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ARM.td
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ARM.td
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//===-- 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<string name, string query, string description,
list<SubtargetFeature> prev,
list<SubtargetFeature> otherimplies,
list<SubtargetFeature> vfp2prev = []> {
def _D16_SP: SubtargetFeature<
name#"d16sp", query#"D16SP", "true",
description#" with only 16 d-registers and no double precision",
!foreach(v, prev, !cast<SubtargetFeature>(v # "_D16_SP")) #
!foreach(v, vfp2prev, !cast<SubtargetFeature>(v # "_SP")) #
otherimplies>;
def _SP: SubtargetFeature<
name#"sp", query#"SP", "true",
description#" with no double precision",
!foreach(v, prev, !cast<SubtargetFeature>(v # "_SP")) #
otherimplies # [FeatureD32, !cast<SubtargetFeature>(NAME # "_D16_SP")]>;
def _D16: SubtargetFeature<
name#"d16", query#"D16", "true",
description#" with only 16 d-registers",
!foreach(v, prev, !cast<SubtargetFeature>(v # "_D16")) #
vfp2prev #
otherimplies # [FeatureFP64, !cast<SubtargetFeature>(NAME # "_D16_SP")]>;
def "": SubtargetFeature<
name, query, "true", description,
prev # otherimplies # [
!cast<SubtargetFeature>(NAME # "_D16"),
!cast<SubtargetFeature>(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">;
def FeatureFixCMSE_CVE_2021_35465 : SubtargetFeature<"fix-cmse-cve-2021-35465",
"FixCMSE_CVE_2021_35465", "true",
"Mitigate against the cve-2021-35465 "
"security vulnurability">;
def FeaturePACBTI : SubtargetFeature<"pacbti", "HasPACBTI", "true",
"Enable Pointer Authentication and Branch "
"Target Identification">;
def FeatureNoBTIAtReturnTwice : SubtargetFeature<"no-bti-at-return-twice",
"NoBTIAtReturnTwice", "true",
"Don't place a BTI instruction "
"after a return-twice">;
//===----------------------------------------------------------------------===//
// 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_7aOps : SubtargetFeature<"v8.7a", "HasV8_7aOps", "true",
"Support ARM v8.7a instructions",
[HasV8_6aOps]>;
def HasV9_0aOps : SubtargetFeature<"v9a", "HasV9_0aOps", "true",
"Support ARM v9a instructions",
[HasV8_5aOps]>;
def HasV9_1aOps : SubtargetFeature<"v9.1a", "HasV9_1aOps", "true",
"Support ARM v9.1a instructions",
[HasV8_6aOps, HasV9_0aOps]>;
def HasV9_2aOps : SubtargetFeature<"v9.2a", "HasV9_2aOps", "true",
"Support ARM v9.2a instructions",
[HasV8_7aOps, HasV9_1aOps]>;
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]>;
//===----------------------------------------------------------------------===//
// Control codegen mitigation against Straight Line Speculation vulnerability.
//===----------------------------------------------------------------------===//
def FeatureHardenSlsRetBr : SubtargetFeature<"harden-sls-retbr",
"HardenSlsRetBr", "true",
"Harden against straight line speculation across RETurn and BranchRegister "
"instructions">;
def FeatureHardenSlsBlr : SubtargetFeature<"harden-sls-blr",
"HardenSlsBlr", "true",
"Harden against straight line speculation across indirect calls">;
def FeatureHardenSlsNoComdat : SubtargetFeature<"harden-sls-nocomdat",
"HardenSlsNoComdat", "true",
"Generate thunk code for SLS mitigation in the normal text section">;
//===----------------------------------------------------------------------===//
// 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 ProcA78C : SubtargetFeature<"a78c", "ARMProcFamily", "CortexA78C",
"Cortex-A78C ARM processors", []>;
def ProcA710 : SubtargetFeature<"cortex-a710", "ARMProcFamily",
"CortexA710", "Cortex-A710 ARM processors", []>;
def ProcX1 : SubtargetFeature<"cortex-x1", "ARMProcFamily", "CortexX1",
"Cortex-X1 ARM processors", []>;
def ProcV1 : SubtargetFeature<"neoverse-v1", "ARMProcFamily",
"NeoverseV1", "Neoverse-V1 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", []>;
def ProcM7 : SubtargetFeature<"m7", "ARMProcFamily", "CortexM7",
"Cortex-M7 ARM processors", []>;
//===----------------------------------------------------------------------===//
// ARM Helper classes.
//
class Architecture<string fname, string aname, list<SubtargetFeature> features>
: SubtargetFeature<fname, "ARMArch", aname,
!strconcat(aname, " architecture"), features>;
class ProcNoItin<string Name, list<SubtargetFeature> Features>
: Processor<Name, NoItineraries, Features>;
//===----------------------------------------------------------------------===//
// 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 ARMv87a : Architecture<"armv8.7-a", "ARMv87a", [HasV8_7aOps,
FeatureAClass,
FeatureDB,
FeatureFPARMv8,
FeatureNEON,
FeatureDSP,
FeatureTrustZone,
FeatureMP,
FeatureVirtualization,
FeatureCrypto,
FeatureCRC,
FeatureRAS,
FeatureDotProd]>;
def ARMv9a : Architecture<"armv9-a", "ARMv9a", [HasV9_0aOps,
FeatureAClass,
FeatureDB,
FeatureFPARMv8,
FeatureNEON,
FeatureDSP,
FeatureTrustZone,
FeatureMP,
FeatureVirtualization,
FeatureCRC,
FeatureRAS,
FeatureDotProd]>;
def ARMv91a : Architecture<"armv9.1-a", "ARMv91a", [HasV9_1aOps,
FeatureAClass,
FeatureDB,
FeatureFPARMv8,
FeatureNEON,
FeatureDSP,
FeatureTrustZone,
FeatureMP,
FeatureVirtualization,
FeatureCRC,
FeatureRAS,
FeatureDotProd]>;
def ARMv92a : Architecture<"armv9.2-a", "ARMv92a", [HasV9_2aOps,
FeatureAClass,
FeatureDB,
FeatureFPARMv8,
FeatureNEON,
FeatureDSP,
FeatureTrustZone,
FeatureMP,
FeatureVirtualization,
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]>;
//===----------------------------------------------------------------------===//
// Register File Description
//===----------------------------------------------------------------------===//
include "ARMRegisterInfo.td"
include "ARMRegisterBanks.td"
include "ARMCallingConv.td"
//===----------------------------------------------------------------------===//
// ARM schedules.
//===----------------------------------------------------------------------===//
//
include "ARMPredicates.td"