 2230 | } |
| 2231 | |
Akira Hatanaka | 1cd0ec0 | 2012-06-02 00:03:49 +0000 | [diff] [blame] | 2232 | static SDValue CreateLoadLR(unsigned Opc, SelectionDAG &DAG, LoadSDNode *LD, |
| 2233 | SDValue Chain, SDValue Src, unsigned Offset) { |
Akira Hatanaka | 2bd7e53 | 2012-06-13 19:06:08 +0000 | [diff] [blame] | 2234 | SDValue Ptr = LD->getBasePtr(); |
Akira Hatanaka | 1cd0ec0 | 2012-06-02 00:03:49 +0000 | [diff] [blame] | 2235 | EVT VT = LD->getValueType(0), MemVT = LD->getMemoryVT(); |
Akira Hatanaka | 2bd7e53 | 2012-06-13 19:06:08 +0000 | [diff] [blame] | 2236 | EVT BasePtrVT = Ptr.getValueType(); |
Akira Hatanaka | 1cd0ec0 | 2012-06-02 00:03:49 +0000 | [diff] [blame] | 2237 | DebugLoc DL = LD->getDebugLoc(); |
| 2238 | SDVTList VTList = DAG.getVTList(VT, MVT::Other); |
| 2239 | |
| 2240 | if (Offset) |
Akira Hatanaka | 2bd7e53 | 2012-06-13 19:06:08 +0000 | [diff] [blame] | 2241 | Ptr = DAG.getNode(ISD::ADD, DL, BasePtrVT, Ptr, |
Akira Hatanaka | 1cd0ec0 | 2012-06-02 00:03:49 +0000 | [diff] [blame] | 2242 | DAG.getConstant(Offset, BasePtrVT)); |
Akira Hatanaka | 1cd0ec0 | 2012-06-02 00:03:49 +0000 | [diff] [blame] | 2243 | |
| 2244 | SDValue Ops[] = { Chain, Ptr, Src }; |
| 2245 | return DAG.getMemIntrinsicNode(Opc, DL, VTList, Ops, 3, MemVT, |
| 2246 | LD->getMemOperand()); |
| 2247 | } |
| 2248 | |
| 2249 | // Expand an unaligned 32 or 64-bit integer load node. |
| 2250 | SDValue MipsTargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const { |
| 2251 | LoadSDNode *LD = cast<LoadSDNode>(Op); |
| 2252 | EVT MemVT = LD->getMemoryVT(); |
| 2253 | |
| 2254 | // Return if load is aligned or if MemVT is neither i32 nor i64. |
| 2255 | if ((LD->getAlignment() >= MemVT.getSizeInBits() / 8) || |
| 2256 | ((MemVT != MVT::i32) && (MemVT != MVT::i64))) |
| 2257 | return SDValue(); |
| 2258 | |
| 2259 | bool IsLittle = Subtarget->isLittle(); |
| 2260 | EVT VT = Op.getValueType(); |
| 2261 | ISD::LoadExtType ExtType = LD->getExtensionType(); |
| 2262 | SDValue Chain = LD->getChain(), Undef = DAG.getUNDEF(VT); |
| 2263 | |
| 2264 | assert((VT == MVT::i32) || (VT == MVT::i64)); |
| 2265 | |
| 2266 | // Expand |
| 2267 | // (set dst, (i64 (load baseptr))) |
| 2268 | // to |
| 2269 | // (set tmp, (ldl (add baseptr, 7), undef)) |
| 2270 | // (set dst, (ldr baseptr, tmp)) |
| 2271 | if ((VT == MVT::i64) && (ExtType == ISD::NON_EXTLOAD)) { |
| 2272 | SDValue LDL = CreateLoadLR(MipsISD::LDL, DAG, LD, Chain, Undef, |
| 2273 | IsLittle ? 7 : 0); |
| 2274 | return CreateLoadLR(MipsISD::LDR, DAG, LD, LDL.getValue(1), LDL, |
| 2275 | IsLittle ? 0 : 7); |
| 2276 | } |
| 2277 | |
| 2278 | SDValue LWL = CreateLoadLR(MipsISD::LWL, DAG, LD, Chain, Undef, |
| 2279 | IsLittle ? 3 : 0); |
| 2280 | SDValue LWR = CreateLoadLR(MipsISD::LWR, DAG, LD, LWL.getValue(1), LWL, |
| 2281 | IsLittle ? 0 : 3); |
| 2282 | |
| 2283 | // Expand |
| 2284 | // (set dst, (i32 (load baseptr))) or |
| 2285 | // (set dst, (i64 (sextload baseptr))) or |
| 2286 | // (set dst, (i64 (extload baseptr))) |
| 2287 | // to |
| 2288 | // (set tmp, (lwl (add baseptr, 3), undef)) |
| 2289 | // (set dst, (lwr baseptr, tmp)) |
| 2290 | if ((VT == MVT::i32) || (ExtType == ISD::SEXTLOAD) || |
| 2291 | (ExtType == ISD::EXTLOAD)) |
| 2292 | return LWR; |
| 2293 | |
| 2294 | assert((VT == MVT::i64) && (ExtType == ISD::ZEXTLOAD)); |
| 2295 | |
| 2296 | // Expand |
| 2297 | // (set dst, (i64 (zextload baseptr))) |
| 2298 | // to |
| 2299 | // (set tmp0, (lwl (add baseptr, 3), undef)) |
| 2300 | // (set tmp1, (lwr baseptr, tmp0)) |
| 2301 | // (set tmp2, (shl tmp1, 32)) |
| 2302 | // (set dst, (srl tmp2, 32)) |
| 2303 | DebugLoc DL = LD->getDebugLoc(); |
| 2304 | SDValue Const32 = DAG.getConstant(32, MVT::i32); |
| 2305 | SDValue SLL = DAG.getNode(ISD::SHL, DL, MVT::i64, LWR, Const32); |
Akira Hatanaka | 94ccee2 | 2012-06-04 17:46:29 +0000 | [diff] [blame] | 2306 | SDValue SRL = DAG.getNode(ISD::SRL, DL, MVT::i64, SLL, Const32); |
| 2307 | SDValue Ops[] = { SRL, LWR.getValue(1) }; |
Akira Hatanaka | 1cd0ec0 | 2012-06-02 00:03:49 +0000 | [diff] [blame] | 2308 | return DAG.getMergeValues(Ops, 2, DL); |
| 2309 | } |
| 2310 | |
| 2311 | static SDValue CreateStoreLR(unsigned Opc, SelectionDAG &DAG, StoreSDNode *SD, |
| 2312 | SDValue Chain, unsigned Offset) { |
Akira Hatanaka | 2bd7e53 | 2012-06-13 19:06:08 +0000 | [diff] [blame] | 2313 | SDValue Ptr = SD->getBasePtr(), Value = SD->getValue(); |
| 2314 | EVT MemVT = SD->getMemoryVT(), BasePtrVT = Ptr.getValueType(); |
Akira Hatanaka | 1cd0ec0 | 2012-06-02 00:03:49 +0000 | [diff] [blame] | 2315 | DebugLoc DL = SD->getDebugLoc(); |
| 2316 | SDVTList VTList = DAG.getVTList(MVT::Other); |
| 2317 | |
| 2318 | if (Offset) |
Akira Hatanaka | 2bd7e53 | 2012-06-13 19:06:08 +0000 | [diff] [blame] | 2319 | Ptr = DAG.getNode(ISD::ADD, DL, BasePtrVT, Ptr, |
Akira Hatanaka | 1cd0ec0 | 2012-06-02 00:03:49 +0000 | [diff] [blame] | 2320 | DAG.getConstant(Offset, BasePtrVT)); |
Akira Hatanaka | 1cd0ec0 | 2012-06-02 00:03:49 +0000 | [diff] [blame] | 2321 | |
| 2322 | SDValue Ops[] = { Chain, Value, Ptr }; |
| 2323 | return DAG.getMemIntrinsicNode(Opc, DL, VTList, Ops, 3, MemVT, |
| 2324 | SD->getMemOperand()); |
| 2325 | } |
| 2326 | |
| 2327 | // Expand an unaligned 32 or 64-bit integer store node. |
| 2328 | SDValue MipsTargetLowering::LowerSTORE(SDValue Op, SelectionDAG &DAG) const { |
| 2329 | StoreSDNode *SD = cast<StoreSDNode>(Op); |
| 2330 | EVT MemVT = SD->getMemoryVT(); |
| 2331 | |
| 2332 | // Return if store is aligned or if MemVT is neither i32 nor i64. |
| 2333 | if ((SD->getAlignment() >= MemVT.getSizeInBits() / 8) || |
| 2334 | ((MemVT != MVT::i32) && (MemVT != MVT::i64))) |
| 2335 | return SDValue(); |
| 2336 | |
| 2337 | bool IsLittle = Subtarget->isLittle(); |
| 2338 | SDValue Value = SD->getValue(), Chain = SD->getChain(); |
| 2339 | EVT VT = Value.getValueType(); |
| 2340 | |
| 2341 | // Expand |
| 2342 | // (store val, baseptr) or |
| 2343 | // (truncstore val, baseptr) |
| 2344 | // to |
| 2345 | // (swl val, (add baseptr, 3)) |
| 2346 | // (swr val, baseptr) |
| 2347 | if ((VT == MVT::i32) || SD->isTruncatingStore()) { |
| 2348 | SDValue SWL = CreateStoreLR(MipsISD::SWL, DAG, SD, Chain, |
| 2349 | IsLittle ? 3 : 0); |
| 2350 | return CreateStoreLR(MipsISD::SWR, DAG, SD, SWL, IsLittle ? 0 : 3); |
| 2351 | } |
| 2352 | |
| 2353 | assert(VT == MVT::i64); |
| 2354 | |
| 2355 | // Expand |
| 2356 | // (store val, baseptr) |
| 2357 | // to |
| 2358 | // (sdl val, (add baseptr, 7)) |
| 2359 | // (sdr val, baseptr) |
| 2360 | SDValue SDL = CreateStoreLR(MipsISD::SDL, DAG, SD, Chain, IsLittle ? 7 : 0); |
| 2361 | return CreateStoreLR(MipsISD::SDR, DAG, SD, SDL, IsLittle ? 0 : 7); |
| 2362 | } |
| 2363 | |
Akira Hatanaka | fd89e6f | 2012-09-27 02:05:42 +0000 | [diff] [blame] | 2364 | // This function expands mips intrinsic nodes which have 64-bit input operands |
| 2365 | // or output values. |
| 2366 | // |
| 2367 | // out64 = intrinsic-node in64 |
| 2368 | // => |
| 2369 | // lo = copy (extract-element (in64, 0)) |
| 2370 | // hi = copy (extract-element (in64, 1)) |
| 2371 | // mips-specific-node |
| 2372 | // v0 = copy lo |
| 2373 | // v1 = copy hi |
| 2374 | // out64 = merge-values (v0, v1) |
| 2375 | // |
| 2376 | static SDValue LowerDSPIntr(SDValue Op, SelectionDAG &DAG, |
| 2377 | unsigned Opc, bool HasI64In, bool HasI64Out) { |
| 2378 | DebugLoc DL = Op.getDebugLoc(); |
| 2379 | bool HasChainIn = Op->getOperand(0).getValueType() == MVT::Other; |
| 2380 | SDValue Chain = HasChainIn ? Op->getOperand(0) : DAG.getEntryNode(); |
| 2381 | SmallVector<SDValue, 3> Ops; |
| 2382 | |
| 2383 | if (HasI64In) { |
| 2384 | SDValue InLo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, |
| 2385 | Op->getOperand(1 + HasChainIn), |
| 2386 | DAG.getConstant(0, MVT::i32)); |
| 2387 | SDValue InHi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, |
| 2388 | Op->getOperand(1 + HasChainIn), |
| 2389 | DAG.getConstant(1, MVT::i32)); |
| 2390 | |
| 2391 | Chain = DAG.getCopyToReg(Chain, DL, Mips::LO, InLo, SDValue()); |
| 2392 | Chain = DAG.getCopyToReg(Chain, DL, Mips::HI, InHi, Chain.getValue(1)); |
| 2393 | |
| 2394 | Ops.push_back(Chain); |
| 2395 | Ops.append(Op->op_begin() + HasChainIn + 2, Op->op_end()); |
| 2396 | Ops.push_back(Chain.getValue(1)); |
| 2397 | } else { |
| 2398 | Ops.push_back(Chain); |
| 2399 | Ops.append(Op->op_begin() + HasChainIn + 1, Op->op_end()); |
| 2400 | } |
| 2401 | |
| 2402 | if (!HasI64Out) |
| 2403 | return DAG.getNode(Opc, DL, Op->value_begin(), Op->getNumValues(), |
| 2404 | Ops.begin(), Ops.size()); |
| 2405 | |
| 2406 | SDValue Intr = DAG.getNode(Opc, DL, DAG.getVTList(MVT::Other, MVT::Glue), |
| 2407 | Ops.begin(), Ops.size()); |
| 2408 | SDValue OutLo = DAG.getCopyFromReg(Intr.getValue(0), DL, Mips::LO, MVT::i32, |
| 2409 | Intr.getValue(1)); |
| 2410 | SDValue OutHi = DAG.getCopyFromReg(OutLo.getValue(1), DL, Mips::HI, MVT::i32, |
| 2411 | OutLo.getValue(2)); |
| 2412 | SDValue Out = DAG.getNode(ISD::BUILD_PAIR, DL, MVT::i64, OutLo, OutHi); |
| 2413 | |
| 2414 | if (!HasChainIn) |
| 2415 | return Out; |
| 2416 | |
| 2417 | SDValue Vals[] = { Out, OutHi.getValue(1) }; |
| 2418 | return DAG.getMergeValues(Vals, 2, DL); |
| 2419 | } |
| 2420 | |
| 2421 | SDValue MipsTargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op, |
| 2422 | SelectionDAG &DAG) const { |
| 2423 | switch (cast<ConstantSDNode>(Op->getOperand(0))->getZExtValue()) { |
| 2424 | default: |
| 2425 | return SDValue(); |
Akira Hatanaka | 2df483e | 2012-09-27 02:11:20 +0000 | [diff] [blame] | 2426 | case Intrinsic::mips_shilo: |
| 2427 | return LowerDSPIntr(Op, DAG, MipsISD::SHILO, true, true); |
| 2428 | case Intrinsic::mips_dpau_h_qbl: |
| 2429 | return LowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBL, true, true); |
| 2430 | case Intrinsic::mips_dpau_h_qbr: |
| 2431 | return LowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBR, true, true); |
| 2432 | case Intrinsic::mips_dpsu_h_qbl: |
| 2433 | return LowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBL, true, true); |
| 2434 | case Intrinsic::mips_dpsu_h_qbr: |
| 2435 | return LowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBR, true, true); |
| 2436 | case Intrinsic::mips_dpa_w_ph: |
| 2437 | return LowerDSPIntr(Op, DAG, MipsISD::DPA_W_PH, true, true); |
| 2438 | case Intrinsic::mips_dps_w_ph: |
| 2439 | return LowerDSPIntr(Op, DAG, MipsISD::DPS_W_PH, true, true); |
| 2440 | case Intrinsic::mips_dpax_w_ph: |
| 2441 | return LowerDSPIntr(Op, DAG, MipsISD::DPAX_W_PH, true, true); |
| 2442 | case Intrinsic::mips_dpsx_w_ph: |
| 2443 | return LowerDSPIntr(Op, DAG, MipsISD::DPSX_W_PH, true, true); |
| 2444 | case Intrinsic::mips_mulsa_w_ph: |
| 2445 | return LowerDSPIntr(Op, DAG, MipsISD::MULSA_W_PH, true, true); |
| 2446 | case Intrinsic::mips_mult: |
| 2447 | return LowerDSPIntr(Op, DAG, MipsISD::MULT, false, true); |
| 2448 | case Intrinsic::mips_multu: |
| 2449 | return LowerDSPIntr(Op, DAG, MipsISD::MULTU, false, true); |
| 2450 | case Intrinsic::mips_madd: |
| 2451 | return LowerDSPIntr(Op, DAG, MipsISD::MADD_DSP, true, true); |
| 2452 | case Intrinsic::mips_maddu: |
| 2453 | return LowerDSPIntr(Op, DAG, MipsISD::MADDU_DSP, true, true); |
| 2454 | case Intrinsic::mips_msub: |
| 2455 | return LowerDSPIntr(Op, DAG, MipsISD::MSUB_DSP, true, true); |
| 2456 | case Intrinsic::mips_msubu: |
| 2457 | return LowerDSPIntr(Op, DAG, MipsISD::MSUBU_DSP, true, true); |
Akira Hatanaka | fd89e6f | 2012-09-27 02:05:42 +0000 | [diff] [blame] | 2458 | } |
| 2459 | } |
| 2460 | |
| 2461 | SDValue MipsTargetLowering::LowerINTRINSIC_W_CHAIN(SDValue Op, |
| 2462 | SelectionDAG &DAG) const { |
| 2463 | switch (cast<ConstantSDNode>(Op->getOperand(1))->getZExtValue()) { |
| 2464 | default: |
| 2465 | return SDValue(); |
| 2466 | case Intrinsic::mips_extp: |
| 2467 | return LowerDSPIntr(Op, DAG, MipsISD::EXTP, true, false); |
| 2468 | case Intrinsic::mips_extpdp: |
| 2469 | return LowerDSPIntr(Op, DAG, MipsISD::EXTPDP, true, false); |
| 2470 | case Intrinsic::mips_extr_w: |
| 2471 | return LowerDSPIntr(Op, DAG, MipsISD::EXTR_W, true, false); |
| 2472 | case Intrinsic::mips_extr_r_w: |
| 2473 | return LowerDSPIntr(Op, DAG, MipsISD::EXTR_R_W, true, false); |
| 2474 | case Intrinsic::mips_extr_rs_w: |
| 2475 | return LowerDSPIntr(Op, DAG, MipsISD::EXTR_RS_W, true, false); |
| 2476 | case Intrinsic::mips_extr_s_h: |
| 2477 | return LowerDSPIntr(Op, DAG, MipsISD::EXTR_S_H, true, false); |
Akira Hatanaka | 2df483e | 2012-09-27 02:11:20 +0000 | [diff] [blame] | 2478 | case Intrinsic::mips_mthlip: |
| 2479 | return LowerDSPIntr(Op, DAG, MipsISD::MTHLIP, true, true); |
| 2480 | case Intrinsic::mips_mulsaq_s_w_ph: |
| 2481 | return LowerDSPIntr(Op, DAG, MipsISD::MULSAQ_S_W_PH, true, true); |
| 2482 | case Intrinsic::mips_maq_s_w_phl: |
| 2483 | return LowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHL, true, true); |
| 2484 | case Intrinsic::mips_maq_s_w_phr: |
| 2485 | return LowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHR, true, true); |
| 2486 | case Intrinsic::mips_maq_sa_w_phl: |
| 2487 | return LowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHL, true, true); |
| 2488 | case Intrinsic::mips_maq_sa_w_phr: |
| 2489 | return LowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHR, true, true); |
| 2490 | case Intrinsic::mips_dpaq_s_w_ph: |
| 2491 | return LowerDSPIntr(Op, DAG, MipsISD::DPAQ_S_W_PH, true, true); |
| 2492 | case Intrinsic::mips_dpsq_s_w_ph: |
| 2493 | return LowerDSPIntr(Op, DAG, MipsISD::DPSQ_S_W_PH, true, true); |
| 2494 | case Intrinsic::mips_dpaq_sa_l_w: |
| 2495 | return LowerDSPIntr(Op, DAG, MipsISD::DPAQ_SA_L_W, true, true); |
| 2496 | case Intrinsic::mips_dpsq_sa_l_w: |
| 2497 | return LowerDSPIntr(Op, DAG, MipsISD::DPSQ_SA_L_W, true, true); |
| 2498 | case Intrinsic::mips_dpaqx_s_w_ph: |
| 2499 | return LowerDSPIntr(Op, DAG, MipsISD::DPAQX_S_W_PH, true, true); |
| 2500 | case Intrinsic::mips_dpaqx_sa_w_ph: |
| 2501 | return LowerDSPIntr(Op, DAG, MipsISD::DPAQX_SA_W_PH, true, true); |
| 2502 | case Intrinsic::mips_dpsqx_s_w_ph: |
| 2503 | return LowerDSPIntr(Op, DAG, MipsISD::DPSQX_S_W_PH, true, true); |
| 2504 | case Intrinsic::mips_dpsqx_sa_w_ph: |
| 2505 | return LowerDSPIntr(Op, DAG, MipsISD::DPSQX_SA_W_PH, true, true); |
Akira Hatanaka | fd89e6f | 2012-09-27 02:05:42 +0000 | [diff] [blame] | 2506 | } |
| 2507 | } |
| 2508 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2509 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2510 | // Calling Convention Implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2511 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2512 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2513 | //===----------------------------------------------------------------------===// |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2514 | // TODO: Implement a generic logic using tblgen that can support this. |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2515 | // Mips O32 ABI rules: |
| 2516 | // --- |
| 2517 | // i32 - Passed in A0, A1, A2, A3 and stack |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2518 | // f32 - Only passed in f32 registers if no int reg has been used yet to hold |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2519 | // an argument. Otherwise, passed in A1, A2, A3 and stack. |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2520 | // f64 - Only passed in two aliased f32 registers if no int reg has been used |
| 2521 | // yet to hold an argument. Otherwise, use A2, A3 and stack. If A1 is |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2522 | // not used, it must be shadowed. If only A3 is avaiable, shadow it and |
| 2523 | // go to stack. |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 2524 | // |
| 2525 | // For vararg functions, all arguments are passed in A0, A1, A2, A3 and stack. |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2526 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2527 | |
Duncan Sands | 1e96bab | 2010-11-04 10:49:57 +0000 | [diff] [blame] | 2528 | static bool CC_MipsO32(unsigned ValNo, MVT ValVT, |
Duncan Sands | 1440e8b | 2010-11-03 11:35:31 +0000 | [diff] [blame] | 2529 | MVT LocVT, CCValAssign::LocInfo LocInfo, |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2530 | ISD::ArgFlagsTy ArgFlags, CCState &State) { |
| 2531 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2532 | static const unsigned IntRegsSize=4, FloatRegsSize=2; |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2533 | |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2534 | static const uint16_t IntRegs[] = { |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2535 | Mips::A0, Mips::A1, Mips::A2, Mips::A3 |
| 2536 | }; |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2537 | static const uint16_t F32Regs[] = { |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2538 | Mips::F12, Mips::F14 |
| 2539 | }; |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2540 | static const uint16_t F64Regs[] = { |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2541 | Mips::D6, Mips::D7 |
| 2542 | }; |
| 2543 | |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2544 | // ByVal Args |
| 2545 | if (ArgFlags.isByVal()) { |
| 2546 | State.HandleByVal(ValNo, ValVT, LocVT, LocInfo, |
| 2547 | 1 /*MinSize*/, 4 /*MinAlign*/, ArgFlags); |
| 2548 | unsigned NextReg = (State.getNextStackOffset() + 3) / 4; |
| 2549 | for (unsigned r = State.getFirstUnallocated(IntRegs, IntRegsSize); |
| 2550 | r < std::min(IntRegsSize, NextReg); ++r) |
| 2551 | State.AllocateReg(IntRegs[r]); |
| 2552 | return false; |
| 2553 | } |
| 2554 | |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2555 | // Promote i8 and i16 |
| 2556 | if (LocVT == MVT::i8 || LocVT == MVT::i16) { |
| 2557 | LocVT = MVT::i32; |
| 2558 | if (ArgFlags.isSExt()) |
| 2559 | LocInfo = CCValAssign::SExt; |
| 2560 | else if (ArgFlags.isZExt()) |
| 2561 | LocInfo = CCValAssign::ZExt; |
| 2562 | else |
| 2563 | LocInfo = CCValAssign::AExt; |
| 2564 | } |
| 2565 | |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2566 | unsigned Reg; |
| 2567 | |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 2568 | // f32 and f64 are allocated in A0, A1, A2, A3 when either of the following |
| 2569 | // is true: function is vararg, argument is 3rd or higher, there is previous |
| 2570 | // argument which is not f32 or f64. |
| 2571 | bool AllocateFloatsInIntReg = State.isVarArg() || ValNo > 1 |
| 2572 | || State.getFirstUnallocated(F32Regs, FloatRegsSize) != ValNo; |
Akira Hatanaka | a1a7ba8 | 2011-05-19 20:29:48 +0000 | [diff] [blame] | 2573 | unsigned OrigAlign = ArgFlags.getOrigAlign(); |
| 2574 | bool isI64 = (ValVT == MVT::i32 && OrigAlign == 8); |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 2575 | |
| 2576 | if (ValVT == MVT::i32 || (ValVT == MVT::f32 && AllocateFloatsInIntReg)) { |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2577 | Reg = State.AllocateReg(IntRegs, IntRegsSize); |
Akira Hatanaka | a1a7ba8 | 2011-05-19 20:29:48 +0000 | [diff] [blame] | 2578 | // If this is the first part of an i64 arg, |
| 2579 | // the allocated register must be either A0 or A2. |
| 2580 | if (isI64 && (Reg == Mips::A1 || Reg == Mips::A3)) |
| 2581 | Reg = State.AllocateReg(IntRegs, IntRegsSize); |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2582 | LocVT = MVT::i32; |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 2583 | } else if (ValVT == MVT::f64 && AllocateFloatsInIntReg) { |
| 2584 | // Allocate int register and shadow next int register. If first |
| 2585 | // available register is Mips::A1 or Mips::A3, shadow it too. |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2586 | Reg = State.AllocateReg(IntRegs, IntRegsSize); |
| 2587 | if (Reg == Mips::A1 || Reg == Mips::A3) |
| 2588 | Reg = State.AllocateReg(IntRegs, IntRegsSize); |
| 2589 | State.AllocateReg(IntRegs, IntRegsSize); |
| 2590 | LocVT = MVT::i32; |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 2591 | } else if (ValVT.isFloatingPoint() && !AllocateFloatsInIntReg) { |
| 2592 | // we are guaranteed to find an available float register |
| 2593 | if (ValVT == MVT::f32) { |
| 2594 | Reg = State.AllocateReg(F32Regs, FloatRegsSize); |
| 2595 | // Shadow int register |
| 2596 | State.AllocateReg(IntRegs, IntRegsSize); |
| 2597 | } else { |
| 2598 | Reg = State.AllocateReg(F64Regs, FloatRegsSize); |
| 2599 | // Shadow int registers |
| 2600 | unsigned Reg2 = State.AllocateReg(IntRegs, IntRegsSize); |
| 2601 | if (Reg2 == Mips::A1 || Reg2 == Mips::A3) |
| 2602 | State.AllocateReg(IntRegs, IntRegsSize); |
| 2603 | State.AllocateReg(IntRegs, IntRegsSize); |
| 2604 | } |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2605 | } else |
| 2606 | llvm_unreachable("Cannot handle this ValVT."); |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2607 | |
Akira Hatanaka | d37776d | 2011-05-20 21:39:54 +0000 | [diff] [blame] | 2608 | unsigned SizeInBytes = ValVT.getSizeInBits() >> 3; |
Akira Hatanaka | 97d9f08 | 2012-10-10 01:27:09 +0000 | [diff] [blame] | 2609 | unsigned Offset; |
| 2610 | if (!ArgFlags.isSRet()) |
| 2611 | Offset = State.AllocateStack(SizeInBytes, OrigAlign); |
| 2612 | else |
| 2613 | Offset = State.AllocateStack(SizeInBytes, SizeInBytes); |
Akira Hatanaka | d37776d | 2011-05-20 21:39:54 +0000 | [diff] [blame] | 2614 | |
| 2615 | if (!Reg) |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2616 | State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo)); |
Akira Hatanaka | d37776d | 2011-05-20 21:39:54 +0000 | [diff] [blame] | 2617 | else |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2618 | State.addLoc(CCValAssign::getReg(ValNo, ValVT, Reg, LocVT, LocInfo)); |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2619 | |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2620 | return false; // CC must always match |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2621 | } |
| 2622 | |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2623 | static const uint16_t Mips64IntRegs[8] = |
Akira Hatanaka | 2c5d652 | 2011-11-12 02:20:46 +0000 | [diff] [blame] | 2624 | {Mips::A0_64, Mips::A1_64, Mips::A2_64, Mips::A3_64, |
| 2625 | Mips::T0_64, Mips::T1_64, Mips::T2_64, Mips::T3_64}; |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2626 | static const uint16_t Mips64DPRegs[8] = |
Akira Hatanaka | 2c5d652 | 2011-11-12 02:20:46 +0000 | [diff] [blame] | 2627 | {Mips::D12_64, Mips::D13_64, Mips::D14_64, Mips::D15_64, |
| 2628 | Mips::D16_64, Mips::D17_64, Mips::D18_64, Mips::D19_64}; |
| 2629 | |
| 2630 | static bool CC_Mips64Byval(unsigned ValNo, MVT ValVT, MVT LocVT, |
| 2631 | CCValAssign::LocInfo LocInfo, |
| 2632 | ISD::ArgFlagsTy ArgFlags, CCState &State) { |
| 2633 | unsigned Align = std::max(ArgFlags.getByValAlign(), (unsigned)8); |
| 2634 | unsigned Size = (ArgFlags.getByValSize() + 7) / 8 * 8; |
| 2635 | unsigned FirstIdx = State.getFirstUnallocated(Mips64IntRegs, 8); |
| 2636 | |
| 2637 | assert(Align <= 16 && "Cannot handle alignments larger than 16."); |
| 2638 | |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2639 | // If byval is 16-byte aligned, the first arg register must be even. |
Akira Hatanaka | 2c5d652 | 2011-11-12 02:20:46 +0000 | [diff] [blame] | 2640 | if ((Align == 16) && (FirstIdx % 2)) { |
| 2641 | State.AllocateReg(Mips64IntRegs[FirstIdx], Mips64DPRegs[FirstIdx]); |
| 2642 | ++FirstIdx; |
| 2643 | } |
| 2644 | |
| 2645 | // Mark the registers allocated. |
| 2646 | for (unsigned I = FirstIdx; Size && (I < 8); Size -= 8, ++I) |
| 2647 | State.AllocateReg(Mips64IntRegs[I], Mips64DPRegs[I]); |
| 2648 | |
| 2649 | // Allocate space on caller's stack. |
| 2650 | unsigned Offset = State.AllocateStack(Size, Align); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2651 | |
Akira Hatanaka | 2c5d652 | 2011-11-12 02:20:46 +0000 | [diff] [blame] | 2652 | if (FirstIdx < 8) |
| 2653 | State.addLoc(CCValAssign::getReg(ValNo, ValVT, Mips64IntRegs[FirstIdx], |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2654 | LocVT, LocInfo)); |
Akira Hatanaka | 2c5d652 | 2011-11-12 02:20:46 +0000 | [diff] [blame] | 2655 | else |
| 2656 | State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo)); |
| 2657 | |
| 2658 | return true; |
| 2659 | } |
| 2660 | |
| 2661 | #include "MipsGenCallingConv.inc" |
| 2662 | |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 2663 | static void |
Akira Hatanaka | 08067b2 | 2012-01-24 22:07:36 +0000 | [diff] [blame] | 2664 | AnalyzeMips64CallOperands(CCState &CCInfo, |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 2665 | const SmallVectorImpl<ISD::OutputArg> &Outs) { |
| 2666 | unsigned NumOps = Outs.size(); |
| 2667 | for (unsigned i = 0; i != NumOps; ++i) { |
| 2668 | MVT ArgVT = Outs[i].VT; |
| 2669 | ISD::ArgFlagsTy ArgFlags = Outs[i].Flags; |
| 2670 | bool R; |
| 2671 | |
| 2672 | if (Outs[i].IsFixed) |
| 2673 | R = CC_MipsN(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, CCInfo); |
| 2674 | else |
| 2675 | R = CC_MipsN_VarArg(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, CCInfo); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2676 | |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 2677 | if (R) { |
Benjamin Kramer | 6296ee3 | 2011-11-14 19:51:48 +0000 | [diff] [blame] | 2678 | #ifndef NDEBUG |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 2679 | dbgs() << "Call operand #" << i << " has unhandled type " |
| 2680 | << EVT(ArgVT).getEVTString(); |
| 2681 | #endif |
| 2682 | llvm_unreachable(0); |
| 2683 | } |
| 2684 | } |
| 2685 | } |
| 2686 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2687 | //===----------------------------------------------------------------------===// |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2688 | // Call Calling Convention Implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2689 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2690 | |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2691 | static const unsigned O32IntRegsSize = 4; |
| 2692 | |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2693 | static const uint16_t O32IntRegs[] = { |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2694 | Mips::A0, Mips::A1, Mips::A2, Mips::A3 |
| 2695 | }; |
| 2696 | |
Akira Hatanaka | 373e3a4 | 2011-09-23 00:58:33 +0000 | [diff] [blame] | 2697 | // Return next O32 integer argument register. |
| 2698 | static unsigned getNextIntArgReg(unsigned Reg) { |
| 2699 | assert((Reg == Mips::A0) || (Reg == Mips::A2)); |
| 2700 | return (Reg == Mips::A0) ? Mips::A1 : Mips::A3; |
| 2701 | } |
| 2702 | |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2703 | // Write ByVal Arg to arg registers and stack. |
| 2704 | static void |
Akira Hatanaka | e2d529a | 2012-07-31 18:46:41 +0000 | [diff] [blame] | 2705 | WriteByValArg(SDValue Chain, DebugLoc dl, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 2706 | SmallVector<std::pair<unsigned, SDValue>, 16> &RegsToPass, |
Akira Hatanaka | e2d529a | 2012-07-31 18:46:41 +0000 | [diff] [blame] | 2707 | SmallVector<SDValue, 8> &MemOpChains, SDValue StackPtr, |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2708 | MachineFrameInfo *MFI, SelectionDAG &DAG, SDValue Arg, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 2709 | const CCValAssign &VA, const ISD::ArgFlagsTy &Flags, |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2710 | MVT PtrType, bool isLittle) { |
| 2711 | unsigned LocMemOffset = VA.getLocMemOffset(); |
| 2712 | unsigned Offset = 0; |
| 2713 | uint32_t RemainingSize = Flags.getByValSize(); |
Akira Hatanaka | 5c21c9e | 2011-08-12 21:30:06 +0000 | [diff] [blame] | 2714 | unsigned ByValAlign = Flags.getByValAlign(); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2715 | |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2716 | // Copy the first 4 words of byval arg to registers A0 - A3. |
| 2717 | // FIXME: Use a stricter alignment if it enables better optimization in passes |
| 2718 | // run later. |
| 2719 | for (; RemainingSize >= 4 && LocMemOffset < 4 * 4; |
| 2720 | Offset += 4, RemainingSize -= 4, LocMemOffset += 4) { |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2721 | SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg, |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2722 | DAG.getConstant(Offset, MVT::i32)); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2723 | SDValue LoadVal = DAG.getLoad(MVT::i32, dl, Chain, LoadPtr, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2724 | MachinePointerInfo(), false, false, false, |
| 2725 | std::min(ByValAlign, (unsigned )4)); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2726 | MemOpChains.push_back(LoadVal.getValue(1)); |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2727 | unsigned DstReg = O32IntRegs[LocMemOffset / 4]; |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2728 | RegsToPass.push_back(std::make_pair(DstReg, LoadVal)); |
| 2729 | } |
| 2730 | |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2731 | if (RemainingSize == 0) |
| 2732 | return; |
| 2733 | |
| 2734 | // If there still is a register available for argument passing, write the |
| 2735 | // remaining part of the structure to it using subword loads and shifts. |
| 2736 | if (LocMemOffset < 4 * 4) { |
| 2737 | assert(RemainingSize <= 3 && RemainingSize >= 1 && |
| 2738 | "There must be one to three bytes remaining."); |
| 2739 | unsigned LoadSize = (RemainingSize == 3 ? 2 : RemainingSize); |
| 2740 | SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg, |
| 2741 | DAG.getConstant(Offset, MVT::i32)); |
| 2742 | unsigned Alignment = std::min(ByValAlign, (unsigned )4); |
| 2743 | SDValue LoadVal = DAG.getExtLoad(ISD::ZEXTLOAD, dl, MVT::i32, Chain, |
| 2744 | LoadPtr, MachinePointerInfo(), |
| 2745 | MVT::getIntegerVT(LoadSize * 8), false, |
| 2746 | false, Alignment); |
| 2747 | MemOpChains.push_back(LoadVal.getValue(1)); |
| 2748 | |
| 2749 | // If target is big endian, shift it to the most significant half-word or |
| 2750 | // byte. |
| 2751 | if (!isLittle) |
| 2752 | LoadVal = DAG.getNode(ISD::SHL, dl, MVT::i32, LoadVal, |
| 2753 | DAG.getConstant(32 - LoadSize * 8, MVT::i32)); |
| 2754 | |
| 2755 | Offset += LoadSize; |
| 2756 | RemainingSize -= LoadSize; |
| 2757 | |
| 2758 | // Read second subword if necessary. |
| 2759 | if (RemainingSize != 0) { |
| 2760 | assert(RemainingSize == 1 && "There must be one byte remaining."); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2761 | LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg, |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2762 | DAG.getConstant(Offset, MVT::i32)); |
| 2763 | unsigned Alignment = std::min(ByValAlign, (unsigned )2); |
| 2764 | SDValue Subword = DAG.getExtLoad(ISD::ZEXTLOAD, dl, MVT::i32, Chain, |
| 2765 | LoadPtr, MachinePointerInfo(), |
| 2766 | MVT::i8, false, false, Alignment); |
| 2767 | MemOpChains.push_back(Subword.getValue(1)); |
| 2768 | // Insert the loaded byte to LoadVal. |
| 2769 | // FIXME: Use INS if supported by target. |
| 2770 | unsigned ShiftAmt = isLittle ? 16 : 8; |
| 2771 | SDValue Shift = DAG.getNode(ISD::SHL, dl, MVT::i32, Subword, |
| 2772 | DAG.getConstant(ShiftAmt, MVT::i32)); |
| 2773 | LoadVal = DAG.getNode(ISD::OR, dl, MVT::i32, LoadVal, Shift); |
| 2774 | } |
| 2775 | |
| 2776 | unsigned DstReg = O32IntRegs[LocMemOffset / 4]; |
| 2777 | RegsToPass.push_back(std::make_pair(DstReg, LoadVal)); |
| 2778 | return; |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2779 | } |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2780 | |
Akira Hatanaka | e2d529a | 2012-07-31 18:46:41 +0000 | [diff] [blame] | 2781 | // Copy remaining part of byval arg using memcpy. |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2782 | SDValue Src = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg, |
| 2783 | DAG.getConstant(Offset, MVT::i32)); |
Akira Hatanaka | e2d529a | 2012-07-31 18:46:41 +0000 | [diff] [blame] | 2784 | SDValue Dst = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, |
| 2785 | DAG.getIntPtrConstant(LocMemOffset)); |
| 2786 | Chain = DAG.getMemcpy(Chain, dl, Dst, Src, |
| 2787 | DAG.getConstant(RemainingSize, MVT::i32), |
| 2788 | std::min(ByValAlign, (unsigned)4), |
| 2789 | /*isVolatile=*/false, /*AlwaysInline=*/false, |
| 2790 | MachinePointerInfo(0), MachinePointerInfo(0)); |
| 2791 | MemOpChains.push_back(Chain); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2792 | } |
| 2793 | |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2794 | // Copy Mips64 byVal arg to registers and stack. |
| 2795 | void static |
Akira Hatanaka | e2d529a | 2012-07-31 18:46:41 +0000 | [diff] [blame] | 2796 | PassByValArg64(SDValue Chain, DebugLoc dl, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 2797 | SmallVector<std::pair<unsigned, SDValue>, 16> &RegsToPass, |
Akira Hatanaka | e2d529a | 2012-07-31 18:46:41 +0000 | [diff] [blame] | 2798 | SmallVector<SDValue, 8> &MemOpChains, SDValue StackPtr, |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2799 | MachineFrameInfo *MFI, SelectionDAG &DAG, SDValue Arg, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 2800 | const CCValAssign &VA, const ISD::ArgFlagsTy &Flags, |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2801 | EVT PtrTy, bool isLittle) { |
| 2802 | unsigned ByValSize = Flags.getByValSize(); |
| 2803 | unsigned Alignment = std::min(Flags.getByValAlign(), (unsigned)8); |
| 2804 | bool IsRegLoc = VA.isRegLoc(); |
| 2805 | unsigned Offset = 0; // Offset in # of bytes from the beginning of struct. |
| 2806 | unsigned LocMemOffset = 0; |
Akira Hatanaka | 1604085 | 2011-11-15 18:42:25 +0000 | [diff] [blame] | 2807 | unsigned MemCpySize = ByValSize; |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2808 | |
| 2809 | if (!IsRegLoc) |
| 2810 | LocMemOffset = VA.getLocMemOffset(); |
| 2811 | else { |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2812 | const uint16_t *Reg = std::find(Mips64IntRegs, Mips64IntRegs + 8, |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2813 | VA.getLocReg()); |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2814 | const uint16_t *RegEnd = Mips64IntRegs + 8; |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2815 | |
| 2816 | // Copy double words to registers. |
| 2817 | for (; (Reg != RegEnd) && (ByValSize >= Offset + 8); ++Reg, Offset += 8) { |
| 2818 | SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, PtrTy, Arg, |
| 2819 | DAG.getConstant(Offset, PtrTy)); |
| 2820 | SDValue LoadVal = DAG.getLoad(MVT::i64, dl, Chain, LoadPtr, |
| 2821 | MachinePointerInfo(), false, false, false, |
| 2822 | Alignment); |
| 2823 | MemOpChains.push_back(LoadVal.getValue(1)); |
| 2824 | RegsToPass.push_back(std::make_pair(*Reg, LoadVal)); |
| 2825 | } |
| 2826 | |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2827 | // Return if the struct has been fully copied. |
Akira Hatanaka | 1604085 | 2011-11-15 18:42:25 +0000 | [diff] [blame] | 2828 | if (!(MemCpySize = ByValSize - Offset)) |
| 2829 | return; |
| 2830 | |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2831 | // If there is an argument register available, copy the remainder of the |
| 2832 | // byval argument with sub-doubleword loads and shifts. |
Akira Hatanaka | 1604085 | 2011-11-15 18:42:25 +0000 | [diff] [blame] | 2833 | if (Reg != RegEnd) { |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2834 | assert((ByValSize < Offset + 8) && |
| 2835 | "Size of the remainder should be smaller than 8-byte."); |
| 2836 | SDValue Val; |
| 2837 | for (unsigned LoadSize = 4; Offset < ByValSize; LoadSize /= 2) { |
| 2838 | unsigned RemSize = ByValSize - Offset; |
| 2839 | |
| 2840 | if (RemSize < LoadSize) |
| 2841 | continue; |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2842 | |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2843 | SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, PtrTy, Arg, |
| 2844 | DAG.getConstant(Offset, PtrTy)); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2845 | SDValue LoadVal = |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2846 | DAG.getExtLoad(ISD::ZEXTLOAD, dl, MVT::i64, Chain, LoadPtr, |
| 2847 | MachinePointerInfo(), MVT::getIntegerVT(LoadSize * 8), |
| 2848 | false, false, Alignment); |
| 2849 | MemOpChains.push_back(LoadVal.getValue(1)); |
| 2850 | |
| 2851 | // Offset in number of bits from double word boundary. |
| 2852 | unsigned OffsetDW = (Offset % 8) * 8; |
| 2853 | unsigned Shamt = isLittle ? OffsetDW : 64 - (OffsetDW + LoadSize * 8); |
| 2854 | SDValue Shift = DAG.getNode(ISD::SHL, dl, MVT::i64, LoadVal, |
| 2855 | DAG.getConstant(Shamt, MVT::i32)); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2856 | |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2857 | Val = Val.getNode() ? DAG.getNode(ISD::OR, dl, MVT::i64, Val, Shift) : |
| 2858 | Shift; |
| 2859 | Offset += LoadSize; |
| 2860 | Alignment = std::min(Alignment, LoadSize); |
| 2861 | } |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2862 | |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2863 | RegsToPass.push_back(std::make_pair(*Reg, Val)); |
| 2864 | return; |
| 2865 | } |
| 2866 | } |
| 2867 | |
Akira Hatanaka | 1604085 | 2011-11-15 18:42:25 +0000 | [diff] [blame] | 2868 | assert(MemCpySize && "MemCpySize must not be zero."); |
| 2869 | |
Akira Hatanaka | e2d529a | 2012-07-31 18:46:41 +0000 | [diff] [blame] | 2870 | // Copy remainder of byval arg to it with memcpy. |
Akira Hatanaka | 1604085 | 2011-11-15 18:42:25 +0000 | [diff] [blame] | 2871 | SDValue Src = DAG.getNode(ISD::ADD, dl, PtrTy, Arg, |
| 2872 | DAG.getConstant(Offset, PtrTy)); |
Akira Hatanaka | e2d529a | 2012-07-31 18:46:41 +0000 | [diff] [blame] | 2873 | SDValue Dst = DAG.getNode(ISD::ADD, dl, MVT::i64, StackPtr, |
| 2874 | DAG.getIntPtrConstant(LocMemOffset)); |
| 2875 | Chain = DAG.getMemcpy(Chain, dl, Dst, Src, |
| 2876 | DAG.getConstant(MemCpySize, PtrTy), Alignment, |
| 2877 | /*isVolatile=*/false, /*AlwaysInline=*/false, |
| 2878 | MachinePointerInfo(0), MachinePointerInfo(0)); |
| 2879 | MemOpChains.push_back(Chain); |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2880 | } |
| 2881 | |
Akira Hatanaka | 2b861be | 2012-10-19 21:47:33 +0000 | [diff] [blame^] | 2882 | /// IsEligibleForTailCallOptimization - Check whether the call is eligible |
| 2883 | /// for tail call optimization. |
| 2884 | bool MipsTargetLowering:: |
| 2885 | IsEligibleForTailCallOptimization(CallingConv::ID CalleeCC, |
| 2886 | unsigned NextStackOffset) const { |
| 2887 | if (!EnableMipsTailCalls) |
| 2888 | return false; |
| 2889 | |
| 2890 | // Do not tail-call optimize if there is an argument passed on stack. |
| 2891 | if (IsO32 && (CalleeCC != CallingConv::Fast)) { |
| 2892 | if (NextStackOffset > 16) |
| 2893 | return false; |
| 2894 | } else if (NextStackOffset) |
| 2895 | return false; |
| 2896 | |
| 2897 | return true; |
| 2898 | } |
| 2899 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2900 | /// LowerCall - functions arguments are copied from virtual regs to |
Nate Begeman | 5bf4b75 | 2009-01-26 03:15:54 +0000 | [diff] [blame] | 2901 | /// (physical regs)/(stack frame), CALLSEQ_START and CALLSEQ_END are emitted. |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2902 | SDValue |
Justin Holewinski | d2ea0e1 | 2012-05-25 16:35:28 +0000 | [diff] [blame] | 2903 | MipsTargetLowering::LowerCall(TargetLowering::CallLoweringInfo &CLI, |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 2904 | SmallVectorImpl<SDValue> &InVals) const { |
Justin Holewinski | d2ea0e1 | 2012-05-25 16:35:28 +0000 | [diff] [blame] | 2905 | SelectionDAG &DAG = CLI.DAG; |
| 2906 | DebugLoc &dl = CLI.DL; |
| 2907 | SmallVector<ISD::OutputArg, 32> &Outs = CLI.Outs; |
| 2908 | SmallVector<SDValue, 32> &OutVals = CLI.OutVals; |
| 2909 | SmallVector<ISD::InputArg, 32> &Ins = CLI.Ins; |
Akira Hatanaka | e2d529a | 2012-07-31 18:46:41 +0000 | [diff] [blame] | 2910 | SDValue Chain = CLI.Chain; |
Justin Holewinski | d2ea0e1 | 2012-05-25 16:35:28 +0000 | [diff] [blame] | 2911 | SDValue Callee = CLI.Callee; |
| 2912 | bool &isTailCall = CLI.IsTailCall; |
| 2913 | CallingConv::ID CallConv = CLI.CallConv; |
| 2914 | bool isVarArg = CLI.IsVarArg; |
| 2915 | |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2916 | MachineFunction &MF = DAG.getMachineFunction(); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2917 | MachineFrameInfo *MFI = MF.getFrameInfo(); |
Akira Hatanaka | d37776d | 2011-05-20 21:39:54 +0000 | [diff] [blame] | 2918 | const TargetFrameLowering *TFL = MF.getTarget().getFrameLowering(); |
Bruno Cardoso Lopes | c517cb0 | 2009-09-01 17:27:58 +0000 | [diff] [blame] | 2919 | bool IsPIC = getTargetMachine().getRelocationModel() == Reloc::PIC_; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2920 | |
| 2921 | // Analyze operands of the call, assigning locations to each operand. |
| 2922 | SmallVector<CCValAssign, 16> ArgLocs; |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 2923 | CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2924 | getTargetMachine(), ArgLocs, *DAG.getContext()); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2925 | |
Akira Hatanaka | 777a120 | 2012-06-13 18:06:00 +0000 | [diff] [blame] | 2926 | if (CallConv == CallingConv::Fast) |
| 2927 | CCInfo.AnalyzeCallOperands(Outs, CC_Mips_FastCC); |
| 2928 | else if (IsO32) |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 2929 | CCInfo.AnalyzeCallOperands(Outs, CC_MipsO32); |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 2930 | else if (HasMips64) |
| 2931 | AnalyzeMips64CallOperands(CCInfo, Outs); |
Akira Hatanaka | bdd2ce9 | 2011-05-23 21:13:59 +0000 | [diff] [blame] | 2932 | else |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2933 | CCInfo.AnalyzeCallOperands(Outs, CC_Mips); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2934 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2935 | // Get a count of how many bytes are to be pushed on the stack. |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2936 | unsigned NextStackOffset = CCInfo.getNextStackOffset(); |
Akira Hatanaka | 480eeb5 | 2012-07-26 23:27:01 +0000 | [diff] [blame] | 2937 | unsigned StackAlignment = TFL->getStackAlignment(); |
| 2938 | NextStackOffset = RoundUpToAlignment(NextStackOffset, StackAlignment); |
| 2939 | |
| 2940 | // Update size of the maximum argument space. |
| 2941 | // For O32, a minimum of four words (16 bytes) of argument space is |
| 2942 | // allocated. |
| 2943 | if (IsO32 && (CallConv != CallingConv::Fast)) |
| 2944 | NextStackOffset = std::max(NextStackOffset, (unsigned)16); |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2945 | |
Akira Hatanaka | 2b861be | 2012-10-19 21:47:33 +0000 | [diff] [blame^] | 2946 | // Check if it's really possible to do a tail call. |
| 2947 | if (isTailCall) |
| 2948 | isTailCall = IsEligibleForTailCallOptimization(CallConv, NextStackOffset); |
| 2949 | |
| 2950 | if (isTailCall) |
| 2951 | ++NumTailCalls; |
| 2952 | |
Akira Hatanaka | da7f5f1 | 2011-09-19 20:26:02 +0000 | [diff] [blame] | 2953 | // Chain is the output chain of the last Load/Store or CopyToReg node. |
| 2954 | // ByValChain is the output chain of the last Memcpy node created for copying |
| 2955 | // byval arguments to the stack. |
Akira Hatanaka | da7f5f1 | 2011-09-19 20:26:02 +0000 | [diff] [blame] | 2956 | SDValue NextStackOffsetVal = DAG.getIntPtrConstant(NextStackOffset, true); |
Akira Hatanaka | 2b861be | 2012-10-19 21:47:33 +0000 | [diff] [blame^] | 2957 | |
| 2958 | if (!isTailCall) |
| 2959 | Chain = DAG.getCALLSEQ_START(Chain, NextStackOffsetVal); |
Akira Hatanaka | e2d529a | 2012-07-31 18:46:41 +0000 | [diff] [blame] | 2960 | |
| 2961 | SDValue StackPtr = DAG.getCopyFromReg(Chain, dl, |
| 2962 | IsN64 ? Mips::SP_64 : Mips::SP, |
| 2963 | getPointerTy()); |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2964 | |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2965 | // With EABI is it possible to have 16 args on registers. |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 2966 | SmallVector<std::pair<unsigned, SDValue>, 16> RegsToPass; |
| 2967 | SmallVector<SDValue, 8> MemOpChains; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2968 | |
| 2969 | // Walk the register/memloc assignments, inserting copies/loads. |
| 2970 | for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) { |
Dan Gohman | c940365 | 2010-07-07 15:54:55 +0000 | [diff] [blame] | 2971 | SDValue Arg = OutVals[i]; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2972 | CCValAssign &VA = ArgLocs[i]; |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2973 | MVT ValVT = VA.getValVT(), LocVT = VA.getLocVT(); |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2974 | ISD::ArgFlagsTy Flags = Outs[i].Flags; |
| 2975 | |
| 2976 | // ByVal Arg. |
| 2977 | if (Flags.isByVal()) { |
| 2978 | assert(Flags.getByValSize() && |
| 2979 | "ByVal args of size 0 should have been ignored by front-end."); |
| 2980 | if (IsO32) |
Akira Hatanaka | e2d529a | 2012-07-31 18:46:41 +0000 | [diff] [blame] | 2981 | WriteByValArg(Chain, dl, RegsToPass, MemOpChains, StackPtr, |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2982 | MFI, DAG, Arg, VA, Flags, getPointerTy(), |
| 2983 | Subtarget->isLittle()); |
| 2984 | else |
Akira Hatanaka | e2d529a | 2012-07-31 18:46:41 +0000 | [diff] [blame] | 2985 | PassByValArg64(Chain, dl, RegsToPass, MemOpChains, StackPtr, |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2986 | MFI, DAG, Arg, VA, Flags, getPointerTy(), |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2987 | Subtarget->isLittle()); |
| 2988 | continue; |
| 2989 | } |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2990 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2991 | // Promote the value if needed. |
| 2992 | switch (VA.getLocInfo()) { |
Torok Edwin | c23197a | 2009-07-14 16:55:14 +0000 | [diff] [blame] | 2993 | default: llvm_unreachable("Unknown loc info!"); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2994 | case CCValAssign::Full: |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2995 | if (VA.isRegLoc()) { |
| 2996 | if ((ValVT == MVT::f32 && LocVT == MVT::i32) || |
| 2997 | (ValVT == MVT::f64 && LocVT == MVT::i64)) |
| 2998 | Arg = DAG.getNode(ISD::BITCAST, dl, LocVT, Arg); |
| 2999 | else if (ValVT == MVT::f64 && LocVT == MVT::i32) { |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 3000 | SDValue Lo = DAG.getNode(MipsISD::ExtractElementF64, dl, MVT::i32, |
| 3001 | Arg, DAG.getConstant(0, MVT::i32)); |
Akira Hatanaka | 0bf3dfb | 2011-04-15 21:00:26 +0000 | [diff] [blame] | 3002 | SDValue Hi = DAG.getNode(MipsISD::ExtractElementF64, dl, MVT::i32, |
| 3003 | Arg, DAG.getConstant(1, MVT::i32)); |
Akira Hatanaka | 99a2e98 | 2011-04-15 19:52:08 +0000 | [diff] [blame] | 3004 | if (!Subtarget->isLittle()) |
| 3005 | std::swap(Lo, Hi); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 3006 | unsigned LocRegLo = VA.getLocReg(); |
Akira Hatanaka | 373e3a4 | 2011-09-23 00:58:33 +0000 | [diff] [blame] | 3007 | unsigned LocRegHigh = getNextIntArgReg(LocRegLo); |
| 3008 | RegsToPass.push_back(std::make_pair(LocRegLo, Lo)); |
| 3009 | RegsToPass.push_back(std::make_pair(LocRegHigh, Hi)); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 3010 | continue; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3011 | } |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 3012 | } |
| 3013 | break; |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 3014 | case CCValAssign::SExt: |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 3015 | Arg = DAG.getNode(ISD::SIGN_EXTEND, dl, LocVT, Arg); |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 3016 | break; |
| 3017 | case CCValAssign::ZExt: |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 3018 | Arg = DAG.getNode(ISD::ZERO_EXTEND, dl, LocVT, Arg); |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 3019 | break; |
| 3020 | case CCValAssign::AExt: |
Akira Hatanaka | 38bdc57 | 2012-02-17 02:20:26 +0000 | [diff] [blame] | 3021 | Arg = DAG.getNode(ISD::ANY_EXTEND, dl, LocVT, Arg); |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 3022 | break; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3023 | } |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3024 | |
| 3025 | // Arguments that can be passed on register must be kept at |
Bruno Cardoso Lopes | c7db561 | 2007-11-05 03:02:32 +0000 | [diff] [blame] | 3026 | // RegsToPass vector |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3027 | if (VA.isRegLoc()) { |
| 3028 | RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg)); |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 3029 | continue; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3030 | } |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3031 | |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 3032 | // Register can't get to this point... |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 3033 | assert(VA.isMemLoc()); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3034 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3035 | // emit ISD::STORE whichs stores the |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 3036 | // parameter value to a stack Location |
Akira Hatanaka | e2d529a | 2012-07-31 18:46:41 +0000 | [diff] [blame] | 3037 | SDValue PtrOff = DAG.getNode(ISD::ADD, dl, getPointerTy(), StackPtr, |
| 3038 | DAG.getIntPtrConstant(VA.getLocMemOffset())); |
Chris Lattner | 8026a9d | 2010-09-21 17:50:43 +0000 | [diff] [blame] | 3039 | MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 3040 | MachinePointerInfo(), false, false, 0)); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3041 | } |
| 3042 | |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 3043 | // Transform all store nodes into one single node because all store |
| 3044 | // nodes are independent of each other. |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3045 | if (!MemOpChains.empty()) |
| 3046 | Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3047 | &MemOpChains[0], MemOpChains.size()); |
| 3048 | |
Bill Wendling | 056292f | 2008-09-16 21:48:12 +0000 | [diff] [blame] | 3049 | // If the callee is a GlobalAddress/ExternalSymbol node (quite common, every |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3050 | // direct call is) turn it into a TargetGlobalAddress/TargetExternalSymbol |
| 3051 | // node so that legalize doesn't hack it. |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 3052 | unsigned char OpFlag; |
| 3053 | bool IsPICCall = (IsN64 || IsPIC); // true if calls are translated to jalr $25 |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 3054 | bool GlobalOrExternal = false; |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 3055 | SDValue CalleeLo; |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 3056 | |
| 3057 | if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) { |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 3058 | if (IsPICCall && G->getGlobal()->hasInternalLinkage()) { |
| 3059 | OpFlag = IsO32 ? MipsII::MO_GOT : MipsII::MO_GOT_PAGE; |
| 3060 | unsigned char LoFlag = IsO32 ? MipsII::MO_ABS_LO : MipsII::MO_GOT_OFST; |
| 3061 | Callee = DAG.getTargetGlobalAddress(G->getGlobal(), dl, getPointerTy(), 0, |
| 3062 | OpFlag); |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 3063 | CalleeLo = DAG.getTargetGlobalAddress(G->getGlobal(), dl, getPointerTy(), |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 3064 | 0, LoFlag); |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 3065 | } else { |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 3066 | OpFlag = IsPICCall ? MipsII::MO_GOT_CALL : MipsII::MO_NO_FLAG; |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 3067 | Callee = DAG.getTargetGlobalAddress(G->getGlobal(), dl, |
| 3068 | getPointerTy(), 0, OpFlag); |
| 3069 | } |
| 3070 | |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 3071 | GlobalOrExternal = true; |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 3072 | } |
| 3073 | else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) { |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 3074 | if (IsN64 || (!IsO32 && IsPIC)) |
| 3075 | OpFlag = MipsII::MO_GOT_DISP; |
| 3076 | else if (!IsPIC) // !N64 && static |
| 3077 | OpFlag = MipsII::MO_NO_FLAG; |
| 3078 | else // O32 & PIC |
| 3079 | OpFlag = MipsII::MO_GOT_CALL; |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 3080 | Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy(), |
| 3081 | OpFlag); |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 3082 | GlobalOrExternal = true; |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 3083 | } |
| 3084 | |
Akira Hatanaka | cd0f90f | 2011-05-20 02:30:51 +0000 | [diff] [blame] | 3085 | SDValue InFlag; |
| 3086 | |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 3087 | // Create nodes that load address of callee and copy it to T9 |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 3088 | if (IsPICCall) { |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 3089 | if (GlobalOrExternal) { |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 3090 | // Load callee address |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 3091 | Callee = DAG.getNode(MipsISD::Wrapper, dl, getPointerTy(), |
| 3092 | GetGlobalReg(DAG, getPointerTy()), Callee); |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 3093 | SDValue LoadValue = DAG.getLoad(getPointerTy(), dl, DAG.getEntryNode(), |
| 3094 | Callee, MachinePointerInfo::getGOT(), |
Pete Cooper | d752e0f | 2011-11-08 18:42:53 +0000 | [diff] [blame] | 3095 | false, false, false, 0); |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 3096 | |
| 3097 | // Use GOT+LO if callee has internal linkage. |
| 3098 | if (CalleeLo.getNode()) { |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 3099 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, getPointerTy(), CalleeLo); |
| 3100 | Callee = DAG.getNode(ISD::ADD, dl, getPointerTy(), LoadValue, Lo); |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 3101 | } else |
| 3102 | Callee = LoadValue; |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 3103 | } |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 3104 | } |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 3105 | |
Akira Hatanaka | e11246c | 2012-07-26 02:24:43 +0000 | [diff] [blame] | 3106 | // T9 register operand. |
| 3107 | SDValue T9; |
| 3108 | |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 3109 | // T9 should contain the address of the callee function if |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 3110 | // -reloction-model=pic or it is an indirect call. |
| 3111 | if (IsPICCall || !GlobalOrExternal) { |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 3112 | // copy to T9 |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 3113 | unsigned T9Reg = IsN64 ? Mips::T9_64 : Mips::T9; |
| 3114 | Chain = DAG.getCopyToReg(Chain, dl, T9Reg, Callee, SDValue(0, 0)); |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 3115 | InFlag = Chain.getValue(1); |
Akira Hatanaka | e11246c | 2012-07-26 02:24:43 +0000 | [diff] [blame] | 3116 | |
| 3117 | if (Subtarget->inMips16Mode()) |
| 3118 | T9 = DAG.getRegister(T9Reg, getPointerTy()); |
| 3119 | else |
| 3120 | Callee = DAG.getRegister(T9Reg, getPointerTy()); |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 3121 | } |
Bill Wendling | 056292f | 2008-09-16 21:48:12 +0000 | [diff] [blame] | 3122 | |
Akira Hatanaka | 92d4aec | 2012-05-12 03:19:04 +0000 | [diff] [blame] | 3123 | // Insert node "GP copy globalreg" before call to function. |
| 3124 | // Lazy-binding stubs require GP to point to the GOT. |
| 3125 | if (IsPICCall) { |
| 3126 | unsigned GPReg = IsN64 ? Mips::GP_64 : Mips::GP; |
| 3127 | EVT Ty = IsN64 ? MVT::i64 : MVT::i32; |
| 3128 | RegsToPass.push_back(std::make_pair(GPReg, GetGlobalReg(DAG, Ty))); |
| 3129 | } |
| 3130 | |
Akira Hatanaka | cd0f90f | 2011-05-20 02:30:51 +0000 | [diff] [blame] | 3131 | // Build a sequence of copy-to-reg nodes chained together with token |
| 3132 | // chain and flag operands which copy the outgoing args into registers. |
| 3133 | // The InFlag in necessary since all emitted instructions must be |
| 3134 | // stuck together. |
| 3135 | for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) { |
| 3136 | Chain = DAG.getCopyToReg(Chain, dl, RegsToPass[i].first, |
| 3137 | RegsToPass[i].second, InFlag); |
| 3138 | InFlag = Chain.getValue(1); |
| 3139 | } |
| 3140 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3141 | // MipsJmpLink = #chain, #target_address, #opt_in_flags... |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3142 | // = Chain, Callee, Reg#1, Reg#2, ... |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3143 | // |
| 3144 | // Returns a chain & a flag for retval copy to use. |
Chris Lattner | f1b4eaf | 2010-12-21 02:38:05 +0000 | [diff] [blame] | 3145 | SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue); |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 3146 | SmallVector<SDValue, 8> Ops; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3147 | Ops.push_back(Chain); |
Akira Hatanaka | e11246c | 2012-07-26 02:24:43 +0000 | [diff] [blame] | 3148 | Ops.push_back(Callee); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3149 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3150 | // Add argument registers to the end of the list so that they are |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3151 | // known live into the call. |
| 3152 | for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) |
| 3153 | Ops.push_back(DAG.getRegister(RegsToPass[i].first, |
| 3154 | RegsToPass[i].second.getValueType())); |
| 3155 | |
Akira Hatanaka | e11246c | 2012-07-26 02:24:43 +0000 | [diff] [blame] | 3156 | // Add T9 register operand. |
| 3157 | if (T9.getNode()) |
| 3158 | Ops.push_back(T9); |
| 3159 | |
Akira Hatanaka | b2930b9 | 2012-03-01 22:27:29 +0000 | [diff] [blame] | 3160 | // Add a register mask operand representing the call-preserved registers. |
| 3161 | const TargetRegisterInfo *TRI = getTargetMachine().getRegisterInfo(); |
| 3162 | const uint32_t *Mask = TRI->getCallPreservedMask(CallConv); |
| 3163 | assert(Mask && "Missing call preserved mask for calling convention"); |
| 3164 | Ops.push_back(DAG.getRegisterMask(Mask)); |
| 3165 | |
Gabor Greif | ba36cb5 | 2008-08-28 21:40:38 +0000 | [diff] [blame] | 3166 | if (InFlag.getNode()) |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3167 | Ops.push_back(InFlag); |
| 3168 | |
Akira Hatanaka | 2b861be | 2012-10-19 21:47:33 +0000 | [diff] [blame^] | 3169 | if (isTailCall) |
| 3170 | return DAG.getNode(MipsISD::TailCall, dl, MVT::Other, &Ops[0], Ops.size()); |
| 3171 | |
Dale Johannesen | 33c960f | 2009-02-04 20:06:27 +0000 | [diff] [blame] | 3172 | Chain = DAG.getNode(MipsISD::JmpLink, dl, NodeTys, &Ops[0], Ops.size()); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3173 | InFlag = Chain.getValue(1); |
| 3174 | |
Bruno Cardoso Lopes | 3ed6f87 | 2010-01-30 18:32:07 +0000 | [diff] [blame] | 3175 | // Create the CALLSEQ_END node. |
Akira Hatanaka | 480eeb5 | 2012-07-26 23:27:01 +0000 | [diff] [blame] | 3176 | Chain = DAG.getCALLSEQ_END(Chain, NextStackOffsetVal, |
Bruno Cardoso Lopes | 3ed6f87 | 2010-01-30 18:32:07 +0000 | [diff] [blame] | 3177 | DAG.getIntPtrConstant(0, true), InFlag); |
| 3178 | InFlag = Chain.getValue(1); |
| 3179 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3180 | // Handle result values, copying them out of physregs into vregs that we |
| 3181 | // return. |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3182 | return LowerCallResult(Chain, InFlag, CallConv, isVarArg, |
| 3183 | Ins, dl, DAG, InVals); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3184 | } |
| 3185 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3186 | /// LowerCallResult - Lower the result values of a call into the |
| 3187 | /// appropriate copies out of appropriate physical registers. |
| 3188 | SDValue |
| 3189 | MipsTargetLowering::LowerCallResult(SDValue Chain, SDValue InFlag, |
Sandeep Patel | 65c3c8f | 2009-09-02 08:44:58 +0000 | [diff] [blame] | 3190 | CallingConv::ID CallConv, bool isVarArg, |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3191 | const SmallVectorImpl<ISD::InputArg> &Ins, |
| 3192 | DebugLoc dl, SelectionDAG &DAG, |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 3193 | SmallVectorImpl<SDValue> &InVals) const { |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3194 | // Assign locations to each value returned by this call. |
| 3195 | SmallVector<CCValAssign, 16> RVLocs; |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 3196 | CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 3197 | getTargetMachine(), RVLocs, *DAG.getContext()); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 3198 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3199 | CCInfo.AnalyzeCallResult(Ins, RetCC_Mips); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3200 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3201 | // Copy all of the result registers out of their specified physreg. |
| 3202 | for (unsigned i = 0; i != RVLocs.size(); ++i) { |
Dale Johannesen | 33c960f | 2009-02-04 20:06:27 +0000 | [diff] [blame] | 3203 | Chain = DAG.getCopyFromReg(Chain, dl, RVLocs[i].getLocReg(), |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3204 | RVLocs[i].getValVT(), InFlag).getValue(1); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3205 | InFlag = Chain.getValue(2); |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3206 | InVals.push_back(Chain.getValue(0)); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3207 | } |
Bruno Cardoso Lopes | c7db561 | 2007-11-05 03:02:32 +0000 | [diff] [blame] | 3208 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3209 | return Chain; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3210 | } |
| 3211 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 3212 | //===----------------------------------------------------------------------===// |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3213 | // Formal Arguments Calling Convention Implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 3214 | //===----------------------------------------------------------------------===// |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 3215 | static void ReadByValArg(MachineFunction &MF, SDValue Chain, DebugLoc dl, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 3216 | std::vector<SDValue> &OutChains, |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 3217 | SelectionDAG &DAG, unsigned NumWords, SDValue FIN, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 3218 | const CCValAssign &VA, const ISD::ArgFlagsTy &Flags, |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 3219 | const Argument *FuncArg) { |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 3220 | unsigned LocMem = VA.getLocMemOffset(); |
| 3221 | unsigned FirstWord = LocMem / 4; |
| 3222 | |
| 3223 | // copy register A0 - A3 to frame object |
| 3224 | for (unsigned i = 0; i < NumWords; ++i) { |
| 3225 | unsigned CurWord = FirstWord + i; |
| 3226 | if (CurWord >= O32IntRegsSize) |
| 3227 | break; |
| 3228 | |
| 3229 | unsigned SrcReg = O32IntRegs[CurWord]; |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 3230 | unsigned Reg = AddLiveIn(MF, SrcReg, &Mips::CPURegsRegClass); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 3231 | SDValue StorePtr = DAG.getNode(ISD::ADD, dl, MVT::i32, FIN, |
| 3232 | DAG.getConstant(i * 4, MVT::i32)); |
| 3233 | SDValue Store = DAG.getStore(Chain, dl, DAG.getRegister(Reg, MVT::i32), |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 3234 | StorePtr, MachinePointerInfo(FuncArg, i * 4), |
| 3235 | false, false, 0); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 3236 | OutChains.push_back(Store); |
| 3237 | } |
| 3238 | } |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3239 | |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 3240 | // Create frame object on stack and copy registers used for byval passing to it. |
| 3241 | static unsigned |
| 3242 | CopyMips64ByValRegs(MachineFunction &MF, SDValue Chain, DebugLoc dl, |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 3243 | std::vector<SDValue> &OutChains, SelectionDAG &DAG, |
| 3244 | const CCValAssign &VA, const ISD::ArgFlagsTy &Flags, |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 3245 | MachineFrameInfo *MFI, bool IsRegLoc, |
| 3246 | SmallVectorImpl<SDValue> &InVals, MipsFunctionInfo *MipsFI, |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 3247 | EVT PtrTy, const Argument *FuncArg) { |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 3248 | const uint16_t *Reg = Mips64IntRegs + 8; |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 3249 | int FOOffset; // Frame object offset from virtual frame pointer. |
| 3250 | |
| 3251 | if (IsRegLoc) { |
| 3252 | Reg = std::find(Mips64IntRegs, Mips64IntRegs + 8, VA.getLocReg()); |
| 3253 | FOOffset = (Reg - Mips64IntRegs) * 8 - 8 * 8; |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 3254 | } |
| 3255 | else |
| 3256 | FOOffset = VA.getLocMemOffset(); |
| 3257 | |
| 3258 | // Create frame object. |
| 3259 | unsigned NumRegs = (Flags.getByValSize() + 7) / 8; |
| 3260 | unsigned LastFI = MFI->CreateFixedObject(NumRegs * 8, FOOffset, true); |
| 3261 | SDValue FIN = DAG.getFrameIndex(LastFI, PtrTy); |
| 3262 | InVals.push_back(FIN); |
| 3263 | |
| 3264 | // Copy arg registers. |
| 3265 | for (unsigned I = 0; (Reg != Mips64IntRegs + 8) && (I < NumRegs); |
| 3266 | ++Reg, ++I) { |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 3267 | unsigned VReg = AddLiveIn(MF, *Reg, &Mips::CPU64RegsRegClass); |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 3268 | SDValue StorePtr = DAG.getNode(ISD::ADD, dl, PtrTy, FIN, |
| 3269 | DAG.getConstant(I * 8, PtrTy)); |
| 3270 | SDValue Store = DAG.getStore(Chain, dl, DAG.getRegister(VReg, MVT::i64), |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 3271 | StorePtr, MachinePointerInfo(FuncArg, I * 8), |
| 3272 | false, false, 0); |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 3273 | OutChains.push_back(Store); |
| 3274 | } |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 3275 | |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 3276 | return LastFI; |
| 3277 | } |
| 3278 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3279 | /// LowerFormalArguments - transform physical registers into virtual registers |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 3280 | /// and generate load operations for arguments places on the stack. |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3281 | SDValue |
| 3282 | MipsTargetLowering::LowerFormalArguments(SDValue Chain, |
Akira Hatanaka | 0bf3dfb | 2011-04-15 21:00:26 +0000 | [diff] [blame] | 3283 | CallingConv::ID CallConv, |
| 3284 | bool isVarArg, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 3285 | const SmallVectorImpl<ISD::InputArg> &Ins, |
Akira Hatanaka | 0bf3dfb | 2011-04-15 21:00:26 +0000 | [diff] [blame] | 3286 | DebugLoc dl, SelectionDAG &DAG, |
| 3287 | SmallVectorImpl<SDValue> &InVals) |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 3288 | const { |
Bruno Cardoso Lopes | f7f3b50 | 2008-08-04 07:12:52 +0000 | [diff] [blame] | 3289 | MachineFunction &MF = DAG.getMachineFunction(); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3290 | MachineFrameInfo *MFI = MF.getFrameInfo(); |
Bruno Cardoso Lopes | a2b1bb5 | 2007-08-28 05:08:16 +0000 | [diff] [blame] | 3291 | MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>(); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 3292 | |
Dan Gohman | 1e93df6 | 2010-04-17 14:41:14 +0000 | [diff] [blame] | 3293 | MipsFI->setVarArgsFrameIndex(0); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3294 | |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 3295 | // Used with vargs to acumulate store chains. |
| 3296 | std::vector<SDValue> OutChains; |
| 3297 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3298 | // Assign locations to all of the incoming arguments. |
| 3299 | SmallVector<CCValAssign, 16> ArgLocs; |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 3300 | CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 3301 | getTargetMachine(), ArgLocs, *DAG.getContext()); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 3302 | |
Akira Hatanaka | 777a120 | 2012-06-13 18:06:00 +0000 | [diff] [blame] | 3303 | if (CallConv == CallingConv::Fast) |
| 3304 | CCInfo.AnalyzeFormalArguments(Ins, CC_Mips_FastCC); |
| 3305 | else if (IsO32) |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 3306 | CCInfo.AnalyzeFormalArguments(Ins, CC_MipsO32); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 3307 | else |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3308 | CCInfo.AnalyzeFormalArguments(Ins, CC_Mips); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 3309 | |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 3310 | Function::const_arg_iterator FuncArg = |
| 3311 | DAG.getMachineFunction().getFunction()->arg_begin(); |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 3312 | int LastFI = 0;// MipsFI->LastInArgFI is 0 at the entry of this function. |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 3313 | |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 3314 | for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i, ++FuncArg) { |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3315 | CCValAssign &VA = ArgLocs[i]; |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 3316 | EVT ValVT = VA.getValVT(); |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 3317 | ISD::ArgFlagsTy Flags = Ins[i].Flags; |
| 3318 | bool IsRegLoc = VA.isRegLoc(); |
| 3319 | |
| 3320 | if (Flags.isByVal()) { |
| 3321 | assert(Flags.getByValSize() && |
| 3322 | "ByVal args of size 0 should have been ignored by front-end."); |
| 3323 | if (IsO32) { |
| 3324 | unsigned NumWords = (Flags.getByValSize() + 3) / 4; |
| 3325 | LastFI = MFI->CreateFixedObject(NumWords * 4, VA.getLocMemOffset(), |
| 3326 | true); |
| 3327 | SDValue FIN = DAG.getFrameIndex(LastFI, getPointerTy()); |
| 3328 | InVals.push_back(FIN); |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 3329 | ReadByValArg(MF, Chain, dl, OutChains, DAG, NumWords, FIN, VA, Flags, |
| 3330 | &*FuncArg); |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 3331 | } else // N32/64 |
| 3332 | LastFI = CopyMips64ByValRegs(MF, Chain, dl, OutChains, DAG, VA, Flags, |
| 3333 | MFI, IsRegLoc, InVals, MipsFI, |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 3334 | getPointerTy(), &*FuncArg); |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 3335 | continue; |
| 3336 | } |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3337 | |
| 3338 | // Arguments stored on registers |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 3339 | if (IsRegLoc) { |
Owen Anderson | e50ed30 | 2009-08-10 22:56:29 +0000 | [diff] [blame] | 3340 | EVT RegVT = VA.getLocVT(); |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 3341 | unsigned ArgReg = VA.getLocReg(); |
Craig Topper | 44d2382 | 2012-02-22 05:59:10 +0000 | [diff] [blame] | 3342 | const TargetRegisterClass *RC; |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 3343 | |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 3344 | if (RegVT == MVT::i32) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 3345 | RC = &Mips::CPURegsRegClass; |
Akira Hatanaka | 9593484 | 2011-09-24 01:34:44 +0000 | [diff] [blame] | 3346 | else if (RegVT == MVT::i64) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 3347 | RC = &Mips::CPU64RegsRegClass; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3348 | else if (RegVT == MVT::f32) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 3349 | RC = &Mips::FGR32RegClass; |
Akira Hatanaka | 09dd60f | 2011-09-26 21:37:50 +0000 | [diff] [blame] | 3350 | else if (RegVT == MVT::f64) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 3351 | RC = HasMips64 ? &Mips::FGR64RegClass : &Mips::AFGR64RegClass; |
Akira Hatanaka | 09dd60f | 2011-09-26 21:37:50 +0000 | [diff] [blame] | 3352 | else |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 3353 | llvm_unreachable("RegVT not supported by FormalArguments Lowering"); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3354 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3355 | // Transform the arguments stored on |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3356 | // physical registers into virtual ones |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 3357 | unsigned Reg = AddLiveIn(DAG.getMachineFunction(), ArgReg, RC); |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3358 | SDValue ArgValue = DAG.getCopyFromReg(Chain, dl, Reg, RegVT); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3359 | |
| 3360 | // If this is an 8 or 16-bit value, it has been passed promoted |
| 3361 | // to 32 bits. Insert an assert[sz]ext to capture this, then |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3362 | // truncate to the right size. |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 3363 | if (VA.getLocInfo() != CCValAssign::Full) { |
Chris Lattner | d401507 | 2009-03-26 05:28:14 +0000 | [diff] [blame] | 3364 | unsigned Opcode = 0; |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 3365 | if (VA.getLocInfo() == CCValAssign::SExt) |
| 3366 | Opcode = ISD::AssertSext; |
| 3367 | else if (VA.getLocInfo() == CCValAssign::ZExt) |
| 3368 | Opcode = ISD::AssertZext; |
Chris Lattner | d401507 | 2009-03-26 05:28:14 +0000 | [diff] [blame] | 3369 | if (Opcode) |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3370 | ArgValue = DAG.getNode(Opcode, dl, RegVT, ArgValue, |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 3371 | DAG.getValueType(ValVT)); |
| 3372 | ArgValue = DAG.getNode(ISD::TRUNCATE, dl, ValVT, ArgValue); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 3373 | } |
| 3374 | |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 3375 | // Handle floating point arguments passed in integer registers. |
| 3376 | if ((RegVT == MVT::i32 && ValVT == MVT::f32) || |
| 3377 | (RegVT == MVT::i64 && ValVT == MVT::f64)) |
| 3378 | ArgValue = DAG.getNode(ISD::BITCAST, dl, ValVT, ArgValue); |
| 3379 | else if (IsO32 && RegVT == MVT::i32 && ValVT == MVT::f64) { |
| 3380 | unsigned Reg2 = AddLiveIn(DAG.getMachineFunction(), |
| 3381 | getNextIntArgReg(ArgReg), RC); |
| 3382 | SDValue ArgValue2 = DAG.getCopyFromReg(Chain, dl, Reg2, RegVT); |
| 3383 | if (!Subtarget->isLittle()) |
| 3384 | std::swap(ArgValue, ArgValue2); |
| 3385 | ArgValue = DAG.getNode(MipsISD::BuildPairF64, dl, MVT::f64, |
| 3386 | ArgValue, ArgValue2); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 3387 | } |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3388 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3389 | InVals.push_back(ArgValue); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 3390 | } else { // VA.isRegLoc() |
| 3391 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3392 | // sanity check |
| 3393 | assert(VA.isMemLoc()); |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 3394 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3395 | // The stack pointer offset is relative to the caller stack frame. |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 3396 | LastFI = MFI->CreateFixedObject(ValVT.getSizeInBits()/8, |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 3397 | VA.getLocMemOffset(), true); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3398 | |
| 3399 | // Create load nodes to retrieve arguments from the stack |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 3400 | SDValue FIN = DAG.getFrameIndex(LastFI, getPointerTy()); |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 3401 | InVals.push_back(DAG.getLoad(ValVT, dl, Chain, FIN, |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 3402 | MachinePointerInfo::getFixedStack(LastFI), |
Pete Cooper | d752e0f | 2011-11-08 18:42:53 +0000 | [diff] [blame] | 3403 | false, false, false, 0)); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3404 | } |
| 3405 | } |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 3406 | |
| 3407 | // The mips ABIs for returning structs by value requires that we copy |
| 3408 | // the sret argument into $v0 for the return. Save the argument into |
| 3409 | // a virtual register so that we can access it from the return points. |
| 3410 | if (DAG.getMachineFunction().getFunction()->hasStructRetAttr()) { |
| 3411 | unsigned Reg = MipsFI->getSRetReturnReg(); |
| 3412 | if (!Reg) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 3413 | Reg = MF.getRegInfo().createVirtualRegister(getRegClassFor(MVT::i32)); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 3414 | MipsFI->setSRetReturnReg(Reg); |
| 3415 | } |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3416 | SDValue Copy = DAG.getCopyToReg(DAG.getEntryNode(), dl, Reg, InVals[0]); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 3417 | Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Copy, Chain); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 3418 | } |
| 3419 | |
Akira Hatanaka | bad53f4 | 2011-11-14 19:01:09 +0000 | [diff] [blame] | 3420 | if (isVarArg) { |
| 3421 | unsigned NumOfRegs = IsO32 ? 4 : 8; |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 3422 | const uint16_t *ArgRegs = IsO32 ? O32IntRegs : Mips64IntRegs; |
Akira Hatanaka | bad53f4 | 2011-11-14 19:01:09 +0000 | [diff] [blame] | 3423 | unsigned Idx = CCInfo.getFirstUnallocated(ArgRegs, NumOfRegs); |
| 3424 | int FirstRegSlotOffset = IsO32 ? 0 : -64 ; // offset of $a0's slot. |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 3425 | const TargetRegisterClass *RC = IsO32 ? |
| 3426 | (const TargetRegisterClass*)&Mips::CPURegsRegClass : |
| 3427 | (const TargetRegisterClass*)&Mips::CPU64RegsRegClass; |
Akira Hatanaka | bad53f4 | 2011-11-14 19:01:09 +0000 | [diff] [blame] | 3428 | unsigned RegSize = RC->getSize(); |
| 3429 | int RegSlotOffset = FirstRegSlotOffset + Idx * RegSize; |
| 3430 | |
| 3431 | // Offset of the first variable argument from stack pointer. |
| 3432 | int FirstVaArgOffset; |
| 3433 | |
| 3434 | if (IsO32 || (Idx == NumOfRegs)) { |
| 3435 | FirstVaArgOffset = |
| 3436 | (CCInfo.getNextStackOffset() + RegSize - 1) / RegSize * RegSize; |
| 3437 | } else |
| 3438 | FirstVaArgOffset = RegSlotOffset; |
| 3439 | |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 3440 | // Record the frame index of the first variable argument |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 3441 | // which is a value necessary to VASTART. |
Akira Hatanaka | bad53f4 | 2011-11-14 19:01:09 +0000 | [diff] [blame] | 3442 | LastFI = MFI->CreateFixedObject(RegSize, FirstVaArgOffset, true); |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 3443 | MipsFI->setVarArgsFrameIndex(LastFI); |
Akira Hatanaka | edacba8 | 2011-05-25 17:32:06 +0000 | [diff] [blame] | 3444 | |
Akira Hatanaka | bad53f4 | 2011-11-14 19:01:09 +0000 | [diff] [blame] | 3445 | // Copy the integer registers that have not been used for argument passing |
| 3446 | // to the argument register save area. For O32, the save area is allocated |
| 3447 | // in the caller's stack frame, while for N32/64, it is allocated in the |
| 3448 | // callee's stack frame. |
| 3449 | for (int StackOffset = RegSlotOffset; |
| 3450 | Idx < NumOfRegs; ++Idx, StackOffset += RegSize) { |
| 3451 | unsigned Reg = AddLiveIn(DAG.getMachineFunction(), ArgRegs[Idx], RC); |
| 3452 | SDValue ArgValue = DAG.getCopyFromReg(Chain, dl, Reg, |
| 3453 | MVT::getIntegerVT(RegSize * 8)); |
| 3454 | LastFI = MFI->CreateFixedObject(RegSize, StackOffset, true); |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 3455 | SDValue PtrOff = DAG.getFrameIndex(LastFI, getPointerTy()); |
| 3456 | OutChains.push_back(DAG.getStore(Chain, dl, ArgValue, PtrOff, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 3457 | MachinePointerInfo(), false, false, 0)); |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 3458 | } |
| 3459 | } |
| 3460 | |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 3461 | MipsFI->setLastInArgFI(LastFI); |
| 3462 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3463 | // All stores are grouped in one node to allow the matching between |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 3464 | // the size of Ins and InVals. This only happens when on varg functions |
| 3465 | if (!OutChains.empty()) { |
| 3466 | OutChains.push_back(Chain); |
| 3467 | Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, |
| 3468 | &OutChains[0], OutChains.size()); |
| 3469 | } |
| 3470 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3471 | return Chain; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3472 | } |
| 3473 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 3474 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3475 | // Return Value Calling Convention Implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 3476 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3477 | |
Akira Hatanaka | 97d9f08 | 2012-10-10 01:27:09 +0000 | [diff] [blame] | 3478 | bool |
| 3479 | MipsTargetLowering::CanLowerReturn(CallingConv::ID CallConv, |
| 3480 | MachineFunction &MF, bool isVarArg, |
| 3481 | const SmallVectorImpl<ISD::OutputArg> &Outs, |
| 3482 | LLVMContext &Context) const { |
| 3483 | SmallVector<CCValAssign, 16> RVLocs; |
| 3484 | CCState CCInfo(CallConv, isVarArg, MF, getTargetMachine(), |
| 3485 | RVLocs, Context); |
| 3486 | return CCInfo.CheckReturn(Outs, RetCC_Mips); |
| 3487 | } |
| 3488 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3489 | SDValue |
| 3490 | MipsTargetLowering::LowerReturn(SDValue Chain, |
Sandeep Patel | 65c3c8f | 2009-09-02 08:44:58 +0000 | [diff] [blame] | 3491 | CallingConv::ID CallConv, bool isVarArg, |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3492 | const SmallVectorImpl<ISD::OutputArg> &Outs, |
Dan Gohman | c940365 | 2010-07-07 15:54:55 +0000 | [diff] [blame] | 3493 | const SmallVectorImpl<SDValue> &OutVals, |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 3494 | DebugLoc dl, SelectionDAG &DAG) const { |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3495 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3496 | // CCValAssign - represent the assignment of |
| 3497 | // the return value to a location |
| 3498 | SmallVector<CCValAssign, 16> RVLocs; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3499 | |
| 3500 | // CCState - Info about the registers and stack slot. |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 3501 | CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), |
Akira Hatanaka | 864f660 | 2012-06-14 21:10:56 +0000 | [diff] [blame] | 3502 | getTargetMachine(), RVLocs, *DAG.getContext()); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3503 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 3504 | // Analize return values. |
| 3505 | CCInfo.AnalyzeReturn(Outs, RetCC_Mips); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3506 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3507 | // If this is the first return lowered for this function, add |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3508 | // the regs to the liveout set for the function. |
Chris Lattner | 84bc542 | 2007-12-31 04:13:23 +0000 | [diff] [blame] | 3509 | if (DAG.getMachineFunction().getRegInfo().liveout_empty()) { |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3510 | for (unsigned i = 0; i != RVLocs.size(); ++i) |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 3511 | if (RVLocs[i].isRegLoc()) |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 3512 | DAG.getMachineFunction().getRegInfo().addLiveOut(RVLocs[i].getLocReg()); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3513 | } |
| 3514 | |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 3515 | SDValue Flag; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3516 | |
| 3517 | // Copy the result values into the output registers. |
| 3518 | for (unsigned i = 0; i != RVLocs.size(); ++i) { |
| 3519 | CCValAssign &VA = RVLocs[i]; |
| 3520 | assert(VA.isRegLoc() && "Can only return in registers!"); |
| 3521 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 3522 | Chain = DAG.getCopyToReg(Chain, dl, VA.getLocReg(), OutVals[i], Flag); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3523 | |
| 3524 | // guarantee that all emitted copies are |
| 3525 | // stuck together, avoiding something bad |
| 3526 | Flag = Chain.getValue(1); |
| 3527 | } |
| 3528 | |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 3529 | // The mips ABIs for returning structs by value requires that we copy |
| 3530 | // the sret argument into $v0 for the return. We saved the argument into |
| 3531 | // a virtual register in the entry block, so now we copy the value out |
| 3532 | // and into $v0. |
| 3533 | if (DAG.getMachineFunction().getFunction()->hasStructRetAttr()) { |
| 3534 | MachineFunction &MF = DAG.getMachineFunction(); |
| 3535 | MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>(); |
| 3536 | unsigned Reg = MipsFI->getSRetReturnReg(); |
| 3537 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3538 | if (!Reg) |
Torok Edwin | c23197a | 2009-07-14 16:55:14 +0000 | [diff] [blame] | 3539 | llvm_unreachable("sret virtual register not created in the entry block"); |
Dale Johannesen | a05dca4 | 2009-02-04 23:02:30 +0000 | [diff] [blame] | 3540 | SDValue Val = DAG.getCopyFromReg(Chain, dl, Reg, getPointerTy()); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 3541 | |
Dale Johannesen | a05dca4 | 2009-02-04 23:02:30 +0000 | [diff] [blame] | 3542 | Chain = DAG.getCopyToReg(Chain, dl, Mips::V0, Val, Flag); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 3543 | Flag = Chain.getValue(1); |
| 3544 | } |
| 3545 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3546 | // Return on Mips is always a "jr $ra" |
Gabor Greif | ba36cb5 | 2008-08-28 21:40:38 +0000 | [diff] [blame] | 3547 | if (Flag.getNode()) |
Akira Hatanaka | 182ef6f | 2012-07-10 00:19:06 +0000 | [diff] [blame] | 3548 | return DAG.getNode(MipsISD::Ret, dl, MVT::Other, Chain, Flag); |
| 3549 | |
| 3550 | // Return Void |
| 3551 | return DAG.getNode(MipsISD::Ret, dl, MVT::Other, Chain); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 3552 | } |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3553 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 3554 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3555 | // Mips Inline Assembly Support |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 3556 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3557 | |
| 3558 | /// getConstraintType - Given a constraint letter, return the type of |
| 3559 | /// constraint it is for this target. |
| 3560 | MipsTargetLowering::ConstraintType MipsTargetLowering:: |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3561 | getConstraintType(const std::string &Constraint) const |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3562 | { |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3563 | // Mips specific constrainy |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 3564 | // GCC config/mips/constraints.md |
| 3565 | // |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3566 | // 'd' : An address register. Equivalent to r |
| 3567 | // unless generating MIPS16 code. |
| 3568 | // 'y' : Equivalent to r; retained for |
| 3569 | // backwards compatibility. |
Eric Christopher | 1d5a392 | 2012-05-07 06:25:10 +0000 | [diff] [blame] | 3570 | // 'c' : A register suitable for use in an indirect |
| 3571 | // jump. This will always be $25 for -mabicalls. |
Eric Christopher | af97f73 | 2012-05-07 06:25:19 +0000 | [diff] [blame] | 3572 | // 'l' : The lo register. 1 word storage. |
| 3573 | // 'x' : The hilo register pair. Double word storage. |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3574 | if (Constraint.size() == 1) { |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3575 | switch (Constraint[0]) { |
| 3576 | default : break; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3577 | case 'd': |
| 3578 | case 'y': |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 3579 | case 'f': |
Eric Christopher | 1d5a392 | 2012-05-07 06:25:10 +0000 | [diff] [blame] | 3580 | case 'c': |
Eric Christopher | 4adbefe | 2012-05-07 06:25:15 +0000 | [diff] [blame] | 3581 | case 'l': |
Eric Christopher | af97f73 | 2012-05-07 06:25:19 +0000 | [diff] [blame] | 3582 | case 'x': |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3583 | return C_RegisterClass; |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3584 | } |
| 3585 | } |
| 3586 | return TargetLowering::getConstraintType(Constraint); |
| 3587 | } |
| 3588 | |
John Thompson | 44ab89e | 2010-10-29 17:29:13 +0000 | [diff] [blame] | 3589 | /// Examine constraint type and operand type and determine a weight value. |
| 3590 | /// This object must already have been set up with the operand type |
| 3591 | /// and the current alternative constraint selected. |
| 3592 | TargetLowering::ConstraintWeight |
| 3593 | MipsTargetLowering::getSingleConstraintMatchWeight( |
| 3594 | AsmOperandInfo &info, const char *constraint) const { |
| 3595 | ConstraintWeight weight = CW_Invalid; |
| 3596 | Value *CallOperandVal = info.CallOperandVal; |
| 3597 | // If we don't have a value, we can't do a match, |
| 3598 | // but allow it at the lowest weight. |
| 3599 | if (CallOperandVal == NULL) |
| 3600 | return CW_Default; |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 3601 | Type *type = CallOperandVal->getType(); |
John Thompson | 44ab89e | 2010-10-29 17:29:13 +0000 | [diff] [blame] | 3602 | // Look at the constraint type. |
| 3603 | switch (*constraint) { |
| 3604 | default: |
| 3605 | weight = TargetLowering::getSingleConstraintMatchWeight(info, constraint); |
| 3606 | break; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3607 | case 'd': |
| 3608 | case 'y': |
John Thompson | 44ab89e | 2010-10-29 17:29:13 +0000 | [diff] [blame] | 3609 | if (type->isIntegerTy()) |
| 3610 | weight = CW_Register; |
| 3611 | break; |
| 3612 | case 'f': |
| 3613 | if (type->isFloatTy()) |
| 3614 | weight = CW_Register; |
| 3615 | break; |
Eric Christopher | 1d5a392 | 2012-05-07 06:25:10 +0000 | [diff] [blame] | 3616 | case 'c': // $25 for indirect jumps |
Eric Christopher | 4adbefe | 2012-05-07 06:25:15 +0000 | [diff] [blame] | 3617 | case 'l': // lo register |
Eric Christopher | af97f73 | 2012-05-07 06:25:19 +0000 | [diff] [blame] | 3618 | case 'x': // hilo register pair |
Eric Christopher | 1d5a392 | 2012-05-07 06:25:10 +0000 | [diff] [blame] | 3619 | if (type->isIntegerTy()) |
| 3620 | weight = CW_SpecificReg; |
| 3621 | break; |
Eric Christopher | 50ab039 | 2012-05-07 03:13:32 +0000 | [diff] [blame] | 3622 | case 'I': // signed 16 bit immediate |
Eric Christopher | e5076d4 | 2012-05-07 03:13:42 +0000 | [diff] [blame] | 3623 | case 'J': // integer zero |
Eric Christopher | f49f846 | 2012-05-07 05:46:29 +0000 | [diff] [blame] | 3624 | case 'K': // unsigned 16 bit immediate |
Eric Christopher | 5ac47bb | 2012-05-07 05:46:37 +0000 | [diff] [blame] | 3625 | case 'L': // signed 32 bit immediate where lower 16 bits are 0 |
Eric Christopher | 60cfc79 | 2012-05-07 05:46:43 +0000 | [diff] [blame] | 3626 | case 'N': // immediate in the range of -65535 to -1 (inclusive) |
Eric Christopher | 1ce2034 | 2012-05-07 05:46:48 +0000 | [diff] [blame] | 3627 | case 'O': // signed 15 bit immediate (+- 16383) |
Eric Christopher | 54412a7 | 2012-05-07 06:25:02 +0000 | [diff] [blame] | 3628 | case 'P': // immediate in the range of 65535 to 1 (inclusive) |
Eric Christopher | 50ab039 | 2012-05-07 03:13:32 +0000 | [diff] [blame] | 3629 | if (isa<ConstantInt>(CallOperandVal)) |
| 3630 | weight = CW_Constant; |
| 3631 | break; |
John Thompson | 44ab89e | 2010-10-29 17:29:13 +0000 | [diff] [blame] | 3632 | } |
| 3633 | return weight; |
| 3634 | } |
| 3635 | |
Eric Christopher | 38d6426 | 2011-06-29 19:33:04 +0000 | [diff] [blame] | 3636 | /// Given a register class constraint, like 'r', if this corresponds directly |
| 3637 | /// to an LLVM register class, return a register of 0 and the register class |
| 3638 | /// pointer. |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3639 | std::pair<unsigned, const TargetRegisterClass*> MipsTargetLowering:: |
Owen Anderson | e50ed30 | 2009-08-10 22:56:29 +0000 | [diff] [blame] | 3640 | getRegForInlineAsmConstraint(const std::string &Constraint, EVT VT) const |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3641 | { |
| 3642 | if (Constraint.size() == 1) { |
| 3643 | switch (Constraint[0]) { |
Eric Christopher | 314aff1 | 2011-06-29 19:04:31 +0000 | [diff] [blame] | 3644 | case 'd': // Address register. Same as 'r' unless generating MIPS16 code. |
| 3645 | case 'y': // Same as 'r'. Exists for compatibility. |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3646 | case 'r': |
Akira Hatanaka | afc945b | 2012-09-12 23:27:55 +0000 | [diff] [blame] | 3647 | if (VT == MVT::i32 || VT == MVT::i16 || VT == MVT::i8) { |
| 3648 | if (Subtarget->inMips16Mode()) |
| 3649 | return std::make_pair(0U, &Mips::CPU16RegsRegClass); |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 3650 | return std::make_pair(0U, &Mips::CPURegsRegClass); |
Akira Hatanaka | afc945b | 2012-09-12 23:27:55 +0000 | [diff] [blame] | 3651 | } |
Jack Carter | 10de025 | 2012-07-02 23:35:23 +0000 | [diff] [blame] | 3652 | if (VT == MVT::i64 && !HasMips64) |
| 3653 | return std::make_pair(0U, &Mips::CPURegsRegClass); |
Eric Christopher | 0ed1f76 | 2012-05-07 03:13:22 +0000 | [diff] [blame] | 3654 | if (VT == MVT::i64 && HasMips64) |
| 3655 | return std::make_pair(0U, &Mips::CPU64RegsRegClass); |
| 3656 | // This will generate an error message |
| 3657 | return std::make_pair(0u, static_cast<const TargetRegisterClass*>(0)); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 3658 | case 'f': |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 3659 | if (VT == MVT::f32) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 3660 | return std::make_pair(0U, &Mips::FGR32RegClass); |
Akira Hatanaka | cb9dd72 | 2012-01-04 02:45:01 +0000 | [diff] [blame] | 3661 | if ((VT == MVT::f64) && (!Subtarget->isSingleFloat())) { |
| 3662 | if (Subtarget->isFP64bit()) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame] | 3663 | return std::make_pair(0U, &Mips::FGR64RegClass); |
| 3664 | return std::make_pair(0U, &Mips::AFGR64RegClass); |
Akira Hatanaka | cb9dd72 | 2012-01-04 02:45:01 +0000 | [diff] [blame] | 3665 | } |
Eric Christopher | 1d5a392 | 2012-05-07 06:25:10 +0000 | [diff] [blame] | 3666 | break; |
| 3667 | case 'c': // register suitable for indirect jump |
| 3668 | if (VT == MVT::i32) |
| 3669 | return std::make_pair((unsigned)Mips::T9, &Mips::CPURegsRegClass); |
| 3670 | assert(VT == MVT::i64 && "Unexpected type."); |
| 3671 | return std::make_pair((unsigned)Mips::T9_64, &Mips::CPU64RegsRegClass); |
Eric Christopher | 4adbefe | 2012-05-07 06:25:15 +0000 | [diff] [blame] | 3672 | case 'l': // register suitable for indirect jump |
| 3673 | if (VT == MVT::i32) |
| 3674 | return std::make_pair((unsigned)Mips::LO, &Mips::HILORegClass); |
| 3675 | return std::make_pair((unsigned)Mips::LO64, &Mips::HILO64RegClass); |
Eric Christopher | af97f73 | 2012-05-07 06:25:19 +0000 | [diff] [blame] | 3676 | case 'x': // register suitable for indirect jump |
| 3677 | // Fixme: Not triggering the use of both hi and low |
| 3678 | // This will generate an error message |
| 3679 | return std::make_pair(0u, static_cast<const TargetRegisterClass*>(0)); |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3680 | } |
| 3681 | } |
| 3682 | return TargetLowering::getRegForInlineAsmConstraint(Constraint, VT); |
| 3683 | } |
| 3684 | |
Eric Christopher | 50ab039 | 2012-05-07 03:13:32 +0000 | [diff] [blame] | 3685 | /// LowerAsmOperandForConstraint - Lower the specified operand into the Ops |
| 3686 | /// vector. If it is invalid, don't add anything to Ops. |
| 3687 | void MipsTargetLowering::LowerAsmOperandForConstraint(SDValue Op, |
| 3688 | std::string &Constraint, |
| 3689 | std::vector<SDValue>&Ops, |
| 3690 | SelectionDAG &DAG) const { |
| 3691 | SDValue Result(0, 0); |
| 3692 | |
| 3693 | // Only support length 1 constraints for now. |
| 3694 | if (Constraint.length() > 1) return; |
| 3695 | |
| 3696 | char ConstraintLetter = Constraint[0]; |
| 3697 | switch (ConstraintLetter) { |
| 3698 | default: break; // This will fall through to the generic implementation |
| 3699 | case 'I': // Signed 16 bit constant |
| 3700 | // If this fails, the parent routine will give an error |
| 3701 | if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) { |
| 3702 | EVT Type = Op.getValueType(); |
| 3703 | int64_t Val = C->getSExtValue(); |
| 3704 | if (isInt<16>(Val)) { |
| 3705 | Result = DAG.getTargetConstant(Val, Type); |
| 3706 | break; |
| 3707 | } |
| 3708 | } |
| 3709 | return; |
Eric Christopher | e5076d4 | 2012-05-07 03:13:42 +0000 | [diff] [blame] | 3710 | case 'J': // integer zero |
| 3711 | if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) { |
| 3712 | EVT Type = Op.getValueType(); |
| 3713 | int64_t Val = C->getZExtValue(); |
| 3714 | if (Val == 0) { |
| 3715 | Result = DAG.getTargetConstant(0, Type); |
| 3716 | break; |
| 3717 | } |
| 3718 | } |
| 3719 | return; |
Eric Christopher | f49f846 | 2012-05-07 05:46:29 +0000 | [diff] [blame] | 3720 | case 'K': // unsigned 16 bit immediate |
| 3721 | if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) { |
| 3722 | EVT Type = Op.getValueType(); |
| 3723 | uint64_t Val = (uint64_t)C->getZExtValue(); |
| 3724 | if (isUInt<16>(Val)) { |
| 3725 | Result = DAG.getTargetConstant(Val, Type); |
| 3726 | break; |
| 3727 | } |
| 3728 | } |
| 3729 | return; |
Eric Christopher | 5ac47bb | 2012-05-07 05:46:37 +0000 | [diff] [blame] | 3730 | case 'L': // signed 32 bit immediate where lower 16 bits are 0 |
| 3731 | if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) { |
| 3732 | EVT Type = Op.getValueType(); |
| 3733 | int64_t Val = C->getSExtValue(); |
| 3734 | if ((isInt<32>(Val)) && ((Val & 0xffff) == 0)){ |
| 3735 | Result = DAG.getTargetConstant(Val, Type); |
| 3736 | break; |
| 3737 | } |
| 3738 | } |
| 3739 | return; |
Eric Christopher | 60cfc79 | 2012-05-07 05:46:43 +0000 | [diff] [blame] | 3740 | case 'N': // immediate in the range of -65535 to -1 (inclusive) |
| 3741 | if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) { |
| 3742 | EVT Type = Op.getValueType(); |
| 3743 | int64_t Val = C->getSExtValue(); |
| 3744 | if ((Val >= -65535) && (Val <= -1)) { |
| 3745 | Result = DAG.getTargetConstant(Val, Type); |
| 3746 | break; |
| 3747 | } |
| 3748 | } |
| 3749 | return; |
Eric Christopher | 1ce2034 | 2012-05-07 05:46:48 +0000 | [diff] [blame] | 3750 | case 'O': // signed 15 bit immediate |
| 3751 | if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) { |
| 3752 | EVT Type = Op.getValueType(); |
| 3753 | int64_t Val = C->getSExtValue(); |
| 3754 | if ((isInt<15>(Val))) { |
| 3755 | Result = DAG.getTargetConstant(Val, Type); |
| 3756 | break; |
| 3757 | } |
| 3758 | } |
| 3759 | return; |
Eric Christopher | 54412a7 | 2012-05-07 06:25:02 +0000 | [diff] [blame] | 3760 | case 'P': // immediate in the range of 1 to 65535 (inclusive) |
| 3761 | if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) { |
| 3762 | EVT Type = Op.getValueType(); |
| 3763 | int64_t Val = C->getSExtValue(); |
| 3764 | if ((Val <= 65535) && (Val >= 1)) { |
| 3765 | Result = DAG.getTargetConstant(Val, Type); |
| 3766 | break; |
| 3767 | } |
| 3768 | } |
| 3769 | return; |
Eric Christopher | 50ab039 | 2012-05-07 03:13:32 +0000 | [diff] [blame] | 3770 | } |
| 3771 | |
| 3772 | if (Result.getNode()) { |
| 3773 | Ops.push_back(Result); |
| 3774 | return; |
| 3775 | } |
| 3776 | |
| 3777 | TargetLowering::LowerAsmOperandForConstraint(Op, Constraint, Ops, DAG); |
| 3778 | } |
| 3779 | |
Dan Gohman | 6520e20 | 2008-10-18 02:06:02 +0000 | [diff] [blame] | 3780 | bool |
| 3781 | MipsTargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const { |
| 3782 | // The Mips target isn't yet aware of offsets. |
| 3783 | return false; |
| 3784 | } |
Evan Cheng | eb2f969 | 2009-10-27 19:56:55 +0000 | [diff] [blame] | 3785 | |
Akira Hatanaka | e193b32 | 2012-06-13 19:33:32 +0000 | [diff] [blame] | 3786 | EVT MipsTargetLowering::getOptimalMemOpType(uint64_t Size, unsigned DstAlign, |
| 3787 | unsigned SrcAlign, bool IsZeroVal, |
| 3788 | bool MemcpyStrSrc, |
| 3789 | MachineFunction &MF) const { |
| 3790 | if (Subtarget->hasMips64()) |
| 3791 | return MVT::i64; |
| 3792 | |
| 3793 | return MVT::i32; |
| 3794 | } |
| 3795 | |
Evan Cheng | a1eaa3c | 2009-10-28 01:43:28 +0000 | [diff] [blame] | 3796 | bool MipsTargetLowering::isFPImmLegal(const APFloat &Imm, EVT VT) const { |
| 3797 | if (VT != MVT::f32 && VT != MVT::f64) |
| 3798 | return false; |
Bruno Cardoso Lopes | 6b90282 | 2011-01-18 19:41:41 +0000 | [diff] [blame] | 3799 | if (Imm.isNegZero()) |
| 3800 | return false; |
Evan Cheng | eb2f969 | 2009-10-27 19:56:55 +0000 | [diff] [blame] | 3801 | return Imm.isZero(); |
| 3802 | } |
Akira Hatanaka | 6c2cf8b | 2012-02-03 04:33:00 +0000 | [diff] [blame] | 3803 | |
| 3804 | unsigned MipsTargetLowering::getJumpTableEncoding() const { |
| 3805 | if (IsN64) |
| 3806 | return MachineJumpTableInfo::EK_GPRel64BlockAddress; |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 3807 | |
Akira Hatanaka | 6c2cf8b | 2012-02-03 04:33:00 +0000 | [diff] [blame] | 3808 | return TargetLowering::getJumpTableEncoding(); |
| 3809 | } |