//===-- ARM.td - Describe the ARM Target Machine -----------*- tablegen -*-===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // //===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===// // Target-independent interfaces which we are implementing //===----------------------------------------------------------------------===// include "llvm/Target/Target.td" //===----------------------------------------------------------------------===// // ARM Subtarget state. // def ModeThumb : SubtargetFeature<"thumb-mode", "InThumbMode", "true", "Thumb mode">; def ModeSoftFloat : SubtargetFeature<"soft-float","UseSoftFloat", "true", "Use software floating " "point features.">; //===----------------------------------------------------------------------===// // ARM Subtarget features. // // Floating Point, HW Division and Neon Support // FP loads/stores/moves, shared between VFP and MVE (even in the integer-only // version). def FeatureFPRegs : SubtargetFeature<"fpregs", "HasFPRegs", "true", "Enable FP registers">; // 16-bit FP loads/stores/moves, shared between VFP (with the v8.2A FP16 // extension) and MVE (even in the integer-only version). def FeatureFPRegs16 : SubtargetFeature<"fpregs16", "HasFPRegs16", "true", "Enable 16-bit FP registers", [FeatureFPRegs]>; def FeatureFPRegs64 : SubtargetFeature<"fpregs64", "HasFPRegs64", "true", "Enable 64-bit FP registers", [FeatureFPRegs]>; def FeatureFP64 : SubtargetFeature<"fp64", "HasFP64", "true", "Floating point unit supports " "double precision", [FeatureFPRegs64]>; def FeatureD32 : SubtargetFeature<"d32", "HasD32", "true", "Extend FP to 32 double registers">; multiclass VFPver prev, list otherimplies, list vfp2prev = []> { def _D16_SP: SubtargetFeature< name#"d16sp", query#"D16SP", "true", description#" with only 16 d-registers and no double precision", !foreach(v, prev, !cast(v # "_D16_SP")) # !foreach(v, vfp2prev, !cast(v # "_SP")) # otherimplies>; def _SP: SubtargetFeature< name#"sp", query#"SP", "true", description#" with no double precision", !foreach(v, prev, !cast(v # "_SP")) # otherimplies # [FeatureD32, !cast(NAME # "_D16_SP")]>; def _D16: SubtargetFeature< name#"d16", query#"D16", "true", description#" with only 16 d-registers", !foreach(v, prev, !cast(v # "_D16")) # vfp2prev # otherimplies # [FeatureFP64, !cast(NAME # "_D16_SP")]>; def "": SubtargetFeature< name, query, "true", description, prev # otherimplies # [ !cast(NAME # "_D16"), !cast(NAME # "_SP")]>; } def FeatureVFP2_SP : SubtargetFeature<"vfp2sp", "HasVFPv2SP", "true", "Enable VFP2 instructions with " "no double precision", [FeatureFPRegs]>; def FeatureVFP2 : SubtargetFeature<"vfp2", "HasVFPv2", "true", "Enable VFP2 instructions", [FeatureFP64, FeatureVFP2_SP]>; defm FeatureVFP3: VFPver<"vfp3", "HasVFPv3", "Enable VFP3 instructions", [], [], [FeatureVFP2]>; def FeatureNEON : SubtargetFeature<"neon", "HasNEON", "true", "Enable NEON instructions", [FeatureVFP3]>; def FeatureFP16 : SubtargetFeature<"fp16", "HasFP16", "true", "Enable half-precision " "floating point">; defm FeatureVFP4: VFPver<"vfp4", "HasVFPv4", "Enable VFP4 instructions", [FeatureVFP3], [FeatureFP16]>; defm FeatureFPARMv8: VFPver<"fp-armv8", "HasFPARMv8", "Enable ARMv8 FP", [FeatureVFP4], []>; def FeatureFullFP16 : SubtargetFeature<"fullfp16", "HasFullFP16", "true", "Enable full half-precision " "floating point", [FeatureFPARMv8_D16_SP, FeatureFPRegs16]>; def FeatureFP16FML : SubtargetFeature<"fp16fml", "HasFP16FML", "true", "Enable full half-precision " "floating point fml instructions", [FeatureFullFP16]>; def FeatureHWDivThumb : SubtargetFeature<"hwdiv", "HasHardwareDivideInThumb", "true", "Enable divide instructions in Thumb">; def FeatureHWDivARM : SubtargetFeature<"hwdiv-arm", "HasHardwareDivideInARM", "true", "Enable divide instructions in ARM mode">; // Atomic Support def FeatureDB : SubtargetFeature<"db", "HasDataBarrier", "true", "Has data barrier (dmb/dsb) instructions">; def FeatureV7Clrex : SubtargetFeature<"v7clrex", "HasV7Clrex", "true", "Has v7 clrex instruction">; def FeatureDFB : SubtargetFeature<"dfb", "HasFullDataBarrier", "true", "Has full data barrier (dfb) instruction">; def FeatureAcquireRelease : SubtargetFeature<"acquire-release", "HasAcquireRelease", "true", "Has v8 acquire/release (lda/ldaex " " etc) instructions">; def FeatureSlowFPBrcc : SubtargetFeature<"slow-fp-brcc", "SlowFPBrcc", "true", "FP compare + branch is slow">; def FeaturePerfMon : SubtargetFeature<"perfmon", "HasPerfMon", "true", "Enable support for Performance " "Monitor extensions">; // TrustZone Security Extensions def FeatureTrustZone : SubtargetFeature<"trustzone", "HasTrustZone", "true", "Enable support for TrustZone " "security extensions">; def Feature8MSecExt : SubtargetFeature<"8msecext", "Has8MSecExt", "true", "Enable support for ARMv8-M " "Security Extensions">; def FeatureSHA2 : SubtargetFeature<"sha2", "HasSHA2", "true", "Enable SHA1 and SHA256 support", [FeatureNEON]>; def FeatureAES : SubtargetFeature<"aes", "HasAES", "true", "Enable AES support", [FeatureNEON]>; def FeatureCrypto : SubtargetFeature<"crypto", "HasCrypto", "true", "Enable support for " "Cryptography extensions", [FeatureNEON, FeatureSHA2, FeatureAES]>; def FeatureCRC : SubtargetFeature<"crc", "HasCRC", "true", "Enable support for CRC instructions">; def FeatureDotProd : SubtargetFeature<"dotprod", "HasDotProd", "true", "Enable support for dot product instructions", [FeatureNEON]>; // Not to be confused with FeatureHasRetAddrStack (return address stack) def FeatureRAS : SubtargetFeature<"ras", "HasRAS", "true", "Enable Reliability, Availability " "and Serviceability extensions">; // Fast computation of non-negative address offsets def FeatureFPAO : SubtargetFeature<"fpao", "HasFPAO", "true", "Enable fast computation of " "positive address offsets">; // Fast execution of AES crypto operations def FeatureFuseAES : SubtargetFeature<"fuse-aes", "HasFuseAES", "true", "CPU fuses AES crypto operations">; // Fast execution of bottom and top halves of literal generation def FeatureFuseLiterals : SubtargetFeature<"fuse-literals", "HasFuseLiterals", "true", "CPU fuses literal generation operations">; // The way of reading thread pointer def FeatureReadTp : SubtargetFeature<"read-tp-hard", "ReadTPHard", "true", "Reading thread pointer from register">; // Cyclone can zero VFP registers in 0 cycles. def FeatureZCZeroing : SubtargetFeature<"zcz", "HasZeroCycleZeroing", "true", "Has zero-cycle zeroing instructions">; // Whether it is profitable to unpredicate certain instructions during if-conversion def FeatureProfUnpredicate : SubtargetFeature<"prof-unpr", "IsProfitableToUnpredicate", "true", "Is profitable to unpredicate">; // Some targets (e.g. Swift) have microcoded VGETLNi32. def FeatureSlowVGETLNi32 : SubtargetFeature<"slow-vgetlni32", "HasSlowVGETLNi32", "true", "Has slow VGETLNi32 - prefer VMOV">; // Some targets (e.g. Swift) have microcoded VDUP32. def FeatureSlowVDUP32 : SubtargetFeature<"slow-vdup32", "HasSlowVDUP32", "true", "Has slow VDUP32 - prefer VMOV">; // Some targets (e.g. Cortex-A9) prefer VMOVSR to VMOVDRR even when using NEON // for scalar FP, as this allows more effective execution domain optimization. def FeaturePreferVMOVSR : SubtargetFeature<"prefer-vmovsr", "PreferVMOVSR", "true", "Prefer VMOVSR">; // Swift has ISHST barriers compatible with Atomic Release semantics but weaker // than ISH def FeaturePrefISHSTBarrier : SubtargetFeature<"prefer-ishst", "PreferISHST", "true", "Prefer ISHST barriers">; // Some targets (e.g. Cortex-A9) have muxed AGU and NEON/FPU. def FeatureMuxedUnits : SubtargetFeature<"muxed-units", "HasMuxedUnits", "true", "Has muxed AGU and NEON/FPU">; // Whether VLDM/VSTM starting with odd register number need more microops // than single VLDRS def FeatureSlowOddRegister : SubtargetFeature<"slow-odd-reg", "SlowOddRegister", "true", "VLDM/VSTM starting " "with an odd register is slow">; // Some targets have a renaming dependency when loading into D subregisters. def FeatureSlowLoadDSubreg : SubtargetFeature<"slow-load-D-subreg", "SlowLoadDSubregister", "true", "Loading into D subregs is slow">; def FeatureUseWideStrideVFP : SubtargetFeature<"wide-stride-vfp", "UseWideStrideVFP", "true", "Use a wide stride when allocating VFP registers">; // Some targets (e.g. Cortex-A15) never want VMOVS to be widened to VMOVD. def FeatureDontWidenVMOVS : SubtargetFeature<"dont-widen-vmovs", "DontWidenVMOVS", "true", "Don't widen VMOVS to VMOVD">; // Some targets (e.g. Cortex-A15) prefer to avoid mixing operations on different // VFP register widths. def FeatureSplatVFPToNeon : SubtargetFeature<"splat-vfp-neon", "SplatVFPToNeon", "true", "Splat register from VFP to NEON", [FeatureDontWidenVMOVS]>; // Whether or not it is profitable to expand VFP/NEON MLA/MLS instructions. def FeatureExpandMLx : SubtargetFeature<"expand-fp-mlx", "ExpandMLx", "true", "Expand VFP/NEON MLA/MLS instructions">; // Some targets have special RAW hazards for VFP/NEON VMLA/VMLS. def FeatureHasVMLxHazards : SubtargetFeature<"vmlx-hazards", "HasVMLxHazards", "true", "Has VMLx hazards">; // Some targets (e.g. Cortex-A9) want to convert VMOVRS, VMOVSR and VMOVS from // VFP to NEON, as an execution domain optimization. def FeatureNEONForFPMovs : SubtargetFeature<"neon-fpmovs", "UseNEONForFPMovs", "true", "Convert VMOVSR, VMOVRS, " "VMOVS to NEON">; // Some processors benefit from using NEON instructions for scalar // single-precision FP operations. This affects instruction selection and should // only be enabled if the handling of denormals is not important. def FeatureNEONForFP : SubtargetFeature<"neonfp", "UseNEONForSinglePrecisionFP", "true", "Use NEON for single precision FP">; // On some processors, VLDn instructions that access unaligned data take one // extra cycle. Take that into account when computing operand latencies. def FeatureCheckVLDnAlign : SubtargetFeature<"vldn-align", "CheckVLDnAlign", "true", "Check for VLDn unaligned access">; // Some processors have a nonpipelined VFP coprocessor. def FeatureNonpipelinedVFP : SubtargetFeature<"nonpipelined-vfp", "NonpipelinedVFP", "true", "VFP instructions are not pipelined">; // Some processors have FP multiply-accumulate instructions that don't // play nicely with other VFP / NEON instructions, and it's generally better // to just not use them. def FeatureHasSlowFPVMLx : SubtargetFeature<"slowfpvmlx", "SlowFPVMLx", "true", "Disable VFP / NEON MAC instructions">; // VFPv4 added VFMA instructions that can similar be fast or slow. def FeatureHasSlowFPVFMx : SubtargetFeature<"slowfpvfmx", "SlowFPVFMx", "true", "Disable VFP / NEON FMA instructions">; // Cortex-A8 / A9 Advanced SIMD has multiplier accumulator forwarding. def FeatureVMLxForwarding : SubtargetFeature<"vmlx-forwarding", "HasVMLxForwarding", "true", "Has multiplier accumulator forwarding">; // Disable 32-bit to 16-bit narrowing for experimentation. def FeaturePref32BitThumb : SubtargetFeature<"32bit", "Pref32BitThumb", "true", "Prefer 32-bit Thumb instrs">; def FeaturePrefLoopAlign32 : SubtargetFeature<"loop-align", "PrefLoopLogAlignment","2", "Prefer 32-bit alignment for loops">; def FeatureMVEVectorCostFactor1 : SubtargetFeature<"mve1beat", "MVEVectorCostFactor", "1", "Model MVE instructions as a 1 beat per tick architecture">; def FeatureMVEVectorCostFactor2 : SubtargetFeature<"mve2beat", "MVEVectorCostFactor", "2", "Model MVE instructions as a 2 beats per tick architecture">; def FeatureMVEVectorCostFactor4 : SubtargetFeature<"mve4beat", "MVEVectorCostFactor", "4", "Model MVE instructions as a 4 beats per tick architecture">; /// Some instructions update CPSR partially, which can add false dependency for /// out-of-order implementation, e.g. Cortex-A9, unless each individual bit is /// mapped to a separate physical register. Avoid partial CPSR update for these /// processors. def FeatureAvoidPartialCPSR : SubtargetFeature<"avoid-partial-cpsr", "AvoidCPSRPartialUpdate", "true", "Avoid CPSR partial update for OOO execution">; /// Disable +1 predication cost for instructions updating CPSR. /// Enabled for Cortex-A57. def FeatureCheapPredicableCPSR : SubtargetFeature<"cheap-predicable-cpsr", "CheapPredicableCPSRDef", "true", "Disable +1 predication cost for instructions updating CPSR">; def FeatureAvoidMOVsShOp : SubtargetFeature<"avoid-movs-shop", "AvoidMOVsShifterOperand", "true", "Avoid movs instructions with " "shifter operand">; // Some processors perform return stack prediction. CodeGen should avoid issue // "normal" call instructions to callees which do not return. def FeatureHasRetAddrStack : SubtargetFeature<"ret-addr-stack", "HasRetAddrStack", "true", "Has return address stack">; // Some processors have no branch predictor, which changes the expected cost of // taking a branch which affects the choice of whether to use predicated // instructions. def FeatureHasNoBranchPredictor : SubtargetFeature<"no-branch-predictor", "HasBranchPredictor", "false", "Has no branch predictor">; /// DSP extension. def FeatureDSP : SubtargetFeature<"dsp", "HasDSP", "true", "Supports DSP instructions in " "ARM and/or Thumb2">; // Multiprocessing extension. def FeatureMP : SubtargetFeature<"mp", "HasMPExtension", "true", "Supports Multiprocessing extension">; // Virtualization extension - requires HW divide (ARMv7-AR ARMARM - 4.4.8). def FeatureVirtualization : SubtargetFeature<"virtualization", "HasVirtualization", "true", "Supports Virtualization extension", [FeatureHWDivThumb, FeatureHWDivARM]>; // Special TRAP encoding for NaCl, which looks like a TRAP in Thumb too. // See ARMInstrInfo.td for details. def FeatureNaClTrap : SubtargetFeature<"nacl-trap", "UseNaClTrap", "true", "NaCl trap">; def FeatureStrictAlign : SubtargetFeature<"strict-align", "StrictAlign", "true", "Disallow all unaligned memory " "access">; def FeatureLongCalls : SubtargetFeature<"long-calls", "GenLongCalls", "true", "Generate calls via indirect call " "instructions">; def FeatureExecuteOnly : SubtargetFeature<"execute-only", "GenExecuteOnly", "true", "Enable the generation of " "execute only code.">; def FeatureReserveR9 : SubtargetFeature<"reserve-r9", "ReserveR9", "true", "Reserve R9, making it unavailable" " as GPR">; def FeatureNoMovt : SubtargetFeature<"no-movt", "NoMovt", "true", "Don't use movt/movw pairs for " "32-bit imms">; def FeatureNoNegativeImmediates : SubtargetFeature<"no-neg-immediates", "NegativeImmediates", "false", "Convert immediates and instructions " "to their negated or complemented " "equivalent when the immediate does " "not fit in the encoding.">; // Use the MachineScheduler for instruction scheduling for the subtarget. def FeatureUseMISched: SubtargetFeature<"use-misched", "UseMISched", "true", "Use the MachineScheduler">; def FeatureNoPostRASched : SubtargetFeature<"disable-postra-scheduler", "DisablePostRAScheduler", "true", "Don't schedule again after register allocation">; // Armv8.5-A extensions def FeatureSB : SubtargetFeature<"sb", "HasSB", "true", "Enable v8.5a Speculation Barrier" >; // Armv8.6-A extensions def FeatureBF16 : SubtargetFeature<"bf16", "HasBF16", "true", "Enable support for BFloat16 instructions", [FeatureNEON]>; def FeatureMatMulInt8 : SubtargetFeature<"i8mm", "HasMatMulInt8", "true", "Enable Matrix Multiply Int8 Extension", [FeatureNEON]>; // Armv8.1-M extensions def FeatureLOB : SubtargetFeature<"lob", "HasLOB", "true", "Enable Low Overhead Branch " "extensions">; //===----------------------------------------------------------------------===// // ARM architecture class // // A-series ISA def FeatureAClass : SubtargetFeature<"aclass", "ARMProcClass", "AClass", "Is application profile ('A' series)">; // R-series ISA def FeatureRClass : SubtargetFeature<"rclass", "ARMProcClass", "RClass", "Is realtime profile ('R' series)">; // M-series ISA def FeatureMClass : SubtargetFeature<"mclass", "ARMProcClass", "MClass", "Is microcontroller profile ('M' series)">; def FeatureThumb2 : SubtargetFeature<"thumb2", "HasThumb2", "true", "Enable Thumb2 instructions">; def FeatureNoARM : SubtargetFeature<"noarm", "NoARM", "true", "Does not support ARM mode execution">; //===----------------------------------------------------------------------===// // ARM ISAa. // def HasV4TOps : SubtargetFeature<"v4t", "HasV4TOps", "true", "Support ARM v4T instructions">; def HasV5TOps : SubtargetFeature<"v5t", "HasV5TOps", "true", "Support ARM v5T instructions", [HasV4TOps]>; def HasV5TEOps : SubtargetFeature<"v5te", "HasV5TEOps", "true", "Support ARM v5TE, v5TEj, and " "v5TExp instructions", [HasV5TOps]>; def HasV6Ops : SubtargetFeature<"v6", "HasV6Ops", "true", "Support ARM v6 instructions", [HasV5TEOps]>; def HasV6MOps : SubtargetFeature<"v6m", "HasV6MOps", "true", "Support ARM v6M instructions", [HasV6Ops]>; def HasV8MBaselineOps : SubtargetFeature<"v8m", "HasV8MBaselineOps", "true", "Support ARM v8M Baseline instructions", [HasV6MOps]>; def HasV6KOps : SubtargetFeature<"v6k", "HasV6KOps", "true", "Support ARM v6k instructions", [HasV6Ops]>; def HasV6T2Ops : SubtargetFeature<"v6t2", "HasV6T2Ops", "true", "Support ARM v6t2 instructions", [HasV8MBaselineOps, HasV6KOps, FeatureThumb2]>; def HasV7Ops : SubtargetFeature<"v7", "HasV7Ops", "true", "Support ARM v7 instructions", [HasV6T2Ops, FeaturePerfMon, FeatureV7Clrex]>; def HasV8MMainlineOps : SubtargetFeature<"v8m.main", "HasV8MMainlineOps", "true", "Support ARM v8M Mainline instructions", [HasV7Ops]>; def HasV8Ops : SubtargetFeature<"v8", "HasV8Ops", "true", "Support ARM v8 instructions", [HasV7Ops, FeatureAcquireRelease]>; def HasV8_1aOps : SubtargetFeature<"v8.1a", "HasV8_1aOps", "true", "Support ARM v8.1a instructions", [HasV8Ops]>; def HasV8_2aOps : SubtargetFeature<"v8.2a", "HasV8_2aOps", "true", "Support ARM v8.2a instructions", [HasV8_1aOps]>; def HasV8_3aOps : SubtargetFeature<"v8.3a", "HasV8_3aOps", "true", "Support ARM v8.3a instructions", [HasV8_2aOps]>; def HasV8_4aOps : SubtargetFeature<"v8.4a", "HasV8_4aOps", "true", "Support ARM v8.4a instructions", [HasV8_3aOps, FeatureDotProd]>; def HasV8_5aOps : SubtargetFeature<"v8.5a", "HasV8_5aOps", "true", "Support ARM v8.5a instructions", [HasV8_4aOps, FeatureSB]>; def HasV8_6aOps : SubtargetFeature<"v8.6a", "HasV8_6aOps", "true", "Support ARM v8.6a instructions", [HasV8_5aOps, FeatureBF16, FeatureMatMulInt8]>; def HasV8_1MMainlineOps : SubtargetFeature< "v8.1m.main", "HasV8_1MMainlineOps", "true", "Support ARM v8-1M Mainline instructions", [HasV8MMainlineOps]>; def HasMVEIntegerOps : SubtargetFeature< "mve", "HasMVEIntegerOps", "true", "Support M-Class Vector Extension with integer ops", [HasV8_1MMainlineOps, FeatureDSP, FeatureFPRegs16, FeatureFPRegs64]>; def HasMVEFloatOps : SubtargetFeature< "mve.fp", "HasMVEFloatOps", "true", "Support M-Class Vector Extension with integer and floating ops", [HasMVEIntegerOps, FeatureFPARMv8_D16_SP, FeatureFullFP16]>; def HasCDEOps : SubtargetFeature<"cde", "HasCDEOps", "true", "Support CDE instructions", [HasV8MMainlineOps]>; foreach i = {0-7} in def FeatureCoprocCDE#i : SubtargetFeature<"cdecp"#i, "CoprocCDE["#i#"]", "true", "Coprocessor "#i#" ISA is CDEv1", [HasCDEOps]>; //===----------------------------------------------------------------------===// // ARM Processor subtarget features. // def ProcA5 : SubtargetFeature<"a5", "ARMProcFamily", "CortexA5", "Cortex-A5 ARM processors", []>; def ProcA7 : SubtargetFeature<"a7", "ARMProcFamily", "CortexA7", "Cortex-A7 ARM processors", []>; def ProcA8 : SubtargetFeature<"a8", "ARMProcFamily", "CortexA8", "Cortex-A8 ARM processors", []>; def ProcA9 : SubtargetFeature<"a9", "ARMProcFamily", "CortexA9", "Cortex-A9 ARM processors", []>; def ProcA12 : SubtargetFeature<"a12", "ARMProcFamily", "CortexA12", "Cortex-A12 ARM processors", []>; def ProcA15 : SubtargetFeature<"a15", "ARMProcFamily", "CortexA15", "Cortex-A15 ARM processors", []>; def ProcA17 : SubtargetFeature<"a17", "ARMProcFamily", "CortexA17", "Cortex-A17 ARM processors", []>; def ProcA32 : SubtargetFeature<"a32", "ARMProcFamily", "CortexA32", "Cortex-A32 ARM processors", []>; def ProcA35 : SubtargetFeature<"a35", "ARMProcFamily", "CortexA35", "Cortex-A35 ARM processors", []>; def ProcA53 : SubtargetFeature<"a53", "ARMProcFamily", "CortexA53", "Cortex-A53 ARM processors", []>; def ProcA55 : SubtargetFeature<"a55", "ARMProcFamily", "CortexA55", "Cortex-A55 ARM processors", []>; def ProcA57 : SubtargetFeature<"a57", "ARMProcFamily", "CortexA57", "Cortex-A57 ARM processors", []>; def ProcA72 : SubtargetFeature<"a72", "ARMProcFamily", "CortexA72", "Cortex-A72 ARM processors", []>; def ProcA73 : SubtargetFeature<"a73", "ARMProcFamily", "CortexA73", "Cortex-A73 ARM processors", []>; def ProcA75 : SubtargetFeature<"a75", "ARMProcFamily", "CortexA75", "Cortex-A75 ARM processors", []>; def ProcA76 : SubtargetFeature<"a76", "ARMProcFamily", "CortexA76", "Cortex-A76 ARM processors", []>; def ProcA77 : SubtargetFeature<"a77", "ARMProcFamily", "CortexA77", "Cortex-A77 ARM processors", []>; def ProcA78 : SubtargetFeature<"cortex-a78", "ARMProcFamily", "CortexA78", "Cortex-A78 ARM processors", []>; def ProcX1 : SubtargetFeature<"cortex-x1", "ARMProcFamily", "CortexX1", "Cortex-X1 ARM processors", []>; def ProcKrait : SubtargetFeature<"krait", "ARMProcFamily", "Krait", "Qualcomm Krait processors", []>; def ProcKryo : SubtargetFeature<"kryo", "ARMProcFamily", "Kryo", "Qualcomm Kryo processors", []>; def ProcSwift : SubtargetFeature<"swift", "ARMProcFamily", "Swift", "Swift ARM processors", []>; def ProcExynos : SubtargetFeature<"exynos", "ARMProcFamily", "Exynos", "Samsung Exynos processors", [FeatureZCZeroing, FeatureUseWideStrideVFP, FeatureSplatVFPToNeon, FeatureSlowVGETLNi32, FeatureSlowVDUP32, FeatureSlowFPBrcc, FeatureProfUnpredicate, FeatureHWDivThumb, FeatureHWDivARM, FeatureHasSlowFPVMLx, FeatureHasSlowFPVFMx, FeatureHasRetAddrStack, FeatureFuseLiterals, FeatureFuseAES, FeatureExpandMLx, FeatureCrypto, FeatureCRC]>; def ProcR4 : SubtargetFeature<"r4", "ARMProcFamily", "CortexR4", "Cortex-R4 ARM processors", []>; def ProcR5 : SubtargetFeature<"r5", "ARMProcFamily", "CortexR5", "Cortex-R5 ARM processors", []>; def ProcR7 : SubtargetFeature<"r7", "ARMProcFamily", "CortexR7", "Cortex-R7 ARM processors", []>; def ProcR52 : SubtargetFeature<"r52", "ARMProcFamily", "CortexR52", "Cortex-R52 ARM processors", []>; def ProcM3 : SubtargetFeature<"m3", "ARMProcFamily", "CortexM3", "Cortex-M3 ARM processors", []>; //===----------------------------------------------------------------------===// // ARM Helper classes. // class Architecture features> : SubtargetFeature; class ProcNoItin Features> : Processor; //===----------------------------------------------------------------------===// // ARM architectures // def ARMv2 : Architecture<"armv2", "ARMv2", []>; def ARMv2a : Architecture<"armv2a", "ARMv2a", []>; def ARMv3 : Architecture<"armv3", "ARMv3", []>; def ARMv3m : Architecture<"armv3m", "ARMv3m", []>; def ARMv4 : Architecture<"armv4", "ARMv4", []>; def ARMv4t : Architecture<"armv4t", "ARMv4t", [HasV4TOps]>; def ARMv5t : Architecture<"armv5t", "ARMv5t", [HasV5TOps]>; def ARMv5te : Architecture<"armv5te", "ARMv5te", [HasV5TEOps]>; def ARMv5tej : Architecture<"armv5tej", "ARMv5tej", [HasV5TEOps]>; def ARMv6 : Architecture<"armv6", "ARMv6", [HasV6Ops, FeatureDSP]>; def ARMv6t2 : Architecture<"armv6t2", "ARMv6t2", [HasV6T2Ops, FeatureDSP]>; def ARMv6k : Architecture<"armv6k", "ARMv6k", [HasV6KOps]>; def ARMv6kz : Architecture<"armv6kz", "ARMv6kz", [HasV6KOps, FeatureTrustZone]>; def ARMv6m : Architecture<"armv6-m", "ARMv6m", [HasV6MOps, FeatureNoARM, ModeThumb, FeatureDB, FeatureMClass, FeatureStrictAlign]>; def ARMv6sm : Architecture<"armv6s-m", "ARMv6sm", [HasV6MOps, FeatureNoARM, ModeThumb, FeatureDB, FeatureMClass, FeatureStrictAlign]>; def ARMv7a : Architecture<"armv7-a", "ARMv7a", [HasV7Ops, FeatureNEON, FeatureDB, FeatureDSP, FeatureAClass]>; def ARMv7ve : Architecture<"armv7ve", "ARMv7ve", [HasV7Ops, FeatureNEON, FeatureDB, FeatureDSP, FeatureTrustZone, FeatureMP, FeatureVirtualization, FeatureAClass]>; def ARMv7r : Architecture<"armv7-r", "ARMv7r", [HasV7Ops, FeatureDB, FeatureDSP, FeatureHWDivThumb, FeatureRClass]>; def ARMv7m : Architecture<"armv7-m", "ARMv7m", [HasV7Ops, FeatureThumb2, FeatureNoARM, ModeThumb, FeatureDB, FeatureHWDivThumb, FeatureMClass]>; def ARMv7em : Architecture<"armv7e-m", "ARMv7em", [HasV7Ops, FeatureThumb2, FeatureNoARM, ModeThumb, FeatureDB, FeatureHWDivThumb, FeatureMClass, FeatureDSP]>; def ARMv8a : Architecture<"armv8-a", "ARMv8a", [HasV8Ops, FeatureAClass, FeatureDB, FeatureFPARMv8, FeatureNEON, FeatureDSP, FeatureTrustZone, FeatureMP, FeatureVirtualization, FeatureCrypto, FeatureCRC]>; def ARMv81a : Architecture<"armv8.1-a", "ARMv81a", [HasV8_1aOps, FeatureAClass, FeatureDB, FeatureFPARMv8, FeatureNEON, FeatureDSP, FeatureTrustZone, FeatureMP, FeatureVirtualization, FeatureCrypto, FeatureCRC]>; def ARMv82a : Architecture<"armv8.2-a", "ARMv82a", [HasV8_2aOps, FeatureAClass, FeatureDB, FeatureFPARMv8, FeatureNEON, FeatureDSP, FeatureTrustZone, FeatureMP, FeatureVirtualization, FeatureCrypto, FeatureCRC, FeatureRAS]>; def ARMv83a : Architecture<"armv8.3-a", "ARMv83a", [HasV8_3aOps, FeatureAClass, FeatureDB, FeatureFPARMv8, FeatureNEON, FeatureDSP, FeatureTrustZone, FeatureMP, FeatureVirtualization, FeatureCrypto, FeatureCRC, FeatureRAS]>; def ARMv84a : Architecture<"armv8.4-a", "ARMv84a", [HasV8_4aOps, FeatureAClass, FeatureDB, FeatureFPARMv8, FeatureNEON, FeatureDSP, FeatureTrustZone, FeatureMP, FeatureVirtualization, FeatureCrypto, FeatureCRC, FeatureRAS, FeatureDotProd]>; def ARMv85a : Architecture<"armv8.5-a", "ARMv85a", [HasV8_5aOps, FeatureAClass, FeatureDB, FeatureFPARMv8, FeatureNEON, FeatureDSP, FeatureTrustZone, FeatureMP, FeatureVirtualization, FeatureCrypto, FeatureCRC, FeatureRAS, FeatureDotProd]>; def ARMv86a : Architecture<"armv8.6-a", "ARMv86a", [HasV8_6aOps, FeatureAClass, FeatureDB, FeatureFPARMv8, FeatureNEON, FeatureDSP, FeatureTrustZone, FeatureMP, FeatureVirtualization, FeatureCrypto, FeatureCRC, FeatureRAS, FeatureDotProd]>; def ARMv8r : Architecture<"armv8-r", "ARMv8r", [HasV8Ops, FeatureRClass, FeatureDB, FeatureDFB, FeatureDSP, FeatureCRC, FeatureMP, FeatureVirtualization, FeatureFPARMv8, FeatureNEON]>; def ARMv8mBaseline : Architecture<"armv8-m.base", "ARMv8mBaseline", [HasV8MBaselineOps, FeatureNoARM, ModeThumb, FeatureDB, FeatureHWDivThumb, FeatureV7Clrex, Feature8MSecExt, FeatureAcquireRelease, FeatureMClass, FeatureStrictAlign]>; def ARMv8mMainline : Architecture<"armv8-m.main", "ARMv8mMainline", [HasV8MMainlineOps, FeatureNoARM, ModeThumb, FeatureDB, FeatureHWDivThumb, Feature8MSecExt, FeatureAcquireRelease, FeatureMClass]>; def ARMv81mMainline : Architecture<"armv8.1-m.main", "ARMv81mMainline", [HasV8_1MMainlineOps, FeatureNoARM, ModeThumb, FeatureDB, FeatureHWDivThumb, Feature8MSecExt, FeatureAcquireRelease, FeatureMClass, FeatureRAS, FeatureLOB]>; // Aliases def IWMMXT : Architecture<"iwmmxt", "ARMv5te", [ARMv5te]>; def IWMMXT2 : Architecture<"iwmmxt2", "ARMv5te", [ARMv5te]>; def XScale : Architecture<"xscale", "ARMv5te", [ARMv5te]>; def ARMv6j : Architecture<"armv6j", "ARMv7a", [ARMv6]>; def ARMv7k : Architecture<"armv7k", "ARMv7a", [ARMv7a]>; def ARMv7s : Architecture<"armv7s", "ARMv7a", [ARMv7a]>; //===----------------------------------------------------------------------===// // ARM schedules. //===----------------------------------------------------------------------===// // include "ARMPredicates.td" include "ARMSchedule.td" //===----------------------------------------------------------------------===// // ARM processors // // Dummy CPU, used to target architectures def : ProcessorModel<"generic", CortexA8Model, []>; // FIXME: Several processors below are not using their own scheduler // model, but one of similar/previous processor. These should be fixed. def : ProcNoItin<"arm8", [ARMv4]>; def : ProcNoItin<"arm810", [ARMv4]>; def : ProcNoItin<"strongarm", [ARMv4]>; def : ProcNoItin<"strongarm110", [ARMv4]>; def : ProcNoItin<"strongarm1100", [ARMv4]>; def : ProcNoItin<"strongarm1110", [ARMv4]>; def : ProcNoItin<"arm7tdmi", [ARMv4t]>; def : ProcNoItin<"arm7tdmi-s", [ARMv4t]>; def : ProcNoItin<"arm710t", [ARMv4t]>; def : ProcNoItin<"arm720t", [ARMv4t]>; def : ProcNoItin<"arm9", [ARMv4t]>; def : ProcNoItin<"arm9tdmi", [ARMv4t]>; def : ProcNoItin<"arm920", [ARMv4t]>; def : ProcNoItin<"arm920t", [ARMv4t]>; def : ProcNoItin<"arm922t", [ARMv4t]>; def : ProcNoItin<"arm940t", [ARMv4t]>; def : ProcNoItin<"ep9312", [ARMv4t]>; def : ProcNoItin<"arm10tdmi", [ARMv5t]>; def : ProcNoItin<"arm1020t", [ARMv5t]>; def : ProcNoItin<"arm9e", [ARMv5te]>; def : ProcNoItin<"arm926ej-s", [ARMv5te]>; def : ProcNoItin<"arm946e-s", [ARMv5te]>; def : ProcNoItin<"arm966e-s", [ARMv5te]>; def : ProcNoItin<"arm968e-s", [ARMv5te]>; def : ProcNoItin<"arm10e", [ARMv5te]>; def : ProcNoItin<"arm1020e", [ARMv5te]>; def : ProcNoItin<"arm1022e", [ARMv5te]>; def : ProcNoItin<"xscale", [ARMv5te]>; def : ProcNoItin<"iwmmxt", [ARMv5te]>; def : Processor<"arm1136j-s", ARMV6Itineraries, [ARMv6]>; def : Processor<"arm1136jf-s", ARMV6Itineraries, [ARMv6, FeatureVFP2, FeatureHasSlowFPVMLx]>; def : Processor<"cortex-m0", ARMV6Itineraries, [ARMv6m]>; def : Processor<"cortex-m0plus", ARMV6Itineraries, [ARMv6m]>; def : Processor<"cortex-m1", ARMV6Itineraries, [ARMv6m]>; def : Processor<"sc000", ARMV6Itineraries, [ARMv6m]>; def : Processor<"arm1176j-s", ARMV6Itineraries, [ARMv6kz]>; def : Processor<"arm1176jz-s", ARMV6Itineraries, [ARMv6kz]>; def : Processor<"arm1176jzf-s", ARMV6Itineraries, [ARMv6kz, FeatureVFP2, FeatureHasSlowFPVMLx]>; def : Processor<"mpcorenovfp", ARMV6Itineraries, [ARMv6k]>; def : Processor<"mpcore", ARMV6Itineraries, [ARMv6k, FeatureVFP2, FeatureHasSlowFPVMLx]>; def : Processor<"arm1156t2-s", ARMV6Itineraries, [ARMv6t2]>; def : Processor<"arm1156t2f-s", ARMV6Itineraries, [ARMv6t2, FeatureVFP2, FeatureHasSlowFPVMLx]>; def : ProcessorModel<"cortex-a5", CortexA8Model, [ARMv7a, ProcA5, FeatureHasRetAddrStack, FeatureTrustZone, FeatureSlowFPBrcc, FeatureHasSlowFPVMLx, FeatureHasSlowFPVFMx, FeatureVMLxForwarding, FeatureMP, FeatureVFP4]>; def : ProcessorModel<"cortex-a7", CortexA8Model, [ARMv7a, ProcA7, FeatureHasRetAddrStack, FeatureTrustZone, FeatureSlowFPBrcc, FeatureHasVMLxHazards, FeatureHasSlowFPVMLx, FeatureHasSlowFPVFMx, FeatureVMLxForwarding, FeatureMP, FeatureVFP4, FeatureVirtualization]>; def : ProcessorModel<"cortex-a8", CortexA8Model, [ARMv7a, ProcA8, FeatureHasRetAddrStack, FeatureNonpipelinedVFP, FeatureTrustZone, FeatureSlowFPBrcc, FeatureHasVMLxHazards, FeatureHasSlowFPVMLx, FeatureHasSlowFPVFMx, FeatureVMLxForwarding]>; def : ProcessorModel<"cortex-a9", CortexA9Model, [ARMv7a, ProcA9, FeatureHasRetAddrStack, FeatureTrustZone, FeatureHasVMLxHazards, FeatureVMLxForwarding, FeatureFP16, FeatureAvoidPartialCPSR, FeatureExpandMLx, FeaturePreferVMOVSR, FeatureMuxedUnits, FeatureNEONForFPMovs, FeatureCheckVLDnAlign, FeatureMP]>; def : ProcessorModel<"cortex-a12", CortexA9Model, [ARMv7a, ProcA12, FeatureHasRetAddrStack, FeatureTrustZone, FeatureVMLxForwarding, FeatureVFP4, FeatureAvoidPartialCPSR, FeatureVirtualization, FeatureMP]>; def : ProcessorModel<"cortex-a15", CortexA9Model, [ARMv7a, ProcA15, FeatureDontWidenVMOVS, FeatureSplatVFPToNeon, FeatureHasRetAddrStack, FeatureMuxedUnits, FeatureTrustZone, FeatureVFP4, FeatureMP, FeatureCheckVLDnAlign, FeatureAvoidPartialCPSR, FeatureVirtualization]>; def : ProcessorModel<"cortex-a17", CortexA9Model, [ARMv7a, ProcA17, FeatureHasRetAddrStack, FeatureTrustZone, FeatureMP, FeatureVMLxForwarding, FeatureVFP4, FeatureAvoidPartialCPSR, FeatureVirtualization]>; // FIXME: krait has currently the same features as A9 plus VFP4 and HWDiv def : ProcessorModel<"krait", CortexA9Model, [ARMv7a, ProcKrait, FeatureHasRetAddrStack, FeatureMuxedUnits, FeatureCheckVLDnAlign, FeatureVMLxForwarding, FeatureFP16, FeatureAvoidPartialCPSR, FeatureVFP4, FeatureHWDivThumb, FeatureHWDivARM]>; def : ProcessorModel<"swift", SwiftModel, [ARMv7a, ProcSwift, FeatureHasRetAddrStack, FeatureNEONForFP, FeatureVFP4, FeatureUseWideStrideVFP, FeatureMP, FeatureHWDivThumb, FeatureHWDivARM, FeatureAvoidPartialCPSR, FeatureAvoidMOVsShOp, FeatureHasSlowFPVMLx, FeatureHasSlowFPVFMx, FeatureHasVMLxHazards, FeatureProfUnpredicate, FeaturePrefISHSTBarrier, FeatureSlowOddRegister, FeatureSlowLoadDSubreg, FeatureSlowVGETLNi32, FeatureSlowVDUP32, FeatureUseMISched, FeatureNoPostRASched]>; def : ProcessorModel<"cortex-r4", CortexA8Model, [ARMv7r, ProcR4, FeatureHasRetAddrStack, FeatureAvoidPartialCPSR]>; def : ProcessorModel<"cortex-r4f", CortexA8Model, [ARMv7r, ProcR4, FeatureHasRetAddrStack, FeatureSlowFPBrcc, FeatureHasSlowFPVMLx, FeatureHasSlowFPVFMx, FeatureVFP3_D16, FeatureAvoidPartialCPSR]>; def : ProcessorModel<"cortex-r5", CortexA8Model, [ARMv7r, ProcR5, FeatureHasRetAddrStack, FeatureVFP3_D16, FeatureSlowFPBrcc, FeatureHWDivARM, FeatureHasSlowFPVMLx, FeatureHasSlowFPVFMx, FeatureAvoidPartialCPSR]>; def : ProcessorModel<"cortex-r7", CortexA8Model, [ARMv7r, ProcR7, FeatureHasRetAddrStack, FeatureVFP3_D16, FeatureFP16, FeatureMP, FeatureSlowFPBrcc, FeatureHWDivARM, FeatureHasSlowFPVMLx, FeatureHasSlowFPVFMx, FeatureAvoidPartialCPSR]>; def : ProcessorModel<"cortex-r8", CortexA8Model, [ARMv7r, FeatureHasRetAddrStack, FeatureVFP3_D16, FeatureFP16, FeatureMP, FeatureSlowFPBrcc, FeatureHWDivARM, FeatureHasSlowFPVMLx, FeatureHasSlowFPVFMx, FeatureAvoidPartialCPSR]>; def : ProcessorModel<"cortex-m3", CortexM4Model, [ARMv7m, ProcM3, FeaturePrefLoopAlign32, FeatureUseMISched, FeatureHasNoBranchPredictor]>; def : ProcessorModel<"sc300", CortexM4Model, [ARMv7m, ProcM3, FeatureUseMISched, FeatureHasNoBranchPredictor]>; def : ProcessorModel<"cortex-m4", CortexM4Model, [ARMv7em, FeatureVFP4_D16_SP, FeaturePrefLoopAlign32, FeatureHasSlowFPVMLx, FeatureHasSlowFPVFMx, FeatureUseMISched, FeatureHasNoBranchPredictor]>; def : ProcNoItin<"cortex-m7", [ARMv7em, FeatureFPARMv8_D16]>; def : ProcNoItin<"cortex-m23", [ARMv8mBaseline, FeatureNoMovt]>; def : ProcessorModel<"cortex-m33", CortexM4Model, [ARMv8mMainline, FeatureDSP, FeatureFPARMv8_D16_SP, FeaturePrefLoopAlign32, FeatureHasSlowFPVMLx, FeatureHasSlowFPVFMx, FeatureUseMISched, FeatureHasNoBranchPredictor]>; def : ProcessorModel<"cortex-m35p", CortexM4Model, [ARMv8mMainline, FeatureDSP, FeatureFPARMv8_D16_SP, FeaturePrefLoopAlign32, FeatureHasSlowFPVMLx, FeatureHasSlowFPVFMx, FeatureUseMISched, FeatureHasNoBranchPredictor]>; def : ProcessorModel<"cortex-m55", CortexM4Model, [ARMv81mMainline, FeatureDSP, FeatureFPARMv8_D16, FeatureUseMISched, FeatureHasNoBranchPredictor, FeaturePrefLoopAlign32, FeatureHasSlowFPVMLx, HasMVEFloatOps]>; def : ProcNoItin<"cortex-a32", [ARMv8a, FeatureHWDivThumb, FeatureHWDivARM, FeatureCrypto, FeatureCRC]>; def : ProcNoItin<"cortex-a35", [ARMv8a, ProcA35, FeatureHWDivThumb, FeatureHWDivARM, FeatureCrypto, FeatureCRC]>; def : ProcNoItin<"cortex-a53", [ARMv8a, ProcA53, FeatureHWDivThumb, FeatureHWDivARM, FeatureCrypto, FeatureCRC, FeatureFPAO]>; def : ProcNoItin<"cortex-a55", [ARMv82a, ProcA55, FeatureHWDivThumb, FeatureHWDivARM, FeatureDotProd]>; def : ProcessorModel<"cortex-a57", CortexA57Model, [ARMv8a, ProcA57, FeatureHWDivThumb, FeatureHWDivARM, FeatureCrypto, FeatureCRC, FeatureFPAO, FeatureAvoidPartialCPSR, FeatureCheapPredicableCPSR]>; def : ProcessorModel<"cortex-a72", CortexA57Model, [ARMv8a, ProcA72, FeatureHWDivThumb, FeatureHWDivARM, FeatureCrypto, FeatureCRC]>; def : ProcNoItin<"cortex-a73", [ARMv8a, ProcA73, FeatureHWDivThumb, FeatureHWDivARM, FeatureCrypto, FeatureCRC]>; def : ProcNoItin<"cortex-a75", [ARMv82a, ProcA75, FeatureHWDivThumb, FeatureHWDivARM, FeatureDotProd]>; def : ProcNoItin<"cortex-a76", [ARMv82a, ProcA76, FeatureHWDivThumb, FeatureHWDivARM, FeatureCrypto, FeatureCRC, FeatureFullFP16, FeatureDotProd]>; def : ProcNoItin<"cortex-a76ae", [ARMv82a, ProcA76, FeatureHWDivThumb, FeatureHWDivARM, FeatureCrypto, FeatureCRC, FeatureFullFP16, FeatureDotProd]>; def : ProcNoItin<"cortex-a77", [ARMv82a, ProcA77, FeatureHWDivThumb, FeatureHWDivARM, FeatureCrypto, FeatureCRC, FeatureFullFP16, FeatureDotProd]>; def : ProcNoItin<"cortex-a78", [ARMv82a, ProcA78, FeatureHWDivThumb, FeatureHWDivARM, FeatureCrypto, FeatureCRC, FeatureFullFP16, FeatureDotProd]>; def : ProcNoItin<"cortex-x1", [ARMv82a, ProcX1, FeatureHWDivThumb, FeatureHWDivARM, FeatureCrypto, FeatureCRC, FeatureFullFP16, FeatureDotProd]>; def : ProcNoItin<"neoverse-n1", [ARMv82a, FeatureHWDivThumb, FeatureHWDivARM, FeatureCrypto, FeatureCRC, FeatureDotProd]>; def : ProcessorModel<"cyclone", SwiftModel, [ARMv8a, ProcSwift, FeatureHasRetAddrStack, FeatureNEONForFP, FeatureVFP4, FeatureMP, FeatureHWDivThumb, FeatureHWDivARM, FeatureAvoidPartialCPSR, FeatureAvoidMOVsShOp, FeatureHasSlowFPVMLx, FeatureHasSlowFPVFMx, FeatureCrypto, FeatureUseMISched, FeatureZCZeroing, FeatureNoPostRASched]>; def : ProcNoItin<"exynos-m3", [ARMv8a, ProcExynos]>; def : ProcNoItin<"exynos-m4", [ARMv82a, ProcExynos, FeatureFullFP16, FeatureDotProd]>; def : ProcNoItin<"exynos-m5", [ARMv82a, ProcExynos, FeatureFullFP16, FeatureDotProd]>; def : ProcNoItin<"kryo", [ARMv8a, ProcKryo, FeatureHWDivThumb, FeatureHWDivARM, FeatureCrypto, FeatureCRC]>; def : ProcessorModel<"cortex-r52", CortexR52Model, [ARMv8r, ProcR52, FeatureUseMISched, FeatureFPAO]>; //===----------------------------------------------------------------------===// // Register File Description //===----------------------------------------------------------------------===// include "ARMRegisterInfo.td" include "ARMRegisterBanks.td" include "ARMCallingConv.td" //===----------------------------------------------------------------------===// // Instruction Descriptions //===----------------------------------------------------------------------===// include "ARMInstrInfo.td" def ARMInstrInfo : InstrInfo; //===----------------------------------------------------------------------===// // Declare the target which we are implementing //===----------------------------------------------------------------------===// def ARMAsmWriter : AsmWriter { string AsmWriterClassName = "InstPrinter"; int PassSubtarget = 1; int Variant = 0; bit isMCAsmWriter = 1; } def ARMAsmParser : AsmParser { bit ReportMultipleNearMisses = 1; } def ARMAsmParserVariant : AsmParserVariant { int Variant = 0; string Name = "ARM"; string BreakCharacters = "."; } def ARM : Target { // Pull in Instruction Info. let InstructionSet = ARMInstrInfo; let AssemblyWriters = [ARMAsmWriter]; let AssemblyParsers = [ARMAsmParser]; let AssemblyParserVariants = [ARMAsmParserVariant]; let AllowRegisterRenaming = 1; }