10b57cec5SDimitry Andric //==-- AArch64ISelLowering.h - AArch64 DAG Lowering Interface ----*- C++ -*-==// 20b57cec5SDimitry Andric // 30b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 40b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 50b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 60b57cec5SDimitry Andric // 70b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 80b57cec5SDimitry Andric // 90b57cec5SDimitry Andric // This file defines the interfaces that AArch64 uses to lower LLVM code into a 100b57cec5SDimitry Andric // selection DAG. 110b57cec5SDimitry Andric // 120b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 130b57cec5SDimitry Andric 140b57cec5SDimitry Andric #ifndef LLVM_LIB_TARGET_AARCH64_AARCH64ISELLOWERING_H 150b57cec5SDimitry Andric #define LLVM_LIB_TARGET_AARCH64_AARCH64ISELLOWERING_H 160b57cec5SDimitry Andric 170b57cec5SDimitry Andric #include "AArch64.h" 180b57cec5SDimitry Andric #include "llvm/CodeGen/CallingConvLower.h" 19fe6060f1SDimitry Andric #include "llvm/CodeGen/MachineFunction.h" 200b57cec5SDimitry Andric #include "llvm/CodeGen/SelectionDAG.h" 210b57cec5SDimitry Andric #include "llvm/CodeGen/TargetLowering.h" 220b57cec5SDimitry Andric #include "llvm/IR/CallingConv.h" 230b57cec5SDimitry Andric #include "llvm/IR/Instruction.h" 240b57cec5SDimitry Andric 250b57cec5SDimitry Andric namespace llvm { 260b57cec5SDimitry Andric 270b57cec5SDimitry Andric namespace AArch64ISD { 280b57cec5SDimitry Andric 295ffd83dbSDimitry Andric // For predicated nodes where the result is a vector, the operation is 305ffd83dbSDimitry Andric // controlled by a governing predicate and the inactive lanes are explicitly 315ffd83dbSDimitry Andric // defined with a value, please stick the following naming convention: 325ffd83dbSDimitry Andric // 335ffd83dbSDimitry Andric // _MERGE_OP<n> The result value is a vector with inactive lanes equal 345ffd83dbSDimitry Andric // to source operand OP<n>. 355ffd83dbSDimitry Andric // 365ffd83dbSDimitry Andric // _MERGE_ZERO The result value is a vector with inactive lanes 375ffd83dbSDimitry Andric // actively zeroed. 385ffd83dbSDimitry Andric // 395ffd83dbSDimitry Andric // _MERGE_PASSTHRU The result value is a vector with inactive lanes equal 405ffd83dbSDimitry Andric // to the last source operand which only purpose is being 415ffd83dbSDimitry Andric // a passthru value. 425ffd83dbSDimitry Andric // 435ffd83dbSDimitry Andric // For other cases where no explicit action is needed to set the inactive lanes, 445ffd83dbSDimitry Andric // or when the result is not a vector and it is needed or helpful to 455ffd83dbSDimitry Andric // distinguish a node from similar unpredicated nodes, use: 465ffd83dbSDimitry Andric // 475ffd83dbSDimitry Andric // _PRED 485ffd83dbSDimitry Andric // 490b57cec5SDimitry Andric enum NodeType : unsigned { 500b57cec5SDimitry Andric FIRST_NUMBER = ISD::BUILTIN_OP_END, 510b57cec5SDimitry Andric WrapperLarge, // 4-instruction MOVZ/MOVK sequence for 64-bit addresses. 520b57cec5SDimitry Andric CALL, // Function call. 530b57cec5SDimitry Andric 54fe6060f1SDimitry Andric // Pseudo for a OBJC call that gets emitted together with a special `mov 55fe6060f1SDimitry Andric // x29, x29` marker instruction. 56fe6060f1SDimitry Andric CALL_RVMARKER, 57fe6060f1SDimitry Andric 580b57cec5SDimitry Andric // Produces the full sequence of instructions for getting the thread pointer 590b57cec5SDimitry Andric // offset of a variable into X0, using the TLSDesc model. 600b57cec5SDimitry Andric TLSDESC_CALLSEQ, 610b57cec5SDimitry Andric ADRP, // Page address of a TargetGlobalAddress operand. 620b57cec5SDimitry Andric ADR, // ADR 630b57cec5SDimitry Andric ADDlow, // Add the low 12 bits of a TargetGlobalAddress operand. 640b57cec5SDimitry Andric LOADgot, // Load from automatically generated descriptor (e.g. Global 650b57cec5SDimitry Andric // Offset Table, TLS record). 660b57cec5SDimitry Andric RET_FLAG, // Return with a flag operand. Operand 0 is the chain operand. 670b57cec5SDimitry Andric BRCOND, // Conditional branch instruction; "b.cond". 680b57cec5SDimitry Andric CSEL, 690b57cec5SDimitry Andric CSINV, // Conditional select invert. 700b57cec5SDimitry Andric CSNEG, // Conditional select negate. 710b57cec5SDimitry Andric CSINC, // Conditional select increment. 720b57cec5SDimitry Andric 730b57cec5SDimitry Andric // Pointer to the thread's local storage area. Materialised from TPIDR_EL0 on 740b57cec5SDimitry Andric // ELF. 750b57cec5SDimitry Andric THREAD_POINTER, 760b57cec5SDimitry Andric ADC, 770b57cec5SDimitry Andric SBC, // adc, sbc instructions 780b57cec5SDimitry Andric 79e8d8bef9SDimitry Andric // Predicated instructions where inactive lanes produce undefined results. 805ffd83dbSDimitry Andric ADD_PRED, 815ffd83dbSDimitry Andric FADD_PRED, 82e8d8bef9SDimitry Andric FDIV_PRED, 835ffd83dbSDimitry Andric FMA_PRED, 84e8d8bef9SDimitry Andric FMAXNM_PRED, 85e8d8bef9SDimitry Andric FMINNM_PRED, 86fe6060f1SDimitry Andric FMAX_PRED, 87fe6060f1SDimitry Andric FMIN_PRED, 88e8d8bef9SDimitry Andric FMUL_PRED, 89e8d8bef9SDimitry Andric FSUB_PRED, 90e8d8bef9SDimitry Andric MUL_PRED, 91fe6060f1SDimitry Andric MULHS_PRED, 92fe6060f1SDimitry Andric MULHU_PRED, 93e8d8bef9SDimitry Andric SDIV_PRED, 94e8d8bef9SDimitry Andric SHL_PRED, 95e8d8bef9SDimitry Andric SMAX_PRED, 96e8d8bef9SDimitry Andric SMIN_PRED, 97e8d8bef9SDimitry Andric SRA_PRED, 98e8d8bef9SDimitry Andric SRL_PRED, 99e8d8bef9SDimitry Andric SUB_PRED, 100e8d8bef9SDimitry Andric UDIV_PRED, 101e8d8bef9SDimitry Andric UMAX_PRED, 102e8d8bef9SDimitry Andric UMIN_PRED, 103e8d8bef9SDimitry Andric 104fe6060f1SDimitry Andric // Unpredicated vector instructions 105fe6060f1SDimitry Andric BIC, 106fe6060f1SDimitry Andric 107e8d8bef9SDimitry Andric // Predicated instructions with the result of inactive lanes provided by the 108e8d8bef9SDimitry Andric // last operand. 109e8d8bef9SDimitry Andric FABS_MERGE_PASSTHRU, 110e8d8bef9SDimitry Andric FCEIL_MERGE_PASSTHRU, 111e8d8bef9SDimitry Andric FFLOOR_MERGE_PASSTHRU, 112e8d8bef9SDimitry Andric FNEARBYINT_MERGE_PASSTHRU, 113e8d8bef9SDimitry Andric FNEG_MERGE_PASSTHRU, 114e8d8bef9SDimitry Andric FRECPX_MERGE_PASSTHRU, 115e8d8bef9SDimitry Andric FRINT_MERGE_PASSTHRU, 116e8d8bef9SDimitry Andric FROUND_MERGE_PASSTHRU, 117e8d8bef9SDimitry Andric FROUNDEVEN_MERGE_PASSTHRU, 118e8d8bef9SDimitry Andric FSQRT_MERGE_PASSTHRU, 119e8d8bef9SDimitry Andric FTRUNC_MERGE_PASSTHRU, 120e8d8bef9SDimitry Andric FP_ROUND_MERGE_PASSTHRU, 121e8d8bef9SDimitry Andric FP_EXTEND_MERGE_PASSTHRU, 122e8d8bef9SDimitry Andric UINT_TO_FP_MERGE_PASSTHRU, 123e8d8bef9SDimitry Andric SINT_TO_FP_MERGE_PASSTHRU, 124e8d8bef9SDimitry Andric FCVTZU_MERGE_PASSTHRU, 125e8d8bef9SDimitry Andric FCVTZS_MERGE_PASSTHRU, 126e8d8bef9SDimitry Andric SIGN_EXTEND_INREG_MERGE_PASSTHRU, 127e8d8bef9SDimitry Andric ZERO_EXTEND_INREG_MERGE_PASSTHRU, 128e8d8bef9SDimitry Andric ABS_MERGE_PASSTHRU, 129e8d8bef9SDimitry Andric NEG_MERGE_PASSTHRU, 1305ffd83dbSDimitry Andric 1315ffd83dbSDimitry Andric SETCC_MERGE_ZERO, 1325ffd83dbSDimitry Andric 1330b57cec5SDimitry Andric // Arithmetic instructions which write flags. 1340b57cec5SDimitry Andric ADDS, 1350b57cec5SDimitry Andric SUBS, 1360b57cec5SDimitry Andric ADCS, 1370b57cec5SDimitry Andric SBCS, 1380b57cec5SDimitry Andric ANDS, 1390b57cec5SDimitry Andric 1400b57cec5SDimitry Andric // Conditional compares. Operands: left,right,falsecc,cc,flags 1410b57cec5SDimitry Andric CCMP, 1420b57cec5SDimitry Andric CCMN, 1430b57cec5SDimitry Andric FCCMP, 1440b57cec5SDimitry Andric 1450b57cec5SDimitry Andric // Floating point comparison 1460b57cec5SDimitry Andric FCMP, 1470b57cec5SDimitry Andric 1480b57cec5SDimitry Andric // Scalar extract 1490b57cec5SDimitry Andric EXTR, 1500b57cec5SDimitry Andric 1510b57cec5SDimitry Andric // Scalar-to-vector duplication 1520b57cec5SDimitry Andric DUP, 1530b57cec5SDimitry Andric DUPLANE8, 1540b57cec5SDimitry Andric DUPLANE16, 1550b57cec5SDimitry Andric DUPLANE32, 1560b57cec5SDimitry Andric DUPLANE64, 1570b57cec5SDimitry Andric 1580b57cec5SDimitry Andric // Vector immedate moves 1590b57cec5SDimitry Andric MOVI, 1600b57cec5SDimitry Andric MOVIshift, 1610b57cec5SDimitry Andric MOVIedit, 1620b57cec5SDimitry Andric MOVImsl, 1630b57cec5SDimitry Andric FMOV, 1640b57cec5SDimitry Andric MVNIshift, 1650b57cec5SDimitry Andric MVNImsl, 1660b57cec5SDimitry Andric 1670b57cec5SDimitry Andric // Vector immediate ops 1680b57cec5SDimitry Andric BICi, 1690b57cec5SDimitry Andric ORRi, 1700b57cec5SDimitry Andric 1715ffd83dbSDimitry Andric // Vector bitwise select: similar to ISD::VSELECT but not all bits within an 1720b57cec5SDimitry Andric // element must be identical. 1735ffd83dbSDimitry Andric BSP, 1740b57cec5SDimitry Andric 1750b57cec5SDimitry Andric // Vector shuffles 1760b57cec5SDimitry Andric ZIP1, 1770b57cec5SDimitry Andric ZIP2, 1780b57cec5SDimitry Andric UZP1, 1790b57cec5SDimitry Andric UZP2, 1800b57cec5SDimitry Andric TRN1, 1810b57cec5SDimitry Andric TRN2, 1820b57cec5SDimitry Andric REV16, 1830b57cec5SDimitry Andric REV32, 1840b57cec5SDimitry Andric REV64, 1850b57cec5SDimitry Andric EXT, 186fe6060f1SDimitry Andric SPLICE, 1870b57cec5SDimitry Andric 1880b57cec5SDimitry Andric // Vector shift by scalar 1890b57cec5SDimitry Andric VSHL, 1900b57cec5SDimitry Andric VLSHR, 1910b57cec5SDimitry Andric VASHR, 1920b57cec5SDimitry Andric 1930b57cec5SDimitry Andric // Vector shift by scalar (again) 1940b57cec5SDimitry Andric SQSHL_I, 1950b57cec5SDimitry Andric UQSHL_I, 1960b57cec5SDimitry Andric SQSHLU_I, 1970b57cec5SDimitry Andric SRSHR_I, 1980b57cec5SDimitry Andric URSHR_I, 1990b57cec5SDimitry Andric 2005ffd83dbSDimitry Andric // Vector shift by constant and insert 2015ffd83dbSDimitry Andric VSLI, 2025ffd83dbSDimitry Andric VSRI, 2035ffd83dbSDimitry Andric 2040b57cec5SDimitry Andric // Vector comparisons 2050b57cec5SDimitry Andric CMEQ, 2060b57cec5SDimitry Andric CMGE, 2070b57cec5SDimitry Andric CMGT, 2080b57cec5SDimitry Andric CMHI, 2090b57cec5SDimitry Andric CMHS, 2100b57cec5SDimitry Andric FCMEQ, 2110b57cec5SDimitry Andric FCMGE, 2120b57cec5SDimitry Andric FCMGT, 2130b57cec5SDimitry Andric 2140b57cec5SDimitry Andric // Vector zero comparisons 2150b57cec5SDimitry Andric CMEQz, 2160b57cec5SDimitry Andric CMGEz, 2170b57cec5SDimitry Andric CMGTz, 2180b57cec5SDimitry Andric CMLEz, 2190b57cec5SDimitry Andric CMLTz, 2200b57cec5SDimitry Andric FCMEQz, 2210b57cec5SDimitry Andric FCMGEz, 2220b57cec5SDimitry Andric FCMGTz, 2230b57cec5SDimitry Andric FCMLEz, 2240b57cec5SDimitry Andric FCMLTz, 2250b57cec5SDimitry Andric 2260b57cec5SDimitry Andric // Vector across-lanes addition 2270b57cec5SDimitry Andric // Only the lower result lane is defined. 2280b57cec5SDimitry Andric SADDV, 2290b57cec5SDimitry Andric UADDV, 2300b57cec5SDimitry Andric 231e8d8bef9SDimitry Andric // Vector halving addition 232e8d8bef9SDimitry Andric SHADD, 233e8d8bef9SDimitry Andric UHADD, 234e8d8bef9SDimitry Andric 2355ffd83dbSDimitry Andric // Vector rounding halving addition 2365ffd83dbSDimitry Andric SRHADD, 2375ffd83dbSDimitry Andric URHADD, 2385ffd83dbSDimitry Andric 239fe6060f1SDimitry Andric // Unsigned Add Long Pairwise 240fe6060f1SDimitry Andric UADDLP, 241fe6060f1SDimitry Andric 242fe6060f1SDimitry Andric // udot/sdot instructions 243fe6060f1SDimitry Andric UDOT, 244fe6060f1SDimitry Andric SDOT, 245e8d8bef9SDimitry Andric 2460b57cec5SDimitry Andric // Vector across-lanes min/max 2470b57cec5SDimitry Andric // Only the lower result lane is defined. 2480b57cec5SDimitry Andric SMINV, 2490b57cec5SDimitry Andric UMINV, 2500b57cec5SDimitry Andric SMAXV, 2510b57cec5SDimitry Andric UMAXV, 2520b57cec5SDimitry Andric 253e8d8bef9SDimitry Andric SADDV_PRED, 254e8d8bef9SDimitry Andric UADDV_PRED, 255480093f4SDimitry Andric SMAXV_PRED, 256480093f4SDimitry Andric UMAXV_PRED, 257480093f4SDimitry Andric SMINV_PRED, 258480093f4SDimitry Andric UMINV_PRED, 259480093f4SDimitry Andric ORV_PRED, 260480093f4SDimitry Andric EORV_PRED, 261480093f4SDimitry Andric ANDV_PRED, 262480093f4SDimitry Andric 2635ffd83dbSDimitry Andric // Vector bitwise insertion 2640b57cec5SDimitry Andric BIT, 2650b57cec5SDimitry Andric 2660b57cec5SDimitry Andric // Compare-and-branch 2670b57cec5SDimitry Andric CBZ, 2680b57cec5SDimitry Andric CBNZ, 2690b57cec5SDimitry Andric TBZ, 2700b57cec5SDimitry Andric TBNZ, 2710b57cec5SDimitry Andric 2720b57cec5SDimitry Andric // Tail calls 2730b57cec5SDimitry Andric TC_RETURN, 2740b57cec5SDimitry Andric 2750b57cec5SDimitry Andric // Custom prefetch handling 2760b57cec5SDimitry Andric PREFETCH, 2770b57cec5SDimitry Andric 2780b57cec5SDimitry Andric // {s|u}int to FP within a FP register. 2790b57cec5SDimitry Andric SITOF, 2800b57cec5SDimitry Andric UITOF, 2810b57cec5SDimitry Andric 2820b57cec5SDimitry Andric /// Natural vector cast. ISD::BITCAST is not natural in the big-endian 2830b57cec5SDimitry Andric /// world w.r.t vectors; which causes additional REV instructions to be 2840b57cec5SDimitry Andric /// generated to compensate for the byte-swapping. But sometimes we do 2850b57cec5SDimitry Andric /// need to re-interpret the data in SIMD vector registers in big-endian 2860b57cec5SDimitry Andric /// mode without emitting such REV instructions. 2870b57cec5SDimitry Andric NVCAST, 2880b57cec5SDimitry Andric 289fe6060f1SDimitry Andric MRS, // MRS, also sets the flags via a glue. 290fe6060f1SDimitry Andric 2910b57cec5SDimitry Andric SMULL, 2920b57cec5SDimitry Andric UMULL, 2930b57cec5SDimitry Andric 2940b57cec5SDimitry Andric // Reciprocal estimates and steps. 2955ffd83dbSDimitry Andric FRECPE, 2965ffd83dbSDimitry Andric FRECPS, 2975ffd83dbSDimitry Andric FRSQRTE, 2985ffd83dbSDimitry Andric FRSQRTS, 2990b57cec5SDimitry Andric 3008bcb0991SDimitry Andric SUNPKHI, 3018bcb0991SDimitry Andric SUNPKLO, 3028bcb0991SDimitry Andric UUNPKHI, 3038bcb0991SDimitry Andric UUNPKLO, 3048bcb0991SDimitry Andric 305480093f4SDimitry Andric CLASTA_N, 306480093f4SDimitry Andric CLASTB_N, 307480093f4SDimitry Andric LASTA, 308480093f4SDimitry Andric LASTB, 309480093f4SDimitry Andric TBL, 310480093f4SDimitry Andric 3115ffd83dbSDimitry Andric // Floating-point reductions. 3125ffd83dbSDimitry Andric FADDA_PRED, 3135ffd83dbSDimitry Andric FADDV_PRED, 3145ffd83dbSDimitry Andric FMAXV_PRED, 3155ffd83dbSDimitry Andric FMAXNMV_PRED, 3165ffd83dbSDimitry Andric FMINV_PRED, 3175ffd83dbSDimitry Andric FMINNMV_PRED, 3185ffd83dbSDimitry Andric 319480093f4SDimitry Andric INSR, 320480093f4SDimitry Andric PTEST, 321480093f4SDimitry Andric PTRUE, 322480093f4SDimitry Andric 323e8d8bef9SDimitry Andric BITREVERSE_MERGE_PASSTHRU, 324e8d8bef9SDimitry Andric BSWAP_MERGE_PASSTHRU, 325e8d8bef9SDimitry Andric CTLZ_MERGE_PASSTHRU, 326e8d8bef9SDimitry Andric CTPOP_MERGE_PASSTHRU, 3275ffd83dbSDimitry Andric DUP_MERGE_PASSTHRU, 3285ffd83dbSDimitry Andric INDEX_VECTOR, 3295ffd83dbSDimitry Andric 330e8d8bef9SDimitry Andric // Cast between vectors of the same element type but differ in length. 3315ffd83dbSDimitry Andric REINTERPRET_CAST, 3325ffd83dbSDimitry Andric 3336e75b2fbSDimitry Andric // Nodes to build an LD64B / ST64B 64-bit quantity out of i64, and vice versa 3346e75b2fbSDimitry Andric LS64_BUILD, 3356e75b2fbSDimitry Andric LS64_EXTRACT, 3366e75b2fbSDimitry Andric 3375ffd83dbSDimitry Andric LD1_MERGE_ZERO, 3385ffd83dbSDimitry Andric LD1S_MERGE_ZERO, 3395ffd83dbSDimitry Andric LDNF1_MERGE_ZERO, 3405ffd83dbSDimitry Andric LDNF1S_MERGE_ZERO, 3415ffd83dbSDimitry Andric LDFF1_MERGE_ZERO, 3425ffd83dbSDimitry Andric LDFF1S_MERGE_ZERO, 3435ffd83dbSDimitry Andric LD1RQ_MERGE_ZERO, 3445ffd83dbSDimitry Andric LD1RO_MERGE_ZERO, 3455ffd83dbSDimitry Andric 3465ffd83dbSDimitry Andric // Structured loads. 3475ffd83dbSDimitry Andric SVE_LD2_MERGE_ZERO, 3485ffd83dbSDimitry Andric SVE_LD3_MERGE_ZERO, 3495ffd83dbSDimitry Andric SVE_LD4_MERGE_ZERO, 3505ffd83dbSDimitry Andric 351480093f4SDimitry Andric // Unsigned gather loads. 3525ffd83dbSDimitry Andric GLD1_MERGE_ZERO, 3535ffd83dbSDimitry Andric GLD1_SCALED_MERGE_ZERO, 3545ffd83dbSDimitry Andric GLD1_UXTW_MERGE_ZERO, 3555ffd83dbSDimitry Andric GLD1_SXTW_MERGE_ZERO, 3565ffd83dbSDimitry Andric GLD1_UXTW_SCALED_MERGE_ZERO, 3575ffd83dbSDimitry Andric GLD1_SXTW_SCALED_MERGE_ZERO, 3585ffd83dbSDimitry Andric GLD1_IMM_MERGE_ZERO, 359480093f4SDimitry Andric 360480093f4SDimitry Andric // Signed gather loads 3615ffd83dbSDimitry Andric GLD1S_MERGE_ZERO, 3625ffd83dbSDimitry Andric GLD1S_SCALED_MERGE_ZERO, 3635ffd83dbSDimitry Andric GLD1S_UXTW_MERGE_ZERO, 3645ffd83dbSDimitry Andric GLD1S_SXTW_MERGE_ZERO, 3655ffd83dbSDimitry Andric GLD1S_UXTW_SCALED_MERGE_ZERO, 3665ffd83dbSDimitry Andric GLD1S_SXTW_SCALED_MERGE_ZERO, 3675ffd83dbSDimitry Andric GLD1S_IMM_MERGE_ZERO, 3685ffd83dbSDimitry Andric 3695ffd83dbSDimitry Andric // Unsigned gather loads. 3705ffd83dbSDimitry Andric GLDFF1_MERGE_ZERO, 3715ffd83dbSDimitry Andric GLDFF1_SCALED_MERGE_ZERO, 3725ffd83dbSDimitry Andric GLDFF1_UXTW_MERGE_ZERO, 3735ffd83dbSDimitry Andric GLDFF1_SXTW_MERGE_ZERO, 3745ffd83dbSDimitry Andric GLDFF1_UXTW_SCALED_MERGE_ZERO, 3755ffd83dbSDimitry Andric GLDFF1_SXTW_SCALED_MERGE_ZERO, 3765ffd83dbSDimitry Andric GLDFF1_IMM_MERGE_ZERO, 3775ffd83dbSDimitry Andric 3785ffd83dbSDimitry Andric // Signed gather loads. 3795ffd83dbSDimitry Andric GLDFF1S_MERGE_ZERO, 3805ffd83dbSDimitry Andric GLDFF1S_SCALED_MERGE_ZERO, 3815ffd83dbSDimitry Andric GLDFF1S_UXTW_MERGE_ZERO, 3825ffd83dbSDimitry Andric GLDFF1S_SXTW_MERGE_ZERO, 3835ffd83dbSDimitry Andric GLDFF1S_UXTW_SCALED_MERGE_ZERO, 3845ffd83dbSDimitry Andric GLDFF1S_SXTW_SCALED_MERGE_ZERO, 3855ffd83dbSDimitry Andric GLDFF1S_IMM_MERGE_ZERO, 3865ffd83dbSDimitry Andric 3875ffd83dbSDimitry Andric // Non-temporal gather loads 3885ffd83dbSDimitry Andric GLDNT1_MERGE_ZERO, 3895ffd83dbSDimitry Andric GLDNT1_INDEX_MERGE_ZERO, 3905ffd83dbSDimitry Andric GLDNT1S_MERGE_ZERO, 3915ffd83dbSDimitry Andric 3925ffd83dbSDimitry Andric // Contiguous masked store. 3935ffd83dbSDimitry Andric ST1_PRED, 3945ffd83dbSDimitry Andric 395480093f4SDimitry Andric // Scatter store 3965ffd83dbSDimitry Andric SST1_PRED, 3975ffd83dbSDimitry Andric SST1_SCALED_PRED, 3985ffd83dbSDimitry Andric SST1_UXTW_PRED, 3995ffd83dbSDimitry Andric SST1_SXTW_PRED, 4005ffd83dbSDimitry Andric SST1_UXTW_SCALED_PRED, 4015ffd83dbSDimitry Andric SST1_SXTW_SCALED_PRED, 4025ffd83dbSDimitry Andric SST1_IMM_PRED, 4035ffd83dbSDimitry Andric 4045ffd83dbSDimitry Andric // Non-temporal scatter store 4055ffd83dbSDimitry Andric SSTNT1_PRED, 4065ffd83dbSDimitry Andric SSTNT1_INDEX_PRED, 407480093f4SDimitry Andric 40847395794SDimitry Andric // Strict (exception-raising) floating point comparison 40947395794SDimitry Andric STRICT_FCMP = ISD::FIRST_TARGET_STRICTFP_OPCODE, 41047395794SDimitry Andric STRICT_FCMPE, 41147395794SDimitry Andric 4120b57cec5SDimitry Andric // NEON Load/Store with post-increment base updates 4130b57cec5SDimitry Andric LD2post = ISD::FIRST_TARGET_MEMORY_OPCODE, 4140b57cec5SDimitry Andric LD3post, 4150b57cec5SDimitry Andric LD4post, 4160b57cec5SDimitry Andric ST2post, 4170b57cec5SDimitry Andric ST3post, 4180b57cec5SDimitry Andric ST4post, 4190b57cec5SDimitry Andric LD1x2post, 4200b57cec5SDimitry Andric LD1x3post, 4210b57cec5SDimitry Andric LD1x4post, 4220b57cec5SDimitry Andric ST1x2post, 4230b57cec5SDimitry Andric ST1x3post, 4240b57cec5SDimitry Andric ST1x4post, 4250b57cec5SDimitry Andric LD1DUPpost, 4260b57cec5SDimitry Andric LD2DUPpost, 4270b57cec5SDimitry Andric LD3DUPpost, 4280b57cec5SDimitry Andric LD4DUPpost, 4290b57cec5SDimitry Andric LD1LANEpost, 4300b57cec5SDimitry Andric LD2LANEpost, 4310b57cec5SDimitry Andric LD3LANEpost, 4320b57cec5SDimitry Andric LD4LANEpost, 4330b57cec5SDimitry Andric ST2LANEpost, 4340b57cec5SDimitry Andric ST3LANEpost, 4350b57cec5SDimitry Andric ST4LANEpost, 4360b57cec5SDimitry Andric 4370b57cec5SDimitry Andric STG, 4380b57cec5SDimitry Andric STZG, 4390b57cec5SDimitry Andric ST2G, 440480093f4SDimitry Andric STZ2G, 4410b57cec5SDimitry Andric 442480093f4SDimitry Andric LDP, 4435ffd83dbSDimitry Andric STP, 444e8d8bef9SDimitry Andric STNP, 4450b57cec5SDimitry Andric }; 4460b57cec5SDimitry Andric 4470b57cec5SDimitry Andric } // end namespace AArch64ISD 4480b57cec5SDimitry Andric 4490b57cec5SDimitry Andric namespace { 4500b57cec5SDimitry Andric 4510b57cec5SDimitry Andric // Any instruction that defines a 32-bit result zeros out the high half of the 4520b57cec5SDimitry Andric // register. Truncate can be lowered to EXTRACT_SUBREG. CopyFromReg may 4530b57cec5SDimitry Andric // be copying from a truncate. But any other 32-bit operation will zero-extend 454e8d8bef9SDimitry Andric // up to 64 bits. AssertSext/AssertZext aren't saying anything about the upper 455e8d8bef9SDimitry Andric // 32 bits, they're probably just qualifying a CopyFromReg. 4560b57cec5SDimitry Andric static inline bool isDef32(const SDNode &N) { 4570b57cec5SDimitry Andric unsigned Opc = N.getOpcode(); 4580b57cec5SDimitry Andric return Opc != ISD::TRUNCATE && Opc != TargetOpcode::EXTRACT_SUBREG && 459e8d8bef9SDimitry Andric Opc != ISD::CopyFromReg && Opc != ISD::AssertSext && 460fe6060f1SDimitry Andric Opc != ISD::AssertZext && Opc != ISD::AssertAlign && 461fe6060f1SDimitry Andric Opc != ISD::FREEZE; 4620b57cec5SDimitry Andric } 4630b57cec5SDimitry Andric 4640b57cec5SDimitry Andric } // end anonymous namespace 4650b57cec5SDimitry Andric 466fe6060f1SDimitry Andric namespace AArch64 { 467fe6060f1SDimitry Andric /// Possible values of current rounding mode, which is specified in bits 468fe6060f1SDimitry Andric /// 23:22 of FPCR. 469fe6060f1SDimitry Andric enum Rounding { 470fe6060f1SDimitry Andric RN = 0, // Round to Nearest 471fe6060f1SDimitry Andric RP = 1, // Round towards Plus infinity 472fe6060f1SDimitry Andric RM = 2, // Round towards Minus infinity 473fe6060f1SDimitry Andric RZ = 3, // Round towards Zero 474fe6060f1SDimitry Andric rmMask = 3 // Bit mask selecting rounding mode 475fe6060f1SDimitry Andric }; 476fe6060f1SDimitry Andric 477fe6060f1SDimitry Andric // Bit position of rounding mode bits in FPCR. 478fe6060f1SDimitry Andric const unsigned RoundingBitsPos = 22; 479fe6060f1SDimitry Andric } // namespace AArch64 480fe6060f1SDimitry Andric 4810b57cec5SDimitry Andric class AArch64Subtarget; 4820b57cec5SDimitry Andric class AArch64TargetMachine; 4830b57cec5SDimitry Andric 4840b57cec5SDimitry Andric class AArch64TargetLowering : public TargetLowering { 4850b57cec5SDimitry Andric public: 4860b57cec5SDimitry Andric explicit AArch64TargetLowering(const TargetMachine &TM, 4870b57cec5SDimitry Andric const AArch64Subtarget &STI); 4880b57cec5SDimitry Andric 4890b57cec5SDimitry Andric /// Selects the correct CCAssignFn for a given CallingConvention value. 4900b57cec5SDimitry Andric CCAssignFn *CCAssignFnForCall(CallingConv::ID CC, bool IsVarArg) const; 4910b57cec5SDimitry Andric 4920b57cec5SDimitry Andric /// Selects the correct CCAssignFn for a given CallingConvention value. 4930b57cec5SDimitry Andric CCAssignFn *CCAssignFnForReturn(CallingConv::ID CC) const; 4940b57cec5SDimitry Andric 4950b57cec5SDimitry Andric /// Determine which of the bits specified in Mask are known to be either zero 4960b57cec5SDimitry Andric /// or one and return them in the KnownZero/KnownOne bitsets. 4970b57cec5SDimitry Andric void computeKnownBitsForTargetNode(const SDValue Op, KnownBits &Known, 4980b57cec5SDimitry Andric const APInt &DemandedElts, 4990b57cec5SDimitry Andric const SelectionDAG &DAG, 5000b57cec5SDimitry Andric unsigned Depth = 0) const override; 5010b57cec5SDimitry Andric 5028bcb0991SDimitry Andric MVT getPointerTy(const DataLayout &DL, uint32_t AS = 0) const override { 5038bcb0991SDimitry Andric // Returning i64 unconditionally here (i.e. even for ILP32) means that the 5048bcb0991SDimitry Andric // *DAG* representation of pointers will always be 64-bits. They will be 5058bcb0991SDimitry Andric // truncated and extended when transferred to memory, but the 64-bit DAG 5068bcb0991SDimitry Andric // allows us to use AArch64's addressing modes much more easily. 5078bcb0991SDimitry Andric return MVT::getIntegerVT(64); 5088bcb0991SDimitry Andric } 5098bcb0991SDimitry Andric 5105ffd83dbSDimitry Andric bool targetShrinkDemandedConstant(SDValue Op, const APInt &DemandedBits, 5115ffd83dbSDimitry Andric const APInt &DemandedElts, 5120b57cec5SDimitry Andric TargetLoweringOpt &TLO) const override; 5130b57cec5SDimitry Andric 5140b57cec5SDimitry Andric MVT getScalarShiftAmountTy(const DataLayout &DL, EVT) const override; 5150b57cec5SDimitry Andric 5160b57cec5SDimitry Andric /// Returns true if the target allows unaligned memory accesses of the 5170b57cec5SDimitry Andric /// specified type. 5180b57cec5SDimitry Andric bool allowsMisalignedMemoryAccesses( 519fe6060f1SDimitry Andric EVT VT, unsigned AddrSpace = 0, Align Alignment = Align(1), 5200b57cec5SDimitry Andric MachineMemOperand::Flags Flags = MachineMemOperand::MONone, 5210b57cec5SDimitry Andric bool *Fast = nullptr) const override; 5228bcb0991SDimitry Andric /// LLT variant. 5235ffd83dbSDimitry Andric bool allowsMisalignedMemoryAccesses(LLT Ty, unsigned AddrSpace, 5245ffd83dbSDimitry Andric Align Alignment, 5255ffd83dbSDimitry Andric MachineMemOperand::Flags Flags, 5268bcb0991SDimitry Andric bool *Fast = nullptr) const override; 5270b57cec5SDimitry Andric 5280b57cec5SDimitry Andric /// Provide custom lowering hooks for some operations. 5290b57cec5SDimitry Andric SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const override; 5300b57cec5SDimitry Andric 5310b57cec5SDimitry Andric const char *getTargetNodeName(unsigned Opcode) const override; 5320b57cec5SDimitry Andric 5330b57cec5SDimitry Andric SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const override; 5340b57cec5SDimitry Andric 5350b57cec5SDimitry Andric /// This method returns a target specific FastISel object, or null if the 5360b57cec5SDimitry Andric /// target does not support "fast" ISel. 5370b57cec5SDimitry Andric FastISel *createFastISel(FunctionLoweringInfo &funcInfo, 5380b57cec5SDimitry Andric const TargetLibraryInfo *libInfo) const override; 5390b57cec5SDimitry Andric 5400b57cec5SDimitry Andric bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const override; 5410b57cec5SDimitry Andric 5420b57cec5SDimitry Andric bool isFPImmLegal(const APFloat &Imm, EVT VT, 5430b57cec5SDimitry Andric bool ForCodeSize) const override; 5440b57cec5SDimitry Andric 5450b57cec5SDimitry Andric /// Return true if the given shuffle mask can be codegen'd directly, or if it 5460b57cec5SDimitry Andric /// should be stack expanded. 5470b57cec5SDimitry Andric bool isShuffleMaskLegal(ArrayRef<int> M, EVT VT) const override; 5480b57cec5SDimitry Andric 5490b57cec5SDimitry Andric /// Return the ISD::SETCC ValueType. 5500b57cec5SDimitry Andric EVT getSetCCResultType(const DataLayout &DL, LLVMContext &Context, 5510b57cec5SDimitry Andric EVT VT) const override; 5520b57cec5SDimitry Andric 5530b57cec5SDimitry Andric SDValue ReconstructShuffle(SDValue Op, SelectionDAG &DAG) const; 5540b57cec5SDimitry Andric 5550b57cec5SDimitry Andric MachineBasicBlock *EmitF128CSEL(MachineInstr &MI, 5560b57cec5SDimitry Andric MachineBasicBlock *BB) const; 5570b57cec5SDimitry Andric 5580b57cec5SDimitry Andric MachineBasicBlock *EmitLoweredCatchRet(MachineInstr &MI, 5590b57cec5SDimitry Andric MachineBasicBlock *BB) const; 5600b57cec5SDimitry Andric 5610b57cec5SDimitry Andric MachineBasicBlock * 5620b57cec5SDimitry Andric EmitInstrWithCustomInserter(MachineInstr &MI, 5630b57cec5SDimitry Andric MachineBasicBlock *MBB) const override; 5640b57cec5SDimitry Andric 5650b57cec5SDimitry Andric bool getTgtMemIntrinsic(IntrinsicInfo &Info, const CallInst &I, 5660b57cec5SDimitry Andric MachineFunction &MF, 5670b57cec5SDimitry Andric unsigned Intrinsic) const override; 5680b57cec5SDimitry Andric 5690b57cec5SDimitry Andric bool shouldReduceLoadWidth(SDNode *Load, ISD::LoadExtType ExtTy, 5700b57cec5SDimitry Andric EVT NewVT) const override; 5710b57cec5SDimitry Andric 5720b57cec5SDimitry Andric bool isTruncateFree(Type *Ty1, Type *Ty2) const override; 5730b57cec5SDimitry Andric bool isTruncateFree(EVT VT1, EVT VT2) const override; 5740b57cec5SDimitry Andric 5750b57cec5SDimitry Andric bool isProfitableToHoist(Instruction *I) const override; 5760b57cec5SDimitry Andric 5770b57cec5SDimitry Andric bool isZExtFree(Type *Ty1, Type *Ty2) const override; 5780b57cec5SDimitry Andric bool isZExtFree(EVT VT1, EVT VT2) const override; 5790b57cec5SDimitry Andric bool isZExtFree(SDValue Val, EVT VT2) const override; 5800b57cec5SDimitry Andric 5810b57cec5SDimitry Andric bool shouldSinkOperands(Instruction *I, 5820b57cec5SDimitry Andric SmallVectorImpl<Use *> &Ops) const override; 5830b57cec5SDimitry Andric 5845ffd83dbSDimitry Andric bool hasPairedLoad(EVT LoadedType, Align &RequiredAligment) const override; 5850b57cec5SDimitry Andric 5860b57cec5SDimitry Andric unsigned getMaxSupportedInterleaveFactor() const override { return 4; } 5870b57cec5SDimitry Andric 5880b57cec5SDimitry Andric bool lowerInterleavedLoad(LoadInst *LI, 5890b57cec5SDimitry Andric ArrayRef<ShuffleVectorInst *> Shuffles, 5900b57cec5SDimitry Andric ArrayRef<unsigned> Indices, 5910b57cec5SDimitry Andric unsigned Factor) const override; 5920b57cec5SDimitry Andric bool lowerInterleavedStore(StoreInst *SI, ShuffleVectorInst *SVI, 5930b57cec5SDimitry Andric unsigned Factor) const override; 5940b57cec5SDimitry Andric 5950b57cec5SDimitry Andric bool isLegalAddImmediate(int64_t) const override; 5960b57cec5SDimitry Andric bool isLegalICmpImmediate(int64_t) const override; 5970b57cec5SDimitry Andric 5980b57cec5SDimitry Andric bool shouldConsiderGEPOffsetSplit() const override; 5990b57cec5SDimitry Andric 6005ffd83dbSDimitry Andric EVT getOptimalMemOpType(const MemOp &Op, 6010b57cec5SDimitry Andric const AttributeList &FuncAttributes) const override; 6020b57cec5SDimitry Andric 6035ffd83dbSDimitry Andric LLT getOptimalMemOpLLT(const MemOp &Op, 6048bcb0991SDimitry Andric const AttributeList &FuncAttributes) const override; 6058bcb0991SDimitry Andric 6060b57cec5SDimitry Andric /// Return true if the addressing mode represented by AM is legal for this 6070b57cec5SDimitry Andric /// target, for a load/store of the specified type. 6080b57cec5SDimitry Andric bool isLegalAddressingMode(const DataLayout &DL, const AddrMode &AM, Type *Ty, 6090b57cec5SDimitry Andric unsigned AS, 6100b57cec5SDimitry Andric Instruction *I = nullptr) const override; 6110b57cec5SDimitry Andric 6120b57cec5SDimitry Andric /// Return the cost of the scaling factor used in the addressing 6130b57cec5SDimitry Andric /// mode represented by AM for this target, for a load/store 6140b57cec5SDimitry Andric /// of the specified type. 6150b57cec5SDimitry Andric /// If the AM is supported, the return value must be >= 0. 6160b57cec5SDimitry Andric /// If the AM is not supported, it returns a negative value. 617fe6060f1SDimitry Andric InstructionCost getScalingFactorCost(const DataLayout &DL, const AddrMode &AM, 618fe6060f1SDimitry Andric Type *Ty, unsigned AS) const override; 6190b57cec5SDimitry Andric 6200b57cec5SDimitry Andric /// Return true if an FMA operation is faster than a pair of fmul and fadd 6210b57cec5SDimitry Andric /// instructions. fmuladd intrinsics will be expanded to FMAs when this method 6220b57cec5SDimitry Andric /// returns true, otherwise fmuladd is expanded to fmul + fadd. 623480093f4SDimitry Andric bool isFMAFasterThanFMulAndFAdd(const MachineFunction &MF, 624480093f4SDimitry Andric EVT VT) const override; 625480093f4SDimitry Andric bool isFMAFasterThanFMulAndFAdd(const Function &F, Type *Ty) const override; 6260b57cec5SDimitry Andric 627fe6060f1SDimitry Andric bool generateFMAsInMachineCombiner(EVT VT, 628fe6060f1SDimitry Andric CodeGenOpt::Level OptLevel) const override; 629fe6060f1SDimitry Andric 6300b57cec5SDimitry Andric const MCPhysReg *getScratchRegisters(CallingConv::ID CC) const override; 6310b57cec5SDimitry Andric 6320b57cec5SDimitry Andric /// Returns false if N is a bit extraction pattern of (X >> C) & Mask. 6330b57cec5SDimitry Andric bool isDesirableToCommuteWithShift(const SDNode *N, 6340b57cec5SDimitry Andric CombineLevel Level) const override; 6350b57cec5SDimitry Andric 6360b57cec5SDimitry Andric /// Returns true if it is beneficial to convert a load of a constant 6370b57cec5SDimitry Andric /// to just the constant itself. 6380b57cec5SDimitry Andric bool shouldConvertConstantLoadToIntImm(const APInt &Imm, 6390b57cec5SDimitry Andric Type *Ty) const override; 6400b57cec5SDimitry Andric 6410b57cec5SDimitry Andric /// Return true if EXTRACT_SUBVECTOR is cheap for this result type 6420b57cec5SDimitry Andric /// with this index. 6430b57cec5SDimitry Andric bool isExtractSubvectorCheap(EVT ResVT, EVT SrcVT, 6440b57cec5SDimitry Andric unsigned Index) const override; 6450b57cec5SDimitry Andric 6465ffd83dbSDimitry Andric bool shouldFormOverflowOp(unsigned Opcode, EVT VT, 6475ffd83dbSDimitry Andric bool MathUsed) const override { 6485ffd83dbSDimitry Andric // Using overflow ops for overflow checks only should beneficial on 6495ffd83dbSDimitry Andric // AArch64. 6505ffd83dbSDimitry Andric return TargetLowering::shouldFormOverflowOp(Opcode, VT, true); 6515ffd83dbSDimitry Andric } 6525ffd83dbSDimitry Andric 653fe6060f1SDimitry Andric Value *emitLoadLinked(IRBuilderBase &Builder, Type *ValueTy, Value *Addr, 6540b57cec5SDimitry Andric AtomicOrdering Ord) const override; 655fe6060f1SDimitry Andric Value *emitStoreConditional(IRBuilderBase &Builder, Value *Val, Value *Addr, 656fe6060f1SDimitry Andric AtomicOrdering Ord) const override; 6570b57cec5SDimitry Andric 658fe6060f1SDimitry Andric void emitAtomicCmpXchgNoStoreLLBalance(IRBuilderBase &Builder) const override; 6590b57cec5SDimitry Andric 6600b57cec5SDimitry Andric TargetLoweringBase::AtomicExpansionKind 6610b57cec5SDimitry Andric shouldExpandAtomicLoadInIR(LoadInst *LI) const override; 6620b57cec5SDimitry Andric bool shouldExpandAtomicStoreInIR(StoreInst *SI) const override; 6630b57cec5SDimitry Andric TargetLoweringBase::AtomicExpansionKind 6640b57cec5SDimitry Andric shouldExpandAtomicRMWInIR(AtomicRMWInst *AI) const override; 6650b57cec5SDimitry Andric 6660b57cec5SDimitry Andric TargetLoweringBase::AtomicExpansionKind 6670b57cec5SDimitry Andric shouldExpandAtomicCmpXchgInIR(AtomicCmpXchgInst *AI) const override; 6680b57cec5SDimitry Andric 6690b57cec5SDimitry Andric bool useLoadStackGuardNode() const override; 6700b57cec5SDimitry Andric TargetLoweringBase::LegalizeTypeAction 6710b57cec5SDimitry Andric getPreferredVectorAction(MVT VT) const override; 6720b57cec5SDimitry Andric 6730b57cec5SDimitry Andric /// If the target has a standard location for the stack protector cookie, 6740b57cec5SDimitry Andric /// returns the address of that location. Otherwise, returns nullptr. 675fe6060f1SDimitry Andric Value *getIRStackGuard(IRBuilderBase &IRB) const override; 6760b57cec5SDimitry Andric 6770b57cec5SDimitry Andric void insertSSPDeclarations(Module &M) const override; 6780b57cec5SDimitry Andric Value *getSDagStackGuard(const Module &M) const override; 6790b57cec5SDimitry Andric Function *getSSPStackGuardCheck(const Module &M) const override; 6800b57cec5SDimitry Andric 6810b57cec5SDimitry Andric /// If the target has a standard location for the unsafe stack pointer, 6820b57cec5SDimitry Andric /// returns the address of that location. Otherwise, returns nullptr. 683fe6060f1SDimitry Andric Value *getSafeStackPointerLocation(IRBuilderBase &IRB) const override; 6840b57cec5SDimitry Andric 6850b57cec5SDimitry Andric /// If a physical register, this returns the register that receives the 6860b57cec5SDimitry Andric /// exception address on entry to an EH pad. 6875ffd83dbSDimitry Andric Register 6880b57cec5SDimitry Andric getExceptionPointerRegister(const Constant *PersonalityFn) const override { 6890b57cec5SDimitry Andric // FIXME: This is a guess. Has this been defined yet? 6900b57cec5SDimitry Andric return AArch64::X0; 6910b57cec5SDimitry Andric } 6920b57cec5SDimitry Andric 6930b57cec5SDimitry Andric /// If a physical register, this returns the register that receives the 6940b57cec5SDimitry Andric /// exception typeid on entry to a landing pad. 6955ffd83dbSDimitry Andric Register 6960b57cec5SDimitry Andric getExceptionSelectorRegister(const Constant *PersonalityFn) const override { 6970b57cec5SDimitry Andric // FIXME: This is a guess. Has this been defined yet? 6980b57cec5SDimitry Andric return AArch64::X1; 6990b57cec5SDimitry Andric } 7000b57cec5SDimitry Andric 7010b57cec5SDimitry Andric bool isIntDivCheap(EVT VT, AttributeList Attr) const override; 7020b57cec5SDimitry Andric 7030b57cec5SDimitry Andric bool canMergeStoresTo(unsigned AddressSpace, EVT MemVT, 7040b57cec5SDimitry Andric const SelectionDAG &DAG) const override { 7050b57cec5SDimitry Andric // Do not merge to float value size (128 bytes) if no implicit 7060b57cec5SDimitry Andric // float attribute is set. 7070b57cec5SDimitry Andric 7080b57cec5SDimitry Andric bool NoFloat = DAG.getMachineFunction().getFunction().hasFnAttribute( 7090b57cec5SDimitry Andric Attribute::NoImplicitFloat); 7100b57cec5SDimitry Andric 7110b57cec5SDimitry Andric if (NoFloat) 7120b57cec5SDimitry Andric return (MemVT.getSizeInBits() <= 64); 7130b57cec5SDimitry Andric return true; 7140b57cec5SDimitry Andric } 7150b57cec5SDimitry Andric 7160b57cec5SDimitry Andric bool isCheapToSpeculateCttz() const override { 7170b57cec5SDimitry Andric return true; 7180b57cec5SDimitry Andric } 7190b57cec5SDimitry Andric 7200b57cec5SDimitry Andric bool isCheapToSpeculateCtlz() const override { 7210b57cec5SDimitry Andric return true; 7220b57cec5SDimitry Andric } 7230b57cec5SDimitry Andric 7240b57cec5SDimitry Andric bool isMaskAndCmp0FoldingBeneficial(const Instruction &AndI) const override; 7250b57cec5SDimitry Andric 7260b57cec5SDimitry Andric bool hasAndNotCompare(SDValue V) const override { 7270b57cec5SDimitry Andric // We can use bics for any scalar. 7280b57cec5SDimitry Andric return V.getValueType().isScalarInteger(); 7290b57cec5SDimitry Andric } 7300b57cec5SDimitry Andric 7310b57cec5SDimitry Andric bool hasAndNot(SDValue Y) const override { 7320b57cec5SDimitry Andric EVT VT = Y.getValueType(); 7330b57cec5SDimitry Andric 7340b57cec5SDimitry Andric if (!VT.isVector()) 7350b57cec5SDimitry Andric return hasAndNotCompare(Y); 7360b57cec5SDimitry Andric 7370b57cec5SDimitry Andric return VT.getSizeInBits() >= 64; // vector 'bic' 7380b57cec5SDimitry Andric } 7390b57cec5SDimitry Andric 7408bcb0991SDimitry Andric bool shouldProduceAndByConstByHoistingConstFromShiftsLHSOfAnd( 7418bcb0991SDimitry Andric SDValue X, ConstantSDNode *XC, ConstantSDNode *CC, SDValue Y, 7428bcb0991SDimitry Andric unsigned OldShiftOpcode, unsigned NewShiftOpcode, 7438bcb0991SDimitry Andric SelectionDAG &DAG) const override; 7448bcb0991SDimitry Andric 7450b57cec5SDimitry Andric bool shouldExpandShift(SelectionDAG &DAG, SDNode *N) const override; 7460b57cec5SDimitry Andric 7470b57cec5SDimitry Andric bool shouldTransformSignedTruncationCheck(EVT XVT, 7480b57cec5SDimitry Andric unsigned KeptBits) const override { 7490b57cec5SDimitry Andric // For vectors, we don't have a preference.. 7500b57cec5SDimitry Andric if (XVT.isVector()) 7510b57cec5SDimitry Andric return false; 7520b57cec5SDimitry Andric 7530b57cec5SDimitry Andric auto VTIsOk = [](EVT VT) -> bool { 7540b57cec5SDimitry Andric return VT == MVT::i8 || VT == MVT::i16 || VT == MVT::i32 || 7550b57cec5SDimitry Andric VT == MVT::i64; 7560b57cec5SDimitry Andric }; 7570b57cec5SDimitry Andric 7580b57cec5SDimitry Andric // We are ok with KeptBitsVT being byte/word/dword, what SXT supports. 7590b57cec5SDimitry Andric // XVT will be larger than KeptBitsVT. 7600b57cec5SDimitry Andric MVT KeptBitsVT = MVT::getIntegerVT(KeptBits); 7610b57cec5SDimitry Andric return VTIsOk(XVT) && VTIsOk(KeptBitsVT); 7620b57cec5SDimitry Andric } 7630b57cec5SDimitry Andric 7640b57cec5SDimitry Andric bool preferIncOfAddToSubOfNot(EVT VT) const override; 7650b57cec5SDimitry Andric 7660b57cec5SDimitry Andric bool hasBitPreservingFPLogic(EVT VT) const override { 7670b57cec5SDimitry Andric // FIXME: Is this always true? It should be true for vectors at least. 7680b57cec5SDimitry Andric return VT == MVT::f32 || VT == MVT::f64; 7690b57cec5SDimitry Andric } 7700b57cec5SDimitry Andric 7710b57cec5SDimitry Andric bool supportSplitCSR(MachineFunction *MF) const override { 7720b57cec5SDimitry Andric return MF->getFunction().getCallingConv() == CallingConv::CXX_FAST_TLS && 7730b57cec5SDimitry Andric MF->getFunction().hasFnAttribute(Attribute::NoUnwind); 7740b57cec5SDimitry Andric } 7750b57cec5SDimitry Andric void initializeSplitCSR(MachineBasicBlock *Entry) const override; 7760b57cec5SDimitry Andric void insertCopiesSplitCSR( 7770b57cec5SDimitry Andric MachineBasicBlock *Entry, 7780b57cec5SDimitry Andric const SmallVectorImpl<MachineBasicBlock *> &Exits) const override; 7790b57cec5SDimitry Andric 7800b57cec5SDimitry Andric bool supportSwiftError() const override { 7810b57cec5SDimitry Andric return true; 7820b57cec5SDimitry Andric } 7830b57cec5SDimitry Andric 7840b57cec5SDimitry Andric /// Enable aggressive FMA fusion on targets that want it. 7850b57cec5SDimitry Andric bool enableAggressiveFMAFusion(EVT VT) const override; 7860b57cec5SDimitry Andric 7870b57cec5SDimitry Andric /// Returns the size of the platform's va_list object. 7880b57cec5SDimitry Andric unsigned getVaListSizeInBits(const DataLayout &DL) const override; 7890b57cec5SDimitry Andric 7900b57cec5SDimitry Andric /// Returns true if \p VecTy is a legal interleaved access type. This 7910b57cec5SDimitry Andric /// function checks the vector element type and the overall width of the 7920b57cec5SDimitry Andric /// vector. 7930b57cec5SDimitry Andric bool isLegalInterleavedAccessType(VectorType *VecTy, 7940b57cec5SDimitry Andric const DataLayout &DL) const; 7950b57cec5SDimitry Andric 7960b57cec5SDimitry Andric /// Returns the number of interleaved accesses that will be generated when 7970b57cec5SDimitry Andric /// lowering accesses of the given type. 7980b57cec5SDimitry Andric unsigned getNumInterleavedAccesses(VectorType *VecTy, 7990b57cec5SDimitry Andric const DataLayout &DL) const; 8000b57cec5SDimitry Andric 8015ffd83dbSDimitry Andric MachineMemOperand::Flags getTargetMMOFlags( 8025ffd83dbSDimitry Andric const Instruction &I) const override; 8030b57cec5SDimitry Andric 804fe6060f1SDimitry Andric bool functionArgumentNeedsConsecutiveRegisters( 805fe6060f1SDimitry Andric Type *Ty, CallingConv::ID CallConv, bool isVarArg, 806fe6060f1SDimitry Andric const DataLayout &DL) const override; 807fe6060f1SDimitry Andric 8080b57cec5SDimitry Andric /// Used for exception handling on Win64. 8090b57cec5SDimitry Andric bool needsFixedCatchObjects() const override; 8105ffd83dbSDimitry Andric 8115ffd83dbSDimitry Andric bool fallBackToDAGISel(const Instruction &Inst) const override; 8125ffd83dbSDimitry Andric 8135ffd83dbSDimitry Andric /// SVE code generation for fixed length vectors does not custom lower 8145ffd83dbSDimitry Andric /// BUILD_VECTOR. This makes BUILD_VECTOR legalisation a source of stores to 8155ffd83dbSDimitry Andric /// merge. However, merging them creates a BUILD_VECTOR that is just as 8165ffd83dbSDimitry Andric /// illegal as the original, thus leading to an infinite legalisation loop. 8175ffd83dbSDimitry Andric /// NOTE: Once BUILD_VECTOR is legal or can be custom lowered for all legal 8185ffd83dbSDimitry Andric /// vector types this override can be removed. 819e8d8bef9SDimitry Andric bool mergeStoresAfterLegalization(EVT VT) const override; 8205ffd83dbSDimitry Andric 821fe6060f1SDimitry Andric // If the platform/function should have a redzone, return the size in bytes. 822fe6060f1SDimitry Andric unsigned getRedZoneSize(const Function &F) const { 823fe6060f1SDimitry Andric if (F.hasFnAttribute(Attribute::NoRedZone)) 824fe6060f1SDimitry Andric return 0; 825fe6060f1SDimitry Andric return 128; 826fe6060f1SDimitry Andric } 827fe6060f1SDimitry Andric 828fe6060f1SDimitry Andric bool isAllActivePredicate(SDValue N) const; 829fe6060f1SDimitry Andric EVT getPromotedVTForPredicate(EVT VT) const; 830fe6060f1SDimitry Andric 8316e75b2fbSDimitry Andric EVT getAsmOperandValueType(const DataLayout &DL, Type *Ty, 8326e75b2fbSDimitry Andric bool AllowUnknown = false) const override; 8336e75b2fbSDimitry Andric 8340b57cec5SDimitry Andric private: 8350b57cec5SDimitry Andric /// Keep a pointer to the AArch64Subtarget around so that we can 8360b57cec5SDimitry Andric /// make the right decision when generating code for different targets. 8370b57cec5SDimitry Andric const AArch64Subtarget *Subtarget; 8380b57cec5SDimitry Andric 8390b57cec5SDimitry Andric bool isExtFreeImpl(const Instruction *Ext) const override; 8400b57cec5SDimitry Andric 841fe6060f1SDimitry Andric void addTypeForNEON(MVT VT); 8425ffd83dbSDimitry Andric void addTypeForFixedLengthSVE(MVT VT); 8430b57cec5SDimitry Andric void addDRTypeForNEON(MVT VT); 8440b57cec5SDimitry Andric void addQRTypeForNEON(MVT VT); 8450b57cec5SDimitry Andric 8460b57cec5SDimitry Andric SDValue LowerFormalArguments(SDValue Chain, CallingConv::ID CallConv, 8470b57cec5SDimitry Andric bool isVarArg, 8480b57cec5SDimitry Andric const SmallVectorImpl<ISD::InputArg> &Ins, 8490b57cec5SDimitry Andric const SDLoc &DL, SelectionDAG &DAG, 8500b57cec5SDimitry Andric SmallVectorImpl<SDValue> &InVals) const override; 8510b57cec5SDimitry Andric 8520b57cec5SDimitry Andric SDValue LowerCall(CallLoweringInfo & /*CLI*/, 8530b57cec5SDimitry Andric SmallVectorImpl<SDValue> &InVals) const override; 8540b57cec5SDimitry Andric 8550b57cec5SDimitry Andric SDValue LowerCallResult(SDValue Chain, SDValue InFlag, 8560b57cec5SDimitry Andric CallingConv::ID CallConv, bool isVarArg, 8570b57cec5SDimitry Andric const SmallVectorImpl<ISD::InputArg> &Ins, 8580b57cec5SDimitry Andric const SDLoc &DL, SelectionDAG &DAG, 8590b57cec5SDimitry Andric SmallVectorImpl<SDValue> &InVals, bool isThisReturn, 8600b57cec5SDimitry Andric SDValue ThisVal) const; 8610b57cec5SDimitry Andric 862fe6060f1SDimitry Andric SDValue LowerLOAD(SDValue Op, SelectionDAG &DAG) const; 8630b57cec5SDimitry Andric SDValue LowerSTORE(SDValue Op, SelectionDAG &DAG) const; 864e8d8bef9SDimitry Andric SDValue LowerABS(SDValue Op, SelectionDAG &DAG) const; 865e8d8bef9SDimitry Andric 866e8d8bef9SDimitry Andric SDValue LowerMGATHER(SDValue Op, SelectionDAG &DAG) const; 867e8d8bef9SDimitry Andric SDValue LowerMSCATTER(SDValue Op, SelectionDAG &DAG) const; 8680b57cec5SDimitry Andric 869fe6060f1SDimitry Andric SDValue LowerMLOAD(SDValue Op, SelectionDAG &DAG) const; 870fe6060f1SDimitry Andric 8710b57cec5SDimitry Andric SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG) const; 8720b57cec5SDimitry Andric 8730b57cec5SDimitry Andric bool isEligibleForTailCallOptimization( 8740b57cec5SDimitry Andric SDValue Callee, CallingConv::ID CalleeCC, bool isVarArg, 8750b57cec5SDimitry Andric const SmallVectorImpl<ISD::OutputArg> &Outs, 8760b57cec5SDimitry Andric const SmallVectorImpl<SDValue> &OutVals, 8770b57cec5SDimitry Andric const SmallVectorImpl<ISD::InputArg> &Ins, SelectionDAG &DAG) const; 8780b57cec5SDimitry Andric 8790b57cec5SDimitry Andric /// Finds the incoming stack arguments which overlap the given fixed stack 8800b57cec5SDimitry Andric /// object and incorporates their load into the current chain. This prevents 8810b57cec5SDimitry Andric /// an upcoming store from clobbering the stack argument before it's used. 8820b57cec5SDimitry Andric SDValue addTokenForArgument(SDValue Chain, SelectionDAG &DAG, 8830b57cec5SDimitry Andric MachineFrameInfo &MFI, int ClobberedFI) const; 8840b57cec5SDimitry Andric 8850b57cec5SDimitry Andric bool DoesCalleeRestoreStack(CallingConv::ID CallCC, bool TailCallOpt) const; 8860b57cec5SDimitry Andric 8870b57cec5SDimitry Andric void saveVarArgRegisters(CCState &CCInfo, SelectionDAG &DAG, const SDLoc &DL, 8880b57cec5SDimitry Andric SDValue &Chain) const; 8890b57cec5SDimitry Andric 8900b57cec5SDimitry Andric bool CanLowerReturn(CallingConv::ID CallConv, MachineFunction &MF, 8910b57cec5SDimitry Andric bool isVarArg, 8920b57cec5SDimitry Andric const SmallVectorImpl<ISD::OutputArg> &Outs, 8930b57cec5SDimitry Andric LLVMContext &Context) const override; 8940b57cec5SDimitry Andric 8950b57cec5SDimitry Andric SDValue LowerReturn(SDValue Chain, CallingConv::ID CallConv, bool isVarArg, 8960b57cec5SDimitry Andric const SmallVectorImpl<ISD::OutputArg> &Outs, 8970b57cec5SDimitry Andric const SmallVectorImpl<SDValue> &OutVals, const SDLoc &DL, 8980b57cec5SDimitry Andric SelectionDAG &DAG) const override; 8990b57cec5SDimitry Andric 9000b57cec5SDimitry Andric SDValue getTargetNode(GlobalAddressSDNode *N, EVT Ty, SelectionDAG &DAG, 9010b57cec5SDimitry Andric unsigned Flag) const; 9020b57cec5SDimitry Andric SDValue getTargetNode(JumpTableSDNode *N, EVT Ty, SelectionDAG &DAG, 9030b57cec5SDimitry Andric unsigned Flag) const; 9040b57cec5SDimitry Andric SDValue getTargetNode(ConstantPoolSDNode *N, EVT Ty, SelectionDAG &DAG, 9050b57cec5SDimitry Andric unsigned Flag) const; 9060b57cec5SDimitry Andric SDValue getTargetNode(BlockAddressSDNode *N, EVT Ty, SelectionDAG &DAG, 9070b57cec5SDimitry Andric unsigned Flag) const; 9080b57cec5SDimitry Andric template <class NodeTy> 9090b57cec5SDimitry Andric SDValue getGOT(NodeTy *N, SelectionDAG &DAG, unsigned Flags = 0) const; 9100b57cec5SDimitry Andric template <class NodeTy> 9110b57cec5SDimitry Andric SDValue getAddrLarge(NodeTy *N, SelectionDAG &DAG, unsigned Flags = 0) const; 9120b57cec5SDimitry Andric template <class NodeTy> 9130b57cec5SDimitry Andric SDValue getAddr(NodeTy *N, SelectionDAG &DAG, unsigned Flags = 0) const; 9140b57cec5SDimitry Andric template <class NodeTy> 9150b57cec5SDimitry Andric SDValue getAddrTiny(NodeTy *N, SelectionDAG &DAG, unsigned Flags = 0) const; 9160b57cec5SDimitry Andric SDValue LowerADDROFRETURNADDR(SDValue Op, SelectionDAG &DAG) const; 9170b57cec5SDimitry Andric SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const; 9180b57cec5SDimitry Andric SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const; 9190b57cec5SDimitry Andric SDValue LowerDarwinGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const; 9200b57cec5SDimitry Andric SDValue LowerELFGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const; 921480093f4SDimitry Andric SDValue LowerELFTLSLocalExec(const GlobalValue *GV, SDValue ThreadBase, 922480093f4SDimitry Andric const SDLoc &DL, SelectionDAG &DAG) const; 9230b57cec5SDimitry Andric SDValue LowerELFTLSDescCallSeq(SDValue SymAddr, const SDLoc &DL, 9240b57cec5SDimitry Andric SelectionDAG &DAG) const; 9250b57cec5SDimitry Andric SDValue LowerWindowsGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const; 9260b57cec5SDimitry Andric SDValue LowerSETCC(SDValue Op, SelectionDAG &DAG) const; 9270b57cec5SDimitry Andric SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG) const; 9280b57cec5SDimitry Andric SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG) const; 9290b57cec5SDimitry Andric SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const; 9300b57cec5SDimitry Andric SDValue LowerSELECT_CC(ISD::CondCode CC, SDValue LHS, SDValue RHS, 9310b57cec5SDimitry Andric SDValue TVal, SDValue FVal, const SDLoc &dl, 9320b57cec5SDimitry Andric SelectionDAG &DAG) const; 9330b57cec5SDimitry Andric SDValue LowerJumpTable(SDValue Op, SelectionDAG &DAG) const; 9340b57cec5SDimitry Andric SDValue LowerBR_JT(SDValue Op, SelectionDAG &DAG) const; 9350b57cec5SDimitry Andric SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG) const; 9360b57cec5SDimitry Andric SDValue LowerBlockAddress(SDValue Op, SelectionDAG &DAG) const; 9370b57cec5SDimitry Andric SDValue LowerAAPCS_VASTART(SDValue Op, SelectionDAG &DAG) const; 9380b57cec5SDimitry Andric SDValue LowerDarwin_VASTART(SDValue Op, SelectionDAG &DAG) const; 9390b57cec5SDimitry Andric SDValue LowerWin64_VASTART(SDValue Op, SelectionDAG &DAG) const; 9400b57cec5SDimitry Andric SDValue LowerVASTART(SDValue Op, SelectionDAG &DAG) const; 9410b57cec5SDimitry Andric SDValue LowerVACOPY(SDValue Op, SelectionDAG &DAG) const; 9420b57cec5SDimitry Andric SDValue LowerVAARG(SDValue Op, SelectionDAG &DAG) const; 9430b57cec5SDimitry Andric SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const; 9440b57cec5SDimitry Andric SDValue LowerSPONENTRY(SDValue Op, SelectionDAG &DAG) const; 9450b57cec5SDimitry Andric SDValue LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const; 9460b57cec5SDimitry Andric SDValue LowerFLT_ROUNDS_(SDValue Op, SelectionDAG &DAG) const; 947fe6060f1SDimitry Andric SDValue LowerSET_ROUNDING(SDValue Op, SelectionDAG &DAG) const; 9480b57cec5SDimitry Andric SDValue LowerINSERT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) const; 9490b57cec5SDimitry Andric SDValue LowerEXTRACT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) const; 9500b57cec5SDimitry Andric SDValue LowerSCALAR_TO_VECTOR(SDValue Op, SelectionDAG &DAG) const; 9510b57cec5SDimitry Andric SDValue LowerBUILD_VECTOR(SDValue Op, SelectionDAG &DAG) const; 9520b57cec5SDimitry Andric SDValue LowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) const; 9538bcb0991SDimitry Andric SDValue LowerSPLAT_VECTOR(SDValue Op, SelectionDAG &DAG) const; 9545ffd83dbSDimitry Andric SDValue LowerDUPQLane(SDValue Op, SelectionDAG &DAG) const; 955e8d8bef9SDimitry Andric SDValue LowerToPredicatedOp(SDValue Op, SelectionDAG &DAG, unsigned NewOp, 956e8d8bef9SDimitry Andric bool OverrideNEON = false) const; 957e8d8bef9SDimitry Andric SDValue LowerToScalableOp(SDValue Op, SelectionDAG &DAG) const; 958fe6060f1SDimitry Andric SDValue LowerVECTOR_SPLICE(SDValue Op, SelectionDAG &DAG) const; 9590b57cec5SDimitry Andric SDValue LowerEXTRACT_SUBVECTOR(SDValue Op, SelectionDAG &DAG) const; 9605ffd83dbSDimitry Andric SDValue LowerINSERT_SUBVECTOR(SDValue Op, SelectionDAG &DAG) const; 961e8d8bef9SDimitry Andric SDValue LowerDIV(SDValue Op, SelectionDAG &DAG) const; 962e8d8bef9SDimitry Andric SDValue LowerMUL(SDValue Op, SelectionDAG &DAG) const; 9630b57cec5SDimitry Andric SDValue LowerVectorSRA_SRL_SHL(SDValue Op, SelectionDAG &DAG) const; 964fe6060f1SDimitry Andric SDValue LowerShiftParts(SDValue Op, SelectionDAG &DAG) const; 9650b57cec5SDimitry Andric SDValue LowerVSETCC(SDValue Op, SelectionDAG &DAG) const; 9660b57cec5SDimitry Andric SDValue LowerCTPOP(SDValue Op, SelectionDAG &DAG) const; 967e8d8bef9SDimitry Andric SDValue LowerCTTZ(SDValue Op, SelectionDAG &DAG) const; 968fe6060f1SDimitry Andric SDValue LowerBitreverse(SDValue Op, SelectionDAG &DAG) const; 9690b57cec5SDimitry Andric SDValue LowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const; 9700b57cec5SDimitry Andric SDValue LowerFP_EXTEND(SDValue Op, SelectionDAG &DAG) const; 9710b57cec5SDimitry Andric SDValue LowerFP_ROUND(SDValue Op, SelectionDAG &DAG) const; 9720b57cec5SDimitry Andric SDValue LowerVectorFP_TO_INT(SDValue Op, SelectionDAG &DAG) const; 9730b57cec5SDimitry Andric SDValue LowerFP_TO_INT(SDValue Op, SelectionDAG &DAG) const; 974fe6060f1SDimitry Andric SDValue LowerFP_TO_INT_SAT(SDValue Op, SelectionDAG &DAG) const; 9750b57cec5SDimitry Andric SDValue LowerINT_TO_FP(SDValue Op, SelectionDAG &DAG) const; 976e8d8bef9SDimitry Andric SDValue LowerVectorINT_TO_FP(SDValue Op, SelectionDAG &DAG) const; 9770b57cec5SDimitry Andric SDValue LowerVectorOR(SDValue Op, SelectionDAG &DAG) const; 978e8d8bef9SDimitry Andric SDValue LowerXOR(SDValue Op, SelectionDAG &DAG) const; 9790b57cec5SDimitry Andric SDValue LowerCONCAT_VECTORS(SDValue Op, SelectionDAG &DAG) const; 9800b57cec5SDimitry Andric SDValue LowerFSINCOS(SDValue Op, SelectionDAG &DAG) const; 981fe6060f1SDimitry Andric SDValue LowerBITCAST(SDValue Op, SelectionDAG &DAG) const; 9825ffd83dbSDimitry Andric SDValue LowerVSCALE(SDValue Op, SelectionDAG &DAG) const; 9835ffd83dbSDimitry Andric SDValue LowerTRUNCATE(SDValue Op, SelectionDAG &DAG) const; 9840b57cec5SDimitry Andric SDValue LowerVECREDUCE(SDValue Op, SelectionDAG &DAG) const; 9850b57cec5SDimitry Andric SDValue LowerATOMIC_LOAD_SUB(SDValue Op, SelectionDAG &DAG) const; 9860b57cec5SDimitry Andric SDValue LowerATOMIC_LOAD_AND(SDValue Op, SelectionDAG &DAG) const; 9870b57cec5SDimitry Andric SDValue LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG) const; 9880b57cec5SDimitry Andric SDValue LowerWindowsDYNAMIC_STACKALLOC(SDValue Op, SDValue Chain, 9890b57cec5SDimitry Andric SDValue &Size, 9900b57cec5SDimitry Andric SelectionDAG &DAG) const; 9915ffd83dbSDimitry Andric SDValue LowerSVEStructLoad(unsigned Intrinsic, ArrayRef<SDValue> LoadOps, 9925ffd83dbSDimitry Andric EVT VT, SelectionDAG &DAG, const SDLoc &DL) const; 9935ffd83dbSDimitry Andric 994e8d8bef9SDimitry Andric SDValue LowerFixedLengthVectorIntDivideToSVE(SDValue Op, 995e8d8bef9SDimitry Andric SelectionDAG &DAG) const; 996e8d8bef9SDimitry Andric SDValue LowerFixedLengthVectorIntExtendToSVE(SDValue Op, 997e8d8bef9SDimitry Andric SelectionDAG &DAG) const; 9985ffd83dbSDimitry Andric SDValue LowerFixedLengthVectorLoadToSVE(SDValue Op, SelectionDAG &DAG) const; 999fe6060f1SDimitry Andric SDValue LowerFixedLengthVectorMLoadToSVE(SDValue Op, SelectionDAG &DAG) const; 1000e8d8bef9SDimitry Andric SDValue LowerVECREDUCE_SEQ_FADD(SDValue ScalarOp, SelectionDAG &DAG) const; 1001e8d8bef9SDimitry Andric SDValue LowerPredReductionToSVE(SDValue ScalarOp, SelectionDAG &DAG) const; 1002e8d8bef9SDimitry Andric SDValue LowerReductionToSVE(unsigned Opcode, SDValue ScalarOp, 1003e8d8bef9SDimitry Andric SelectionDAG &DAG) const; 1004e8d8bef9SDimitry Andric SDValue LowerFixedLengthVectorSelectToSVE(SDValue Op, SelectionDAG &DAG) const; 1005e8d8bef9SDimitry Andric SDValue LowerFixedLengthVectorSetccToSVE(SDValue Op, SelectionDAG &DAG) const; 10065ffd83dbSDimitry Andric SDValue LowerFixedLengthVectorStoreToSVE(SDValue Op, SelectionDAG &DAG) const; 1007fe6060f1SDimitry Andric SDValue LowerFixedLengthVectorMStoreToSVE(SDValue Op, 1008fe6060f1SDimitry Andric SelectionDAG &DAG) const; 10095ffd83dbSDimitry Andric SDValue LowerFixedLengthVectorTruncateToSVE(SDValue Op, 10105ffd83dbSDimitry Andric SelectionDAG &DAG) const; 1011fe6060f1SDimitry Andric SDValue LowerFixedLengthExtractVectorElt(SDValue Op, SelectionDAG &DAG) const; 1012fe6060f1SDimitry Andric SDValue LowerFixedLengthInsertVectorElt(SDValue Op, SelectionDAG &DAG) const; 1013fe6060f1SDimitry Andric SDValue LowerFixedLengthBitcastToSVE(SDValue Op, SelectionDAG &DAG) const; 1014fe6060f1SDimitry Andric SDValue LowerFixedLengthConcatVectorsToSVE(SDValue Op, 1015fe6060f1SDimitry Andric SelectionDAG &DAG) const; 1016fe6060f1SDimitry Andric SDValue LowerFixedLengthFPExtendToSVE(SDValue Op, SelectionDAG &DAG) const; 1017fe6060f1SDimitry Andric SDValue LowerFixedLengthFPRoundToSVE(SDValue Op, SelectionDAG &DAG) const; 1018fe6060f1SDimitry Andric SDValue LowerFixedLengthIntToFPToSVE(SDValue Op, SelectionDAG &DAG) const; 1019fe6060f1SDimitry Andric SDValue LowerFixedLengthFPToIntToSVE(SDValue Op, SelectionDAG &DAG) const; 1020fe6060f1SDimitry Andric SDValue LowerFixedLengthVECTOR_SHUFFLEToSVE(SDValue Op, 1021fe6060f1SDimitry Andric SelectionDAG &DAG) const; 10220b57cec5SDimitry Andric 10230b57cec5SDimitry Andric SDValue BuildSDIVPow2(SDNode *N, const APInt &Divisor, SelectionDAG &DAG, 10240b57cec5SDimitry Andric SmallVectorImpl<SDNode *> &Created) const override; 10250b57cec5SDimitry Andric SDValue getSqrtEstimate(SDValue Operand, SelectionDAG &DAG, int Enabled, 10260b57cec5SDimitry Andric int &ExtraSteps, bool &UseOneConst, 10270b57cec5SDimitry Andric bool Reciprocal) const override; 10280b57cec5SDimitry Andric SDValue getRecipEstimate(SDValue Operand, SelectionDAG &DAG, int Enabled, 10290b57cec5SDimitry Andric int &ExtraSteps) const override; 1030e8d8bef9SDimitry Andric SDValue getSqrtInputTest(SDValue Operand, SelectionDAG &DAG, 1031e8d8bef9SDimitry Andric const DenormalMode &Mode) const override; 1032e8d8bef9SDimitry Andric SDValue getSqrtResultForDenormInput(SDValue Operand, 1033e8d8bef9SDimitry Andric SelectionDAG &DAG) const override; 10340b57cec5SDimitry Andric unsigned combineRepeatedFPDivisors() const override; 10350b57cec5SDimitry Andric 10360b57cec5SDimitry Andric ConstraintType getConstraintType(StringRef Constraint) const override; 1037480093f4SDimitry Andric Register getRegisterByName(const char* RegName, LLT VT, 10388bcb0991SDimitry Andric const MachineFunction &MF) const override; 10390b57cec5SDimitry Andric 10400b57cec5SDimitry Andric /// Examine constraint string and operand type and determine a weight value. 10410b57cec5SDimitry Andric /// The operand object must already have been set up with the operand type. 10420b57cec5SDimitry Andric ConstraintWeight 10430b57cec5SDimitry Andric getSingleConstraintMatchWeight(AsmOperandInfo &info, 10440b57cec5SDimitry Andric const char *constraint) const override; 10450b57cec5SDimitry Andric 10460b57cec5SDimitry Andric std::pair<unsigned, const TargetRegisterClass *> 10470b57cec5SDimitry Andric getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI, 10480b57cec5SDimitry Andric StringRef Constraint, MVT VT) const override; 10490b57cec5SDimitry Andric 10500b57cec5SDimitry Andric const char *LowerXConstraint(EVT ConstraintVT) const override; 10510b57cec5SDimitry Andric 10520b57cec5SDimitry Andric void LowerAsmOperandForConstraint(SDValue Op, std::string &Constraint, 10530b57cec5SDimitry Andric std::vector<SDValue> &Ops, 10540b57cec5SDimitry Andric SelectionDAG &DAG) const override; 10550b57cec5SDimitry Andric 10560b57cec5SDimitry Andric unsigned getInlineAsmMemConstraint(StringRef ConstraintCode) const override { 10570b57cec5SDimitry Andric if (ConstraintCode == "Q") 10580b57cec5SDimitry Andric return InlineAsm::Constraint_Q; 10590b57cec5SDimitry Andric // FIXME: clang has code for 'Ump', 'Utf', 'Usa', and 'Ush' but these are 10600b57cec5SDimitry Andric // followed by llvm_unreachable so we'll leave them unimplemented in 10610b57cec5SDimitry Andric // the backend for now. 10620b57cec5SDimitry Andric return TargetLowering::getInlineAsmMemConstraint(ConstraintCode); 10630b57cec5SDimitry Andric } 10640b57cec5SDimitry Andric 1065fe6060f1SDimitry Andric bool shouldExtendGSIndex(EVT VT, EVT &EltTy) const override; 1066e8d8bef9SDimitry Andric bool shouldRemoveExtendFromGSIndex(EVT VT) const override; 1067480093f4SDimitry Andric bool isVectorLoadExtDesirable(SDValue ExtVal) const override; 10680b57cec5SDimitry Andric bool isUsedByReturnOnly(SDNode *N, SDValue &Chain) const override; 10690b57cec5SDimitry Andric bool mayBeEmittedAsTailCall(const CallInst *CI) const override; 10700b57cec5SDimitry Andric bool getIndexedAddressParts(SDNode *Op, SDValue &Base, SDValue &Offset, 10710b57cec5SDimitry Andric ISD::MemIndexedMode &AM, bool &IsInc, 10720b57cec5SDimitry Andric SelectionDAG &DAG) const; 10730b57cec5SDimitry Andric bool getPreIndexedAddressParts(SDNode *N, SDValue &Base, SDValue &Offset, 10740b57cec5SDimitry Andric ISD::MemIndexedMode &AM, 10750b57cec5SDimitry Andric SelectionDAG &DAG) const override; 10760b57cec5SDimitry Andric bool getPostIndexedAddressParts(SDNode *N, SDNode *Op, SDValue &Base, 10770b57cec5SDimitry Andric SDValue &Offset, ISD::MemIndexedMode &AM, 10780b57cec5SDimitry Andric SelectionDAG &DAG) const override; 10790b57cec5SDimitry Andric 10800b57cec5SDimitry Andric void ReplaceNodeResults(SDNode *N, SmallVectorImpl<SDValue> &Results, 10810b57cec5SDimitry Andric SelectionDAG &DAG) const override; 1082fe6060f1SDimitry Andric void ReplaceBITCASTResults(SDNode *N, SmallVectorImpl<SDValue> &Results, 1083fe6060f1SDimitry Andric SelectionDAG &DAG) const; 10845ffd83dbSDimitry Andric void ReplaceExtractSubVectorResults(SDNode *N, 10855ffd83dbSDimitry Andric SmallVectorImpl<SDValue> &Results, 10865ffd83dbSDimitry Andric SelectionDAG &DAG) const; 10870b57cec5SDimitry Andric 10880b57cec5SDimitry Andric bool shouldNormalizeToSelectSequence(LLVMContext &, EVT) const override; 10890b57cec5SDimitry Andric 10900b57cec5SDimitry Andric void finalizeLowering(MachineFunction &MF) const override; 10915ffd83dbSDimitry Andric 10925ffd83dbSDimitry Andric bool shouldLocalize(const MachineInstr &MI, 10935ffd83dbSDimitry Andric const TargetTransformInfo *TTI) const override; 10945ffd83dbSDimitry Andric 1095fe6060f1SDimitry Andric bool SimplifyDemandedBitsForTargetNode(SDValue Op, 1096fe6060f1SDimitry Andric const APInt &OriginalDemandedBits, 1097fe6060f1SDimitry Andric const APInt &OriginalDemandedElts, 1098fe6060f1SDimitry Andric KnownBits &Known, 1099fe6060f1SDimitry Andric TargetLoweringOpt &TLO, 1100fe6060f1SDimitry Andric unsigned Depth) const override; 1101fe6060f1SDimitry Andric 1102e8d8bef9SDimitry Andric // Normally SVE is only used for byte size vectors that do not fit within a 1103e8d8bef9SDimitry Andric // NEON vector. This changes when OverrideNEON is true, allowing SVE to be 1104e8d8bef9SDimitry Andric // used for 64bit and 128bit vectors as well. 1105e8d8bef9SDimitry Andric bool useSVEForFixedLengthVectorVT(EVT VT, bool OverrideNEON = false) const; 1106e8d8bef9SDimitry Andric 1107e8d8bef9SDimitry Andric // With the exception of data-predicate transitions, no instructions are 1108e8d8bef9SDimitry Andric // required to cast between legal scalable vector types. However: 1109e8d8bef9SDimitry Andric // 1. Packed and unpacked types have different bit lengths, meaning BITCAST 1110e8d8bef9SDimitry Andric // is not universally useable. 1111e8d8bef9SDimitry Andric // 2. Most unpacked integer types are not legal and thus integer extends 1112e8d8bef9SDimitry Andric // cannot be used to convert between unpacked and packed types. 1113e8d8bef9SDimitry Andric // These can make "bitcasting" a multiphase process. REINTERPRET_CAST is used 1114e8d8bef9SDimitry Andric // to transition between unpacked and packed types of the same element type, 1115e8d8bef9SDimitry Andric // with BITCAST used otherwise. 1116e8d8bef9SDimitry Andric SDValue getSVESafeBitCast(EVT VT, SDValue Op, SelectionDAG &DAG) const; 1117fe6060f1SDimitry Andric 1118fe6060f1SDimitry Andric bool isConstantUnsignedBitfieldExtactLegal(unsigned Opc, LLT Ty1, 1119fe6060f1SDimitry Andric LLT Ty2) const override; 11200b57cec5SDimitry Andric }; 11210b57cec5SDimitry Andric 11220b57cec5SDimitry Andric namespace AArch64 { 11230b57cec5SDimitry Andric FastISel *createFastISel(FunctionLoweringInfo &funcInfo, 11240b57cec5SDimitry Andric const TargetLibraryInfo *libInfo); 11250b57cec5SDimitry Andric } // end namespace AArch64 11260b57cec5SDimitry Andric 11270b57cec5SDimitry Andric } // end namespace llvm 11280b57cec5SDimitry Andric 11290b57cec5SDimitry Andric #endif 1130