Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +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" |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 21 | #include "llvm/DerivedTypes.h" |
| 22 | #include "llvm/Function.h" |
Bruno Cardoso Lopes | 91fd532 | 2008-07-21 18:52:34 +0000 | [diff] [blame] | 23 | #include "llvm/GlobalVariable.h" |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 24 | #include "llvm/Intrinsics.h" |
| 25 | #include "llvm/CallingConv.h" |
Akira Hatanaka | 794bf17 | 2011-07-07 23:56:50 +0000 | [diff] [blame] | 26 | #include "InstPrinter/MipsInstPrinter.h" |
Bruno Cardoso Lopes | 47b92f3 | 2011-11-11 22:58:42 +0000 | [diff] [blame] | 27 | #include "MCTargetDesc/MipsBaseInfo.h" |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 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 | |
Akira Hatanaka | dbe9a31 | 2011-08-18 20:07:42 +0000 | [diff] [blame] | 39 | // If I is a shifted mask, set the size (Size) and the first bit of the |
| 40 | // mask (Pos), and return true. |
Akira Hatanaka | 854a7db | 2011-08-19 22:59:00 +0000 | [diff] [blame] | 41 | // For example, if I is 0x003ff800, (Pos, Size) = (11, 11). |
| 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 | |
Chris Lattner | f014412 | 2009-07-28 03:13:23 +0000 | [diff] [blame] | 51 | const char *MipsTargetLowering::getTargetNodeName(unsigned Opcode) const { |
| 52 | switch (Opcode) { |
Akira Hatanaka | bdd2ce9 | 2011-05-23 21:13:59 +0000 | [diff] [blame] | 53 | case MipsISD::JmpLink: return "MipsISD::JmpLink"; |
| 54 | case MipsISD::Hi: return "MipsISD::Hi"; |
| 55 | case MipsISD::Lo: return "MipsISD::Lo"; |
| 56 | case MipsISD::GPRel: return "MipsISD::GPRel"; |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 57 | case MipsISD::ThreadPointer: return "MipsISD::ThreadPointer"; |
Akira Hatanaka | bdd2ce9 | 2011-05-23 21:13:59 +0000 | [diff] [blame] | 58 | case MipsISD::Ret: return "MipsISD::Ret"; |
| 59 | case MipsISD::FPBrcond: return "MipsISD::FPBrcond"; |
| 60 | case MipsISD::FPCmp: return "MipsISD::FPCmp"; |
| 61 | case MipsISD::CMovFP_T: return "MipsISD::CMovFP_T"; |
| 62 | case MipsISD::CMovFP_F: return "MipsISD::CMovFP_F"; |
| 63 | case MipsISD::FPRound: return "MipsISD::FPRound"; |
| 64 | case MipsISD::MAdd: return "MipsISD::MAdd"; |
| 65 | case MipsISD::MAddu: return "MipsISD::MAddu"; |
| 66 | case MipsISD::MSub: return "MipsISD::MSub"; |
| 67 | case MipsISD::MSubu: return "MipsISD::MSubu"; |
| 68 | case MipsISD::DivRem: return "MipsISD::DivRem"; |
| 69 | case MipsISD::DivRemU: return "MipsISD::DivRemU"; |
| 70 | case MipsISD::BuildPairF64: return "MipsISD::BuildPairF64"; |
| 71 | case MipsISD::ExtractElementF64: return "MipsISD::ExtractElementF64"; |
Akira Hatanaka | bfcb83f | 2011-12-12 22:38:19 +0000 | [diff] [blame] | 72 | case MipsISD::Wrapper: return "MipsISD::Wrapper"; |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 73 | case MipsISD::DynAlloc: return "MipsISD::DynAlloc"; |
Akira Hatanaka | db54826 | 2011-07-19 23:30:50 +0000 | [diff] [blame] | 74 | case MipsISD::Sync: return "MipsISD::Sync"; |
Akira Hatanaka | bb15e11 | 2011-08-17 02:05:42 +0000 | [diff] [blame] | 75 | case MipsISD::Ext: return "MipsISD::Ext"; |
| 76 | case MipsISD::Ins: return "MipsISD::Ins"; |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 77 | default: return NULL; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 78 | } |
| 79 | } |
| 80 | |
| 81 | MipsTargetLowering:: |
Chris Lattner | f014412 | 2009-07-28 03:13:23 +0000 | [diff] [blame] | 82 | MipsTargetLowering(MipsTargetMachine &TM) |
Akira Hatanaka | 8b4198d | 2011-09-26 21:47:02 +0000 | [diff] [blame] | 83 | : TargetLowering(TM, new MipsTargetObjectFile()), |
| 84 | Subtarget(&TM.getSubtarget<MipsSubtarget>()), |
Akira Hatanaka | 2ec69fa | 2011-10-28 18:47:24 +0000 | [diff] [blame] | 85 | HasMips64(Subtarget->hasMips64()), IsN64(Subtarget->isABI_N64()), |
| 86 | IsO32(Subtarget->isABI_O32()) { |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 87 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 88 | // Mips does not have i1 type, so use i32 for |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 89 | // setcc operations results (slt, sgt, ...). |
Duncan Sands | 0322808 | 2008-11-23 15:47:28 +0000 | [diff] [blame] | 90 | setBooleanContents(ZeroOrOneBooleanContent); |
Duncan Sands | 28b77e9 | 2011-09-06 19:07:46 +0000 | [diff] [blame] | 91 | setBooleanVectorContents(ZeroOrOneBooleanContent); // FIXME: Is this correct? |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 92 | |
| 93 | // Set up the register classes |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 94 | addRegisterClass(MVT::i32, Mips::CPURegsRegisterClass); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 95 | |
Akira Hatanaka | 9593484 | 2011-09-24 01:34:44 +0000 | [diff] [blame] | 96 | if (HasMips64) |
| 97 | addRegisterClass(MVT::i64, Mips::CPU64RegsRegisterClass); |
| 98 | |
Akira Hatanaka | b0e7af7 | 2012-01-04 19:29:11 +0000 | [diff] [blame] | 99 | if (!TM.Options.UseSoftFloat) { |
| 100 | addRegisterClass(MVT::f32, Mips::FGR32RegisterClass); |
| 101 | |
| 102 | // When dealing with single precision only, use libcalls |
| 103 | if (!Subtarget->isSingleFloat()) { |
| 104 | if (HasMips64) |
| 105 | addRegisterClass(MVT::f64, Mips::FGR64RegisterClass); |
| 106 | else |
| 107 | addRegisterClass(MVT::f64, Mips::AFGR64RegisterClass); |
| 108 | } |
Akira Hatanaka | 792016b | 2011-09-23 18:28:39 +0000 | [diff] [blame] | 109 | } |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 110 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 111 | // Load extented operations for i1 types must be promoted |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 112 | setLoadExtAction(ISD::EXTLOAD, MVT::i1, Promote); |
| 113 | setLoadExtAction(ISD::ZEXTLOAD, MVT::i1, Promote); |
| 114 | setLoadExtAction(ISD::SEXTLOAD, MVT::i1, Promote); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 115 | |
Eli Friedman | 6055a6a | 2009-07-17 04:07:24 +0000 | [diff] [blame] | 116 | // MIPS doesn't have extending float->double load/store |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 117 | setLoadExtAction(ISD::EXTLOAD, MVT::f32, Expand); |
| 118 | setTruncStoreAction(MVT::f64, MVT::f32, Expand); |
Eli Friedman | 10a3659 | 2009-07-17 02:28:12 +0000 | [diff] [blame] | 119 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 120 | // Used by legalize types to correctly generate the setcc result. |
| 121 | // Without this, every float setcc comes with a AND/OR with the result, |
| 122 | // 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] | 123 | // which is used implicitly by brcond and select operations. |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 124 | AddPromotedToType(ISD::SETCC, MVT::i1, MVT::i32); |
Bruno Cardoso Lopes | 7728377 | 2008-07-31 18:31:28 +0000 | [diff] [blame] | 125 | |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 126 | // Mips Custom Operations |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 127 | setOperationAction(ISD::GlobalAddress, MVT::i32, Custom); |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 128 | setOperationAction(ISD::GlobalAddress, MVT::i64, Custom); |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 129 | setOperationAction(ISD::BlockAddress, MVT::i32, Custom); |
Akira Hatanaka | 9b944a8 | 2011-11-16 22:42:10 +0000 | [diff] [blame] | 130 | setOperationAction(ISD::BlockAddress, MVT::i64, Custom); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 131 | setOperationAction(ISD::GlobalTLSAddress, MVT::i32, Custom); |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 132 | setOperationAction(ISD::GlobalTLSAddress, MVT::i64, Custom); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 133 | setOperationAction(ISD::JumpTable, MVT::i32, Custom); |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 134 | setOperationAction(ISD::JumpTable, MVT::i64, Custom); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 135 | setOperationAction(ISD::ConstantPool, MVT::i32, Custom); |
Akira Hatanaka | 620db89 | 2011-11-16 22:44:38 +0000 | [diff] [blame] | 136 | setOperationAction(ISD::ConstantPool, MVT::i64, Custom); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 137 | setOperationAction(ISD::SELECT, MVT::f32, Custom); |
| 138 | setOperationAction(ISD::SELECT, MVT::f64, Custom); |
| 139 | setOperationAction(ISD::SELECT, MVT::i32, Custom); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 140 | setOperationAction(ISD::BRCOND, MVT::Other, Custom); |
| 141 | setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32, Custom); |
Akira Hatanaka | 9388383 | 2011-12-20 23:35:46 +0000 | [diff] [blame] | 142 | setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i64, Custom); |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 143 | setOperationAction(ISD::VASTART, MVT::Other, Custom); |
| 144 | |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 145 | setOperationAction(ISD::SDIV, MVT::i32, Expand); |
| 146 | setOperationAction(ISD::SREM, MVT::i32, Expand); |
| 147 | setOperationAction(ISD::UDIV, MVT::i32, Expand); |
| 148 | setOperationAction(ISD::UREM, MVT::i32, Expand); |
Akira Hatanaka | dda4a07 | 2011-10-03 21:06:13 +0000 | [diff] [blame] | 149 | setOperationAction(ISD::SDIV, MVT::i64, Expand); |
| 150 | setOperationAction(ISD::SREM, MVT::i64, Expand); |
| 151 | setOperationAction(ISD::UDIV, MVT::i64, Expand); |
| 152 | setOperationAction(ISD::UREM, MVT::i64, Expand); |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 153 | |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 154 | // Operations not directly supported by Mips. |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 155 | setOperationAction(ISD::BR_JT, MVT::Other, Expand); |
| 156 | setOperationAction(ISD::BR_CC, MVT::Other, Expand); |
| 157 | setOperationAction(ISD::SELECT_CC, MVT::Other, Expand); |
| 158 | setOperationAction(ISD::UINT_TO_FP, MVT::i32, Expand); |
Akira Hatanaka | e1bcd6b | 2011-12-20 23:40:56 +0000 | [diff] [blame] | 159 | setOperationAction(ISD::UINT_TO_FP, MVT::i64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 160 | setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand); |
Akira Hatanaka | e1bcd6b | 2011-12-20 23:40:56 +0000 | [diff] [blame] | 161 | setOperationAction(ISD::FP_TO_UINT, MVT::i64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 162 | setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1, Expand); |
| 163 | setOperationAction(ISD::CTPOP, MVT::i32, Expand); |
Akira Hatanaka | 7f16274 | 2011-12-21 00:14:05 +0000 | [diff] [blame] | 164 | setOperationAction(ISD::CTPOP, MVT::i64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 165 | setOperationAction(ISD::CTTZ, MVT::i32, Expand); |
Akira Hatanaka | 7f16274 | 2011-12-21 00:14:05 +0000 | [diff] [blame] | 166 | setOperationAction(ISD::CTTZ, MVT::i64, Expand); |
Chandler Carruth | 63974b2 | 2011-12-13 01:56:10 +0000 | [diff] [blame] | 167 | setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i32, Expand); |
| 168 | setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i64, Expand); |
| 169 | setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i32, Expand); |
| 170 | setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 171 | setOperationAction(ISD::ROTL, MVT::i32, Expand); |
Akira Hatanaka | c7bafe9 | 2011-09-30 18:51:46 +0000 | [diff] [blame] | 172 | setOperationAction(ISD::ROTL, MVT::i64, Expand); |
Bruno Cardoso Lopes | 908b6dd | 2010-12-09 17:32:30 +0000 | [diff] [blame] | 173 | |
Akira Hatanaka | 5663344 | 2011-09-20 23:53:09 +0000 | [diff] [blame] | 174 | if (!Subtarget->hasMips32r2()) |
Bruno Cardoso Lopes | 908b6dd | 2010-12-09 17:32:30 +0000 | [diff] [blame] | 175 | setOperationAction(ISD::ROTR, MVT::i32, Expand); |
| 176 | |
Akira Hatanaka | c7bafe9 | 2011-09-30 18:51:46 +0000 | [diff] [blame] | 177 | if (!Subtarget->hasMips64r2()) |
| 178 | setOperationAction(ISD::ROTR, MVT::i64, Expand); |
| 179 | |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 180 | setOperationAction(ISD::SHL_PARTS, MVT::i32, Expand); |
| 181 | setOperationAction(ISD::SRA_PARTS, MVT::i32, Expand); |
| 182 | setOperationAction(ISD::SRL_PARTS, MVT::i32, Expand); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 183 | setOperationAction(ISD::FCOPYSIGN, MVT::f32, Custom); |
| 184 | setOperationAction(ISD::FCOPYSIGN, MVT::f64, Custom); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 185 | setOperationAction(ISD::FSIN, MVT::f32, Expand); |
Bruno Cardoso Lopes | 5d6fb5d | 2011-03-04 18:54:14 +0000 | [diff] [blame] | 186 | setOperationAction(ISD::FSIN, MVT::f64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 187 | setOperationAction(ISD::FCOS, MVT::f32, Expand); |
Bruno Cardoso Lopes | 5d6fb5d | 2011-03-04 18:54:14 +0000 | [diff] [blame] | 188 | setOperationAction(ISD::FCOS, MVT::f64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 189 | setOperationAction(ISD::FPOWI, MVT::f32, Expand); |
| 190 | setOperationAction(ISD::FPOW, MVT::f32, Expand); |
Akira Hatanaka | 46da136 | 2011-05-23 22:23:58 +0000 | [diff] [blame] | 191 | setOperationAction(ISD::FPOW, MVT::f64, Expand); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 192 | setOperationAction(ISD::FLOG, MVT::f32, Expand); |
| 193 | setOperationAction(ISD::FLOG2, MVT::f32, Expand); |
| 194 | setOperationAction(ISD::FLOG10, MVT::f32, Expand); |
| 195 | setOperationAction(ISD::FEXP, MVT::f32, Expand); |
Cameron Zwarich | 3339084 | 2011-07-08 21:39:21 +0000 | [diff] [blame] | 196 | setOperationAction(ISD::FMA, MVT::f32, Expand); |
| 197 | setOperationAction(ISD::FMA, MVT::f64, Expand); |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 198 | |
Akira Hatanaka | cf0cd80 | 2011-05-26 18:59:03 +0000 | [diff] [blame] | 199 | setOperationAction(ISD::EXCEPTIONADDR, MVT::i32, Expand); |
Akira Hatanaka | 590baca | 2012-02-02 03:13:40 +0000 | [diff] [blame] | 200 | setOperationAction(ISD::EXCEPTIONADDR, MVT::i64, Expand); |
Akira Hatanaka | cf0cd80 | 2011-05-26 18:59:03 +0000 | [diff] [blame] | 201 | setOperationAction(ISD::EHSELECTION, MVT::i32, Expand); |
Akira Hatanaka | 590baca | 2012-02-02 03:13:40 +0000 | [diff] [blame] | 202 | setOperationAction(ISD::EHSELECTION, MVT::i64, Expand); |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 203 | |
Bruno Cardoso Lopes | 954dac0 | 2011-03-09 19:22:22 +0000 | [diff] [blame] | 204 | setOperationAction(ISD::VAARG, MVT::Other, Expand); |
| 205 | setOperationAction(ISD::VACOPY, MVT::Other, Expand); |
| 206 | setOperationAction(ISD::VAEND, MVT::Other, Expand); |
| 207 | |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 208 | // Use the default for now |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 209 | setOperationAction(ISD::STACKSAVE, MVT::Other, Expand); |
| 210 | setOperationAction(ISD::STACKRESTORE, MVT::Other, Expand); |
Eli Friedman | 1464846 | 2011-07-27 22:21:52 +0000 | [diff] [blame] | 211 | |
Akira Hatanaka | db54826 | 2011-07-19 23:30:50 +0000 | [diff] [blame] | 212 | setOperationAction(ISD::MEMBARRIER, MVT::Other, Custom); |
Eli Friedman | 1464846 | 2011-07-27 22:21:52 +0000 | [diff] [blame] | 213 | setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Custom); |
Bruno Cardoso Lopes | 85e9212 | 2008-07-07 19:11:24 +0000 | [diff] [blame] | 214 | |
Eli Friedman | 4db5aca | 2011-08-29 18:23:02 +0000 | [diff] [blame] | 215 | setOperationAction(ISD::ATOMIC_LOAD, MVT::i32, Expand); |
Akira Hatanaka | 9aed504 | 2011-12-21 00:02:58 +0000 | [diff] [blame] | 216 | setOperationAction(ISD::ATOMIC_LOAD, MVT::i64, Expand); |
Eli Friedman | 4db5aca | 2011-08-29 18:23:02 +0000 | [diff] [blame] | 217 | setOperationAction(ISD::ATOMIC_STORE, MVT::i32, Expand); |
Akira Hatanaka | 9aed504 | 2011-12-21 00:02:58 +0000 | [diff] [blame] | 218 | setOperationAction(ISD::ATOMIC_STORE, MVT::i64, Expand); |
Eli Friedman | 4db5aca | 2011-08-29 18:23:02 +0000 | [diff] [blame] | 219 | |
Eli Friedman | 26689ac | 2011-08-03 21:06:02 +0000 | [diff] [blame] | 220 | setInsertFencesForAtomic(true); |
| 221 | |
Bruno Cardoso Lopes | ea9d4d6 | 2008-08-04 06:44:31 +0000 | [diff] [blame] | 222 | if (Subtarget->isSingleFloat()) |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 223 | setOperationAction(ISD::SELECT_CC, MVT::f64, Expand); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 224 | |
Bruno Cardoso Lopes | 7728f7e | 2008-07-09 05:32:22 +0000 | [diff] [blame] | 225 | if (!Subtarget->hasSEInReg()) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 226 | setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i8, Expand); |
| 227 | setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i16, Expand); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 228 | } |
| 229 | |
Akira Hatanaka | c79507a | 2011-12-21 00:20:27 +0000 | [diff] [blame] | 230 | if (!Subtarget->hasBitCount()) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 231 | setOperationAction(ISD::CTLZ, MVT::i32, Expand); |
Akira Hatanaka | c79507a | 2011-12-21 00:20:27 +0000 | [diff] [blame] | 232 | setOperationAction(ISD::CTLZ, MVT::i64, Expand); |
| 233 | } |
Bruno Cardoso Lopes | 65ad452 | 2008-08-08 06:16:31 +0000 | [diff] [blame] | 234 | |
Akira Hatanaka | c0ea043 | 2011-12-20 23:56:43 +0000 | [diff] [blame] | 235 | if (!Subtarget->hasSwap()) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 236 | setOperationAction(ISD::BSWAP, MVT::i32, Expand); |
Akira Hatanaka | c0ea043 | 2011-12-20 23:56:43 +0000 | [diff] [blame] | 237 | setOperationAction(ISD::BSWAP, MVT::i64, Expand); |
| 238 | } |
Bruno Cardoso Lopes | 739e441 | 2008-08-13 07:13:40 +0000 | [diff] [blame] | 239 | |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 240 | setTargetDAGCombine(ISD::ADDE); |
| 241 | setTargetDAGCombine(ISD::SUBE); |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 242 | setTargetDAGCombine(ISD::SDIVREM); |
| 243 | setTargetDAGCombine(ISD::UDIVREM); |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 244 | setTargetDAGCombine(ISD::SETCC); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 245 | setTargetDAGCombine(ISD::AND); |
| 246 | setTargetDAGCombine(ISD::OR); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 247 | |
Eli Friedman | fc5d305 | 2011-05-06 20:34:06 +0000 | [diff] [blame] | 248 | setMinFunctionAlignment(2); |
| 249 | |
Akira Hatanaka | 3f5b107 | 2012-02-02 03:17:04 +0000 | [diff] [blame] | 250 | setStackPointerRegisterToSaveRestore(IsN64 ? Mips::SP_64 : Mips::SP); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 251 | computeRegisterProperties(); |
Akira Hatanaka | cf0cd80 | 2011-05-26 18:59:03 +0000 | [diff] [blame] | 252 | |
Akira Hatanaka | 590baca | 2012-02-02 03:13:40 +0000 | [diff] [blame] | 253 | setExceptionPointerRegister(IsN64 ? Mips::A0_64 : Mips::A0); |
| 254 | setExceptionSelectorRegister(IsN64 ? Mips::A1_64 : Mips::A1); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 255 | } |
| 256 | |
Akira Hatanaka | 5c21c9e | 2011-08-12 21:30:06 +0000 | [diff] [blame] | 257 | bool MipsTargetLowering::allowsUnalignedMemoryAccesses(EVT VT) const { |
Akira Hatanaka | 511961a | 2011-08-17 18:49:18 +0000 | [diff] [blame] | 258 | MVT::SimpleValueType SVT = VT.getSimpleVT().SimpleTy; |
Akira Hatanaka | 7bd19bd | 2011-10-11 00:27:28 +0000 | [diff] [blame] | 259 | return SVT == MVT::i64 || SVT == MVT::i32 || SVT == MVT::i16; |
Akira Hatanaka | 5c21c9e | 2011-08-12 21:30:06 +0000 | [diff] [blame] | 260 | } |
| 261 | |
Duncan Sands | 28b77e9 | 2011-09-06 19:07:46 +0000 | [diff] [blame] | 262 | EVT MipsTargetLowering::getSetCCResultType(EVT VT) const { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 263 | return MVT::i32; |
Scott Michel | 5b8f82e | 2008-03-10 15:42:14 +0000 | [diff] [blame] | 264 | } |
| 265 | |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 266 | // SelectMadd - |
| 267 | // Transforms a subgraph in CurDAG if the following pattern is found: |
| 268 | // (addc multLo, Lo0), (adde multHi, Hi0), |
| 269 | // where, |
| 270 | // multHi/Lo: product of multiplication |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 271 | // Lo0: initial value of Lo register |
| 272 | // Hi0: initial value of Hi register |
Akira Hatanaka | 81bd78b | 2011-03-30 21:15:35 +0000 | [diff] [blame] | 273 | // Return true if pattern matching was successful. |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 274 | static bool SelectMadd(SDNode* ADDENode, SelectionDAG* CurDAG) { |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 275 | // 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] | 276 | // for the matching to be successful. |
| 277 | SDNode* ADDCNode = ADDENode->getOperand(2).getNode(); |
| 278 | |
| 279 | if (ADDCNode->getOpcode() != ISD::ADDC) |
| 280 | return false; |
| 281 | |
| 282 | SDValue MultHi = ADDENode->getOperand(0); |
| 283 | SDValue MultLo = ADDCNode->getOperand(0); |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 284 | SDNode* MultNode = MultHi.getNode(); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 285 | unsigned MultOpc = MultHi.getOpcode(); |
| 286 | |
| 287 | // MultHi and MultLo must be generated by the same node, |
| 288 | if (MultLo.getNode() != MultNode) |
| 289 | return false; |
| 290 | |
| 291 | // and it must be a multiplication. |
| 292 | if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI) |
| 293 | return false; |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 294 | |
| 295 | // MultLo amd MultHi must be the first and second output of MultNode |
| 296 | // respectively. |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 297 | if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0) |
| 298 | return false; |
| 299 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 300 | // 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] | 301 | // of the values of MultNode, in which case MultNode will be removed in later |
| 302 | // phases. |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 303 | // If there exist users other than ADDENode or ADDCNode, this function returns |
| 304 | // 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] | 305 | // 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] | 306 | // produced. |
| 307 | if (!MultHi.hasOneUse() || !MultLo.hasOneUse()) |
| 308 | return false; |
| 309 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 310 | SDValue Chain = CurDAG->getEntryNode(); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 311 | DebugLoc dl = ADDENode->getDebugLoc(); |
| 312 | |
| 313 | // create MipsMAdd(u) node |
| 314 | MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MAddu : MipsISD::MAdd; |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 315 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 316 | SDValue MAdd = CurDAG->getNode(MultOpc, dl, MVT::Glue, |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 317 | MultNode->getOperand(0),// Factor 0 |
| 318 | MultNode->getOperand(1),// Factor 1 |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 319 | ADDCNode->getOperand(1),// Lo0 |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 320 | ADDENode->getOperand(1));// Hi0 |
| 321 | |
| 322 | // create CopyFromReg nodes |
| 323 | SDValue CopyFromLo = CurDAG->getCopyFromReg(Chain, dl, Mips::LO, MVT::i32, |
| 324 | MAdd); |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 325 | SDValue CopyFromHi = CurDAG->getCopyFromReg(CopyFromLo.getValue(1), dl, |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 326 | Mips::HI, MVT::i32, |
| 327 | CopyFromLo.getValue(2)); |
| 328 | |
| 329 | // replace uses of adde and addc here |
| 330 | if (!SDValue(ADDCNode, 0).use_empty()) |
| 331 | CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDCNode, 0), CopyFromLo); |
| 332 | |
| 333 | if (!SDValue(ADDENode, 0).use_empty()) |
| 334 | CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDENode, 0), CopyFromHi); |
| 335 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 336 | return true; |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 337 | } |
| 338 | |
| 339 | // SelectMsub - |
| 340 | // Transforms a subgraph in CurDAG if the following pattern is found: |
| 341 | // (addc Lo0, multLo), (sube Hi0, multHi), |
| 342 | // where, |
| 343 | // multHi/Lo: product of multiplication |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 344 | // Lo0: initial value of Lo register |
| 345 | // Hi0: initial value of Hi register |
Akira Hatanaka | 81bd78b | 2011-03-30 21:15:35 +0000 | [diff] [blame] | 346 | // Return true if pattern matching was successful. |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 347 | static bool SelectMsub(SDNode* SUBENode, SelectionDAG* CurDAG) { |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 348 | // 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] | 349 | // for the matching to be successful. |
| 350 | SDNode* SUBCNode = SUBENode->getOperand(2).getNode(); |
| 351 | |
| 352 | if (SUBCNode->getOpcode() != ISD::SUBC) |
| 353 | return false; |
| 354 | |
| 355 | SDValue MultHi = SUBENode->getOperand(1); |
| 356 | SDValue MultLo = SUBCNode->getOperand(1); |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 357 | SDNode* MultNode = MultHi.getNode(); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 358 | unsigned MultOpc = MultHi.getOpcode(); |
| 359 | |
| 360 | // MultHi and MultLo must be generated by the same node, |
| 361 | if (MultLo.getNode() != MultNode) |
| 362 | return false; |
| 363 | |
| 364 | // and it must be a multiplication. |
| 365 | if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI) |
| 366 | return false; |
| 367 | |
| 368 | // MultLo amd MultHi must be the first and second output of MultNode |
| 369 | // respectively. |
| 370 | if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0) |
| 371 | return false; |
| 372 | |
| 373 | // Transform this to a MSUB only if SUBENode and SUBCNode are the only users |
| 374 | // of the values of MultNode, in which case MultNode will be removed in later |
| 375 | // phases. |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 376 | // If there exist users other than SUBENode or SUBCNode, this function returns |
| 377 | // 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] | 378 | // instruction node rather than a pair of MULT and MSUB instructions being |
| 379 | // produced. |
| 380 | if (!MultHi.hasOneUse() || !MultLo.hasOneUse()) |
| 381 | return false; |
| 382 | |
| 383 | SDValue Chain = CurDAG->getEntryNode(); |
| 384 | DebugLoc dl = SUBENode->getDebugLoc(); |
| 385 | |
| 386 | // create MipsSub(u) node |
| 387 | MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MSubu : MipsISD::MSub; |
| 388 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 389 | SDValue MSub = CurDAG->getNode(MultOpc, dl, MVT::Glue, |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 390 | MultNode->getOperand(0),// Factor 0 |
| 391 | MultNode->getOperand(1),// Factor 1 |
| 392 | SUBCNode->getOperand(0),// Lo0 |
| 393 | SUBENode->getOperand(0));// Hi0 |
| 394 | |
| 395 | // create CopyFromReg nodes |
| 396 | SDValue CopyFromLo = CurDAG->getCopyFromReg(Chain, dl, Mips::LO, MVT::i32, |
| 397 | MSub); |
| 398 | SDValue CopyFromHi = CurDAG->getCopyFromReg(CopyFromLo.getValue(1), dl, |
| 399 | Mips::HI, MVT::i32, |
| 400 | CopyFromLo.getValue(2)); |
| 401 | |
| 402 | // replace uses of sube and subc here |
| 403 | if (!SDValue(SUBCNode, 0).use_empty()) |
| 404 | CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBCNode, 0), CopyFromLo); |
| 405 | |
| 406 | if (!SDValue(SUBENode, 0).use_empty()) |
| 407 | CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBENode, 0), CopyFromHi); |
| 408 | |
| 409 | return true; |
| 410 | } |
| 411 | |
| 412 | static SDValue PerformADDECombine(SDNode *N, SelectionDAG& DAG, |
| 413 | TargetLowering::DAGCombinerInfo &DCI, |
| 414 | const MipsSubtarget* Subtarget) { |
| 415 | if (DCI.isBeforeLegalize()) |
| 416 | return SDValue(); |
| 417 | |
Akira Hatanaka | e184fec | 2011-11-11 04:18:21 +0000 | [diff] [blame] | 418 | if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 && |
| 419 | SelectMadd(N, &DAG)) |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 420 | return SDValue(N, 0); |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 421 | |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 422 | return SDValue(); |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 423 | } |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 424 | |
| 425 | static SDValue PerformSUBECombine(SDNode *N, SelectionDAG& DAG, |
| 426 | TargetLowering::DAGCombinerInfo &DCI, |
| 427 | const MipsSubtarget* Subtarget) { |
| 428 | if (DCI.isBeforeLegalize()) |
| 429 | return SDValue(); |
| 430 | |
Akira Hatanaka | e184fec | 2011-11-11 04:18:21 +0000 | [diff] [blame] | 431 | if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 && |
| 432 | SelectMsub(N, &DAG)) |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 433 | return SDValue(N, 0); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 434 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 435 | return SDValue(); |
| 436 | } |
| 437 | |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 438 | static SDValue PerformDivRemCombine(SDNode *N, SelectionDAG& DAG, |
| 439 | TargetLowering::DAGCombinerInfo &DCI, |
| 440 | const MipsSubtarget* Subtarget) { |
| 441 | if (DCI.isBeforeLegalizeOps()) |
| 442 | return SDValue(); |
| 443 | |
Akira Hatanaka | dda4a07 | 2011-10-03 21:06:13 +0000 | [diff] [blame] | 444 | EVT Ty = N->getValueType(0); |
| 445 | unsigned LO = (Ty == MVT::i32) ? Mips::LO : Mips::LO64; |
| 446 | unsigned HI = (Ty == MVT::i32) ? Mips::HI : Mips::HI64; |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 447 | unsigned opc = N->getOpcode() == ISD::SDIVREM ? MipsISD::DivRem : |
| 448 | MipsISD::DivRemU; |
| 449 | DebugLoc dl = N->getDebugLoc(); |
| 450 | |
| 451 | SDValue DivRem = DAG.getNode(opc, dl, MVT::Glue, |
| 452 | N->getOperand(0), N->getOperand(1)); |
| 453 | SDValue InChain = DAG.getEntryNode(); |
| 454 | SDValue InGlue = DivRem; |
| 455 | |
| 456 | // insert MFLO |
| 457 | if (N->hasAnyUseOfValue(0)) { |
Akira Hatanaka | dda4a07 | 2011-10-03 21:06:13 +0000 | [diff] [blame] | 458 | SDValue CopyFromLo = DAG.getCopyFromReg(InChain, dl, LO, Ty, |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 459 | InGlue); |
| 460 | DAG.ReplaceAllUsesOfValueWith(SDValue(N, 0), CopyFromLo); |
| 461 | InChain = CopyFromLo.getValue(1); |
| 462 | InGlue = CopyFromLo.getValue(2); |
| 463 | } |
| 464 | |
| 465 | // insert MFHI |
| 466 | if (N->hasAnyUseOfValue(1)) { |
| 467 | SDValue CopyFromHi = DAG.getCopyFromReg(InChain, dl, |
Akira Hatanaka | dda4a07 | 2011-10-03 21:06:13 +0000 | [diff] [blame] | 468 | HI, Ty, InGlue); |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 469 | DAG.ReplaceAllUsesOfValueWith(SDValue(N, 1), CopyFromHi); |
| 470 | } |
| 471 | |
| 472 | return SDValue(); |
| 473 | } |
| 474 | |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 475 | static Mips::CondCode FPCondCCodeToFCC(ISD::CondCode CC) { |
| 476 | switch (CC) { |
| 477 | default: llvm_unreachable("Unknown fp condition code!"); |
| 478 | case ISD::SETEQ: |
| 479 | case ISD::SETOEQ: return Mips::FCOND_OEQ; |
| 480 | case ISD::SETUNE: return Mips::FCOND_UNE; |
| 481 | case ISD::SETLT: |
| 482 | case ISD::SETOLT: return Mips::FCOND_OLT; |
| 483 | case ISD::SETGT: |
| 484 | case ISD::SETOGT: return Mips::FCOND_OGT; |
| 485 | case ISD::SETLE: |
| 486 | case ISD::SETOLE: return Mips::FCOND_OLE; |
| 487 | case ISD::SETGE: |
| 488 | case ISD::SETOGE: return Mips::FCOND_OGE; |
| 489 | case ISD::SETULT: return Mips::FCOND_ULT; |
| 490 | case ISD::SETULE: return Mips::FCOND_ULE; |
| 491 | case ISD::SETUGT: return Mips::FCOND_UGT; |
| 492 | case ISD::SETUGE: return Mips::FCOND_UGE; |
| 493 | case ISD::SETUO: return Mips::FCOND_UN; |
| 494 | case ISD::SETO: return Mips::FCOND_OR; |
| 495 | case ISD::SETNE: |
| 496 | case ISD::SETONE: return Mips::FCOND_ONE; |
| 497 | case ISD::SETUEQ: return Mips::FCOND_UEQ; |
| 498 | } |
| 499 | } |
| 500 | |
| 501 | |
| 502 | // Returns true if condition code has to be inverted. |
| 503 | static bool InvertFPCondCode(Mips::CondCode CC) { |
| 504 | if (CC >= Mips::FCOND_F && CC <= Mips::FCOND_NGT) |
| 505 | return false; |
| 506 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 507 | assert((CC >= Mips::FCOND_T && CC <= Mips::FCOND_GT) && |
| 508 | "Illegal Condition Code"); |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 509 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 510 | return true; |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 511 | } |
| 512 | |
| 513 | // Creates and returns an FPCmp node from a setcc node. |
| 514 | // Returns Op if setcc is not a floating point comparison. |
| 515 | static SDValue CreateFPCmp(SelectionDAG& DAG, const SDValue& Op) { |
| 516 | // must be a SETCC node |
| 517 | if (Op.getOpcode() != ISD::SETCC) |
| 518 | return Op; |
| 519 | |
| 520 | SDValue LHS = Op.getOperand(0); |
| 521 | |
| 522 | if (!LHS.getValueType().isFloatingPoint()) |
| 523 | return Op; |
| 524 | |
| 525 | SDValue RHS = Op.getOperand(1); |
| 526 | DebugLoc dl = Op.getDebugLoc(); |
| 527 | |
Akira Hatanaka | 0bf3dfb | 2011-04-15 21:00:26 +0000 | [diff] [blame] | 528 | // Assume the 3rd operand is a CondCodeSDNode. Add code to check the type of |
| 529 | // node if necessary. |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 530 | ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(2))->get(); |
| 531 | |
| 532 | return DAG.getNode(MipsISD::FPCmp, dl, MVT::Glue, LHS, RHS, |
| 533 | DAG.getConstant(FPCondCCodeToFCC(CC), MVT::i32)); |
| 534 | } |
| 535 | |
| 536 | // Creates and returns a CMovFPT/F node. |
| 537 | static SDValue CreateCMovFP(SelectionDAG& DAG, SDValue Cond, SDValue True, |
| 538 | SDValue False, DebugLoc DL) { |
| 539 | bool invert = InvertFPCondCode((Mips::CondCode) |
| 540 | cast<ConstantSDNode>(Cond.getOperand(2)) |
| 541 | ->getSExtValue()); |
| 542 | |
| 543 | return DAG.getNode((invert ? MipsISD::CMovFP_F : MipsISD::CMovFP_T), DL, |
| 544 | True.getValueType(), True, False, Cond); |
| 545 | } |
| 546 | |
| 547 | static SDValue PerformSETCCCombine(SDNode *N, SelectionDAG& DAG, |
| 548 | TargetLowering::DAGCombinerInfo &DCI, |
| 549 | const MipsSubtarget* Subtarget) { |
| 550 | if (DCI.isBeforeLegalizeOps()) |
| 551 | return SDValue(); |
| 552 | |
| 553 | SDValue Cond = CreateFPCmp(DAG, SDValue(N, 0)); |
| 554 | |
| 555 | if (Cond.getOpcode() != MipsISD::FPCmp) |
| 556 | return SDValue(); |
| 557 | |
| 558 | SDValue True = DAG.getConstant(1, MVT::i32); |
| 559 | SDValue False = DAG.getConstant(0, MVT::i32); |
| 560 | |
| 561 | return CreateCMovFP(DAG, Cond, True, False, N->getDebugLoc()); |
| 562 | } |
| 563 | |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 564 | static SDValue PerformANDCombine(SDNode *N, SelectionDAG& DAG, |
| 565 | TargetLowering::DAGCombinerInfo &DCI, |
| 566 | const MipsSubtarget* Subtarget) { |
| 567 | // Pattern match EXT. |
| 568 | // $dst = and ((sra or srl) $src , pos), (2**size - 1) |
| 569 | // => ext $dst, $src, size, pos |
Akira Hatanaka | 5663344 | 2011-09-20 23:53:09 +0000 | [diff] [blame] | 570 | if (DCI.isBeforeLegalizeOps() || !Subtarget->hasMips32r2()) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 571 | return SDValue(); |
| 572 | |
| 573 | SDValue ShiftRight = N->getOperand(0), Mask = N->getOperand(1); |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 574 | unsigned ShiftRightOpc = ShiftRight.getOpcode(); |
| 575 | |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 576 | // Op's first operand must be a shift right. |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 577 | if (ShiftRightOpc != ISD::SRA && ShiftRightOpc != ISD::SRL) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 578 | return SDValue(); |
| 579 | |
| 580 | // The second operand of the shift must be an immediate. |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 581 | ConstantSDNode *CN; |
| 582 | if (!(CN = dyn_cast<ConstantSDNode>(ShiftRight.getOperand(1)))) |
| 583 | return SDValue(); |
| 584 | |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 585 | uint64_t Pos = CN->getZExtValue(); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 586 | uint64_t SMPos, SMSize; |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 587 | |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 588 | // Op's second operand must be a shifted mask. |
| 589 | if (!(CN = dyn_cast<ConstantSDNode>(Mask)) || |
Akira Hatanaka | 854a7db | 2011-08-19 22:59:00 +0000 | [diff] [blame] | 590 | !IsShiftedMask(CN->getZExtValue(), SMPos, SMSize)) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 591 | return SDValue(); |
| 592 | |
| 593 | // Return if the shifted mask does not start at bit 0 or the sum of its size |
| 594 | // and Pos exceeds the word's size. |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 595 | EVT ValTy = N->getValueType(0); |
| 596 | if (SMPos != 0 || Pos + SMSize > ValTy.getSizeInBits()) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 597 | return SDValue(); |
| 598 | |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 599 | return DAG.getNode(MipsISD::Ext, N->getDebugLoc(), ValTy, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 600 | ShiftRight.getOperand(0), DAG.getConstant(Pos, MVT::i32), |
Akira Hatanaka | 667645f | 2011-08-17 22:59:46 +0000 | [diff] [blame] | 601 | DAG.getConstant(SMSize, MVT::i32)); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 602 | } |
| 603 | |
| 604 | static SDValue PerformORCombine(SDNode *N, SelectionDAG& DAG, |
| 605 | TargetLowering::DAGCombinerInfo &DCI, |
| 606 | const MipsSubtarget* Subtarget) { |
| 607 | // Pattern match INS. |
| 608 | // $dst = or (and $src1 , mask0), (and (shl $src, pos), mask1), |
| 609 | // where mask1 = (2**size - 1) << pos, mask0 = ~mask1 |
| 610 | // => ins $dst, $src, size, pos, $src1 |
Akira Hatanaka | 5663344 | 2011-09-20 23:53:09 +0000 | [diff] [blame] | 611 | if (DCI.isBeforeLegalizeOps() || !Subtarget->hasMips32r2()) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 612 | return SDValue(); |
| 613 | |
| 614 | SDValue And0 = N->getOperand(0), And1 = N->getOperand(1); |
| 615 | uint64_t SMPos0, SMSize0, SMPos1, SMSize1; |
| 616 | ConstantSDNode *CN; |
| 617 | |
| 618 | // See if Op's first operand matches (and $src1 , mask0). |
| 619 | if (And0.getOpcode() != ISD::AND) |
| 620 | return SDValue(); |
| 621 | |
| 622 | if (!(CN = dyn_cast<ConstantSDNode>(And0.getOperand(1))) || |
Akira Hatanaka | 854a7db | 2011-08-19 22:59:00 +0000 | [diff] [blame] | 623 | !IsShiftedMask(~CN->getSExtValue(), SMPos0, SMSize0)) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 624 | return SDValue(); |
| 625 | |
| 626 | // See if Op's second operand matches (and (shl $src, pos), mask1). |
| 627 | if (And1.getOpcode() != ISD::AND) |
| 628 | return SDValue(); |
| 629 | |
| 630 | if (!(CN = dyn_cast<ConstantSDNode>(And1.getOperand(1))) || |
Akira Hatanaka | 854a7db | 2011-08-19 22:59:00 +0000 | [diff] [blame] | 631 | !IsShiftedMask(CN->getZExtValue(), SMPos1, SMSize1)) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 632 | return SDValue(); |
| 633 | |
| 634 | // The shift masks must have the same position and size. |
| 635 | if (SMPos0 != SMPos1 || SMSize0 != SMSize1) |
| 636 | return SDValue(); |
| 637 | |
| 638 | SDValue Shl = And1.getOperand(0); |
| 639 | if (Shl.getOpcode() != ISD::SHL) |
| 640 | return SDValue(); |
| 641 | |
| 642 | if (!(CN = dyn_cast<ConstantSDNode>(Shl.getOperand(1)))) |
| 643 | return SDValue(); |
| 644 | |
| 645 | unsigned Shamt = CN->getZExtValue(); |
| 646 | |
| 647 | // Return if the shift amount and the first bit position of mask are not the |
| 648 | // same. |
Akira Hatanaka | d6bc523 | 2011-12-05 21:26:34 +0000 | [diff] [blame] | 649 | EVT ValTy = N->getValueType(0); |
| 650 | if ((Shamt != SMPos0) || (SMPos0 + SMSize0 > ValTy.getSizeInBits())) |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 651 | return SDValue(); |
| 652 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 653 | return DAG.getNode(MipsISD::Ins, N->getDebugLoc(), ValTy, Shl.getOperand(0), |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 654 | DAG.getConstant(SMPos0, MVT::i32), |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 655 | DAG.getConstant(SMSize0, MVT::i32), And0.getOperand(0)); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 656 | } |
| 657 | |
Bruno Cardoso Lopes | 8e826e6 | 2011-02-10 18:05:10 +0000 | [diff] [blame] | 658 | SDValue MipsTargetLowering::PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 659 | const { |
| 660 | SelectionDAG &DAG = DCI.DAG; |
| 661 | unsigned opc = N->getOpcode(); |
| 662 | |
| 663 | switch (opc) { |
| 664 | default: break; |
| 665 | case ISD::ADDE: |
| 666 | return PerformADDECombine(N, DAG, DCI, Subtarget); |
| 667 | case ISD::SUBE: |
| 668 | return PerformSUBECombine(N, DAG, DCI, Subtarget); |
Bruno Cardoso Lopes | 38b5e86 | 2011-03-04 21:03:24 +0000 | [diff] [blame] | 669 | case ISD::SDIVREM: |
| 670 | case ISD::UDIVREM: |
| 671 | return PerformDivRemCombine(N, DAG, DCI, Subtarget); |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 672 | case ISD::SETCC: |
| 673 | return PerformSETCCCombine(N, DAG, DCI, Subtarget); |
Akira Hatanaka | 77b85b6 | 2011-08-17 17:45:08 +0000 | [diff] [blame] | 674 | case ISD::AND: |
| 675 | return PerformANDCombine(N, DAG, DCI, Subtarget); |
| 676 | case ISD::OR: |
| 677 | return PerformORCombine(N, DAG, DCI, Subtarget); |
Bruno Cardoso Lopes | 8be7611 | 2011-01-18 19:29:17 +0000 | [diff] [blame] | 678 | } |
| 679 | |
| 680 | return SDValue(); |
| 681 | } |
| 682 | |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 683 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 684 | LowerOperation(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 685 | { |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 686 | switch (Op.getOpcode()) |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 687 | { |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 688 | case ISD::BRCOND: return LowerBRCOND(Op, DAG); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 689 | case ISD::ConstantPool: return LowerConstantPool(Op, DAG); |
| 690 | case ISD::DYNAMIC_STACKALLOC: return LowerDYNAMIC_STACKALLOC(Op, DAG); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 691 | case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG); |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 692 | case ISD::BlockAddress: return LowerBlockAddress(Op, DAG); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 693 | case ISD::GlobalTLSAddress: return LowerGlobalTLSAddress(Op, DAG); |
| 694 | case ISD::JumpTable: return LowerJumpTable(Op, DAG); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 695 | case ISD::SELECT: return LowerSELECT(Op, DAG); |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 696 | case ISD::VASTART: return LowerVASTART(Op, DAG); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 697 | case ISD::FCOPYSIGN: return LowerFCOPYSIGN(Op, DAG); |
Akira Hatanaka | 2e59147 | 2011-06-02 00:24:44 +0000 | [diff] [blame] | 698 | case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG); |
Akira Hatanaka | db54826 | 2011-07-19 23:30:50 +0000 | [diff] [blame] | 699 | case ISD::MEMBARRIER: return LowerMEMBARRIER(Op, DAG); |
Eli Friedman | 1464846 | 2011-07-27 22:21:52 +0000 | [diff] [blame] | 700 | case ISD::ATOMIC_FENCE: return LowerATOMIC_FENCE(Op, DAG); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 701 | } |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 702 | return SDValue(); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 703 | } |
| 704 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 705 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 706 | // Lower helper functions |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 707 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 708 | |
| 709 | // AddLiveIn - This helper function adds the specified physical register to the |
| 710 | // MachineFunction as a live in value. It also creates a corresponding |
| 711 | // virtual register for it. |
| 712 | static unsigned |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 713 | AddLiveIn(MachineFunction &MF, unsigned PReg, TargetRegisterClass *RC) |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 714 | { |
| 715 | assert(RC->contains(PReg) && "Not the correct regclass!"); |
Chris Lattner | 84bc542 | 2007-12-31 04:13:23 +0000 | [diff] [blame] | 716 | unsigned VReg = MF.getRegInfo().createVirtualRegister(RC); |
| 717 | MF.getRegInfo().addLiveIn(PReg, VReg); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 718 | return VReg; |
| 719 | } |
| 720 | |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 721 | // Get fp branch code (not opcode) from condition code. |
| 722 | static Mips::FPBranchCode GetFPBranchCodeFromCond(Mips::CondCode CC) { |
| 723 | if (CC >= Mips::FCOND_F && CC <= Mips::FCOND_NGT) |
| 724 | return Mips::BRANCH_T; |
| 725 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 726 | assert((CC >= Mips::FCOND_T && CC <= Mips::FCOND_GT) && |
| 727 | "Invalid CondCode."); |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 728 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 729 | return Mips::BRANCH_F; |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 730 | } |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 731 | |
Akira Hatanaka | 8ae330a | 2011-10-17 18:53:29 +0000 | [diff] [blame] | 732 | /* |
Akira Hatanaka | 14487d4 | 2011-06-07 19:28:39 +0000 | [diff] [blame] | 733 | static MachineBasicBlock* ExpandCondMov(MachineInstr *MI, MachineBasicBlock *BB, |
| 734 | DebugLoc dl, |
| 735 | const MipsSubtarget* Subtarget, |
| 736 | const TargetInstrInfo *TII, |
| 737 | bool isFPCmp, unsigned Opc) { |
| 738 | // There is no need to expand CMov instructions if target has |
| 739 | // conditional moves. |
| 740 | if (Subtarget->hasCondMov()) |
| 741 | return BB; |
| 742 | |
| 743 | // To "insert" a SELECT_CC instruction, we actually have to insert the |
| 744 | // diamond control-flow pattern. The incoming instruction knows the |
| 745 | // destination vreg to set, the condition code register to branch on, the |
| 746 | // true/false values to select between, and a branch opcode to use. |
| 747 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 748 | MachineFunction::iterator It = BB; |
| 749 | ++It; |
| 750 | |
| 751 | // thisMBB: |
| 752 | // ... |
| 753 | // TrueVal = ... |
| 754 | // setcc r1, r2, r3 |
| 755 | // bNE r1, r0, copy1MBB |
| 756 | // fallthrough --> copy0MBB |
| 757 | MachineBasicBlock *thisMBB = BB; |
| 758 | MachineFunction *F = BB->getParent(); |
| 759 | MachineBasicBlock *copy0MBB = F->CreateMachineBasicBlock(LLVM_BB); |
| 760 | MachineBasicBlock *sinkMBB = F->CreateMachineBasicBlock(LLVM_BB); |
| 761 | F->insert(It, copy0MBB); |
| 762 | F->insert(It, sinkMBB); |
| 763 | |
| 764 | // Transfer the remainder of BB and its successor edges to sinkMBB. |
| 765 | sinkMBB->splice(sinkMBB->begin(), BB, |
| 766 | llvm::next(MachineBasicBlock::iterator(MI)), |
| 767 | BB->end()); |
| 768 | sinkMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 769 | |
| 770 | // Next, add the true and fallthrough blocks as its successors. |
| 771 | BB->addSuccessor(copy0MBB); |
| 772 | BB->addSuccessor(sinkMBB); |
| 773 | |
| 774 | // Emit the right instruction according to the type of the operands compared |
| 775 | if (isFPCmp) |
| 776 | BuildMI(BB, dl, TII->get(Opc)).addMBB(sinkMBB); |
| 777 | else |
| 778 | BuildMI(BB, dl, TII->get(Opc)).addReg(MI->getOperand(2).getReg()) |
| 779 | .addReg(Mips::ZERO).addMBB(sinkMBB); |
| 780 | |
| 781 | // copy0MBB: |
| 782 | // %FalseValue = ... |
| 783 | // # fallthrough to sinkMBB |
| 784 | BB = copy0MBB; |
| 785 | |
| 786 | // Update machine-CFG edges |
| 787 | BB->addSuccessor(sinkMBB); |
| 788 | |
| 789 | // sinkMBB: |
| 790 | // %Result = phi [ %TrueValue, thisMBB ], [ %FalseValue, copy0MBB ] |
| 791 | // ... |
| 792 | BB = sinkMBB; |
| 793 | |
| 794 | if (isFPCmp) |
| 795 | BuildMI(*BB, BB->begin(), dl, |
| 796 | TII->get(Mips::PHI), MI->getOperand(0).getReg()) |
| 797 | .addReg(MI->getOperand(2).getReg()).addMBB(thisMBB) |
| 798 | .addReg(MI->getOperand(1).getReg()).addMBB(copy0MBB); |
| 799 | else |
| 800 | BuildMI(*BB, BB->begin(), dl, |
| 801 | TII->get(Mips::PHI), MI->getOperand(0).getReg()) |
| 802 | .addReg(MI->getOperand(3).getReg()).addMBB(thisMBB) |
| 803 | .addReg(MI->getOperand(1).getReg()).addMBB(copy0MBB); |
| 804 | |
| 805 | MI->eraseFromParent(); // The pseudo instruction is gone now. |
| 806 | return BB; |
| 807 | } |
Akira Hatanaka | 8ae330a | 2011-10-17 18:53:29 +0000 | [diff] [blame] | 808 | */ |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 809 | MachineBasicBlock * |
| 810 | MipsTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI, |
Dan Gohman | af1d8ca | 2010-05-01 00:01:06 +0000 | [diff] [blame] | 811 | MachineBasicBlock *BB) const { |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 812 | switch (MI->getOpcode()) { |
Akira Hatanaka | 14487d4 | 2011-06-07 19:28:39 +0000 | [diff] [blame] | 813 | default: |
| 814 | assert(false && "Unexpected instr type to insert"); |
| 815 | return NULL; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 816 | case Mips::ATOMIC_LOAD_ADD_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 817 | case Mips::ATOMIC_LOAD_ADD_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 818 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::ADDu); |
| 819 | case Mips::ATOMIC_LOAD_ADD_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 820 | case Mips::ATOMIC_LOAD_ADD_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 821 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::ADDu); |
| 822 | case Mips::ATOMIC_LOAD_ADD_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 823 | case Mips::ATOMIC_LOAD_ADD_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 824 | return EmitAtomicBinary(MI, BB, 4, Mips::ADDu); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 825 | case Mips::ATOMIC_LOAD_ADD_I64: |
| 826 | case Mips::ATOMIC_LOAD_ADD_I64_P8: |
| 827 | return EmitAtomicBinary(MI, BB, 8, Mips::DADDu); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 828 | |
| 829 | case Mips::ATOMIC_LOAD_AND_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 830 | case Mips::ATOMIC_LOAD_AND_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 831 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::AND); |
| 832 | case Mips::ATOMIC_LOAD_AND_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 833 | case Mips::ATOMIC_LOAD_AND_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 834 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::AND); |
| 835 | case Mips::ATOMIC_LOAD_AND_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 836 | case Mips::ATOMIC_LOAD_AND_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 837 | return EmitAtomicBinary(MI, BB, 4, Mips::AND); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 838 | case Mips::ATOMIC_LOAD_AND_I64: |
| 839 | case Mips::ATOMIC_LOAD_AND_I64_P8: |
Akira Hatanaka | 7386612 | 2011-11-12 02:38:12 +0000 | [diff] [blame] | 840 | return EmitAtomicBinary(MI, BB, 8, Mips::AND64); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 841 | |
| 842 | case Mips::ATOMIC_LOAD_OR_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 843 | case Mips::ATOMIC_LOAD_OR_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 844 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::OR); |
| 845 | case Mips::ATOMIC_LOAD_OR_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 846 | case Mips::ATOMIC_LOAD_OR_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 847 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::OR); |
| 848 | case Mips::ATOMIC_LOAD_OR_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 849 | case Mips::ATOMIC_LOAD_OR_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 850 | return EmitAtomicBinary(MI, BB, 4, Mips::OR); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 851 | case Mips::ATOMIC_LOAD_OR_I64: |
| 852 | case Mips::ATOMIC_LOAD_OR_I64_P8: |
| 853 | return EmitAtomicBinary(MI, BB, 8, Mips::OR64); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 854 | |
| 855 | case Mips::ATOMIC_LOAD_XOR_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 856 | case Mips::ATOMIC_LOAD_XOR_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 857 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::XOR); |
| 858 | case Mips::ATOMIC_LOAD_XOR_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 859 | case Mips::ATOMIC_LOAD_XOR_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 860 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::XOR); |
| 861 | case Mips::ATOMIC_LOAD_XOR_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 862 | case Mips::ATOMIC_LOAD_XOR_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 863 | return EmitAtomicBinary(MI, BB, 4, Mips::XOR); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 864 | case Mips::ATOMIC_LOAD_XOR_I64: |
| 865 | case Mips::ATOMIC_LOAD_XOR_I64_P8: |
| 866 | return EmitAtomicBinary(MI, BB, 8, Mips::XOR64); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 867 | |
| 868 | case Mips::ATOMIC_LOAD_NAND_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 869 | case Mips::ATOMIC_LOAD_NAND_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 870 | return EmitAtomicBinaryPartword(MI, BB, 1, 0, true); |
| 871 | case Mips::ATOMIC_LOAD_NAND_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 872 | case Mips::ATOMIC_LOAD_NAND_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 873 | return EmitAtomicBinaryPartword(MI, BB, 2, 0, true); |
| 874 | case Mips::ATOMIC_LOAD_NAND_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 875 | case Mips::ATOMIC_LOAD_NAND_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 876 | return EmitAtomicBinary(MI, BB, 4, 0, true); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 877 | case Mips::ATOMIC_LOAD_NAND_I64: |
| 878 | case Mips::ATOMIC_LOAD_NAND_I64_P8: |
| 879 | return EmitAtomicBinary(MI, BB, 8, 0, true); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 880 | |
| 881 | case Mips::ATOMIC_LOAD_SUB_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 882 | case Mips::ATOMIC_LOAD_SUB_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 883 | return EmitAtomicBinaryPartword(MI, BB, 1, Mips::SUBu); |
| 884 | case Mips::ATOMIC_LOAD_SUB_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 885 | case Mips::ATOMIC_LOAD_SUB_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 886 | return EmitAtomicBinaryPartword(MI, BB, 2, Mips::SUBu); |
| 887 | case Mips::ATOMIC_LOAD_SUB_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 888 | case Mips::ATOMIC_LOAD_SUB_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 889 | return EmitAtomicBinary(MI, BB, 4, Mips::SUBu); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 890 | case Mips::ATOMIC_LOAD_SUB_I64: |
| 891 | case Mips::ATOMIC_LOAD_SUB_I64_P8: |
| 892 | return EmitAtomicBinary(MI, BB, 8, Mips::DSUBu); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 893 | |
| 894 | case Mips::ATOMIC_SWAP_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 895 | case Mips::ATOMIC_SWAP_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 896 | return EmitAtomicBinaryPartword(MI, BB, 1, 0); |
| 897 | case Mips::ATOMIC_SWAP_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 898 | case Mips::ATOMIC_SWAP_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 899 | return EmitAtomicBinaryPartword(MI, BB, 2, 0); |
| 900 | case Mips::ATOMIC_SWAP_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 901 | case Mips::ATOMIC_SWAP_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 902 | return EmitAtomicBinary(MI, BB, 4, 0); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 903 | case Mips::ATOMIC_SWAP_I64: |
| 904 | case Mips::ATOMIC_SWAP_I64_P8: |
| 905 | return EmitAtomicBinary(MI, BB, 8, 0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 906 | |
| 907 | case Mips::ATOMIC_CMP_SWAP_I8: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 908 | case Mips::ATOMIC_CMP_SWAP_I8_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 909 | return EmitAtomicCmpSwapPartword(MI, BB, 1); |
| 910 | case Mips::ATOMIC_CMP_SWAP_I16: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 911 | case Mips::ATOMIC_CMP_SWAP_I16_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 912 | return EmitAtomicCmpSwapPartword(MI, BB, 2); |
| 913 | case Mips::ATOMIC_CMP_SWAP_I32: |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 914 | case Mips::ATOMIC_CMP_SWAP_I32_P8: |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 915 | return EmitAtomicCmpSwap(MI, BB, 4); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 916 | case Mips::ATOMIC_CMP_SWAP_I64: |
| 917 | case Mips::ATOMIC_CMP_SWAP_I64_P8: |
| 918 | return EmitAtomicCmpSwap(MI, BB, 8); |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 919 | } |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 920 | } |
| 921 | |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 922 | // This function also handles Mips::ATOMIC_SWAP_I32 (when BinOpcode == 0), and |
| 923 | // Mips::ATOMIC_LOAD_NAND_I32 (when Nand == true) |
| 924 | MachineBasicBlock * |
| 925 | MipsTargetLowering::EmitAtomicBinary(MachineInstr *MI, MachineBasicBlock *BB, |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 926 | unsigned Size, unsigned BinOpcode, |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 927 | bool Nand) const { |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 928 | assert((Size == 4 || Size == 8) && "Unsupported size for EmitAtomicBinary."); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 929 | |
| 930 | MachineFunction *MF = BB->getParent(); |
| 931 | MachineRegisterInfo &RegInfo = MF->getRegInfo(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 932 | const TargetRegisterClass *RC = getRegClassFor(MVT::getIntegerVT(Size * 8)); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 933 | const TargetInstrInfo *TII = getTargetMachine().getInstrInfo(); |
| 934 | DebugLoc dl = MI->getDebugLoc(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 935 | unsigned LL, SC, AND, NOR, ZERO, BEQ; |
| 936 | |
| 937 | if (Size == 4) { |
| 938 | LL = IsN64 ? Mips::LL_P8 : Mips::LL; |
| 939 | SC = IsN64 ? Mips::SC_P8 : Mips::SC; |
| 940 | AND = Mips::AND; |
| 941 | NOR = Mips::NOR; |
| 942 | ZERO = Mips::ZERO; |
| 943 | BEQ = Mips::BEQ; |
| 944 | } |
| 945 | else { |
| 946 | LL = IsN64 ? Mips::LLD_P8 : Mips::LLD; |
| 947 | SC = IsN64 ? Mips::SCD_P8 : Mips::SCD; |
| 948 | AND = Mips::AND64; |
| 949 | NOR = Mips::NOR64; |
| 950 | ZERO = Mips::ZERO_64; |
| 951 | BEQ = Mips::BEQ64; |
| 952 | } |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 953 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 954 | unsigned OldVal = MI->getOperand(0).getReg(); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 955 | unsigned Ptr = MI->getOperand(1).getReg(); |
| 956 | unsigned Incr = MI->getOperand(2).getReg(); |
| 957 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 958 | unsigned StoreVal = RegInfo.createVirtualRegister(RC); |
| 959 | unsigned AndRes = RegInfo.createVirtualRegister(RC); |
| 960 | unsigned Success = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 961 | |
| 962 | // insert new blocks after the current block |
| 963 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 964 | MachineBasicBlock *loopMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 965 | MachineBasicBlock *exitMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 966 | MachineFunction::iterator It = BB; |
| 967 | ++It; |
| 968 | MF->insert(It, loopMBB); |
| 969 | MF->insert(It, exitMBB); |
| 970 | |
| 971 | // Transfer the remainder of BB and its successor edges to exitMBB. |
| 972 | exitMBB->splice(exitMBB->begin(), BB, |
| 973 | llvm::next(MachineBasicBlock::iterator(MI)), |
| 974 | BB->end()); |
| 975 | exitMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 976 | |
| 977 | // thisMBB: |
| 978 | // ... |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 979 | // fallthrough --> loopMBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 980 | BB->addSuccessor(loopMBB); |
Akira Hatanaka | 81b4411 | 2011-07-19 17:09:53 +0000 | [diff] [blame] | 981 | loopMBB->addSuccessor(loopMBB); |
| 982 | loopMBB->addSuccessor(exitMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 983 | |
| 984 | // loopMBB: |
| 985 | // ll oldval, 0(ptr) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 986 | // <binop> storeval, oldval, incr |
| 987 | // sc success, storeval, 0(ptr) |
| 988 | // beq success, $0, loopMBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 989 | BB = loopMBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 990 | BuildMI(BB, dl, TII->get(LL), OldVal).addReg(Ptr).addImm(0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 991 | if (Nand) { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 992 | // and andres, oldval, incr |
| 993 | // nor storeval, $0, andres |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 994 | BuildMI(BB, dl, TII->get(AND), AndRes).addReg(OldVal).addReg(Incr); |
| 995 | BuildMI(BB, dl, TII->get(NOR), StoreVal).addReg(ZERO).addReg(AndRes); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 996 | } else if (BinOpcode) { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 997 | // <binop> storeval, oldval, incr |
| 998 | BuildMI(BB, dl, TII->get(BinOpcode), StoreVal).addReg(OldVal).addReg(Incr); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 999 | } else { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1000 | StoreVal = Incr; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1001 | } |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1002 | BuildMI(BB, dl, TII->get(SC), Success).addReg(StoreVal).addReg(Ptr).addImm(0); |
| 1003 | 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] | 1004 | |
| 1005 | MI->eraseFromParent(); // The instruction is gone now. |
| 1006 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1007 | return exitMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1008 | } |
| 1009 | |
| 1010 | MachineBasicBlock * |
| 1011 | MipsTargetLowering::EmitAtomicBinaryPartword(MachineInstr *MI, |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1012 | MachineBasicBlock *BB, |
| 1013 | unsigned Size, unsigned BinOpcode, |
| 1014 | bool Nand) const { |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1015 | assert((Size == 1 || Size == 2) && |
| 1016 | "Unsupported size for EmitAtomicBinaryPartial."); |
| 1017 | |
| 1018 | MachineFunction *MF = BB->getParent(); |
| 1019 | MachineRegisterInfo &RegInfo = MF->getRegInfo(); |
| 1020 | const TargetRegisterClass *RC = getRegClassFor(MVT::i32); |
| 1021 | const TargetInstrInfo *TII = getTargetMachine().getInstrInfo(); |
| 1022 | DebugLoc dl = MI->getDebugLoc(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1023 | unsigned LL = IsN64 ? Mips::LL_P8 : Mips::LL; |
| 1024 | unsigned SC = IsN64 ? Mips::SC_P8 : Mips::SC; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1025 | |
| 1026 | unsigned Dest = MI->getOperand(0).getReg(); |
| 1027 | unsigned Ptr = MI->getOperand(1).getReg(); |
| 1028 | unsigned Incr = MI->getOperand(2).getReg(); |
| 1029 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1030 | unsigned AlignedAddr = RegInfo.createVirtualRegister(RC); |
| 1031 | unsigned ShiftAmt = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1032 | unsigned Mask = RegInfo.createVirtualRegister(RC); |
| 1033 | unsigned Mask2 = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1034 | unsigned NewVal = RegInfo.createVirtualRegister(RC); |
| 1035 | unsigned OldVal = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1036 | unsigned Incr2 = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1037 | unsigned MaskLSB2 = RegInfo.createVirtualRegister(RC); |
| 1038 | unsigned PtrLSB2 = RegInfo.createVirtualRegister(RC); |
| 1039 | unsigned MaskUpper = RegInfo.createVirtualRegister(RC); |
| 1040 | unsigned AndRes = RegInfo.createVirtualRegister(RC); |
| 1041 | unsigned BinOpRes = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | bdd83fe | 2011-07-19 20:56:53 +0000 | [diff] [blame] | 1042 | unsigned MaskedOldVal0 = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1043 | unsigned StoreVal = RegInfo.createVirtualRegister(RC); |
| 1044 | unsigned MaskedOldVal1 = RegInfo.createVirtualRegister(RC); |
| 1045 | unsigned SrlRes = RegInfo.createVirtualRegister(RC); |
| 1046 | unsigned SllRes = RegInfo.createVirtualRegister(RC); |
| 1047 | unsigned Success = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1048 | |
| 1049 | // insert new blocks after the current block |
| 1050 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 1051 | MachineBasicBlock *loopMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1052 | MachineBasicBlock *sinkMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1053 | MachineBasicBlock *exitMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1054 | MachineFunction::iterator It = BB; |
| 1055 | ++It; |
| 1056 | MF->insert(It, loopMBB); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1057 | MF->insert(It, sinkMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1058 | MF->insert(It, exitMBB); |
| 1059 | |
| 1060 | // Transfer the remainder of BB and its successor edges to exitMBB. |
| 1061 | exitMBB->splice(exitMBB->begin(), BB, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1062 | llvm::next(MachineBasicBlock::iterator(MI)), BB->end()); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1063 | exitMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 1064 | |
Akira Hatanaka | 81b4411 | 2011-07-19 17:09:53 +0000 | [diff] [blame] | 1065 | BB->addSuccessor(loopMBB); |
| 1066 | loopMBB->addSuccessor(loopMBB); |
| 1067 | loopMBB->addSuccessor(sinkMBB); |
| 1068 | sinkMBB->addSuccessor(exitMBB); |
| 1069 | |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1070 | // thisMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1071 | // addiu masklsb2,$0,-4 # 0xfffffffc |
| 1072 | // and alignedaddr,ptr,masklsb2 |
| 1073 | // andi ptrlsb2,ptr,3 |
| 1074 | // sll shiftamt,ptrlsb2,3 |
| 1075 | // ori maskupper,$0,255 # 0xff |
| 1076 | // sll mask,maskupper,shiftamt |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1077 | // nor mask2,$0,mask |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1078 | // sll incr2,incr,shiftamt |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1079 | |
| 1080 | int64_t MaskImm = (Size == 1) ? 255 : 65535; |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1081 | BuildMI(BB, dl, TII->get(Mips::ADDiu), MaskLSB2) |
| 1082 | .addReg(Mips::ZERO).addImm(-4); |
| 1083 | BuildMI(BB, dl, TII->get(Mips::AND), AlignedAddr) |
| 1084 | .addReg(Ptr).addReg(MaskLSB2); |
| 1085 | BuildMI(BB, dl, TII->get(Mips::ANDi), PtrLSB2).addReg(Ptr).addImm(3); |
| 1086 | BuildMI(BB, dl, TII->get(Mips::SLL), ShiftAmt).addReg(PtrLSB2).addImm(3); |
| 1087 | BuildMI(BB, dl, TII->get(Mips::ORi), MaskUpper) |
| 1088 | .addReg(Mips::ZERO).addImm(MaskImm); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1089 | BuildMI(BB, dl, TII->get(Mips::SLLV), Mask) |
| 1090 | .addReg(ShiftAmt).addReg(MaskUpper); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1091 | 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] | 1092 | 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] | 1093 | |
Akira Hatanaka | 0d7d0b5 | 2011-07-18 18:52:12 +0000 | [diff] [blame] | 1094 | // atomic.load.binop |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1095 | // loopMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1096 | // ll oldval,0(alignedaddr) |
| 1097 | // binop binopres,oldval,incr2 |
| 1098 | // and newval,binopres,mask |
| 1099 | // and maskedoldval0,oldval,mask2 |
| 1100 | // or storeval,maskedoldval0,newval |
| 1101 | // sc success,storeval,0(alignedaddr) |
| 1102 | // beq success,$0,loopMBB |
| 1103 | |
Akira Hatanaka | 0d7d0b5 | 2011-07-18 18:52:12 +0000 | [diff] [blame] | 1104 | // atomic.swap |
| 1105 | // loopMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1106 | // ll oldval,0(alignedaddr) |
Akira Hatanaka | 70564a9 | 2011-07-19 18:14:26 +0000 | [diff] [blame] | 1107 | // and newval,incr2,mask |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1108 | // and maskedoldval0,oldval,mask2 |
| 1109 | // or storeval,maskedoldval0,newval |
| 1110 | // sc success,storeval,0(alignedaddr) |
| 1111 | // beq success,$0,loopMBB |
Akira Hatanaka | 0d7d0b5 | 2011-07-18 18:52:12 +0000 | [diff] [blame] | 1112 | |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1113 | BB = loopMBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1114 | BuildMI(BB, dl, TII->get(LL), OldVal).addReg(AlignedAddr).addImm(0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1115 | if (Nand) { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1116 | // and andres, oldval, incr2 |
| 1117 | // nor binopres, $0, andres |
| 1118 | // and newval, binopres, mask |
| 1119 | BuildMI(BB, dl, TII->get(Mips::AND), AndRes).addReg(OldVal).addReg(Incr2); |
| 1120 | BuildMI(BB, dl, TII->get(Mips::NOR), BinOpRes) |
| 1121 | .addReg(Mips::ZERO).addReg(AndRes); |
| 1122 | 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] | 1123 | } else if (BinOpcode) { |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1124 | // <binop> binopres, oldval, incr2 |
| 1125 | // and newval, binopres, mask |
| 1126 | BuildMI(BB, dl, TII->get(BinOpcode), BinOpRes).addReg(OldVal).addReg(Incr2); |
| 1127 | BuildMI(BB, dl, TII->get(Mips::AND), NewVal).addReg(BinOpRes).addReg(Mask); |
Akira Hatanaka | 70564a9 | 2011-07-19 18:14:26 +0000 | [diff] [blame] | 1128 | } else {// atomic.swap |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1129 | // and newval, incr2, mask |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1130 | BuildMI(BB, dl, TII->get(Mips::AND), NewVal).addReg(Incr2).addReg(Mask); |
Akira Hatanaka | 70564a9 | 2011-07-19 18:14:26 +0000 | [diff] [blame] | 1131 | } |
| 1132 | |
Akira Hatanaka | bdd83fe | 2011-07-19 20:56:53 +0000 | [diff] [blame] | 1133 | BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal0) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1134 | .addReg(OldVal).addReg(Mask2); |
| 1135 | BuildMI(BB, dl, TII->get(Mips::OR), StoreVal) |
Akira Hatanaka | bdd83fe | 2011-07-19 20:56:53 +0000 | [diff] [blame] | 1136 | .addReg(MaskedOldVal0).addReg(NewVal); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1137 | BuildMI(BB, dl, TII->get(SC), Success) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1138 | .addReg(StoreVal).addReg(AlignedAddr).addImm(0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1139 | BuildMI(BB, dl, TII->get(Mips::BEQ)) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1140 | .addReg(Success).addReg(Mips::ZERO).addMBB(loopMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1141 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1142 | // sinkMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1143 | // and maskedoldval1,oldval,mask |
| 1144 | // srl srlres,maskedoldval1,shiftamt |
| 1145 | // sll sllres,srlres,24 |
| 1146 | // sra dest,sllres,24 |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1147 | BB = sinkMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1148 | int64_t ShiftImm = (Size == 1) ? 24 : 16; |
Akira Hatanaka | a308c67 | 2011-07-19 03:14:58 +0000 | [diff] [blame] | 1149 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1150 | BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal1) |
| 1151 | .addReg(OldVal).addReg(Mask); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1152 | BuildMI(BB, dl, TII->get(Mips::SRLV), SrlRes) |
| 1153 | .addReg(ShiftAmt).addReg(MaskedOldVal1); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1154 | BuildMI(BB, dl, TII->get(Mips::SLL), SllRes) |
| 1155 | .addReg(SrlRes).addImm(ShiftImm); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1156 | BuildMI(BB, dl, TII->get(Mips::SRA), Dest) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1157 | .addReg(SllRes).addImm(ShiftImm); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1158 | |
| 1159 | MI->eraseFromParent(); // The instruction is gone now. |
| 1160 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1161 | return exitMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1162 | } |
| 1163 | |
| 1164 | MachineBasicBlock * |
| 1165 | MipsTargetLowering::EmitAtomicCmpSwap(MachineInstr *MI, |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1166 | MachineBasicBlock *BB, |
| 1167 | unsigned Size) const { |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1168 | assert((Size == 4 || Size == 8) && "Unsupported size for EmitAtomicCmpSwap."); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1169 | |
| 1170 | MachineFunction *MF = BB->getParent(); |
| 1171 | MachineRegisterInfo &RegInfo = MF->getRegInfo(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1172 | const TargetRegisterClass *RC = getRegClassFor(MVT::getIntegerVT(Size * 8)); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1173 | const TargetInstrInfo *TII = getTargetMachine().getInstrInfo(); |
| 1174 | DebugLoc dl = MI->getDebugLoc(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1175 | unsigned LL, SC, ZERO, BNE, BEQ; |
| 1176 | |
| 1177 | if (Size == 4) { |
| 1178 | LL = IsN64 ? Mips::LL_P8 : Mips::LL; |
| 1179 | SC = IsN64 ? Mips::SC_P8 : Mips::SC; |
| 1180 | ZERO = Mips::ZERO; |
| 1181 | BNE = Mips::BNE; |
| 1182 | BEQ = Mips::BEQ; |
| 1183 | } |
| 1184 | else { |
| 1185 | LL = IsN64 ? Mips::LLD_P8 : Mips::LLD; |
| 1186 | SC = IsN64 ? Mips::SCD_P8 : Mips::SCD; |
| 1187 | ZERO = Mips::ZERO_64; |
| 1188 | BNE = Mips::BNE64; |
| 1189 | BEQ = Mips::BEQ64; |
| 1190 | } |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1191 | |
| 1192 | unsigned Dest = MI->getOperand(0).getReg(); |
| 1193 | unsigned Ptr = MI->getOperand(1).getReg(); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1194 | unsigned OldVal = MI->getOperand(2).getReg(); |
| 1195 | unsigned NewVal = MI->getOperand(3).getReg(); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1196 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1197 | unsigned Success = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1198 | |
| 1199 | // insert new blocks after the current block |
| 1200 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 1201 | MachineBasicBlock *loop1MBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1202 | MachineBasicBlock *loop2MBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1203 | MachineBasicBlock *exitMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1204 | MachineFunction::iterator It = BB; |
| 1205 | ++It; |
| 1206 | MF->insert(It, loop1MBB); |
| 1207 | MF->insert(It, loop2MBB); |
| 1208 | MF->insert(It, exitMBB); |
| 1209 | |
| 1210 | // Transfer the remainder of BB and its successor edges to exitMBB. |
| 1211 | exitMBB->splice(exitMBB->begin(), BB, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1212 | llvm::next(MachineBasicBlock::iterator(MI)), BB->end()); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1213 | exitMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 1214 | |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1215 | // thisMBB: |
| 1216 | // ... |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1217 | // fallthrough --> loop1MBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1218 | BB->addSuccessor(loop1MBB); |
Akira Hatanaka | 81b4411 | 2011-07-19 17:09:53 +0000 | [diff] [blame] | 1219 | loop1MBB->addSuccessor(exitMBB); |
| 1220 | loop1MBB->addSuccessor(loop2MBB); |
| 1221 | loop2MBB->addSuccessor(loop1MBB); |
| 1222 | loop2MBB->addSuccessor(exitMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1223 | |
| 1224 | // loop1MBB: |
| 1225 | // ll dest, 0(ptr) |
| 1226 | // bne dest, oldval, exitMBB |
| 1227 | BB = loop1MBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1228 | BuildMI(BB, dl, TII->get(LL), Dest).addReg(Ptr).addImm(0); |
| 1229 | BuildMI(BB, dl, TII->get(BNE)) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1230 | .addReg(Dest).addReg(OldVal).addMBB(exitMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1231 | |
| 1232 | // loop2MBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1233 | // sc success, newval, 0(ptr) |
| 1234 | // beq success, $0, loop1MBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1235 | BB = loop2MBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1236 | BuildMI(BB, dl, TII->get(SC), Success) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1237 | .addReg(NewVal).addReg(Ptr).addImm(0); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1238 | BuildMI(BB, dl, TII->get(BEQ)) |
| 1239 | .addReg(Success).addReg(ZERO).addMBB(loop1MBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1240 | |
| 1241 | MI->eraseFromParent(); // The instruction is gone now. |
| 1242 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1243 | return exitMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1244 | } |
| 1245 | |
| 1246 | MachineBasicBlock * |
| 1247 | MipsTargetLowering::EmitAtomicCmpSwapPartword(MachineInstr *MI, |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1248 | MachineBasicBlock *BB, |
| 1249 | unsigned Size) const { |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1250 | assert((Size == 1 || Size == 2) && |
| 1251 | "Unsupported size for EmitAtomicCmpSwapPartial."); |
| 1252 | |
| 1253 | MachineFunction *MF = BB->getParent(); |
| 1254 | MachineRegisterInfo &RegInfo = MF->getRegInfo(); |
| 1255 | const TargetRegisterClass *RC = getRegClassFor(MVT::i32); |
| 1256 | const TargetInstrInfo *TII = getTargetMachine().getInstrInfo(); |
| 1257 | DebugLoc dl = MI->getDebugLoc(); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1258 | unsigned LL = IsN64 ? Mips::LL_P8 : Mips::LL; |
| 1259 | unsigned SC = IsN64 ? Mips::SC_P8 : Mips::SC; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1260 | |
| 1261 | unsigned Dest = MI->getOperand(0).getReg(); |
| 1262 | unsigned Ptr = MI->getOperand(1).getReg(); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1263 | unsigned CmpVal = MI->getOperand(2).getReg(); |
| 1264 | unsigned NewVal = MI->getOperand(3).getReg(); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1265 | |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1266 | unsigned AlignedAddr = RegInfo.createVirtualRegister(RC); |
| 1267 | unsigned ShiftAmt = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1268 | unsigned Mask = RegInfo.createVirtualRegister(RC); |
| 1269 | unsigned Mask2 = RegInfo.createVirtualRegister(RC); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1270 | unsigned ShiftedCmpVal = RegInfo.createVirtualRegister(RC); |
| 1271 | unsigned OldVal = RegInfo.createVirtualRegister(RC); |
| 1272 | unsigned MaskedOldVal0 = RegInfo.createVirtualRegister(RC); |
| 1273 | unsigned ShiftedNewVal = RegInfo.createVirtualRegister(RC); |
| 1274 | unsigned MaskLSB2 = RegInfo.createVirtualRegister(RC); |
| 1275 | unsigned PtrLSB2 = RegInfo.createVirtualRegister(RC); |
| 1276 | unsigned MaskUpper = RegInfo.createVirtualRegister(RC); |
| 1277 | unsigned MaskedCmpVal = RegInfo.createVirtualRegister(RC); |
| 1278 | unsigned MaskedNewVal = RegInfo.createVirtualRegister(RC); |
| 1279 | unsigned MaskedOldVal1 = RegInfo.createVirtualRegister(RC); |
| 1280 | unsigned StoreVal = RegInfo.createVirtualRegister(RC); |
| 1281 | unsigned SrlRes = RegInfo.createVirtualRegister(RC); |
| 1282 | unsigned SllRes = RegInfo.createVirtualRegister(RC); |
| 1283 | unsigned Success = RegInfo.createVirtualRegister(RC); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1284 | |
| 1285 | // insert new blocks after the current block |
| 1286 | const BasicBlock *LLVM_BB = BB->getBasicBlock(); |
| 1287 | MachineBasicBlock *loop1MBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1288 | MachineBasicBlock *loop2MBB = MF->CreateMachineBasicBlock(LLVM_BB); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1289 | MachineBasicBlock *sinkMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1290 | MachineBasicBlock *exitMBB = MF->CreateMachineBasicBlock(LLVM_BB); |
| 1291 | MachineFunction::iterator It = BB; |
| 1292 | ++It; |
| 1293 | MF->insert(It, loop1MBB); |
| 1294 | MF->insert(It, loop2MBB); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1295 | MF->insert(It, sinkMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1296 | MF->insert(It, exitMBB); |
| 1297 | |
| 1298 | // Transfer the remainder of BB and its successor edges to exitMBB. |
| 1299 | exitMBB->splice(exitMBB->begin(), BB, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1300 | llvm::next(MachineBasicBlock::iterator(MI)), BB->end()); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1301 | exitMBB->transferSuccessorsAndUpdatePHIs(BB); |
| 1302 | |
Akira Hatanaka | 81b4411 | 2011-07-19 17:09:53 +0000 | [diff] [blame] | 1303 | BB->addSuccessor(loop1MBB); |
| 1304 | loop1MBB->addSuccessor(sinkMBB); |
| 1305 | loop1MBB->addSuccessor(loop2MBB); |
| 1306 | loop2MBB->addSuccessor(loop1MBB); |
| 1307 | loop2MBB->addSuccessor(sinkMBB); |
| 1308 | sinkMBB->addSuccessor(exitMBB); |
| 1309 | |
Akira Hatanaka | 70564a9 | 2011-07-19 18:14:26 +0000 | [diff] [blame] | 1310 | // FIXME: computation of newval2 can be moved to loop2MBB. |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1311 | // thisMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1312 | // addiu masklsb2,$0,-4 # 0xfffffffc |
| 1313 | // and alignedaddr,ptr,masklsb2 |
| 1314 | // andi ptrlsb2,ptr,3 |
| 1315 | // sll shiftamt,ptrlsb2,3 |
| 1316 | // ori maskupper,$0,255 # 0xff |
| 1317 | // sll mask,maskupper,shiftamt |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1318 | // nor mask2,$0,mask |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1319 | // andi maskedcmpval,cmpval,255 |
| 1320 | // sll shiftedcmpval,maskedcmpval,shiftamt |
| 1321 | // andi maskednewval,newval,255 |
| 1322 | // sll shiftednewval,maskednewval,shiftamt |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1323 | int64_t MaskImm = (Size == 1) ? 255 : 65535; |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1324 | BuildMI(BB, dl, TII->get(Mips::ADDiu), MaskLSB2) |
| 1325 | .addReg(Mips::ZERO).addImm(-4); |
| 1326 | BuildMI(BB, dl, TII->get(Mips::AND), AlignedAddr) |
| 1327 | .addReg(Ptr).addReg(MaskLSB2); |
| 1328 | BuildMI(BB, dl, TII->get(Mips::ANDi), PtrLSB2).addReg(Ptr).addImm(3); |
| 1329 | BuildMI(BB, dl, TII->get(Mips::SLL), ShiftAmt).addReg(PtrLSB2).addImm(3); |
| 1330 | BuildMI(BB, dl, TII->get(Mips::ORi), MaskUpper) |
| 1331 | .addReg(Mips::ZERO).addImm(MaskImm); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1332 | BuildMI(BB, dl, TII->get(Mips::SLLV), Mask) |
| 1333 | .addReg(ShiftAmt).addReg(MaskUpper); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1334 | 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] | 1335 | BuildMI(BB, dl, TII->get(Mips::ANDi), MaskedCmpVal) |
| 1336 | .addReg(CmpVal).addImm(MaskImm); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1337 | BuildMI(BB, dl, TII->get(Mips::SLLV), ShiftedCmpVal) |
| 1338 | .addReg(ShiftAmt).addReg(MaskedCmpVal); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1339 | BuildMI(BB, dl, TII->get(Mips::ANDi), MaskedNewVal) |
| 1340 | .addReg(NewVal).addImm(MaskImm); |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1341 | BuildMI(BB, dl, TII->get(Mips::SLLV), ShiftedNewVal) |
| 1342 | .addReg(ShiftAmt).addReg(MaskedNewVal); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1343 | |
| 1344 | // loop1MBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1345 | // ll oldval,0(alginedaddr) |
| 1346 | // and maskedoldval0,oldval,mask |
| 1347 | // bne maskedoldval0,shiftedcmpval,sinkMBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1348 | BB = loop1MBB; |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1349 | BuildMI(BB, dl, TII->get(LL), OldVal).addReg(AlignedAddr).addImm(0); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1350 | BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal0) |
| 1351 | .addReg(OldVal).addReg(Mask); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1352 | BuildMI(BB, dl, TII->get(Mips::BNE)) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1353 | .addReg(MaskedOldVal0).addReg(ShiftedCmpVal).addMBB(sinkMBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1354 | |
| 1355 | // loop2MBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1356 | // and maskedoldval1,oldval,mask2 |
| 1357 | // or storeval,maskedoldval1,shiftednewval |
| 1358 | // sc success,storeval,0(alignedaddr) |
| 1359 | // beq success,$0,loop1MBB |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1360 | BB = loop2MBB; |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1361 | BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal1) |
| 1362 | .addReg(OldVal).addReg(Mask2); |
| 1363 | BuildMI(BB, dl, TII->get(Mips::OR), StoreVal) |
| 1364 | .addReg(MaskedOldVal1).addReg(ShiftedNewVal); |
Akira Hatanaka | 5906806 | 2011-11-11 04:14:30 +0000 | [diff] [blame] | 1365 | BuildMI(BB, dl, TII->get(SC), Success) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1366 | .addReg(StoreVal).addReg(AlignedAddr).addImm(0); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1367 | BuildMI(BB, dl, TII->get(Mips::BEQ)) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1368 | .addReg(Success).addReg(Mips::ZERO).addMBB(loop1MBB); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1369 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1370 | // sinkMBB: |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1371 | // srl srlres,maskedoldval0,shiftamt |
| 1372 | // sll sllres,srlres,24 |
| 1373 | // sra dest,sllres,24 |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1374 | BB = sinkMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1375 | int64_t ShiftImm = (Size == 1) ? 24 : 16; |
Akira Hatanaka | a308c67 | 2011-07-19 03:14:58 +0000 | [diff] [blame] | 1376 | |
Akira Hatanaka | cc7ecc7 | 2011-07-19 20:34:00 +0000 | [diff] [blame] | 1377 | BuildMI(BB, dl, TII->get(Mips::SRLV), SrlRes) |
| 1378 | .addReg(ShiftAmt).addReg(MaskedOldVal0); |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1379 | BuildMI(BB, dl, TII->get(Mips::SLL), SllRes) |
| 1380 | .addReg(SrlRes).addImm(ShiftImm); |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1381 | BuildMI(BB, dl, TII->get(Mips::SRA), Dest) |
Akira Hatanaka | 4061da1 | 2011-07-19 20:11:17 +0000 | [diff] [blame] | 1382 | .addReg(SllRes).addImm(ShiftImm); |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1383 | |
| 1384 | MI->eraseFromParent(); // The instruction is gone now. |
| 1385 | |
Akira Hatanaka | 939ece1 | 2011-07-19 03:42:13 +0000 | [diff] [blame] | 1386 | return exitMBB; |
Bruno Cardoso Lopes | 4e694c9 | 2011-05-31 02:54:07 +0000 | [diff] [blame] | 1387 | } |
| 1388 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1389 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 1390 | // Misc Lower Operation implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1391 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | d3bdf19 | 2009-05-27 17:23:44 +0000 | [diff] [blame] | 1392 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1393 | LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1394 | { |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 1395 | MachineFunction &MF = DAG.getMachineFunction(); |
| 1396 | MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>(); |
Akira Hatanaka | c742e4f | 2011-11-11 04:06:38 +0000 | [diff] [blame] | 1397 | unsigned SP = IsN64 ? Mips::SP_64 : Mips::SP; |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 1398 | |
| 1399 | assert(getTargetMachine().getFrameLowering()->getStackAlignment() >= |
Akira Hatanaka | 053546c | 2011-05-25 02:20:00 +0000 | [diff] [blame] | 1400 | cast<ConstantSDNode>(Op.getOperand(2).getNode())->getZExtValue() && |
| 1401 | "Cannot lower if the alignment of the allocated space is larger than \ |
| 1402 | that of the stack."); |
| 1403 | |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1404 | SDValue Chain = Op.getOperand(0); |
| 1405 | SDValue Size = Op.getOperand(1); |
Dale Johannesen | a05dca4 | 2009-02-04 23:02:30 +0000 | [diff] [blame] | 1406 | DebugLoc dl = Op.getDebugLoc(); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1407 | |
| 1408 | // Get a reference from Mips stack pointer |
Akira Hatanaka | c742e4f | 2011-11-11 04:06:38 +0000 | [diff] [blame] | 1409 | SDValue StackPointer = DAG.getCopyFromReg(Chain, dl, SP, getPointerTy()); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1410 | |
| 1411 | // Subtract the dynamic size from the actual stack size to |
| 1412 | // obtain the new stack size. |
Akira Hatanaka | c742e4f | 2011-11-11 04:06:38 +0000 | [diff] [blame] | 1413 | SDValue Sub = DAG.getNode(ISD::SUB, dl, getPointerTy(), StackPointer, Size); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1414 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1415 | // The Sub result contains the new stack start address, so it |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1416 | // must be placed in the stack pointer register. |
Akira Hatanaka | c742e4f | 2011-11-11 04:06:38 +0000 | [diff] [blame] | 1417 | Chain = DAG.getCopyToReg(StackPointer.getValue(1), dl, SP, Sub, SDValue()); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1418 | |
| 1419 | // This node always has two return values: a new stack pointer |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1420 | // value and a chain |
Akira Hatanaka | c742e4f | 2011-11-11 04:06:38 +0000 | [diff] [blame] | 1421 | SDVTList VTLs = DAG.getVTList(getPointerTy(), MVT::Other); |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 1422 | SDValue Ptr = DAG.getFrameIndex(MipsFI->getDynAllocFI(), getPointerTy()); |
| 1423 | SDValue Ops[] = { Chain, Ptr, Chain.getValue(1) }; |
| 1424 | |
| 1425 | return DAG.getNode(MipsISD::DynAlloc, dl, VTLs, Ops, 3); |
Bruno Cardoso Lopes | 7da151c | 2008-08-07 19:08:11 +0000 | [diff] [blame] | 1426 | } |
| 1427 | |
| 1428 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1429 | LowerBRCOND(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 1430 | { |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1431 | // 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] | 1432 | // the block to branch to if the condition is true. |
| 1433 | SDValue Chain = Op.getOperand(0); |
| 1434 | SDValue Dest = Op.getOperand(2); |
Dale Johannesen | de06470 | 2009-02-06 21:50:26 +0000 | [diff] [blame] | 1435 | DebugLoc dl = Op.getDebugLoc(); |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 1436 | |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1437 | SDValue CondRes = CreateFPCmp(DAG, Op.getOperand(1)); |
| 1438 | |
Chris Lattner | 7a2bdde | 2011-04-15 05:18:47 +0000 | [diff] [blame] | 1439 | // Return if flag is not set by a floating point comparison. |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1440 | if (CondRes.getOpcode() != MipsISD::FPCmp) |
Bruno Cardoso Lopes | 4b877ca | 2008-07-30 17:06:13 +0000 | [diff] [blame] | 1441 | return Op; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1442 | |
Bruno Cardoso Lopes | 7728377 | 2008-07-31 18:31:28 +0000 | [diff] [blame] | 1443 | SDValue CCNode = CondRes.getOperand(2); |
Dan Gohman | f5aeb1a | 2008-09-12 16:56:44 +0000 | [diff] [blame] | 1444 | Mips::CondCode CC = |
| 1445 | (Mips::CondCode)cast<ConstantSDNode>(CCNode)->getZExtValue(); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1446 | SDValue BrCode = DAG.getConstant(GetFPBranchCodeFromCond(CC), MVT::i32); |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 1447 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1448 | return DAG.getNode(MipsISD::FPBrcond, dl, Op.getValueType(), Chain, BrCode, |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1449 | Dest, CondRes); |
Bruno Cardoso Lopes | 85e31e3 | 2008-07-28 19:11:24 +0000 | [diff] [blame] | 1450 | } |
| 1451 | |
| 1452 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1453 | LowerSELECT(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 1454 | { |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1455 | SDValue Cond = CreateFPCmp(DAG, Op.getOperand(0)); |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 1456 | |
Chris Lattner | 7a2bdde | 2011-04-15 05:18:47 +0000 | [diff] [blame] | 1457 | // Return if flag is not set by a floating point comparison. |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1458 | if (Cond.getOpcode() != MipsISD::FPCmp) |
| 1459 | return Op; |
Bruno Cardoso Lopes | 739e441 | 2008-08-13 07:13:40 +0000 | [diff] [blame] | 1460 | |
Akira Hatanaka | 1d6b38d | 2011-03-31 18:26:17 +0000 | [diff] [blame] | 1461 | return CreateCMovFP(DAG, Cond, Op.getOperand(1), Op.getOperand(2), |
| 1462 | Op.getDebugLoc()); |
Bruno Cardoso Lopes | 6d399bd | 2008-07-29 19:05:28 +0000 | [diff] [blame] | 1463 | } |
| 1464 | |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1465 | SDValue MipsTargetLowering::LowerGlobalAddress(SDValue Op, |
| 1466 | SelectionDAG &DAG) const { |
Dale Johannesen | de06470 | 2009-02-06 21:50:26 +0000 | [diff] [blame] | 1467 | // FIXME there isn't actually debug info here |
Dale Johannesen | 33c960f | 2009-02-04 20:06:27 +0000 | [diff] [blame] | 1468 | DebugLoc dl = Op.getDebugLoc(); |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1469 | const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal(); |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1470 | |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1471 | if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64) { |
Chris Lattner | e3736f8 | 2009-08-13 05:41:27 +0000 | [diff] [blame] | 1472 | SDVTList VTs = DAG.getVTList(MVT::i32); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1473 | |
Chris Lattner | b71b909 | 2009-08-13 06:28:06 +0000 | [diff] [blame] | 1474 | MipsTargetObjectFile &TLOF = (MipsTargetObjectFile&)getObjFileLowering(); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1475 | |
Chris Lattner | e3736f8 | 2009-08-13 05:41:27 +0000 | [diff] [blame] | 1476 | // %gp_rel relocation |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1477 | if (TLOF.IsGlobalInSmallSection(GV, getTargetMachine())) { |
| 1478 | SDValue GA = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0, |
Bruno Cardoso Lopes | c517cb0 | 2009-09-01 17:27:58 +0000 | [diff] [blame] | 1479 | MipsII::MO_GPREL); |
Chris Lattner | e3736f8 | 2009-08-13 05:41:27 +0000 | [diff] [blame] | 1480 | SDValue GPRelNode = DAG.getNode(MipsISD::GPRel, dl, VTs, &GA, 1); |
| 1481 | SDValue GOT = DAG.getGLOBAL_OFFSET_TABLE(MVT::i32); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1482 | return DAG.getNode(ISD::ADD, dl, MVT::i32, GOT, GPRelNode); |
Chris Lattner | e3736f8 | 2009-08-13 05:41:27 +0000 | [diff] [blame] | 1483 | } |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1484 | // %hi/%lo relocation |
Akira Hatanaka | e2e436a | 2011-04-01 21:41:06 +0000 | [diff] [blame] | 1485 | SDValue GAHi = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0, |
| 1486 | MipsII::MO_ABS_HI); |
| 1487 | SDValue GALo = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0, |
| 1488 | MipsII::MO_ABS_LO); |
| 1489 | SDValue HiPart = DAG.getNode(MipsISD::Hi, dl, VTs, &GAHi, 1); |
| 1490 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, GALo); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 1491 | return DAG.getNode(ISD::ADD, dl, MVT::i32, HiPart, Lo); |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1492 | } |
| 1493 | |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1494 | EVT ValTy = Op.getValueType(); |
| 1495 | bool HasGotOfst = (GV->hasInternalLinkage() || |
| 1496 | (GV->hasLocalLinkage() && !isa<Function>(GV))); |
| 1497 | unsigned GotFlag = IsN64 ? |
| 1498 | (HasGotOfst ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT_DISP) : |
Bruno Cardoso Lopes | e3d3572 | 2011-12-07 00:28:57 +0000 | [diff] [blame] | 1499 | (HasGotOfst ? MipsII::MO_GOT : MipsII::MO_GOT16); |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1500 | SDValue GA = DAG.getTargetGlobalAddress(GV, dl, ValTy, 0, GotFlag); |
Akira Hatanaka | 6df7e23 | 2011-12-09 01:53:17 +0000 | [diff] [blame] | 1501 | GA = DAG.getNode(MipsISD::Wrapper, dl, ValTy, GA); |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1502 | SDValue ResNode = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), GA, |
| 1503 | MachinePointerInfo(), false, false, false, 0); |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1504 | // On functions and global targets not internal linked only |
| 1505 | // a load from got/GP is necessary for PIC to work. |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1506 | if (!HasGotOfst) |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1507 | return ResNode; |
Akira Hatanaka | a5903ac | 2011-10-11 00:55:05 +0000 | [diff] [blame] | 1508 | SDValue GALo = DAG.getTargetGlobalAddress(GV, dl, ValTy, 0, |
| 1509 | IsN64 ? MipsII::MO_GOT_OFST : |
| 1510 | MipsII::MO_ABS_LO); |
| 1511 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, ValTy, GALo); |
| 1512 | return DAG.getNode(ISD::ADD, dl, ValTy, ResNode, Lo); |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1513 | } |
| 1514 | |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 1515 | SDValue MipsTargetLowering::LowerBlockAddress(SDValue Op, |
| 1516 | SelectionDAG &DAG) const { |
Akira Hatanaka | f48eb53 | 2011-04-25 17:10:45 +0000 | [diff] [blame] | 1517 | const BlockAddress *BA = cast<BlockAddressSDNode>(Op)->getBlockAddress(); |
| 1518 | // FIXME there isn't actually debug info here |
| 1519 | DebugLoc dl = Op.getDebugLoc(); |
| 1520 | |
Akira Hatanaka | 9b944a8 | 2011-11-16 22:42:10 +0000 | [diff] [blame] | 1521 | if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64) { |
Akira Hatanaka | f48eb53 | 2011-04-25 17:10:45 +0000 | [diff] [blame] | 1522 | // %hi/%lo relocation |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1523 | SDValue BAHi = DAG.getBlockAddress(BA, MVT::i32, true, MipsII::MO_ABS_HI); |
| 1524 | SDValue BALo = DAG.getBlockAddress(BA, MVT::i32, true, MipsII::MO_ABS_LO); |
Akira Hatanaka | f48eb53 | 2011-04-25 17:10:45 +0000 | [diff] [blame] | 1525 | SDValue Hi = DAG.getNode(MipsISD::Hi, dl, MVT::i32, BAHi); |
| 1526 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, BALo); |
| 1527 | return DAG.getNode(ISD::ADD, dl, MVT::i32, Hi, Lo); |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 1528 | } |
Akira Hatanaka | f48eb53 | 2011-04-25 17:10:45 +0000 | [diff] [blame] | 1529 | |
Akira Hatanaka | 9b944a8 | 2011-11-16 22:42:10 +0000 | [diff] [blame] | 1530 | EVT ValTy = Op.getValueType(); |
| 1531 | unsigned GOTFlag = IsN64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT; |
| 1532 | unsigned OFSTFlag = IsN64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO; |
| 1533 | SDValue BAGOTOffset = DAG.getBlockAddress(BA, ValTy, true, GOTFlag); |
Akira Hatanaka | 6df7e23 | 2011-12-09 01:53:17 +0000 | [diff] [blame] | 1534 | BAGOTOffset = DAG.getNode(MipsISD::Wrapper, dl, ValTy, BAGOTOffset); |
Akira Hatanaka | 9b944a8 | 2011-11-16 22:42:10 +0000 | [diff] [blame] | 1535 | SDValue BALOOffset = DAG.getBlockAddress(BA, ValTy, true, OFSTFlag); |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1536 | SDValue Load = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), BAGOTOffset, |
Pete Cooper | d752e0f | 2011-11-08 18:42:53 +0000 | [diff] [blame] | 1537 | MachinePointerInfo(), false, false, false, 0); |
Akira Hatanaka | 9b944a8 | 2011-11-16 22:42:10 +0000 | [diff] [blame] | 1538 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, ValTy, BALOOffset); |
| 1539 | return DAG.getNode(ISD::ADD, dl, ValTy, Load, Lo); |
Bruno Cardoso Lopes | ca8a2aa | 2011-03-04 20:01:52 +0000 | [diff] [blame] | 1540 | } |
| 1541 | |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1542 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1543 | LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1544 | { |
Akira Hatanaka | 3faac0a | 2011-12-14 18:26:41 +0000 | [diff] [blame] | 1545 | // If the relocation model is PIC, use the General Dynamic TLS Model or |
| 1546 | // Local Dynamic TLS model, otherwise use the Initial Exec or |
| 1547 | // Local Exec TLS Model. |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1548 | |
| 1549 | GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(Op); |
| 1550 | DebugLoc dl = GA->getDebugLoc(); |
| 1551 | const GlobalValue *GV = GA->getGlobal(); |
| 1552 | EVT PtrVT = getPointerTy(); |
| 1553 | |
| 1554 | if (getTargetMachine().getRelocationModel() == Reloc::PIC_) { |
| 1555 | // General Dynamic TLS Model |
Akira Hatanaka | 3faac0a | 2011-12-14 18:26:41 +0000 | [diff] [blame] | 1556 | bool LocalDynamic = GV->hasInternalLinkage(); |
| 1557 | unsigned Flag = LocalDynamic ? MipsII::MO_TLSLDM :MipsII::MO_TLSGD; |
| 1558 | SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, Flag); |
Akira Hatanaka | 6df7e23 | 2011-12-09 01:53:17 +0000 | [diff] [blame] | 1559 | SDValue Argument = DAG.getNode(MipsISD::Wrapper, dl, PtrVT, TGA); |
Akira Hatanaka | 7a7194b | 2011-12-08 21:05:38 +0000 | [diff] [blame] | 1560 | unsigned PtrSize = PtrVT.getSizeInBits(); |
| 1561 | IntegerType *PtrTy = Type::getIntNTy(*DAG.getContext(), PtrSize); |
| 1562 | |
Benjamin Kramer | 5eccf67 | 2011-12-11 12:21:34 +0000 | [diff] [blame] | 1563 | SDValue TlsGetAddr = DAG.getExternalSymbol("__tls_get_addr", PtrVT); |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1564 | |
| 1565 | ArgListTy Args; |
| 1566 | ArgListEntry Entry; |
| 1567 | Entry.Node = Argument; |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1568 | Entry.Ty = PtrTy; |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1569 | Args.push_back(Entry); |
Akira Hatanaka | 7a7194b | 2011-12-08 21:05:38 +0000 | [diff] [blame] | 1570 | |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1571 | std::pair<SDValue, SDValue> CallResult = |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1572 | LowerCallTo(DAG.getEntryNode(), PtrTy, |
| 1573 | false, false, false, false, 0, CallingConv::C, false, true, |
Akira Hatanaka | 7a7194b | 2011-12-08 21:05:38 +0000 | [diff] [blame] | 1574 | TlsGetAddr, Args, DAG, dl); |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1575 | |
Akira Hatanaka | 3faac0a | 2011-12-14 18:26:41 +0000 | [diff] [blame] | 1576 | SDValue Ret = CallResult.first; |
| 1577 | |
| 1578 | if (!LocalDynamic) |
| 1579 | return Ret; |
| 1580 | |
| 1581 | SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
| 1582 | MipsII::MO_DTPREL_HI); |
| 1583 | SDValue Hi = DAG.getNode(MipsISD::Hi, dl, PtrVT, TGAHi); |
| 1584 | SDValue TGALo = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
| 1585 | MipsII::MO_DTPREL_LO); |
| 1586 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, TGALo); |
| 1587 | SDValue Add = DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Ret); |
| 1588 | return DAG.getNode(ISD::ADD, dl, PtrVT, Add, Lo); |
Bruno Cardoso Lopes | d979686 | 2011-05-31 02:53:58 +0000 | [diff] [blame] | 1589 | } |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1590 | |
| 1591 | SDValue Offset; |
| 1592 | if (GV->isDeclaration()) { |
| 1593 | // Initial Exec TLS Model |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1594 | SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1595 | MipsII::MO_GOTTPREL); |
Akira Hatanaka | 6df7e23 | 2011-12-09 01:53:17 +0000 | [diff] [blame] | 1596 | TGA = DAG.getNode(MipsISD::Wrapper, dl, PtrVT, TGA); |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1597 | Offset = DAG.getLoad(PtrVT, dl, |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1598 | DAG.getEntryNode(), TGA, MachinePointerInfo(), |
Pete Cooper | d752e0f | 2011-11-08 18:42:53 +0000 | [diff] [blame] | 1599 | false, false, false, 0); |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1600 | } else { |
| 1601 | // Local Exec TLS Model |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1602 | SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1603 | MipsII::MO_TPREL_HI); |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1604 | SDValue TGALo = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1605 | MipsII::MO_TPREL_LO); |
Akira Hatanaka | ca07479 | 2011-12-08 20:34:32 +0000 | [diff] [blame] | 1606 | SDValue Hi = DAG.getNode(MipsISD::Hi, dl, PtrVT, TGAHi); |
| 1607 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, TGALo); |
| 1608 | Offset = DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Lo); |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 1609 | } |
| 1610 | |
| 1611 | SDValue ThreadPointer = DAG.getNode(MipsISD::ThreadPointer, dl, PtrVT); |
| 1612 | return DAG.getNode(ISD::ADD, dl, PtrVT, ThreadPointer, Offset); |
Bruno Cardoso Lopes | 97843cd | 2008-07-29 19:29:50 +0000 | [diff] [blame] | 1613 | } |
| 1614 | |
| 1615 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1616 | LowerJumpTable(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 753a987 | 2007-11-12 19:49:57 +0000 | [diff] [blame] | 1617 | { |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1618 | SDValue HiPart, JTI, JTILo; |
Dale Johannesen | de06470 | 2009-02-06 21:50:26 +0000 | [diff] [blame] | 1619 | // FIXME there isn't actually debug info here |
Dale Johannesen | 33c960f | 2009-02-04 20:06:27 +0000 | [diff] [blame] | 1620 | DebugLoc dl = Op.getDebugLoc(); |
Bruno Cardoso Lopes | c517cb0 | 2009-09-01 17:27:58 +0000 | [diff] [blame] | 1621 | bool IsPIC = getTargetMachine().getRelocationModel() == Reloc::PIC_; |
Owen Anderson | e50ed30 | 2009-08-10 22:56:29 +0000 | [diff] [blame] | 1622 | EVT PtrVT = Op.getValueType(); |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1623 | JumpTableSDNode *JT = cast<JumpTableSDNode>(Op); |
Bruno Cardoso Lopes | 753a987 | 2007-11-12 19:49:57 +0000 | [diff] [blame] | 1624 | |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1625 | if (!IsPIC && !IsN64) { |
| 1626 | JTI = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, MipsII::MO_ABS_HI); |
| 1627 | HiPart = DAG.getNode(MipsISD::Hi, dl, PtrVT, JTI); |
| 1628 | JTILo = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, MipsII::MO_ABS_LO); |
Akira Hatanaka | 342837d | 2011-05-28 01:07:07 +0000 | [diff] [blame] | 1629 | } else {// Emit Load from Global Pointer |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1630 | unsigned GOTFlag = IsN64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT; |
| 1631 | unsigned OfstFlag = IsN64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO; |
| 1632 | JTI = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, GOTFlag); |
Akira Hatanaka | 6df7e23 | 2011-12-09 01:53:17 +0000 | [diff] [blame] | 1633 | JTI = DAG.getNode(MipsISD::Wrapper, dl, PtrVT, JTI); |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1634 | HiPart = DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), JTI, |
| 1635 | MachinePointerInfo(), false, false, false, 0); |
| 1636 | JTILo = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, OfstFlag); |
Akira Hatanaka | 342837d | 2011-05-28 01:07:07 +0000 | [diff] [blame] | 1637 | } |
Bruno Cardoso Lopes | 753a987 | 2007-11-12 19:49:57 +0000 | [diff] [blame] | 1638 | |
Akira Hatanaka | 2bf08ec | 2011-12-05 21:03:03 +0000 | [diff] [blame] | 1639 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, JTILo); |
| 1640 | return DAG.getNode(ISD::ADD, dl, PtrVT, HiPart, Lo); |
Bruno Cardoso Lopes | 753a987 | 2007-11-12 19:49:57 +0000 | [diff] [blame] | 1641 | } |
| 1642 | |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 1643 | SDValue MipsTargetLowering:: |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1644 | LowerConstantPool(SDValue Op, SelectionDAG &DAG) const |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 1645 | { |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 1646 | SDValue ResNode; |
Bruno Cardoso Lopes | 92e87f2 | 2008-07-23 16:01:50 +0000 | [diff] [blame] | 1647 | ConstantPoolSDNode *N = cast<ConstantPoolSDNode>(Op); |
Dan Gohman | 46510a7 | 2010-04-15 01:51:59 +0000 | [diff] [blame] | 1648 | const Constant *C = N->getConstVal(); |
Dale Johannesen | de06470 | 2009-02-06 21:50:26 +0000 | [diff] [blame] | 1649 | // FIXME there isn't actually debug info here |
| 1650 | DebugLoc dl = Op.getDebugLoc(); |
Bruno Cardoso Lopes | 92e87f2 | 2008-07-23 16:01:50 +0000 | [diff] [blame] | 1651 | |
| 1652 | // gp_rel relocation |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1653 | // FIXME: we should reference the constant pool using small data sections, |
Chris Lattner | 7a2bdde | 2011-04-15 05:18:47 +0000 | [diff] [blame] | 1654 | // but the asm printer currently doesn't support this feature without |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1655 | // 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] | 1656 | // stuff below. |
Eli Friedman | e2c7408 | 2009-08-03 02:22:28 +0000 | [diff] [blame] | 1657 | //if (IsInSmallSection(C->getType())) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 1658 | // SDValue GPRelNode = DAG.getNode(MipsISD::GPRel, MVT::i32, CP); |
| 1659 | // SDValue GOT = DAG.getGLOBAL_OFFSET_TABLE(MVT::i32); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1660 | // ResNode = DAG.getNode(ISD::ADD, MVT::i32, GOT, GPRelNode); |
Bruno Cardoso Lopes | d71cebf | 2009-11-25 12:17:58 +0000 | [diff] [blame] | 1661 | |
| 1662 | if (getTargetMachine().getRelocationModel() != Reloc::PIC_) { |
Akira Hatanaka | e2e436a | 2011-04-01 21:41:06 +0000 | [diff] [blame] | 1663 | SDValue CPHi = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment(), |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1664 | N->getOffset(), MipsII::MO_ABS_HI); |
Akira Hatanaka | e2e436a | 2011-04-01 21:41:06 +0000 | [diff] [blame] | 1665 | SDValue CPLo = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment(), |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1666 | N->getOffset(), MipsII::MO_ABS_LO); |
Akira Hatanaka | e2e436a | 2011-04-01 21:41:06 +0000 | [diff] [blame] | 1667 | SDValue HiPart = DAG.getNode(MipsISD::Hi, dl, MVT::i32, CPHi); |
| 1668 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, CPLo); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 1669 | ResNode = DAG.getNode(ISD::ADD, dl, MVT::i32, HiPart, Lo); |
Bruno Cardoso Lopes | d71cebf | 2009-11-25 12:17:58 +0000 | [diff] [blame] | 1670 | } else { |
Akira Hatanaka | 620db89 | 2011-11-16 22:44:38 +0000 | [diff] [blame] | 1671 | EVT ValTy = Op.getValueType(); |
| 1672 | unsigned GOTFlag = IsN64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT; |
| 1673 | unsigned OFSTFlag = IsN64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO; |
| 1674 | SDValue CP = DAG.getTargetConstantPool(C, ValTy, N->getAlignment(), |
| 1675 | N->getOffset(), GOTFlag); |
Akira Hatanaka | 6df7e23 | 2011-12-09 01:53:17 +0000 | [diff] [blame] | 1676 | CP = DAG.getNode(MipsISD::Wrapper, dl, ValTy, CP); |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1677 | SDValue Load = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), CP, |
| 1678 | MachinePointerInfo::getConstantPool(), false, |
| 1679 | false, false, 0); |
Akira Hatanaka | 620db89 | 2011-11-16 22:44:38 +0000 | [diff] [blame] | 1680 | SDValue CPLo = DAG.getTargetConstantPool(C, ValTy, N->getAlignment(), |
| 1681 | N->getOffset(), OFSTFlag); |
| 1682 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, ValTy, CPLo); |
| 1683 | ResNode = DAG.getNode(ISD::ADD, dl, ValTy, Load, Lo); |
Bruno Cardoso Lopes | d71cebf | 2009-11-25 12:17:58 +0000 | [diff] [blame] | 1684 | } |
Bruno Cardoso Lopes | 92e87f2 | 2008-07-23 16:01:50 +0000 | [diff] [blame] | 1685 | |
| 1686 | return ResNode; |
Bruno Cardoso Lopes | 97c2537 | 2008-07-09 04:15:08 +0000 | [diff] [blame] | 1687 | } |
| 1688 | |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 1689 | SDValue MipsTargetLowering::LowerVASTART(SDValue Op, SelectionDAG &DAG) const { |
Dan Gohman | 1e93df6 | 2010-04-17 14:41:14 +0000 | [diff] [blame] | 1690 | MachineFunction &MF = DAG.getMachineFunction(); |
| 1691 | MipsFunctionInfo *FuncInfo = MF.getInfo<MipsFunctionInfo>(); |
| 1692 | |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 1693 | DebugLoc dl = Op.getDebugLoc(); |
Dan Gohman | 1e93df6 | 2010-04-17 14:41:14 +0000 | [diff] [blame] | 1694 | SDValue FI = DAG.getFrameIndex(FuncInfo->getVarArgsFrameIndex(), |
| 1695 | getPointerTy()); |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 1696 | |
| 1697 | // vastart just stores the address of the VarArgsFrameIndex slot into the |
| 1698 | // memory location argument. |
| 1699 | const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue(); |
Chris Lattner | 8026a9d | 2010-09-21 17:50:43 +0000 | [diff] [blame] | 1700 | return DAG.getStore(Op.getOperand(0), dl, FI, Op.getOperand(1), |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1701 | MachinePointerInfo(SV), false, false, 0); |
Bruno Cardoso Lopes | 6059b85 | 2010-02-06 21:00:02 +0000 | [diff] [blame] | 1702 | } |
Akira Hatanaka | 7398bf0 | 2011-12-07 21:48:50 +0000 | [diff] [blame] | 1703 | |
| 1704 | // Called if the size of integer registers is large enough to hold the whole |
| 1705 | // floating point number. |
| 1706 | static SDValue LowerFCOPYSIGNLargeIntReg(SDValue Op, SelectionDAG &DAG) { |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1707 | // FIXME: Use ext/ins instructions if target architecture is Mips32r2. |
Akira Hatanaka | 7398bf0 | 2011-12-07 21:48:50 +0000 | [diff] [blame] | 1708 | EVT ValTy = Op.getValueType(); |
| 1709 | EVT IntValTy = MVT::getIntegerVT(ValTy.getSizeInBits()); |
| 1710 | uint64_t Mask = (uint64_t)1 << (ValTy.getSizeInBits() - 1); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1711 | DebugLoc dl = Op.getDebugLoc(); |
Akira Hatanaka | 7398bf0 | 2011-12-07 21:48:50 +0000 | [diff] [blame] | 1712 | SDValue Op0 = DAG.getNode(ISD::BITCAST, dl, IntValTy, Op.getOperand(0)); |
| 1713 | SDValue Op1 = DAG.getNode(ISD::BITCAST, dl, IntValTy, Op.getOperand(1)); |
| 1714 | SDValue And0 = DAG.getNode(ISD::AND, dl, IntValTy, Op0, |
| 1715 | DAG.getConstant(Mask - 1, IntValTy)); |
| 1716 | SDValue And1 = DAG.getNode(ISD::AND, dl, IntValTy, Op1, |
| 1717 | DAG.getConstant(Mask, IntValTy)); |
| 1718 | SDValue Result = DAG.getNode(ISD::OR, dl, IntValTy, And0, And1); |
| 1719 | return DAG.getNode(ISD::BITCAST, dl, ValTy, Result); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1720 | } |
| 1721 | |
Akira Hatanaka | 7398bf0 | 2011-12-07 21:48:50 +0000 | [diff] [blame] | 1722 | // Called if the size of integer registers is not large enough to hold the whole |
| 1723 | // floating point number (e.g. f64 & 32-bit integer register). |
| 1724 | static SDValue |
| 1725 | LowerFCOPYSIGNSmallIntReg(SDValue Op, SelectionDAG &DAG, bool isLittle) { |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 1726 | // FIXME: |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1727 | // Use ext/ins instructions if target architecture is Mips32r2. |
| 1728 | // Eliminate redundant mfc1 and mtc1 instructions. |
| 1729 | unsigned LoIdx = 0, HiIdx = 1; |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 1730 | |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1731 | if (!isLittle) |
| 1732 | std::swap(LoIdx, HiIdx); |
| 1733 | |
| 1734 | DebugLoc dl = Op.getDebugLoc(); |
| 1735 | SDValue Word0 = DAG.getNode(MipsISD::ExtractElementF64, dl, MVT::i32, |
| 1736 | Op.getOperand(0), |
| 1737 | DAG.getConstant(LoIdx, MVT::i32)); |
| 1738 | SDValue Hi0 = DAG.getNode(MipsISD::ExtractElementF64, dl, MVT::i32, |
| 1739 | Op.getOperand(0), DAG.getConstant(HiIdx, MVT::i32)); |
| 1740 | SDValue Hi1 = DAG.getNode(MipsISD::ExtractElementF64, dl, MVT::i32, |
| 1741 | Op.getOperand(1), DAG.getConstant(HiIdx, MVT::i32)); |
| 1742 | SDValue And0 = DAG.getNode(ISD::AND, dl, MVT::i32, Hi0, |
| 1743 | DAG.getConstant(0x7fffffff, MVT::i32)); |
| 1744 | SDValue And1 = DAG.getNode(ISD::AND, dl, MVT::i32, Hi1, |
| 1745 | DAG.getConstant(0x80000000, MVT::i32)); |
| 1746 | SDValue Word1 = DAG.getNode(ISD::OR, dl, MVT::i32, And0, And1); |
| 1747 | |
| 1748 | if (!isLittle) |
| 1749 | std::swap(Word0, Word1); |
| 1750 | |
| 1751 | return DAG.getNode(MipsISD::BuildPairF64, dl, MVT::f64, Word0, Word1); |
| 1752 | } |
| 1753 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1754 | SDValue |
| 1755 | MipsTargetLowering::LowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const { |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1756 | EVT Ty = Op.getValueType(); |
| 1757 | |
| 1758 | assert(Ty == MVT::f32 || Ty == MVT::f64); |
| 1759 | |
Akira Hatanaka | 7398bf0 | 2011-12-07 21:48:50 +0000 | [diff] [blame] | 1760 | if (Ty == MVT::f32 || HasMips64) |
| 1761 | return LowerFCOPYSIGNLargeIntReg(Op, DAG); |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1762 | |
| 1763 | return LowerFCOPYSIGNSmallIntReg(Op, DAG, Subtarget->isLittle()); |
Akira Hatanaka | 9c3d57c | 2011-05-25 19:32:07 +0000 | [diff] [blame] | 1764 | } |
| 1765 | |
Akira Hatanaka | 2e59147 | 2011-06-02 00:24:44 +0000 | [diff] [blame] | 1766 | SDValue MipsTargetLowering:: |
| 1767 | LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const { |
Bruno Cardoso Lopes | e0b5cfc | 2011-06-16 00:40:02 +0000 | [diff] [blame] | 1768 | // check the depth |
| 1769 | assert((cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue() == 0) && |
Akira Hatanaka | 0f84382 | 2011-06-07 18:58:42 +0000 | [diff] [blame] | 1770 | "Frame address can only be determined for current frame."); |
Akira Hatanaka | 2e59147 | 2011-06-02 00:24:44 +0000 | [diff] [blame] | 1771 | |
| 1772 | MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo(); |
| 1773 | MFI->setFrameAddressIsTaken(true); |
| 1774 | EVT VT = Op.getValueType(); |
| 1775 | DebugLoc dl = Op.getDebugLoc(); |
Akira Hatanaka | 46ac439 | 2011-11-11 04:11:56 +0000 | [diff] [blame] | 1776 | SDValue FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, |
| 1777 | IsN64 ? Mips::FP_64 : Mips::FP, VT); |
Akira Hatanaka | 2e59147 | 2011-06-02 00:24:44 +0000 | [diff] [blame] | 1778 | return FrameAddr; |
| 1779 | } |
| 1780 | |
Akira Hatanaka | db54826 | 2011-07-19 23:30:50 +0000 | [diff] [blame] | 1781 | // TODO: set SType according to the desired memory barrier behavior. |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 1782 | SDValue |
| 1783 | MipsTargetLowering::LowerMEMBARRIER(SDValue Op, SelectionDAG& DAG) const { |
Akira Hatanaka | db54826 | 2011-07-19 23:30:50 +0000 | [diff] [blame] | 1784 | unsigned SType = 0; |
| 1785 | DebugLoc dl = Op.getDebugLoc(); |
| 1786 | return DAG.getNode(MipsISD::Sync, dl, MVT::Other, Op.getOperand(0), |
| 1787 | DAG.getConstant(SType, MVT::i32)); |
| 1788 | } |
| 1789 | |
Eli Friedman | 1464846 | 2011-07-27 22:21:52 +0000 | [diff] [blame] | 1790 | SDValue MipsTargetLowering::LowerATOMIC_FENCE(SDValue Op, |
| 1791 | SelectionDAG& DAG) const { |
| 1792 | // FIXME: Need pseudo-fence for 'singlethread' fences |
| 1793 | // FIXME: Set SType for weaker fences where supported/appropriate. |
| 1794 | unsigned SType = 0; |
| 1795 | DebugLoc dl = Op.getDebugLoc(); |
| 1796 | return DAG.getNode(MipsISD::Sync, dl, MVT::Other, Op.getOperand(0), |
| 1797 | DAG.getConstant(SType, MVT::i32)); |
| 1798 | } |
| 1799 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1800 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 1801 | // Calling Convention Implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1802 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 1803 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1804 | //===----------------------------------------------------------------------===// |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1805 | // TODO: Implement a generic logic using tblgen that can support this. |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 1806 | // Mips O32 ABI rules: |
| 1807 | // --- |
| 1808 | // i32 - Passed in A0, A1, A2, A3 and stack |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1809 | // 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] | 1810 | // an argument. Otherwise, passed in A1, A2, A3 and stack. |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1811 | // f64 - Only passed in two aliased f32 registers if no int reg has been used |
| 1812 | // 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] | 1813 | // not used, it must be shadowed. If only A3 is avaiable, shadow it and |
| 1814 | // go to stack. |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 1815 | // |
| 1816 | // 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] | 1817 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 1818 | |
Duncan Sands | 1e96bab | 2010-11-04 10:49:57 +0000 | [diff] [blame] | 1819 | static bool CC_MipsO32(unsigned ValNo, MVT ValVT, |
Duncan Sands | 1440e8b | 2010-11-03 11:35:31 +0000 | [diff] [blame] | 1820 | MVT LocVT, CCValAssign::LocInfo LocInfo, |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 1821 | ISD::ArgFlagsTy ArgFlags, CCState &State) { |
| 1822 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 1823 | static const unsigned IntRegsSize=4, FloatRegsSize=2; |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 1824 | |
| 1825 | static const unsigned IntRegs[] = { |
| 1826 | Mips::A0, Mips::A1, Mips::A2, Mips::A3 |
| 1827 | }; |
| 1828 | static const unsigned F32Regs[] = { |
| 1829 | Mips::F12, Mips::F14 |
| 1830 | }; |
| 1831 | static const unsigned F64Regs[] = { |
| 1832 | Mips::D6, Mips::D7 |
| 1833 | }; |
| 1834 | |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 1835 | // ByVal Args |
| 1836 | if (ArgFlags.isByVal()) { |
| 1837 | State.HandleByVal(ValNo, ValVT, LocVT, LocInfo, |
| 1838 | 1 /*MinSize*/, 4 /*MinAlign*/, ArgFlags); |
| 1839 | unsigned NextReg = (State.getNextStackOffset() + 3) / 4; |
| 1840 | for (unsigned r = State.getFirstUnallocated(IntRegs, IntRegsSize); |
| 1841 | r < std::min(IntRegsSize, NextReg); ++r) |
| 1842 | State.AllocateReg(IntRegs[r]); |
| 1843 | return false; |
| 1844 | } |
| 1845 | |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 1846 | // Promote i8 and i16 |
| 1847 | if (LocVT == MVT::i8 || LocVT == MVT::i16) { |
| 1848 | LocVT = MVT::i32; |
| 1849 | if (ArgFlags.isSExt()) |
| 1850 | LocInfo = CCValAssign::SExt; |
| 1851 | else if (ArgFlags.isZExt()) |
| 1852 | LocInfo = CCValAssign::ZExt; |
| 1853 | else |
| 1854 | LocInfo = CCValAssign::AExt; |
| 1855 | } |
| 1856 | |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 1857 | unsigned Reg; |
| 1858 | |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 1859 | // f32 and f64 are allocated in A0, A1, A2, A3 when either of the following |
| 1860 | // is true: function is vararg, argument is 3rd or higher, there is previous |
| 1861 | // argument which is not f32 or f64. |
| 1862 | bool AllocateFloatsInIntReg = State.isVarArg() || ValNo > 1 |
| 1863 | || State.getFirstUnallocated(F32Regs, FloatRegsSize) != ValNo; |
Akira Hatanaka | a1a7ba8 | 2011-05-19 20:29:48 +0000 | [diff] [blame] | 1864 | unsigned OrigAlign = ArgFlags.getOrigAlign(); |
| 1865 | bool isI64 = (ValVT == MVT::i32 && OrigAlign == 8); |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 1866 | |
| 1867 | if (ValVT == MVT::i32 || (ValVT == MVT::f32 && AllocateFloatsInIntReg)) { |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 1868 | Reg = State.AllocateReg(IntRegs, IntRegsSize); |
Akira Hatanaka | a1a7ba8 | 2011-05-19 20:29:48 +0000 | [diff] [blame] | 1869 | // If this is the first part of an i64 arg, |
| 1870 | // the allocated register must be either A0 or A2. |
| 1871 | if (isI64 && (Reg == Mips::A1 || Reg == Mips::A3)) |
| 1872 | Reg = State.AllocateReg(IntRegs, IntRegsSize); |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 1873 | LocVT = MVT::i32; |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 1874 | } else if (ValVT == MVT::f64 && AllocateFloatsInIntReg) { |
| 1875 | // Allocate int register and shadow next int register. If first |
| 1876 | // available register is Mips::A1 or Mips::A3, shadow it too. |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 1877 | Reg = State.AllocateReg(IntRegs, IntRegsSize); |
| 1878 | if (Reg == Mips::A1 || Reg == Mips::A3) |
| 1879 | Reg = State.AllocateReg(IntRegs, IntRegsSize); |
| 1880 | State.AllocateReg(IntRegs, IntRegsSize); |
| 1881 | LocVT = MVT::i32; |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 1882 | } else if (ValVT.isFloatingPoint() && !AllocateFloatsInIntReg) { |
| 1883 | // we are guaranteed to find an available float register |
| 1884 | if (ValVT == MVT::f32) { |
| 1885 | Reg = State.AllocateReg(F32Regs, FloatRegsSize); |
| 1886 | // Shadow int register |
| 1887 | State.AllocateReg(IntRegs, IntRegsSize); |
| 1888 | } else { |
| 1889 | Reg = State.AllocateReg(F64Regs, FloatRegsSize); |
| 1890 | // Shadow int registers |
| 1891 | unsigned Reg2 = State.AllocateReg(IntRegs, IntRegsSize); |
| 1892 | if (Reg2 == Mips::A1 || Reg2 == Mips::A3) |
| 1893 | State.AllocateReg(IntRegs, IntRegsSize); |
| 1894 | State.AllocateReg(IntRegs, IntRegsSize); |
| 1895 | } |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 1896 | } else |
| 1897 | llvm_unreachable("Cannot handle this ValVT."); |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 1898 | |
Akira Hatanaka | d37776d | 2011-05-20 21:39:54 +0000 | [diff] [blame] | 1899 | unsigned SizeInBytes = ValVT.getSizeInBits() >> 3; |
| 1900 | unsigned Offset = State.AllocateStack(SizeInBytes, OrigAlign); |
| 1901 | |
| 1902 | if (!Reg) |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 1903 | State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo)); |
Akira Hatanaka | d37776d | 2011-05-20 21:39:54 +0000 | [diff] [blame] | 1904 | else |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 1905 | State.addLoc(CCValAssign::getReg(ValNo, ValVT, Reg, LocVT, LocInfo)); |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 1906 | |
Bruno Cardoso Lopes | c42fb5f | 2011-03-04 20:27:44 +0000 | [diff] [blame] | 1907 | return false; // CC must always match |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 1908 | } |
| 1909 | |
Akira Hatanaka | 2c5d652 | 2011-11-12 02:20:46 +0000 | [diff] [blame] | 1910 | static const unsigned Mips64IntRegs[8] = |
| 1911 | {Mips::A0_64, Mips::A1_64, Mips::A2_64, Mips::A3_64, |
| 1912 | Mips::T0_64, Mips::T1_64, Mips::T2_64, Mips::T3_64}; |
| 1913 | static const unsigned Mips64DPRegs[8] = |
| 1914 | {Mips::D12_64, Mips::D13_64, Mips::D14_64, Mips::D15_64, |
| 1915 | Mips::D16_64, Mips::D17_64, Mips::D18_64, Mips::D19_64}; |
| 1916 | |
| 1917 | static bool CC_Mips64Byval(unsigned ValNo, MVT ValVT, MVT LocVT, |
| 1918 | CCValAssign::LocInfo LocInfo, |
| 1919 | ISD::ArgFlagsTy ArgFlags, CCState &State) { |
| 1920 | unsigned Align = std::max(ArgFlags.getByValAlign(), (unsigned)8); |
| 1921 | unsigned Size = (ArgFlags.getByValSize() + 7) / 8 * 8; |
| 1922 | unsigned FirstIdx = State.getFirstUnallocated(Mips64IntRegs, 8); |
| 1923 | |
| 1924 | assert(Align <= 16 && "Cannot handle alignments larger than 16."); |
| 1925 | |
| 1926 | // If byval is 16-byte aligned, the first arg register must be even. |
| 1927 | if ((Align == 16) && (FirstIdx % 2)) { |
| 1928 | State.AllocateReg(Mips64IntRegs[FirstIdx], Mips64DPRegs[FirstIdx]); |
| 1929 | ++FirstIdx; |
| 1930 | } |
| 1931 | |
| 1932 | // Mark the registers allocated. |
| 1933 | for (unsigned I = FirstIdx; Size && (I < 8); Size -= 8, ++I) |
| 1934 | State.AllocateReg(Mips64IntRegs[I], Mips64DPRegs[I]); |
| 1935 | |
| 1936 | // Allocate space on caller's stack. |
| 1937 | unsigned Offset = State.AllocateStack(Size, Align); |
| 1938 | |
| 1939 | if (FirstIdx < 8) |
| 1940 | State.addLoc(CCValAssign::getReg(ValNo, ValVT, Mips64IntRegs[FirstIdx], |
| 1941 | LocVT, LocInfo)); |
| 1942 | else |
| 1943 | State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo)); |
| 1944 | |
| 1945 | return true; |
| 1946 | } |
| 1947 | |
| 1948 | #include "MipsGenCallingConv.inc" |
| 1949 | |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 1950 | static void |
Akira Hatanaka | 08067b2 | 2012-01-24 22:07:36 +0000 | [diff] [blame] | 1951 | AnalyzeMips64CallOperands(CCState &CCInfo, |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 1952 | const SmallVectorImpl<ISD::OutputArg> &Outs) { |
| 1953 | unsigned NumOps = Outs.size(); |
| 1954 | for (unsigned i = 0; i != NumOps; ++i) { |
| 1955 | MVT ArgVT = Outs[i].VT; |
| 1956 | ISD::ArgFlagsTy ArgFlags = Outs[i].Flags; |
| 1957 | bool R; |
| 1958 | |
| 1959 | if (Outs[i].IsFixed) |
| 1960 | R = CC_MipsN(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, CCInfo); |
| 1961 | else |
| 1962 | R = CC_MipsN_VarArg(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, CCInfo); |
| 1963 | |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 1964 | if (R) { |
Benjamin Kramer | 6296ee3 | 2011-11-14 19:51:48 +0000 | [diff] [blame] | 1965 | #ifndef NDEBUG |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 1966 | dbgs() << "Call operand #" << i << " has unhandled type " |
| 1967 | << EVT(ArgVT).getEVTString(); |
| 1968 | #endif |
| 1969 | llvm_unreachable(0); |
| 1970 | } |
| 1971 | } |
| 1972 | } |
| 1973 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1974 | //===----------------------------------------------------------------------===// |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 1975 | // Call Calling Convention Implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 1976 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 1977 | |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 1978 | static const unsigned O32IntRegsSize = 4; |
| 1979 | |
| 1980 | static const unsigned O32IntRegs[] = { |
| 1981 | Mips::A0, Mips::A1, Mips::A2, Mips::A3 |
| 1982 | }; |
| 1983 | |
Akira Hatanaka | 373e3a4 | 2011-09-23 00:58:33 +0000 | [diff] [blame] | 1984 | // Return next O32 integer argument register. |
| 1985 | static unsigned getNextIntArgReg(unsigned Reg) { |
| 1986 | assert((Reg == Mips::A0) || (Reg == Mips::A2)); |
| 1987 | return (Reg == Mips::A0) ? Mips::A1 : Mips::A3; |
| 1988 | } |
| 1989 | |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 1990 | // Write ByVal Arg to arg registers and stack. |
| 1991 | static void |
Akira Hatanaka | da7f5f1 | 2011-09-19 20:26:02 +0000 | [diff] [blame] | 1992 | WriteByValArg(SDValue& ByValChain, SDValue Chain, DebugLoc dl, |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 1993 | SmallVector<std::pair<unsigned, SDValue>, 16>& RegsToPass, |
| 1994 | SmallVector<SDValue, 8>& MemOpChains, int& LastFI, |
| 1995 | MachineFrameInfo *MFI, SelectionDAG &DAG, SDValue Arg, |
Akira Hatanaka | edacba8 | 2011-05-25 17:32:06 +0000 | [diff] [blame] | 1996 | const CCValAssign &VA, const ISD::ArgFlagsTy& Flags, |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 1997 | MVT PtrType, bool isLittle) { |
| 1998 | unsigned LocMemOffset = VA.getLocMemOffset(); |
| 1999 | unsigned Offset = 0; |
| 2000 | uint32_t RemainingSize = Flags.getByValSize(); |
Akira Hatanaka | 5c21c9e | 2011-08-12 21:30:06 +0000 | [diff] [blame] | 2001 | unsigned ByValAlign = Flags.getByValAlign(); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2002 | |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2003 | // Copy the first 4 words of byval arg to registers A0 - A3. |
| 2004 | // FIXME: Use a stricter alignment if it enables better optimization in passes |
| 2005 | // run later. |
| 2006 | for (; RemainingSize >= 4 && LocMemOffset < 4 * 4; |
| 2007 | Offset += 4, RemainingSize -= 4, LocMemOffset += 4) { |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2008 | SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg, |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2009 | DAG.getConstant(Offset, MVT::i32)); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2010 | SDValue LoadVal = DAG.getLoad(MVT::i32, dl, Chain, LoadPtr, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2011 | MachinePointerInfo(), false, false, false, |
| 2012 | std::min(ByValAlign, (unsigned )4)); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2013 | MemOpChains.push_back(LoadVal.getValue(1)); |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2014 | unsigned DstReg = O32IntRegs[LocMemOffset / 4]; |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2015 | RegsToPass.push_back(std::make_pair(DstReg, LoadVal)); |
| 2016 | } |
| 2017 | |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2018 | if (RemainingSize == 0) |
| 2019 | return; |
| 2020 | |
| 2021 | // If there still is a register available for argument passing, write the |
| 2022 | // remaining part of the structure to it using subword loads and shifts. |
| 2023 | if (LocMemOffset < 4 * 4) { |
| 2024 | assert(RemainingSize <= 3 && RemainingSize >= 1 && |
| 2025 | "There must be one to three bytes remaining."); |
| 2026 | unsigned LoadSize = (RemainingSize == 3 ? 2 : RemainingSize); |
| 2027 | SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg, |
| 2028 | DAG.getConstant(Offset, MVT::i32)); |
| 2029 | unsigned Alignment = std::min(ByValAlign, (unsigned )4); |
| 2030 | SDValue LoadVal = DAG.getExtLoad(ISD::ZEXTLOAD, dl, MVT::i32, Chain, |
| 2031 | LoadPtr, MachinePointerInfo(), |
| 2032 | MVT::getIntegerVT(LoadSize * 8), false, |
| 2033 | false, Alignment); |
| 2034 | MemOpChains.push_back(LoadVal.getValue(1)); |
| 2035 | |
| 2036 | // If target is big endian, shift it to the most significant half-word or |
| 2037 | // byte. |
| 2038 | if (!isLittle) |
| 2039 | LoadVal = DAG.getNode(ISD::SHL, dl, MVT::i32, LoadVal, |
| 2040 | DAG.getConstant(32 - LoadSize * 8, MVT::i32)); |
| 2041 | |
| 2042 | Offset += LoadSize; |
| 2043 | RemainingSize -= LoadSize; |
| 2044 | |
| 2045 | // Read second subword if necessary. |
| 2046 | if (RemainingSize != 0) { |
| 2047 | assert(RemainingSize == 1 && "There must be one byte remaining."); |
| 2048 | LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg, |
| 2049 | DAG.getConstant(Offset, MVT::i32)); |
| 2050 | unsigned Alignment = std::min(ByValAlign, (unsigned )2); |
| 2051 | SDValue Subword = DAG.getExtLoad(ISD::ZEXTLOAD, dl, MVT::i32, Chain, |
| 2052 | LoadPtr, MachinePointerInfo(), |
| 2053 | MVT::i8, false, false, Alignment); |
| 2054 | MemOpChains.push_back(Subword.getValue(1)); |
| 2055 | // Insert the loaded byte to LoadVal. |
| 2056 | // FIXME: Use INS if supported by target. |
| 2057 | unsigned ShiftAmt = isLittle ? 16 : 8; |
| 2058 | SDValue Shift = DAG.getNode(ISD::SHL, dl, MVT::i32, Subword, |
| 2059 | DAG.getConstant(ShiftAmt, MVT::i32)); |
| 2060 | LoadVal = DAG.getNode(ISD::OR, dl, MVT::i32, LoadVal, Shift); |
| 2061 | } |
| 2062 | |
| 2063 | unsigned DstReg = O32IntRegs[LocMemOffset / 4]; |
| 2064 | RegsToPass.push_back(std::make_pair(DstReg, LoadVal)); |
| 2065 | return; |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2066 | } |
Akira Hatanaka | 5ac8547 | 2011-08-18 23:39:37 +0000 | [diff] [blame] | 2067 | |
| 2068 | // Create a fixed object on stack at offset LocMemOffset and copy |
| 2069 | // remaining part of byval arg to it using memcpy. |
| 2070 | SDValue Src = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg, |
| 2071 | DAG.getConstant(Offset, MVT::i32)); |
| 2072 | LastFI = MFI->CreateFixedObject(RemainingSize, LocMemOffset, true); |
| 2073 | SDValue Dst = DAG.getFrameIndex(LastFI, PtrType); |
Akira Hatanaka | da7f5f1 | 2011-09-19 20:26:02 +0000 | [diff] [blame] | 2074 | ByValChain = DAG.getMemcpy(ByValChain, dl, Dst, Src, |
| 2075 | DAG.getConstant(RemainingSize, MVT::i32), |
| 2076 | std::min(ByValAlign, (unsigned)4), |
| 2077 | /*isVolatile=*/false, /*AlwaysInline=*/false, |
| 2078 | MachinePointerInfo(0), MachinePointerInfo(0)); |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2079 | } |
| 2080 | |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2081 | // Copy Mips64 byVal arg to registers and stack. |
| 2082 | void static |
| 2083 | PassByValArg64(SDValue& ByValChain, SDValue Chain, DebugLoc dl, |
| 2084 | SmallVector<std::pair<unsigned, SDValue>, 16>& RegsToPass, |
| 2085 | SmallVector<SDValue, 8>& MemOpChains, int& LastFI, |
| 2086 | MachineFrameInfo *MFI, SelectionDAG &DAG, SDValue Arg, |
| 2087 | const CCValAssign &VA, const ISD::ArgFlagsTy& Flags, |
| 2088 | EVT PtrTy, bool isLittle) { |
| 2089 | unsigned ByValSize = Flags.getByValSize(); |
| 2090 | unsigned Alignment = std::min(Flags.getByValAlign(), (unsigned)8); |
| 2091 | bool IsRegLoc = VA.isRegLoc(); |
| 2092 | unsigned Offset = 0; // Offset in # of bytes from the beginning of struct. |
| 2093 | unsigned LocMemOffset = 0; |
Akira Hatanaka | 1604085 | 2011-11-15 18:42:25 +0000 | [diff] [blame] | 2094 | unsigned MemCpySize = ByValSize; |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2095 | |
| 2096 | if (!IsRegLoc) |
| 2097 | LocMemOffset = VA.getLocMemOffset(); |
| 2098 | else { |
| 2099 | const unsigned *Reg = std::find(Mips64IntRegs, Mips64IntRegs + 8, |
| 2100 | VA.getLocReg()); |
| 2101 | const unsigned *RegEnd = Mips64IntRegs + 8; |
| 2102 | |
| 2103 | // Copy double words to registers. |
| 2104 | for (; (Reg != RegEnd) && (ByValSize >= Offset + 8); ++Reg, Offset += 8) { |
| 2105 | SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, PtrTy, Arg, |
| 2106 | DAG.getConstant(Offset, PtrTy)); |
| 2107 | SDValue LoadVal = DAG.getLoad(MVT::i64, dl, Chain, LoadPtr, |
| 2108 | MachinePointerInfo(), false, false, false, |
| 2109 | Alignment); |
| 2110 | MemOpChains.push_back(LoadVal.getValue(1)); |
| 2111 | RegsToPass.push_back(std::make_pair(*Reg, LoadVal)); |
| 2112 | } |
| 2113 | |
Akira Hatanaka | 1604085 | 2011-11-15 18:42:25 +0000 | [diff] [blame] | 2114 | // Return if the struct has been fully copied. |
| 2115 | if (!(MemCpySize = ByValSize - Offset)) |
| 2116 | return; |
| 2117 | |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2118 | // If there is an argument register available, copy the remainder of the |
| 2119 | // byval argument with sub-doubleword loads and shifts. |
Akira Hatanaka | 1604085 | 2011-11-15 18:42:25 +0000 | [diff] [blame] | 2120 | if (Reg != RegEnd) { |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2121 | assert((ByValSize < Offset + 8) && |
| 2122 | "Size of the remainder should be smaller than 8-byte."); |
| 2123 | SDValue Val; |
| 2124 | for (unsigned LoadSize = 4; Offset < ByValSize; LoadSize /= 2) { |
| 2125 | unsigned RemSize = ByValSize - Offset; |
| 2126 | |
| 2127 | if (RemSize < LoadSize) |
| 2128 | continue; |
| 2129 | |
| 2130 | SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, PtrTy, Arg, |
| 2131 | DAG.getConstant(Offset, PtrTy)); |
| 2132 | SDValue LoadVal = |
| 2133 | DAG.getExtLoad(ISD::ZEXTLOAD, dl, MVT::i64, Chain, LoadPtr, |
| 2134 | MachinePointerInfo(), MVT::getIntegerVT(LoadSize * 8), |
| 2135 | false, false, Alignment); |
| 2136 | MemOpChains.push_back(LoadVal.getValue(1)); |
| 2137 | |
| 2138 | // Offset in number of bits from double word boundary. |
| 2139 | unsigned OffsetDW = (Offset % 8) * 8; |
| 2140 | unsigned Shamt = isLittle ? OffsetDW : 64 - (OffsetDW + LoadSize * 8); |
| 2141 | SDValue Shift = DAG.getNode(ISD::SHL, dl, MVT::i64, LoadVal, |
| 2142 | DAG.getConstant(Shamt, MVT::i32)); |
| 2143 | |
| 2144 | Val = Val.getNode() ? DAG.getNode(ISD::OR, dl, MVT::i64, Val, Shift) : |
| 2145 | Shift; |
| 2146 | Offset += LoadSize; |
| 2147 | Alignment = std::min(Alignment, LoadSize); |
| 2148 | } |
| 2149 | |
| 2150 | RegsToPass.push_back(std::make_pair(*Reg, Val)); |
| 2151 | return; |
| 2152 | } |
| 2153 | } |
| 2154 | |
Akira Hatanaka | 1604085 | 2011-11-15 18:42:25 +0000 | [diff] [blame] | 2155 | assert(MemCpySize && "MemCpySize must not be zero."); |
| 2156 | |
| 2157 | // Create a fixed object on stack at offset LocMemOffset and copy |
| 2158 | // remainder of byval arg to it with memcpy. |
| 2159 | SDValue Src = DAG.getNode(ISD::ADD, dl, PtrTy, Arg, |
| 2160 | DAG.getConstant(Offset, PtrTy)); |
| 2161 | LastFI = MFI->CreateFixedObject(MemCpySize, LocMemOffset, true); |
| 2162 | SDValue Dst = DAG.getFrameIndex(LastFI, PtrTy); |
| 2163 | ByValChain = DAG.getMemcpy(ByValChain, dl, Dst, Src, |
| 2164 | DAG.getConstant(MemCpySize, PtrTy), Alignment, |
| 2165 | /*isVolatile=*/false, /*AlwaysInline=*/false, |
| 2166 | MachinePointerInfo(0), MachinePointerInfo(0)); |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2167 | } |
| 2168 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2169 | /// LowerCall - functions arguments are copied from virtual regs to |
Nate Begeman | 5bf4b75 | 2009-01-26 03:15:54 +0000 | [diff] [blame] | 2170 | /// (physical regs)/(stack frame), CALLSEQ_START and CALLSEQ_END are emitted. |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2171 | /// TODO: isTailCall. |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2172 | SDValue |
Akira Hatanaka | da7f5f1 | 2011-09-19 20:26:02 +0000 | [diff] [blame] | 2173 | MipsTargetLowering::LowerCall(SDValue InChain, SDValue Callee, |
Sandeep Patel | 65c3c8f | 2009-09-02 08:44:58 +0000 | [diff] [blame] | 2174 | CallingConv::ID CallConv, bool isVarArg, |
Evan Cheng | 0c439eb | 2010-01-27 00:07:07 +0000 | [diff] [blame] | 2175 | bool &isTailCall, |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2176 | const SmallVectorImpl<ISD::OutputArg> &Outs, |
Dan Gohman | c940365 | 2010-07-07 15:54:55 +0000 | [diff] [blame] | 2177 | const SmallVectorImpl<SDValue> &OutVals, |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2178 | const SmallVectorImpl<ISD::InputArg> &Ins, |
| 2179 | DebugLoc dl, SelectionDAG &DAG, |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 2180 | SmallVectorImpl<SDValue> &InVals) const { |
Evan Cheng | 0c439eb | 2010-01-27 00:07:07 +0000 | [diff] [blame] | 2181 | // MIPs target does not yet support tail call optimization. |
| 2182 | isTailCall = false; |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2183 | |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2184 | MachineFunction &MF = DAG.getMachineFunction(); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2185 | MachineFrameInfo *MFI = MF.getFrameInfo(); |
Akira Hatanaka | d37776d | 2011-05-20 21:39:54 +0000 | [diff] [blame] | 2186 | const TargetFrameLowering *TFL = MF.getTarget().getFrameLowering(); |
Bruno Cardoso Lopes | c517cb0 | 2009-09-01 17:27:58 +0000 | [diff] [blame] | 2187 | bool IsPIC = getTargetMachine().getRelocationModel() == Reloc::PIC_; |
Akira Hatanaka | 17a1e87 | 2011-05-20 18:39:33 +0000 | [diff] [blame] | 2188 | MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>(); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2189 | |
| 2190 | // Analyze operands of the call, assigning locations to each operand. |
| 2191 | SmallVector<CCValAssign, 16> ArgLocs; |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 2192 | CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2193 | getTargetMachine(), ArgLocs, *DAG.getContext()); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2194 | |
Akira Hatanaka | 2ec69fa | 2011-10-28 18:47:24 +0000 | [diff] [blame] | 2195 | if (IsO32) |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 2196 | CCInfo.AnalyzeCallOperands(Outs, CC_MipsO32); |
Akira Hatanaka | 4961709 | 2011-11-14 19:02:54 +0000 | [diff] [blame] | 2197 | else if (HasMips64) |
| 2198 | AnalyzeMips64CallOperands(CCInfo, Outs); |
Akira Hatanaka | bdd2ce9 | 2011-05-23 21:13:59 +0000 | [diff] [blame] | 2199 | else |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2200 | CCInfo.AnalyzeCallOperands(Outs, CC_Mips); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2201 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2202 | // 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] | 2203 | unsigned NextStackOffset = CCInfo.getNextStackOffset(); |
| 2204 | |
Akira Hatanaka | da7f5f1 | 2011-09-19 20:26:02 +0000 | [diff] [blame] | 2205 | // Chain is the output chain of the last Load/Store or CopyToReg node. |
| 2206 | // ByValChain is the output chain of the last Memcpy node created for copying |
| 2207 | // byval arguments to the stack. |
| 2208 | SDValue Chain, CallSeqStart, ByValChain; |
| 2209 | SDValue NextStackOffsetVal = DAG.getIntPtrConstant(NextStackOffset, true); |
| 2210 | Chain = CallSeqStart = DAG.getCALLSEQ_START(InChain, NextStackOffsetVal); |
| 2211 | ByValChain = InChain; |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2212 | |
| 2213 | // If this is the first call, create a stack frame object that points to |
| 2214 | // a location to which .cprestore saves $gp. |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2215 | if (IsO32 && IsPIC && !MipsFI->getGPFI()) |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2216 | MipsFI->setGPFI(MFI->CreateFixedObject(4, 0, true)); |
| 2217 | |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 2218 | // Get the frame index of the stack frame object that points to the location |
| 2219 | // of dynamically allocated area on the stack. |
| 2220 | int DynAllocFI = MipsFI->getDynAllocFI(); |
| 2221 | |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2222 | // Update size of the maximum argument space. |
| 2223 | // For O32, a minimum of four words (16 bytes) of argument space is |
| 2224 | // allocated. |
Akira Hatanaka | 2ec69fa | 2011-10-28 18:47:24 +0000 | [diff] [blame] | 2225 | if (IsO32) |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2226 | NextStackOffset = std::max(NextStackOffset, (unsigned)16); |
| 2227 | |
| 2228 | unsigned MaxCallFrameSize = MipsFI->getMaxCallFrameSize(); |
| 2229 | |
| 2230 | if (MaxCallFrameSize < NextStackOffset) { |
| 2231 | MipsFI->setMaxCallFrameSize(NextStackOffset); |
| 2232 | |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 2233 | // Set the offsets relative to $sp of the $gp restore slot and dynamically |
| 2234 | // allocated stack space. These offsets must be aligned to a boundary |
| 2235 | // determined by the stack alignment of the ABI. |
| 2236 | unsigned StackAlignment = TFL->getStackAlignment(); |
| 2237 | NextStackOffset = (NextStackOffset + StackAlignment - 1) / |
| 2238 | StackAlignment * StackAlignment; |
| 2239 | |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2240 | if (MipsFI->needGPSaveRestore()) |
Akira Hatanaka | 21afc63 | 2011-06-21 00:40:49 +0000 | [diff] [blame] | 2241 | MFI->setObjectOffset(MipsFI->getGPFI(), NextStackOffset); |
| 2242 | |
| 2243 | MFI->setObjectOffset(DynAllocFI, NextStackOffset); |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2244 | } |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2245 | |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2246 | // With EABI is it possible to have 16 args on registers. |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 2247 | SmallVector<std::pair<unsigned, SDValue>, 16> RegsToPass; |
| 2248 | SmallVector<SDValue, 8> MemOpChains; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2249 | |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 2250 | int FirstFI = -MFI->getNumFixedObjects() - 1, LastFI = 0; |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 2251 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2252 | // Walk the register/memloc assignments, inserting copies/loads. |
| 2253 | for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) { |
Dan Gohman | c940365 | 2010-07-07 15:54:55 +0000 | [diff] [blame] | 2254 | SDValue Arg = OutVals[i]; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2255 | CCValAssign &VA = ArgLocs[i]; |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2256 | MVT ValVT = VA.getValVT(), LocVT = VA.getLocVT(); |
Akira Hatanaka | 6df3e7b | 2011-11-12 02:34:50 +0000 | [diff] [blame] | 2257 | ISD::ArgFlagsTy Flags = Outs[i].Flags; |
| 2258 | |
| 2259 | // ByVal Arg. |
| 2260 | if (Flags.isByVal()) { |
| 2261 | assert(Flags.getByValSize() && |
| 2262 | "ByVal args of size 0 should have been ignored by front-end."); |
| 2263 | if (IsO32) |
| 2264 | WriteByValArg(ByValChain, Chain, dl, RegsToPass, MemOpChains, LastFI, |
| 2265 | MFI, DAG, Arg, VA, Flags, getPointerTy(), |
| 2266 | Subtarget->isLittle()); |
| 2267 | else |
| 2268 | PassByValArg64(ByValChain, Chain, dl, RegsToPass, MemOpChains, LastFI, |
| 2269 | MFI, DAG, Arg, VA, Flags, getPointerTy(), |
| 2270 | Subtarget->isLittle()); |
| 2271 | continue; |
| 2272 | } |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2273 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2274 | // Promote the value if needed. |
| 2275 | switch (VA.getLocInfo()) { |
Torok Edwin | c23197a | 2009-07-14 16:55:14 +0000 | [diff] [blame] | 2276 | default: llvm_unreachable("Unknown loc info!"); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2277 | case CCValAssign::Full: |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2278 | if (VA.isRegLoc()) { |
| 2279 | if ((ValVT == MVT::f32 && LocVT == MVT::i32) || |
| 2280 | (ValVT == MVT::f64 && LocVT == MVT::i64)) |
| 2281 | Arg = DAG.getNode(ISD::BITCAST, dl, LocVT, Arg); |
| 2282 | else if (ValVT == MVT::f64 && LocVT == MVT::i32) { |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2283 | SDValue Lo = DAG.getNode(MipsISD::ExtractElementF64, dl, MVT::i32, |
| 2284 | Arg, DAG.getConstant(0, MVT::i32)); |
Akira Hatanaka | 0bf3dfb | 2011-04-15 21:00:26 +0000 | [diff] [blame] | 2285 | SDValue Hi = DAG.getNode(MipsISD::ExtractElementF64, dl, MVT::i32, |
| 2286 | Arg, DAG.getConstant(1, MVT::i32)); |
Akira Hatanaka | 99a2e98 | 2011-04-15 19:52:08 +0000 | [diff] [blame] | 2287 | if (!Subtarget->isLittle()) |
| 2288 | std::swap(Lo, Hi); |
Akira Hatanaka | 373e3a4 | 2011-09-23 00:58:33 +0000 | [diff] [blame] | 2289 | unsigned LocRegLo = VA.getLocReg(); |
| 2290 | unsigned LocRegHigh = getNextIntArgReg(LocRegLo); |
| 2291 | RegsToPass.push_back(std::make_pair(LocRegLo, Lo)); |
| 2292 | RegsToPass.push_back(std::make_pair(LocRegHigh, Hi)); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2293 | continue; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2294 | } |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2295 | } |
| 2296 | break; |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2297 | case CCValAssign::SExt: |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2298 | Arg = DAG.getNode(ISD::SIGN_EXTEND, dl, LocVT, Arg); |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2299 | break; |
| 2300 | case CCValAssign::ZExt: |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2301 | Arg = DAG.getNode(ISD::ZERO_EXTEND, dl, LocVT, Arg); |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2302 | break; |
| 2303 | case CCValAssign::AExt: |
Akira Hatanaka | 25dae8f | 2012-01-24 23:18:43 +0000 | [diff] [blame] | 2304 | if (ValVT == MVT::i32) |
| 2305 | Arg = DAG.getNode(ISD::SIGN_EXTEND, dl, LocVT, Arg); |
| 2306 | else |
| 2307 | Arg = DAG.getNode(ISD::ANY_EXTEND, dl, LocVT, Arg); |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2308 | break; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2309 | } |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2310 | |
| 2311 | // Arguments that can be passed on register must be kept at |
Bruno Cardoso Lopes | c7db561 | 2007-11-05 03:02:32 +0000 | [diff] [blame] | 2312 | // RegsToPass vector |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2313 | if (VA.isRegLoc()) { |
| 2314 | RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg)); |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2315 | continue; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2316 | } |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2317 | |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2318 | // Register can't get to this point... |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2319 | assert(VA.isMemLoc()); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2320 | |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2321 | // Create the frame index object for this incoming parameter |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2322 | LastFI = MFI->CreateFixedObject(ValVT.getSizeInBits()/8, |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 2323 | VA.getLocMemOffset(), true); |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 2324 | SDValue PtrOff = DAG.getFrameIndex(LastFI, getPointerTy()); |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2325 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2326 | // emit ISD::STORE whichs stores the |
Chris Lattner | e0b1215 | 2008-03-17 06:57:02 +0000 | [diff] [blame] | 2327 | // parameter value to a stack Location |
Chris Lattner | 8026a9d | 2010-09-21 17:50:43 +0000 | [diff] [blame] | 2328 | MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2329 | MachinePointerInfo(), false, false, 0)); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2330 | } |
| 2331 | |
Akira Hatanaka | 3d21c24 | 2011-06-08 17:39:33 +0000 | [diff] [blame] | 2332 | // Extend range of indices of frame objects for outgoing arguments that were |
| 2333 | // created during this function call. Skip this step if no such objects were |
| 2334 | // created. |
| 2335 | if (LastFI) |
| 2336 | MipsFI->extendOutArgFIRange(FirstFI, LastFI); |
| 2337 | |
Akira Hatanaka | da7f5f1 | 2011-09-19 20:26:02 +0000 | [diff] [blame] | 2338 | // If a memcpy has been created to copy a byval arg to a stack, replace the |
| 2339 | // chain input of CallSeqStart with ByValChain. |
| 2340 | if (InChain != ByValChain) |
| 2341 | DAG.UpdateNodeOperands(CallSeqStart.getNode(), ByValChain, |
| 2342 | NextStackOffsetVal); |
| 2343 | |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2344 | // Transform all store nodes into one single node because all store |
| 2345 | // nodes are independent of each other. |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2346 | if (!MemOpChains.empty()) |
| 2347 | Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2348 | &MemOpChains[0], MemOpChains.size()); |
| 2349 | |
Bill Wendling | 056292f | 2008-09-16 21:48:12 +0000 | [diff] [blame] | 2350 | // If the callee is a GlobalAddress/ExternalSymbol node (quite common, every |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2351 | // direct call is) turn it into a TargetGlobalAddress/TargetExternalSymbol |
| 2352 | // node so that legalize doesn't hack it. |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2353 | unsigned char OpFlag; |
| 2354 | bool IsPICCall = (IsN64 || IsPIC); // true if calls are translated to jalr $25 |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 2355 | bool GlobalOrExternal = false; |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 2356 | SDValue CalleeLo; |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2357 | |
| 2358 | if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) { |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2359 | if (IsPICCall && G->getGlobal()->hasInternalLinkage()) { |
| 2360 | OpFlag = IsO32 ? MipsII::MO_GOT : MipsII::MO_GOT_PAGE; |
| 2361 | unsigned char LoFlag = IsO32 ? MipsII::MO_ABS_LO : MipsII::MO_GOT_OFST; |
| 2362 | Callee = DAG.getTargetGlobalAddress(G->getGlobal(), dl, getPointerTy(), 0, |
| 2363 | OpFlag); |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 2364 | CalleeLo = DAG.getTargetGlobalAddress(G->getGlobal(), dl, getPointerTy(), |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2365 | 0, LoFlag); |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 2366 | } else { |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2367 | OpFlag = IsPICCall ? MipsII::MO_GOT_CALL : MipsII::MO_NO_FLAG; |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 2368 | Callee = DAG.getTargetGlobalAddress(G->getGlobal(), dl, |
| 2369 | getPointerTy(), 0, OpFlag); |
| 2370 | } |
| 2371 | |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 2372 | GlobalOrExternal = true; |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2373 | } |
| 2374 | else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) { |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2375 | if (IsN64 || (!IsO32 && IsPIC)) |
| 2376 | OpFlag = MipsII::MO_GOT_DISP; |
| 2377 | else if (!IsPIC) // !N64 && static |
| 2378 | OpFlag = MipsII::MO_NO_FLAG; |
| 2379 | else // O32 & PIC |
| 2380 | OpFlag = MipsII::MO_GOT_CALL; |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2381 | Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy(), |
| 2382 | OpFlag); |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 2383 | GlobalOrExternal = true; |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2384 | } |
| 2385 | |
Akira Hatanaka | cd0f90f | 2011-05-20 02:30:51 +0000 | [diff] [blame] | 2386 | SDValue InFlag; |
| 2387 | |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2388 | // Create nodes that load address of callee and copy it to T9 |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2389 | if (IsPICCall) { |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 2390 | if (GlobalOrExternal) { |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 2391 | // Load callee address |
Akira Hatanaka | 6df7e23 | 2011-12-09 01:53:17 +0000 | [diff] [blame] | 2392 | Callee = DAG.getNode(MipsISD::Wrapper, dl, getPointerTy(), Callee); |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2393 | SDValue LoadValue = DAG.getLoad(getPointerTy(), dl, DAG.getEntryNode(), |
| 2394 | Callee, MachinePointerInfo::getGOT(), |
Pete Cooper | d752e0f | 2011-11-08 18:42:53 +0000 | [diff] [blame] | 2395 | false, false, false, 0); |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 2396 | |
| 2397 | // Use GOT+LO if callee has internal linkage. |
| 2398 | if (CalleeLo.getNode()) { |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2399 | SDValue Lo = DAG.getNode(MipsISD::Lo, dl, getPointerTy(), CalleeLo); |
| 2400 | Callee = DAG.getNode(ISD::ADD, dl, getPointerTy(), LoadValue, Lo); |
Akira Hatanaka | 9777e7a | 2011-04-07 19:51:44 +0000 | [diff] [blame] | 2401 | } else |
| 2402 | Callee = LoadValue; |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2403 | } |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 2404 | } |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2405 | |
Akira Hatanaka | 0dca945 | 2011-12-09 01:45:12 +0000 | [diff] [blame] | 2406 | // T9 should contain the address of the callee function if |
| 2407 | // -reloction-model=pic or it is an indirect call. |
| 2408 | if (IsPICCall || !GlobalOrExternal) { |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2409 | // copy to T9 |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2410 | unsigned T9Reg = IsN64 ? Mips::T9_64 : Mips::T9; |
| 2411 | Chain = DAG.getCopyToReg(Chain, dl, T9Reg, Callee, SDValue(0, 0)); |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2412 | InFlag = Chain.getValue(1); |
Akira Hatanaka | e42f33b | 2011-10-28 19:49:00 +0000 | [diff] [blame] | 2413 | Callee = DAG.getRegister(T9Reg, getPointerTy()); |
Akira Hatanaka | f49fde2 | 2011-04-04 17:11:07 +0000 | [diff] [blame] | 2414 | } |
Bill Wendling | 056292f | 2008-09-16 21:48:12 +0000 | [diff] [blame] | 2415 | |
Akira Hatanaka | cd0f90f | 2011-05-20 02:30:51 +0000 | [diff] [blame] | 2416 | // Build a sequence of copy-to-reg nodes chained together with token |
| 2417 | // chain and flag operands which copy the outgoing args into registers. |
| 2418 | // The InFlag in necessary since all emitted instructions must be |
| 2419 | // stuck together. |
| 2420 | for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) { |
| 2421 | Chain = DAG.getCopyToReg(Chain, dl, RegsToPass[i].first, |
| 2422 | RegsToPass[i].second, InFlag); |
| 2423 | InFlag = Chain.getValue(1); |
| 2424 | } |
| 2425 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2426 | // MipsJmpLink = #chain, #target_address, #opt_in_flags... |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2427 | // = Chain, Callee, Reg#1, Reg#2, ... |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2428 | // |
| 2429 | // Returns a chain & a flag for retval copy to use. |
Chris Lattner | f1b4eaf | 2010-12-21 02:38:05 +0000 | [diff] [blame] | 2430 | SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue); |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 2431 | SmallVector<SDValue, 8> Ops; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2432 | Ops.push_back(Chain); |
| 2433 | Ops.push_back(Callee); |
| 2434 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2435 | // 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] | 2436 | // known live into the call. |
| 2437 | for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) |
| 2438 | Ops.push_back(DAG.getRegister(RegsToPass[i].first, |
| 2439 | RegsToPass[i].second.getValueType())); |
| 2440 | |
Gabor Greif | ba36cb5 | 2008-08-28 21:40:38 +0000 | [diff] [blame] | 2441 | if (InFlag.getNode()) |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2442 | Ops.push_back(InFlag); |
| 2443 | |
Dale Johannesen | 33c960f | 2009-02-04 20:06:27 +0000 | [diff] [blame] | 2444 | Chain = DAG.getNode(MipsISD::JmpLink, dl, NodeTys, &Ops[0], Ops.size()); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2445 | InFlag = Chain.getValue(1); |
| 2446 | |
Bruno Cardoso Lopes | 3ed6f87 | 2010-01-30 18:32:07 +0000 | [diff] [blame] | 2447 | // Create the CALLSEQ_END node. |
Akira Hatanaka | 5f7451f | 2011-06-21 01:02:03 +0000 | [diff] [blame] | 2448 | Chain = DAG.getCALLSEQ_END(Chain, |
| 2449 | DAG.getIntPtrConstant(NextStackOffset, true), |
Bruno Cardoso Lopes | 3ed6f87 | 2010-01-30 18:32:07 +0000 | [diff] [blame] | 2450 | DAG.getIntPtrConstant(0, true), InFlag); |
| 2451 | InFlag = Chain.getValue(1); |
| 2452 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2453 | // Handle result values, copying them out of physregs into vregs that we |
| 2454 | // return. |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2455 | return LowerCallResult(Chain, InFlag, CallConv, isVarArg, |
| 2456 | Ins, dl, DAG, InVals); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2457 | } |
| 2458 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2459 | /// LowerCallResult - Lower the result values of a call into the |
| 2460 | /// appropriate copies out of appropriate physical registers. |
| 2461 | SDValue |
| 2462 | MipsTargetLowering::LowerCallResult(SDValue Chain, SDValue InFlag, |
Sandeep Patel | 65c3c8f | 2009-09-02 08:44:58 +0000 | [diff] [blame] | 2463 | CallingConv::ID CallConv, bool isVarArg, |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2464 | const SmallVectorImpl<ISD::InputArg> &Ins, |
| 2465 | DebugLoc dl, SelectionDAG &DAG, |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 2466 | SmallVectorImpl<SDValue> &InVals) const { |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2467 | // Assign locations to each value returned by this call. |
| 2468 | SmallVector<CCValAssign, 16> RVLocs; |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 2469 | CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), |
| 2470 | getTargetMachine(), RVLocs, *DAG.getContext()); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2471 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2472 | CCInfo.AnalyzeCallResult(Ins, RetCC_Mips); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2473 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2474 | // Copy all of the result registers out of their specified physreg. |
| 2475 | for (unsigned i = 0; i != RVLocs.size(); ++i) { |
Dale Johannesen | 33c960f | 2009-02-04 20:06:27 +0000 | [diff] [blame] | 2476 | Chain = DAG.getCopyFromReg(Chain, dl, RVLocs[i].getLocReg(), |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2477 | RVLocs[i].getValVT(), InFlag).getValue(1); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2478 | InFlag = Chain.getValue(2); |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2479 | InVals.push_back(Chain.getValue(0)); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2480 | } |
Bruno Cardoso Lopes | c7db561 | 2007-11-05 03:02:32 +0000 | [diff] [blame] | 2481 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2482 | return Chain; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2483 | } |
| 2484 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2485 | //===----------------------------------------------------------------------===// |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2486 | // Formal Arguments Calling Convention Implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2487 | //===----------------------------------------------------------------------===// |
Akira Hatanaka | 4231c7e | 2011-05-24 19:18:33 +0000 | [diff] [blame] | 2488 | static void ReadByValArg(MachineFunction &MF, SDValue Chain, DebugLoc dl, |
| 2489 | std::vector<SDValue>& OutChains, |
| 2490 | SelectionDAG &DAG, unsigned NumWords, SDValue FIN, |
| 2491 | const CCValAssign &VA, const ISD::ArgFlagsTy& Flags) { |
| 2492 | unsigned LocMem = VA.getLocMemOffset(); |
| 2493 | unsigned FirstWord = LocMem / 4; |
| 2494 | |
| 2495 | // copy register A0 - A3 to frame object |
| 2496 | for (unsigned i = 0; i < NumWords; ++i) { |
| 2497 | unsigned CurWord = FirstWord + i; |
| 2498 | if (CurWord >= O32IntRegsSize) |
| 2499 | break; |
| 2500 | |
| 2501 | unsigned SrcReg = O32IntRegs[CurWord]; |
| 2502 | unsigned Reg = AddLiveIn(MF, SrcReg, Mips::CPURegsRegisterClass); |
| 2503 | SDValue StorePtr = DAG.getNode(ISD::ADD, dl, MVT::i32, FIN, |
| 2504 | DAG.getConstant(i * 4, MVT::i32)); |
| 2505 | SDValue Store = DAG.getStore(Chain, dl, DAG.getRegister(Reg, MVT::i32), |
| 2506 | StorePtr, MachinePointerInfo(), false, |
| 2507 | false, 0); |
| 2508 | OutChains.push_back(Store); |
| 2509 | } |
| 2510 | } |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2511 | |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 2512 | // Create frame object on stack and copy registers used for byval passing to it. |
| 2513 | static unsigned |
| 2514 | CopyMips64ByValRegs(MachineFunction &MF, SDValue Chain, DebugLoc dl, |
| 2515 | std::vector<SDValue>& OutChains, SelectionDAG &DAG, |
| 2516 | const CCValAssign &VA, const ISD::ArgFlagsTy& Flags, |
| 2517 | MachineFrameInfo *MFI, bool IsRegLoc, |
| 2518 | SmallVectorImpl<SDValue> &InVals, MipsFunctionInfo *MipsFI, |
| 2519 | EVT PtrTy) { |
| 2520 | const unsigned *Reg = Mips64IntRegs + 8; |
| 2521 | int FOOffset; // Frame object offset from virtual frame pointer. |
| 2522 | |
| 2523 | if (IsRegLoc) { |
| 2524 | Reg = std::find(Mips64IntRegs, Mips64IntRegs + 8, VA.getLocReg()); |
| 2525 | FOOffset = (Reg - Mips64IntRegs) * 8 - 8 * 8; |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 2526 | } |
| 2527 | else |
| 2528 | FOOffset = VA.getLocMemOffset(); |
| 2529 | |
| 2530 | // Create frame object. |
| 2531 | unsigned NumRegs = (Flags.getByValSize() + 7) / 8; |
| 2532 | unsigned LastFI = MFI->CreateFixedObject(NumRegs * 8, FOOffset, true); |
| 2533 | SDValue FIN = DAG.getFrameIndex(LastFI, PtrTy); |
| 2534 | InVals.push_back(FIN); |
| 2535 | |
| 2536 | // Copy arg registers. |
| 2537 | for (unsigned I = 0; (Reg != Mips64IntRegs + 8) && (I < NumRegs); |
| 2538 | ++Reg, ++I) { |
| 2539 | unsigned VReg = AddLiveIn(MF, *Reg, Mips::CPU64RegsRegisterClass); |
| 2540 | SDValue StorePtr = DAG.getNode(ISD::ADD, dl, PtrTy, FIN, |
| 2541 | DAG.getConstant(I * 8, PtrTy)); |
| 2542 | SDValue Store = DAG.getStore(Chain, dl, DAG.getRegister(VReg, MVT::i64), |
| 2543 | StorePtr, MachinePointerInfo(), false, |
| 2544 | false, 0); |
| 2545 | OutChains.push_back(Store); |
| 2546 | } |
| 2547 | |
| 2548 | return LastFI; |
| 2549 | } |
| 2550 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2551 | /// LowerFormalArguments - transform physical registers into virtual registers |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2552 | /// and generate load operations for arguments places on the stack. |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2553 | SDValue |
| 2554 | MipsTargetLowering::LowerFormalArguments(SDValue Chain, |
Akira Hatanaka | 0bf3dfb | 2011-04-15 21:00:26 +0000 | [diff] [blame] | 2555 | CallingConv::ID CallConv, |
| 2556 | bool isVarArg, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2557 | const SmallVectorImpl<ISD::InputArg> &Ins, |
Akira Hatanaka | 0bf3dfb | 2011-04-15 21:00:26 +0000 | [diff] [blame] | 2558 | DebugLoc dl, SelectionDAG &DAG, |
| 2559 | SmallVectorImpl<SDValue> &InVals) |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2560 | const { |
Bruno Cardoso Lopes | f7f3b50 | 2008-08-04 07:12:52 +0000 | [diff] [blame] | 2561 | MachineFunction &MF = DAG.getMachineFunction(); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2562 | MachineFrameInfo *MFI = MF.getFrameInfo(); |
Bruno Cardoso Lopes | a2b1bb5 | 2007-08-28 05:08:16 +0000 | [diff] [blame] | 2563 | MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>(); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2564 | |
Dan Gohman | 1e93df6 | 2010-04-17 14:41:14 +0000 | [diff] [blame] | 2565 | MipsFI->setVarArgsFrameIndex(0); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2566 | |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2567 | // Used with vargs to acumulate store chains. |
| 2568 | std::vector<SDValue> OutChains; |
| 2569 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2570 | // Assign locations to all of the incoming arguments. |
| 2571 | SmallVector<CCValAssign, 16> ArgLocs; |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 2572 | CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2573 | getTargetMachine(), ArgLocs, *DAG.getContext()); |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2574 | |
Akira Hatanaka | 2ec69fa | 2011-10-28 18:47:24 +0000 | [diff] [blame] | 2575 | if (IsO32) |
Akira Hatanaka | 95b8ae1 | 2011-05-19 18:06:05 +0000 | [diff] [blame] | 2576 | CCInfo.AnalyzeFormalArguments(Ins, CC_MipsO32); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2577 | else |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2578 | CCInfo.AnalyzeFormalArguments(Ins, CC_Mips); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2579 | |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 2580 | 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] | 2581 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2582 | for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) { |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2583 | CCValAssign &VA = ArgLocs[i]; |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 2584 | EVT ValVT = VA.getValVT(); |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 2585 | ISD::ArgFlagsTy Flags = Ins[i].Flags; |
| 2586 | bool IsRegLoc = VA.isRegLoc(); |
| 2587 | |
| 2588 | if (Flags.isByVal()) { |
| 2589 | assert(Flags.getByValSize() && |
| 2590 | "ByVal args of size 0 should have been ignored by front-end."); |
| 2591 | if (IsO32) { |
| 2592 | unsigned NumWords = (Flags.getByValSize() + 3) / 4; |
| 2593 | LastFI = MFI->CreateFixedObject(NumWords * 4, VA.getLocMemOffset(), |
| 2594 | true); |
| 2595 | SDValue FIN = DAG.getFrameIndex(LastFI, getPointerTy()); |
| 2596 | InVals.push_back(FIN); |
| 2597 | ReadByValArg(MF, Chain, dl, OutChains, DAG, NumWords, FIN, VA, Flags); |
| 2598 | } else // N32/64 |
| 2599 | LastFI = CopyMips64ByValRegs(MF, Chain, dl, OutChains, DAG, VA, Flags, |
| 2600 | MFI, IsRegLoc, InVals, MipsFI, |
| 2601 | getPointerTy()); |
| 2602 | continue; |
| 2603 | } |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2604 | |
| 2605 | // Arguments stored on registers |
Akira Hatanaka | 3a5257d | 2011-11-12 02:29:58 +0000 | [diff] [blame] | 2606 | if (IsRegLoc) { |
Owen Anderson | e50ed30 | 2009-08-10 22:56:29 +0000 | [diff] [blame] | 2607 | EVT RegVT = VA.getLocVT(); |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 2608 | unsigned ArgReg = VA.getLocReg(); |
Bill Wendling | 06b8c19 | 2008-07-09 05:55:53 +0000 | [diff] [blame] | 2609 | TargetRegisterClass *RC = 0; |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2610 | |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 2611 | if (RegVT == MVT::i32) |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2612 | RC = Mips::CPURegsRegisterClass; |
Akira Hatanaka | 9593484 | 2011-09-24 01:34:44 +0000 | [diff] [blame] | 2613 | else if (RegVT == MVT::i64) |
| 2614 | RC = Mips::CPU64RegsRegisterClass; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2615 | else if (RegVT == MVT::f32) |
Bruno Cardoso Lopes | bdfbb74 | 2009-03-21 00:05:07 +0000 | [diff] [blame] | 2616 | RC = Mips::FGR32RegisterClass; |
Akira Hatanaka | 09dd60f | 2011-09-26 21:37:50 +0000 | [diff] [blame] | 2617 | else if (RegVT == MVT::f64) |
Akira Hatanaka | f40de9d | 2011-09-26 21:55:17 +0000 | [diff] [blame] | 2618 | RC = HasMips64 ? Mips::FGR64RegisterClass : Mips::AFGR64RegisterClass; |
Akira Hatanaka | 09dd60f | 2011-09-26 21:37:50 +0000 | [diff] [blame] | 2619 | else |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2620 | llvm_unreachable("RegVT not supported by FormalArguments Lowering"); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2621 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2622 | // Transform the arguments stored on |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2623 | // physical registers into virtual ones |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 2624 | unsigned Reg = AddLiveIn(DAG.getMachineFunction(), ArgReg, RC); |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2625 | SDValue ArgValue = DAG.getCopyFromReg(Chain, dl, Reg, RegVT); |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2626 | |
| 2627 | // If this is an 8 or 16-bit value, it has been passed promoted |
| 2628 | // 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] | 2629 | // truncate to the right size. |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2630 | if (VA.getLocInfo() != CCValAssign::Full) { |
Chris Lattner | d401507 | 2009-03-26 05:28:14 +0000 | [diff] [blame] | 2631 | unsigned Opcode = 0; |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2632 | if (VA.getLocInfo() == CCValAssign::SExt) |
| 2633 | Opcode = ISD::AssertSext; |
| 2634 | else if (VA.getLocInfo() == CCValAssign::ZExt) |
| 2635 | Opcode = ISD::AssertZext; |
Chris Lattner | d401507 | 2009-03-26 05:28:14 +0000 | [diff] [blame] | 2636 | if (Opcode) |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2637 | ArgValue = DAG.getNode(Opcode, dl, RegVT, ArgValue, |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 2638 | DAG.getValueType(ValVT)); |
| 2639 | ArgValue = DAG.getNode(ISD::TRUNCATE, dl, ValVT, ArgValue); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2640 | } |
| 2641 | |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 2642 | // Handle floating point arguments passed in integer registers. |
| 2643 | if ((RegVT == MVT::i32 && ValVT == MVT::f32) || |
| 2644 | (RegVT == MVT::i64 && ValVT == MVT::f64)) |
| 2645 | ArgValue = DAG.getNode(ISD::BITCAST, dl, ValVT, ArgValue); |
| 2646 | else if (IsO32 && RegVT == MVT::i32 && ValVT == MVT::f64) { |
| 2647 | unsigned Reg2 = AddLiveIn(DAG.getMachineFunction(), |
| 2648 | getNextIntArgReg(ArgReg), RC); |
| 2649 | SDValue ArgValue2 = DAG.getCopyFromReg(Chain, dl, Reg2, RegVT); |
| 2650 | if (!Subtarget->isLittle()) |
| 2651 | std::swap(ArgValue, ArgValue2); |
| 2652 | ArgValue = DAG.getNode(MipsISD::BuildPairF64, dl, MVT::f64, |
| 2653 | ArgValue, ArgValue2); |
Bruno Cardoso Lopes | b53db4f | 2009-03-19 02:12:28 +0000 | [diff] [blame] | 2654 | } |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2655 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2656 | InVals.push_back(ArgValue); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2657 | } else { // VA.isRegLoc() |
| 2658 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2659 | // sanity check |
| 2660 | assert(VA.isMemLoc()); |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2661 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2662 | // The stack pointer offset is relative to the caller stack frame. |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 2663 | LastFI = MFI->CreateFixedObject(ValVT.getSizeInBits()/8, |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 2664 | VA.getLocMemOffset(), true); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2665 | |
| 2666 | // Create load nodes to retrieve arguments from the stack |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 2667 | SDValue FIN = DAG.getFrameIndex(LastFI, getPointerTy()); |
Akira Hatanaka | feaa4c3 | 2011-10-28 19:55:48 +0000 | [diff] [blame] | 2668 | InVals.push_back(DAG.getLoad(ValVT, dl, Chain, FIN, |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 2669 | MachinePointerInfo::getFixedStack(LastFI), |
Pete Cooper | d752e0f | 2011-11-08 18:42:53 +0000 | [diff] [blame] | 2670 | false, false, false, 0)); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2671 | } |
| 2672 | } |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2673 | |
| 2674 | // The mips ABIs for returning structs by value requires that we copy |
| 2675 | // the sret argument into $v0 for the return. Save the argument into |
| 2676 | // a virtual register so that we can access it from the return points. |
| 2677 | if (DAG.getMachineFunction().getFunction()->hasStructRetAttr()) { |
| 2678 | unsigned Reg = MipsFI->getSRetReturnReg(); |
| 2679 | if (!Reg) { |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 2680 | Reg = MF.getRegInfo().createVirtualRegister(getRegClassFor(MVT::i32)); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2681 | MipsFI->setSRetReturnReg(Reg); |
| 2682 | } |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2683 | SDValue Copy = DAG.getCopyToReg(DAG.getEntryNode(), dl, Reg, InVals[0]); |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 2684 | Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Copy, Chain); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2685 | } |
| 2686 | |
Akira Hatanaka | bad53f4 | 2011-11-14 19:01:09 +0000 | [diff] [blame] | 2687 | if (isVarArg) { |
| 2688 | unsigned NumOfRegs = IsO32 ? 4 : 8; |
| 2689 | const unsigned *ArgRegs = IsO32 ? O32IntRegs : Mips64IntRegs; |
| 2690 | unsigned Idx = CCInfo.getFirstUnallocated(ArgRegs, NumOfRegs); |
| 2691 | int FirstRegSlotOffset = IsO32 ? 0 : -64 ; // offset of $a0's slot. |
| 2692 | TargetRegisterClass *RC |
| 2693 | = IsO32 ? Mips::CPURegsRegisterClass : Mips::CPU64RegsRegisterClass; |
| 2694 | unsigned RegSize = RC->getSize(); |
| 2695 | int RegSlotOffset = FirstRegSlotOffset + Idx * RegSize; |
| 2696 | |
| 2697 | // Offset of the first variable argument from stack pointer. |
| 2698 | int FirstVaArgOffset; |
| 2699 | |
| 2700 | if (IsO32 || (Idx == NumOfRegs)) { |
| 2701 | FirstVaArgOffset = |
| 2702 | (CCInfo.getNextStackOffset() + RegSize - 1) / RegSize * RegSize; |
| 2703 | } else |
| 2704 | FirstVaArgOffset = RegSlotOffset; |
| 2705 | |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 2706 | // Record the frame index of the first variable argument |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 2707 | // which is a value necessary to VASTART. |
Akira Hatanaka | bad53f4 | 2011-11-14 19:01:09 +0000 | [diff] [blame] | 2708 | LastFI = MFI->CreateFixedObject(RegSize, FirstVaArgOffset, true); |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 2709 | MipsFI->setVarArgsFrameIndex(LastFI); |
Akira Hatanaka | edacba8 | 2011-05-25 17:32:06 +0000 | [diff] [blame] | 2710 | |
Akira Hatanaka | bad53f4 | 2011-11-14 19:01:09 +0000 | [diff] [blame] | 2711 | // Copy the integer registers that have not been used for argument passing |
| 2712 | // to the argument register save area. For O32, the save area is allocated |
| 2713 | // in the caller's stack frame, while for N32/64, it is allocated in the |
| 2714 | // callee's stack frame. |
| 2715 | for (int StackOffset = RegSlotOffset; |
| 2716 | Idx < NumOfRegs; ++Idx, StackOffset += RegSize) { |
| 2717 | unsigned Reg = AddLiveIn(DAG.getMachineFunction(), ArgRegs[Idx], RC); |
| 2718 | SDValue ArgValue = DAG.getCopyFromReg(Chain, dl, Reg, |
| 2719 | MVT::getIntegerVT(RegSize * 8)); |
| 2720 | LastFI = MFI->CreateFixedObject(RegSize, StackOffset, true); |
Akira Hatanaka | b4d8d31 | 2011-05-24 00:23:52 +0000 | [diff] [blame] | 2721 | SDValue PtrOff = DAG.getFrameIndex(LastFI, getPointerTy()); |
| 2722 | OutChains.push_back(DAG.getStore(Chain, dl, ArgValue, PtrOff, |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2723 | MachinePointerInfo(), false, false, 0)); |
Bruno Cardoso Lopes | b37a742 | 2010-02-06 19:20:49 +0000 | [diff] [blame] | 2724 | } |
| 2725 | } |
| 2726 | |
Akira Hatanaka | 4329977 | 2011-05-20 23:22:14 +0000 | [diff] [blame] | 2727 | MipsFI->setLastInArgFI(LastFI); |
| 2728 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2729 | // 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] | 2730 | // the size of Ins and InVals. This only happens when on varg functions |
| 2731 | if (!OutChains.empty()) { |
| 2732 | OutChains.push_back(Chain); |
| 2733 | Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, |
| 2734 | &OutChains[0], OutChains.size()); |
| 2735 | } |
| 2736 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2737 | return Chain; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2738 | } |
| 2739 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2740 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2741 | // Return Value Calling Convention Implementation |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2742 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2743 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2744 | SDValue |
| 2745 | MipsTargetLowering::LowerReturn(SDValue Chain, |
Sandeep Patel | 65c3c8f | 2009-09-02 08:44:58 +0000 | [diff] [blame] | 2746 | CallingConv::ID CallConv, bool isVarArg, |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2747 | const SmallVectorImpl<ISD::OutputArg> &Outs, |
Dan Gohman | c940365 | 2010-07-07 15:54:55 +0000 | [diff] [blame] | 2748 | const SmallVectorImpl<SDValue> &OutVals, |
Dan Gohman | d858e90 | 2010-04-17 15:26:15 +0000 | [diff] [blame] | 2749 | DebugLoc dl, SelectionDAG &DAG) const { |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2750 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2751 | // CCValAssign - represent the assignment of |
| 2752 | // the return value to a location |
| 2753 | SmallVector<CCValAssign, 16> RVLocs; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2754 | |
| 2755 | // CCState - Info about the registers and stack slot. |
Eric Christopher | 471e422 | 2011-06-08 23:55:35 +0000 | [diff] [blame] | 2756 | CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), |
| 2757 | getTargetMachine(), RVLocs, *DAG.getContext()); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2758 | |
Dan Gohman | 98ca4f2 | 2009-08-05 01:29:28 +0000 | [diff] [blame] | 2759 | // Analize return values. |
| 2760 | CCInfo.AnalyzeReturn(Outs, RetCC_Mips); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2761 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2762 | // If this is the first return lowered for this function, add |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2763 | // the regs to the liveout set for the function. |
Chris Lattner | 84bc542 | 2007-12-31 04:13:23 +0000 | [diff] [blame] | 2764 | if (DAG.getMachineFunction().getRegInfo().liveout_empty()) { |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2765 | for (unsigned i = 0; i != RVLocs.size(); ++i) |
Bruno Cardoso Lopes | 2ab22d1 | 2007-07-11 23:16:16 +0000 | [diff] [blame] | 2766 | if (RVLocs[i].isRegLoc()) |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2767 | DAG.getMachineFunction().getRegInfo().addLiveOut(RVLocs[i].getLocReg()); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2768 | } |
| 2769 | |
Dan Gohman | 475871a | 2008-07-27 21:46:04 +0000 | [diff] [blame] | 2770 | SDValue Flag; |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2771 | |
| 2772 | // Copy the result values into the output registers. |
| 2773 | for (unsigned i = 0; i != RVLocs.size(); ++i) { |
| 2774 | CCValAssign &VA = RVLocs[i]; |
| 2775 | assert(VA.isRegLoc() && "Can only return in registers!"); |
| 2776 | |
Akira Hatanaka | 8209968 | 2011-12-19 19:52:25 +0000 | [diff] [blame] | 2777 | Chain = DAG.getCopyToReg(Chain, dl, VA.getLocReg(), OutVals[i], Flag); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2778 | |
| 2779 | // guarantee that all emitted copies are |
| 2780 | // stuck together, avoiding something bad |
| 2781 | Flag = Chain.getValue(1); |
| 2782 | } |
| 2783 | |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2784 | // The mips ABIs for returning structs by value requires that we copy |
| 2785 | // the sret argument into $v0 for the return. We saved the argument into |
| 2786 | // a virtual register in the entry block, so now we copy the value out |
| 2787 | // and into $v0. |
| 2788 | if (DAG.getMachineFunction().getFunction()->hasStructRetAttr()) { |
| 2789 | MachineFunction &MF = DAG.getMachineFunction(); |
| 2790 | MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>(); |
| 2791 | unsigned Reg = MipsFI->getSRetReturnReg(); |
| 2792 | |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2793 | if (!Reg) |
Torok Edwin | c23197a | 2009-07-14 16:55:14 +0000 | [diff] [blame] | 2794 | llvm_unreachable("sret virtual register not created in the entry block"); |
Dale Johannesen | a05dca4 | 2009-02-04 23:02:30 +0000 | [diff] [blame] | 2795 | SDValue Val = DAG.getCopyFromReg(Chain, dl, Reg, getPointerTy()); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2796 | |
Dale Johannesen | a05dca4 | 2009-02-04 23:02:30 +0000 | [diff] [blame] | 2797 | Chain = DAG.getCopyToReg(Chain, dl, Mips::V0, Val, Flag); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2798 | Flag = Chain.getValue(1); |
| 2799 | } |
| 2800 | |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2801 | // Return on Mips is always a "jr $ra" |
Gabor Greif | ba36cb5 | 2008-08-28 21:40:38 +0000 | [diff] [blame] | 2802 | if (Flag.getNode()) |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2803 | return DAG.getNode(MipsISD::Ret, dl, MVT::Other, |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 2804 | Chain, DAG.getRegister(Mips::RA, MVT::i32), Flag); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2805 | else // Return Void |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2806 | return DAG.getNode(MipsISD::Ret, dl, MVT::Other, |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 2807 | Chain, DAG.getRegister(Mips::RA, MVT::i32)); |
Bruno Cardoso Lopes | 972f589 | 2007-06-06 07:42:06 +0000 | [diff] [blame] | 2808 | } |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2809 | |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2810 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2811 | // Mips Inline Assembly Support |
Akira Hatanaka | 4552c9a | 2011-04-15 21:51:11 +0000 | [diff] [blame] | 2812 | //===----------------------------------------------------------------------===// |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2813 | |
| 2814 | /// getConstraintType - Given a constraint letter, return the type of |
| 2815 | /// constraint it is for this target. |
| 2816 | MipsTargetLowering::ConstraintType MipsTargetLowering:: |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2817 | getConstraintType(const std::string &Constraint) const |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2818 | { |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2819 | // Mips specific constrainy |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2820 | // GCC config/mips/constraints.md |
| 2821 | // |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2822 | // 'd' : An address register. Equivalent to r |
| 2823 | // unless generating MIPS16 code. |
| 2824 | // 'y' : Equivalent to r; retained for |
| 2825 | // backwards compatibility. |
| 2826 | // 'f' : Floating Point registers. |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2827 | if (Constraint.size() == 1) { |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2828 | switch (Constraint[0]) { |
| 2829 | default : break; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2830 | case 'd': |
| 2831 | case 'y': |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2832 | case 'f': |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2833 | return C_RegisterClass; |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2834 | } |
| 2835 | } |
| 2836 | return TargetLowering::getConstraintType(Constraint); |
| 2837 | } |
| 2838 | |
John Thompson | 44ab89e | 2010-10-29 17:29:13 +0000 | [diff] [blame] | 2839 | /// Examine constraint type and operand type and determine a weight value. |
| 2840 | /// This object must already have been set up with the operand type |
| 2841 | /// and the current alternative constraint selected. |
| 2842 | TargetLowering::ConstraintWeight |
| 2843 | MipsTargetLowering::getSingleConstraintMatchWeight( |
| 2844 | AsmOperandInfo &info, const char *constraint) const { |
| 2845 | ConstraintWeight weight = CW_Invalid; |
| 2846 | Value *CallOperandVal = info.CallOperandVal; |
| 2847 | // If we don't have a value, we can't do a match, |
| 2848 | // but allow it at the lowest weight. |
| 2849 | if (CallOperandVal == NULL) |
| 2850 | return CW_Default; |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 2851 | Type *type = CallOperandVal->getType(); |
John Thompson | 44ab89e | 2010-10-29 17:29:13 +0000 | [diff] [blame] | 2852 | // Look at the constraint type. |
| 2853 | switch (*constraint) { |
| 2854 | default: |
| 2855 | weight = TargetLowering::getSingleConstraintMatchWeight(info, constraint); |
| 2856 | break; |
Wesley Peck | bf17cfa | 2010-11-23 03:31:01 +0000 | [diff] [blame] | 2857 | case 'd': |
| 2858 | case 'y': |
John Thompson | 44ab89e | 2010-10-29 17:29:13 +0000 | [diff] [blame] | 2859 | if (type->isIntegerTy()) |
| 2860 | weight = CW_Register; |
| 2861 | break; |
| 2862 | case 'f': |
| 2863 | if (type->isFloatTy()) |
| 2864 | weight = CW_Register; |
| 2865 | break; |
| 2866 | } |
| 2867 | return weight; |
| 2868 | } |
| 2869 | |
Eric Christopher | 38d6426 | 2011-06-29 19:33:04 +0000 | [diff] [blame] | 2870 | /// Given a register class constraint, like 'r', if this corresponds directly |
| 2871 | /// to an LLVM register class, return a register of 0 and the register class |
| 2872 | /// pointer. |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2873 | std::pair<unsigned, const TargetRegisterClass*> MipsTargetLowering:: |
Owen Anderson | e50ed30 | 2009-08-10 22:56:29 +0000 | [diff] [blame] | 2874 | getRegForInlineAsmConstraint(const std::string &Constraint, EVT VT) const |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2875 | { |
| 2876 | if (Constraint.size() == 1) { |
| 2877 | switch (Constraint[0]) { |
Eric Christopher | 314aff1 | 2011-06-29 19:04:31 +0000 | [diff] [blame] | 2878 | case 'd': // Address register. Same as 'r' unless generating MIPS16 code. |
| 2879 | case 'y': // Same as 'r'. Exists for compatibility. |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2880 | case 'r': |
Akira Hatanaka | cb9dd72 | 2012-01-04 02:45:01 +0000 | [diff] [blame] | 2881 | if (VT == MVT::i32) |
| 2882 | return std::make_pair(0U, Mips::CPURegsRegisterClass); |
| 2883 | assert(VT == MVT::i64 && "Unexpected type."); |
| 2884 | return std::make_pair(0U, Mips::CPU64RegsRegisterClass); |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2885 | case 'f': |
Owen Anderson | 825b72b | 2009-08-11 20:47:22 +0000 | [diff] [blame] | 2886 | if (VT == MVT::f32) |
Bruno Cardoso Lopes | bdfbb74 | 2009-03-21 00:05:07 +0000 | [diff] [blame] | 2887 | return std::make_pair(0U, Mips::FGR32RegisterClass); |
Akira Hatanaka | cb9dd72 | 2012-01-04 02:45:01 +0000 | [diff] [blame] | 2888 | if ((VT == MVT::f64) && (!Subtarget->isSingleFloat())) { |
| 2889 | if (Subtarget->isFP64bit()) |
| 2890 | return std::make_pair(0U, Mips::FGR64RegisterClass); |
| 2891 | else |
Bruno Cardoso Lopes | 225ca9c | 2008-07-05 19:05:21 +0000 | [diff] [blame] | 2892 | return std::make_pair(0U, Mips::AFGR64RegisterClass); |
Akira Hatanaka | cb9dd72 | 2012-01-04 02:45:01 +0000 | [diff] [blame] | 2893 | } |
Bruno Cardoso Lopes | 84f47c5 | 2007-08-21 16:09:25 +0000 | [diff] [blame] | 2894 | } |
| 2895 | } |
| 2896 | return TargetLowering::getRegForInlineAsmConstraint(Constraint, VT); |
| 2897 | } |
| 2898 | |
Dan Gohman | 6520e20 | 2008-10-18 02:06:02 +0000 | [diff] [blame] | 2899 | bool |
| 2900 | MipsTargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const { |
| 2901 | // The Mips target isn't yet aware of offsets. |
| 2902 | return false; |
| 2903 | } |
Evan Cheng | eb2f969 | 2009-10-27 19:56:55 +0000 | [diff] [blame] | 2904 | |
Evan Cheng | a1eaa3c | 2009-10-28 01:43:28 +0000 | [diff] [blame] | 2905 | bool MipsTargetLowering::isFPImmLegal(const APFloat &Imm, EVT VT) const { |
| 2906 | if (VT != MVT::f32 && VT != MVT::f64) |
| 2907 | return false; |
Bruno Cardoso Lopes | 6b90282 | 2011-01-18 19:41:41 +0000 | [diff] [blame] | 2908 | if (Imm.isNegZero()) |
| 2909 | return false; |
Evan Cheng | eb2f969 | 2009-10-27 19:56:55 +0000 | [diff] [blame] | 2910 | return Imm.isZero(); |
| 2911 | } |
Akira Hatanaka | 6c2cf8b | 2012-02-03 04:33:00 +0000 | [diff] [blame^] | 2912 | |
| 2913 | unsigned MipsTargetLowering::getJumpTableEncoding() const { |
| 2914 | if (IsN64) |
| 2915 | return MachineJumpTableInfo::EK_GPRel64BlockAddress; |
| 2916 | |
| 2917 | return TargetLowering::getJumpTableEncoding(); |
| 2918 | } |