1//===-- M68kInstrData.td - M68k Data Movement Instructions -*- tablegen -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8/// 9/// \file 10/// This file describes the Motorola 680x0 data movement instructions which are 11/// the basic means of transferring and storing addresses and data. Here is the 12/// current status of the file: 13/// 14/// Machine: 15/// 16/// EXG [ ] FMOVE [ ] FSMOVE [ ] FDMOVE [ ] FMOVEM [ ] 17/// LEA [~] PEA [ ] MOVE [~] MOVE16 [ ] MOVEA [ ] 18/// MOVEM [ ] MOVEP [ ] MOVEQ [ ] LINK [~] UNLK [~] 19/// 20/// Pseudo: 21/// 22/// MOVSX [x] MOVZX [x] MOVX [x] 23/// 24/// Map: 25/// 26/// [ ] - was not touched at all 27/// [!] - requires extarnal stuff implemented 28/// [~] - in progress but usable 29/// [x] - done 30/// 31//===----------------------------------------------------------------------===// 32 33//===----------------------------------------------------------------------===// 34// MOVE 35//===----------------------------------------------------------------------===// 36 37/// ----------------------------------------------------- 38/// F E | D C | B A 9 | 8 7 6 | 5 4 3 | 2 1 0 39/// ----------------------------------------------------- 40/// | | DESTINATION | SOURCE 41/// 0 0 | SIZE | REG | MODE | MODE | REG 42/// ----------------------------------------------------- 43/// 44/// NOTE Move requires EA X version for direct register destination(0) 45 46// MOVE has a different size encoding. 47class MxMoveSize<bits<2> value> { 48 bits<2> Value = value; 49} 50def MxMoveSize8 : MxMoveSize<0b01>; 51def MxMoveSize16 : MxMoveSize<0b11>; 52def MxMoveSize32 : MxMoveSize<0b10>; 53 54class MxMoveEncoding<MxMoveSize size, MxEncMemOp dst_enc, MxEncMemOp src_enc> { 55 dag Value = (ascend 56 (descend 0b00, size.Value, 57 !cond( 58 !eq(!getdagop(dst_enc.EA), descend): !setdagop(dst_enc.EA, ascend), 59 !eq(!getdagop(dst_enc.EA), ascend): !setdagop(dst_enc.EA, descend)), 60 src_enc.EA), 61 // Source extension 62 src_enc.Supplement, 63 // Destination extension 64 dst_enc.Supplement 65 ); 66} 67 68// Special encoding for Xn 69class MxMoveEncAddrMode_r<string reg_opnd> : MxEncMemOp { 70 let EA = (descend (descend 0b00, (slice "$"#reg_opnd, 3, 3)), 71 (operand "$"#reg_opnd, 3)); 72} 73 74// TODO: Generalize and adopt this utility in other .td files as well. 75multiclass MxMoveOperandEncodings<string opnd_name> { 76 // Dn 77 def MxMove#NAME#OpEnc_d : MxEncAddrMode_d<opnd_name>; 78 // An 79 def MxMove#NAME#OpEnc_a : MxEncAddrMode_a<opnd_name>; 80 // Xn 81 def MxMove#NAME#OpEnc_r : MxMoveEncAddrMode_r<opnd_name>; 82 // (An)+ 83 def MxMove#NAME#OpEnc_o : MxEncAddrMode_o<opnd_name>; 84 // -(An) 85 def MxMove#NAME#OpEnc_e : MxEncAddrMode_e<opnd_name>; 86 // (i,PC,Xn) 87 def MxMove#NAME#OpEnc_k : MxEncAddrMode_k<opnd_name>; 88 // (i,PC) 89 def MxMove#NAME#OpEnc_q : MxEncAddrMode_q<opnd_name>; 90 // (i,An,Xn) 91 def MxMove#NAME#OpEnc_f : MxEncAddrMode_f<opnd_name>; 92 // (i,An) 93 def MxMove#NAME#OpEnc_p : MxEncAddrMode_p<opnd_name>; 94 // (ABS).L 95 def MxMove#NAME#OpEnc_b : MxEncAddrMode_abs<opnd_name, /*W/L=*/true>; 96 // (An) 97 def MxMove#NAME#OpEnc_j : MxEncAddrMode_j<opnd_name>; 98} 99 100defm Src : MxMoveOperandEncodings<"src">; 101defm Dst : MxMoveOperandEncodings<"dst">; 102 103defvar MxMoveSupportedAMs = ["o", "e", "k", "q", "f", "p", "b", "j"]; 104 105let Defs = [CCR] in 106class MxMove<string size, dag outs, dag ins, list<dag> pattern, MxMoveEncoding enc> 107 : MxInst<outs, ins, "move."#size#"\t$src, $dst", pattern> { 108 let Inst = enc.Value; 109} 110 111// R <- R 112class MxMove_RR<MxType TYPE, string DST_REG, string SRC_REG, 113 MxMoveEncoding ENC, 114 MxOpBundle DST = !cast<MxOpBundle>("MxOp"#TYPE.Size#"AddrMode_"#DST_REG), 115 MxOpBundle SRC = !cast<MxOpBundle>("MxOp"#TYPE.Size#"AddrMode_"#SRC_REG)> 116 : MxMove<TYPE.Prefix, 117 (outs DST.Op:$dst), (ins SRC.Op:$src), 118 [(null_frag)], ENC>; 119 120foreach DST_REG = ["r", "a"] in { 121 foreach SRC_REG = ["r", "a"] in 122 foreach TYPE = [MxType16, MxType32] in 123 def MOV # TYPE.Size # DST_REG # SRC_REG # TYPE.Postfix 124 : MxMove_RR<TYPE, DST_REG, SRC_REG, 125 MxMoveEncoding<!cast<MxMoveSize>("MxMoveSize"#TYPE.Size), 126 !cast<MxEncMemOp>("MxMoveDstOpEnc_"#DST_REG), 127 !cast<MxEncMemOp>("MxMoveSrcOpEnc_"#SRC_REG)>>; 128} // foreach DST_REG 129foreach TYPE = [MxType8, MxType16, MxType32] in 130def MOV # TYPE.Size # dd # TYPE.Postfix 131 : MxMove_RR<TYPE, "d", "d", 132 MxMoveEncoding<!cast<MxMoveSize>("MxMoveSize"#TYPE.Size), 133 MxMoveDstOpEnc_d, MxMoveSrcOpEnc_d>>; 134 135// M <- R 136let mayStore = 1 in { 137class MxMove_MR<MxType TYPE, MxOpBundle DST, string SRC_REG, MxMoveEncoding ENC, 138 MxOpBundle SRC = !cast<MxOpBundle>("MxOp"#TYPE.Size#"AddrMode_"#SRC_REG)> 139 : MxMove<TYPE.Prefix, (outs), (ins DST.Op:$dst, SRC.Op:$src), 140 [(store TYPE.VT:$src, DST.Pat:$dst)], ENC>; 141 142class MxMove_MI<MxType TYPE, MxOpBundle DST, MxMoveEncoding ENC, 143 MxImmOpBundle SRC = !cast<MxImmOpBundle>("MxOp"#TYPE.Size#"AddrMode_i")> 144 : MxMove<TYPE.Prefix, (outs), (ins DST.Op:$dst, SRC.Op:$src), 145 [(store SRC.ImmPat:$src, DST.Pat:$dst)], ENC>; 146} // let mayStore = 1 147 148foreach REG = ["r", "a", "d"] in 149foreach AM = MxMoveSupportedAMs in { 150 foreach TYPE = !if(!eq(REG, "d"), [MxType8, MxType16, MxType32], [MxType16, MxType32]) in 151 def MOV # TYPE.Size # AM # REG # TYPE.Postfix 152 : MxMove_MR<TYPE, !cast<MxOpBundle>("MxOp"#TYPE.Size#"AddrMode_"#AM), REG, 153 MxMoveEncoding<!cast<MxMoveSize>("MxMoveSize"#TYPE.Size), 154 !cast<MxEncMemOp>("MxMoveDstOpEnc_"#AM), 155 !cast<MxEncMemOp>("MxMoveSrcOpEnc_"#REG)>>; 156} // foreach AM 157 158foreach AM = MxMoveSupportedAMs in { 159 foreach TYPE = [MxType8, MxType16, MxType32] in 160 def MOV # TYPE.Size # AM # i # TYPE.Postfix 161 : MxMove_MI<TYPE, !cast<MxOpBundle>("MxOp"#TYPE.Size#"AddrMode_"#AM), 162 MxMoveEncoding<!cast<MxMoveSize>("MxMoveSize"#TYPE.Size), 163 !cast<MxEncMemOp>("MxMoveDstOpEnc_"#AM), 164 MxEncAddrMode_i<"src", TYPE.Size>>>; 165} // foreach AM 166 167// R <- I 168class MxMove_RI<MxType TYPE, string DST_REG, MxMoveEncoding ENC, 169 MxImmOpBundle SRC = !cast<MxImmOpBundle>("MxOp"#TYPE.Size#"AddrMode_i"), 170 MxOpBundle DST = !cast<MxOpBundle>("MxOp"#TYPE.Size#"AddrMode_"#DST_REG)> 171 : MxMove<TYPE.Prefix, (outs DST.Op:$dst), (ins SRC.Op:$src), 172 [(set TYPE.VT:$dst, SRC.ImmPat:$src)], ENC>; 173 174foreach REG = ["r", "a", "d"] in { 175 foreach TYPE = !if(!eq(REG, "d"), [MxType8, MxType16, MxType32], [MxType16, MxType32]) in 176 def MOV # TYPE.Size # REG # i # TYPE.Postfix 177 : MxMove_RI<TYPE, REG, 178 MxMoveEncoding<!cast<MxMoveSize>("MxMoveSize"#TYPE.Size), 179 !cast<MxEncMemOp>("MxMoveDstOpEnc_"#REG), 180 MxEncAddrMode_i<"src", TYPE.Size>>>; 181} // foreach REG 182 183// R <- M 184let mayLoad = 1 in 185class MxMove_RM<MxType TYPE, string DST_REG, MxOpBundle SRC, MxEncMemOp SRC_ENC, 186 MxMoveSize SIZE_ENC = !cast<MxMoveSize>("MxMoveSize"#TYPE.Size), 187 MxOpBundle DST = !cast<MxOpBundle>("MxOp"#TYPE.Size#"AddrMode_"#DST_REG), 188 MxEncMemOp DST_ENC = !cast<MxEncMemOp>("MxMoveDstOpEnc_"#DST_REG)> 189 : MxMove<TYPE.Prefix, (outs DST.Op:$dst), (ins SRC.Op:$src), 190 [(set TYPE.VT:$dst, (TYPE.Load SRC.Pat:$src))], 191 MxMoveEncoding<SIZE_ENC, DST_ENC, SRC_ENC>>; 192 193foreach REG = ["r", "a", "d"] in 194foreach AM = MxMoveSupportedAMs in { 195 foreach TYPE = !if(!eq(REG, "d"), [MxType8, MxType16, MxType32], [MxType16, MxType32]) in 196 def MOV # TYPE.Size # REG # AM # TYPE.Postfix 197 : MxMove_RM<TYPE, REG, !cast<MxOpBundle>("MxOp"#TYPE.Size#"AddrMode_"#AM), 198 !cast<MxEncMemOp>("MxMoveSrcOpEnc_"#AM)>; 199} // foreach AM 200 201// Tail call version 202let Pattern = [(null_frag)] in { 203 foreach REG = ["r", "a"] in 204 foreach AM = MxMoveSupportedAMs in { 205 foreach TYPE = [MxType16, MxType32] in 206 def MOV # TYPE.Size # REG # AM # _TC 207 : MxMove_RM<TYPE, REG, !cast<MxOpBundle>("MxOp"#TYPE.Size#"AddrMode_"#AM), 208 !cast<MxEncMemOp>("MxMoveSrcOpEnc_"#AM)> { 209 let isCodeGenOnly = true; 210 } 211 } // foreach AM 212} // let Pattern 213 214let mayLoad = 1, mayStore = 1 in 215class MxMove_MM<MxType TYPE, MxOpBundle DST, MxOpBundle SRC, 216 MxEncMemOp DST_ENC, MxEncMemOp SRC_ENC> 217 : MxMove<TYPE.Prefix, (outs), (ins DST.Op:$dst, SRC.Op:$src), 218 [(store (TYPE.Load SRC.Pat:$src), DST.Pat:$dst)], 219 MxMoveEncoding<!cast<MxMoveSize>("MxMoveSize"#TYPE.Size), 220 DST_ENC, SRC_ENC>>; 221 222foreach DST_AM = MxMoveSupportedAMs in 223foreach SRC_AM = MxMoveSupportedAMs in { 224 foreach TYPE = [MxType8, MxType16, MxType32] in 225 def MOV # TYPE.Size # DST_AM # SRC_AM # TYPE.Postfix 226 : MxMove_MM<TYPE, !cast<MxOpBundle>("MxOp"#TYPE.Size#"AddrMode_"#DST_AM), 227 !cast<MxOpBundle>("MxOp"#TYPE.Size#"AddrMode_"#SRC_AM), 228 !cast<MxEncMemOp>("MxMoveDstOpEnc_"#DST_AM), 229 !cast<MxEncMemOp>("MxMoveSrcOpEnc_"#SRC_AM)>; 230} // foreach SRC_AM 231 232// Store ABS(basically pointer) as Immdiate to Mem 233def : Pat<(store MxType32.BPat :$src, MxType32.PPat :$dst), 234 (MOV32pi MxType32.POp :$dst, MxType32.IOp :$src)>; 235 236def : Pat<(store MxType32.BPat :$src, MxType32.FPat :$dst), 237 (MOV32fi MxType32.FOp :$dst, MxType32.IOp :$src)>; 238 239def : Pat<(store MxType32.BPat :$src, MxType32.BPat :$dst), 240 (MOV32bi MxType32.BOp :$dst, MxType32.IOp :$src)>; 241 242def : Pat<(store MxType32.BPat :$src, MxType32.JPat :$dst), 243 (MOV32ji MxType32.JOp :$dst, MxType32.IOp :$src)>; 244 245//===----------------------------------------------------------------------===// 246// MOVEM 247// 248// The mask is already pre-processed by the save/restore spill hook 249//===----------------------------------------------------------------------===// 250 251// Direction 252defvar MxMOVEM_MR = false; 253defvar MxMOVEM_RM = true; 254 255// Size 256defvar MxMOVEM_W = false; 257defvar MxMOVEM_L = true; 258 259/// ---------------+-------------+-------------+--------- 260/// F E D C B | A | 9 8 7 | 6 | 5 4 3 | 2 1 0 261/// ---------------+---+---------+---+---------+--------- 262/// 0 1 0 0 1 | D | 0 0 1 | S | MODE | REG 263/// ---------------+---+---------+---+---------+--------- 264/// REGISTER LIST MASK 265/// ----------------------------------------------------- 266/// D - direction(RM,MR) 267/// S - size(W,L) 268class MxMOVEMEncoding<MxEncMemOp opnd_enc, bit size, bit direction, 269 string mask_op_name> { 270 dag Value = (ascend 271 (descend 0b01001, direction, 0b001, size, opnd_enc.EA), 272 // Mask 273 (operand "$"#mask_op_name, 16), 274 opnd_enc.Supplement 275 ); 276} 277 278let mayStore = 1 in 279class MxMOVEM_MR<MxType TYPE, bit SIZE_ENC, 280 MxOperand MEMOp, MxEncMemOp MEM_ENC> 281 : MxInst<(outs), (ins MEMOp:$dst, MxMoveMask:$mask), 282 "movem."#TYPE.Prefix#"\t$mask, $dst", []> { 283 let Inst = MxMOVEMEncoding<MEM_ENC, SIZE_ENC, MxMOVEM_MR, "mask">.Value; 284} 285 286foreach AM = MxMoveSupportedAMs in { 287 foreach TYPE = [MxType16, MxType32] in 288 def MOVM # TYPE.Size # AM # m # TYPE.Postfix 289 : MxMOVEM_MR<TYPE, !if(!eq(TYPE, MxType16), MxMOVEM_W, MxMOVEM_L), 290 !cast<MxOpBundle>("MxOp"#TYPE.Size#"AddrMode_"#AM).Op, 291 !cast<MxEncMemOp>("MxMoveDstOpEnc_"#AM)>; 292} // foreach AM 293 294let mayLoad = 1 in 295class MxMOVEM_RM<MxType TYPE, bit SIZE_ENC, 296 MxOperand MEMOp, MxEncMemOp MEM_ENC> 297 : MxInst<(outs), (ins MxMoveMask:$mask, MEMOp:$src), 298 "movem."#TYPE.Prefix#"\t$src, $mask", []> { 299 let Inst = MxMOVEMEncoding<MEM_ENC, SIZE_ENC, MxMOVEM_RM, "mask">.Value; 300} 301 302foreach AM = MxMoveSupportedAMs in { 303 foreach TYPE = [MxType16, MxType32] in 304 def MOVM # TYPE.Size # m # AM # TYPE.Postfix 305 : MxMOVEM_RM<TYPE, !if(!eq(TYPE, MxType16), MxMOVEM_W, MxMOVEM_L), 306 !cast<MxOpBundle>("MxOp"#TYPE.Size#"AddrMode_"#AM).Op, 307 !cast<MxEncMemOp>("MxMoveSrcOpEnc_"#AM)>; 308} // foreach AM 309 310// Pseudo versions. These a required by virtual register spill/restore since 311// the mask requires real register to encode. These instruction will be expanded 312// into real MOVEM after RA finishes. 313let mayStore = 1 in 314class MxMOVEM_MR_Pseudo<MxType TYPE, MxOperand MEMOp> 315 : MxPseudo<(outs), (ins MEMOp:$dst, TYPE.ROp:$reg)>; 316let mayLoad = 1 in 317class MxMOVEM_RM_Pseudo<MxType TYPE, MxOperand MEMOp> 318 : MxPseudo<(outs TYPE.ROp:$dst), (ins MEMOp:$src)>; 319 320// Mem <- Reg 321def MOVM8jm_P : MxMOVEM_MR_Pseudo<MxType8d, MxType8.JOp>; 322def MOVM16jm_P : MxMOVEM_MR_Pseudo<MxType16r, MxType16.JOp>; 323def MOVM32jm_P : MxMOVEM_MR_Pseudo<MxType32r, MxType32.JOp>; 324 325def MOVM8pm_P : MxMOVEM_MR_Pseudo<MxType8d, MxType8.POp>; 326def MOVM16pm_P : MxMOVEM_MR_Pseudo<MxType16r, MxType16.POp>; 327def MOVM32pm_P : MxMOVEM_MR_Pseudo<MxType32r, MxType32.POp>; 328 329// Reg <- Mem 330def MOVM8mj_P : MxMOVEM_RM_Pseudo<MxType8d, MxType8.JOp>; 331def MOVM16mj_P : MxMOVEM_RM_Pseudo<MxType16r, MxType16.JOp>; 332def MOVM32mj_P : MxMOVEM_RM_Pseudo<MxType32r, MxType32.JOp>; 333 334def MOVM8mp_P : MxMOVEM_RM_Pseudo<MxType8d, MxType8.POp>; 335def MOVM16mp_P : MxMOVEM_RM_Pseudo<MxType16r, MxType16.POp>; 336def MOVM32mp_P : MxMOVEM_RM_Pseudo<MxType32r, MxType32.POp>; 337 338 339//===----------------------------------------------------------------------===// 340// MOVE to/from SR/CCR 341// 342// A special care must be taken working with to/from CCR since it is basically 343// word-size SR register truncated for user mode thus it only supports word-size 344// instructions. Plus the original M68000 does not support moves from CCR. So in 345// order to use CCR effectively one MUST use proper byte-size pseudo instructi- 346// ons that will be resolved sometime after RA pass. 347//===----------------------------------------------------------------------===// 348 349/// -------------------------------------------------- 350/// F E D C B A 9 8 7 6 | 5 4 3 | 2 1 0 351/// -------------------------------------------------- 352/// | EFFECTIVE ADDRESS 353/// 0 1 0 0 0 1 0 0 1 1 | MODE | REG 354/// -------------------------------------------------- 355let Defs = [CCR] in 356class MxMoveToCCR<MxOperand MEMOp, MxEncMemOp SRC_ENC> 357 : MxInst<(outs CCRC:$dst), (ins MEMOp:$src), "move.w\t$src, $dst", []> { 358 let Inst = (ascend 359 (descend 0b0100010011, SRC_ENC.EA), 360 SRC_ENC.Supplement 361 ); 362} 363 364class MxMoveToCCRPseudo<MxOperand MEMOp> 365 : MxPseudo<(outs CCRC:$dst), (ins MEMOp:$src)>; 366 367let mayLoad = 1 in 368foreach AM = MxMoveSupportedAMs in { 369 def MOV16c # AM : MxMoveToCCR<!cast<MxOpBundle>("MxOp16AddrMode_"#AM).Op, 370 !cast<MxEncMemOp>("MxMoveSrcOpEnc_"#AM)>; 371 def MOV8c # AM : MxMoveToCCRPseudo<!cast<MxOpBundle>("MxOp8AddrMode_"#AM).Op>; 372} // foreach AM 373 374// Only data register is allowed. 375def MOV16cd : MxMoveToCCR<MxOp16AddrMode_d.Op, MxMoveSrcOpEnc_d>; 376def MOV8cd : MxMoveToCCRPseudo<MxOp8AddrMode_d.Op>; 377 378/// Move from CCR 379/// -------------------------------------------------- 380/// F E D C B A 9 8 7 6 | 5 4 3 | 2 1 0 381/// -------------------------------------------------- 382/// | EFFECTIVE ADDRESS 383/// 0 1 0 0 0 0 1 0 1 1 | MODE | REG 384/// -------------------------------------------------- 385let Uses = [CCR] in { 386class MxMoveFromCCR_R 387 : MxInst<(outs MxDRD16:$dst), (ins CCRC:$src), "move.w\t$src, $dst", []>, 388 Requires<[ AtLeastM68010 ]> { 389 let Inst = (descend 0b0100001011, MxEncAddrMode_d<"dst">.EA); 390} 391 392class MxMoveFromCCR_M<MxOperand MEMOp, MxEncMemOp DST_ENC> 393 : MxInst<(outs), (ins MEMOp:$dst, CCRC:$src), "move.w\t$src, $dst", []>, 394 Requires<[ AtLeastM68010 ]> { 395 let Inst = (ascend 396 (descend 0b0100001011, DST_ENC.EA), 397 DST_ENC.Supplement 398 ); 399} 400 401class MxMoveFromCCRPseudo<MxOperand MEMOp> 402 : MxPseudo<(outs), (ins MEMOp:$dst, CCRC:$src)>; 403} // let Uses = [CCR] 404 405let mayStore = 1 in 406foreach AM = MxMoveSupportedAMs in { 407 def MOV16 # AM # c 408 : MxMoveFromCCR_M<!cast<MxOpBundle>("MxOp16AddrMode_"#AM).Op, 409 !cast<MxEncMemOp>("MxMoveDstOpEnc_"#AM)>; 410 def MOV8 # AM # c 411 : MxMoveFromCCRPseudo<!cast<MxOpBundle>("MxOp8AddrMode_"#AM).Op>; 412} // foreach AM 413 414// Only data register is allowed. 415def MOV16dc : MxMoveFromCCR_R; 416def MOV8dc : MxMoveFromCCRPseudo<MxOp8AddrMode_d.Op>; 417 418//===----------------------------------------------------------------------===// 419// LEA 420//===----------------------------------------------------------------------===// 421 422/// ---------------------------------------------------- 423/// F E D C | B A 9 | 8 7 6 | 5 4 3 | 2 1 0 424/// ---------------------------------------------------- 425/// 0 1 0 0 | DST REG | 1 1 1 | MODE | REG 426/// ---------------------------------------------------- 427class MxLEA<MxOpBundle SRC, MxEncMemOp SRC_ENC> 428 : MxInst<(outs MxARD32:$dst), (ins SRC.Op:$src), 429 "lea\t$src, $dst", [(set i32:$dst, SRC.Pat:$src)]> { 430 let Inst = (ascend 431 (descend 0b0100, (operand "$dst", 3), 0b111, SRC_ENC.EA), 432 SRC_ENC.Supplement 433 ); 434} 435 436foreach AM = ["p", "f", "b", "q", "k"] in 437def LEA32 # AM : MxLEA<!cast<MxOpBundle>("MxOp32AddrMode_"#AM), 438 !cast<MxEncMemOp>("MxMoveSrcOpEnc_"#AM)>; 439 440//===----------------------------------------------------------------------===// 441// LINK/UNLK 442//===----------------------------------------------------------------------===// 443 444let Uses = [SP], Defs = [SP] in { 445let mayStore = 1 in { 446 447def LINK16 : MxInst<(outs), (ins MxARD16:$src, Mxi16imm:$disp), "link.w\t$src, $disp", []> { 448 let Inst = (ascend 449 (descend 0b0100111001010, (operand "$src", 3)), 450 (operand "$disp", 16) 451 ); 452} 453 454def LINK32 : MxInst<(outs), (ins MxARD16:$src, Mxi32imm:$disp), "link.l\t$src, $disp", []> { 455 let Inst = (ascend 456 (descend 0b0100100000001, (operand "$src", 3)), 457 (slice "$disp", 31, 16), 458 (slice "$disp", 15, 0) 459 ); 460} 461 462def UNLK : MxInst<(outs), (ins MxARD32:$src), "unlk\t$src", []> { 463 let Inst = (descend 0b0100111001011, (operand "$src", 3)); 464} 465 466} // let mayStore = 1 467} // let Uses = [SP], Defs = [SP] 468 469//===----------------------------------------------------------------------===// 470// Pseudos 471//===----------------------------------------------------------------------===// 472 473/// Pushe/Pop to/from SP for simplicity 474let Uses = [SP], Defs = [SP], hasSideEffects = 0 in { 475 476// SP <- SP - <size>; (SP) <- Dn 477let mayStore = 1 in { 478def PUSH8d : MxPseudo<(outs), (ins DR8:$reg)>; 479def PUSH16d : MxPseudo<(outs), (ins DR16:$reg)>; 480def PUSH32r : MxPseudo<(outs), (ins XR32:$reg)>; 481} // let mayStore = 1 482 483// Dn <- (SP); SP <- SP + <size> 484let mayLoad = 1 in { 485def POP8d : MxPseudo<(outs DR8:$reg), (ins)>; 486def POP16d : MxPseudo<(outs DR16:$reg), (ins)>; 487def POP32r : MxPseudo<(outs XR32:$reg), (ins)>; 488} // let mayLoad = 1 489 490} // let Uses/Defs = [SP], hasSideEffects = 0 491 492 493let Defs = [CCR] in { 494class MxPseudoMove_RR<MxType DST, MxType SRC, list<dag> PAT = []> 495 : MxPseudo<(outs DST.ROp:$dst), (ins SRC.ROp:$src), PAT>; 496 497class MxPseudoMove_RM<MxType DST, MxOperand SRCOpd, list<dag> PAT = []> 498 : MxPseudo<(outs DST.ROp:$dst), (ins SRCOpd:$src), PAT>; 499} 500 501/// This group of Pseudos is analogues to the real x86 extending moves, but 502/// since M68k does not have those we need to emulate. These instructions 503/// will be expanded right after RA completed because we need to know precisely 504/// what registers are allocated for the operands and if they overlap we just 505/// extend the value if the registers are completely different we need to move 506/// first. 507foreach EXT = ["S", "Z"] in { 508 let hasSideEffects = 0 in { 509 510 def MOV#EXT#Xd16d8 : MxPseudoMove_RR<MxType16d, MxType8d>; 511 def MOV#EXT#Xd32d8 : MxPseudoMove_RR<MxType32d, MxType8d>; 512 def MOV#EXT#Xd32d16 : MxPseudoMove_RR<MxType32r, MxType16r>; 513 514 let mayLoad = 1 in { 515 516 def MOV#EXT#Xd16j8 : MxPseudoMove_RM<MxType16d, MxType8.JOp>; 517 def MOV#EXT#Xd32j8 : MxPseudoMove_RM<MxType32d, MxType8.JOp>; 518 def MOV#EXT#Xd32j16 : MxPseudoMove_RM<MxType32d, MxType16.JOp>; 519 520 def MOV#EXT#Xd16p8 : MxPseudoMove_RM<MxType16d, MxType8.POp>; 521 def MOV#EXT#Xd32p8 : MxPseudoMove_RM<MxType32d, MxType8.POp>; 522 def MOV#EXT#Xd32p16 : MxPseudoMove_RM<MxType32d, MxType16.POp>; 523 524 def MOV#EXT#Xd16f8 : MxPseudoMove_RM<MxType16d, MxType8.FOp>; 525 def MOV#EXT#Xd32f8 : MxPseudoMove_RM<MxType32d, MxType8.FOp>; 526 def MOV#EXT#Xd32f16 : MxPseudoMove_RM<MxType32d, MxType16.FOp>; 527 528 def MOV#EXT#Xd16q8 : MxPseudoMove_RM<MxType16d, MxType8.QOp>; 529 def MOV#EXT#Xd32q8 : MxPseudoMove_RM<MxType32d, MxType8.QOp>; 530 def MOV#EXT#Xd32q16 : MxPseudoMove_RM<MxType32d, MxType16.QOp>; 531 532 } 533 } 534} 535 536/// This group of instructions is similar to the group above but DOES NOT do 537/// any value extension, they just load a smaller register into the lower part 538/// of another register if operands' real registers are different or does 539/// nothing if they are the same. 540def MOVXd16d8 : MxPseudoMove_RR<MxType16d, MxType8d>; 541def MOVXd32d8 : MxPseudoMove_RR<MxType32d, MxType8d>; 542def MOVXd32d16 : MxPseudoMove_RR<MxType32r, MxType16r>; 543 544//===----------------------------------------------------------------------===// 545// Extend/Truncate Patterns 546//===----------------------------------------------------------------------===// 547 548// i16 <- sext i8 549def: Pat<(i16 (sext i8:$src)), 550 (EXTRACT_SUBREG (MOVSXd32d8 MxDRD8:$src), MxSubRegIndex16Lo)>; 551def: Pat<(MxSExtLoadi16i8 MxCP_ARI:$src), 552 (EXTRACT_SUBREG (MOVSXd32j8 MxARI8:$src), MxSubRegIndex16Lo)>; 553def: Pat<(MxSExtLoadi16i8 MxCP_ARID:$src), 554 (EXTRACT_SUBREG (MOVSXd32p8 MxARID8:$src), MxSubRegIndex16Lo)>; 555def: Pat<(MxSExtLoadi16i8 MxCP_ARII:$src), 556 (EXTRACT_SUBREG (MOVSXd32f8 MxARII8:$src), MxSubRegIndex16Lo)>; 557 558// i32 <- sext i8 559def: Pat<(i32 (sext i8:$src)), (MOVSXd32d8 MxDRD8:$src)>; 560def: Pat<(MxSExtLoadi32i8 MxCP_ARI :$src), (MOVSXd32j8 MxARI8 :$src)>; 561def: Pat<(MxSExtLoadi32i8 MxCP_ARID:$src), (MOVSXd32p8 MxARID8:$src)>; 562def: Pat<(MxSExtLoadi32i8 MxCP_ARII:$src), (MOVSXd32f8 MxARII8:$src)>; 563 564// i32 <- sext i16 565def: Pat<(i32 (sext i16:$src)), (MOVSXd32d16 MxDRD16:$src)>; 566def: Pat<(MxSExtLoadi32i16 MxCP_ARI :$src), (MOVSXd32j16 MxARI16 :$src)>; 567def: Pat<(MxSExtLoadi32i16 MxCP_ARID:$src), (MOVSXd32p16 MxARID16:$src)>; 568def: Pat<(MxSExtLoadi32i16 MxCP_ARII:$src), (MOVSXd32f16 MxARII16:$src)>; 569 570// i16 <- zext i8 571def: Pat<(i16 (zext i8:$src)), 572 (EXTRACT_SUBREG (MOVZXd32d8 MxDRD8:$src), MxSubRegIndex16Lo)>; 573def: Pat<(MxZExtLoadi16i8 MxCP_ARI:$src), 574 (EXTRACT_SUBREG (MOVZXd32j8 MxARI8:$src), MxSubRegIndex16Lo)>; 575def: Pat<(MxZExtLoadi16i8 MxCP_ARID:$src), 576 (EXTRACT_SUBREG (MOVZXd32p8 MxARID8:$src), MxSubRegIndex16Lo)>; 577def: Pat<(MxZExtLoadi16i8 MxCP_ARII:$src), 578 (EXTRACT_SUBREG (MOVZXd32f8 MxARII8:$src), MxSubRegIndex16Lo)>; 579def: Pat<(MxZExtLoadi16i8 MxCP_PCD :$src), (MOVZXd16q8 MxPCD8 :$src)>; 580 581// i32 <- zext i8 582def: Pat<(i32 (zext i8:$src)), (MOVZXd32d8 MxDRD8:$src)>; 583def: Pat<(MxZExtLoadi32i8 MxCP_ARI :$src), (MOVZXd32j8 MxARI8 :$src)>; 584def: Pat<(MxZExtLoadi32i8 MxCP_ARID:$src), (MOVZXd32p8 MxARID8:$src)>; 585def: Pat<(MxZExtLoadi32i8 MxCP_ARII:$src), (MOVZXd32f8 MxARII8:$src)>; 586def: Pat<(MxZExtLoadi32i8 MxCP_PCD :$src), (MOVZXd32q8 MxPCD8 :$src)>; 587 588// i32 <- zext i16 589def: Pat<(i32 (zext i16:$src)), (MOVZXd32d16 MxDRD16:$src)>; 590def: Pat<(MxZExtLoadi32i16 MxCP_ARI :$src), (MOVZXd32j16 MxARI16 :$src)>; 591def: Pat<(MxZExtLoadi32i16 MxCP_ARID:$src), (MOVZXd32p16 MxARID16:$src)>; 592def: Pat<(MxZExtLoadi32i16 MxCP_ARII:$src), (MOVZXd32f16 MxARII16:$src)>; 593def: Pat<(MxZExtLoadi32i16 MxCP_PCD :$src), (MOVZXd32q16 MxPCD16 :$src)>; 594 595// i16 <- anyext i8 596def: Pat<(i16 (anyext i8:$src)), 597 (EXTRACT_SUBREG (MOVZXd32d8 MxDRD8:$src), MxSubRegIndex16Lo)>; 598def: Pat<(MxExtLoadi16i8 MxCP_ARI:$src), 599 (EXTRACT_SUBREG (MOVZXd32j8 MxARI8:$src), MxSubRegIndex16Lo)>; 600def: Pat<(MxExtLoadi16i8 MxCP_ARID:$src), 601 (EXTRACT_SUBREG (MOVZXd32p8 MxARID8:$src), MxSubRegIndex16Lo)>; 602def: Pat<(MxExtLoadi16i8 MxCP_ARII:$src), 603 (EXTRACT_SUBREG (MOVZXd32f8 MxARII8:$src), MxSubRegIndex16Lo)>; 604 605// i32 <- anyext i8 606def: Pat<(i32 (anyext i8:$src)), (MOVZXd32d8 MxDRD8:$src)>; 607def: Pat<(MxExtLoadi32i8 MxCP_ARI :$src), (MOVZXd32j8 MxARI8 :$src)>; 608def: Pat<(MxExtLoadi32i8 MxCP_ARID:$src), (MOVZXd32p8 MxARID8:$src)>; 609def: Pat<(MxExtLoadi32i8 MxCP_ARII:$src), (MOVZXd32f8 MxARII8:$src)>; 610 611// i32 <- anyext i16 612def: Pat<(i32 (anyext i16:$src)), (MOVZXd32d16 MxDRD16:$src)>; 613def: Pat<(MxExtLoadi32i16 MxCP_ARI :$src), (MOVZXd32j16 MxARI16 :$src)>; 614def: Pat<(MxExtLoadi32i16 MxCP_ARID:$src), (MOVZXd32p16 MxARID16:$src)>; 615def: Pat<(MxExtLoadi32i16 MxCP_ARII:$src), (MOVZXd32f16 MxARII16:$src)>; 616 617// trunc patterns 618def : Pat<(i16 (trunc i32:$src)), 619 (EXTRACT_SUBREG MxXRD32:$src, MxSubRegIndex16Lo)>; 620def : Pat<(i8 (trunc i32:$src)), 621 (EXTRACT_SUBREG MxXRD32:$src, MxSubRegIndex8Lo)>; 622def : Pat<(i8 (trunc i16:$src)), 623 (EXTRACT_SUBREG MxXRD16:$src, MxSubRegIndex8Lo)>; 624 625//===----------------------------------------------------------------------===// 626// FMOVE 627//===----------------------------------------------------------------------===// 628 629let Defs = [FPS] in 630class MxFMove<string size, dag outs, dag ins, list<dag> pattern, 631 string rounding = ""> 632 : MxInst<outs, ins, 633 "f"#rounding#"move."#size#"\t$src, $dst", pattern> { 634 // Only FMOVE uses FPC 635 let Uses = !if(!eq(rounding, ""), [FPC], []); 636 637 // FSMOVE and FDMOVE are only available after M68040 638 let Predicates = [!if(!eq(rounding, ""), AtLeastM68881, AtLeastM68040)]; 639} 640 641// FPDR <- FPDR 642class MxFMove_FF<string rounding, int size, 643 MxOpBundle Opnd = !cast<MxOpBundle>("MxOp"#size#"AddrMode_fpr")> 644 : MxFMove<"x", (outs Opnd.Op:$dst), (ins Opnd.Op:$src), 645 [(null_frag)], rounding> { 646 let Inst = (ascend 647 (descend 0b1111, 648 /*COPROCESSOR ID*/0b001, 649 0b000, 650 /*MODE + REGISTER*/0b000000 651 ), 652 (descend 0b0, /* R/M */0b0, 0b0, 653 /*SOURCE SPECIFIER*/ 654 (operand "$src", 3), 655 /*DESTINATION*/ 656 (operand "$dst", 3), 657 /*OPMODE*/ 658 !cond(!eq(rounding, "s"): 0b1000000, 659 !eq(rounding, "d"): 0b1000100, 660 true: 0b0000000) 661 ) 662 ); 663} 664 665foreach rounding = ["", "s", "d"] in { 666 def F # !toupper(rounding) # MOV80fp_fp : MxFMove_FF<rounding, 80>; 667 668 // We don't have `fmove.s` or `fmove.d` because values will be converted to 669 // f80 upon storing into the register, but FMOV32/64fp_fp are still needed 670 // to make codegen easier. 671 let isCodeGenOnly = true in 672 foreach size = [32, 64] in 673 def F # !toupper(rounding) # MOV # size # fp_fp : MxFMove_FF<rounding, size>; 674} 675