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" |
| 28 | #include "llvm/CodeGen/CallingConvLower.h" |
| 29 | #include "llvm/CodeGen/MachineFrameInfo.h" |
| 30 | #include "llvm/CodeGen/MachineFunction.h" |
| 31 | #include "llvm/CodeGen/MachineInstrBuilder.h" |
Chris Lattner | 84bc542 | 2007-12-31 04:13:23 +0000 | [diff] [blame] | 32 | #include "llvm/CodeGen/MachineRegisterInfo.h" |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 33 | #include "llvm/CodeGen/SelectionDAGISel.h" |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 34 | #include "llvm/CodeGen/ValueTypes.h" |
| 35 | #include "llvm/Support/Debug.h" |
Torok Edwin | c25e758 | 2009-07-11 20:10:48 +0000 | [diff] [blame] | 36 | #include "llvm/Support/ErrorHandling.h" |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 37 | using namespace llvm; |
| 38 | |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 39 | // 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] | 40 | // mask (Pos), and return true. |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 41 | // For example, if I is 0x003ff800, (Pos, Size) = (11, 11). |
Akira Hatanaka | 854a7db | 2011-08-19 22:59:00 +0000 | [diff] [blame] | 42 | static bool IsShiftedMask(uint64_t I, uint64_t &Pos, uint64_t &Size) { |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 43 | if (!isShiftedMask_64(I)) |
Akira Hatanaka | 854a7db | 2011-08-19 22:59:00 +0000 | [diff] [blame] | 44 | return false; |
Akira Hatanaka | bb15e11 | 2011-08-17 02:05:42 +0000 | [diff] [blame] | 45 | |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 46 | Size = CountPopulation_64(I); |
| 47 | Pos = CountTrailingZeros_64(I); |
Akira Hatanaka | dbe9a31 | 2011-08-18 20:07:42 +0000 | [diff] [blame] | 48 | return true; |
Akira Hatanaka | bb15e11 | 2011-08-17 02:05:42 +0000 | [diff] [blame] | 49 | } |
| 50 | |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 51 | static SDValue GetGlobalReg(SelectionDAG &DAG, EVT Ty) { |
| 52 | MipsFunctionInfo *FI = DAG.getMachineFunction().getInfo<MipsFunctionInfo>(); |
| 53 | return DAG.getRegister(FI->getGlobalBaseReg(), Ty); |
| 54 | } |
| 55 | |
Chris Lattner | f014412 | 2009-07-28 03:13:23 +0000 | [diff] [blame] | 56 | const char *MipsTargetLowering::getTargetNodeName(unsigned Opcode) const { |
| 57 | switch (Opcode) { |
Akira Hatanaka | bdd2ce9 | 2011-05-23 21:13:59 +0000 | [diff] [blame] | 58 | case MipsISD::JmpLink: return "MipsISD::JmpLink"; |
| 59 | case MipsISD::Hi: return "MipsISD::Hi"; |
| 60 | case MipsISD::Lo: return "MipsISD::Lo"; |
| 61 | case MipsISD::GPRel: return "MipsISD::GPRel"; |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 62 | case MipsISD::ThreadPointer: return "MipsISD::ThreadPointer"; |
Akira Hatanaka | bdd2ce9 | 2011-05-23 21:13:59 +0000 | [diff] [blame] | 63 | case MipsISD::Ret: return "MipsISD::Ret"; |
| 64 | case MipsISD::FPBrcond: return "MipsISD::FPBrcond"; |
| 65 | case MipsISD::FPCmp: return "MipsISD::FPCmp"; |
| 66 | case MipsISD::CMovFP_T: return "MipsISD::CMovFP_T"; |
| 67 | case MipsISD::CMovFP_F: return "MipsISD::CMovFP_F"; |
| 68 | case MipsISD::FPRound: return "MipsISD::FPRound"; |
| 69 | case MipsISD::MAdd: return "MipsISD::MAdd"; |
| 70 | case MipsISD::MAddu: return "MipsISD::MAddu"; |
| 71 | case MipsISD::MSub: return "MipsISD::MSub"; |
| 72 | case MipsISD::MSubu: return "MipsISD::MSubu"; |
| 73 | case MipsISD::DivRem: return "MipsISD::DivRem"; |
| 74 | case MipsISD::DivRemU: return "MipsISD::DivRemU"; |
| 75 | case MipsISD::BuildPairF64: return "MipsISD::BuildPairF64"; |
| 76 | case MipsISD::ExtractElementF64: return "MipsISD::ExtractElementF64"; |
Akira Hatanaka | bfcb83f | 2011-12-12 22:38:19 +0000 | [diff] [blame] | 77 | case MipsISD::Wrapper: return "MipsISD::Wrapper"; |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 78 | case MipsISD::DynAlloc: return "MipsISD::DynAlloc"; |
Akira Hatanaka | db54826 | 2011-07-19 23:30:50 +0000 | [diff] [blame] | 79 | case MipsISD::Sync: return "MipsISD::Sync"; |
Akira Hatanaka | bb15e11 | 2011-08-17 02:05:42 +0000 | [diff] [blame] | 80 | case MipsISD::Ext: return "MipsISD::Ext"; |
| 81 | case MipsISD::Ins: return "MipsISD::Ins"; |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 82 | default: return NULL; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 83 | } |
| 84 | } |
| 85 | |
| 86 | MipsTargetLowering:: |
Chris Lattner | f014412 | 2009-07-28 03:13:23 +0000 | [diff] [blame] | 87 | MipsTargetLowering(MipsTargetMachine &TM) |
Akira Hatanaka | 8b4198d | 2011-09-26 21:47:02 +0000 | [diff] [blame] | 88 | : TargetLowering(TM, new MipsTargetObjectFile()), |
| 89 | Subtarget(&TM.getSubtarget<MipsSubtarget>()), |
Akira Hatanaka | 2ec69fa | 2011-10-28 18:47:24 +0000 | [diff] [blame] | 90 | HasMips64(Subtarget->hasMips64()), IsN64(Subtarget->isABI_N64()), |
| 91 | IsO32(Subtarget->isABI_O32()) { |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 92 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 93 | // Mips does not have i1 type, so use i32 for |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 94 | // setcc operations results (slt, sgt, ...). |
Duncan Sands | 0322808 | 2008-11-23 15:47:28 +0000 | [diff] [blame] | 95 | setBooleanContents(ZeroOrOneBooleanContent); |
Duncan Sands | 28b77e9 | 2011-09-06 19:07:46 +0000 | [diff] [blame] | 96 | setBooleanVectorContents(ZeroOrOneBooleanContent); // FIXME: Is this correct? |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 97 | |
| 98 | // Set up the register classes |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 99 | addRegisterClass(MVT::i32, &Mips::CPURegsRegClass); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 100 | |
Akira Hatanaka | 9593484 | 2011-09-24 01:34:44 +0000 | [diff] [blame] | 101 | if (HasMips64) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 102 | addRegisterClass(MVT::i64, &Mips::CPU64RegsRegClass); |
Akira Hatanaka | 9593484 | 2011-09-24 01:34:44 +0000 | [diff] [blame] | 103 | |
Akira Hatanaka | b0e7af7 | 2012-01-04 19:29:11 +0000 | [diff] [blame] | 104 | if (!TM.Options.UseSoftFloat) { |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 105 | addRegisterClass(MVT::f32, &Mips::FGR32RegClass); |
Akira Hatanaka | b0e7af7 | 2012-01-04 19:29:11 +0000 | [diff] [blame] | 106 | |
| 107 | // When dealing with single precision only, use libcalls |
| 108 | if (!Subtarget->isSingleFloat()) { |
| 109 | if (HasMips64) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 110 | addRegisterClass(MVT::f64, &Mips::FGR64RegClass); |
Akira Hatanaka | b0e7af7 | 2012-01-04 19:29:11 +0000 | [diff] [blame] | 111 | else |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 112 | addRegisterClass(MVT::f64, &Mips::AFGR64RegClass); |
Akira Hatanaka | b0e7af7 | 2012-01-04 19:29:11 +0000 | [diff] [blame] | 113 | } |
Akira Hatanaka | 792016b | 2011-09-23 18:28:39 +0000 | [diff] [blame] | 114 | } |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 115 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 116 | // Load extented operations for i1 types must be promoted |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 117 | setLoadExtAction(ISD::EXTLOAD, MVT::i1, Promote); |
| 118 | setLoadExtAction(ISD::ZEXTLOAD, MVT::i1, Promote); |
| 119 | setLoadExtAction(ISD::SEXTLOAD, MVT::i1, Promote); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 120 | |
Eli Friedman | 6055a6a | 2009-07-17 04:07:24 +0000 | [diff] [blame] | 121 | // MIPS doesn't have extending float->double load/store |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 122 | setLoadExtAction(ISD::EXTLOAD, MVT::f32, Expand); |
| 123 | setTruncStoreAction(MVT::f64, MVT::f32, Expand); |
Eli Friedman | 10a3659 | 2009-07-17 02:28:12 +0000 | [diff] [blame] | 124 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 125 | // Used by legalize types to correctly generate the setcc result. |
| 126 | // Without this, every float setcc comes with a AND/OR with the result, |
| 127 | // 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] | 128 | // which is used implicitly by brcond and select operations. |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 129 | AddPromotedToType(ISD::SETCC, MVT::i1, MVT::i32); |
Bruno Cardoso Lopes | 7728377 | 2008-07-31 18:31:28 +0000 | [diff] [blame] | 130 | |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 131 | // Mips Custom Operations |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 132 | setOperationAction(ISD::GlobalAddress, MVT::i32, Custom); |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 133 | setOperationAction(ISD::BlockAddress, MVT::i32, Custom); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 134 | setOperationAction(ISD::GlobalTLSAddress, MVT::i32, Custom); |
| 135 | setOperationAction(ISD::JumpTable, MVT::i32, Custom); |
| 136 | setOperationAction(ISD::ConstantPool, MVT::i32, Custom); |
| 137 | setOperationAction(ISD::SELECT, MVT::f32, Custom); |
| 138 | setOperationAction(ISD::SELECT, MVT::f64, Custom); |
| 139 | setOperationAction(ISD::SELECT, MVT::i32, Custom); |
Akira Hatanaka | 0a40c23 | 2012-03-09 23:46:03 +0000 | [diff] [blame] | 140 | setOperationAction(ISD::SETCC, MVT::f32, Custom); |
| 141 | setOperationAction(ISD::SETCC, MVT::f64, Custom); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 142 | setOperationAction(ISD::BRCOND, MVT::Other, Custom); |
| 143 | setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32, Custom); |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 144 | setOperationAction(ISD::VASTART, MVT::Other, Custom); |
Akira Hatanaka | d229b7b | 2012-03-10 00:03:50 +0000 | [diff] [blame] | 145 | setOperationAction(ISD::FCOPYSIGN, MVT::f32, Custom); |
| 146 | setOperationAction(ISD::FCOPYSIGN, MVT::f64, Custom); |
| 147 | setOperationAction(ISD::MEMBARRIER, MVT::Other, Custom); |
| 148 | setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Custom); |
| 149 | |
Akira Hatanaka | c12a6e6 | 2012-04-11 22:49:04 +0000 | [diff] [blame] | 150 | if (!TM.Options.NoNaNsFPMath) { |
| 151 | setOperationAction(ISD::FABS, MVT::f32, Custom); |
| 152 | setOperationAction(ISD::FABS, MVT::f64, Custom); |
| 153 | } |
| 154 | |
Akira Hatanaka | d229b7b | 2012-03-10 00:03:50 +0000 | [diff] [blame] | 155 | if (HasMips64) { |
| 156 | setOperationAction(ISD::GlobalAddress, MVT::i64, Custom); |
| 157 | setOperationAction(ISD::BlockAddress, MVT::i64, Custom); |
| 158 | setOperationAction(ISD::GlobalTLSAddress, MVT::i64, Custom); |
| 159 | setOperationAction(ISD::JumpTable, MVT::i64, Custom); |
| 160 | setOperationAction(ISD::ConstantPool, MVT::i64, Custom); |
| 161 | setOperationAction(ISD::SELECT, MVT::i64, Custom); |
| 162 | setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i64, Custom); |
| 163 | } |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 164 | |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 165 | setOperationAction(ISD::SDIV, MVT::i32, Expand); |
| 166 | setOperationAction(ISD::SREM, MVT::i32, Expand); |
| 167 | setOperationAction(ISD::UDIV, MVT::i32, Expand); |
| 168 | setOperationAction(ISD::UREM, MVT::i32, Expand); |
Akira Hatanaka | dda4a07 | 2011-10-03 21:06:13 +0000 | [diff] [blame] | 169 | setOperationAction(ISD::SDIV, MVT::i64, Expand); |
| 170 | setOperationAction(ISD::SREM, MVT::i64, Expand); |
| 171 | setOperationAction(ISD::UDIV, MVT::i64, Expand); |
| 172 | setOperationAction(ISD::UREM, MVT::i64, Expand); |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 173 | |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 174 | // Operations not directly supported by Mips. |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 175 | setOperationAction(ISD::BR_JT, MVT::Other, Expand); |
| 176 | setOperationAction(ISD::BR_CC, MVT::Other, Expand); |
| 177 | setOperationAction(ISD::SELECT_CC, MVT::Other, Expand); |
| 178 | setOperationAction(ISD::UINT_TO_FP, MVT::i32, Expand); |
Akira Hatanaka | e1bcd6b | 2011-12-20 23:40:56 +0000 | [diff] [blame] | 179 | setOperationAction(ISD::UINT_TO_FP, MVT::i64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 180 | setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand); |
Akira Hatanaka | e1bcd6b | 2011-12-20 23:40:56 +0000 | [diff] [blame] | 181 | setOperationAction(ISD::FP_TO_UINT, MVT::i64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 182 | setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1, Expand); |
| 183 | setOperationAction(ISD::CTPOP, MVT::i32, Expand); |
Akira Hatanaka | 7f16274 | 2011-12-21 00:14:05 +0000 | [diff] [blame] | 184 | setOperationAction(ISD::CTPOP, MVT::i64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 185 | setOperationAction(ISD::CTTZ, MVT::i32, Expand); |
Akira Hatanaka | 7f16274 | 2011-12-21 00:14:05 +0000 | [diff] [blame] | 186 | setOperationAction(ISD::CTTZ, MVT::i64, Expand); |
Chandler Carruth | 63974b2 | 2011-12-13 01:56:10 +0000 | [diff] [blame] | 187 | setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i32, Expand); |
| 188 | setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i64, Expand); |
| 189 | setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i32, Expand); |
| 190 | setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 191 | setOperationAction(ISD::ROTL, MVT::i32, Expand); |
Akira Hatanaka | c7bafe9 | 2011-09-30 18:51:46 +0000 | [diff] [blame] | 192 | setOperationAction(ISD::ROTL, MVT::i64, Expand); |
Bruno Cardoso Lopes | 908b6dd | 2010-12-09 17:32:30 +0000 | [diff] [blame] | 193 | |
Akira Hatanaka | 5663344 | 2011-09-20 23:53:09 +0000 | [diff] [blame] | 194 | if (!Subtarget->hasMips32r2()) |
Bruno Cardoso Lopes | 908b6dd | 2010-12-09 17:32:30 +0000 | [diff] [blame] | 195 | setOperationAction(ISD::ROTR, MVT::i32, Expand); |
| 196 | |
Akira Hatanaka | c7bafe9 | 2011-09-30 18:51:46 +0000 | [diff] [blame] | 197 | if (!Subtarget->hasMips64r2()) |
| 198 | setOperationAction(ISD::ROTR, MVT::i64, Expand); |
| 199 | |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 200 | setOperationAction(ISD::SHL_PARTS, MVT::i32, Expand); |
| 201 | setOperationAction(ISD::SRA_PARTS, MVT::i32, Expand); |
| 202 | setOperationAction(ISD::SRL_PARTS, MVT::i32, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 203 | setOperationAction(ISD::FSIN, MVT::f32, Expand); |
Bruno Cardoso Lopes | 5d6fb5d | 2011-03-04 18:54:14 +0000 | [diff] [blame] | 204 | setOperationAction(ISD::FSIN, MVT::f64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 205 | setOperationAction(ISD::FCOS, MVT::f32, Expand); |
Bruno Cardoso Lopes | 5d6fb5d | 2011-03-04 18:54:14 +0000 | [diff] [blame] | 206 | setOperationAction(ISD::FCOS, MVT::f64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 207 | setOperationAction(ISD::FPOWI, MVT::f32, Expand); |
| 208 | setOperationAction(ISD::FPOW, MVT::f32, Expand); |
Akira Hatanaka | 46da136 | 2011-05-23 22:23:58 +0000 | [diff] [blame] | 209 | setOperationAction(ISD::FPOW, MVT::f64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 210 | setOperationAction(ISD::FLOG, MVT::f32, Expand); |
| 211 | setOperationAction(ISD::FLOG2, MVT::f32, Expand); |
| 212 | setOperationAction(ISD::FLOG10, MVT::f32, Expand); |
| 213 | setOperationAction(ISD::FEXP, MVT::f32, Expand); |
Cameron Zwarich | 3339084 | 2011-07-08 21:39:21 +0000 | [diff] [blame] | 214 | setOperationAction(ISD::FMA, MVT::f32, Expand); |
| 215 | setOperationAction(ISD::FMA, MVT::f64, Expand); |
Akira Hatanaka | 21ecc2f | 2012-03-29 18:43:11 +0000 | [diff] [blame] | 216 | setOperationAction(ISD::FREM, MVT::f32, Expand); |
| 217 | setOperationAction(ISD::FREM, MVT::f64, Expand); |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 218 | |
Akira Hatanaka | 1cc6333 | 2012-04-11 22:59:08 +0000 | [diff] [blame] | 219 | if (!TM.Options.NoNaNsFPMath) { |
| 220 | setOperationAction(ISD::FNEG, MVT::f32, Expand); |
| 221 | setOperationAction(ISD::FNEG, MVT::f64, Expand); |
| 222 | } |
| 223 | |
Akira Hatanaka | cf0cd80 | 2011-05-26 18:59:03 +0000 | [diff] [blame] | 224 | setOperationAction(ISD::EXCEPTIONADDR, MVT::i32, Expand); |
Akira Hatanaka | 590baca | 2012-02-02 03:13:40 +0000 | [diff] [blame] | 225 | setOperationAction(ISD::EXCEPTIONADDR, MVT::i64, Expand); |
Akira Hatanaka | cf0cd80 | 2011-05-26 18:59:03 +0000 | [diff] [blame] | 226 | setOperationAction(ISD::EHSELECTION, MVT::i32, Expand); |
Akira Hatanaka | 590baca | 2012-02-02 03:13:40 +0000 | [diff] [blame] | 227 | setOperationAction(ISD::EHSELECTION, MVT::i64, Expand); |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 228 | |
Bruno Cardoso Lopes | 954dac0 | 2011-03-09 19:22:22 +0000 | [diff] [blame] | 229 | setOperationAction(ISD::VAARG, MVT::Other, Expand); |
| 230 | setOperationAction(ISD::VACOPY, MVT::Other, Expand); |
| 231 | setOperationAction(ISD::VAEND, MVT::Other, Expand); |
| 232 | |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 233 | // Use the default for now |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 234 | setOperationAction(ISD::STACKSAVE, MVT::Other, Expand); |
| 235 | setOperationAction(ISD::STACKRESTORE, MVT::Other, Expand); |
Eli Friedman | 1464846 | 2011-07-27 22:21:52 +0000 | [diff] [blame] | 236 | |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 237 | setOperationAction(ISD::ATOMIC_LOAD, MVT::i32, Expand); |
| 238 | setOperationAction(ISD::ATOMIC_LOAD, MVT::i64, Expand); |
| 239 | setOperationAction(ISD::ATOMIC_STORE, MVT::i32, Expand); |
| 240 | setOperationAction(ISD::ATOMIC_STORE, MVT::i64, Expand); |
Eli Friedman | 4db5aca | 2011-08-29 18:23:02 +0000 | [diff] [blame] | 241 | |
Eli Friedman | 26689ac | 2011-08-03 21:06:02 +0000 | [diff] [blame] | 242 | setInsertFencesForAtomic(true); |
| 243 | |
Bruno Cardoso Lopes | ea9d4d6 | 2008-08-04 06:44:31 +0000 | [diff] [blame] | 244 | if (Subtarget->isSingleFloat()) |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 245 | setOperationAction(ISD::SELECT_CC, MVT::f64, Expand); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 246 | |
Bruno Cardoso Lopes | 7728f7e | 2008-07-09 05:32:22 +0000 | [diff] [blame] | 247 | if (!Subtarget->hasSEInReg()) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 248 | setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i8, Expand); |
| 249 | setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i16, Expand); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 250 | } |
| 251 | |
Akira Hatanaka | c79507a | 2011-12-21 00:20:27 +0000 | [diff] [blame] | 252 | if (!Subtarget->hasBitCount()) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 253 | setOperationAction(ISD::CTLZ, MVT::i32, Expand); |
Akira Hatanaka | c79507a | 2011-12-21 00:20:27 +0000 | [diff] [blame] | 254 | setOperationAction(ISD::CTLZ, MVT::i64, Expand); |
| 255 | } |
Bruno Cardoso Lopes | 65ad452 | 2008-08-08 06:16:31 +0000 | [diff] [blame] | 256 | |
Akira Hatanaka | c0ea043 | 2011-12-20 23:56:43 +0000 | [diff] [blame] | 257 | if (!Subtarget->hasSwap()) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 258 | setOperationAction(ISD::BSWAP, MVT::i32, Expand); |
Akira Hatanaka | c0ea043 | 2011-12-20 23:56:43 +0000 | [diff] [blame] | 259 | setOperationAction(ISD::BSWAP, MVT::i64, Expand); |
| 260 | } |
Bruno Cardoso Lopes | 739e441 | 2008-08-13 07:13:40 +0000 | [diff] [blame] | 261 | |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 262 | setTargetDAGCombine(ISD::ADDE); |
| 263 | setTargetDAGCombine(ISD::SUBE); |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 264 | setTargetDAGCombine(ISD::SDIVREM); |
| 265 | setTargetDAGCombine(ISD::UDIVREM); |
Akira Hatanaka | ee8c3b0 | 2012-03-08 03:26:37 +0000 | [diff] [blame] | 266 | setTargetDAGCombine(ISD::SELECT); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 267 | setTargetDAGCombine(ISD::AND); |
| 268 | setTargetDAGCombine(ISD::OR); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 269 | |
Akira Hatanaka | 5fdf500 | 2012-03-08 01:59:33 +0000 | [diff] [blame] | 270 | setMinFunctionAlignment(HasMips64 ? 3 : 2); |
Eli Friedman | fc5d305 | 2011-05-06 20:34:06 +0000 | [diff] [blame] | 271 | |
Akira Hatanaka | 3f5b107 | 2012-02-02 03:17:04 +0000 | [diff] [blame] | 272 | setStackPointerRegisterToSaveRestore(IsN64 ? Mips::SP_64 : Mips::SP); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 273 | computeRegisterProperties(); |
Akira Hatanaka | cf0cd80 | 2011-05-26 18:59:03 +0000 | [diff] [blame] | 274 | |
Akira Hatanaka | 590baca | 2012-02-02 03:13:40 +0000 | [diff] [blame] | 275 | setExceptionPointerRegister(IsN64 ? Mips::A0_64 : Mips::A0); |
| 276 | setExceptionSelectorRegister(IsN64 ? Mips::A1_64 : Mips::A1); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 277 | } |
| 278 | |
Akira Hatanaka | 5c21c9e | 2011-08-12 21:30:06 +0000 | [diff] [blame] | 279 | bool MipsTargetLowering::allowsUnalignedMemoryAccesses(EVT VT) const { |
Akira Hatanaka | 511961a | 2011-08-17 18:49:18 +0000 | [diff] [blame] | 280 | MVT::SimpleValueType SVT = VT.getSimpleVT().SimpleTy; |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 281 | |
Akira Hatanaka | 44b6c71 | 2012-02-28 02:55:02 +0000 | [diff] [blame] | 282 | switch (SVT) { |
| 283 | case MVT::i64: |
| 284 | case MVT::i32: |
| 285 | case MVT::i16: |
| 286 | return true; |
| 287 | case MVT::f32: |
Akira Hatanaka | 44b6c71 | 2012-02-28 02:55:02 +0000 | [diff] [blame] | 288 | return Subtarget->hasMips32r2Or64(); |
| 289 | default: |
| 290 | return false; |
| 291 | } |
Akira Hatanaka | 5c21c9e | 2011-08-12 21:30:06 +0000 | [diff] [blame] | 292 | } |
| 293 | |
Duncan Sands | 28b77e9 | 2011-09-06 19:07:46 +0000 | [diff] [blame] | 294 | EVT MipsTargetLowering::getSetCCResultType(EVT VT) const { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 295 | return MVT::i32; |
Scott Michel | 5b8f82e | 2008-03-10 15:42:14 +0000 | [diff] [blame] | 296 | } |
| 297 | |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 298 | // SelectMadd - |
| 299 | // Transforms a subgraph in CurDAG if the following pattern is found: |
| 300 | // (addc multLo, Lo0), (adde multHi, Hi0), |
| 301 | // where, |
| 302 | // multHi/Lo: product of multiplication |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 303 | // Lo0: initial value of Lo register |
| 304 | // Hi0: initial value of Hi register |
Akira Hatanaka | 81bd78b | 2011-03-30 21:15:35 +0000 | [diff] [blame] | 305 | // Return true if pattern matching was successful. |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 306 | static bool SelectMadd(SDNode* ADDENode, SelectionDAG* CurDAG) { |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 307 | // 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] | 308 | // for the matching to be successful. |
| 309 | SDNode* ADDCNode = ADDENode->getOperand(2).getNode(); |
| 310 | |
| 311 | if (ADDCNode->getOpcode() != ISD::ADDC) |
| 312 | return false; |
| 313 | |
| 314 | SDValue MultHi = ADDENode->getOperand(0); |
| 315 | SDValue MultLo = ADDCNode->getOperand(0); |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 316 | SDNode* MultNode = MultHi.getNode(); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 317 | unsigned MultOpc = MultHi.getOpcode(); |
| 318 | |
| 319 | // MultHi and MultLo must be generated by the same node, |
| 320 | if (MultLo.getNode() != MultNode) |
| 321 | return false; |
| 322 | |
| 323 | // and it must be a multiplication. |
| 324 | if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI) |
| 325 | return false; |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 326 | |
| 327 | // MultLo amd MultHi must be the first and second output of MultNode |
| 328 | // respectively. |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 329 | if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0) |
| 330 | return false; |
| 331 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 332 | // 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] | 333 | // of the values of MultNode, in which case MultNode will be removed in later |
| 334 | // phases. |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 335 | // If there exist users other than ADDENode or ADDCNode, this function returns |
| 336 | // 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] | 337 | // 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] | 338 | // produced. |
| 339 | if (!MultHi.hasOneUse() || !MultLo.hasOneUse()) |
| 340 | return false; |
| 341 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 342 | SDValue Chain = CurDAG->getEntryNode(); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 343 | DebugLoc dl = ADDENode->getDebugLoc(); |
| 344 | |
| 345 | // create MipsMAdd(u) node |
| 346 | MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MAddu : MipsISD::MAdd; |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 347 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 348 | SDValue MAdd = CurDAG->getNode(MultOpc, dl, MVT::Glue, |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 349 | MultNode->getOperand(0),// Factor 0 |
| 350 | MultNode->getOperand(1),// Factor 1 |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 351 | ADDCNode->getOperand(1),// Lo0 |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 352 | ADDENode->getOperand(1));// Hi0 |
| 353 | |
| 354 | // create CopyFromReg nodes |
| 355 | SDValue CopyFromLo = CurDAG->getCopyFromReg(Chain, dl, Mips::LO, MVT::i32, |
| 356 | MAdd); |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 357 | SDValue CopyFromHi = CurDAG->getCopyFromReg(CopyFromLo.getValue(1), dl, |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 358 | Mips::HI, MVT::i32, |
| 359 | CopyFromLo.getValue(2)); |
| 360 | |
| 361 | // replace uses of adde and addc here |
| 362 | if (!SDValue(ADDCNode, 0).use_empty()) |
| 363 | CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDCNode, 0), CopyFromLo); |
| 364 | |
| 365 | if (!SDValue(ADDENode, 0).use_empty()) |
| 366 | CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDENode, 0), CopyFromHi); |
| 367 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 368 | return true; |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 369 | } |
| 370 | |
| 371 | // SelectMsub - |
| 372 | // Transforms a subgraph in CurDAG if the following pattern is found: |
| 373 | // (addc Lo0, multLo), (sube Hi0, multHi), |
| 374 | // where, |
| 375 | // multHi/Lo: product of multiplication |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 376 | // Lo0: initial value of Lo register |
| 377 | // Hi0: initial value of Hi register |
Akira Hatanaka | 81bd78b | 2011-03-30 21:15:35 +0000 | [diff] [blame] | 378 | // Return true if pattern matching was successful. |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 379 | static bool SelectMsub(SDNode* SUBENode, SelectionDAG* CurDAG) { |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 380 | // 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] | 381 | // for the matching to be successful. |
| 382 | SDNode* SUBCNode = SUBENode->getOperand(2).getNode(); |
| 383 | |
| 384 | if (SUBCNode->getOpcode() != ISD::SUBC) |
| 385 | return false; |
| 386 | |
| 387 | SDValue MultHi = SUBENode->getOperand(1); |
| 388 | SDValue MultLo = SUBCNode->getOperand(1); |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 389 | SDNode* MultNode = MultHi.getNode(); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 390 | unsigned MultOpc = MultHi.getOpcode(); |
| 391 | |
| 392 | // MultHi and MultLo must be generated by the same node, |
| 393 | if (MultLo.getNode() != MultNode) |
| 394 | return false; |
| 395 | |
| 396 | // and it must be a multiplication. |
| 397 | if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI) |
| 398 | return false; |
| 399 | |
| 400 | // MultLo amd MultHi must be the first and second output of MultNode |
| 401 | // respectively. |
| 402 | if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0) |
| 403 | return false; |
| 404 | |
| 405 | // Transform this to a MSUB only if SUBENode and SUBCNode are the only users |
| 406 | // of the values of MultNode, in which case MultNode will be removed in later |
| 407 | // phases. |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 408 | // If there exist users other than SUBENode or SUBCNode, this function returns |
| 409 | // 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] | 410 | // instruction node rather than a pair of MULT and MSUB instructions being |
| 411 | // produced. |
| 412 | if (!MultHi.hasOneUse() || !MultLo.hasOneUse()) |
| 413 | return false; |
| 414 | |
| 415 | SDValue Chain = CurDAG->getEntryNode(); |
| 416 | DebugLoc dl = SUBENode->getDebugLoc(); |
| 417 | |
| 418 | // create MipsSub(u) node |
| 419 | MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MSubu : MipsISD::MSub; |
| 420 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 421 | SDValue MSub = CurDAG->getNode(MultOpc, dl, MVT::Glue, |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 422 | MultNode->getOperand(0),// Factor 0 |
| 423 | MultNode->getOperand(1),// Factor 1 |
| 424 | SUBCNode->getOperand(0),// Lo0 |
| 425 | SUBENode->getOperand(0));// Hi0 |
| 426 | |
| 427 | // create CopyFromReg nodes |
| 428 | SDValue CopyFromLo = CurDAG->getCopyFromReg(Chain, dl, Mips::LO, MVT::i32, |
| 429 | MSub); |
| 430 | SDValue CopyFromHi = CurDAG->getCopyFromReg(CopyFromLo.getValue(1), dl, |
| 431 | Mips::HI, MVT::i32, |
| 432 | CopyFromLo.getValue(2)); |
| 433 | |
| 434 | // replace uses of sube and subc here |
| 435 | if (!SDValue(SUBCNode, 0).use_empty()) |
| 436 | CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBCNode, 0), CopyFromLo); |
| 437 | |
| 438 | if (!SDValue(SUBENode, 0).use_empty()) |
| 439 | CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBENode, 0), CopyFromHi); |
| 440 | |
| 441 | return true; |
| 442 | } |
| 443 | |
| 444 | static SDValue PerformADDECombine(SDNode *N, SelectionDAG& DAG, |
| 445 | TargetLowering::DAGCombinerInfo &DCI, |
| 446 | const MipsSubtarget* Subtarget) { |
| 447 | if (DCI.isBeforeLegalize()) |
| 448 | return SDValue(); |
| 449 | |
Akira Hatanaka | e184fec | 2011-11-11 04:18:21 +0000 | [diff] [blame] | 450 | if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 && |
| 451 | SelectMadd(N, &DAG)) |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 452 | return SDValue(N, 0); |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 453 | |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 454 | return SDValue(); |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 455 | } |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 456 | |
| 457 | static SDValue PerformSUBECombine(SDNode *N, SelectionDAG& DAG, |
| 458 | TargetLowering::DAGCombinerInfo &DCI, |
| 459 | const MipsSubtarget* Subtarget) { |
| 460 | if (DCI.isBeforeLegalize()) |
| 461 | return SDValue(); |
| 462 | |
Akira Hatanaka | e184fec | 2011-11-11 04:18:21 +0000 | [diff] [blame] | 463 | if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 && |
| 464 | SelectMsub(N, &DAG)) |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 465 | return SDValue(N, 0); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 466 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 467 | return SDValue(); |
| 468 | } |
| 469 | |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 470 | static SDValue PerformDivRemCombine(SDNode *N, SelectionDAG& DAG, |
| 471 | TargetLowering::DAGCombinerInfo &DCI, |
| 472 | const MipsSubtarget* Subtarget) { |
| 473 | if (DCI.isBeforeLegalizeOps()) |
| 474 | return SDValue(); |
| 475 | |
Akira Hatanaka | dda4a07 | 2011-10-03 21:06:13 +0000 | [diff] [blame] | 476 | EVT Ty = N->getValueType(0); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 477 | unsigned LO = (Ty == MVT::i32) ? Mips::LO : Mips::LO64; |
| 478 | unsigned HI = (Ty == MVT::i32) ? Mips::HI : Mips::HI64; |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 479 | unsigned opc = N->getOpcode() == ISD::SDIVREM ? MipsISD::DivRem : |
| 480 | MipsISD::DivRemU; |
| 481 | DebugLoc dl = N->getDebugLoc(); |
| 482 | |
| 483 | SDValue DivRem = DAG.getNode(opc, dl, MVT::Glue, |
| 484 | N->getOperand(0), N->getOperand(1)); |
| 485 | SDValue InChain = DAG.getEntryNode(); |
| 486 | SDValue InGlue = DivRem; |
| 487 | |
| 488 | // insert MFLO |
| 489 | if (N->hasAnyUseOfValue(0)) { |
Akira Hatanaka | dda4a07 | 2011-10-03 21:06:13 +0000 | [diff] [blame] | 490 | SDValue CopyFromLo = DAG.getCopyFromReg(InChain, dl, LO, Ty, |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 491 | InGlue); |
| 492 | DAG.ReplaceAllUsesOfValueWith(SDValue(N, 0), CopyFromLo); |
| 493 | InChain = CopyFromLo.getValue(1); |
| 494 | InGlue = CopyFromLo.getValue(2); |
| 495 | } |
| 496 | |
| 497 | // insert MFHI |
| 498 | if (N->hasAnyUseOfValue(1)) { |
| 499 | SDValue CopyFromHi = DAG.getCopyFromReg(InChain, dl, |
Akira Hatanaka | dda4a07 | 2011-10-03 21:06:13 +0000 | [diff] [blame] | 500 | HI, Ty, InGlue); |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 501 | DAG.ReplaceAllUsesOfValueWith(SDValue(N, 1), CopyFromHi); |
| 502 | } |
| 503 | |
| 504 | return SDValue(); |
| 505 | } |
| 506 | |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 507 | static Mips::CondCode FPCondCCodeToFCC(ISD::CondCode CC) { |
| 508 | switch (CC) { |
| 509 | default: llvm_unreachable("Unknown fp condition code!"); |
| 510 | case ISD::SETEQ: |
| 511 | case ISD::SETOEQ: return Mips::FCOND_OEQ; |
| 512 | case ISD::SETUNE: return Mips::FCOND_UNE; |
| 513 | case ISD::SETLT: |
| 514 | case ISD::SETOLT: return Mips::FCOND_OLT; |
| 515 | case ISD::SETGT: |
| 516 | case ISD::SETOGT: return Mips::FCOND_OGT; |
| 517 | case ISD::SETLE: |
| 518 | case ISD::SETOLE: return Mips::FCOND_OLE; |
| 519 | case ISD::SETGE: |
| 520 | case ISD::SETOGE: return Mips::FCOND_OGE; |
| 521 | case ISD::SETULT: return Mips::FCOND_ULT; |
| 522 | case ISD::SETULE: return Mips::FCOND_ULE; |
| 523 | case ISD::SETUGT: return Mips::FCOND_UGT; |
| 524 | case ISD::SETUGE: return Mips::FCOND_UGE; |
| 525 | case ISD::SETUO: return Mips::FCOND_UN; |
| 526 | case ISD::SETO: return Mips::FCOND_OR; |
| 527 | case ISD::SETNE: |
| 528 | case ISD::SETONE: return Mips::FCOND_ONE; |
| 529 | case ISD::SETUEQ: return Mips::FCOND_UEQ; |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | |
| 534 | // Returns true if condition code has to be inverted. |
| 535 | static bool InvertFPCondCode(Mips::CondCode CC) { |
| 536 | if (CC >= Mips::FCOND_F && CC <= Mips::FCOND_NGT) |
| 537 | return false; |
| 538 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 539 | assert((CC >= Mips::FCOND_T && CC <= Mips::FCOND_GT) && |
| 540 | "Illegal Condition Code"); |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 541 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 542 | return true; |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 543 | } |
| 544 | |
| 545 | // Creates and returns an FPCmp node from a setcc node. |
| 546 | // Returns Op if setcc is not a floating point comparison. |
| 547 | static SDValue CreateFPCmp(SelectionDAG& DAG, const SDValue& Op) { |
| 548 | // must be a SETCC node |
| 549 | if (Op.getOpcode() != ISD::SETCC) |
| 550 | return Op; |
| 551 | |
| 552 | SDValue LHS = Op.getOperand(0); |
| 553 | |
| 554 | if (!LHS.getValueType().isFloatingPoint()) |
| 555 | return Op; |
| 556 | |
| 557 | SDValue RHS = Op.getOperand(1); |
| 558 | DebugLoc dl = Op.getDebugLoc(); |
| 559 | |
Akira Hatanaka | 0bf3dfb | 2011-04-15 21:00:26 +0000 | [diff] [blame] | 560 | // Assume the 3rd operand is a CondCodeSDNode. Add code to check the type of |
| 561 | // node if necessary. |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 562 | ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(2))->get(); |
| 563 | |
| 564 | return DAG.getNode(MipsISD::FPCmp, dl, MVT::Glue, LHS, RHS, |
| 565 | DAG.getConstant(FPCondCCodeToFCC(CC), MVT::i32)); |
| 566 | } |
| 567 | |
| 568 | // Creates and returns a CMovFPT/F node. |
| 569 | static SDValue CreateCMovFP(SelectionDAG& DAG, SDValue Cond, SDValue True, |
| 570 | SDValue False, DebugLoc DL) { |
| 571 | bool invert = InvertFPCondCode((Mips::CondCode) |
| 572 | cast<ConstantSDNode>(Cond.getOperand(2)) |
| 573 | ->getSExtValue()); |
| 574 | |
| 575 | return DAG.getNode((invert ? MipsISD::CMovFP_F : MipsISD::CMovFP_T), DL, |
| 576 | True.getValueType(), True, False, Cond); |
| 577 | } |
| 578 | |
Akira Hatanaka | e2bdf7f | 2012-03-08 02:14:24 +0000 | [diff] [blame] | 579 | static SDValue PerformSELECTCombine(SDNode *N, SelectionDAG& DAG, |
| 580 | TargetLowering::DAGCombinerInfo &DCI, |
| 581 | const MipsSubtarget* Subtarget) { |
| 582 | if (DCI.isBeforeLegalizeOps()) |
| 583 | return SDValue(); |
| 584 | |
| 585 | SDValue SetCC = N->getOperand(0); |
| 586 | |
| 587 | if ((SetCC.getOpcode() != ISD::SETCC) || |
| 588 | !SetCC.getOperand(0).getValueType().isInteger()) |
| 589 | return SDValue(); |
| 590 | |
| 591 | SDValue False = N->getOperand(2); |
| 592 | EVT FalseTy = False.getValueType(); |
| 593 | |
| 594 | if (!FalseTy.isInteger()) |
| 595 | return SDValue(); |
| 596 | |
| 597 | ConstantSDNode *CN = dyn_cast<ConstantSDNode>(False); |
| 598 | |
| 599 | if (!CN || CN->getZExtValue()) |
| 600 | return SDValue(); |
| 601 | |
| 602 | const DebugLoc DL = N->getDebugLoc(); |
| 603 | ISD::CondCode CC = cast<CondCodeSDNode>(SetCC.getOperand(2))->get(); |
| 604 | SDValue True = N->getOperand(1); |
| 605 | |
| 606 | SetCC = DAG.getSetCC(DL, SetCC.getValueType(), SetCC.getOperand(0), |
| 607 | SetCC.getOperand(1), ISD::getSetCCInverse(CC, true)); |
| 608 | |
| 609 | return DAG.getNode(ISD::SELECT, DL, FalseTy, SetCC, False, True); |
| 610 | } |
| 611 | |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 612 | static SDValue PerformANDCombine(SDNode *N, SelectionDAG& DAG, |
| 613 | TargetLowering::DAGCombinerInfo &DCI, |
| 614 | const MipsSubtarget* Subtarget) { |
| 615 | // Pattern match EXT. |
| 616 | // $dst = and ((sra or srl) $src , pos), (2**size - 1) |
| 617 | // => ext $dst, $src, size, pos |
Akira Hatanaka | 5663344 | 2011-09-20 23:53:09 +0000 | [diff] [blame] | 618 | if (DCI.isBeforeLegalizeOps() || !Subtarget->hasMips32r2()) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 619 | return SDValue(); |
| 620 | |
| 621 | SDValue ShiftRight = N->getOperand(0), Mask = N->getOperand(1); |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 622 | unsigned ShiftRightOpc = ShiftRight.getOpcode(); |
| 623 | |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 624 | // Op's first operand must be a shift right. |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 625 | if (ShiftRightOpc != ISD::SRA && ShiftRightOpc != ISD::SRL) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 626 | return SDValue(); |
| 627 | |
| 628 | // The second operand of the shift must be an immediate. |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 629 | ConstantSDNode *CN; |
| 630 | if (!(CN = dyn_cast<ConstantSDNode>(ShiftRight.getOperand(1)))) |
| 631 | return SDValue(); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 632 | |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 633 | uint64_t Pos = CN->getZExtValue(); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 634 | uint64_t SMPos, SMSize; |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 635 | |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 636 | // Op's second operand must be a shifted mask. |
| 637 | if (!(CN = dyn_cast<ConstantSDNode>(Mask)) || |
Akira Hatanaka | 854a7db | 2011-08-19 22:59:00 +0000 | [diff] [blame] | 638 | !IsShiftedMask(CN->getZExtValue(), SMPos, SMSize)) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 639 | return SDValue(); |
| 640 | |
| 641 | // Return if the shifted mask does not start at bit 0 or the sum of its size |
| 642 | // and Pos exceeds the word's size. |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 643 | EVT ValTy = N->getValueType(0); |
| 644 | if (SMPos != 0 || Pos + SMSize > ValTy.getSizeInBits()) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 645 | return SDValue(); |
| 646 | |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 647 | return DAG.getNode(MipsISD::Ext, N->getDebugLoc(), ValTy, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 648 | ShiftRight.getOperand(0), DAG.getConstant(Pos, MVT::i32), |
Akira Hatanaka | 667645f | 2011-08-17 22:59:46 +0000 | [diff] [blame] | 649 | DAG.getConstant(SMSize, MVT::i32)); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 650 | } |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 651 | |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 652 | static SDValue PerformORCombine(SDNode *N, SelectionDAG& DAG, |
| 653 | TargetLowering::DAGCombinerInfo &DCI, |
| 654 | const MipsSubtarget* Subtarget) { |
| 655 | // Pattern match INS. |
| 656 | // $dst = or (and $src1 , mask0), (and (shl $src, pos), mask1), |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 657 | // where mask1 = (2**size - 1) << pos, mask0 = ~mask1 |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 658 | // => ins $dst, $src, size, pos, $src1 |
Akira Hatanaka | 5663344 | 2011-09-20 23:53:09 +0000 | [diff] [blame] | 659 | if (DCI.isBeforeLegalizeOps() || !Subtarget->hasMips32r2()) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 660 | return SDValue(); |
| 661 | |
| 662 | SDValue And0 = N->getOperand(0), And1 = N->getOperand(1); |
| 663 | uint64_t SMPos0, SMSize0, SMPos1, SMSize1; |
| 664 | ConstantSDNode *CN; |
| 665 | |
| 666 | // See if Op's first operand matches (and $src1 , mask0). |
| 667 | if (And0.getOpcode() != ISD::AND) |
| 668 | return SDValue(); |
| 669 | |
| 670 | if (!(CN = dyn_cast<ConstantSDNode>(And0.getOperand(1))) || |
Akira Hatanaka | 854a7db | 2011-08-19 22:59:00 +0000 | [diff] [blame] | 671 | !IsShiftedMask(~CN->getSExtValue(), SMPos0, SMSize0)) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 672 | return SDValue(); |
| 673 | |
| 674 | // See if Op's second operand matches (and (shl $src, pos), mask1). |
| 675 | if (And1.getOpcode() != ISD::AND) |
| 676 | return SDValue(); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 677 | |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 678 | if (!(CN = dyn_cast<ConstantSDNode>(And1.getOperand(1))) || |
Akira Hatanaka | 854a7db | 2011-08-19 22:59:00 +0000 | [diff] [blame] | 679 | !IsShiftedMask(CN->getZExtValue(), SMPos1, SMSize1)) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 680 | return SDValue(); |
| 681 | |
| 682 | // The shift masks must have the same position and size. |
| 683 | if (SMPos0 != SMPos1 || SMSize0 != SMSize1) |
| 684 | return SDValue(); |
| 685 | |
| 686 | SDValue Shl = And1.getOperand(0); |
| 687 | if (Shl.getOpcode() != ISD::SHL) |
| 688 | return SDValue(); |
| 689 | |
| 690 | if (!(CN = dyn_cast<ConstantSDNode>(Shl.getOperand(1)))) |
| 691 | return SDValue(); |
| 692 | |
| 693 | unsigned Shamt = CN->getZExtValue(); |
| 694 | |
| 695 | // 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] | 696 | // same. |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 697 | EVT ValTy = N->getValueType(0); |
| 698 | if ((Shamt != SMPos0) || (SMPos0 + SMSize0 > ValTy.getSizeInBits())) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 699 | return SDValue(); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 700 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 701 | return DAG.getNode(MipsISD::Ins, N->getDebugLoc(), ValTy, Shl.getOperand(0), |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 702 | DAG.getConstant(SMPos0, MVT::i32), |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 703 | DAG.getConstant(SMSize0, MVT::i32), And0.getOperand(0)); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 704 | } |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 705 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 706 | SDValue MipsTargetLowering::PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 707 | const { |
| 708 | SelectionDAG &DAG = DCI.DAG; |
| 709 | unsigned opc = N->getOpcode(); |
| 710 | |
| 711 | switch (opc) { |
| 712 | default: break; |
| 713 | case ISD::ADDE: |
| 714 | return PerformADDECombine(N, DAG, DCI, Subtarget); |
| 715 | case ISD::SUBE: |
| 716 | return PerformSUBECombine(N, DAG, DCI, Subtarget); |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 717 | case ISD::SDIVREM: |
| 718 | case ISD::UDIVREM: |
| 719 | return PerformDivRemCombine(N, DAG, DCI, Subtarget); |
Akira Hatanaka | e2bdf7f | 2012-03-08 02:14:24 +0000 | [diff] [blame] | 720 | case ISD::SELECT: |
| 721 | return PerformSELECTCombine(N, DAG, DCI, Subtarget); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 722 | case ISD::AND: |
| 723 | return PerformANDCombine(N, DAG, DCI, Subtarget); |
| 724 | case ISD::OR: |
| 725 | return PerformORCombine(N, DAG, DCI, Subtarget); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 726 | } |
| 727 | |
| 728 | return SDValue(); |
| 729 | } |
| 730 | |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 731 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 732 | LowerOperation(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 733 | { |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 734 | switch (Op.getOpcode()) |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 735 | { |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 736 | case ISD::BRCOND: return LowerBRCOND(Op, DAG); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 737 | case ISD::ConstantPool: return LowerConstantPool(Op, DAG); |
| 738 | case ISD::DYNAMIC_STACKALLOC: return LowerDYNAMIC_STACKALLOC(Op, DAG); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 739 | case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG); |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 740 | case ISD::BlockAddress: return LowerBlockAddress(Op, DAG); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 741 | case ISD::GlobalTLSAddress: return LowerGlobalTLSAddress(Op, DAG); |
| 742 | case ISD::JumpTable: return LowerJumpTable(Op, DAG); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 743 | case ISD::SELECT: return LowerSELECT(Op, DAG); |
Akira Hatanaka | 0a40c23 | 2012-03-09 23:46:03 +0000 | [diff] [blame] | 744 | case ISD::SETCC: return LowerSETCC(Op, DAG); |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 745 | case ISD::VASTART: return LowerVASTART(Op, DAG); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 746 | case ISD::FCOPYSIGN: return LowerFCOPYSIGN(Op, DAG); |
Akira Hatanaka | c12a6e6 | 2012-04-11 22:49:04 +0000 | [diff] [blame] | 747 | case ISD::FABS: return LowerFABS(Op, DAG); |
Akira Hatanaka | 2e59147 | 2011-06-02 00:24:44 +0000 | [diff] [blame] | 748 | case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG); |
Akira Hatanaka | db54826 | 2011-07-19 23:30:50 +0000 | [diff] [blame] | 749 | case ISD::MEMBARRIER: return LowerMEMBARRIER(Op, DAG); |
Eli Friedman | 1464846 | 2011-07-27 22:21:52 +0000 | [diff] [blame] | 750 | case ISD::ATOMIC_FENCE: return LowerATOMIC_FENCE(Op, DAG); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 751 | } |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 752 | return SDValue(); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 753 | } |
| 754 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 755 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 756 | // Lower helper functions |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 757 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 758 | |
| 759 | // AddLiveIn - This helper function adds the specified physical register to the |
| 760 | // MachineFunction as a live in value. It also creates a corresponding |
| 761 | // virtual register for it. |
| 762 | static unsigned |
Craig Topper | 44d2382 | 2012-02-22 05:59:10 +0000 | [diff] [blame] | 763 | AddLiveIn(MachineFunction &MF, unsigned PReg, const TargetRegisterClass *RC) |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 764 | { |
| 765 | assert(RC->contains(PReg) && "Not the correct regclass!"); |
Chris Lattner | 84bc542 | 2007-12-31 04:13:23 +0000 | [diff] [blame] | 766 | unsigned VReg = MF.getRegInfo().createVirtualRegister(RC); |
| 767 | MF.getRegInfo().addLiveIn(PReg, VReg); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 768 | return VReg; |
| 769 | } |
| 770 | |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 771 | // Get fp branch code (not opcode) from condition code. |
| 772 | static Mips::FPBranchCode GetFPBranchCodeFromCond(Mips::CondCode CC) { |
| 773 | if (CC >= Mips::FCOND_F && CC <= Mips::FCOND_NGT) |
| 774 | return Mips::BRANCH_T; |
| 775 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 776 | assert((CC >= Mips::FCOND_T && CC <= Mips::FCOND_GT) && |
| 777 | "Invalid CondCode."); |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 778 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 779 | return Mips::BRANCH_F; |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 780 | } |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 781 | |
Akira Hatanaka | 8ae330a | 2011-10-17 18:53:29 +0000 | [diff] [blame] | 782 | /* |
Akira Hatanaka | 14487d4 | 2011-06-07 19:28:39 +0000 | [diff] [blame] | 783 | static MachineBasicBlock* ExpandCondMov(MachineInstr *MI, MachineBasicBlock *BB, |
| 784 | DebugLoc dl, |
| 785 | const MipsSubtarget* Subtarget, |
| 786 | const TargetInstrInfo *TII, |
| 787 | bool isFPCmp, unsigned Opc) { |
| 788 | // There is no need to expand CMov instructions if target has |
| 789 | // conditional moves. |
| 790 | if (Subtarget->hasCondMov()) |
| 791 | return BB; |
| 792 | |
| 793 | // To "insert" a SELECT_CC instruction, we actually have to insert the |
| 794 | // diamond control-flow pattern. The incoming instruction knows the |
| 795 | // destination vreg to set, the condition code register to branch on, the |
| 796 | // true/false values to select between, and a branch opcode to use. |
| 797 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 798 | MachineFunction::iterator It = BB; |
| 799 | ++It; |
| 800 | |
| 801 | // thisMBB: |
| 802 | // ... |
| 803 | // TrueVal = ... |
| 804 | // setcc r1, r2, r3 |
| 805 | // bNE r1, r0, copy1MBB |
| 806 | // fallthrough --> copy0MBB |
| 807 | MachineBasicBlock *thisMBB = BB; |
| 808 | MachineFunction *F = BB->getParent(); |
| 809 | MachineBasicBlock *copy0MBB = F->CreateMachineBasicBlock(LLVM_BB); |
| 810 | MachineBasicBlock *sinkMBB = F->CreateMachineBasicBlock(LLVM_BB); |
| 811 | F->insert(It, copy0MBB); |
| 812 | F->insert(It, sinkMBB); |
| 813 | |
| 814 | // Transfer the remainder of BB and its successor edges to sinkMBB. |
| 815 | sinkMBB->splice(sinkMBB->begin(), BB, |
| 816 | llvm::next(MachineBasicBlock::iterator(MI)), |
| 817 | BB->end()); |
| 818 | sinkMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 819 | |
| 820 | // Next, add the true and fallthrough blocks as its successors. |
| 821 | BB->addSuccessor(copy0MBB); |
| 822 | BB->addSuccessor(sinkMBB); |
| 823 | |
| 824 | // Emit the right instruction according to the type of the operands compared |
| 825 | if (isFPCmp) |
| 826 | BuildMI(BB, dl, TII->get(Opc)).addMBB(sinkMBB); |
| 827 | else |
| 828 | BuildMI(BB, dl, TII->get(Opc)).addReg(MI->getOperand(2).getReg()) |
| 829 | .addReg(Mips::ZERO).addMBB(sinkMBB); |
| 830 | |
| 831 | // copy0MBB: |
| 832 | // %FalseValue = ... |
| 833 | // # fallthrough to sinkMBB |
| 834 | BB = copy0MBB; |
| 835 | |
| 836 | // Update machine-CFG edges |
| 837 | BB->addSuccessor(sinkMBB); |
| 838 | |
| 839 | // sinkMBB: |
| 840 | // %Result = phi [ %TrueValue, thisMBB ], [ %FalseValue, copy0MBB ] |
| 841 | // ... |
| 842 | BB = sinkMBB; |
| 843 | |
| 844 | if (isFPCmp) |
| 845 | BuildMI(*BB, BB->begin(), dl, |
| 846 | TII->get(Mips::PHI), MI->getOperand(0).getReg()) |
| 847 | .addReg(MI->getOperand(2).getReg()).addMBB(thisMBB) |
| 848 | .addReg(MI->getOperand(1).getReg()).addMBB(copy0MBB); |
| 849 | else |
| 850 | BuildMI(*BB, BB->begin(), dl, |
| 851 | TII->get(Mips::PHI), MI->getOperand(0).getReg()) |
| 852 | .addReg(MI->getOperand(3).getReg()).addMBB(thisMBB) |
| 853 | .addReg(MI->getOperand(1).getReg()).addMBB(copy0MBB); |
| 854 | |
| 855 | MI->eraseFromParent(); // The pseudo instruction is gone now. |
| 856 | return BB; |
| 857 | } |
Akira Hatanaka | 8ae330a | 2011-10-17 18:53:29 +0000 | [diff] [blame] | 858 | */ |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 859 | MachineBasicBlock * |
| 860 | MipsTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI, |
Dan Gohman | af1d8ca | 2010-05-01 00:01:06 +0000 | [diff] [blame] | 861 | MachineBasicBlock *BB) const { |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 862 | switch (MI->getOpcode()) { |
Craig Topper | bc21981 | 2012-02-07 02:50:20 +0000 | [diff] [blame] | 863 | default: llvm_unreachable("Unexpected instr type to insert"); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 864 | case Mips::ATOMIC_LOAD_ADD_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 865 | case Mips::ATOMIC_LOAD_ADD_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 866 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::ADDu); |
| 867 | case Mips::ATOMIC_LOAD_ADD_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 868 | case Mips::ATOMIC_LOAD_ADD_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 869 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::ADDu); |
| 870 | case Mips::ATOMIC_LOAD_ADD_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 871 | case Mips::ATOMIC_LOAD_ADD_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 872 | return EmitAtomicBinary(MI, BB, 4, Mips::ADDu); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 873 | case Mips::ATOMIC_LOAD_ADD_I64: |
| 874 | case Mips::ATOMIC_LOAD_ADD_I64_P8: |
| 875 | return EmitAtomicBinary(MI, BB, 8, Mips::DADDu); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 876 | |
| 877 | case Mips::ATOMIC_LOAD_AND_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 878 | case Mips::ATOMIC_LOAD_AND_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 879 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::AND); |
| 880 | case Mips::ATOMIC_LOAD_AND_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 881 | case Mips::ATOMIC_LOAD_AND_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 882 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::AND); |
| 883 | case Mips::ATOMIC_LOAD_AND_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 884 | case Mips::ATOMIC_LOAD_AND_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 885 | return EmitAtomicBinary(MI, BB, 4, Mips::AND); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 886 | case Mips::ATOMIC_LOAD_AND_I64: |
| 887 | case Mips::ATOMIC_LOAD_AND_I64_P8: |
Akira Hatanaka | 7386612 | 2011-11-12 02:38:12 +0000 | [diff] [blame] | 888 | return EmitAtomicBinary(MI, BB, 8, Mips::AND64); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 889 | |
| 890 | case Mips::ATOMIC_LOAD_OR_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 891 | case Mips::ATOMIC_LOAD_OR_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 892 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::OR); |
| 893 | case Mips::ATOMIC_LOAD_OR_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 894 | case Mips::ATOMIC_LOAD_OR_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 895 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::OR); |
| 896 | case Mips::ATOMIC_LOAD_OR_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 897 | case Mips::ATOMIC_LOAD_OR_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 898 | return EmitAtomicBinary(MI, BB, 4, Mips::OR); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 899 | case Mips::ATOMIC_LOAD_OR_I64: |
| 900 | case Mips::ATOMIC_LOAD_OR_I64_P8: |
| 901 | return EmitAtomicBinary(MI, BB, 8, Mips::OR64); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 902 | |
| 903 | case Mips::ATOMIC_LOAD_XOR_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 904 | case Mips::ATOMIC_LOAD_XOR_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 905 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::XOR); |
| 906 | case Mips::ATOMIC_LOAD_XOR_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 907 | case Mips::ATOMIC_LOAD_XOR_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 908 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::XOR); |
| 909 | case Mips::ATOMIC_LOAD_XOR_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 910 | case Mips::ATOMIC_LOAD_XOR_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 911 | return EmitAtomicBinary(MI, BB, 4, Mips::XOR); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 912 | case Mips::ATOMIC_LOAD_XOR_I64: |
| 913 | case Mips::ATOMIC_LOAD_XOR_I64_P8: |
| 914 | return EmitAtomicBinary(MI, BB, 8, Mips::XOR64); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 915 | |
| 916 | case Mips::ATOMIC_LOAD_NAND_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 917 | case Mips::ATOMIC_LOAD_NAND_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 918 | return EmitAtomicBinaryPartword(MI, BB, 1, 0, true); |
| 919 | case Mips::ATOMIC_LOAD_NAND_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 920 | case Mips::ATOMIC_LOAD_NAND_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 921 | return EmitAtomicBinaryPartword(MI, BB, 2, 0, true); |
| 922 | case Mips::ATOMIC_LOAD_NAND_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 923 | case Mips::ATOMIC_LOAD_NAND_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 924 | return EmitAtomicBinary(MI, BB, 4, 0, true); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 925 | case Mips::ATOMIC_LOAD_NAND_I64: |
| 926 | case Mips::ATOMIC_LOAD_NAND_I64_P8: |
| 927 | return EmitAtomicBinary(MI, BB, 8, 0, true); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 928 | |
| 929 | case Mips::ATOMIC_LOAD_SUB_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 930 | case Mips::ATOMIC_LOAD_SUB_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 931 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::SUBu); |
| 932 | case Mips::ATOMIC_LOAD_SUB_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 933 | case Mips::ATOMIC_LOAD_SUB_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 934 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::SUBu); |
| 935 | case Mips::ATOMIC_LOAD_SUB_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 936 | case Mips::ATOMIC_LOAD_SUB_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 937 | return EmitAtomicBinary(MI, BB, 4, Mips::SUBu); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 938 | case Mips::ATOMIC_LOAD_SUB_I64: |
| 939 | case Mips::ATOMIC_LOAD_SUB_I64_P8: |
| 940 | return EmitAtomicBinary(MI, BB, 8, Mips::DSUBu); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 941 | |
| 942 | case Mips::ATOMIC_SWAP_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 943 | case Mips::ATOMIC_SWAP_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 944 | return EmitAtomicBinaryPartword(MI, BB, 1, 0); |
| 945 | case Mips::ATOMIC_SWAP_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 946 | case Mips::ATOMIC_SWAP_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 947 | return EmitAtomicBinaryPartword(MI, BB, 2, 0); |
| 948 | case Mips::ATOMIC_SWAP_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 949 | case Mips::ATOMIC_SWAP_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 950 | return EmitAtomicBinary(MI, BB, 4, 0); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 951 | case Mips::ATOMIC_SWAP_I64: |
| 952 | case Mips::ATOMIC_SWAP_I64_P8: |
| 953 | return EmitAtomicBinary(MI, BB, 8, 0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 954 | |
| 955 | case Mips::ATOMIC_CMP_SWAP_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 956 | case Mips::ATOMIC_CMP_SWAP_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 957 | return EmitAtomicCmpSwapPartword(MI, BB, 1); |
| 958 | case Mips::ATOMIC_CMP_SWAP_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 959 | case Mips::ATOMIC_CMP_SWAP_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 960 | return EmitAtomicCmpSwapPartword(MI, BB, 2); |
| 961 | case Mips::ATOMIC_CMP_SWAP_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 962 | case Mips::ATOMIC_CMP_SWAP_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 963 | return EmitAtomicCmpSwap(MI, BB, 4); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 964 | case Mips::ATOMIC_CMP_SWAP_I64: |
| 965 | case Mips::ATOMIC_CMP_SWAP_I64_P8: |
| 966 | return EmitAtomicCmpSwap(MI, BB, 8); |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 967 | } |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 968 | } |
| 969 | |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 970 | // This function also handles Mips::ATOMIC_SWAP_I32 (when BinOpcode == 0), and |
| 971 | // Mips::ATOMIC_LOAD_NAND_I32 (when Nand == true) |
| 972 | MachineBasicBlock * |
| 973 | MipsTargetLowering::EmitAtomicBinary(MachineInstr *MI, MachineBasicBlock *BB, |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 974 | unsigned Size, unsigned BinOpcode, |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 975 | bool Nand) const { |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 976 | assert((Size == 4 || Size == 8) && "Unsupported size for EmitAtomicBinary."); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 977 | |
| 978 | MachineFunction *MF = BB->getParent(); |
| 979 | MachineRegisterInfo &RegInfo = MF->getRegInfo(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 980 | const TargetRegisterClass *RC = getRegClassFor(MVT::getIntegerVT(Size * 8)); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 981 | const TargetInstrInfo *TII = getTargetMachine().getInstrInfo(); |
| 982 | DebugLoc dl = MI->getDebugLoc(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 983 | unsigned LL, SC, AND, NOR, ZERO, BEQ; |
| 984 | |
| 985 | if (Size == 4) { |
| 986 | LL = IsN64 ? Mips::LL_P8 : Mips::LL; |
| 987 | SC = IsN64 ? Mips::SC_P8 : Mips::SC; |
| 988 | AND = Mips::AND; |
| 989 | NOR = Mips::NOR; |
| 990 | ZERO = Mips::ZERO; |
| 991 | BEQ = Mips::BEQ; |
| 992 | } |
| 993 | else { |
| 994 | LL = IsN64 ? Mips::LLD_P8 : Mips::LLD; |
| 995 | SC = IsN64 ? Mips::SCD_P8 : Mips::SCD; |
| 996 | AND = Mips::AND64; |
| 997 | NOR = Mips::NOR64; |
| 998 | ZERO = Mips::ZERO_64; |
| 999 | BEQ = Mips::BEQ64; |
| 1000 | } |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1001 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1002 | unsigned OldVal = MI->getOperand(0).getReg(); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1003 | unsigned Ptr = MI->getOperand(1).getReg(); |
| 1004 | unsigned Incr = MI->getOperand(2).getReg(); |
| 1005 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1006 | unsigned StoreVal = RegInfo.createVirtualRegister(RC); |
| 1007 | unsigned AndRes = RegInfo.createVirtualRegister(RC); |
| 1008 | unsigned Success = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1009 | |
| 1010 | // insert new blocks after the current block |
| 1011 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 1012 | MachineBasicBlock *loopMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1013 | MachineBasicBlock *exitMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1014 | MachineFunction::iterator It = BB; |
| 1015 | ++It; |
| 1016 | MF->insert(It, loopMBB); |
| 1017 | MF->insert(It, exitMBB); |
| 1018 | |
| 1019 | // Transfer the remainder of BB and its successor edges to exitMBB. |
| 1020 | exitMBB->splice(exitMBB->begin(), BB, |
| 1021 | llvm::next(MachineBasicBlock::iterator(MI)), |
| 1022 | BB->end()); |
| 1023 | exitMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 1024 | |
| 1025 | // thisMBB: |
| 1026 | // ... |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1027 | // fallthrough --> loopMBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1028 | BB->addSuccessor(loopMBB); |
Akira Hatanaka | 81b4411 | 2011-07-19 17:09:53 +0000 | [diff] [blame] | 1029 | loopMBB->addSuccessor(loopMBB); |
| 1030 | loopMBB->addSuccessor(exitMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1031 | |
| 1032 | // loopMBB: |
| 1033 | // ll oldval, 0(ptr) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1034 | // <binop> storeval, oldval, incr |
| 1035 | // sc success, storeval, 0(ptr) |
| 1036 | // beq success, $0, loopMBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1037 | BB = loopMBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1038 | BuildMI(BB, dl, TII->get(LL), OldVal).addReg(Ptr).addImm(0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1039 | if (Nand) { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1040 | // and andres, oldval, incr |
| 1041 | // nor storeval, $0, andres |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1042 | BuildMI(BB, dl, TII->get(AND), AndRes).addReg(OldVal).addReg(Incr); |
| 1043 | BuildMI(BB, dl, TII->get(NOR), StoreVal).addReg(ZERO).addReg(AndRes); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1044 | } else if (BinOpcode) { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1045 | // <binop> storeval, oldval, incr |
| 1046 | BuildMI(BB, dl, TII->get(BinOpcode), StoreVal).addReg(OldVal).addReg(Incr); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1047 | } else { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1048 | StoreVal = Incr; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1049 | } |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1050 | BuildMI(BB, dl, TII->get(SC), Success).addReg(StoreVal).addReg(Ptr).addImm(0); |
| 1051 | 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] | 1052 | |
| 1053 | MI->eraseFromParent(); // The instruction is gone now. |
| 1054 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1055 | return exitMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1056 | } |
| 1057 | |
| 1058 | MachineBasicBlock * |
| 1059 | MipsTargetLowering::EmitAtomicBinaryPartword(MachineInstr *MI, |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1060 | MachineBasicBlock *BB, |
| 1061 | unsigned Size, unsigned BinOpcode, |
| 1062 | bool Nand) const { |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1063 | assert((Size == 1 || Size == 2) && |
| 1064 | "Unsupported size for EmitAtomicBinaryPartial."); |
| 1065 | |
| 1066 | MachineFunction *MF = BB->getParent(); |
| 1067 | MachineRegisterInfo &RegInfo = MF->getRegInfo(); |
| 1068 | const TargetRegisterClass *RC = getRegClassFor(MVT::i32); |
| 1069 | const TargetInstrInfo *TII = getTargetMachine().getInstrInfo(); |
| 1070 | DebugLoc dl = MI->getDebugLoc(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1071 | unsigned LL = IsN64 ? Mips::LL_P8 : Mips::LL; |
| 1072 | unsigned SC = IsN64 ? Mips::SC_P8 : Mips::SC; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1073 | |
| 1074 | unsigned Dest = MI->getOperand(0).getReg(); |
| 1075 | unsigned Ptr = MI->getOperand(1).getReg(); |
| 1076 | unsigned Incr = MI->getOperand(2).getReg(); |
| 1077 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1078 | unsigned AlignedAddr = RegInfo.createVirtualRegister(RC); |
| 1079 | unsigned ShiftAmt = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1080 | unsigned Mask = RegInfo.createVirtualRegister(RC); |
| 1081 | unsigned Mask2 = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1082 | unsigned NewVal = RegInfo.createVirtualRegister(RC); |
| 1083 | unsigned OldVal = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1084 | unsigned Incr2 = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1085 | unsigned MaskLSB2 = RegInfo.createVirtualRegister(RC); |
| 1086 | unsigned PtrLSB2 = RegInfo.createVirtualRegister(RC); |
| 1087 | unsigned MaskUpper = RegInfo.createVirtualRegister(RC); |
| 1088 | unsigned AndRes = RegInfo.createVirtualRegister(RC); |
| 1089 | unsigned BinOpRes = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | bdd83fe | 2011-07-19 20:56:53 +0000 | [diff] [blame] | 1090 | unsigned MaskedOldVal0 = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1091 | unsigned StoreVal = RegInfo.createVirtualRegister(RC); |
| 1092 | unsigned MaskedOldVal1 = RegInfo.createVirtualRegister(RC); |
| 1093 | unsigned SrlRes = RegInfo.createVirtualRegister(RC); |
| 1094 | unsigned SllRes = RegInfo.createVirtualRegister(RC); |
| 1095 | unsigned Success = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1096 | |
| 1097 | // insert new blocks after the current block |
| 1098 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 1099 | MachineBasicBlock *loopMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1100 | MachineBasicBlock *sinkMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1101 | MachineBasicBlock *exitMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1102 | MachineFunction::iterator It = BB; |
| 1103 | ++It; |
| 1104 | MF->insert(It, loopMBB); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1105 | MF->insert(It, sinkMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1106 | MF->insert(It, exitMBB); |
| 1107 | |
| 1108 | // Transfer the remainder of BB and its successor edges to exitMBB. |
| 1109 | exitMBB->splice(exitMBB->begin(), BB, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1110 | llvm::next(MachineBasicBlock::iterator(MI)), BB->end()); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1111 | exitMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 1112 | |
Akira Hatanaka | 81b4411 | 2011-07-19 17:09:53 +0000 | [diff] [blame] | 1113 | BB->addSuccessor(loopMBB); |
| 1114 | loopMBB->addSuccessor(loopMBB); |
| 1115 | loopMBB->addSuccessor(sinkMBB); |
| 1116 | sinkMBB->addSuccessor(exitMBB); |
| 1117 | |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1118 | // thisMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1119 | // addiu masklsb2,$0,-4 # 0xfffffffc |
| 1120 | // and alignedaddr,ptr,masklsb2 |
| 1121 | // andi ptrlsb2,ptr,3 |
| 1122 | // sll shiftamt,ptrlsb2,3 |
| 1123 | // ori maskupper,$0,255 # 0xff |
| 1124 | // sll mask,maskupper,shiftamt |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1125 | // nor mask2,$0,mask |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1126 | // sll incr2,incr,shiftamt |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1127 | |
| 1128 | int64_t MaskImm = (Size == 1) ? 255 : 65535; |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1129 | BuildMI(BB, dl, TII->get(Mips::ADDiu), MaskLSB2) |
| 1130 | .addReg(Mips::ZERO).addImm(-4); |
| 1131 | BuildMI(BB, dl, TII->get(Mips::AND), AlignedAddr) |
| 1132 | .addReg(Ptr).addReg(MaskLSB2); |
| 1133 | BuildMI(BB, dl, TII->get(Mips::ANDi), PtrLSB2).addReg(Ptr).addImm(3); |
| 1134 | BuildMI(BB, dl, TII->get(Mips::SLL), ShiftAmt).addReg(PtrLSB2).addImm(3); |
| 1135 | BuildMI(BB, dl, TII->get(Mips::ORi), MaskUpper) |
| 1136 | .addReg(Mips::ZERO).addImm(MaskImm); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1137 | BuildMI(BB, dl, TII->get(Mips::SLLV), Mask) |
| 1138 | .addReg(ShiftAmt).addReg(MaskUpper); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1139 | 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] | 1140 | 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] | 1141 | |
Akira Hatanaka | 0d7d0b5 | 2011-07-18 18:52:12 +0000 | [diff] [blame] | 1142 | // atomic.load.binop |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1143 | // loopMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1144 | // ll oldval,0(alignedaddr) |
| 1145 | // binop binopres,oldval,incr2 |
| 1146 | // and newval,binopres,mask |
| 1147 | // and maskedoldval0,oldval,mask2 |
| 1148 | // or storeval,maskedoldval0,newval |
| 1149 | // sc success,storeval,0(alignedaddr) |
| 1150 | // beq success,$0,loopMBB |
| 1151 | |
Akira Hatanaka | 0d7d0b5 | 2011-07-18 18:52:12 +0000 | [diff] [blame] | 1152 | // atomic.swap |
| 1153 | // loopMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1154 | // ll oldval,0(alignedaddr) |
Akira Hatanaka | 70564a9 | 2011-07-19 18:14:26 +0000 | [diff] [blame] | 1155 | // and newval,incr2,mask |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1156 | // and maskedoldval0,oldval,mask2 |
| 1157 | // or storeval,maskedoldval0,newval |
| 1158 | // sc success,storeval,0(alignedaddr) |
| 1159 | // beq success,$0,loopMBB |
Akira Hatanaka | 0d7d0b5 | 2011-07-18 18:52:12 +0000 | [diff] [blame] | 1160 | |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1161 | BB = loopMBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1162 | BuildMI(BB, dl, TII->get(LL), OldVal).addReg(AlignedAddr).addImm(0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1163 | if (Nand) { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1164 | // and andres, oldval, incr2 |
| 1165 | // nor binopres, $0, andres |
| 1166 | // and newval, binopres, mask |
| 1167 | BuildMI(BB, dl, TII->get(Mips::AND), AndRes).addReg(OldVal).addReg(Incr2); |
| 1168 | BuildMI(BB, dl, TII->get(Mips::NOR), BinOpRes) |
| 1169 | .addReg(Mips::ZERO).addReg(AndRes); |
| 1170 | 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] | 1171 | } else if (BinOpcode) { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1172 | // <binop> binopres, oldval, incr2 |
| 1173 | // and newval, binopres, mask |
| 1174 | BuildMI(BB, dl, TII->get(BinOpcode), BinOpRes).addReg(OldVal).addReg(Incr2); |
| 1175 | BuildMI(BB, dl, TII->get(Mips::AND), NewVal).addReg(BinOpRes).addReg(Mask); |
Akira Hatanaka | 70564a9 | 2011-07-19 18:14:26 +0000 | [diff] [blame] | 1176 | } else {// atomic.swap |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1177 | // and newval, incr2, mask |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1178 | BuildMI(BB, dl, TII->get(Mips::AND), NewVal).addReg(Incr2).addReg(Mask); |
Akira Hatanaka | 70564a9 | 2011-07-19 18:14:26 +0000 | [diff] [blame] | 1179 | } |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 1180 | |
Akira Hatanaka | bdd83fe | 2011-07-19 20:56:53 +0000 | [diff] [blame] | 1181 | BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal0) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1182 | .addReg(OldVal).addReg(Mask2); |
| 1183 | BuildMI(BB, dl, TII->get(Mips::OR), StoreVal) |
Akira Hatanaka | bdd83fe | 2011-07-19 20:56:53 +0000 | [diff] [blame] | 1184 | .addReg(MaskedOldVal0).addReg(NewVal); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1185 | BuildMI(BB, dl, TII->get(SC), Success) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1186 | .addReg(StoreVal).addReg(AlignedAddr).addImm(0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1187 | BuildMI(BB, dl, TII->get(Mips::BEQ)) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1188 | .addReg(Success).addReg(Mips::ZERO).addMBB(loopMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1189 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1190 | // sinkMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1191 | // and maskedoldval1,oldval,mask |
| 1192 | // srl srlres,maskedoldval1,shiftamt |
| 1193 | // sll sllres,srlres,24 |
| 1194 | // sra dest,sllres,24 |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1195 | BB = sinkMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1196 | int64_t ShiftImm = (Size == 1) ? 24 : 16; |
Akira Hatanaka | a308c67 | 2011-07-19 03:14:58 +0000 | [diff] [blame] | 1197 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1198 | BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal1) |
| 1199 | .addReg(OldVal).addReg(Mask); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1200 | BuildMI(BB, dl, TII->get(Mips::SRLV), SrlRes) |
| 1201 | .addReg(ShiftAmt).addReg(MaskedOldVal1); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1202 | BuildMI(BB, dl, TII->get(Mips::SLL), SllRes) |
| 1203 | .addReg(SrlRes).addImm(ShiftImm); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1204 | BuildMI(BB, dl, TII->get(Mips::SRA), Dest) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1205 | .addReg(SllRes).addImm(ShiftImm); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1206 | |
| 1207 | MI->eraseFromParent(); // The instruction is gone now. |
| 1208 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1209 | return exitMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1210 | } |
| 1211 | |
| 1212 | MachineBasicBlock * |
| 1213 | MipsTargetLowering::EmitAtomicCmpSwap(MachineInstr *MI, |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1214 | MachineBasicBlock *BB, |
| 1215 | unsigned Size) const { |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1216 | assert((Size == 4 || Size == 8) && "Unsupported size for EmitAtomicCmpSwap."); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1217 | |
| 1218 | MachineFunction *MF = BB->getParent(); |
| 1219 | MachineRegisterInfo &RegInfo = MF->getRegInfo(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1220 | const TargetRegisterClass *RC = getRegClassFor(MVT::getIntegerVT(Size * 8)); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1221 | const TargetInstrInfo *TII = getTargetMachine().getInstrInfo(); |
| 1222 | DebugLoc dl = MI->getDebugLoc(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1223 | unsigned LL, SC, ZERO, BNE, BEQ; |
| 1224 | |
| 1225 | if (Size == 4) { |
| 1226 | LL = IsN64 ? Mips::LL_P8 : Mips::LL; |
| 1227 | SC = IsN64 ? Mips::SC_P8 : Mips::SC; |
| 1228 | ZERO = Mips::ZERO; |
| 1229 | BNE = Mips::BNE; |
| 1230 | BEQ = Mips::BEQ; |
| 1231 | } |
| 1232 | else { |
| 1233 | LL = IsN64 ? Mips::LLD_P8 : Mips::LLD; |
| 1234 | SC = IsN64 ? Mips::SCD_P8 : Mips::SCD; |
| 1235 | ZERO = Mips::ZERO_64; |
| 1236 | BNE = Mips::BNE64; |
| 1237 | BEQ = Mips::BEQ64; |
| 1238 | } |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1239 | |
| 1240 | unsigned Dest = MI->getOperand(0).getReg(); |
| 1241 | unsigned Ptr = MI->getOperand(1).getReg(); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1242 | unsigned OldVal = MI->getOperand(2).getReg(); |
| 1243 | unsigned NewVal = MI->getOperand(3).getReg(); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1244 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1245 | unsigned Success = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1246 | |
| 1247 | // insert new blocks after the current block |
| 1248 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 1249 | MachineBasicBlock *loop1MBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1250 | MachineBasicBlock *loop2MBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1251 | MachineBasicBlock *exitMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1252 | MachineFunction::iterator It = BB; |
| 1253 | ++It; |
| 1254 | MF->insert(It, loop1MBB); |
| 1255 | MF->insert(It, loop2MBB); |
| 1256 | MF->insert(It, exitMBB); |
| 1257 | |
| 1258 | // Transfer the remainder of BB and its successor edges to exitMBB. |
| 1259 | exitMBB->splice(exitMBB->begin(), BB, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1260 | llvm::next(MachineBasicBlock::iterator(MI)), BB->end()); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1261 | exitMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 1262 | |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1263 | // thisMBB: |
| 1264 | // ... |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1265 | // fallthrough --> loop1MBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1266 | BB->addSuccessor(loop1MBB); |
Akira Hatanaka | 81b4411 | 2011-07-19 17:09:53 +0000 | [diff] [blame] | 1267 | loop1MBB->addSuccessor(exitMBB); |
| 1268 | loop1MBB->addSuccessor(loop2MBB); |
| 1269 | loop2MBB->addSuccessor(loop1MBB); |
| 1270 | loop2MBB->addSuccessor(exitMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1271 | |
| 1272 | // loop1MBB: |
| 1273 | // ll dest, 0(ptr) |
| 1274 | // bne dest, oldval, exitMBB |
| 1275 | BB = loop1MBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1276 | BuildMI(BB, dl, TII->get(LL), Dest).addReg(Ptr).addImm(0); |
| 1277 | BuildMI(BB, dl, TII->get(BNE)) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1278 | .addReg(Dest).addReg(OldVal).addMBB(exitMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1279 | |
| 1280 | // loop2MBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1281 | // sc success, newval, 0(ptr) |
| 1282 | // beq success, $0, loop1MBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1283 | BB = loop2MBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1284 | BuildMI(BB, dl, TII->get(SC), Success) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1285 | .addReg(NewVal).addReg(Ptr).addImm(0); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1286 | BuildMI(BB, dl, TII->get(BEQ)) |
| 1287 | .addReg(Success).addReg(ZERO).addMBB(loop1MBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1288 | |
| 1289 | MI->eraseFromParent(); // The instruction is gone now. |
| 1290 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1291 | return exitMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1292 | } |
| 1293 | |
| 1294 | MachineBasicBlock * |
| 1295 | MipsTargetLowering::EmitAtomicCmpSwapPartword(MachineInstr *MI, |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1296 | MachineBasicBlock *BB, |
| 1297 | unsigned Size) const { |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1298 | assert((Size == 1 || Size == 2) && |
| 1299 | "Unsupported size for EmitAtomicCmpSwapPartial."); |
| 1300 | |
| 1301 | MachineFunction *MF = BB->getParent(); |
| 1302 | MachineRegisterInfo &RegInfo = MF->getRegInfo(); |
| 1303 | const TargetRegisterClass *RC = getRegClassFor(MVT::i32); |
| 1304 | const TargetInstrInfo *TII = getTargetMachine().getInstrInfo(); |
| 1305 | DebugLoc dl = MI->getDebugLoc(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1306 | unsigned LL = IsN64 ? Mips::LL_P8 : Mips::LL; |
| 1307 | unsigned SC = IsN64 ? Mips::SC_P8 : Mips::SC; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1308 | |
| 1309 | unsigned Dest = MI->getOperand(0).getReg(); |
| 1310 | unsigned Ptr = MI->getOperand(1).getReg(); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1311 | unsigned CmpVal = MI->getOperand(2).getReg(); |
| 1312 | unsigned NewVal = MI->getOperand(3).getReg(); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1313 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1314 | unsigned AlignedAddr = RegInfo.createVirtualRegister(RC); |
| 1315 | unsigned ShiftAmt = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1316 | unsigned Mask = RegInfo.createVirtualRegister(RC); |
| 1317 | unsigned Mask2 = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1318 | unsigned ShiftedCmpVal = RegInfo.createVirtualRegister(RC); |
| 1319 | unsigned OldVal = RegInfo.createVirtualRegister(RC); |
| 1320 | unsigned MaskedOldVal0 = RegInfo.createVirtualRegister(RC); |
| 1321 | unsigned ShiftedNewVal = RegInfo.createVirtualRegister(RC); |
| 1322 | unsigned MaskLSB2 = RegInfo.createVirtualRegister(RC); |
| 1323 | unsigned PtrLSB2 = RegInfo.createVirtualRegister(RC); |
| 1324 | unsigned MaskUpper = RegInfo.createVirtualRegister(RC); |
| 1325 | unsigned MaskedCmpVal = RegInfo.createVirtualRegister(RC); |
| 1326 | unsigned MaskedNewVal = RegInfo.createVirtualRegister(RC); |
| 1327 | unsigned MaskedOldVal1 = RegInfo.createVirtualRegister(RC); |
| 1328 | unsigned StoreVal = RegInfo.createVirtualRegister(RC); |
| 1329 | unsigned SrlRes = RegInfo.createVirtualRegister(RC); |
| 1330 | unsigned SllRes = RegInfo.createVirtualRegister(RC); |
| 1331 | unsigned Success = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1332 | |
| 1333 | // insert new blocks after the current block |
| 1334 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 1335 | MachineBasicBlock *loop1MBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1336 | MachineBasicBlock *loop2MBB = MF->CreateMachineBasicBlock(LLVM_BB); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1337 | MachineBasicBlock *sinkMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1338 | MachineBasicBlock *exitMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1339 | MachineFunction::iterator It = BB; |
| 1340 | ++It; |
| 1341 | MF->insert(It, loop1MBB); |
| 1342 | MF->insert(It, loop2MBB); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1343 | MF->insert(It, sinkMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1344 | MF->insert(It, exitMBB); |
| 1345 | |
| 1346 | // Transfer the remainder of BB and its successor edges to exitMBB. |
| 1347 | exitMBB->splice(exitMBB->begin(), BB, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1348 | llvm::next(MachineBasicBlock::iterator(MI)), BB->end()); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1349 | exitMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 1350 | |
Akira Hatanaka | 81b4411 | 2011-07-19 17:09:53 +0000 | [diff] [blame] | 1351 | BB->addSuccessor(loop1MBB); |
| 1352 | loop1MBB->addSuccessor(sinkMBB); |
| 1353 | loop1MBB->addSuccessor(loop2MBB); |
| 1354 | loop2MBB->addSuccessor(loop1MBB); |
| 1355 | loop2MBB->addSuccessor(sinkMBB); |
| 1356 | sinkMBB->addSuccessor(exitMBB); |
| 1357 | |
Akira Hatanaka | 70564a9 | 2011-07-19 18:14:26 +0000 | [diff] [blame] | 1358 | // FIXME: computation of newval2 can be moved to loop2MBB. |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1359 | // thisMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1360 | // addiu masklsb2,$0,-4 # 0xfffffffc |
| 1361 | // and alignedaddr,ptr,masklsb2 |
| 1362 | // andi ptrlsb2,ptr,3 |
| 1363 | // sll shiftamt,ptrlsb2,3 |
| 1364 | // ori maskupper,$0,255 # 0xff |
| 1365 | // sll mask,maskupper,shiftamt |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1366 | // nor mask2,$0,mask |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1367 | // andi maskedcmpval,cmpval,255 |
| 1368 | // sll shiftedcmpval,maskedcmpval,shiftamt |
| 1369 | // andi maskednewval,newval,255 |
| 1370 | // sll shiftednewval,maskednewval,shiftamt |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1371 | int64_t MaskImm = (Size == 1) ? 255 : 65535; |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1372 | BuildMI(BB, dl, TII->get(Mips::ADDiu), MaskLSB2) |
| 1373 | .addReg(Mips::ZERO).addImm(-4); |
| 1374 | BuildMI(BB, dl, TII->get(Mips::AND), AlignedAddr) |
| 1375 | .addReg(Ptr).addReg(MaskLSB2); |
| 1376 | BuildMI(BB, dl, TII->get(Mips::ANDi), PtrLSB2).addReg(Ptr).addImm(3); |
| 1377 | BuildMI(BB, dl, TII->get(Mips::SLL), ShiftAmt).addReg(PtrLSB2).addImm(3); |
| 1378 | BuildMI(BB, dl, TII->get(Mips::ORi), MaskUpper) |
| 1379 | .addReg(Mips::ZERO).addImm(MaskImm); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1380 | BuildMI(BB, dl, TII->get(Mips::SLLV), Mask) |
| 1381 | .addReg(ShiftAmt).addReg(MaskUpper); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1382 | 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] | 1383 | BuildMI(BB, dl, TII->get(Mips::ANDi), MaskedCmpVal) |
| 1384 | .addReg(CmpVal).addImm(MaskImm); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1385 | BuildMI(BB, dl, TII->get(Mips::SLLV), ShiftedCmpVal) |
| 1386 | .addReg(ShiftAmt).addReg(MaskedCmpVal); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1387 | BuildMI(BB, dl, TII->get(Mips::ANDi), MaskedNewVal) |
| 1388 | .addReg(NewVal).addImm(MaskImm); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1389 | BuildMI(BB, dl, TII->get(Mips::SLLV), ShiftedNewVal) |
| 1390 | .addReg(ShiftAmt).addReg(MaskedNewVal); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1391 | |
| 1392 | // loop1MBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1393 | // ll oldval,0(alginedaddr) |
| 1394 | // and maskedoldval0,oldval,mask |
| 1395 | // bne maskedoldval0,shiftedcmpval,sinkMBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1396 | BB = loop1MBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1397 | BuildMI(BB, dl, TII->get(LL), OldVal).addReg(AlignedAddr).addImm(0); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1398 | BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal0) |
| 1399 | .addReg(OldVal).addReg(Mask); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1400 | BuildMI(BB, dl, TII->get(Mips::BNE)) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1401 | .addReg(MaskedOldVal0).addReg(ShiftedCmpVal).addMBB(sinkMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1402 | |
| 1403 | // loop2MBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1404 | // and maskedoldval1,oldval,mask2 |
| 1405 | // or storeval,maskedoldval1,shiftednewval |
| 1406 | // sc success,storeval,0(alignedaddr) |
| 1407 | // beq success,$0,loop1MBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1408 | BB = loop2MBB; |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1409 | BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal1) |
| 1410 | .addReg(OldVal).addReg(Mask2); |
| 1411 | BuildMI(BB, dl, TII->get(Mips::OR), StoreVal) |
| 1412 | .addReg(MaskedOldVal1).addReg(ShiftedNewVal); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1413 | BuildMI(BB, dl, TII->get(SC), Success) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1414 | .addReg(StoreVal).addReg(AlignedAddr).addImm(0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1415 | BuildMI(BB, dl, TII->get(Mips::BEQ)) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1416 | .addReg(Success).addReg(Mips::ZERO).addMBB(loop1MBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1417 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1418 | // sinkMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1419 | // srl srlres,maskedoldval0,shiftamt |
| 1420 | // sll sllres,srlres,24 |
| 1421 | // sra dest,sllres,24 |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1422 | BB = sinkMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1423 | int64_t ShiftImm = (Size == 1) ? 24 : 16; |
Akira Hatanaka | a308c67 | 2011-07-19 03:14:58 +0000 | [diff] [blame] | 1424 | |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1425 | BuildMI(BB, dl, TII->get(Mips::SRLV), SrlRes) |
| 1426 | .addReg(ShiftAmt).addReg(MaskedOldVal0); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1427 | BuildMI(BB, dl, TII->get(Mips::SLL), SllRes) |
| 1428 | .addReg(SrlRes).addImm(ShiftImm); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1429 | BuildMI(BB, dl, TII->get(Mips::SRA), Dest) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1430 | .addReg(SllRes).addImm(ShiftImm); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1431 | |
| 1432 | MI->eraseFromParent(); // The instruction is gone now. |
| 1433 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1434 | return exitMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1435 | } |
| 1436 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1437 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 1438 | // Misc Lower Operation implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1439 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | d3bdf19 | 2009-05-27 17:23:44 +0000 | [diff] [blame] | 1440 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1441 | LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1442 | { |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 1443 | MachineFunction &MF = DAG.getMachineFunction(); |
| 1444 | MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>(); |
Akira Hatanaka | c742e4f | 2011-11-11 04:06:38 +0000 | [diff] [blame] | 1445 | unsigned SP = IsN64 ? Mips::SP_64 : Mips::SP; |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 1446 | |
| 1447 | assert(getTargetMachine().getFrameLowering()->getStackAlignment() >= |
Akira Hatanaka | 053546c | 2011-05-25 02:20:00 +0000 | [diff] [blame] | 1448 | cast<ConstantSDNode>(Op.getOperand(2).getNode())->getZExtValue() && |
| 1449 | "Cannot lower if the alignment of the allocated space is larger than \ |
| 1450 | that of the stack."); |
| 1451 | |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1452 | SDValue Chain = Op.getOperand(0); |
| 1453 | SDValue Size = Op.getOperand(1); |
Dale Johannesen | a05dca4 | 2009-02-04 23:02:30 +0000 | [diff] [blame] | 1454 | DebugLoc dl = Op.getDebugLoc(); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1455 | |
| 1456 | // Get a reference from Mips stack pointer |
Akira Hatanaka | c742e4f | 2011-11-11 04:06:38 +0000 | [diff] [blame] | 1457 | SDValue StackPointer = DAG.getCopyFromReg(Chain, dl, SP, getPointerTy()); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1458 | |
| 1459 | // Subtract the dynamic size from the actual stack size to |
| 1460 | // obtain the new stack size. |
Akira Hatanaka | c742e4f | 2011-11-11 04:06:38 +0000 | [diff] [blame] | 1461 | SDValue Sub = DAG.getNode(ISD::SUB, dl, getPointerTy(), StackPointer, Size); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1462 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1463 | // The Sub result contains the new stack start address, so it |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1464 | // must be placed in the stack pointer register. |
Akira Hatanaka | c742e4f | 2011-11-11 04:06:38 +0000 | [diff] [blame] | 1465 | Chain = DAG.getCopyToReg(StackPointer.getValue(1), dl, SP, Sub, SDValue()); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1466 | |
| 1467 | // This node always has two return values: a new stack pointer |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1468 | // value and a chain |
Akira Hatanaka | c742e4f | 2011-11-11 04:06:38 +0000 | [diff] [blame] | 1469 | SDVTList VTLs = DAG.getVTList(getPointerTy(), MVT::Other); |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 1470 | SDValue Ptr = DAG.getFrameIndex(MipsFI->getDynAllocFI(), getPointerTy()); |
| 1471 | SDValue Ops[] = { Chain, Ptr, Chain.getValue(1) }; |
| 1472 | |
| 1473 | return DAG.getNode(MipsISD::DynAlloc, dl, VTLs, Ops, 3); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1474 | } |
| 1475 | |
| 1476 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1477 | LowerBRCOND(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 1478 | { |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1479 | // 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] | 1480 | // the block to branch to if the condition is true. |
| 1481 | SDValue Chain = Op.getOperand(0); |
| 1482 | SDValue Dest = Op.getOperand(2); |
Dale Johannesen | de06470 | 2009-02-06 21:50:26 +0000 | [diff] [blame] | 1483 | DebugLoc dl = Op.getDebugLoc(); |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 1484 | |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1485 | SDValue CondRes = CreateFPCmp(DAG, Op.getOperand(1)); |
| 1486 | |
Chris Lattner | 7a2bdde | 2011-04-15 05:18:47 +0000 | [diff] [blame] | 1487 | // Return if flag is not set by a floating point comparison. |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1488 | if (CondRes.getOpcode() != MipsISD::FPCmp) |
Bruno Cardoso Lopes | 4b877ca | 2008-07-30 17:06:13 +0000 | [diff] [blame] | 1489 | return Op; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1490 | |
Bruno Cardoso Lopes | 7728377 | 2008-07-31 18:31:28 +0000 | [diff] [blame] | 1491 | SDValue CCNode = CondRes.getOperand(2); |
Dan Gohman | f5aeb1a | 2008-09-12 16:56:44 +0000 | [diff] [blame] | 1492 | Mips::CondCode CC = |
| 1493 | (Mips::CondCode)cast<ConstantSDNode>(CCNode)->getZExtValue(); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1494 | SDValue BrCode = DAG.getConstant(GetFPBranchCodeFromCond(CC), MVT::i32); |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 1495 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1496 | return DAG.getNode(MipsISD::FPBrcond, dl, Op.getValueType(), Chain, BrCode, |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1497 | Dest, CondRes); |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 1498 | } |
| 1499 | |
| 1500 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1501 | LowerSELECT(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 1502 | { |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1503 | SDValue Cond = CreateFPCmp(DAG, Op.getOperand(0)); |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 1504 | |
Chris Lattner | 7a2bdde | 2011-04-15 05:18:47 +0000 | [diff] [blame] | 1505 | // Return if flag is not set by a floating point comparison. |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1506 | if (Cond.getOpcode() != MipsISD::FPCmp) |
| 1507 | return Op; |
Bruno Cardoso Lopes | 739e441 | 2008-08-13 07:13:40 +0000 | [diff] [blame] | 1508 | |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1509 | return CreateCMovFP(DAG, Cond, Op.getOperand(1), Op.getOperand(2), |
| 1510 | Op.getDebugLoc()); |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 1511 | } |
| 1512 | |
Akira Hatanaka | 0a40c23 | 2012-03-09 23:46:03 +0000 | [diff] [blame] | 1513 | SDValue MipsTargetLowering::LowerSETCC(SDValue Op, SelectionDAG &DAG) const { |
| 1514 | SDValue Cond = CreateFPCmp(DAG, Op); |
| 1515 | |
| 1516 | assert(Cond.getOpcode() == MipsISD::FPCmp && |
| 1517 | "Floating point operand expected."); |
| 1518 | |
| 1519 | SDValue True = DAG.getConstant(1, MVT::i32); |
| 1520 | SDValue False = DAG.getConstant(0, MVT::i32); |
| 1521 | |
| 1522 | return CreateCMovFP(DAG, Cond, True, False, Op.getDebugLoc()); |
| 1523 | } |
| 1524 | |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1525 | SDValue MipsTargetLowering::LowerGlobalAddress(SDValue Op, |
| 1526 | SelectionDAG &DAG) const { |
Dale Johannesen | de06470 | 2009-02-06 21:50:26 +0000 | [diff] [blame] | 1527 | // FIXME there isn't actually debug info here |
Dale Johannesen | 33c960f | 2009-02-04 20:06:27 +0000 | [diff] [blame] | 1528 | DebugLoc dl = Op.getDebugLoc(); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 1529 | const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal(); |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1530 | |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1531 | if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64) { |
Chris Lattner | e3736f8 | 2009-08-13 05:41:27 +0000 | [diff] [blame] | 1532 | SDVTList VTs = DAG.getVTList(MVT::i32); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1533 | |
Chris Lattner | b71b909 | 2009-08-13 06:28:06 +0000 | [diff] [blame] | 1534 | MipsTargetObjectFile &TLOF = (MipsTargetObjectFile&)getObjFileLowering(); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1535 | |
Chris Lattner | e3736f8 | 2009-08-13 05:41:27 +0000 | [diff] [blame] | 1536 | // %gp_rel relocation |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1537 | if (TLOF.IsGlobalInSmallSection(GV, getTargetMachine())) { |
| 1538 | SDValue GA = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0, |
Bruno Cardoso Lopes | c517cb0 | 2009-09-01 17:27:58 +0000 | [diff] [blame] | 1539 | MipsII::MO_GPREL); |
Chris Lattner | e3736f8 | 2009-08-13 05:41:27 +0000 | [diff] [blame] | 1540 | SDValue GPRelNode = DAG.getNode(MipsISD::GPRel, dl, VTs, &GA, 1); |
| 1541 | SDValue GOT = DAG.getGLOBAL_OFFSET_TABLE(MVT::i32); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1542 | return DAG.getNode(ISD::ADD, dl, MVT::i32, GOT, GPRelNode); |
Chris Lattner | e3736f8 | 2009-08-13 05:41:27 +0000 | [diff] [blame] | 1543 | } |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1544 | // %hi/%lo relocation |
Akira Hatanaka | e2e436a | 2011-04-01 21:41:06 +0000 | [diff] [blame] | 1545 | SDValue GAHi = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0, |
| 1546 | MipsII::MO_ABS_HI); |
| 1547 | SDValue GALo = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0, |
| 1548 | MipsII::MO_ABS_LO); |
| 1549 | SDValue HiPart = DAG.getNode(MipsISD::Hi, dl, VTs, &GAHi, 1); |
| 1550 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, GALo); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 1551 | return DAG.getNode(ISD::ADD, dl, MVT::i32, HiPart, Lo); |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1552 | } |
| 1553 | |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1554 | EVT ValTy = Op.getValueType(); |
| 1555 | bool HasGotOfst = (GV->hasInternalLinkage() || |
| 1556 | (GV->hasLocalLinkage() && !isa<Function>(GV))); |
Akira Hatanaka | 56ce6b3 | 2012-04-04 22:16:36 +0000 | [diff] [blame] | 1557 | unsigned GotFlag = HasMips64 ? |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1558 | (HasGotOfst ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT_DISP) : |
Bruno Cardoso Lopes | e3d3572 | 2011-12-07 00:28:57 +0000 | [diff] [blame] | 1559 | (HasGotOfst ? MipsII::MO_GOT : MipsII::MO_GOT16); |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1560 | SDValue GA = DAG.getTargetGlobalAddress(GV, dl, ValTy, 0, GotFlag); |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 1561 | GA = DAG.getNode(MipsISD::Wrapper, dl, ValTy, GetGlobalReg(DAG, ValTy), GA); |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1562 | SDValue ResNode = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), GA, |
| 1563 | MachinePointerInfo(), false, false, false, 0); |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1564 | // On functions and global targets not internal linked only |
| 1565 | // a load from got/GP is necessary for PIC to work. |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1566 | if (!HasGotOfst) |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1567 | return ResNode; |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1568 | SDValue GALo = DAG.getTargetGlobalAddress(GV, dl, ValTy, 0, |
Akira Hatanaka | 56ce6b3 | 2012-04-04 22:16:36 +0000 | [diff] [blame] | 1569 | HasMips64 ? MipsII::MO_GOT_OFST : |
| 1570 | MipsII::MO_ABS_LO); |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1571 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, ValTy, GALo); |
| 1572 | return DAG.getNode(ISD::ADD, dl, ValTy, ResNode, Lo); |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1573 | } |
| 1574 | |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 1575 | SDValue MipsTargetLowering::LowerBlockAddress(SDValue Op, |
| 1576 | SelectionDAG &DAG) const { |
Akira Hatanaka | f48eb53 | 2011-04-25 17:10:45 +0000 | [diff] [blame] | 1577 | const BlockAddress *BA = cast<BlockAddressSDNode>(Op)->getBlockAddress(); |
| 1578 | // FIXME there isn't actually debug info here |
| 1579 | DebugLoc dl = Op.getDebugLoc(); |
| 1580 | |
Akira Hatanaka | 9b944a8 | 2011-11-16 22:42:10 +0000 | [diff] [blame] | 1581 | if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64) { |
Akira Hatanaka | f48eb53 | 2011-04-25 17:10:45 +0000 | [diff] [blame] | 1582 | // %hi/%lo relocation |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1583 | SDValue BAHi = DAG.getBlockAddress(BA, MVT::i32, true, MipsII::MO_ABS_HI); |
| 1584 | SDValue BALo = DAG.getBlockAddress(BA, MVT::i32, true, MipsII::MO_ABS_LO); |
Akira Hatanaka | f48eb53 | 2011-04-25 17:10:45 +0000 | [diff] [blame] | 1585 | SDValue Hi = DAG.getNode(MipsISD::Hi, dl, MVT::i32, BAHi); |
| 1586 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, BALo); |
| 1587 | return DAG.getNode(ISD::ADD, dl, MVT::i32, Hi, Lo); |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 1588 | } |
Akira Hatanaka | f48eb53 | 2011-04-25 17:10:45 +0000 | [diff] [blame] | 1589 | |
Akira Hatanaka | 9b944a8 | 2011-11-16 22:42:10 +0000 | [diff] [blame] | 1590 | EVT ValTy = Op.getValueType(); |
Akira Hatanaka | 03d830e | 2012-04-04 18:22:53 +0000 | [diff] [blame] | 1591 | unsigned GOTFlag = HasMips64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT; |
| 1592 | unsigned OFSTFlag = HasMips64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO; |
Akira Hatanaka | 9b944a8 | 2011-11-16 22:42:10 +0000 | [diff] [blame] | 1593 | SDValue BAGOTOffset = DAG.getBlockAddress(BA, ValTy, true, GOTFlag); |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 1594 | BAGOTOffset = DAG.getNode(MipsISD::Wrapper, dl, ValTy, |
| 1595 | GetGlobalReg(DAG, ValTy), BAGOTOffset); |
Akira Hatanaka | 9b944a8 | 2011-11-16 22:42:10 +0000 | [diff] [blame] | 1596 | SDValue BALOOffset = DAG.getBlockAddress(BA, ValTy, true, OFSTFlag); |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1597 | SDValue Load = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), BAGOTOffset, |
Pete Cooper | d752e0f | 2011-11-08 18:42:53 +0000 | [diff] [blame] | 1598 | MachinePointerInfo(), false, false, false, 0); |
Akira Hatanaka | 9b944a8 | 2011-11-16 22:42:10 +0000 | [diff] [blame] | 1599 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, ValTy, BALOOffset); |
| 1600 | return DAG.getNode(ISD::ADD, dl, ValTy, Load, Lo); |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 1601 | } |
| 1602 | |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1603 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1604 | LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1605 | { |
Akira Hatanaka | 3faac0a | 2011-12-14 18:26:41 +0000 | [diff] [blame] | 1606 | // If the relocation model is PIC, use the General Dynamic TLS Model or |
| 1607 | // Local Dynamic TLS model, otherwise use the Initial Exec or |
| 1608 | // Local Exec TLS Model. |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1609 | |
| 1610 | GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(Op); |
| 1611 | DebugLoc dl = GA->getDebugLoc(); |
| 1612 | const GlobalValue *GV = GA->getGlobal(); |
| 1613 | EVT PtrVT = getPointerTy(); |
| 1614 | |
| 1615 | if (getTargetMachine().getRelocationModel() == Reloc::PIC_) { |
| 1616 | // General Dynamic TLS Model |
Akira Hatanaka | 3faac0a | 2011-12-14 18:26:41 +0000 | [diff] [blame] | 1617 | bool LocalDynamic = GV->hasInternalLinkage(); |
| 1618 | unsigned Flag = LocalDynamic ? MipsII::MO_TLSLDM :MipsII::MO_TLSGD; |
| 1619 | SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, Flag); |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 1620 | SDValue Argument = DAG.getNode(MipsISD::Wrapper, dl, PtrVT, |
| 1621 | GetGlobalReg(DAG, PtrVT), TGA); |
Akira Hatanaka | 7a7194b | 2011-12-08 21:05:38 +0000 | [diff] [blame] | 1622 | unsigned PtrSize = PtrVT.getSizeInBits(); |
| 1623 | IntegerType *PtrTy = Type::getIntNTy(*DAG.getContext(), PtrSize); |
| 1624 | |
Benjamin Kramer | 5eccf67 | 2011-12-11 12:21:34 +0000 | [diff] [blame] | 1625 | SDValue TlsGetAddr = DAG.getExternalSymbol("__tls_get_addr", PtrVT); |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1626 | |
| 1627 | ArgListTy Args; |
| 1628 | ArgListEntry Entry; |
| 1629 | Entry.Node = Argument; |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1630 | Entry.Ty = PtrTy; |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1631 | Args.push_back(Entry); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 1632 | |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1633 | std::pair<SDValue, SDValue> CallResult = |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1634 | LowerCallTo(DAG.getEntryNode(), PtrTy, |
Evan Cheng | 4bfcd4a | 2012-02-28 18:51:51 +0000 | [diff] [blame] | 1635 | false, false, false, false, 0, CallingConv::C, |
| 1636 | /*isTailCall=*/false, /*doesNotRet=*/false, |
| 1637 | /*isReturnValueUsed=*/true, |
Akira Hatanaka | 7a7194b | 2011-12-08 21:05:38 +0000 | [diff] [blame] | 1638 | TlsGetAddr, Args, DAG, dl); |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1639 | |
Akira Hatanaka | 3faac0a | 2011-12-14 18:26:41 +0000 | [diff] [blame] | 1640 | SDValue Ret = CallResult.first; |
| 1641 | |
| 1642 | if (!LocalDynamic) |
| 1643 | return Ret; |
| 1644 | |
| 1645 | SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
| 1646 | MipsII::MO_DTPREL_HI); |
| 1647 | SDValue Hi = DAG.getNode(MipsISD::Hi, dl, PtrVT, TGAHi); |
| 1648 | SDValue TGALo = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
| 1649 | MipsII::MO_DTPREL_LO); |
| 1650 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, TGALo); |
| 1651 | SDValue Add = DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Ret); |
| 1652 | return DAG.getNode(ISD::ADD, dl, PtrVT, Add, Lo); |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1653 | } |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1654 | |
| 1655 | SDValue Offset; |
| 1656 | if (GV->isDeclaration()) { |
| 1657 | // Initial Exec TLS Model |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1658 | SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1659 | MipsII::MO_GOTTPREL); |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 1660 | TGA = DAG.getNode(MipsISD::Wrapper, dl, PtrVT, GetGlobalReg(DAG, PtrVT), |
| 1661 | TGA); |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1662 | Offset = DAG.getLoad(PtrVT, dl, |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1663 | DAG.getEntryNode(), TGA, MachinePointerInfo(), |
Pete Cooper | d752e0f | 2011-11-08 18:42:53 +0000 | [diff] [blame] | 1664 | false, false, false, 0); |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1665 | } else { |
| 1666 | // Local Exec TLS Model |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1667 | SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1668 | MipsII::MO_TPREL_HI); |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1669 | SDValue TGALo = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1670 | MipsII::MO_TPREL_LO); |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1671 | SDValue Hi = DAG.getNode(MipsISD::Hi, dl, PtrVT, TGAHi); |
| 1672 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, TGALo); |
| 1673 | Offset = DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Lo); |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1674 | } |
| 1675 | |
| 1676 | SDValue ThreadPointer = DAG.getNode(MipsISD::ThreadPointer, dl, PtrVT); |
| 1677 | return DAG.getNode(ISD::ADD, dl, PtrVT, ThreadPointer, Offset); |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1678 | } |
| 1679 | |
| 1680 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1681 | LowerJumpTable(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 753a987 | 2007-11-12 19:49:57 +0000 | [diff] [blame] | 1682 | { |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1683 | SDValue HiPart, JTI, JTILo; |
Dale Johannesen | de06470 | 2009-02-06 21:50:26 +0000 | [diff] [blame] | 1684 | // FIXME there isn't actually debug info here |
Dale Johannesen | 33c960f | 2009-02-04 20:06:27 +0000 | [diff] [blame] | 1685 | DebugLoc dl = Op.getDebugLoc(); |
Bruno Cardoso Lopes | c517cb0 | 2009-09-01 17:27:58 +0000 | [diff] [blame] | 1686 | bool IsPIC = getTargetMachine().getRelocationModel() == Reloc::PIC_; |
Owen Anderson | e50ed30 | 2009-08-10 22:56:29 +0000 | [diff] [blame] | 1687 | EVT PtrVT = Op.getValueType(); |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1688 | JumpTableSDNode *JT = cast<JumpTableSDNode>(Op); |
Bruno Cardoso Lopes | 753a987 | 2007-11-12 19:49:57 +0000 | [diff] [blame] | 1689 | |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1690 | if (!IsPIC && !IsN64) { |
| 1691 | JTI = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, MipsII::MO_ABS_HI); |
| 1692 | HiPart = DAG.getNode(MipsISD::Hi, dl, PtrVT, JTI); |
| 1693 | JTILo = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, MipsII::MO_ABS_LO); |
Akira Hatanaka | 342837d | 2011-05-28 01:07:07 +0000 | [diff] [blame] | 1694 | } else {// Emit Load from Global Pointer |
Akira Hatanaka | c75ceb7 | 2012-04-04 18:31:32 +0000 | [diff] [blame] | 1695 | unsigned GOTFlag = HasMips64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT; |
| 1696 | unsigned OfstFlag = HasMips64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO; |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1697 | JTI = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, GOTFlag); |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 1698 | JTI = DAG.getNode(MipsISD::Wrapper, dl, PtrVT, GetGlobalReg(DAG, PtrVT), |
| 1699 | JTI); |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1700 | HiPart = DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), JTI, |
| 1701 | MachinePointerInfo(), false, false, false, 0); |
| 1702 | JTILo = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, OfstFlag); |
Akira Hatanaka | 342837d | 2011-05-28 01:07:07 +0000 | [diff] [blame] | 1703 | } |
Bruno Cardoso Lopes | 753a987 | 2007-11-12 19:49:57 +0000 | [diff] [blame] | 1704 | |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1705 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, JTILo); |
| 1706 | return DAG.getNode(ISD::ADD, dl, PtrVT, HiPart, Lo); |
Bruno Cardoso Lopes | 753a987 | 2007-11-12 19:49:57 +0000 | [diff] [blame] | 1707 | } |
| 1708 | |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 1709 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1710 | LowerConstantPool(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 1711 | { |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 1712 | SDValue ResNode; |
Bruno Cardoso Lopes | 92e87f2 | 2008-07-23 16:01:50 +0000 | [diff] [blame] | 1713 | ConstantPoolSDNode *N = cast<ConstantPoolSDNode>(Op); |
Dan Gohman | 46510a7 | 2010-04-15 01:51:59 +0000 | [diff] [blame] | 1714 | const Constant *C = N->getConstVal(); |
Dale Johannesen | de06470 | 2009-02-06 21:50:26 +0000 | [diff] [blame] | 1715 | // FIXME there isn't actually debug info here |
| 1716 | DebugLoc dl = Op.getDebugLoc(); |
Bruno Cardoso Lopes | 92e87f2 | 2008-07-23 16:01:50 +0000 | [diff] [blame] | 1717 | |
| 1718 | // gp_rel relocation |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1719 | // FIXME: we should reference the constant pool using small data sections, |
Chris Lattner | 7a2bdde | 2011-04-15 05:18:47 +0000 | [diff] [blame] | 1720 | // but the asm printer currently doesn't support this feature without |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1721 | // 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] | 1722 | // stuff below. |
Eli Friedman | e2c7408 | 2009-08-03 02:22:28 +0000 | [diff] [blame] | 1723 | //if (IsInSmallSection(C->getType())) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 1724 | // SDValue GPRelNode = DAG.getNode(MipsISD::GPRel, MVT::i32, CP); |
| 1725 | // SDValue GOT = DAG.getGLOBAL_OFFSET_TABLE(MVT::i32); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1726 | // ResNode = DAG.getNode(ISD::ADD, MVT::i32, GOT, GPRelNode); |
Bruno Cardoso Lopes | d71cebf | 2009-11-25 12:17:58 +0000 | [diff] [blame] | 1727 | |
Akira Hatanaka | 13daee3 | 2012-03-27 02:55:31 +0000 | [diff] [blame] | 1728 | if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64) { |
Akira Hatanaka | e2e436a | 2011-04-01 21:41:06 +0000 | [diff] [blame] | 1729 | SDValue CPHi = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment(), |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1730 | N->getOffset(), MipsII::MO_ABS_HI); |
Akira Hatanaka | e2e436a | 2011-04-01 21:41:06 +0000 | [diff] [blame] | 1731 | SDValue CPLo = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment(), |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1732 | N->getOffset(), MipsII::MO_ABS_LO); |
Akira Hatanaka | e2e436a | 2011-04-01 21:41:06 +0000 | [diff] [blame] | 1733 | SDValue HiPart = DAG.getNode(MipsISD::Hi, dl, MVT::i32, CPHi); |
| 1734 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, CPLo); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 1735 | ResNode = DAG.getNode(ISD::ADD, dl, MVT::i32, HiPart, Lo); |
Bruno Cardoso Lopes | d71cebf | 2009-11-25 12:17:58 +0000 | [diff] [blame] | 1736 | } else { |
Akira Hatanaka | 620db89 | 2011-11-16 22:44:38 +0000 | [diff] [blame] | 1737 | EVT ValTy = Op.getValueType(); |
Akira Hatanaka | 86a2733 | 2012-04-04 18:26:12 +0000 | [diff] [blame] | 1738 | unsigned GOTFlag = HasMips64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT; |
| 1739 | unsigned OFSTFlag = HasMips64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO; |
Akira Hatanaka | 620db89 | 2011-11-16 22:44:38 +0000 | [diff] [blame] | 1740 | SDValue CP = DAG.getTargetConstantPool(C, ValTy, N->getAlignment(), |
| 1741 | N->getOffset(), GOTFlag); |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 1742 | CP = DAG.getNode(MipsISD::Wrapper, dl, ValTy, GetGlobalReg(DAG, ValTy), CP); |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1743 | SDValue Load = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), CP, |
| 1744 | MachinePointerInfo::getConstantPool(), false, |
| 1745 | false, false, 0); |
Akira Hatanaka | 620db89 | 2011-11-16 22:44:38 +0000 | [diff] [blame] | 1746 | SDValue CPLo = DAG.getTargetConstantPool(C, ValTy, N->getAlignment(), |
| 1747 | N->getOffset(), OFSTFlag); |
| 1748 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, ValTy, CPLo); |
| 1749 | ResNode = DAG.getNode(ISD::ADD, dl, ValTy, Load, Lo); |
Bruno Cardoso Lopes | d71cebf | 2009-11-25 12:17:58 +0000 | [diff] [blame] | 1750 | } |
Bruno Cardoso Lopes | 92e87f2 | 2008-07-23 16:01:50 +0000 | [diff] [blame] | 1751 | |
| 1752 | return ResNode; |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 1753 | } |
| 1754 | |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1755 | SDValue MipsTargetLowering::LowerVASTART(SDValue Op, SelectionDAG &DAG) const { |
Dan Gohman | 1e93df6 | 2010-04-17 14:41:14 +0000 | [diff] [blame] | 1756 | MachineFunction &MF = DAG.getMachineFunction(); |
| 1757 | MipsFunctionInfo *FuncInfo = MF.getInfo<MipsFunctionInfo>(); |
| 1758 | |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 1759 | DebugLoc dl = Op.getDebugLoc(); |
Dan Gohman | 1e93df6 | 2010-04-17 14:41:14 +0000 | [diff] [blame] | 1760 | SDValue FI = DAG.getFrameIndex(FuncInfo->getVarArgsFrameIndex(), |
| 1761 | getPointerTy()); |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 1762 | |
| 1763 | // vastart just stores the address of the VarArgsFrameIndex slot into the |
| 1764 | // memory location argument. |
| 1765 | const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue(); |
Chris Lattner | 8026a9d | 2010-09-21 17:50:43 +0000 | [diff] [blame] | 1766 | return DAG.getStore(Op.getOperand(0), dl, FI, Op.getOperand(1), |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1767 | MachinePointerInfo(SV), false, false, 0); |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 1768 | } |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 1769 | |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 1770 | static SDValue LowerFCOPYSIGN32(SDValue Op, SelectionDAG &DAG, bool HasR2) { |
| 1771 | EVT TyX = Op.getOperand(0).getValueType(); |
| 1772 | EVT TyY = Op.getOperand(1).getValueType(); |
| 1773 | SDValue Const1 = DAG.getConstant(1, MVT::i32); |
| 1774 | SDValue Const31 = DAG.getConstant(31, MVT::i32); |
| 1775 | DebugLoc DL = Op.getDebugLoc(); |
| 1776 | SDValue Res; |
| 1777 | |
| 1778 | // If operand is of type f64, extract the upper 32-bit. Otherwise, bitcast it |
| 1779 | // to i32. |
| 1780 | SDValue X = (TyX == MVT::f32) ? |
| 1781 | DAG.getNode(ISD::BITCAST, DL, MVT::i32, Op.getOperand(0)) : |
| 1782 | DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32, Op.getOperand(0), |
| 1783 | Const1); |
| 1784 | SDValue Y = (TyY == MVT::f32) ? |
| 1785 | DAG.getNode(ISD::BITCAST, DL, MVT::i32, Op.getOperand(1)) : |
| 1786 | DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32, Op.getOperand(1), |
| 1787 | Const1); |
| 1788 | |
| 1789 | if (HasR2) { |
| 1790 | // ext E, Y, 31, 1 ; extract bit31 of Y |
| 1791 | // ins X, E, 31, 1 ; insert extracted bit at bit31 of X |
| 1792 | SDValue E = DAG.getNode(MipsISD::Ext, DL, MVT::i32, Y, Const31, Const1); |
| 1793 | Res = DAG.getNode(MipsISD::Ins, DL, MVT::i32, E, Const31, Const1, X); |
| 1794 | } else { |
| 1795 | // sll SllX, X, 1 |
| 1796 | // srl SrlX, SllX, 1 |
| 1797 | // srl SrlY, Y, 31 |
| 1798 | // sll SllY, SrlX, 31 |
| 1799 | // or Or, SrlX, SllY |
| 1800 | SDValue SllX = DAG.getNode(ISD::SHL, DL, MVT::i32, X, Const1); |
| 1801 | SDValue SrlX = DAG.getNode(ISD::SRL, DL, MVT::i32, SllX, Const1); |
| 1802 | SDValue SrlY = DAG.getNode(ISD::SRL, DL, MVT::i32, Y, Const31); |
| 1803 | SDValue SllY = DAG.getNode(ISD::SHL, DL, MVT::i32, SrlY, Const31); |
| 1804 | Res = DAG.getNode(ISD::OR, DL, MVT::i32, SrlX, SllY); |
| 1805 | } |
| 1806 | |
| 1807 | if (TyX == MVT::f32) |
| 1808 | return DAG.getNode(ISD::BITCAST, DL, Op.getOperand(0).getValueType(), Res); |
| 1809 | |
| 1810 | SDValue LowX = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32, |
| 1811 | Op.getOperand(0), DAG.getConstant(0, MVT::i32)); |
| 1812 | return DAG.getNode(MipsISD::BuildPairF64, DL, MVT::f64, LowX, Res); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1813 | } |
| 1814 | |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 1815 | static SDValue LowerFCOPYSIGN64(SDValue Op, SelectionDAG &DAG, bool HasR2) { |
| 1816 | unsigned WidthX = Op.getOperand(0).getValueSizeInBits(); |
| 1817 | unsigned WidthY = Op.getOperand(1).getValueSizeInBits(); |
| 1818 | EVT TyX = MVT::getIntegerVT(WidthX), TyY = MVT::getIntegerVT(WidthY); |
| 1819 | SDValue Const1 = DAG.getConstant(1, MVT::i32); |
| 1820 | DebugLoc DL = Op.getDebugLoc(); |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 1821 | |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 1822 | // Bitcast to integer nodes. |
| 1823 | SDValue X = DAG.getNode(ISD::BITCAST, DL, TyX, Op.getOperand(0)); |
| 1824 | SDValue Y = DAG.getNode(ISD::BITCAST, DL, TyY, Op.getOperand(1)); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1825 | |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 1826 | if (HasR2) { |
| 1827 | // ext E, Y, width(Y) - 1, 1 ; extract bit width(Y)-1 of Y |
| 1828 | // ins X, E, width(X) - 1, 1 ; insert extracted bit at bit width(X)-1 of X |
| 1829 | SDValue E = DAG.getNode(MipsISD::Ext, DL, TyY, Y, |
| 1830 | DAG.getConstant(WidthY - 1, MVT::i32), Const1); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1831 | |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 1832 | if (WidthX > WidthY) |
| 1833 | E = DAG.getNode(ISD::ZERO_EXTEND, DL, TyX, E); |
| 1834 | else if (WidthY > WidthX) |
| 1835 | E = DAG.getNode(ISD::TRUNCATE, DL, TyX, E); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1836 | |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 1837 | SDValue I = DAG.getNode(MipsISD::Ins, DL, TyX, E, |
| 1838 | DAG.getConstant(WidthX - 1, MVT::i32), Const1, X); |
| 1839 | return DAG.getNode(ISD::BITCAST, DL, Op.getOperand(0).getValueType(), I); |
| 1840 | } |
| 1841 | |
| 1842 | // (d)sll SllX, X, 1 |
| 1843 | // (d)srl SrlX, SllX, 1 |
| 1844 | // (d)srl SrlY, Y, width(Y)-1 |
| 1845 | // (d)sll SllY, SrlX, width(Y)-1 |
| 1846 | // or Or, SrlX, SllY |
| 1847 | SDValue SllX = DAG.getNode(ISD::SHL, DL, TyX, X, Const1); |
| 1848 | SDValue SrlX = DAG.getNode(ISD::SRL, DL, TyX, SllX, Const1); |
| 1849 | SDValue SrlY = DAG.getNode(ISD::SRL, DL, TyY, Y, |
| 1850 | DAG.getConstant(WidthY - 1, MVT::i32)); |
| 1851 | |
| 1852 | if (WidthX > WidthY) |
| 1853 | SrlY = DAG.getNode(ISD::ZERO_EXTEND, DL, TyX, SrlY); |
| 1854 | else if (WidthY > WidthX) |
| 1855 | SrlY = DAG.getNode(ISD::TRUNCATE, DL, TyX, SrlY); |
| 1856 | |
| 1857 | SDValue SllY = DAG.getNode(ISD::SHL, DL, TyX, SrlY, |
| 1858 | DAG.getConstant(WidthX - 1, MVT::i32)); |
| 1859 | SDValue Or = DAG.getNode(ISD::OR, DL, TyX, SrlX, SllY); |
| 1860 | return DAG.getNode(ISD::BITCAST, DL, Op.getOperand(0).getValueType(), Or); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1861 | } |
| 1862 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1863 | SDValue |
| 1864 | MipsTargetLowering::LowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const { |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 1865 | if (Subtarget->hasMips64()) |
| 1866 | return LowerFCOPYSIGN64(Op, DAG, Subtarget->hasMips32r2()); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1867 | |
Akira Hatanaka | 056c51e | 2012-04-11 22:13:04 +0000 | [diff] [blame] | 1868 | return LowerFCOPYSIGN32(Op, DAG, Subtarget->hasMips32r2()); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1869 | } |
| 1870 | |
Akira Hatanaka | c12a6e6 | 2012-04-11 22:49:04 +0000 | [diff] [blame] | 1871 | static SDValue LowerFABS32(SDValue Op, SelectionDAG &DAG, bool HasR2) { |
| 1872 | SDValue Res, Const1 = DAG.getConstant(1, MVT::i32); |
| 1873 | DebugLoc DL = Op.getDebugLoc(); |
| 1874 | |
| 1875 | // If operand is of type f64, extract the upper 32-bit. Otherwise, bitcast it |
| 1876 | // to i32. |
| 1877 | SDValue X = (Op.getValueType() == MVT::f32) ? |
| 1878 | DAG.getNode(ISD::BITCAST, DL, MVT::i32, Op.getOperand(0)) : |
| 1879 | DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32, Op.getOperand(0), |
| 1880 | Const1); |
| 1881 | |
| 1882 | // Clear MSB. |
| 1883 | if (HasR2) |
| 1884 | Res = DAG.getNode(MipsISD::Ins, DL, MVT::i32, |
| 1885 | DAG.getRegister(Mips::ZERO, MVT::i32), |
| 1886 | DAG.getConstant(31, MVT::i32), Const1, X); |
| 1887 | else { |
| 1888 | SDValue SllX = DAG.getNode(ISD::SHL, DL, MVT::i32, X, Const1); |
| 1889 | Res = DAG.getNode(ISD::SRL, DL, MVT::i32, SllX, Const1); |
| 1890 | } |
| 1891 | |
| 1892 | if (Op.getValueType() == MVT::f32) |
| 1893 | return DAG.getNode(ISD::BITCAST, DL, MVT::f32, Res); |
| 1894 | |
| 1895 | SDValue LowX = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32, |
| 1896 | Op.getOperand(0), DAG.getConstant(0, MVT::i32)); |
| 1897 | return DAG.getNode(MipsISD::BuildPairF64, DL, MVT::f64, LowX, Res); |
| 1898 | } |
| 1899 | |
| 1900 | static SDValue LowerFABS64(SDValue Op, SelectionDAG &DAG, bool HasR2) { |
| 1901 | SDValue Res, Const1 = DAG.getConstant(1, MVT::i32); |
| 1902 | DebugLoc DL = Op.getDebugLoc(); |
| 1903 | |
| 1904 | // Bitcast to integer node. |
| 1905 | SDValue X = DAG.getNode(ISD::BITCAST, DL, MVT::i64, Op.getOperand(0)); |
| 1906 | |
| 1907 | // Clear MSB. |
| 1908 | if (HasR2) |
| 1909 | Res = DAG.getNode(MipsISD::Ins, DL, MVT::i64, |
| 1910 | DAG.getRegister(Mips::ZERO_64, MVT::i64), |
| 1911 | DAG.getConstant(63, MVT::i32), Const1, X); |
| 1912 | else { |
| 1913 | SDValue SllX = DAG.getNode(ISD::SHL, DL, MVT::i64, X, Const1); |
| 1914 | Res = DAG.getNode(ISD::SRL, DL, MVT::i64, SllX, Const1); |
| 1915 | } |
| 1916 | |
| 1917 | return DAG.getNode(ISD::BITCAST, DL, MVT::f64, Res); |
| 1918 | } |
| 1919 | |
| 1920 | SDValue |
| 1921 | MipsTargetLowering::LowerFABS(SDValue Op, SelectionDAG &DAG) const { |
| 1922 | if (Subtarget->hasMips64() && (Op.getValueType() == MVT::f64)) |
| 1923 | return LowerFABS64(Op, DAG, Subtarget->hasMips32r2()); |
| 1924 | |
| 1925 | return LowerFABS32(Op, DAG, Subtarget->hasMips32r2()); |
| 1926 | } |
| 1927 | |
Akira Hatanaka | 2e59147 | 2011-06-02 00:24:44 +0000 | [diff] [blame] | 1928 | SDValue MipsTargetLowering:: |
| 1929 | LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const { |
Bruno Cardoso Lopes | e0b5cfc | 2011-06-16 00:40:02 +0000 | [diff] [blame] | 1930 | // check the depth |
| 1931 | assert((cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue() == 0) && |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1932 | "Frame address can only be determined for current frame."); |
Akira Hatanaka | 2e59147 | 2011-06-02 00:24:44 +0000 | [diff] [blame] | 1933 | |
| 1934 | MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo(); |
| 1935 | MFI->setFrameAddressIsTaken(true); |
| 1936 | EVT VT = Op.getValueType(); |
| 1937 | DebugLoc dl = Op.getDebugLoc(); |
Akira Hatanaka | 46ac439 | 2011-11-11 04:11:56 +0000 | [diff] [blame] | 1938 | SDValue FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, |
| 1939 | IsN64 ? Mips::FP_64 : Mips::FP, VT); |
Akira Hatanaka | 2e59147 | 2011-06-02 00:24:44 +0000 | [diff] [blame] | 1940 | return FrameAddr; |
| 1941 | } |
| 1942 | |
Akira Hatanaka | db54826 | 2011-07-19 23:30:50 +0000 | [diff] [blame] | 1943 | // TODO: set SType according to the desired memory barrier behavior. |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1944 | SDValue |
| 1945 | MipsTargetLowering::LowerMEMBARRIER(SDValue Op, SelectionDAG& DAG) const { |
Akira Hatanaka | db54826 | 2011-07-19 23:30:50 +0000 | [diff] [blame] | 1946 | unsigned SType = 0; |
| 1947 | DebugLoc dl = Op.getDebugLoc(); |
| 1948 | return DAG.getNode(MipsISD::Sync, dl, MVT::Other, Op.getOperand(0), |
| 1949 | DAG.getConstant(SType, MVT::i32)); |
| 1950 | } |
| 1951 | |
Eli Friedman | 1464846 | 2011-07-27 22:21:52 +0000 | [diff] [blame] | 1952 | SDValue MipsTargetLowering::LowerATOMIC_FENCE(SDValue Op, |
| 1953 | SelectionDAG& DAG) const { |
| 1954 | // FIXME: Need pseudo-fence for 'singlethread' fences |
| 1955 | // FIXME: Set SType for weaker fences where supported/appropriate. |
| 1956 | unsigned SType = 0; |
| 1957 | DebugLoc dl = Op.getDebugLoc(); |
| 1958 | return DAG.getNode(MipsISD::Sync, dl, MVT::Other, Op.getOperand(0), |
| 1959 | DAG.getConstant(SType, MVT::i32)); |
| 1960 | } |
| 1961 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1962 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 1963 | // Calling Convention Implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1964 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 1965 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1966 | //===----------------------------------------------------------------------===// |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1967 | // TODO: Implement a generic logic using tblgen that can support this. |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 1968 | // Mips O32 ABI rules: |
| 1969 | // --- |
| 1970 | // i32 - Passed in A0, A1, A2, A3 and stack |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1971 | // 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] | 1972 | // an argument. Otherwise, passed in A1, A2, A3 and stack. |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1973 | // f64 - Only passed in two aliased f32 registers if no int reg has been used |
| 1974 | // 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] | 1975 | // not used, it must be shadowed. If only A3 is avaiable, shadow it and |
| 1976 | // go to stack. |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 1977 | // |
| 1978 | // 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] | 1979 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 1980 | |
Duncan Sands | 1e96bab | 2010-11-04 10:49:57 +0000 | [diff] [blame] | 1981 | static bool CC_MipsO32(unsigned ValNo, MVT ValVT, |
Duncan Sands | 1440e8b | 2010-11-03 11:35:31 +0000 | [diff] [blame] | 1982 | MVT LocVT, CCValAssign::LocInfo LocInfo, |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 1983 | ISD::ArgFlagsTy ArgFlags, CCState &State) { |
| 1984 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1985 | static const unsigned IntRegsSize=4, FloatRegsSize=2; |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 1986 | |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 1987 | static const uint16_t IntRegs[] = { |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 1988 | Mips::A0, Mips::A1, Mips::A2, Mips::A3 |
| 1989 | }; |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 1990 | static const uint16_t F32Regs[] = { |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 1991 | Mips::F12, Mips::F14 |
| 1992 | }; |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 1993 | static const uint16_t F64Regs[] = { |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 1994 | Mips::D6, Mips::D7 |
| 1995 | }; |
| 1996 | |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 1997 | // ByVal Args |
| 1998 | if (ArgFlags.isByVal()) { |
| 1999 | State.HandleByVal(ValNo, ValVT, LocVT, LocInfo, |
| 2000 | 1 /*MinSize*/, 4 /*MinAlign*/, ArgFlags); |
| 2001 | unsigned NextReg = (State.getNextStackOffset() + 3) / 4; |
| 2002 | for (unsigned r = State.getFirstUnallocated(IntRegs, IntRegsSize); |
| 2003 | r < std::min(IntRegsSize, NextReg); ++r) |
| 2004 | State.AllocateReg(IntRegs[r]); |
| 2005 | return false; |
| 2006 | } |
| 2007 | |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2008 | // Promote i8 and i16 |
| 2009 | if (LocVT == MVT::i8 || LocVT == MVT::i16) { |
| 2010 | LocVT = MVT::i32; |
| 2011 | if (ArgFlags.isSExt()) |
| 2012 | LocInfo = CCValAssign::SExt; |
| 2013 | else if (ArgFlags.isZExt()) |
| 2014 | LocInfo = CCValAssign::ZExt; |
| 2015 | else |
| 2016 | LocInfo = CCValAssign::AExt; |
| 2017 | } |
| 2018 | |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2019 | unsigned Reg; |
| 2020 | |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 2021 | // f32 and f64 are allocated in A0, A1, A2, A3 when either of the following |
| 2022 | // is true: function is vararg, argument is 3rd or higher, there is previous |
| 2023 | // argument which is not f32 or f64. |
| 2024 | bool AllocateFloatsInIntReg = State.isVarArg() || ValNo > 1 |
| 2025 | || State.getFirstUnallocated(F32Regs, FloatRegsSize) != ValNo; |
Akira Hatanaka | a1a7ba8 | 2011-05-19 20:29:48 +0000 | [diff] [blame] | 2026 | unsigned OrigAlign = ArgFlags.getOrigAlign(); |
| 2027 | bool isI64 = (ValVT == MVT::i32 && OrigAlign == 8); |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 2028 | |
| 2029 | if (ValVT == MVT::i32 || (ValVT == MVT::f32 && AllocateFloatsInIntReg)) { |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2030 | Reg = State.AllocateReg(IntRegs, IntRegsSize); |
Akira Hatanaka | a1a7ba8 | 2011-05-19 20:29:48 +0000 | [diff] [blame] | 2031 | // If this is the first part of an i64 arg, |
| 2032 | // the allocated register must be either A0 or A2. |
| 2033 | if (isI64 && (Reg == Mips::A1 || Reg == Mips::A3)) |
| 2034 | Reg = State.AllocateReg(IntRegs, IntRegsSize); |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2035 | LocVT = MVT::i32; |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 2036 | } else if (ValVT == MVT::f64 && AllocateFloatsInIntReg) { |
| 2037 | // Allocate int register and shadow next int register. If first |
| 2038 | // available register is Mips::A1 or Mips::A3, shadow it too. |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2039 | Reg = State.AllocateReg(IntRegs, IntRegsSize); |
| 2040 | if (Reg == Mips::A1 || Reg == Mips::A3) |
| 2041 | Reg = State.AllocateReg(IntRegs, IntRegsSize); |
| 2042 | State.AllocateReg(IntRegs, IntRegsSize); |
| 2043 | LocVT = MVT::i32; |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 2044 | } else if (ValVT.isFloatingPoint() && !AllocateFloatsInIntReg) { |
| 2045 | // we are guaranteed to find an available float register |
| 2046 | if (ValVT == MVT::f32) { |
| 2047 | Reg = State.AllocateReg(F32Regs, FloatRegsSize); |
| 2048 | // Shadow int register |
| 2049 | State.AllocateReg(IntRegs, IntRegsSize); |
| 2050 | } else { |
| 2051 | Reg = State.AllocateReg(F64Regs, FloatRegsSize); |
| 2052 | // Shadow int registers |
| 2053 | unsigned Reg2 = State.AllocateReg(IntRegs, IntRegsSize); |
| 2054 | if (Reg2 == Mips::A1 || Reg2 == Mips::A3) |
| 2055 | State.AllocateReg(IntRegs, IntRegsSize); |
| 2056 | State.AllocateReg(IntRegs, IntRegsSize); |
| 2057 | } |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2058 | } else |
| 2059 | llvm_unreachable("Cannot handle this ValVT."); |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2060 | |
Akira Hatanaka | d37776d | 2011-05-20 21:39:54 +0000 | [diff] [blame] | 2061 | unsigned SizeInBytes = ValVT.getSizeInBits() >> 3; |
| 2062 | unsigned Offset = State.AllocateStack(SizeInBytes, OrigAlign); |
| 2063 | |
| 2064 | if (!Reg) |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2065 | State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo)); |
Akira Hatanaka | d37776d | 2011-05-20 21:39:54 +0000 | [diff] [blame] | 2066 | else |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2067 | State.addLoc(CCValAssign::getReg(ValNo, ValVT, Reg, LocVT, LocInfo)); |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2068 | |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 2069 | return false; // CC must always match |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2070 | } |
| 2071 | |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2072 | static const uint16_t Mips64IntRegs[8] = |
Akira Hatanaka | 2c5d652 | 2011-11-12 02:20:46 +0000 | [diff] [blame] | 2073 | {Mips::A0_64, Mips::A1_64, Mips::A2_64, Mips::A3_64, |
| 2074 | Mips::T0_64, Mips::T1_64, Mips::T2_64, Mips::T3_64}; |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2075 | static const uint16_t Mips64DPRegs[8] = |
Akira Hatanaka | 2c5d652 | 2011-11-12 02:20:46 +0000 | [diff] [blame] | 2076 | {Mips::D12_64, Mips::D13_64, Mips::D14_64, Mips::D15_64, |
| 2077 | Mips::D16_64, Mips::D17_64, Mips::D18_64, Mips::D19_64}; |
| 2078 | |
| 2079 | static bool CC_Mips64Byval(unsigned ValNo, MVT ValVT, MVT LocVT, |
| 2080 | CCValAssign::LocInfo LocInfo, |
| 2081 | ISD::ArgFlagsTy ArgFlags, CCState &State) { |
| 2082 | unsigned Align = std::max(ArgFlags.getByValAlign(), (unsigned)8); |
| 2083 | unsigned Size = (ArgFlags.getByValSize() + 7) / 8 * 8; |
| 2084 | unsigned FirstIdx = State.getFirstUnallocated(Mips64IntRegs, 8); |
| 2085 | |
| 2086 | assert(Align <= 16 && "Cannot handle alignments larger than 16."); |
| 2087 | |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2088 | // 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] | 2089 | if ((Align == 16) && (FirstIdx % 2)) { |
| 2090 | State.AllocateReg(Mips64IntRegs[FirstIdx], Mips64DPRegs[FirstIdx]); |
| 2091 | ++FirstIdx; |
| 2092 | } |
| 2093 | |
| 2094 | // Mark the registers allocated. |
| 2095 | for (unsigned I = FirstIdx; Size && (I < 8); Size -= 8, ++I) |
| 2096 | State.AllocateReg(Mips64IntRegs[I], Mips64DPRegs[I]); |
| 2097 | |
| 2098 | // Allocate space on caller's stack. |
| 2099 | unsigned Offset = State.AllocateStack(Size, Align); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2100 | |
Akira Hatanaka | 2c5d652 | 2011-11-12 02:20:46 +0000 | [diff] [blame] | 2101 | if (FirstIdx < 8) |
| 2102 | State.addLoc(CCValAssign::getReg(ValNo, ValVT, Mips64IntRegs[FirstIdx], |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2103 | LocVT, LocInfo)); |
Akira Hatanaka | 2c5d652 | 2011-11-12 02:20:46 +0000 | [diff] [blame] | 2104 | else |
| 2105 | State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo)); |
| 2106 | |
| 2107 | return true; |
| 2108 | } |
| 2109 | |
| 2110 | #include "MipsGenCallingConv.inc" |
| 2111 | |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 2112 | static void |
Akira Hatanaka | 08067b2 | 2012-01-24 22:07:36 +0000 | [diff] [blame] | 2113 | AnalyzeMips64CallOperands(CCState &CCInfo, |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 2114 | const SmallVectorImpl<ISD::OutputArg> &Outs) { |
| 2115 | unsigned NumOps = Outs.size(); |
| 2116 | for (unsigned i = 0; i != NumOps; ++i) { |
| 2117 | MVT ArgVT = Outs[i].VT; |
| 2118 | ISD::ArgFlagsTy ArgFlags = Outs[i].Flags; |
| 2119 | bool R; |
| 2120 | |
| 2121 | if (Outs[i].IsFixed) |
| 2122 | R = CC_MipsN(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, CCInfo); |
| 2123 | else |
| 2124 | R = CC_MipsN_VarArg(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, CCInfo); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2125 | |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 2126 | if (R) { |
Benjamin Kramer | 6296ee3 | 2011-11-14 19:51:48 +0000 | [diff] [blame] | 2127 | #ifndef NDEBUG |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 2128 | dbgs() << "Call operand #" << i << " has unhandled type " |
| 2129 | << EVT(ArgVT).getEVTString(); |
| 2130 | #endif |
| 2131 | llvm_unreachable(0); |
| 2132 | } |
| 2133 | } |
| 2134 | } |
| 2135 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2136 | //===----------------------------------------------------------------------===// |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2137 | // Call Calling Convention Implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2138 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2139 | |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2140 | static const unsigned O32IntRegsSize = 4; |
| 2141 | |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2142 | static const uint16_t O32IntRegs[] = { |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2143 | Mips::A0, Mips::A1, Mips::A2, Mips::A3 |
| 2144 | }; |
| 2145 | |
Akira Hatanaka | 373e3a4 | 2011-09-23 00:58:33 +0000 | [diff] [blame] | 2146 | // Return next O32 integer argument register. |
| 2147 | static unsigned getNextIntArgReg(unsigned Reg) { |
| 2148 | assert((Reg == Mips::A0) || (Reg == Mips::A2)); |
| 2149 | return (Reg == Mips::A0) ? Mips::A1 : Mips::A3; |
| 2150 | } |
| 2151 | |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2152 | // Write ByVal Arg to arg registers and stack. |
| 2153 | static void |
Akira Hatanaka | da7f5f1 | 2011-09-19 20:26:02 +0000 | [diff] [blame] | 2154 | WriteByValArg(SDValue& ByValChain, SDValue Chain, DebugLoc dl, |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2155 | SmallVector<std::pair<unsigned, SDValue>, 16>& RegsToPass, |
| 2156 | SmallVector<SDValue, 8>& MemOpChains, int& LastFI, |
| 2157 | MachineFrameInfo *MFI, SelectionDAG &DAG, SDValue Arg, |
Akira Hatanaka | edacba8 | 2011-05-25 17:32:06 +0000 | [diff] [blame] | 2158 | const CCValAssign &VA, const ISD::ArgFlagsTy& Flags, |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2159 | MVT PtrType, bool isLittle) { |
| 2160 | unsigned LocMemOffset = VA.getLocMemOffset(); |
| 2161 | unsigned Offset = 0; |
| 2162 | uint32_t RemainingSize = Flags.getByValSize(); |
Akira Hatanaka | 5c21c9e | 2011-08-12 21:30:06 +0000 | [diff] [blame] | 2163 | unsigned ByValAlign = Flags.getByValAlign(); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2164 | |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2165 | // Copy the first 4 words of byval arg to registers A0 - A3. |
| 2166 | // FIXME: Use a stricter alignment if it enables better optimization in passes |
| 2167 | // run later. |
| 2168 | for (; RemainingSize >= 4 && LocMemOffset < 4 * 4; |
| 2169 | Offset += 4, RemainingSize -= 4, LocMemOffset += 4) { |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2170 | SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg, |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2171 | DAG.getConstant(Offset, MVT::i32)); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2172 | SDValue LoadVal = DAG.getLoad(MVT::i32, dl, Chain, LoadPtr, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2173 | MachinePointerInfo(), false, false, false, |
| 2174 | std::min(ByValAlign, (unsigned )4)); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2175 | MemOpChains.push_back(LoadVal.getValue(1)); |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2176 | unsigned DstReg = O32IntRegs[LocMemOffset / 4]; |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2177 | RegsToPass.push_back(std::make_pair(DstReg, LoadVal)); |
| 2178 | } |
| 2179 | |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2180 | if (RemainingSize == 0) |
| 2181 | return; |
| 2182 | |
| 2183 | // If there still is a register available for argument passing, write the |
| 2184 | // remaining part of the structure to it using subword loads and shifts. |
| 2185 | if (LocMemOffset < 4 * 4) { |
| 2186 | assert(RemainingSize <= 3 && RemainingSize >= 1 && |
| 2187 | "There must be one to three bytes remaining."); |
| 2188 | unsigned LoadSize = (RemainingSize == 3 ? 2 : RemainingSize); |
| 2189 | SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg, |
| 2190 | DAG.getConstant(Offset, MVT::i32)); |
| 2191 | unsigned Alignment = std::min(ByValAlign, (unsigned )4); |
| 2192 | SDValue LoadVal = DAG.getExtLoad(ISD::ZEXTLOAD, dl, MVT::i32, Chain, |
| 2193 | LoadPtr, MachinePointerInfo(), |
| 2194 | MVT::getIntegerVT(LoadSize * 8), false, |
| 2195 | false, Alignment); |
| 2196 | MemOpChains.push_back(LoadVal.getValue(1)); |
| 2197 | |
| 2198 | // If target is big endian, shift it to the most significant half-word or |
| 2199 | // byte. |
| 2200 | if (!isLittle) |
| 2201 | LoadVal = DAG.getNode(ISD::SHL, dl, MVT::i32, LoadVal, |
| 2202 | DAG.getConstant(32 - LoadSize * 8, MVT::i32)); |
| 2203 | |
| 2204 | Offset += LoadSize; |
| 2205 | RemainingSize -= LoadSize; |
| 2206 | |
| 2207 | // Read second subword if necessary. |
| 2208 | if (RemainingSize != 0) { |
| 2209 | assert(RemainingSize == 1 && "There must be one byte remaining."); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2210 | LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg, |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2211 | DAG.getConstant(Offset, MVT::i32)); |
| 2212 | unsigned Alignment = std::min(ByValAlign, (unsigned )2); |
| 2213 | SDValue Subword = DAG.getExtLoad(ISD::ZEXTLOAD, dl, MVT::i32, Chain, |
| 2214 | LoadPtr, MachinePointerInfo(), |
| 2215 | MVT::i8, false, false, Alignment); |
| 2216 | MemOpChains.push_back(Subword.getValue(1)); |
| 2217 | // Insert the loaded byte to LoadVal. |
| 2218 | // FIXME: Use INS if supported by target. |
| 2219 | unsigned ShiftAmt = isLittle ? 16 : 8; |
| 2220 | SDValue Shift = DAG.getNode(ISD::SHL, dl, MVT::i32, Subword, |
| 2221 | DAG.getConstant(ShiftAmt, MVT::i32)); |
| 2222 | LoadVal = DAG.getNode(ISD::OR, dl, MVT::i32, LoadVal, Shift); |
| 2223 | } |
| 2224 | |
| 2225 | unsigned DstReg = O32IntRegs[LocMemOffset / 4]; |
| 2226 | RegsToPass.push_back(std::make_pair(DstReg, LoadVal)); |
| 2227 | return; |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2228 | } |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2229 | |
| 2230 | // Create a fixed object on stack at offset LocMemOffset and copy |
| 2231 | // remaining part of byval arg to it using memcpy. |
| 2232 | SDValue Src = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg, |
| 2233 | DAG.getConstant(Offset, MVT::i32)); |
| 2234 | LastFI = MFI->CreateFixedObject(RemainingSize, LocMemOffset, true); |
| 2235 | SDValue Dst = DAG.getFrameIndex(LastFI, PtrType); |
Akira Hatanaka | da7f5f1 | 2011-09-19 20:26:02 +0000 | [diff] [blame] | 2236 | ByValChain = DAG.getMemcpy(ByValChain, dl, Dst, Src, |
| 2237 | DAG.getConstant(RemainingSize, MVT::i32), |
| 2238 | std::min(ByValAlign, (unsigned)4), |
| 2239 | /*isVolatile=*/false, /*AlwaysInline=*/false, |
| 2240 | MachinePointerInfo(0), MachinePointerInfo(0)); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2241 | } |
| 2242 | |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2243 | // Copy Mips64 byVal arg to registers and stack. |
| 2244 | void static |
| 2245 | PassByValArg64(SDValue& ByValChain, SDValue Chain, DebugLoc dl, |
| 2246 | SmallVector<std::pair<unsigned, SDValue>, 16>& RegsToPass, |
| 2247 | SmallVector<SDValue, 8>& MemOpChains, int& LastFI, |
| 2248 | MachineFrameInfo *MFI, SelectionDAG &DAG, SDValue Arg, |
| 2249 | const CCValAssign &VA, const ISD::ArgFlagsTy& Flags, |
| 2250 | EVT PtrTy, bool isLittle) { |
| 2251 | unsigned ByValSize = Flags.getByValSize(); |
| 2252 | unsigned Alignment = std::min(Flags.getByValAlign(), (unsigned)8); |
| 2253 | bool IsRegLoc = VA.isRegLoc(); |
| 2254 | unsigned Offset = 0; // Offset in # of bytes from the beginning of struct. |
| 2255 | unsigned LocMemOffset = 0; |
Akira Hatanaka | 1604085 | 2011-11-15 18:42:25 +0000 | [diff] [blame] | 2256 | unsigned MemCpySize = ByValSize; |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2257 | |
| 2258 | if (!IsRegLoc) |
| 2259 | LocMemOffset = VA.getLocMemOffset(); |
| 2260 | else { |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2261 | const uint16_t *Reg = std::find(Mips64IntRegs, Mips64IntRegs + 8, |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2262 | VA.getLocReg()); |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2263 | const uint16_t *RegEnd = Mips64IntRegs + 8; |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2264 | |
| 2265 | // Copy double words to registers. |
| 2266 | for (; (Reg != RegEnd) && (ByValSize >= Offset + 8); ++Reg, Offset += 8) { |
| 2267 | SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, PtrTy, Arg, |
| 2268 | DAG.getConstant(Offset, PtrTy)); |
| 2269 | SDValue LoadVal = DAG.getLoad(MVT::i64, dl, Chain, LoadPtr, |
| 2270 | MachinePointerInfo(), false, false, false, |
| 2271 | Alignment); |
| 2272 | MemOpChains.push_back(LoadVal.getValue(1)); |
| 2273 | RegsToPass.push_back(std::make_pair(*Reg, LoadVal)); |
| 2274 | } |
| 2275 | |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2276 | // Return if the struct has been fully copied. |
Akira Hatanaka | 1604085 | 2011-11-15 18:42:25 +0000 | [diff] [blame] | 2277 | if (!(MemCpySize = ByValSize - Offset)) |
| 2278 | return; |
| 2279 | |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2280 | // If there is an argument register available, copy the remainder of the |
| 2281 | // byval argument with sub-doubleword loads and shifts. |
Akira Hatanaka | 1604085 | 2011-11-15 18:42:25 +0000 | [diff] [blame] | 2282 | if (Reg != RegEnd) { |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2283 | assert((ByValSize < Offset + 8) && |
| 2284 | "Size of the remainder should be smaller than 8-byte."); |
| 2285 | SDValue Val; |
| 2286 | for (unsigned LoadSize = 4; Offset < ByValSize; LoadSize /= 2) { |
| 2287 | unsigned RemSize = ByValSize - Offset; |
| 2288 | |
| 2289 | if (RemSize < LoadSize) |
| 2290 | continue; |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2291 | |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2292 | SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, PtrTy, Arg, |
| 2293 | DAG.getConstant(Offset, PtrTy)); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2294 | SDValue LoadVal = |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2295 | DAG.getExtLoad(ISD::ZEXTLOAD, dl, MVT::i64, Chain, LoadPtr, |
| 2296 | MachinePointerInfo(), MVT::getIntegerVT(LoadSize * 8), |
| 2297 | false, false, Alignment); |
| 2298 | MemOpChains.push_back(LoadVal.getValue(1)); |
| 2299 | |
| 2300 | // Offset in number of bits from double word boundary. |
| 2301 | unsigned OffsetDW = (Offset % 8) * 8; |
| 2302 | unsigned Shamt = isLittle ? OffsetDW : 64 - (OffsetDW + LoadSize * 8); |
| 2303 | SDValue Shift = DAG.getNode(ISD::SHL, dl, MVT::i64, LoadVal, |
| 2304 | DAG.getConstant(Shamt, MVT::i32)); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2305 | |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2306 | Val = Val.getNode() ? DAG.getNode(ISD::OR, dl, MVT::i64, Val, Shift) : |
| 2307 | Shift; |
| 2308 | Offset += LoadSize; |
| 2309 | Alignment = std::min(Alignment, LoadSize); |
| 2310 | } |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2311 | |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2312 | RegsToPass.push_back(std::make_pair(*Reg, Val)); |
| 2313 | return; |
| 2314 | } |
| 2315 | } |
| 2316 | |
Akira Hatanaka | 1604085 | 2011-11-15 18:42:25 +0000 | [diff] [blame] | 2317 | assert(MemCpySize && "MemCpySize must not be zero."); |
| 2318 | |
| 2319 | // Create a fixed object on stack at offset LocMemOffset and copy |
| 2320 | // remainder of byval arg to it with memcpy. |
| 2321 | SDValue Src = DAG.getNode(ISD::ADD, dl, PtrTy, Arg, |
| 2322 | DAG.getConstant(Offset, PtrTy)); |
| 2323 | LastFI = MFI->CreateFixedObject(MemCpySize, LocMemOffset, true); |
| 2324 | SDValue Dst = DAG.getFrameIndex(LastFI, PtrTy); |
| 2325 | ByValChain = DAG.getMemcpy(ByValChain, dl, Dst, Src, |
| 2326 | DAG.getConstant(MemCpySize, PtrTy), Alignment, |
| 2327 | /*isVolatile=*/false, /*AlwaysInline=*/false, |
| 2328 | MachinePointerInfo(0), MachinePointerInfo(0)); |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2329 | } |
| 2330 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2331 | /// LowerCall - functions arguments are copied from virtual regs to |
Nate Begeman | 5bf4b75 | 2009-01-26 03:15:54 +0000 | [diff] [blame] | 2332 | /// (physical regs)/(stack frame), CALLSEQ_START and CALLSEQ_END are emitted. |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2333 | /// TODO: isTailCall. |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2334 | SDValue |
Akira Hatanaka | da7f5f1 | 2011-09-19 20:26:02 +0000 | [diff] [blame] | 2335 | MipsTargetLowering::LowerCall(SDValue InChain, SDValue Callee, |
Sandeep Patel | 65c3c8f | 2009-09-02 08:44:58 +0000 | [diff] [blame] | 2336 | CallingConv::ID CallConv, bool isVarArg, |
Evan Cheng | 4bfcd4a | 2012-02-28 18:51:51 +0000 | [diff] [blame] | 2337 | bool doesNotRet, bool &isTailCall, |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2338 | const SmallVectorImpl<ISD::OutputArg> &Outs, |
Dan Gohman | c940365 | 2010-07-07 15:54:55 +0000 | [diff] [blame] | 2339 | const SmallVectorImpl<SDValue> &OutVals, |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2340 | const SmallVectorImpl<ISD::InputArg> &Ins, |
| 2341 | DebugLoc dl, SelectionDAG &DAG, |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 2342 | SmallVectorImpl<SDValue> &InVals) const { |
Evan Cheng | 0c439eb | 2010-01-27 00:07:07 +0000 | [diff] [blame] | 2343 | // MIPs target does not yet support tail call optimization. |
| 2344 | isTailCall = false; |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2345 | |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2346 | MachineFunction &MF = DAG.getMachineFunction(); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2347 | MachineFrameInfo *MFI = MF.getFrameInfo(); |
Akira Hatanaka | d37776d | 2011-05-20 21:39:54 +0000 | [diff] [blame] | 2348 | const TargetFrameLowering *TFL = MF.getTarget().getFrameLowering(); |
Bruno Cardoso Lopes | c517cb0 | 2009-09-01 17:27:58 +0000 | [diff] [blame] | 2349 | bool IsPIC = getTargetMachine().getRelocationModel() == Reloc::PIC_; |
Akira Hatanaka | 17a1e87 | 2011-05-20 18:39:33 +0000 | [diff] [blame] | 2350 | MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>(); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2351 | |
| 2352 | // Analyze operands of the call, assigning locations to each operand. |
| 2353 | SmallVector<CCValAssign, 16> ArgLocs; |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 2354 | CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2355 | getTargetMachine(), ArgLocs, *DAG.getContext()); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2356 | |
Akira Hatanaka | 2ec69fa | 2011-10-28 18:47:24 +0000 | [diff] [blame] | 2357 | if (IsO32) |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 2358 | CCInfo.AnalyzeCallOperands(Outs, CC_MipsO32); |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 2359 | else if (HasMips64) |
| 2360 | AnalyzeMips64CallOperands(CCInfo, Outs); |
Akira Hatanaka | bdd2ce9 | 2011-05-23 21:13:59 +0000 | [diff] [blame] | 2361 | else |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2362 | CCInfo.AnalyzeCallOperands(Outs, CC_Mips); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2363 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2364 | // 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] | 2365 | unsigned NextStackOffset = CCInfo.getNextStackOffset(); |
| 2366 | |
Akira Hatanaka | da7f5f1 | 2011-09-19 20:26:02 +0000 | [diff] [blame] | 2367 | // Chain is the output chain of the last Load/Store or CopyToReg node. |
| 2368 | // ByValChain is the output chain of the last Memcpy node created for copying |
| 2369 | // byval arguments to the stack. |
| 2370 | SDValue Chain, CallSeqStart, ByValChain; |
| 2371 | SDValue NextStackOffsetVal = DAG.getIntPtrConstant(NextStackOffset, true); |
| 2372 | Chain = CallSeqStart = DAG.getCALLSEQ_START(InChain, NextStackOffsetVal); |
| 2373 | ByValChain = InChain; |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2374 | |
| 2375 | // If this is the first call, create a stack frame object that points to |
| 2376 | // a location to which .cprestore saves $gp. |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 2377 | if (IsO32 && IsPIC && MipsFI->globalBaseRegFixed() && !MipsFI->getGPFI()) |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2378 | MipsFI->setGPFI(MFI->CreateFixedObject(4, 0, true)); |
| 2379 | |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 2380 | // Get the frame index of the stack frame object that points to the location |
| 2381 | // of dynamically allocated area on the stack. |
| 2382 | int DynAllocFI = MipsFI->getDynAllocFI(); |
| 2383 | |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2384 | // Update size of the maximum argument space. |
| 2385 | // For O32, a minimum of four words (16 bytes) of argument space is |
| 2386 | // allocated. |
Akira Hatanaka | 2ec69fa | 2011-10-28 18:47:24 +0000 | [diff] [blame] | 2387 | if (IsO32) |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2388 | NextStackOffset = std::max(NextStackOffset, (unsigned)16); |
| 2389 | |
| 2390 | unsigned MaxCallFrameSize = MipsFI->getMaxCallFrameSize(); |
| 2391 | |
| 2392 | if (MaxCallFrameSize < NextStackOffset) { |
| 2393 | MipsFI->setMaxCallFrameSize(NextStackOffset); |
| 2394 | |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 2395 | // Set the offsets relative to $sp of the $gp restore slot and dynamically |
| 2396 | // allocated stack space. These offsets must be aligned to a boundary |
| 2397 | // determined by the stack alignment of the ABI. |
| 2398 | unsigned StackAlignment = TFL->getStackAlignment(); |
| 2399 | NextStackOffset = (NextStackOffset + StackAlignment - 1) / |
| 2400 | StackAlignment * StackAlignment; |
| 2401 | |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2402 | if (MipsFI->needGPSaveRestore()) |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 2403 | MFI->setObjectOffset(MipsFI->getGPFI(), NextStackOffset); |
| 2404 | |
| 2405 | MFI->setObjectOffset(DynAllocFI, NextStackOffset); |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2406 | } |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2407 | |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2408 | // With EABI is it possible to have 16 args on registers. |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 2409 | SmallVector<std::pair<unsigned, SDValue>, 16> RegsToPass; |
| 2410 | SmallVector<SDValue, 8> MemOpChains; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2411 | |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 2412 | int FirstFI = -MFI->getNumFixedObjects() - 1, LastFI = 0; |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 2413 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2414 | // Walk the register/memloc assignments, inserting copies/loads. |
| 2415 | for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) { |
Dan Gohman | c940365 | 2010-07-07 15:54:55 +0000 | [diff] [blame] | 2416 | SDValue Arg = OutVals[i]; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2417 | CCValAssign &VA = ArgLocs[i]; |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2418 | MVT ValVT = VA.getValVT(), LocVT = VA.getLocVT(); |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2419 | ISD::ArgFlagsTy Flags = Outs[i].Flags; |
| 2420 | |
| 2421 | // ByVal Arg. |
| 2422 | if (Flags.isByVal()) { |
| 2423 | assert(Flags.getByValSize() && |
| 2424 | "ByVal args of size 0 should have been ignored by front-end."); |
| 2425 | if (IsO32) |
| 2426 | WriteByValArg(ByValChain, Chain, dl, RegsToPass, MemOpChains, LastFI, |
| 2427 | MFI, DAG, Arg, VA, Flags, getPointerTy(), |
| 2428 | Subtarget->isLittle()); |
| 2429 | else |
| 2430 | PassByValArg64(ByValChain, Chain, dl, RegsToPass, MemOpChains, LastFI, |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2431 | MFI, DAG, Arg, VA, Flags, getPointerTy(), |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2432 | Subtarget->isLittle()); |
| 2433 | continue; |
| 2434 | } |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2435 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2436 | // Promote the value if needed. |
| 2437 | switch (VA.getLocInfo()) { |
Torok Edwin | c23197a | 2009-07-14 16:55:14 +0000 | [diff] [blame] | 2438 | default: llvm_unreachable("Unknown loc info!"); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2439 | case CCValAssign::Full: |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2440 | if (VA.isRegLoc()) { |
| 2441 | if ((ValVT == MVT::f32 && LocVT == MVT::i32) || |
| 2442 | (ValVT == MVT::f64 && LocVT == MVT::i64)) |
| 2443 | Arg = DAG.getNode(ISD::BITCAST, dl, LocVT, Arg); |
| 2444 | else if (ValVT == MVT::f64 && LocVT == MVT::i32) { |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2445 | SDValue Lo = DAG.getNode(MipsISD::ExtractElementF64, dl, MVT::i32, |
| 2446 | Arg, DAG.getConstant(0, MVT::i32)); |
Akira Hatanaka | 0bf3dfb | 2011-04-15 21:00:26 +0000 | [diff] [blame] | 2447 | SDValue Hi = DAG.getNode(MipsISD::ExtractElementF64, dl, MVT::i32, |
| 2448 | Arg, DAG.getConstant(1, MVT::i32)); |
Akira Hatanaka | 99a2e98 | 2011-04-15 19:52:08 +0000 | [diff] [blame] | 2449 | if (!Subtarget->isLittle()) |
| 2450 | std::swap(Lo, Hi); |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2451 | unsigned LocRegLo = VA.getLocReg(); |
Akira Hatanaka | 373e3a4 | 2011-09-23 00:58:33 +0000 | [diff] [blame] | 2452 | unsigned LocRegHigh = getNextIntArgReg(LocRegLo); |
| 2453 | RegsToPass.push_back(std::make_pair(LocRegLo, Lo)); |
| 2454 | RegsToPass.push_back(std::make_pair(LocRegHigh, Hi)); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2455 | continue; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2456 | } |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2457 | } |
| 2458 | break; |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2459 | case CCValAssign::SExt: |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2460 | Arg = DAG.getNode(ISD::SIGN_EXTEND, dl, LocVT, Arg); |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2461 | break; |
| 2462 | case CCValAssign::ZExt: |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2463 | Arg = DAG.getNode(ISD::ZERO_EXTEND, dl, LocVT, Arg); |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2464 | break; |
| 2465 | case CCValAssign::AExt: |
Akira Hatanaka | 38bdc57 | 2012-02-17 02:20:26 +0000 | [diff] [blame] | 2466 | Arg = DAG.getNode(ISD::ANY_EXTEND, dl, LocVT, Arg); |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2467 | break; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2468 | } |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2469 | |
| 2470 | // Arguments that can be passed on register must be kept at |
Bruno Cardoso Lopes | c7db561 | 2007-11-05 03:02:32 +0000 | [diff] [blame] | 2471 | // RegsToPass vector |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2472 | if (VA.isRegLoc()) { |
| 2473 | RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg)); |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2474 | continue; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2475 | } |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2476 | |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2477 | // Register can't get to this point... |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2478 | assert(VA.isMemLoc()); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2479 | |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2480 | // Create the frame index object for this incoming parameter |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2481 | LastFI = MFI->CreateFixedObject(ValVT.getSizeInBits()/8, |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 2482 | VA.getLocMemOffset(), true); |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 2483 | SDValue PtrOff = DAG.getFrameIndex(LastFI, getPointerTy()); |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2484 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2485 | // emit ISD::STORE whichs stores the |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2486 | // parameter value to a stack Location |
Chris Lattner | 8026a9d | 2010-09-21 17:50:43 +0000 | [diff] [blame] | 2487 | MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2488 | MachinePointerInfo(), false, false, 0)); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2489 | } |
| 2490 | |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2491 | // Extend range of indices of frame objects for outgoing arguments that were |
| 2492 | // created during this function call. Skip this step if no such objects were |
| 2493 | // created. |
| 2494 | if (LastFI) |
| 2495 | MipsFI->extendOutArgFIRange(FirstFI, LastFI); |
| 2496 | |
Akira Hatanaka | da7f5f1 | 2011-09-19 20:26:02 +0000 | [diff] [blame] | 2497 | // If a memcpy has been created to copy a byval arg to a stack, replace the |
| 2498 | // chain input of CallSeqStart with ByValChain. |
| 2499 | if (InChain != ByValChain) |
| 2500 | DAG.UpdateNodeOperands(CallSeqStart.getNode(), ByValChain, |
| 2501 | NextStackOffsetVal); |
| 2502 | |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2503 | // Transform all store nodes into one single node because all store |
| 2504 | // nodes are independent of each other. |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2505 | if (!MemOpChains.empty()) |
| 2506 | Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2507 | &MemOpChains[0], MemOpChains.size()); |
| 2508 | |
Bill Wendling | 056292f | 2008-09-16 21:48:12 +0000 | [diff] [blame] | 2509 | // If the callee is a GlobalAddress/ExternalSymbol node (quite common, every |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2510 | // direct call is) turn it into a TargetGlobalAddress/TargetExternalSymbol |
| 2511 | // node so that legalize doesn't hack it. |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2512 | unsigned char OpFlag; |
| 2513 | bool IsPICCall = (IsN64 || IsPIC); // true if calls are translated to jalr $25 |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 2514 | bool GlobalOrExternal = false; |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 2515 | SDValue CalleeLo; |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2516 | |
| 2517 | if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) { |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2518 | if (IsPICCall && G->getGlobal()->hasInternalLinkage()) { |
| 2519 | OpFlag = IsO32 ? MipsII::MO_GOT : MipsII::MO_GOT_PAGE; |
| 2520 | unsigned char LoFlag = IsO32 ? MipsII::MO_ABS_LO : MipsII::MO_GOT_OFST; |
| 2521 | Callee = DAG.getTargetGlobalAddress(G->getGlobal(), dl, getPointerTy(), 0, |
| 2522 | OpFlag); |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 2523 | CalleeLo = DAG.getTargetGlobalAddress(G->getGlobal(), dl, getPointerTy(), |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2524 | 0, LoFlag); |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 2525 | } else { |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2526 | OpFlag = IsPICCall ? MipsII::MO_GOT_CALL : MipsII::MO_NO_FLAG; |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 2527 | Callee = DAG.getTargetGlobalAddress(G->getGlobal(), dl, |
| 2528 | getPointerTy(), 0, OpFlag); |
| 2529 | } |
| 2530 | |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 2531 | GlobalOrExternal = true; |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2532 | } |
| 2533 | else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) { |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2534 | if (IsN64 || (!IsO32 && IsPIC)) |
| 2535 | OpFlag = MipsII::MO_GOT_DISP; |
| 2536 | else if (!IsPIC) // !N64 && static |
| 2537 | OpFlag = MipsII::MO_NO_FLAG; |
| 2538 | else // O32 & PIC |
| 2539 | OpFlag = MipsII::MO_GOT_CALL; |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2540 | Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy(), |
| 2541 | OpFlag); |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 2542 | GlobalOrExternal = true; |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2543 | } |
| 2544 | |
Akira Hatanaka | cd0f90f | 2011-05-20 02:30:51 +0000 | [diff] [blame] | 2545 | SDValue InFlag; |
| 2546 | |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2547 | // Create nodes that load address of callee and copy it to T9 |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2548 | if (IsPICCall) { |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 2549 | if (GlobalOrExternal) { |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 2550 | // Load callee address |
Akira Hatanaka | 648f00c | 2012-02-24 22:34:47 +0000 | [diff] [blame] | 2551 | Callee = DAG.getNode(MipsISD::Wrapper, dl, getPointerTy(), |
| 2552 | GetGlobalReg(DAG, getPointerTy()), Callee); |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2553 | SDValue LoadValue = DAG.getLoad(getPointerTy(), dl, DAG.getEntryNode(), |
| 2554 | Callee, MachinePointerInfo::getGOT(), |
Pete Cooper | d752e0f | 2011-11-08 18:42:53 +0000 | [diff] [blame] | 2555 | false, false, false, 0); |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 2556 | |
| 2557 | // Use GOT+LO if callee has internal linkage. |
| 2558 | if (CalleeLo.getNode()) { |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2559 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, getPointerTy(), CalleeLo); |
| 2560 | Callee = DAG.getNode(ISD::ADD, dl, getPointerTy(), LoadValue, Lo); |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 2561 | } else |
| 2562 | Callee = LoadValue; |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2563 | } |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 2564 | } |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2565 | |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2566 | // T9 should contain the address of the callee function if |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 2567 | // -reloction-model=pic or it is an indirect call. |
| 2568 | if (IsPICCall || !GlobalOrExternal) { |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2569 | // copy to T9 |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2570 | unsigned T9Reg = IsN64 ? Mips::T9_64 : Mips::T9; |
| 2571 | Chain = DAG.getCopyToReg(Chain, dl, T9Reg, Callee, SDValue(0, 0)); |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2572 | InFlag = Chain.getValue(1); |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2573 | Callee = DAG.getRegister(T9Reg, getPointerTy()); |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2574 | } |
Bill Wendling | 056292f | 2008-09-16 21:48:12 +0000 | [diff] [blame] | 2575 | |
Akira Hatanaka | cd0f90f | 2011-05-20 02:30:51 +0000 | [diff] [blame] | 2576 | // Build a sequence of copy-to-reg nodes chained together with token |
| 2577 | // chain and flag operands which copy the outgoing args into registers. |
| 2578 | // The InFlag in necessary since all emitted instructions must be |
| 2579 | // stuck together. |
| 2580 | for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) { |
| 2581 | Chain = DAG.getCopyToReg(Chain, dl, RegsToPass[i].first, |
| 2582 | RegsToPass[i].second, InFlag); |
| 2583 | InFlag = Chain.getValue(1); |
| 2584 | } |
| 2585 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2586 | // MipsJmpLink = #chain, #target_address, #opt_in_flags... |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2587 | // = Chain, Callee, Reg#1, Reg#2, ... |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2588 | // |
| 2589 | // Returns a chain & a flag for retval copy to use. |
Chris Lattner | f1b4eaf | 2010-12-21 02:38:05 +0000 | [diff] [blame] | 2590 | SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue); |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 2591 | SmallVector<SDValue, 8> Ops; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2592 | Ops.push_back(Chain); |
| 2593 | Ops.push_back(Callee); |
| 2594 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2595 | // 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] | 2596 | // known live into the call. |
| 2597 | for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) |
| 2598 | Ops.push_back(DAG.getRegister(RegsToPass[i].first, |
| 2599 | RegsToPass[i].second.getValueType())); |
| 2600 | |
Akira Hatanaka | b2930b9 | 2012-03-01 22:27:29 +0000 | [diff] [blame] | 2601 | // Add a register mask operand representing the call-preserved registers. |
| 2602 | const TargetRegisterInfo *TRI = getTargetMachine().getRegisterInfo(); |
| 2603 | const uint32_t *Mask = TRI->getCallPreservedMask(CallConv); |
| 2604 | assert(Mask && "Missing call preserved mask for calling convention"); |
| 2605 | Ops.push_back(DAG.getRegisterMask(Mask)); |
| 2606 | |
Gabor Greif | ba36cb5 | 2008-08-28 21:40:38 +0000 | [diff] [blame] | 2607 | if (InFlag.getNode()) |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2608 | Ops.push_back(InFlag); |
| 2609 | |
Dale Johannesen | 33c960f | 2009-02-04 20:06:27 +0000 | [diff] [blame] | 2610 | Chain = DAG.getNode(MipsISD::JmpLink, dl, NodeTys, &Ops[0], Ops.size()); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2611 | InFlag = Chain.getValue(1); |
| 2612 | |
Bruno Cardoso Lopes | 3ed6f87 | 2010-01-30 18:32:07 +0000 | [diff] [blame] | 2613 | // Create the CALLSEQ_END node. |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 2614 | Chain = DAG.getCALLSEQ_END(Chain, |
| 2615 | DAG.getIntPtrConstant(NextStackOffset, true), |
Bruno Cardoso Lopes | 3ed6f87 | 2010-01-30 18:32:07 +0000 | [diff] [blame] | 2616 | DAG.getIntPtrConstant(0, true), InFlag); |
| 2617 | InFlag = Chain.getValue(1); |
| 2618 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2619 | // Handle result values, copying them out of physregs into vregs that we |
| 2620 | // return. |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2621 | return LowerCallResult(Chain, InFlag, CallConv, isVarArg, |
| 2622 | Ins, dl, DAG, InVals); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2623 | } |
| 2624 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2625 | /// LowerCallResult - Lower the result values of a call into the |
| 2626 | /// appropriate copies out of appropriate physical registers. |
| 2627 | SDValue |
| 2628 | MipsTargetLowering::LowerCallResult(SDValue Chain, SDValue InFlag, |
Sandeep Patel | 65c3c8f | 2009-09-02 08:44:58 +0000 | [diff] [blame] | 2629 | CallingConv::ID CallConv, bool isVarArg, |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2630 | const SmallVectorImpl<ISD::InputArg> &Ins, |
| 2631 | DebugLoc dl, SelectionDAG &DAG, |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 2632 | SmallVectorImpl<SDValue> &InVals) const { |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2633 | // Assign locations to each value returned by this call. |
| 2634 | SmallVector<CCValAssign, 16> RVLocs; |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 2635 | CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), |
| 2636 | getTargetMachine(), RVLocs, *DAG.getContext()); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2637 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2638 | CCInfo.AnalyzeCallResult(Ins, RetCC_Mips); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2639 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2640 | // Copy all of the result registers out of their specified physreg. |
| 2641 | for (unsigned i = 0; i != RVLocs.size(); ++i) { |
Dale Johannesen | 33c960f | 2009-02-04 20:06:27 +0000 | [diff] [blame] | 2642 | Chain = DAG.getCopyFromReg(Chain, dl, RVLocs[i].getLocReg(), |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2643 | RVLocs[i].getValVT(), InFlag).getValue(1); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2644 | InFlag = Chain.getValue(2); |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2645 | InVals.push_back(Chain.getValue(0)); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2646 | } |
Bruno Cardoso Lopes | c7db561 | 2007-11-05 03:02:32 +0000 | [diff] [blame] | 2647 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2648 | return Chain; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2649 | } |
| 2650 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2651 | //===----------------------------------------------------------------------===// |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2652 | // Formal Arguments Calling Convention Implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2653 | //===----------------------------------------------------------------------===// |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2654 | static void ReadByValArg(MachineFunction &MF, SDValue Chain, DebugLoc dl, |
| 2655 | std::vector<SDValue>& OutChains, |
| 2656 | SelectionDAG &DAG, unsigned NumWords, SDValue FIN, |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 2657 | const CCValAssign &VA, const ISD::ArgFlagsTy& Flags, |
| 2658 | const Argument *FuncArg) { |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2659 | unsigned LocMem = VA.getLocMemOffset(); |
| 2660 | unsigned FirstWord = LocMem / 4; |
| 2661 | |
| 2662 | // copy register A0 - A3 to frame object |
| 2663 | for (unsigned i = 0; i < NumWords; ++i) { |
| 2664 | unsigned CurWord = FirstWord + i; |
| 2665 | if (CurWord >= O32IntRegsSize) |
| 2666 | break; |
| 2667 | |
| 2668 | unsigned SrcReg = O32IntRegs[CurWord]; |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 2669 | unsigned Reg = AddLiveIn(MF, SrcReg, &Mips::CPURegsRegClass); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2670 | SDValue StorePtr = DAG.getNode(ISD::ADD, dl, MVT::i32, FIN, |
| 2671 | DAG.getConstant(i * 4, MVT::i32)); |
| 2672 | SDValue Store = DAG.getStore(Chain, dl, DAG.getRegister(Reg, MVT::i32), |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 2673 | StorePtr, MachinePointerInfo(FuncArg, i * 4), |
| 2674 | false, false, 0); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2675 | OutChains.push_back(Store); |
| 2676 | } |
| 2677 | } |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2678 | |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 2679 | // Create frame object on stack and copy registers used for byval passing to it. |
| 2680 | static unsigned |
| 2681 | CopyMips64ByValRegs(MachineFunction &MF, SDValue Chain, DebugLoc dl, |
| 2682 | std::vector<SDValue>& OutChains, SelectionDAG &DAG, |
| 2683 | const CCValAssign &VA, const ISD::ArgFlagsTy& Flags, |
| 2684 | MachineFrameInfo *MFI, bool IsRegLoc, |
| 2685 | SmallVectorImpl<SDValue> &InVals, MipsFunctionInfo *MipsFI, |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 2686 | EVT PtrTy, const Argument *FuncArg) { |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2687 | const uint16_t *Reg = Mips64IntRegs + 8; |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 2688 | int FOOffset; // Frame object offset from virtual frame pointer. |
| 2689 | |
| 2690 | if (IsRegLoc) { |
| 2691 | Reg = std::find(Mips64IntRegs, Mips64IntRegs + 8, VA.getLocReg()); |
| 2692 | FOOffset = (Reg - Mips64IntRegs) * 8 - 8 * 8; |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 2693 | } |
| 2694 | else |
| 2695 | FOOffset = VA.getLocMemOffset(); |
| 2696 | |
| 2697 | // Create frame object. |
| 2698 | unsigned NumRegs = (Flags.getByValSize() + 7) / 8; |
| 2699 | unsigned LastFI = MFI->CreateFixedObject(NumRegs * 8, FOOffset, true); |
| 2700 | SDValue FIN = DAG.getFrameIndex(LastFI, PtrTy); |
| 2701 | InVals.push_back(FIN); |
| 2702 | |
| 2703 | // Copy arg registers. |
| 2704 | for (unsigned I = 0; (Reg != Mips64IntRegs + 8) && (I < NumRegs); |
| 2705 | ++Reg, ++I) { |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 2706 | unsigned VReg = AddLiveIn(MF, *Reg, &Mips::CPU64RegsRegClass); |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 2707 | SDValue StorePtr = DAG.getNode(ISD::ADD, dl, PtrTy, FIN, |
| 2708 | DAG.getConstant(I * 8, PtrTy)); |
| 2709 | SDValue Store = DAG.getStore(Chain, dl, DAG.getRegister(VReg, MVT::i64), |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 2710 | StorePtr, MachinePointerInfo(FuncArg, I * 8), |
| 2711 | false, false, 0); |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 2712 | OutChains.push_back(Store); |
| 2713 | } |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 2714 | |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 2715 | return LastFI; |
| 2716 | } |
| 2717 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2718 | /// LowerFormalArguments - transform physical registers into virtual registers |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2719 | /// and generate load operations for arguments places on the stack. |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2720 | SDValue |
| 2721 | MipsTargetLowering::LowerFormalArguments(SDValue Chain, |
Akira Hatanaka | 0bf3dfb | 2011-04-15 21:00:26 +0000 | [diff] [blame] | 2722 | CallingConv::ID CallConv, |
| 2723 | bool isVarArg, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2724 | const SmallVectorImpl<ISD::InputArg> &Ins, |
Akira Hatanaka | 0bf3dfb | 2011-04-15 21:00:26 +0000 | [diff] [blame] | 2725 | DebugLoc dl, SelectionDAG &DAG, |
| 2726 | SmallVectorImpl<SDValue> &InVals) |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2727 | const { |
Bruno Cardoso Lopes | f7f3b50 | 2008-08-04 07:12:52 +0000 | [diff] [blame] | 2728 | MachineFunction &MF = DAG.getMachineFunction(); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2729 | MachineFrameInfo *MFI = MF.getFrameInfo(); |
Bruno Cardoso Lopes | a2b1bb5 | 2007-08-28 05:08:16 +0000 | [diff] [blame] | 2730 | MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>(); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2731 | |
Dan Gohman | 1e93df6 | 2010-04-17 14:41:14 +0000 | [diff] [blame] | 2732 | MipsFI->setVarArgsFrameIndex(0); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2733 | |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2734 | // Used with vargs to acumulate store chains. |
| 2735 | std::vector<SDValue> OutChains; |
| 2736 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2737 | // Assign locations to all of the incoming arguments. |
| 2738 | SmallVector<CCValAssign, 16> ArgLocs; |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 2739 | CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2740 | getTargetMachine(), ArgLocs, *DAG.getContext()); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2741 | |
Akira Hatanaka | 2ec69fa | 2011-10-28 18:47:24 +0000 | [diff] [blame] | 2742 | if (IsO32) |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 2743 | CCInfo.AnalyzeFormalArguments(Ins, CC_MipsO32); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2744 | else |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2745 | CCInfo.AnalyzeFormalArguments(Ins, CC_Mips); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2746 | |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 2747 | Function::const_arg_iterator FuncArg = |
| 2748 | DAG.getMachineFunction().getFunction()->arg_begin(); |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 2749 | 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] | 2750 | |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 2751 | for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i, ++FuncArg) { |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2752 | CCValAssign &VA = ArgLocs[i]; |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 2753 | EVT ValVT = VA.getValVT(); |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 2754 | ISD::ArgFlagsTy Flags = Ins[i].Flags; |
| 2755 | bool IsRegLoc = VA.isRegLoc(); |
| 2756 | |
| 2757 | if (Flags.isByVal()) { |
| 2758 | assert(Flags.getByValSize() && |
| 2759 | "ByVal args of size 0 should have been ignored by front-end."); |
| 2760 | if (IsO32) { |
| 2761 | unsigned NumWords = (Flags.getByValSize() + 3) / 4; |
| 2762 | LastFI = MFI->CreateFixedObject(NumWords * 4, VA.getLocMemOffset(), |
| 2763 | true); |
| 2764 | SDValue FIN = DAG.getFrameIndex(LastFI, getPointerTy()); |
| 2765 | InVals.push_back(FIN); |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 2766 | ReadByValArg(MF, Chain, dl, OutChains, DAG, NumWords, FIN, VA, Flags, |
| 2767 | &*FuncArg); |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 2768 | } else // N32/64 |
| 2769 | LastFI = CopyMips64ByValRegs(MF, Chain, dl, OutChains, DAG, VA, Flags, |
| 2770 | MFI, IsRegLoc, InVals, MipsFI, |
Akira Hatanaka | b4549e1 | 2012-03-27 03:13:56 +0000 | [diff] [blame] | 2771 | getPointerTy(), &*FuncArg); |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 2772 | continue; |
| 2773 | } |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2774 | |
| 2775 | // Arguments stored on registers |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 2776 | if (IsRegLoc) { |
Owen Anderson | e50ed30 | 2009-08-10 22:56:29 +0000 | [diff] [blame] | 2777 | EVT RegVT = VA.getLocVT(); |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 2778 | unsigned ArgReg = VA.getLocReg(); |
Craig Topper | 44d2382 | 2012-02-22 05:59:10 +0000 | [diff] [blame] | 2779 | const TargetRegisterClass *RC; |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2780 | |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 2781 | if (RegVT == MVT::i32) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 2782 | RC = &Mips::CPURegsRegClass; |
Akira Hatanaka | 9593484 | 2011-09-24 01:34:44 +0000 | [diff] [blame] | 2783 | else if (RegVT == MVT::i64) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 2784 | RC = &Mips::CPU64RegsRegClass; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2785 | else if (RegVT == MVT::f32) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 2786 | RC = &Mips::FGR32RegClass; |
Akira Hatanaka | 09dd60f | 2011-09-26 21:37:50 +0000 | [diff] [blame] | 2787 | else if (RegVT == MVT::f64) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 2788 | RC = HasMips64 ? &Mips::FGR64RegClass : &Mips::AFGR64RegClass; |
Akira Hatanaka | 09dd60f | 2011-09-26 21:37:50 +0000 | [diff] [blame] | 2789 | else |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2790 | llvm_unreachable("RegVT not supported by FormalArguments Lowering"); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2791 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2792 | // Transform the arguments stored on |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2793 | // physical registers into virtual ones |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 2794 | unsigned Reg = AddLiveIn(DAG.getMachineFunction(), ArgReg, RC); |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2795 | SDValue ArgValue = DAG.getCopyFromReg(Chain, dl, Reg, RegVT); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2796 | |
| 2797 | // If this is an 8 or 16-bit value, it has been passed promoted |
| 2798 | // 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] | 2799 | // truncate to the right size. |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2800 | if (VA.getLocInfo() != CCValAssign::Full) { |
Chris Lattner | d401507 | 2009-03-26 05:28:14 +0000 | [diff] [blame] | 2801 | unsigned Opcode = 0; |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2802 | if (VA.getLocInfo() == CCValAssign::SExt) |
| 2803 | Opcode = ISD::AssertSext; |
| 2804 | else if (VA.getLocInfo() == CCValAssign::ZExt) |
| 2805 | Opcode = ISD::AssertZext; |
Chris Lattner | d401507 | 2009-03-26 05:28:14 +0000 | [diff] [blame] | 2806 | if (Opcode) |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2807 | ArgValue = DAG.getNode(Opcode, dl, RegVT, ArgValue, |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 2808 | DAG.getValueType(ValVT)); |
| 2809 | ArgValue = DAG.getNode(ISD::TRUNCATE, dl, ValVT, ArgValue); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2810 | } |
| 2811 | |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 2812 | // Handle floating point arguments passed in integer registers. |
| 2813 | if ((RegVT == MVT::i32 && ValVT == MVT::f32) || |
| 2814 | (RegVT == MVT::i64 && ValVT == MVT::f64)) |
| 2815 | ArgValue = DAG.getNode(ISD::BITCAST, dl, ValVT, ArgValue); |
| 2816 | else if (IsO32 && RegVT == MVT::i32 && ValVT == MVT::f64) { |
| 2817 | unsigned Reg2 = AddLiveIn(DAG.getMachineFunction(), |
| 2818 | getNextIntArgReg(ArgReg), RC); |
| 2819 | SDValue ArgValue2 = DAG.getCopyFromReg(Chain, dl, Reg2, RegVT); |
| 2820 | if (!Subtarget->isLittle()) |
| 2821 | std::swap(ArgValue, ArgValue2); |
| 2822 | ArgValue = DAG.getNode(MipsISD::BuildPairF64, dl, MVT::f64, |
| 2823 | ArgValue, ArgValue2); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2824 | } |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2825 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2826 | InVals.push_back(ArgValue); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2827 | } else { // VA.isRegLoc() |
| 2828 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2829 | // sanity check |
| 2830 | assert(VA.isMemLoc()); |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2831 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2832 | // The stack pointer offset is relative to the caller stack frame. |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 2833 | LastFI = MFI->CreateFixedObject(ValVT.getSizeInBits()/8, |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 2834 | VA.getLocMemOffset(), true); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2835 | |
| 2836 | // Create load nodes to retrieve arguments from the stack |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 2837 | SDValue FIN = DAG.getFrameIndex(LastFI, getPointerTy()); |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 2838 | InVals.push_back(DAG.getLoad(ValVT, dl, Chain, FIN, |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 2839 | MachinePointerInfo::getFixedStack(LastFI), |
Pete Cooper | d752e0f | 2011-11-08 18:42:53 +0000 | [diff] [blame] | 2840 | false, false, false, 0)); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2841 | } |
| 2842 | } |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2843 | |
| 2844 | // The mips ABIs for returning structs by value requires that we copy |
| 2845 | // the sret argument into $v0 for the return. Save the argument into |
| 2846 | // a virtual register so that we can access it from the return points. |
| 2847 | if (DAG.getMachineFunction().getFunction()->hasStructRetAttr()) { |
| 2848 | unsigned Reg = MipsFI->getSRetReturnReg(); |
| 2849 | if (!Reg) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 2850 | Reg = MF.getRegInfo().createVirtualRegister(getRegClassFor(MVT::i32)); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2851 | MipsFI->setSRetReturnReg(Reg); |
| 2852 | } |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2853 | SDValue Copy = DAG.getCopyToReg(DAG.getEntryNode(), dl, Reg, InVals[0]); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 2854 | Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Copy, Chain); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2855 | } |
| 2856 | |
Akira Hatanaka | bad53f4 | 2011-11-14 19:01:09 +0000 | [diff] [blame] | 2857 | if (isVarArg) { |
| 2858 | unsigned NumOfRegs = IsO32 ? 4 : 8; |
Craig Topper | c5eaae4 | 2012-03-11 07:57:25 +0000 | [diff] [blame] | 2859 | const uint16_t *ArgRegs = IsO32 ? O32IntRegs : Mips64IntRegs; |
Akira Hatanaka | bad53f4 | 2011-11-14 19:01:09 +0000 | [diff] [blame] | 2860 | unsigned Idx = CCInfo.getFirstUnallocated(ArgRegs, NumOfRegs); |
| 2861 | int FirstRegSlotOffset = IsO32 ? 0 : -64 ; // offset of $a0's slot. |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 2862 | const TargetRegisterClass *RC = IsO32 ? |
| 2863 | (const TargetRegisterClass*)&Mips::CPURegsRegClass : |
| 2864 | (const TargetRegisterClass*)&Mips::CPU64RegsRegClass; |
Akira Hatanaka | bad53f4 | 2011-11-14 19:01:09 +0000 | [diff] [blame] | 2865 | unsigned RegSize = RC->getSize(); |
| 2866 | int RegSlotOffset = FirstRegSlotOffset + Idx * RegSize; |
| 2867 | |
| 2868 | // Offset of the first variable argument from stack pointer. |
| 2869 | int FirstVaArgOffset; |
| 2870 | |
| 2871 | if (IsO32 || (Idx == NumOfRegs)) { |
| 2872 | FirstVaArgOffset = |
| 2873 | (CCInfo.getNextStackOffset() + RegSize - 1) / RegSize * RegSize; |
| 2874 | } else |
| 2875 | FirstVaArgOffset = RegSlotOffset; |
| 2876 | |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 2877 | // Record the frame index of the first variable argument |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 2878 | // which is a value necessary to VASTART. |
Akira Hatanaka | bad53f4 | 2011-11-14 19:01:09 +0000 | [diff] [blame] | 2879 | LastFI = MFI->CreateFixedObject(RegSize, FirstVaArgOffset, true); |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 2880 | MipsFI->setVarArgsFrameIndex(LastFI); |
Akira Hatanaka | edacba8 | 2011-05-25 17:32:06 +0000 | [diff] [blame] | 2881 | |
Akira Hatanaka | bad53f4 | 2011-11-14 19:01:09 +0000 | [diff] [blame] | 2882 | // Copy the integer registers that have not been used for argument passing |
| 2883 | // to the argument register save area. For O32, the save area is allocated |
| 2884 | // in the caller's stack frame, while for N32/64, it is allocated in the |
| 2885 | // callee's stack frame. |
| 2886 | for (int StackOffset = RegSlotOffset; |
| 2887 | Idx < NumOfRegs; ++Idx, StackOffset += RegSize) { |
| 2888 | unsigned Reg = AddLiveIn(DAG.getMachineFunction(), ArgRegs[Idx], RC); |
| 2889 | SDValue ArgValue = DAG.getCopyFromReg(Chain, dl, Reg, |
| 2890 | MVT::getIntegerVT(RegSize * 8)); |
| 2891 | LastFI = MFI->CreateFixedObject(RegSize, StackOffset, true); |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 2892 | SDValue PtrOff = DAG.getFrameIndex(LastFI, getPointerTy()); |
| 2893 | OutChains.push_back(DAG.getStore(Chain, dl, ArgValue, PtrOff, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2894 | MachinePointerInfo(), false, false, 0)); |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2895 | } |
| 2896 | } |
| 2897 | |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 2898 | MipsFI->setLastInArgFI(LastFI); |
| 2899 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2900 | // 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] | 2901 | // the size of Ins and InVals. This only happens when on varg functions |
| 2902 | if (!OutChains.empty()) { |
| 2903 | OutChains.push_back(Chain); |
| 2904 | Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, |
| 2905 | &OutChains[0], OutChains.size()); |
| 2906 | } |
| 2907 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2908 | return Chain; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2909 | } |
| 2910 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2911 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2912 | // Return Value Calling Convention Implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2913 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2914 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2915 | SDValue |
| 2916 | MipsTargetLowering::LowerReturn(SDValue Chain, |
Sandeep Patel | 65c3c8f | 2009-09-02 08:44:58 +0000 | [diff] [blame] | 2917 | CallingConv::ID CallConv, bool isVarArg, |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2918 | const SmallVectorImpl<ISD::OutputArg> &Outs, |
Dan Gohman | c940365 | 2010-07-07 15:54:55 +0000 | [diff] [blame] | 2919 | const SmallVectorImpl<SDValue> &OutVals, |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 2920 | DebugLoc dl, SelectionDAG &DAG) const { |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2921 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2922 | // CCValAssign - represent the assignment of |
| 2923 | // the return value to a location |
| 2924 | SmallVector<CCValAssign, 16> RVLocs; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2925 | |
| 2926 | // CCState - Info about the registers and stack slot. |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 2927 | CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), |
| 2928 | getTargetMachine(), RVLocs, *DAG.getContext()); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2929 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2930 | // Analize return values. |
| 2931 | CCInfo.AnalyzeReturn(Outs, RetCC_Mips); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2932 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2933 | // If this is the first return lowered for this function, add |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2934 | // the regs to the liveout set for the function. |
Chris Lattner | 84bc542 | 2007-12-31 04:13:23 +0000 | [diff] [blame] | 2935 | if (DAG.getMachineFunction().getRegInfo().liveout_empty()) { |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2936 | for (unsigned i = 0; i != RVLocs.size(); ++i) |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2937 | if (RVLocs[i].isRegLoc()) |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2938 | DAG.getMachineFunction().getRegInfo().addLiveOut(RVLocs[i].getLocReg()); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2939 | } |
| 2940 | |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 2941 | SDValue Flag; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2942 | |
| 2943 | // Copy the result values into the output registers. |
| 2944 | for (unsigned i = 0; i != RVLocs.size(); ++i) { |
| 2945 | CCValAssign &VA = RVLocs[i]; |
| 2946 | assert(VA.isRegLoc() && "Can only return in registers!"); |
| 2947 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2948 | Chain = DAG.getCopyToReg(Chain, dl, VA.getLocReg(), OutVals[i], Flag); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2949 | |
| 2950 | // guarantee that all emitted copies are |
| 2951 | // stuck together, avoiding something bad |
| 2952 | Flag = Chain.getValue(1); |
| 2953 | } |
| 2954 | |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2955 | // The mips ABIs for returning structs by value requires that we copy |
| 2956 | // the sret argument into $v0 for the return. We saved the argument into |
| 2957 | // a virtual register in the entry block, so now we copy the value out |
| 2958 | // and into $v0. |
| 2959 | if (DAG.getMachineFunction().getFunction()->hasStructRetAttr()) { |
| 2960 | MachineFunction &MF = DAG.getMachineFunction(); |
| 2961 | MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>(); |
| 2962 | unsigned Reg = MipsFI->getSRetReturnReg(); |
| 2963 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2964 | if (!Reg) |
Torok Edwin | c23197a | 2009-07-14 16:55:14 +0000 | [diff] [blame] | 2965 | llvm_unreachable("sret virtual register not created in the entry block"); |
Dale Johannesen | a05dca4 | 2009-02-04 23:02:30 +0000 | [diff] [blame] | 2966 | SDValue Val = DAG.getCopyFromReg(Chain, dl, Reg, getPointerTy()); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2967 | |
Dale Johannesen | a05dca4 | 2009-02-04 23:02:30 +0000 | [diff] [blame] | 2968 | Chain = DAG.getCopyToReg(Chain, dl, Mips::V0, Val, Flag); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2969 | Flag = Chain.getValue(1); |
| 2970 | } |
| 2971 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2972 | // Return on Mips is always a "jr $ra" |
Gabor Greif | ba36cb5 | 2008-08-28 21:40:38 +0000 | [diff] [blame] | 2973 | if (Flag.getNode()) |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2974 | return DAG.getNode(MipsISD::Ret, dl, MVT::Other, |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 2975 | Chain, DAG.getRegister(Mips::RA, MVT::i32), Flag); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2976 | else // Return Void |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2977 | return DAG.getNode(MipsISD::Ret, dl, MVT::Other, |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 2978 | Chain, DAG.getRegister(Mips::RA, MVT::i32)); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2979 | } |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2980 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2981 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2982 | // Mips Inline Assembly Support |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2983 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2984 | |
| 2985 | /// getConstraintType - Given a constraint letter, return the type of |
| 2986 | /// constraint it is for this target. |
| 2987 | MipsTargetLowering::ConstraintType MipsTargetLowering:: |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2988 | getConstraintType(const std::string &Constraint) const |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2989 | { |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2990 | // Mips specific constrainy |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2991 | // GCC config/mips/constraints.md |
| 2992 | // |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2993 | // 'd' : An address register. Equivalent to r |
| 2994 | // unless generating MIPS16 code. |
| 2995 | // 'y' : Equivalent to r; retained for |
| 2996 | // backwards compatibility. |
| 2997 | // 'f' : Floating Point registers. |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2998 | if (Constraint.size() == 1) { |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2999 | switch (Constraint[0]) { |
| 3000 | default : break; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3001 | case 'd': |
| 3002 | case 'y': |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 3003 | case 'f': |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3004 | return C_RegisterClass; |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3005 | } |
| 3006 | } |
| 3007 | return TargetLowering::getConstraintType(Constraint); |
| 3008 | } |
| 3009 | |
John Thompson | 44ab89e | 2010-10-29 17:29:13 +0000 | [diff] [blame] | 3010 | /// Examine constraint type and operand type and determine a weight value. |
| 3011 | /// This object must already have been set up with the operand type |
| 3012 | /// and the current alternative constraint selected. |
| 3013 | TargetLowering::ConstraintWeight |
| 3014 | MipsTargetLowering::getSingleConstraintMatchWeight( |
| 3015 | AsmOperandInfo &info, const char *constraint) const { |
| 3016 | ConstraintWeight weight = CW_Invalid; |
| 3017 | Value *CallOperandVal = info.CallOperandVal; |
| 3018 | // If we don't have a value, we can't do a match, |
| 3019 | // but allow it at the lowest weight. |
| 3020 | if (CallOperandVal == NULL) |
| 3021 | return CW_Default; |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 3022 | Type *type = CallOperandVal->getType(); |
John Thompson | 44ab89e | 2010-10-29 17:29:13 +0000 | [diff] [blame] | 3023 | // Look at the constraint type. |
| 3024 | switch (*constraint) { |
| 3025 | default: |
| 3026 | weight = TargetLowering::getSingleConstraintMatchWeight(info, constraint); |
| 3027 | break; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 3028 | case 'd': |
| 3029 | case 'y': |
John Thompson | 44ab89e | 2010-10-29 17:29:13 +0000 | [diff] [blame] | 3030 | if (type->isIntegerTy()) |
| 3031 | weight = CW_Register; |
| 3032 | break; |
| 3033 | case 'f': |
| 3034 | if (type->isFloatTy()) |
| 3035 | weight = CW_Register; |
| 3036 | break; |
| 3037 | } |
| 3038 | return weight; |
| 3039 | } |
| 3040 | |
Eric Christopher | 38d6426 | 2011-06-29 19:33:04 +0000 | [diff] [blame] | 3041 | /// Given a register class constraint, like 'r', if this corresponds directly |
| 3042 | /// to an LLVM register class, return a register of 0 and the register class |
| 3043 | /// pointer. |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3044 | std::pair<unsigned, const TargetRegisterClass*> MipsTargetLowering:: |
Owen Anderson | e50ed30 | 2009-08-10 22:56:29 +0000 | [diff] [blame] | 3045 | getRegForInlineAsmConstraint(const std::string &Constraint, EVT VT) const |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3046 | { |
| 3047 | if (Constraint.size() == 1) { |
| 3048 | switch (Constraint[0]) { |
Eric Christopher | 314aff1 | 2011-06-29 19:04:31 +0000 | [diff] [blame] | 3049 | case 'd': // Address register. Same as 'r' unless generating MIPS16 code. |
| 3050 | case 'y': // Same as 'r'. Exists for compatibility. |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3051 | case 'r': |
Akira Hatanaka | cb9dd72 | 2012-01-04 02:45:01 +0000 | [diff] [blame] | 3052 | if (VT == MVT::i32) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 3053 | return std::make_pair(0U, &Mips::CPURegsRegClass); |
Akira Hatanaka | cb9dd72 | 2012-01-04 02:45:01 +0000 | [diff] [blame] | 3054 | assert(VT == MVT::i64 && "Unexpected type."); |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 3055 | return std::make_pair(0U, &Mips::CPU64RegsRegClass); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 3056 | case 'f': |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 3057 | if (VT == MVT::f32) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 3058 | return std::make_pair(0U, &Mips::FGR32RegClass); |
Akira Hatanaka | cb9dd72 | 2012-01-04 02:45:01 +0000 | [diff] [blame] | 3059 | if ((VT == MVT::f64) && (!Subtarget->isSingleFloat())) { |
| 3060 | if (Subtarget->isFP64bit()) |
Craig Topper | 420761a | 2012-04-20 07:30:17 +0000 | [diff] [blame^] | 3061 | return std::make_pair(0U, &Mips::FGR64RegClass); |
| 3062 | return std::make_pair(0U, &Mips::AFGR64RegClass); |
Akira Hatanaka | cb9dd72 | 2012-01-04 02:45:01 +0000 | [diff] [blame] | 3063 | } |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 3064 | } |
| 3065 | } |
| 3066 | return TargetLowering::getRegForInlineAsmConstraint(Constraint, VT); |
| 3067 | } |
| 3068 | |
Dan Gohman | 6520e20 | 2008-10-18 02:06:02 +0000 | [diff] [blame] | 3069 | bool |
| 3070 | MipsTargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const { |
| 3071 | // The Mips target isn't yet aware of offsets. |
| 3072 | return false; |
| 3073 | } |
Evan Cheng | eb2f969 | 2009-10-27 19:56:55 +0000 | [diff] [blame] | 3074 | |
Evan Cheng | a1eaa3c | 2009-10-28 01:43:28 +0000 | [diff] [blame] | 3075 | bool MipsTargetLowering::isFPImmLegal(const APFloat &Imm, EVT VT) const { |
| 3076 | if (VT != MVT::f32 && VT != MVT::f64) |
| 3077 | return false; |
Bruno Cardoso Lopes | 6b90282 | 2011-01-18 19:41:41 +0000 | [diff] [blame] | 3078 | if (Imm.isNegZero()) |
| 3079 | return false; |
Evan Cheng | eb2f969 | 2009-10-27 19:56:55 +0000 | [diff] [blame] | 3080 | return Imm.isZero(); |
| 3081 | } |
Akira Hatanaka | 6c2cf8b | 2012-02-03 04:33:00 +0000 | [diff] [blame] | 3082 | |
| 3083 | unsigned MipsTargetLowering::getJumpTableEncoding() const { |
| 3084 | if (IsN64) |
| 3085 | return MachineJumpTableInfo::EK_GPRel64BlockAddress; |
Jia Liu | bb481f8 | 2012-02-28 07:46:26 +0000 | [diff] [blame] | 3086 | |
Akira Hatanaka | 6c2cf8b | 2012-02-03 04:33:00 +0000 | [diff] [blame] | 3087 | return TargetLowering::getJumpTableEncoding(); |
| 3088 | } |