1 //===-- PPCISelLowering.h - PPC32 DAG Lowering Interface --------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file defines the interfaces that PPC uses to lower LLVM code into a 11 // selection DAG. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_TARGET_POWERPC_PPC32ISELLOWERING_H 16 #define LLVM_TARGET_POWERPC_PPC32ISELLOWERING_H 17 18 #include "PPC.h" 19 #include "PPCInstrInfo.h" 20 #include "PPCRegisterInfo.h" 21 #include "PPCSubtarget.h" 22 #include "llvm/CodeGen/SelectionDAG.h" 23 #include "llvm/CodeGen/CallingConvLower.h" 24 #include "llvm/Target/TargetLowering.h" 25 26 namespace llvm { 27 namespace PPCISD { 28 enum NodeType { 29 // Start the numbering where the builtin ops and target ops leave off. 30 FIRST_NUMBER = ISD::BUILTIN_OP_END, 31 32 /// FSEL - Traditional three-operand fsel node. 33 /// 34 FSEL, 35 36 /// FCFID - The FCFID instruction, taking an f64 operand and producing 37 /// and f64 value containing the FP representation of the integer that 38 /// was temporarily in the f64 operand. 39 FCFID, 40 41 /// Newer FCFID[US] integer-to-floating-point conversion instructions for 42 /// unsigned integers and single-precision outputs. 43 FCFIDU, FCFIDS, FCFIDUS, 44 45 /// FCTI[D,W]Z - The FCTIDZ and FCTIWZ instructions, taking an f32 or f64 46 /// operand, producing an f64 value containing the integer representation 47 /// of that FP value. 48 FCTIDZ, FCTIWZ, 49 50 /// Newer FCTI[D,W]UZ floating-point-to-integer conversion instructions for 51 /// unsigned integers. 52 FCTIDUZ, FCTIWUZ, 53 54 /// Reciprocal estimate instructions (unary FP ops). 55 FRE, FRSQRTE, 56 57 // VMADDFP, VNMSUBFP - The VMADDFP and VNMSUBFP instructions, taking 58 // three v4f32 operands and producing a v4f32 result. 59 VMADDFP, VNMSUBFP, 60 61 /// VPERM - The PPC VPERM Instruction. 62 /// 63 VPERM, 64 65 /// Hi/Lo - These represent the high and low 16-bit parts of a global 66 /// address respectively. These nodes have two operands, the first of 67 /// which must be a TargetGlobalAddress, and the second of which must be a 68 /// Constant. Selected naively, these turn into 'lis G+C' and 'li G+C', 69 /// though these are usually folded into other nodes. 70 Hi, Lo, 71 72 TOC_ENTRY, 73 74 /// The following three target-specific nodes are used for calls through 75 /// function pointers in the 64-bit SVR4 ABI. 76 77 /// Restore the TOC from the TOC save area of the current stack frame. 78 /// This is basically a hard coded load instruction which additionally 79 /// takes/produces a flag. 80 TOC_RESTORE, 81 82 /// Like a regular LOAD but additionally taking/producing a flag. 83 LOAD, 84 85 /// LOAD into r2 (also taking/producing a flag). Like TOC_RESTORE, this is 86 /// a hard coded load instruction. 87 LOAD_TOC, 88 89 /// OPRC, CHAIN = DYNALLOC(CHAIN, NEGSIZE, FRAME_INDEX) 90 /// This instruction is lowered in PPCRegisterInfo::eliminateFrameIndex to 91 /// compute an allocation on the stack. 92 DYNALLOC, 93 94 /// GlobalBaseReg - On Darwin, this node represents the result of the mflr 95 /// at function entry, used for PIC code. 96 GlobalBaseReg, 97 98 /// These nodes represent the 32-bit PPC shifts that operate on 6-bit 99 /// shift amounts. These nodes are generated by the multi-precision shift 100 /// code. 101 SRL, SRA, SHL, 102 103 /// CALL - A direct function call. 104 /// CALL_NOP is a call with the special NOP which follows 64-bit 105 /// SVR4 calls. 106 CALL, CALL_NOP, 107 108 /// CHAIN,FLAG = MTCTR(VAL, CHAIN[, INFLAG]) - Directly corresponds to a 109 /// MTCTR instruction. 110 MTCTR, 111 112 /// CHAIN,FLAG = BCTRL(CHAIN, INFLAG) - Directly corresponds to a 113 /// BCTRL instruction. 114 BCTRL, 115 116 /// Return with a flag operand, matched by 'blr' 117 RET_FLAG, 118 119 /// R32 = MFOCRF(CRREG, INFLAG) - Represents the MFOCRF instruction. 120 /// This copies the bits corresponding to the specified CRREG into the 121 /// resultant GPR. Bits corresponding to other CR regs are undefined. 122 MFOCRF, 123 124 // EH_SJLJ_SETJMP - SjLj exception handling setjmp. 125 EH_SJLJ_SETJMP, 126 127 // EH_SJLJ_LONGJMP - SjLj exception handling longjmp. 128 EH_SJLJ_LONGJMP, 129 130 /// RESVEC = VCMP(LHS, RHS, OPC) - Represents one of the altivec VCMP* 131 /// instructions. For lack of better number, we use the opcode number 132 /// encoding for the OPC field to identify the compare. For example, 838 133 /// is VCMPGTSH. 134 VCMP, 135 136 /// RESVEC, OUTFLAG = VCMPo(LHS, RHS, OPC) - Represents one of the 137 /// altivec VCMP*o instructions. For lack of better number, we use the 138 /// opcode number encoding for the OPC field to identify the compare. For 139 /// example, 838 is VCMPGTSH. 140 VCMPo, 141 142 /// CHAIN = COND_BRANCH CHAIN, CRRC, OPC, DESTBB [, INFLAG] - This 143 /// corresponds to the COND_BRANCH pseudo instruction. CRRC is the 144 /// condition register to branch on, OPC is the branch opcode to use (e.g. 145 /// PPC::BLE), DESTBB is the destination block to branch to, and INFLAG is 146 /// an optional input flag argument. 147 COND_BRANCH, 148 149 /// CHAIN = BDNZ CHAIN, DESTBB - These are used to create counter-based 150 /// loops. 151 BDNZ, BDZ, 152 153 /// F8RC = FADDRTZ F8RC, F8RC - This is an FADD done with rounding 154 /// towards zero. Used only as part of the long double-to-int 155 /// conversion sequence. 156 FADDRTZ, 157 158 /// F8RC = MFFS - This moves the FPSCR (not modeled) into the register. 159 MFFS, 160 161 /// LARX = This corresponds to PPC l{w|d}arx instrcution: load and 162 /// reserve indexed. This is used to implement atomic operations. 163 LARX, 164 165 /// STCX = This corresponds to PPC stcx. instrcution: store conditional 166 /// indexed. This is used to implement atomic operations. 167 STCX, 168 169 /// TC_RETURN - A tail call return. 170 /// operand #0 chain 171 /// operand #1 callee (register or absolute) 172 /// operand #2 stack adjustment 173 /// operand #3 optional in flag 174 TC_RETURN, 175 176 /// ch, gl = CR6[UN]SET ch, inglue - Toggle CR bit 6 for SVR4 vararg calls 177 CR6SET, 178 CR6UNSET, 179 180 /// G8RC = ADDIS_GOT_TPREL_HA %X2, Symbol - Used by the initial-exec 181 /// TLS model, produces an ADDIS8 instruction that adds the GOT 182 /// base to sym\@got\@tprel\@ha. 183 ADDIS_GOT_TPREL_HA, 184 185 /// G8RC = LD_GOT_TPREL_L Symbol, G8RReg - Used by the initial-exec 186 /// TLS model, produces a LD instruction with base register G8RReg 187 /// and offset sym\@got\@tprel\@l. This completes the addition that 188 /// finds the offset of "sym" relative to the thread pointer. 189 LD_GOT_TPREL_L, 190 191 /// G8RC = ADD_TLS G8RReg, Symbol - Used by the initial-exec TLS 192 /// model, produces an ADD instruction that adds the contents of 193 /// G8RReg to the thread pointer. Symbol contains a relocation 194 /// sym\@tls which is to be replaced by the thread pointer and 195 /// identifies to the linker that the instruction is part of a 196 /// TLS sequence. 197 ADD_TLS, 198 199 /// G8RC = ADDIS_TLSGD_HA %X2, Symbol - For the general-dynamic TLS 200 /// model, produces an ADDIS8 instruction that adds the GOT base 201 /// register to sym\@got\@tlsgd\@ha. 202 ADDIS_TLSGD_HA, 203 204 /// G8RC = ADDI_TLSGD_L G8RReg, Symbol - For the general-dynamic TLS 205 /// model, produces an ADDI8 instruction that adds G8RReg to 206 /// sym\@got\@tlsgd\@l. 207 ADDI_TLSGD_L, 208 209 /// G8RC = GET_TLS_ADDR %X3, Symbol - For the general-dynamic TLS 210 /// model, produces a call to __tls_get_addr(sym\@tlsgd). 211 GET_TLS_ADDR, 212 213 /// G8RC = ADDIS_TLSLD_HA %X2, Symbol - For the local-dynamic TLS 214 /// model, produces an ADDIS8 instruction that adds the GOT base 215 /// register to sym\@got\@tlsld\@ha. 216 ADDIS_TLSLD_HA, 217 218 /// G8RC = ADDI_TLSLD_L G8RReg, Symbol - For the local-dynamic TLS 219 /// model, produces an ADDI8 instruction that adds G8RReg to 220 /// sym\@got\@tlsld\@l. 221 ADDI_TLSLD_L, 222 223 /// G8RC = GET_TLSLD_ADDR %X3, Symbol - For the local-dynamic TLS 224 /// model, produces a call to __tls_get_addr(sym\@tlsld). 225 GET_TLSLD_ADDR, 226 227 /// G8RC = ADDIS_DTPREL_HA %X3, Symbol, Chain - For the 228 /// local-dynamic TLS model, produces an ADDIS8 instruction 229 /// that adds X3 to sym\@dtprel\@ha. The Chain operand is needed 230 /// to tie this in place following a copy to %X3 from the result 231 /// of a GET_TLSLD_ADDR. 232 ADDIS_DTPREL_HA, 233 234 /// G8RC = ADDI_DTPREL_L G8RReg, Symbol - For the local-dynamic TLS 235 /// model, produces an ADDI8 instruction that adds G8RReg to 236 /// sym\@got\@dtprel\@l. 237 ADDI_DTPREL_L, 238 239 /// VRRC = VADD_SPLAT Elt, EltSize - Temporary node to be expanded 240 /// during instruction selection to optimize a BUILD_VECTOR into 241 /// operations on splats. This is necessary to avoid losing these 242 /// optimizations due to constant folding. 243 VADD_SPLAT, 244 245 /// CHAIN = SC CHAIN, Imm128 - System call. The 7-bit unsigned 246 /// operand identifies the operating system entry point. 247 SC, 248 249 /// CHAIN = STBRX CHAIN, GPRC, Ptr, Type - This is a 250 /// byte-swapping store instruction. It byte-swaps the low "Type" bits of 251 /// the GPRC input, then stores it through Ptr. Type can be either i16 or 252 /// i32. 253 STBRX = ISD::FIRST_TARGET_MEMORY_OPCODE, 254 255 /// GPRC, CHAIN = LBRX CHAIN, Ptr, Type - This is a 256 /// byte-swapping load instruction. It loads "Type" bits, byte swaps it, 257 /// then puts it in the bottom bits of the GPRC. TYPE can be either i16 258 /// or i32. 259 LBRX, 260 261 /// STFIWX - The STFIWX instruction. The first operand is an input token 262 /// chain, then an f64 value to store, then an address to store it to. 263 STFIWX, 264 265 /// GPRC, CHAIN = LFIWAX CHAIN, Ptr - This is a floating-point 266 /// load which sign-extends from a 32-bit integer value into the 267 /// destination 64-bit register. 268 LFIWAX, 269 270 /// GPRC, CHAIN = LFIWZX CHAIN, Ptr - This is a floating-point 271 /// load which zero-extends from a 32-bit integer value into the 272 /// destination 64-bit register. 273 LFIWZX, 274 275 /// G8RC = ADDIS_TOC_HA %X2, Symbol - For medium and large code model, 276 /// produces an ADDIS8 instruction that adds the TOC base register to 277 /// sym\@toc\@ha. 278 ADDIS_TOC_HA, 279 280 /// G8RC = LD_TOC_L Symbol, G8RReg - For medium and large code model, 281 /// produces a LD instruction with base register G8RReg and offset 282 /// sym\@toc\@l. Preceded by an ADDIS_TOC_HA to form a full 32-bit offset. 283 LD_TOC_L, 284 285 /// G8RC = ADDI_TOC_L G8RReg, Symbol - For medium code model, produces 286 /// an ADDI8 instruction that adds G8RReg to sym\@toc\@l. 287 /// Preceded by an ADDIS_TOC_HA to form a full 32-bit offset. 288 ADDI_TOC_L 289 }; 290 } 291 292 /// Define some predicates that are used for node matching. 293 namespace PPC { 294 /// isVPKUHUMShuffleMask - Return true if this is the shuffle mask for a 295 /// VPKUHUM instruction. 296 bool isVPKUHUMShuffleMask(ShuffleVectorSDNode *N, bool isUnary); 297 298 /// isVPKUWUMShuffleMask - Return true if this is the shuffle mask for a 299 /// VPKUWUM instruction. 300 bool isVPKUWUMShuffleMask(ShuffleVectorSDNode *N, bool isUnary); 301 302 /// isVMRGLShuffleMask - Return true if this is a shuffle mask suitable for 303 /// a VRGL* instruction with the specified unit size (1,2 or 4 bytes). 304 bool isVMRGLShuffleMask(ShuffleVectorSDNode *N, unsigned UnitSize, 305 bool isUnary); 306 307 /// isVMRGHShuffleMask - Return true if this is a shuffle mask suitable for 308 /// a VRGH* instruction with the specified unit size (1,2 or 4 bytes). 309 bool isVMRGHShuffleMask(ShuffleVectorSDNode *N, unsigned UnitSize, 310 bool isUnary); 311 312 /// isVSLDOIShuffleMask - If this is a vsldoi shuffle mask, return the shift 313 /// amount, otherwise return -1. 314 int isVSLDOIShuffleMask(SDNode *N, bool isUnary); 315 316 /// isSplatShuffleMask - Return true if the specified VECTOR_SHUFFLE operand 317 /// specifies a splat of a single element that is suitable for input to 318 /// VSPLTB/VSPLTH/VSPLTW. 319 bool isSplatShuffleMask(ShuffleVectorSDNode *N, unsigned EltSize); 320 321 /// isAllNegativeZeroVector - Returns true if all elements of build_vector 322 /// are -0.0. 323 bool isAllNegativeZeroVector(SDNode *N); 324 325 /// getVSPLTImmediate - Return the appropriate VSPLT* immediate to splat the 326 /// specified isSplatShuffleMask VECTOR_SHUFFLE mask. 327 unsigned getVSPLTImmediate(SDNode *N, unsigned EltSize); 328 329 /// get_VSPLTI_elt - If this is a build_vector of constants which can be 330 /// formed by using a vspltis[bhw] instruction of the specified element 331 /// size, return the constant being splatted. The ByteSize field indicates 332 /// the number of bytes of each element [124] -> [bhw]. 333 SDValue get_VSPLTI_elt(SDNode *N, unsigned ByteSize, SelectionDAG &DAG); 334 } 335 336 class PPCTargetLowering : public TargetLowering { 337 const PPCSubtarget &PPCSubTarget; 338 339 public: 340 explicit PPCTargetLowering(PPCTargetMachine &TM); 341 342 /// getTargetNodeName() - This method returns the name of a target specific 343 /// DAG node. 344 virtual const char *getTargetNodeName(unsigned Opcode) const; 345 346 virtual MVT getScalarShiftAmountTy(EVT LHSTy) const { return MVT::i32; } 347 348 /// getSetCCResultType - Return the ISD::SETCC ValueType 349 virtual EVT getSetCCResultType(LLVMContext &Context, EVT VT) const; 350 351 /// getPreIndexedAddressParts - returns true by value, base pointer and 352 /// offset pointer and addressing mode by reference if the node's address 353 /// can be legally represented as pre-indexed load / store address. 354 virtual bool getPreIndexedAddressParts(SDNode *N, SDValue &Base, 355 SDValue &Offset, 356 ISD::MemIndexedMode &AM, 357 SelectionDAG &DAG) const; 358 359 /// SelectAddressRegReg - Given the specified addressed, check to see if it 360 /// can be represented as an indexed [r+r] operation. Returns false if it 361 /// can be more efficiently represented with [r+imm]. 362 bool SelectAddressRegReg(SDValue N, SDValue &Base, SDValue &Index, 363 SelectionDAG &DAG) const; 364 365 /// SelectAddressRegImm - Returns true if the address N can be represented 366 /// by a base register plus a signed 16-bit displacement [r+imm], and if it 367 /// is not better represented as reg+reg. If Aligned is true, only accept 368 /// displacements suitable for STD and friends, i.e. multiples of 4. 369 bool SelectAddressRegImm(SDValue N, SDValue &Disp, SDValue &Base, 370 SelectionDAG &DAG, bool Aligned) const; 371 372 /// SelectAddressRegRegOnly - Given the specified addressed, force it to be 373 /// represented as an indexed [r+r] operation. 374 bool SelectAddressRegRegOnly(SDValue N, SDValue &Base, SDValue &Index, 375 SelectionDAG &DAG) const; 376 377 Sched::Preference getSchedulingPreference(SDNode *N) const; 378 379 /// LowerOperation - Provide custom lowering hooks for some operations. 380 /// 381 virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const; 382 383 /// ReplaceNodeResults - Replace the results of node with an illegal result 384 /// type with new values built out of custom code. 385 /// 386 virtual void ReplaceNodeResults(SDNode *N, SmallVectorImpl<SDValue>&Results, 387 SelectionDAG &DAG) const; 388 389 virtual SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const; 390 391 virtual void computeMaskedBitsForTargetNode(const SDValue Op, 392 APInt &KnownZero, 393 APInt &KnownOne, 394 const SelectionDAG &DAG, 395 unsigned Depth = 0) const; 396 397 virtual MachineBasicBlock * 398 EmitInstrWithCustomInserter(MachineInstr *MI, 399 MachineBasicBlock *MBB) const; 400 MachineBasicBlock *EmitAtomicBinary(MachineInstr *MI, 401 MachineBasicBlock *MBB, bool is64Bit, 402 unsigned BinOpcode) const; 403 MachineBasicBlock *EmitPartwordAtomicBinary(MachineInstr *MI, 404 MachineBasicBlock *MBB, 405 bool is8bit, unsigned Opcode) const; 406 407 MachineBasicBlock *emitEHSjLjSetJmp(MachineInstr *MI, 408 MachineBasicBlock *MBB) const; 409 410 MachineBasicBlock *emitEHSjLjLongJmp(MachineInstr *MI, 411 MachineBasicBlock *MBB) const; 412 413 ConstraintType getConstraintType(const std::string &Constraint) const; 414 415 /// Examine constraint string and operand type and determine a weight value. 416 /// The operand object must already have been set up with the operand type. 417 ConstraintWeight getSingleConstraintMatchWeight( 418 AsmOperandInfo &info, const char *constraint) const; 419 420 std::pair<unsigned, const TargetRegisterClass*> 421 getRegForInlineAsmConstraint(const std::string &Constraint, 422 MVT VT) const; 423 424 /// getByValTypeAlignment - Return the desired alignment for ByVal aggregate 425 /// function arguments in the caller parameter area. This is the actual 426 /// alignment, not its logarithm. 427 unsigned getByValTypeAlignment(Type *Ty) const; 428 429 /// LowerAsmOperandForConstraint - Lower the specified operand into the Ops 430 /// vector. If it is invalid, don't add anything to Ops. 431 virtual void LowerAsmOperandForConstraint(SDValue Op, 432 std::string &Constraint, 433 std::vector<SDValue> &Ops, 434 SelectionDAG &DAG) const; 435 436 /// isLegalAddressingMode - Return true if the addressing mode represented 437 /// by AM is legal for this target, for a load/store of the specified type. 438 virtual bool isLegalAddressingMode(const AddrMode &AM, Type *Ty)const; 439 440 virtual bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const; 441 442 /// getOptimalMemOpType - Returns the target specific optimal type for load 443 /// and store operations as a result of memset, memcpy, and memmove 444 /// lowering. If DstAlign is zero that means it's safe to destination 445 /// alignment can satisfy any constraint. Similarly if SrcAlign is zero it 446 /// means there isn't a need to check it against alignment requirement, 447 /// probably because the source does not need to be loaded. If 'IsMemset' is 448 /// true, that means it's expanding a memset. If 'ZeroMemset' is true, that 449 /// means it's a memset of zero. 'MemcpyStrSrc' indicates whether the memcpy 450 /// source is constant so it does not need to be loaded. 451 /// It returns EVT::Other if the type should be determined using generic 452 /// target-independent logic. 453 virtual EVT 454 getOptimalMemOpType(uint64_t Size, unsigned DstAlign, unsigned SrcAlign, 455 bool IsMemset, bool ZeroMemset, bool MemcpyStrSrc, 456 MachineFunction &MF) const; 457 458 /// Is unaligned memory access allowed for the given type, and is it fast 459 /// relative to software emulation. 460 virtual bool allowsUnalignedMemoryAccesses(EVT VT, bool *Fast = 0) const; 461 462 /// isFMAFasterThanFMulAndFAdd - Return true if an FMA operation is faster 463 /// than a pair of fmul and fadd instructions. fmuladd intrinsics will be 464 /// expanded to FMAs when this method returns true, otherwise fmuladd is 465 /// expanded to fmul + fadd. 466 virtual bool isFMAFasterThanFMulAndFAdd(EVT VT) const; 467 468 /// createFastISel - This method returns a target-specific FastISel object, 469 /// or null if the target does not support "fast" instruction selection. 470 virtual FastISel *createFastISel(FunctionLoweringInfo &FuncInfo, 471 const TargetLibraryInfo *LibInfo) const; 472 473 private: 474 SDValue getFramePointerFrameIndex(SelectionDAG & DAG) const; 475 SDValue getReturnAddrFrameIndex(SelectionDAG & DAG) const; 476 477 bool 478 IsEligibleForTailCallOptimization(SDValue Callee, 479 CallingConv::ID CalleeCC, 480 bool isVarArg, 481 const SmallVectorImpl<ISD::InputArg> &Ins, 482 SelectionDAG& DAG) const; 483 484 SDValue EmitTailCallLoadFPAndRetAddr(SelectionDAG & DAG, 485 int SPDiff, 486 SDValue Chain, 487 SDValue &LROpOut, 488 SDValue &FPOpOut, 489 bool isDarwinABI, 490 SDLoc dl) const; 491 492 SDValue LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const; 493 SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const; 494 SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG) const; 495 SDValue LowerBlockAddress(SDValue Op, SelectionDAG &DAG) const; 496 SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const; 497 SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const; 498 SDValue LowerJumpTable(SDValue Op, SelectionDAG &DAG) const; 499 SDValue LowerSETCC(SDValue Op, SelectionDAG &DAG) const; 500 SDValue LowerINIT_TRAMPOLINE(SDValue Op, SelectionDAG &DAG) const; 501 SDValue LowerADJUST_TRAMPOLINE(SDValue Op, SelectionDAG &DAG) const; 502 SDValue LowerVASTART(SDValue Op, SelectionDAG &DAG, 503 const PPCSubtarget &Subtarget) const; 504 SDValue LowerVAARG(SDValue Op, SelectionDAG &DAG, 505 const PPCSubtarget &Subtarget) const; 506 SDValue LowerVACOPY(SDValue Op, SelectionDAG &DAG, 507 const PPCSubtarget &Subtarget) const; 508 SDValue LowerSTACKRESTORE(SDValue Op, SelectionDAG &DAG, 509 const PPCSubtarget &Subtarget) const; 510 SDValue LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG, 511 const PPCSubtarget &Subtarget) const; 512 SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const; 513 SDValue LowerFP_TO_INT(SDValue Op, SelectionDAG &DAG, SDLoc dl) const; 514 SDValue LowerINT_TO_FP(SDValue Op, SelectionDAG &DAG) const; 515 SDValue LowerFLT_ROUNDS_(SDValue Op, SelectionDAG &DAG) const; 516 SDValue LowerSHL_PARTS(SDValue Op, SelectionDAG &DAG) const; 517 SDValue LowerSRL_PARTS(SDValue Op, SelectionDAG &DAG) const; 518 SDValue LowerSRA_PARTS(SDValue Op, SelectionDAG &DAG) const; 519 SDValue LowerBUILD_VECTOR(SDValue Op, SelectionDAG &DAG) const; 520 SDValue LowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) const; 521 SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG) const; 522 SDValue LowerSCALAR_TO_VECTOR(SDValue Op, SelectionDAG &DAG) const; 523 SDValue LowerMUL(SDValue Op, SelectionDAG &DAG) const; 524 525 SDValue LowerCallResult(SDValue Chain, SDValue InFlag, 526 CallingConv::ID CallConv, bool isVarArg, 527 const SmallVectorImpl<ISD::InputArg> &Ins, 528 SDLoc dl, SelectionDAG &DAG, 529 SmallVectorImpl<SDValue> &InVals) const; 530 SDValue FinishCall(CallingConv::ID CallConv, SDLoc dl, bool isTailCall, 531 bool isVarArg, 532 SelectionDAG &DAG, 533 SmallVector<std::pair<unsigned, SDValue>, 8> 534 &RegsToPass, 535 SDValue InFlag, SDValue Chain, 536 SDValue &Callee, 537 int SPDiff, unsigned NumBytes, 538 const SmallVectorImpl<ISD::InputArg> &Ins, 539 SmallVectorImpl<SDValue> &InVals) const; 540 541 virtual SDValue 542 LowerFormalArguments(SDValue Chain, 543 CallingConv::ID CallConv, bool isVarArg, 544 const SmallVectorImpl<ISD::InputArg> &Ins, 545 SDLoc dl, SelectionDAG &DAG, 546 SmallVectorImpl<SDValue> &InVals) const; 547 548 virtual SDValue 549 LowerCall(TargetLowering::CallLoweringInfo &CLI, 550 SmallVectorImpl<SDValue> &InVals) const; 551 552 virtual bool 553 CanLowerReturn(CallingConv::ID CallConv, MachineFunction &MF, 554 bool isVarArg, 555 const SmallVectorImpl<ISD::OutputArg> &Outs, 556 LLVMContext &Context) const; 557 558 virtual SDValue 559 LowerReturn(SDValue Chain, 560 CallingConv::ID CallConv, bool isVarArg, 561 const SmallVectorImpl<ISD::OutputArg> &Outs, 562 const SmallVectorImpl<SDValue> &OutVals, 563 SDLoc dl, SelectionDAG &DAG) const; 564 565 SDValue 566 extendArgForPPC64(ISD::ArgFlagsTy Flags, EVT ObjectVT, SelectionDAG &DAG, 567 SDValue ArgVal, SDLoc dl) const; 568 569 void 570 setMinReservedArea(MachineFunction &MF, SelectionDAG &DAG, 571 unsigned nAltivecParamsAtEnd, 572 unsigned MinReservedArea, bool isPPC64) const; 573 574 SDValue 575 LowerFormalArguments_Darwin(SDValue Chain, 576 CallingConv::ID CallConv, bool isVarArg, 577 const SmallVectorImpl<ISD::InputArg> &Ins, 578 SDLoc dl, SelectionDAG &DAG, 579 SmallVectorImpl<SDValue> &InVals) const; 580 SDValue 581 LowerFormalArguments_64SVR4(SDValue Chain, 582 CallingConv::ID CallConv, bool isVarArg, 583 const SmallVectorImpl<ISD::InputArg> &Ins, 584 SDLoc dl, SelectionDAG &DAG, 585 SmallVectorImpl<SDValue> &InVals) const; 586 SDValue 587 LowerFormalArguments_32SVR4(SDValue Chain, 588 CallingConv::ID CallConv, bool isVarArg, 589 const SmallVectorImpl<ISD::InputArg> &Ins, 590 SDLoc dl, SelectionDAG &DAG, 591 SmallVectorImpl<SDValue> &InVals) const; 592 593 SDValue 594 createMemcpyOutsideCallSeq(SDValue Arg, SDValue PtrOff, 595 SDValue CallSeqStart, ISD::ArgFlagsTy Flags, 596 SelectionDAG &DAG, SDLoc dl) const; 597 598 SDValue 599 LowerCall_Darwin(SDValue Chain, SDValue Callee, 600 CallingConv::ID CallConv, 601 bool isVarArg, bool isTailCall, 602 const SmallVectorImpl<ISD::OutputArg> &Outs, 603 const SmallVectorImpl<SDValue> &OutVals, 604 const SmallVectorImpl<ISD::InputArg> &Ins, 605 SDLoc dl, SelectionDAG &DAG, 606 SmallVectorImpl<SDValue> &InVals) const; 607 SDValue 608 LowerCall_64SVR4(SDValue Chain, SDValue Callee, 609 CallingConv::ID CallConv, 610 bool isVarArg, bool isTailCall, 611 const SmallVectorImpl<ISD::OutputArg> &Outs, 612 const SmallVectorImpl<SDValue> &OutVals, 613 const SmallVectorImpl<ISD::InputArg> &Ins, 614 SDLoc dl, SelectionDAG &DAG, 615 SmallVectorImpl<SDValue> &InVals) const; 616 SDValue 617 LowerCall_32SVR4(SDValue Chain, SDValue Callee, CallingConv::ID CallConv, 618 bool isVarArg, bool isTailCall, 619 const SmallVectorImpl<ISD::OutputArg> &Outs, 620 const SmallVectorImpl<SDValue> &OutVals, 621 const SmallVectorImpl<ISD::InputArg> &Ins, 622 SDLoc dl, SelectionDAG &DAG, 623 SmallVectorImpl<SDValue> &InVals) const; 624 625 SDValue lowerEH_SJLJ_SETJMP(SDValue Op, SelectionDAG &DAG) const; 626 SDValue lowerEH_SJLJ_LONGJMP(SDValue Op, SelectionDAG &DAG) const; 627 628 SDValue DAGCombineFastRecip(SDValue Op, DAGCombinerInfo &DCI) const; 629 SDValue DAGCombineFastRecipFSQRT(SDValue Op, DAGCombinerInfo &DCI) const; 630 }; 631 632 namespace PPC { 633 FastISel *createFastISel(FunctionLoweringInfo &FuncInfo, 634 const TargetLibraryInfo *LibInfo); 635 } 636 637 bool CC_PPC32_SVR4_Custom_Dummy(unsigned &ValNo, MVT &ValVT, MVT &LocVT, 638 CCValAssign::LocInfo &LocInfo, 639 ISD::ArgFlagsTy &ArgFlags, 640 CCState &State); 641 642 bool CC_PPC32_SVR4_Custom_AlignArgRegs(unsigned &ValNo, MVT &ValVT, 643 MVT &LocVT, 644 CCValAssign::LocInfo &LocInfo, 645 ISD::ArgFlagsTy &ArgFlags, 646 CCState &State); 647 648 bool CC_PPC32_SVR4_Custom_AlignFPArgRegs(unsigned &ValNo, MVT &ValVT, 649 MVT &LocVT, 650 CCValAssign::LocInfo &LocInfo, 651 ISD::ArgFlagsTy &ArgFlags, 652 CCState &State); 653 } 654 655 #endif // LLVM_TARGET_POWERPC_PPC32ISELLOWERING_H 656
