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RISCV.td
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//===-- RISCV.td - Describe the RISCV 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
//
//===----------------------------------------------------------------------===//
include "llvm/Target/Target.td"
//===----------------------------------------------------------------------===//
// RISC-V subtarget features and instruction predicates.
//===----------------------------------------------------------------------===//
def FeatureStdExtM
: SubtargetFeature<"m", "HasStdExtM", "true",
"'M' (Integer Multiplication and Division)">;
def HasStdExtM : Predicate<"Subtarget->hasStdExtM()">,
AssemblerPredicate<(all_of FeatureStdExtM),
"'M' (Integer Multiplication and Division)">;
def FeatureStdExtA
: SubtargetFeature<"a", "HasStdExtA", "true",
"'A' (Atomic Instructions)">;
def HasStdExtA : Predicate<"Subtarget->hasStdExtA()">,
AssemblerPredicate<(all_of FeatureStdExtA),
"'A' (Atomic Instructions)">;
def FeatureStdExtF
: SubtargetFeature<"f", "HasStdExtF", "true",
"'F' (Single-Precision Floating-Point)">;
def HasStdExtF : Predicate<"Subtarget->hasStdExtF()">,
AssemblerPredicate<(all_of FeatureStdExtF),
"'F' (Single-Precision Floating-Point)">;
def FeatureStdExtD
: SubtargetFeature<"d", "HasStdExtD", "true",
"'D' (Double-Precision Floating-Point)",
[FeatureStdExtF]>;
def HasStdExtD : Predicate<"Subtarget->hasStdExtD()">,
AssemblerPredicate<(all_of FeatureStdExtD),
"'D' (Double-Precision Floating-Point)">;
def FeatureStdExtZihintpause
: SubtargetFeature<"zihintpause", "HasStdExtZihintpause", "true",
"'zihintpause' (Pause Hint)">;
def HasStdExtZihintpause : Predicate<"Subtarget->hasStdExtZihintpause()">,
AssemblerPredicate<(all_of FeatureStdExtZihintpause),
"'Zihintpause' (Pause Hint)">;
def FeatureStdExtZfhmin
: SubtargetFeature<"zfhmin", "HasStdExtZfhmin", "true",
"'Zfhmin' (Half-Precision Floating-Point Minimal)",
[FeatureStdExtF]>;
def HasStdExtZfhmin : Predicate<"Subtarget->hasStdExtZfhmin()">,
AssemblerPredicate<(all_of FeatureStdExtZfhmin),
"'Zfhmin' (Half-Precision Floating-Point Minimal)">;
def FeatureStdExtZfh
: SubtargetFeature<"zfh", "HasStdExtZfh", "true",
"'Zfh' (Half-Precision Floating-Point)",
[FeatureStdExtF]>;
def HasStdExtZfh : Predicate<"Subtarget->hasStdExtZfh()">,
AssemblerPredicate<(all_of FeatureStdExtZfh),
"'Zfh' (Half-Precision Floating-Point)">;
def HasStdExtZfhOrZfhmin
: Predicate<"Subtarget->hasStdExtZfh() || Subtarget->hasStdExtZfhmin()">,
AssemblerPredicate<(any_of FeatureStdExtZfh, FeatureStdExtZfhmin),
"'Zfh' (Half-Precision Floating-Point) or "
"'Zfhmin' (Half-Precision Floating-Point Minimal)">;
def FeatureStdExtC
: SubtargetFeature<"c", "HasStdExtC", "true",
"'C' (Compressed Instructions)">;
def HasStdExtC : Predicate<"Subtarget->hasStdExtC()">,
AssemblerPredicate<(all_of FeatureStdExtC),
"'C' (Compressed Instructions)">;
def FeatureStdExtZba
: SubtargetFeature<"zba", "HasStdExtZba", "true",
"'Zba' (Address Generation Instructions)">;
def HasStdExtZba : Predicate<"Subtarget->hasStdExtZba()">,
AssemblerPredicate<(all_of FeatureStdExtZba),
"'Zba' (Address Generation Instructions)">;
def NotHasStdExtZba : Predicate<"!Subtarget->hasStdExtZba()">;
def FeatureStdExtZbb
: SubtargetFeature<"zbb", "HasStdExtZbb", "true",
"'Zbb' (Basic Bit-Manipulation)">;
def HasStdExtZbb : Predicate<"Subtarget->hasStdExtZbb()">,
AssemblerPredicate<(all_of FeatureStdExtZbb),
"'Zbb' (Basic Bit-Manipulation)">;
def FeatureStdExtZbc
: SubtargetFeature<"zbc", "HasStdExtZbc", "true",
"'Zbc' (Carry-Less Multiplication)">;
def HasStdExtZbc : Predicate<"Subtarget->hasStdExtZbc()">,
AssemblerPredicate<(all_of FeatureStdExtZbc),
"'Zbc' (Carry-Less Multiplication)">;
def FeatureStdExtZbe
: SubtargetFeature<"experimental-zbe", "HasStdExtZbe", "true",
"'Zbe' (Extract-Deposit 'Zb' Instructions)">;
def HasStdExtZbe : Predicate<"Subtarget->hasStdExtZbe()">,
AssemblerPredicate<(all_of FeatureStdExtZbe),
"'Zbe' (Extract-Deposit 'Zb' Instructions)">;
def FeatureStdExtZbf
: SubtargetFeature<"experimental-zbf", "HasStdExtZbf", "true",
"'Zbf' (Bit-Field 'Zb' Instructions)">;
def HasStdExtZbf : Predicate<"Subtarget->hasStdExtZbf()">,
AssemblerPredicate<(all_of FeatureStdExtZbf),
"'Zbf' (Bit-Field 'Zb' Instructions)">;
def FeatureStdExtZbm
: SubtargetFeature<"experimental-zbm", "HasStdExtZbm", "true",
"'Zbm' (Matrix 'Zb' Instructions)">;
def HasStdExtZbm : Predicate<"Subtarget->hasStdExtZbm()">,
AssemblerPredicate<(all_of FeatureStdExtZbm),
"'Zbm' (Matrix 'Zb' Instructions)">;
def FeatureStdExtZbp
: SubtargetFeature<"experimental-zbp", "HasStdExtZbp", "true",
"'Zbp' (Permutation 'Zb' Instructions)">;
def HasStdExtZbp : Predicate<"Subtarget->hasStdExtZbp()">,
AssemblerPredicate<(all_of FeatureStdExtZbp),
"'Zbp' (Permutation 'Zb' Instructions)">;
def FeatureStdExtZbr
: SubtargetFeature<"experimental-zbr", "HasStdExtZbr", "true",
"'Zbr' (Polynomial Reduction 'Zb' Instructions)">;
def HasStdExtZbr : Predicate<"Subtarget->hasStdExtZbr()">,
AssemblerPredicate<(all_of FeatureStdExtZbr),
"'Zbr' (Polynomial Reduction 'Zb' Instructions)">;
def FeatureStdExtZbs
: SubtargetFeature<"zbs", "HasStdExtZbs", "true",
"'Zbs' (Single-Bit Instructions)">;
def HasStdExtZbs : Predicate<"Subtarget->hasStdExtZbs()">,
AssemblerPredicate<(all_of FeatureStdExtZbs),
"'Zbs' (Single-Bit Instructions)">;
def FeatureStdExtZbt
: SubtargetFeature<"experimental-zbt", "HasStdExtZbt", "true",
"'Zbt' (Ternary 'Zb' Instructions)">;
def HasStdExtZbt : Predicate<"Subtarget->hasStdExtZbt()">,
AssemblerPredicate<(all_of FeatureStdExtZbt),
"'Zbt' (Ternary 'Zb' Instructions)">;
// Some instructions belong to both the basic and the permutation
// subextensions. They should be enabled if either has been specified.
def HasStdExtZbbOrZbp
: Predicate<"Subtarget->hasStdExtZbb() || Subtarget->hasStdExtZbp()">,
AssemblerPredicate<(any_of FeatureStdExtZbb, FeatureStdExtZbp),
"'Zbb' (Basic Bit-Manipulation) or "
"'Zbp' (Permutation 'Zb' Instructions)">;
def FeatureStdExtZbkb
: SubtargetFeature<"zbkb", "HasStdExtZbkb", "true",
"'Zbkb' (Bitmanip instructions for Cryptography)">;
def HasStdExtZbkb : Predicate<"Subtarget->hasStdExtZbkb()">,
AssemblerPredicate<(all_of FeatureStdExtZbkb),
"'Zbkb' (Bitmanip instructions for Cryptography)">;
def FeatureStdExtZbkx
: SubtargetFeature<"zbkx", "HasStdExtZbkx", "true",
"'Zbkx' (Crossbar permutation instructions)">;
def HasStdExtZbkx : Predicate<"Subtarget->hasStdExtZbkx()">,
AssemblerPredicate<(all_of FeatureStdExtZbkx),
"'Zbkx' (Crossbar permutation instructions)">;
def HasStdExtZbpOrZbkx
: Predicate<"Subtarget->hasStdExtZbp() || Subtarget->hasStdExtZbkx()">,
AssemblerPredicate<(any_of FeatureStdExtZbp, FeatureStdExtZbkx),
"'Zbp' (Permutation 'Zb' Instructions) or "
"'Zbkx' (Crossbar permutation instructions)">;
def HasStdExtZbpOrZbkb
: Predicate<"Subtarget->hasStdExtZbp() || Subtarget->hasStdExtZbkb()">,
AssemblerPredicate<(any_of FeatureStdExtZbp, FeatureStdExtZbkb),
"'Zbp' (Permutation 'Zb' Instructions) or "
"'Zbkb' (Bitmanip instructions for Cryptography)">;
def HasStdExtZbbOrZbkb
: Predicate<"Subtarget->hasStdExtZbb() || Subtarget->hasStdExtZbkb()">,
AssemblerPredicate<(any_of FeatureStdExtZbb, FeatureStdExtZbkb),
"'Zbb' (Basic Bit-Manipulation) or "
"'Zbkb' (Bitmanip instructions for Cryptography)">;
def HasStdExtZbbOrZbpOrZbkb
: Predicate<"Subtarget->hasStdExtZbb() || Subtarget->hasStdExtZbp() || Subtarget->hasStdExtZbkb()">,
AssemblerPredicate<(any_of FeatureStdExtZbb, FeatureStdExtZbp, FeatureStdExtZbkb),
"'Zbb' (Basic Bit-Manipulation) or "
"'Zbp' (Permutation 'Zb' Instructions) or "
"'Zbkb' (Bitmanip instructions for Cryptography)">;
// The Carry-less multiply subextension for cryptography is a subset of basic carry-less multiply subextension. The former should be enabled if the latter is enabled.
def FeatureStdExtZbkc
: SubtargetFeature<"zbkc", "HasStdExtZbkc", "true",
"'Zbkc' (Carry-less multiply instructions for Cryptography)">;
def HasStdExtZbkc
: Predicate<"Subtarget->hasStdExtZbkc()">,
AssemblerPredicate<(all_of FeatureStdExtZbkc),
"'Zbkc' (Carry-less multiply instructions for Cryptography)">;
def HasStdExtZbcOrZbkc
: Predicate<"Subtarget->hasStdExtZbc() || Subtarget->hasStdExtZbkc()">,
AssemblerPredicate<(any_of FeatureStdExtZbc, FeatureStdExtZbkc),
"'Zbc' (Carry-Less Multiplication) or "
"'Zbkc' (Carry-less multiply instructions for Cryptography)">;
def FeatureStdExtZknd
: SubtargetFeature<"zknd", "HasStdExtZknd", "true",
"'Zknd' (NIST Suite: AES Decryption)">;
def HasStdExtZknd : Predicate<"Subtarget->hasStdExtZknd()">,
AssemblerPredicate<(all_of FeatureStdExtZknd),
"'Zknd' (NIST Suite: AES Decryption)">;
def FeatureStdExtZkne
: SubtargetFeature<"zkne", "HasStdExtZkne", "true",
"'Zkne' (NIST Suite: AES Encryption)">;
def HasStdExtZkne : Predicate<"Subtarget->hasStdExtZkne()">,
AssemblerPredicate<(all_of FeatureStdExtZkne),
"'Zkne' (NIST Suite: AES Encryption)">;
// Some instructions belong to both Zknd and Zkne subextensions.
// They should be enabled if either has been specified.
def HasStdExtZkndOrZkne
: Predicate<"Subtarget->hasStdExtZknd() || Subtarget->hasStdExtZkne()">,
AssemblerPredicate<(any_of FeatureStdExtZknd, FeatureStdExtZkne),
"'Zknd' (NIST Suite: AES Decryption) or "
"'Zkne' (NIST Suite: AES Encryption)">;
def FeatureStdExtZknh
: SubtargetFeature<"zknh", "HasStdExtZknh", "true",
"'Zknh' (NIST Suite: Hash Function Instructions)">;
def HasStdExtZknh : Predicate<"Subtarget->hasStdExtZknh()">,
AssemblerPredicate<(all_of FeatureStdExtZknh),
"'Zknh' (NIST Suite: Hash Function Instructions)">;
def FeatureStdExtZksed
: SubtargetFeature<"zksed", "HasStdExtZksed", "true",
"'Zksed' (ShangMi Suite: SM4 Block Cipher Instructions)">;
def HasStdExtZksed : Predicate<"Subtarget->hasStdExtZksed()">,
AssemblerPredicate<(all_of FeatureStdExtZksed),
"'Zksed' (ShangMi Suite: SM4 Block Cipher Instructions)">;
def FeatureStdExtZksh
: SubtargetFeature<"zksh", "HasStdExtZksh", "true",
"'Zksh' (ShangMi Suite: SM3 Hash Function Instructions)">;
def HasStdExtZksh : Predicate<"Subtarget->hasStdExtZksh()">,
AssemblerPredicate<(all_of FeatureStdExtZksh),
"'Zksh' (ShangMi Suite: SM3 Hash Function Instructions)">;
def FeatureStdExtZkr
: SubtargetFeature<"zkr", "HasStdExtZkr", "true",
"'Zkr' (Entropy Source Extension)">;
def HasStdExtZkr : Predicate<"Subtarget->hasStdExtZkr()">,
AssemblerPredicate<(all_of FeatureStdExtZkr),
"'Zkr' (Entropy Source Extension)">;
def FeatureStdExtZkn
: SubtargetFeature<"zkn", "HasStdExtZkn", "true",
"'Zkn' (NIST Algorithm Suite)",
[FeatureStdExtZbkb,
FeatureStdExtZbkc,
FeatureStdExtZbkx,
FeatureStdExtZkne,
FeatureStdExtZknd,
FeatureStdExtZknh]>;
def FeatureStdExtZks
: SubtargetFeature<"zks", "HasStdExtZks", "true",
"'Zks' (ShangMi Algorithm Suite)",
[FeatureStdExtZbkb,
FeatureStdExtZbkc,
FeatureStdExtZbkx,
FeatureStdExtZksed,
FeatureStdExtZksh]>;
def FeatureStdExtZkt
: SubtargetFeature<"zkt", "HasStdExtZkt", "true",
"'Zkt' (Data Independent Execution Latency)">;
def FeatureStdExtZk
: SubtargetFeature<"zk", "HasStdExtZk", "true",
"'Zk' (Standard scalar cryptography extension)",
[FeatureStdExtZkn,
FeatureStdExtZkr,
FeatureStdExtZkt]>;
def FeatureNoRVCHints
: SubtargetFeature<"no-rvc-hints", "EnableRVCHintInstrs", "false",
"Disable RVC Hint Instructions.">;
def HasRVCHints : Predicate<"Subtarget->enableRVCHintInstrs()">,
AssemblerPredicate<(all_of(not FeatureNoRVCHints)),
"RVC Hint Instructions">;
def FeatureStdExtZvl32b : SubtargetFeature<"zvl32b", "ZvlLen", "ExtZvl::Zvl32b",
"'Zvl' (Minimum Vector Length) 32">;
foreach i = { 6-15 } in {
defvar I = !shl(1, i);
def FeatureStdExtZvl#I#b :
SubtargetFeature<"zvl"#I#"b", "ZvlLen", "ExtZvl::Zvl"#I#"b",
"'Zvl' (Minimum Vector Length) "#I,
[!cast<SubtargetFeature>("FeatureStdExtZvl"#!srl(I, 1)#"b")]>;
}
def FeatureStdExtZve32x
: SubtargetFeature<"zve32x", "HasStdExtZve32x", "true",
"'Zve32x' (Vector Extensions for Embedded Processors "
"with maximal 32 EEW)",
[FeatureStdExtZvl32b]>;
def FeatureStdExtZve32f
: SubtargetFeature<"zve32f", "HasStdExtZve32f", "true",
"'Zve32f' (Vector Extensions for Embedded Processors "
"with maximal 32 EEW and F extension)",
[FeatureStdExtZve32x]>;
def FeatureStdExtZve64x
: SubtargetFeature<"zve64x", "HasStdExtZve64x", "true",
"'Zve64x' (Vector Extensions for Embedded Processors "
"with maximal 64 EEW)", [FeatureStdExtZve32x, FeatureStdExtZvl64b]>;
def FeatureStdExtZve64f
: SubtargetFeature<"zve64f", "HasStdExtZve64f", "true",
"'Zve64f' (Vector Extensions for Embedded Processors "
"with maximal 64 EEW and F extension)",
[FeatureStdExtZve32f, FeatureStdExtZve64x]>;
def FeatureStdExtZve64d
: SubtargetFeature<"zve64d", "HasStdExtZve64d", "true",
"'Zve64d' (Vector Extensions for Embedded Processors "
"with maximal 64 EEW, F and D extension)",
[FeatureStdExtZve64f]>;
def FeatureStdExtV
: SubtargetFeature<"v", "HasStdExtV", "true",
"'V' (Vector Extension for Application Processors)",
[FeatureStdExtZvl128b, FeatureStdExtF, FeatureStdExtD]>;
def HasVInstructions : Predicate<"Subtarget->hasVInstructions()">,
AssemblerPredicate<
(any_of FeatureStdExtZve32x, FeatureStdExtV),
"'V' (Vector Extension for Application Processors), 'Zve32x' or "
"'Zve64x' (Vector Extensions for Embedded Processors)">;
def HasVInstructionsI64 : Predicate<"Subtarget->hasVInstructionsI64()">,
AssemblerPredicate<
(any_of FeatureStdExtZve64x, FeatureStdExtV),
"'V' (Vector Extension for Application Processors) or 'Zve64x' "
"(Vector Extensions for Embedded Processors)">;
def HasVInstructionsAnyF : Predicate<"Subtarget->hasVInstructionsAnyF()">,
AssemblerPredicate<
(any_of FeatureStdExtZve32f, FeatureStdExtV),
"'V' (Vector Extension for Application Processors), 'Zve32f', "
"'Zve64f' or 'Zve64d' (Vector Extensions for Embedded Processors)">;
def Feature64Bit
: SubtargetFeature<"64bit", "HasRV64", "true", "Implements RV64">;
def IsRV64 : Predicate<"Subtarget->is64Bit()">,
AssemblerPredicate<(all_of Feature64Bit),
"RV64I Base Instruction Set">;
def IsRV32 : Predicate<"!Subtarget->is64Bit()">,
AssemblerPredicate<(all_of (not Feature64Bit)),
"RV32I Base Instruction Set">;
defvar RV32 = DefaultMode;
def RV64 : HwMode<"+64bit">;
def FeatureRV32E
: SubtargetFeature<"e", "IsRV32E", "true",
"Implements RV32E (provides 16 rather than 32 GPRs)">;
def IsRV32E : Predicate<"Subtarget->isRV32E()">,
AssemblerPredicate<(all_of FeatureRV32E)>;
def FeatureRelax
: SubtargetFeature<"relax", "EnableLinkerRelax", "true",
"Enable Linker relaxation.">;
foreach i = {1-31} in
def FeatureReserveX#i :
SubtargetFeature<"reserve-x"#i, "UserReservedRegister[RISCV::X"#i#"]",
"true", "Reserve X"#i>;
def FeatureSaveRestore : SubtargetFeature<"save-restore", "EnableSaveRestore",
"true", "Enable save/restore.">;
def TuneSiFive7 : SubtargetFeature<"sifive7", "RISCVProcFamily", "SiFive7",
"SiFive 7-Series processors">;
//===----------------------------------------------------------------------===//
// Named operands for CSR instructions.
//===----------------------------------------------------------------------===//
include "RISCVSystemOperands.td"
//===----------------------------------------------------------------------===//
// Registers, calling conventions, instruction descriptions.
//===----------------------------------------------------------------------===//
include "RISCVSchedule.td"
include "RISCVRegisterInfo.td"
include "RISCVCallingConv.td"
include "RISCVInstrInfo.td"
include "RISCVRegisterBanks.td"
include "RISCVSchedRocket.td"
include "RISCVSchedSiFive7.td"
//===----------------------------------------------------------------------===//
// RISC-V processors supported.
//===----------------------------------------------------------------------===//
def : ProcessorModel<"generic-rv32", NoSchedModel, []>;
def : ProcessorModel<"generic-rv64", NoSchedModel, [Feature64Bit]>;
def : ProcessorModel<"rocket-rv32", RocketModel, []>;
def : ProcessorModel<"rocket-rv64", RocketModel, [Feature64Bit]>;
def : ProcessorModel<"sifive-7-rv32", SiFive7Model, [],
[TuneSiFive7]>;
def : ProcessorModel<"sifive-7-rv64", SiFive7Model, [Feature64Bit],
[TuneSiFive7]>;
def : ProcessorModel<"sifive-e20", RocketModel, [FeatureStdExtM,
FeatureStdExtC]>;
def : ProcessorModel<"sifive-e21", RocketModel, [FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtC]>;
def : ProcessorModel<"sifive-e24", RocketModel, [FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtF,
FeatureStdExtC]>;
def : ProcessorModel<"sifive-e31", RocketModel, [FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtC]>;
def : ProcessorModel<"sifive-e34", RocketModel, [FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtF,
FeatureStdExtC]>;
def : ProcessorModel<"sifive-e76", SiFive7Model, [FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtF,
FeatureStdExtC],
[TuneSiFive7]>;
def : ProcessorModel<"sifive-s21", RocketModel, [Feature64Bit,
FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtC]>;
def : ProcessorModel<"sifive-s51", RocketModel, [Feature64Bit,
FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtC]>;
def : ProcessorModel<"sifive-s54", RocketModel, [Feature64Bit,
FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtF,
FeatureStdExtD,
FeatureStdExtC]>;
def : ProcessorModel<"sifive-s76", SiFive7Model, [Feature64Bit,
FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtF,
FeatureStdExtD,
FeatureStdExtC],
[TuneSiFive7]>;
def : ProcessorModel<"sifive-u54", RocketModel, [Feature64Bit,
FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtF,
FeatureStdExtD,
FeatureStdExtC]>;
def : ProcessorModel<"sifive-u74", SiFive7Model, [Feature64Bit,
FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtF,
FeatureStdExtD,
FeatureStdExtC],
[TuneSiFive7]>;
//===----------------------------------------------------------------------===//
// Define the RISC-V target.
//===----------------------------------------------------------------------===//
def RISCVInstrInfo : InstrInfo {
let guessInstructionProperties = 0;
}
def RISCVAsmParser : AsmParser {
let ShouldEmitMatchRegisterAltName = 1;
let AllowDuplicateRegisterNames = 1;
}
def RISCVAsmWriter : AsmWriter {
int PassSubtarget = 1;
}
def RISCV : Target {
let InstructionSet = RISCVInstrInfo;
let AssemblyParsers = [RISCVAsmParser];
let AssemblyWriters = [RISCVAsmWriter];
let AllowRegisterRenaming = 1;
}