6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-11-01 00:11:00 +00:00
Code Issues Projects Releases Wiki Activity
7a447391cc
llvm-6502/lib/Target/ARM/ARMInstrFormats.td
Tim Northover f52efce72d ARM: implement MRS/MSR (banked reg) system instructions. 
These are system-only instructions for CPUs with virtualization
extensions, allowing a hypervisor easy access to all of the various
different AArch32 registers.

rdar://problem/17861345

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215700 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-15 10:47:12 +00:00

2368 lines
79 KiB
TableGen
Raw Blame History

//===-- ARMInstrFormats.td - ARM Instruction Formats -------*- tablegen -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
//
// ARM Instruction Format Definitions.
//
// Format specifies the encoding used by the instruction. This is part of the
// ad-hoc solution used to emit machine instruction encodings by our machine
// code emitter.
class Format<bits<6> val> {
bits<6> Value = val;
}
def Pseudo : Format<0>;
def MulFrm : Format<1>;
def BrFrm : Format<2>;
def BrMiscFrm : Format<3>;
def DPFrm : Format<4>;
def DPSoRegRegFrm : Format<5>;
def LdFrm : Format<6>;
def StFrm : Format<7>;
def LdMiscFrm : Format<8>;
def StMiscFrm : Format<9>;
def LdStMulFrm : Format<10>;
def LdStExFrm : Format<11>;
def ArithMiscFrm : Format<12>;
def SatFrm : Format<13>;
def ExtFrm : Format<14>;
def VFPUnaryFrm : Format<15>;
def VFPBinaryFrm : Format<16>;
def VFPConv1Frm : Format<17>;
def VFPConv2Frm : Format<18>;
def VFPConv3Frm : Format<19>;
def VFPConv4Frm : Format<20>;
def VFPConv5Frm : Format<21>;
def VFPLdStFrm : Format<22>;
def VFPLdStMulFrm : Format<23>;
def VFPMiscFrm : Format<24>;
def ThumbFrm : Format<25>;
def MiscFrm : Format<26>;
def NGetLnFrm : Format<27>;
def NSetLnFrm : Format<28>;
def NDupFrm : Format<29>;
def NLdStFrm : Format<30>;
def N1RegModImmFrm: Format<31>;
def N2RegFrm : Format<32>;
def NVCVTFrm : Format<33>;
def NVDupLnFrm : Format<34>;
def N2RegVShLFrm : Format<35>;
def N2RegVShRFrm : Format<36>;
def N3RegFrm : Format<37>;
def N3RegVShFrm : Format<38>;
def NVExtFrm : Format<39>;
def NVMulSLFrm : Format<40>;
def NVTBLFrm : Format<41>;
def DPSoRegImmFrm : Format<42>;
// Misc flags.
// The instruction has an Rn register operand.
// UnaryDP - Indicates this is a unary data processing instruction, i.e.
// it doesn't have a Rn operand.
class UnaryDP { bit isUnaryDataProc = 1; }
// Xform16Bit - Indicates this Thumb2 instruction may be transformed into
// a 16-bit Thumb instruction if certain conditions are met.
class Xform16Bit { bit canXformTo16Bit = 1; }
//===----------------------------------------------------------------------===//
// ARM Instruction flags. These need to match ARMBaseInstrInfo.h.
//
// FIXME: Once the JIT is MC-ized, these can go away.
// Addressing mode.
class AddrMode<bits<5> val> {
bits<5> Value = val;
}
def AddrModeNone : AddrMode<0>;
def AddrMode1 : AddrMode<1>;
def AddrMode2 : AddrMode<2>;
def AddrMode3 : AddrMode<3>;
def AddrMode4 : AddrMode<4>;
def AddrMode5 : AddrMode<5>;
def AddrMode6 : AddrMode<6>;
def AddrModeT1_1 : AddrMode<7>;
def AddrModeT1_2 : AddrMode<8>;
def AddrModeT1_4 : AddrMode<9>;
def AddrModeT1_s : AddrMode<10>;
def AddrModeT2_i12 : AddrMode<11>;
def AddrModeT2_i8 : AddrMode<12>;
def AddrModeT2_so : AddrMode<13>;
def AddrModeT2_pc : AddrMode<14>;
def AddrModeT2_i8s4 : AddrMode<15>;
def AddrMode_i12 : AddrMode<16>;
// Load / store index mode.
class IndexMode<bits<2> val> {
bits<2> Value = val;
}
def IndexModeNone : IndexMode<0>;
def IndexModePre : IndexMode<1>;
def IndexModePost : IndexMode<2>;
def IndexModeUpd : IndexMode<3>;
// Instruction execution domain.
class Domain<bits<3> val> {
bits<3> Value = val;
}
def GenericDomain : Domain<0>;
def VFPDomain : Domain<1>; // Instructions in VFP domain only
def NeonDomain : Domain<2>; // Instructions in Neon domain only
def VFPNeonDomain : Domain<3>; // Instructions in both VFP & Neon domains
def VFPNeonA8Domain : Domain<5>; // Instructions in VFP & Neon under A8
//===----------------------------------------------------------------------===//
// ARM special operands.
//
// ARM imod and iflag operands, used only by the CPS instruction.
def imod_op : Operand<i32> {
let PrintMethod = "printCPSIMod";
}
def ProcIFlagsOperand : AsmOperandClass {
let Name = "ProcIFlags";
let ParserMethod = "parseProcIFlagsOperand";
}
def iflags_op : Operand<i32> {
let PrintMethod = "printCPSIFlag";
let ParserMatchClass = ProcIFlagsOperand;
}
// ARM Predicate operand. Default to 14 = always (AL). Second part is CC
// register whose default is 0 (no register).
def CondCodeOperand : AsmOperandClass { let Name = "CondCode"; }
def pred : PredicateOperand<OtherVT, (ops i32imm, i32imm),
(ops (i32 14), (i32 zero_reg))> {
let PrintMethod = "printPredicateOperand";
let ParserMatchClass = CondCodeOperand;
let DecoderMethod = "DecodePredicateOperand";
}
// Selectable predicate operand for CMOV instructions. We can't use a normal
// predicate because the default values interfere with instruction selection. In
// all other respects it is identical though: pseudo-instruction expansion
// relies on the MachineOperands being compatible.
def cmovpred : Operand<i32>, PredicateOp,
ComplexPattern<i32, 2, "SelectCMOVPred"> {
let MIOperandInfo = (ops i32imm, i32imm);
let PrintMethod = "printPredicateOperand";
}
// Conditional code result for instructions whose 's' bit is set, e.g. subs.
def CCOutOperand : AsmOperandClass { let Name = "CCOut"; }
def cc_out : OptionalDefOperand<OtherVT, (ops CCR), (ops (i32 zero_reg))> {
let EncoderMethod = "getCCOutOpValue";
let PrintMethod = "printSBitModifierOperand";
let ParserMatchClass = CCOutOperand;
let DecoderMethod = "DecodeCCOutOperand";
}
// Same as cc_out except it defaults to setting CPSR.
def s_cc_out : OptionalDefOperand<OtherVT, (ops CCR), (ops (i32 CPSR))> {
let EncoderMethod = "getCCOutOpValue";
let PrintMethod = "printSBitModifierOperand";
let ParserMatchClass = CCOutOperand;
let DecoderMethod = "DecodeCCOutOperand";
}
// ARM special operands for disassembly only.
//
def SetEndAsmOperand : ImmAsmOperand {
let Name = "SetEndImm";
let ParserMethod = "parseSetEndImm";
}
def setend_op : Operand<i32> {
let PrintMethod = "printSetendOperand";
let ParserMatchClass = SetEndAsmOperand;
}
def MSRMaskOperand : AsmOperandClass {
let Name = "MSRMask";
let ParserMethod = "parseMSRMaskOperand";
}
def msr_mask : Operand<i32> {
let PrintMethod = "printMSRMaskOperand";
let DecoderMethod = "DecodeMSRMask";
let ParserMatchClass = MSRMaskOperand;
}
def BankedRegOperand : AsmOperandClass {
let Name = "BankedReg";
let ParserMethod = "parseBankedRegOperand";
}
def banked_reg : Operand<i32> {
let PrintMethod = "printBankedRegOperand";
let DecoderMethod = "DecodeBankedReg";
let ParserMatchClass = BankedRegOperand;
}
// Shift Right Immediate - A shift right immediate is encoded differently from
// other shift immediates. The imm6 field is encoded like so:
//
// Offset Encoding
// 8 imm6<5:3> = '001', 8 - <imm> is encoded in imm6<2:0>
// 16 imm6<5:4> = '01', 16 - <imm> is encoded in imm6<3:0>
// 32 imm6<5> = '1', 32 - <imm> is encoded in imm6<4:0>
// 64 64 - <imm> is encoded in imm6<5:0>
def shr_imm8_asm_operand : ImmAsmOperand { let Name = "ShrImm8"; }
def shr_imm8 : Operand<i32>, ImmLeaf<i32, [{ return Imm > 0 && Imm <= 8; }]> {
let EncoderMethod = "getShiftRight8Imm";
let DecoderMethod = "DecodeShiftRight8Imm";
let ParserMatchClass = shr_imm8_asm_operand;
}
def shr_imm16_asm_operand : ImmAsmOperand { let Name = "ShrImm16"; }
def shr_imm16 : Operand<i32>, ImmLeaf<i32, [{ return Imm > 0 && Imm <= 16; }]> {
let EncoderMethod = "getShiftRight16Imm";
let DecoderMethod = "DecodeShiftRight16Imm";
let ParserMatchClass = shr_imm16_asm_operand;
}
def shr_imm32_asm_operand : ImmAsmOperand { let Name = "ShrImm32"; }
def shr_imm32 : Operand<i32>, ImmLeaf<i32, [{ return Imm > 0 && Imm <= 32; }]> {
let EncoderMethod = "getShiftRight32Imm";
let DecoderMethod = "DecodeShiftRight32Imm";
let ParserMatchClass = shr_imm32_asm_operand;
}
def shr_imm64_asm_operand : ImmAsmOperand { let Name = "ShrImm64"; }
def shr_imm64 : Operand<i32>, ImmLeaf<i32, [{ return Imm > 0 && Imm <= 64; }]> {
let EncoderMethod = "getShiftRight64Imm";
let DecoderMethod = "DecodeShiftRight64Imm";
let ParserMatchClass = shr_imm64_asm_operand;
}
//===----------------------------------------------------------------------===//
// ARM Assembler alias templates.
//
class ARMInstAlias<string Asm, dag Result, bit Emit = 0b1>
: InstAlias<Asm, Result, Emit>, Requires<[IsARM]>;
class tInstAlias<string Asm, dag Result, bit Emit = 0b1>
: InstAlias<Asm, Result, Emit>, Requires<[IsThumb]>;
class t2InstAlias<string Asm, dag Result, bit Emit = 0b1>
: InstAlias<Asm, Result, Emit>, Requires<[IsThumb2]>;
class VFP2InstAlias<string Asm, dag Result, bit Emit = 0b1>
: InstAlias<Asm, Result, Emit>, Requires<[HasVFP2]>;
class VFP2DPInstAlias<string Asm, dag Result, bit Emit = 0b1>
: InstAlias<Asm, Result, Emit>, Requires<[HasVFP2,HasDPVFP]>;
class VFP3InstAlias<string Asm, dag Result, bit Emit = 0b1>
: InstAlias<Asm, Result, Emit>, Requires<[HasVFP3]>;
class NEONInstAlias<string Asm, dag Result, bit Emit = 0b1>
: InstAlias<Asm, Result, Emit>, Requires<[HasNEON]>;
class VFP2MnemonicAlias<string src, string dst> : MnemonicAlias<src, dst>,
Requires<[HasVFP2]>;
class NEONMnemonicAlias<string src, string dst> : MnemonicAlias<src, dst>,
Requires<[HasNEON]>;
//===----------------------------------------------------------------------===//
// ARM Instruction templates.
//
class InstTemplate<AddrMode am, int sz, IndexMode im,
Format f, Domain d, string cstr, InstrItinClass itin>
: Instruction {
let Namespace = "ARM";
AddrMode AM = am;
int Size = sz;
IndexMode IM = im;
bits<2> IndexModeBits = IM.Value;
Format F = f;
bits<6> Form = F.Value;
Domain D = d;
bit isUnaryDataProc = 0;
bit canXformTo16Bit = 0;
// The instruction is a 16-bit flag setting Thumb instruction. Used
// by the parser to determine whether to require the 'S' suffix on the
// mnemonic (when not in an IT block) or preclude it (when in an IT block).
bit thumbArithFlagSetting = 0;
// If this is a pseudo instruction, mark it isCodeGenOnly.
let isCodeGenOnly = !eq(!cast<string>(f), "Pseudo");
// The layout of TSFlags should be kept in sync with ARMBaseInfo.h.
let TSFlags{4-0} = AM.Value;
let TSFlags{6-5} = IndexModeBits;
let TSFlags{12-7} = Form;
let TSFlags{13} = isUnaryDataProc;
let TSFlags{14} = canXformTo16Bit;
let TSFlags{17-15} = D.Value;
let TSFlags{18} = thumbArithFlagSetting;
let Constraints = cstr;
let Itinerary = itin;
}
class Encoding {
field bits<32> Inst;
// Mask of bits that cause an encoding to be UNPREDICTABLE.
// If a bit is set, then if the corresponding bit in the
// target encoding differs from its value in the "Inst" field,
// the instruction is UNPREDICTABLE (SoftFail in abstract parlance).
field bits<32> Unpredictable = 0;
// SoftFail is the generic name for this field, but we alias it so
// as to make it more obvious what it means in ARM-land.
field bits<32> SoftFail = Unpredictable;
}
class InstARM<AddrMode am, int sz, IndexMode im,
Format f, Domain d, string cstr, InstrItinClass itin>
: InstTemplate<am, sz, im, f, d, cstr, itin>, Encoding {
let DecoderNamespace = "ARM";
}
// This Encoding-less class is used by Thumb1 to specify the encoding bits later
// on by adding flavors to specific instructions.
class InstThumb<AddrMode am, int sz, IndexMode im,
Format f, Domain d, string cstr, InstrItinClass itin>
: InstTemplate<am, sz, im, f, d, cstr, itin> {
let DecoderNamespace = "Thumb";
}
// Pseudo-instructions for alternate assembly syntax (never used by codegen).
// These are aliases that require C++ handling to convert to the target
// instruction, while InstAliases can be handled directly by tblgen.
class AsmPseudoInst<string asm, dag iops, dag oops = (outs)>
: InstTemplate<AddrModeNone, 0, IndexModeNone, Pseudo, GenericDomain,
"", NoItinerary> {
let OutOperandList = oops;
let InOperandList = iops;
let Pattern = [];
let isCodeGenOnly = 0; // So we get asm matcher for it.
let AsmString = asm;
let isPseudo = 1;
}
class ARMAsmPseudo<string asm, dag iops, dag oops = (outs)>
: AsmPseudoInst<asm, iops, oops>, Requires<[IsARM]>;
class tAsmPseudo<string asm, dag iops, dag oops = (outs)>
: AsmPseudoInst<asm, iops, oops>, Requires<[IsThumb]>;
class t2AsmPseudo<string asm, dag iops, dag oops = (outs)>
: AsmPseudoInst<asm, iops, oops>, Requires<[IsThumb2]>;
class VFP2AsmPseudo<string asm, dag iops, dag oops = (outs)>
: AsmPseudoInst<asm, iops, oops>, Requires<[HasVFP2]>;
class NEONAsmPseudo<string asm, dag iops, dag oops = (outs)>
: AsmPseudoInst<asm, iops, oops>, Requires<[HasNEON]>;
// Pseudo instructions for the code generator.
class PseudoInst<dag oops, dag iops, InstrItinClass itin, list<dag> pattern>
: InstTemplate<AddrModeNone, 0, IndexModeNone, Pseudo,
GenericDomain, "", itin> {
let OutOperandList = oops;
let InOperandList = iops;
let Pattern = pattern;
let isCodeGenOnly = 1;
let isPseudo = 1;
}
// PseudoInst that's ARM-mode only.
class ARMPseudoInst<dag oops, dag iops, int sz, InstrItinClass itin,
list<dag> pattern>
: PseudoInst<oops, iops, itin, pattern> {
let Size = sz;
list<Predicate> Predicates = [IsARM];
}
// PseudoInst that's Thumb-mode only.
class tPseudoInst<dag oops, dag iops, int sz, InstrItinClass itin,
list<dag> pattern>
: PseudoInst<oops, iops, itin, pattern> {
let Size = sz;
list<Predicate> Predicates = [IsThumb];
}
// PseudoInst that's Thumb2-mode only.
class t2PseudoInst<dag oops, dag iops, int sz, InstrItinClass itin,
list<dag> pattern>
: PseudoInst<oops, iops, itin, pattern> {
let Size = sz;
list<Predicate> Predicates = [IsThumb2];
}
class ARMPseudoExpand<dag oops, dag iops, int sz,
InstrItinClass itin, list<dag> pattern,
dag Result>
: ARMPseudoInst<oops, iops, sz, itin, pattern>,
PseudoInstExpansion<Result>;
class tPseudoExpand<dag oops, dag iops, int sz,
InstrItinClass itin, list<dag> pattern,
dag Result>
: tPseudoInst<oops, iops, sz, itin, pattern>,
PseudoInstExpansion<Result>;
class t2PseudoExpand<dag oops, dag iops, int sz,
InstrItinClass itin, list<dag> pattern,
dag Result>
: t2PseudoInst<oops, iops, sz, itin, pattern>,
PseudoInstExpansion<Result>;
// Almost all ARM instructions are predicable.
class I<dag oops, dag iops, AddrMode am, int sz,
IndexMode im, Format f, InstrItinClass itin,
string opc, string asm, string cstr,
list<dag> pattern>
: InstARM<am, sz, im, f, GenericDomain, cstr, itin> {
bits<4> p;
let Inst{31-28} = p;
let OutOperandList = oops;
let InOperandList = !con(iops, (ins pred:$p));
let AsmString = !strconcat(opc, "${p}", asm);
let Pattern = pattern;
list<Predicate> Predicates = [IsARM];
}
// A few are not predicable
class InoP<dag oops, dag iops, AddrMode am, int sz,
IndexMode im, Format f, InstrItinClass itin,
string opc, string asm, string cstr,
list<dag> pattern>
: InstARM<am, sz, im, f, GenericDomain, cstr, itin> {
let OutOperandList = oops;
let InOperandList = iops;
let AsmString = !strconcat(opc, asm);
let Pattern = pattern;
let isPredicable = 0;
list<Predicate> Predicates = [IsARM];
}
// Same as I except it can optionally modify CPSR. Note it's modeled as an input
// operand since by default it's a zero register. It will become an implicit def
// once it's "flipped".
class sI<dag oops, dag iops, AddrMode am, int sz,
IndexMode im, Format f, InstrItinClass itin,
string opc, string asm, string cstr,
list<dag> pattern>
: InstARM<am, sz, im, f, GenericDomain, cstr, itin> {
bits<4> p; // Predicate operand
bits<1> s; // condition-code set flag ('1' if the insn should set the flags)
let Inst{31-28} = p;
let Inst{20} = s;
let OutOperandList = oops;
let InOperandList = !con(iops, (ins pred:$p, cc_out:$s));
let AsmString = !strconcat(opc, "${s}${p}", asm);
let Pattern = pattern;
list<Predicate> Predicates = [IsARM];
}
// Special cases
class XI<dag oops, dag iops, AddrMode am, int sz,
IndexMode im, Format f, InstrItinClass itin,
string asm, string cstr, list<dag> pattern>
: InstARM<am, sz, im, f, GenericDomain, cstr, itin> {
let OutOperandList = oops;
let InOperandList = iops;
let AsmString = asm;
let Pattern = pattern;
list<Predicate> Predicates = [IsARM];
}
class AI<dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, 4, IndexModeNone, f, itin,
opc, asm, "", pattern>;
class AsI<dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: sI<oops, iops, AddrModeNone, 4, IndexModeNone, f, itin,
opc, asm, "", pattern>;
class AXI<dag oops, dag iops, Format f, InstrItinClass itin,
string asm, list<dag> pattern>
: XI<oops, iops, AddrModeNone, 4, IndexModeNone, f, itin,
asm, "", pattern>;
class AXIM<dag oops, dag iops, AddrMode am, Format f, InstrItinClass itin,
string asm, list<dag> pattern>
: XI<oops, iops, am, 4, IndexModeNone, f, itin,
asm, "", pattern>;
class AInoP<dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: InoP<oops, iops, AddrModeNone, 4, IndexModeNone, f, itin,
opc, asm, "", pattern>;
// Ctrl flow instructions
class ABI<bits<4> opcod, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, 4, IndexModeNone, BrFrm, itin,
opc, asm, "", pattern> {
let Inst{27-24} = opcod;
}
class ABXI<bits<4> opcod, dag oops, dag iops, InstrItinClass itin,
string asm, list<dag> pattern>
: XI<oops, iops, AddrModeNone, 4, IndexModeNone, BrFrm, itin,
asm, "", pattern> {
let Inst{27-24} = opcod;
}
// BR_JT instructions
class JTI<dag oops, dag iops, InstrItinClass itin,
string asm, list<dag> pattern>
: XI<oops, iops, AddrModeNone, 0, IndexModeNone, BrMiscFrm, itin,
asm, "", pattern>;
class AIldr_ex_or_acq<bits<2> opcod, bits<2> opcod2, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, 4, IndexModeNone, LdStExFrm, itin,
opc, asm, "", pattern> {
bits<4> Rt;
bits<4> addr;
let Inst{27-23} = 0b00011;
let Inst{22-21} = opcod;
let Inst{20} = 1;
let Inst{19-16} = addr;
let Inst{15-12} = Rt;
let Inst{11-10} = 0b11;
let Inst{9-8} = opcod2;
let Inst{7-0} = 0b10011111;
}
class AIstr_ex_or_rel<bits<2> opcod, bits<2> opcod2, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, 4, IndexModeNone, LdStExFrm, itin,
opc, asm, "", pattern> {
bits<4> Rt;
bits<4> addr;
let Inst{27-23} = 0b00011;
let Inst{22-21} = opcod;
let Inst{20} = 0;
let Inst{19-16} = addr;
let Inst{11-10} = 0b11;
let Inst{9-8} = opcod2;
let Inst{7-4} = 0b1001;
let Inst{3-0} = Rt;
}
// Atomic load/store instructions
class AIldrex<bits<2> opcod, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: AIldr_ex_or_acq<opcod, 0b11, oops, iops, itin, opc, asm, pattern>;
class AIstrex<bits<2> opcod, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: AIstr_ex_or_rel<opcod, 0b11, oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
let Inst{15-12} = Rd;
}
// Exclusive load/store instructions
class AIldaex<bits<2> opcod, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: AIldr_ex_or_acq<opcod, 0b10, oops, iops, itin, opc, asm, pattern>,
Requires<[IsARM, HasV8]>;
class AIstlex<bits<2> opcod, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: AIstr_ex_or_rel<opcod, 0b10, oops, iops, itin, opc, asm, pattern>,
Requires<[IsARM, HasV8]> {
bits<4> Rd;
let Inst{15-12} = Rd;
}
class AIswp<bit b, dag oops, dag iops, string opc, list<dag> pattern>
: AI<oops, iops, MiscFrm, NoItinerary, opc, "\t$Rt, $Rt2, $addr", pattern> {
bits<4> Rt;
bits<4> Rt2;
bits<4> addr;
let Inst{27-23} = 0b00010;
let Inst{22} = b;
let Inst{21-20} = 0b00;
let Inst{19-16} = addr;
let Inst{15-12} = Rt;
let Inst{11-4} = 0b00001001;
let Inst{3-0} = Rt2;
let Unpredictable{11-8} = 0b1111;
let DecoderMethod = "DecodeSwap";
}
// Acquire/Release load/store instructions
class AIldracq<bits<2> opcod, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: AIldr_ex_or_acq<opcod, 0b00, oops, iops, itin, opc, asm, pattern>,
Requires<[IsARM, HasV8]>;
class AIstrrel<bits<2> opcod, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: AIstr_ex_or_rel<opcod, 0b00, oops, iops, itin, opc, asm, pattern>,
Requires<[IsARM, HasV8]> {
let Inst{15-12} = 0b1111;
}
// addrmode1 instructions
class AI1<bits<4> opcod, dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrMode1, 4, IndexModeNone, f, itin,
opc, asm, "", pattern> {
let Inst{24-21} = opcod;
let Inst{27-26} = 0b00;
}
class AsI1<bits<4> opcod, dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: sI<oops, iops, AddrMode1, 4, IndexModeNone, f, itin,
opc, asm, "", pattern> {
let Inst{24-21} = opcod;
let Inst{27-26} = 0b00;
}
class AXI1<bits<4> opcod, dag oops, dag iops, Format f, InstrItinClass itin,
string asm, list<dag> pattern>
: XI<oops, iops, AddrMode1, 4, IndexModeNone, f, itin,
asm, "", pattern> {
let Inst{24-21} = opcod;
let Inst{27-26} = 0b00;
}
// loads
// LDR/LDRB/STR/STRB/...
class AI2ldst<bits<3> op, bit isLd, bit isByte, dag oops, dag iops, AddrMode am,
Format f, InstrItinClass itin, string opc, string asm,
list<dag> pattern>
: I<oops, iops, am, 4, IndexModeNone, f, itin, opc, asm,
"", pattern> {
let Inst{27-25} = op;
let Inst{24} = 1; // 24 == P
// 23 == U
let Inst{22} = isByte;
let Inst{21} = 0; // 21 == W
let Inst{20} = isLd;
}
// Indexed load/stores
class AI2ldstidx<bit isLd, bit isByte, bit isPre, dag oops, dag iops,
IndexMode im, Format f, InstrItinClass itin, string opc,
string asm, string cstr, list<dag> pattern>
: I<oops, iops, AddrMode2, 4, im, f, itin,
opc, asm, cstr, pattern> {
bits<4> Rt;
let Inst{27-26} = 0b01;
let Inst{24} = isPre; // P bit
let Inst{22} = isByte; // B bit
let Inst{21} = isPre; // W bit
let Inst{20} = isLd; // L bit
let Inst{15-12} = Rt;
}
class AI2stridx_reg<bit isByte, bit isPre, dag oops, dag iops,
IndexMode im, Format f, InstrItinClass itin, string opc,
string asm, string cstr, list<dag> pattern>
: AI2ldstidx<0, isByte, isPre, oops, iops, im, f, itin, opc, asm, cstr,
pattern> {
// AM2 store w/ two operands: (GPR, am2offset)
// {12} isAdd
// {11-0} imm12/Rm
bits<14> offset;
bits<4> Rn;
let Inst{25} = 1;
let Inst{23} = offset{12};
let Inst{19-16} = Rn;
let Inst{11-5} = offset{11-5};
let Inst{4} = 0;
let Inst{3-0} = offset{3-0};
}
class AI2stridx_imm<bit isByte, bit isPre, dag oops, dag iops,
IndexMode im, Format f, InstrItinClass itin, string opc,
string asm, string cstr, list<dag> pattern>
: AI2ldstidx<0, isByte, isPre, oops, iops, im, f, itin, opc, asm, cstr,
pattern> {
// AM2 store w/ two operands: (GPR, am2offset)
// {12} isAdd
// {11-0} imm12/Rm
bits<14> offset;
bits<4> Rn;
let Inst{25} = 0;
let Inst{23} = offset{12};
let Inst{19-16} = Rn;
let Inst{11-0} = offset{11-0};
}
// FIXME: Merge with the above class when addrmode2 gets used for STR, STRB
// but for now use this class for STRT and STRBT.
class AI2stridxT<bit isByte, bit isPre, dag oops, dag iops,
IndexMode im, Format f, InstrItinClass itin, string opc,
string asm, string cstr, list<dag> pattern>
: AI2ldstidx<0, isByte, isPre, oops, iops, im, f, itin, opc, asm, cstr,
pattern> {
// AM2 store w/ two operands: (GPR, am2offset)
// {17-14} Rn
// {13} 1 == Rm, 0 == imm12
// {12} isAdd
// {11-0} imm12/Rm
bits<18> addr;
let Inst{25} = addr{13};
let Inst{23} = addr{12};
let Inst{19-16} = addr{17-14};
let Inst{11-0} = addr{11-0};
}
// addrmode3 instructions
class AI3ld<bits<4> op, bit op20, dag oops, dag iops, Format f,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrMode3, 4, IndexModeNone, f, itin,
opc, asm, "", pattern> {
bits<14> addr;
bits<4> Rt;
let Inst{27-25} = 0b000;
let Inst{24} = 1; // P bit
let Inst{23} = addr{8}; // U bit
let Inst{22} = addr{13}; // 1 == imm8, 0 == Rm
let Inst{21} = 0; // W bit
let Inst{20} = op20; // L bit
let Inst{19-16} = addr{12-9}; // Rn
let Inst{15-12} = Rt; // Rt
let Inst{11-8} = addr{7-4}; // imm7_4/zero
let Inst{7-4} = op;
let Inst{3-0} = addr{3-0}; // imm3_0/Rm
let DecoderMethod = "DecodeAddrMode3Instruction";
}
class AI3ldstidx<bits<4> op, bit op20, bit isPre, dag oops, dag iops,
IndexMode im, Format f, InstrItinClass itin, string opc,
string asm, string cstr, list<dag> pattern>
: I<oops, iops, AddrMode3, 4, im, f, itin,
opc, asm, cstr, pattern> {
bits<4> Rt;
let Inst{27-25} = 0b000;
let Inst{24} = isPre; // P bit
let Inst{21} = isPre; // W bit
let Inst{20} = op20; // L bit
let Inst{15-12} = Rt; // Rt
let Inst{7-4} = op;
}
// FIXME: Merge with the above class when addrmode2 gets used for LDR, LDRB
// but for now use this class for LDRSBT, LDRHT, LDSHT.
class AI3ldstidxT<bits<4> op, bit isLoad, dag oops, dag iops,
IndexMode im, Format f, InstrItinClass itin, string opc,
string asm, string cstr, list<dag> pattern>
: I<oops, iops, AddrMode3, 4, im, f, itin, opc, asm, cstr, pattern> {
// {13} 1 == imm8, 0 == Rm
// {12-9} Rn
// {8} isAdd
// {7-4} imm7_4/zero
// {3-0} imm3_0/Rm
bits<4> addr;
bits<4> Rt;
let Inst{27-25} = 0b000;
let Inst{24} = 0; // P bit
let Inst{21} = 1;
let Inst{20} = isLoad; // L bit
let Inst{19-16} = addr; // Rn
let Inst{15-12} = Rt; // Rt
let Inst{7-4} = op;
}
// stores
class AI3str<bits<4> op, dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrMode3, 4, IndexModeNone, f, itin,
opc, asm, "", pattern> {
bits<14> addr;
bits<4> Rt;
let Inst{27-25} = 0b000;
let Inst{24} = 1; // P bit
let Inst{23} = addr{8}; // U bit
let Inst{22} = addr{13}; // 1 == imm8, 0 == Rm
let Inst{21} = 0; // W bit
let Inst{20} = 0; // L bit
let Inst{19-16} = addr{12-9}; // Rn
let Inst{15-12} = Rt; // Rt
let Inst{11-8} = addr{7-4}; // imm7_4/zero
let Inst{7-4} = op;
let Inst{3-0} = addr{3-0}; // imm3_0/Rm
let DecoderMethod = "DecodeAddrMode3Instruction";
}
// addrmode4 instructions
class AXI4<dag oops, dag iops, IndexMode im, Format f, InstrItinClass itin,
string asm, string cstr, list<dag> pattern>
: XI<oops, iops, AddrMode4, 4, im, f, itin, asm, cstr, pattern> {
bits<4> p;
bits<16> regs;
bits<4> Rn;
let Inst{31-28} = p;
let Inst{27-25} = 0b100;
let Inst{22} = 0; // S bit
let Inst{19-16} = Rn;
let Inst{15-0} = regs;
}
// Unsigned multiply, multiply-accumulate instructions.
class AMul1I<bits<7> opcod, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, 4, IndexModeNone, MulFrm, itin,
opc, asm, "", pattern> {
let Inst{7-4} = 0b1001;
let Inst{20} = 0; // S bit
let Inst{27-21} = opcod;
}
class AsMul1I<bits<7> opcod, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: sI<oops, iops, AddrModeNone, 4, IndexModeNone, MulFrm, itin,
opc, asm, "", pattern> {
let Inst{7-4} = 0b1001;
let Inst{27-21} = opcod;
}
// Most significant word multiply
class AMul2I<bits<7> opcod, bits<4> opc7_4, dag oops, dag iops,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, 4, IndexModeNone, MulFrm, itin,
opc, asm, "", pattern> {
bits<4> Rd;
bits<4> Rn;
bits<4> Rm;
let Inst{7-4} = opc7_4;
let Inst{20} = 1;
let Inst{27-21} = opcod;
let Inst{19-16} = Rd;
let Inst{11-8} = Rm;
let Inst{3-0} = Rn;
}
// MSW multiple w/ Ra operand
class AMul2Ia<bits<7> opcod, bits<4> opc7_4, dag oops, dag iops,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: AMul2I<opcod, opc7_4, oops, iops, itin, opc, asm, pattern> {
bits<4> Ra;
let Inst{15-12} = Ra;
}
// SMUL<x><y> / SMULW<y> / SMLA<x><y> / SMLAW<x><y>
class AMulxyIbase<bits<7> opcod, bits<2> bit6_5, dag oops, dag iops,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, 4, IndexModeNone, MulFrm, itin,
opc, asm, "", pattern> {
bits<4> Rn;
bits<4> Rm;
let Inst{4} = 0;
let Inst{7} = 1;
let Inst{20} = 0;
let Inst{27-21} = opcod;
let Inst{6-5} = bit6_5;
let Inst{11-8} = Rm;
let Inst{3-0} = Rn;
}
class AMulxyI<bits<7> opcod, bits<2> bit6_5, dag oops, dag iops,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: AMulxyIbase<opcod, bit6_5, oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
let Inst{19-16} = Rd;
}
// AMulxyI with Ra operand
class AMulxyIa<bits<7> opcod, bits<2> bit6_5, dag oops, dag iops,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: AMulxyI<opcod, bit6_5, oops, iops, itin, opc, asm, pattern> {
bits<4> Ra;
let Inst{15-12} = Ra;
}
// SMLAL*
class AMulxyI64<bits<7> opcod, bits<2> bit6_5, dag oops, dag iops,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: AMulxyIbase<opcod, bit6_5, oops, iops, itin, opc, asm, pattern> {
bits<4> RdLo;
bits<4> RdHi;
let Inst{19-16} = RdHi;
let Inst{15-12} = RdLo;
}
// Extend instructions.
class AExtI<bits<8> opcod, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, 4, IndexModeNone, ExtFrm, itin,
opc, asm, "", pattern> {
// All AExtI instructions have Rd and Rm register operands.
bits<4> Rd;
bits<4> Rm;
let Inst{15-12} = Rd;
let Inst{3-0} = Rm;
let Inst{7-4} = 0b0111;
let Inst{9-8} = 0b00;
let Inst{27-20} = opcod;
let Unpredictable{9-8} = 0b11;
}
// Misc Arithmetic instructions.
class AMiscA1I<bits<8> opcod, bits<4> opc7_4, dag oops, dag iops,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, 4, IndexModeNone, ArithMiscFrm, itin,
opc, asm, "", pattern> {
bits<4> Rd;
bits<4> Rm;
let Inst{27-20} = opcod;
let Inst{19-16} = 0b1111;
let Inst{15-12} = Rd;
let Inst{11-8} = 0b1111;
let Inst{7-4} = opc7_4;
let Inst{3-0} = Rm;
}
// Division instructions.
class ADivA1I<bits<3> opcod, dag oops, dag iops,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, 4, IndexModeNone, ArithMiscFrm, itin,
opc, asm, "", pattern> {
bits<4> Rd;
bits<4> Rn;
bits<4> Rm;
let Inst{27-23} = 0b01110;
let Inst{22-20} = opcod;
let Inst{19-16} = Rd;
let Inst{15-12} = 0b1111;
let Inst{11-8} = Rm;
let Inst{7-4} = 0b0001;
let Inst{3-0} = Rn;
}
// PKH instructions
def PKHLSLAsmOperand : ImmAsmOperand {
let Name = "PKHLSLImm";
let ParserMethod = "parsePKHLSLImm";
}
def pkh_lsl_amt: Operand<i32>, ImmLeaf<i32, [{ return Imm >= 0 && Imm < 32; }]>{
let PrintMethod = "printPKHLSLShiftImm";
let ParserMatchClass = PKHLSLAsmOperand;
}
def PKHASRAsmOperand : AsmOperandClass {
let Name = "PKHASRImm";
let ParserMethod = "parsePKHASRImm";
}
def pkh_asr_amt: Operand<i32>, ImmLeaf<i32, [{ return Imm > 0 && Imm <= 32; }]>{
let PrintMethod = "printPKHASRShiftImm";
let ParserMatchClass = PKHASRAsmOperand;
}
class APKHI<bits<8> opcod, bit tb, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, 4, IndexModeNone, ArithMiscFrm, itin,
opc, asm, "", pattern> {
bits<4> Rd;
bits<4> Rn;
bits<4> Rm;
bits<5> sh;
let Inst{27-20} = opcod;
let Inst{19-16} = Rn;
let Inst{15-12} = Rd;
let Inst{11-7} = sh;
let Inst{6} = tb;
let Inst{5-4} = 0b01;
let Inst{3-0} = Rm;
}
//===----------------------------------------------------------------------===//
// ARMPat - Same as Pat<>, but requires that the compiler be in ARM mode.
class ARMPat<dag pattern, dag result> : Pat<pattern, result> {
list<Predicate> Predicates = [IsARM];
}
class ARMV5TPat<dag pattern, dag result> : Pat<pattern, result> {
list<Predicate> Predicates = [IsARM, HasV5T];
}
class ARMV5TEPat<dag pattern, dag result> : Pat<pattern, result> {
list<Predicate> Predicates = [IsARM, HasV5TE];
}
// ARMV5MOPat - Same as ARMV5TEPat with UseMulOps.
class ARMV5MOPat<dag pattern, dag result> : Pat<pattern, result> {
list<Predicate> Predicates = [IsARM, HasV5TE, UseMulOps];
}
class ARMV6Pat<dag pattern, dag result> : Pat<pattern, result> {
list<Predicate> Predicates = [IsARM, HasV6];
}
//===----------------------------------------------------------------------===//
// Thumb Instruction Format Definitions.
//
class ThumbI<dag oops, dag iops, AddrMode am, int sz,
InstrItinClass itin, string asm, string cstr, list<dag> pattern>
: InstThumb<am, sz, IndexModeNone, ThumbFrm, GenericDomain, cstr, itin> {
let OutOperandList = oops;
let InOperandList = iops;
let AsmString = asm;
let Pattern = pattern;
list<Predicate> Predicates = [IsThumb];
}
// TI - Thumb instruction.
class TI<dag oops, dag iops, InstrItinClass itin, string asm, list<dag> pattern>
: ThumbI<oops, iops, AddrModeNone, 2, itin, asm, "", pattern>;
// Two-address instructions
class TIt<dag oops, dag iops, InstrItinClass itin, string asm,
list<dag> pattern>
: ThumbI<oops, iops, AddrModeNone, 2, itin, asm, "$lhs = $dst",
pattern>;
// tBL, tBX 32-bit instructions
class TIx2<bits<5> opcod1, bits<2> opcod2, bit opcod3,
dag oops, dag iops, InstrItinClass itin, string asm,
list<dag> pattern>
: ThumbI<oops, iops, AddrModeNone, 4, itin, asm, "", pattern>,
Encoding {
let Inst{31-27} = opcod1;
let Inst{15-14} = opcod2;
let Inst{12} = opcod3;
}
// BR_JT instructions
class TJTI<dag oops, dag iops, InstrItinClass itin, string asm,
list<dag> pattern>
: ThumbI<oops, iops, AddrModeNone, 0, itin, asm, "", pattern>;
// Thumb1 only
class Thumb1I<dag oops, dag iops, AddrMode am, int sz,
InstrItinClass itin, string asm, string cstr, list<dag> pattern>
: InstThumb<am, sz, IndexModeNone, ThumbFrm, GenericDomain, cstr, itin> {
let OutOperandList = oops;
let InOperandList = iops;
let AsmString = asm;
let Pattern = pattern;
list<Predicate> Predicates = [IsThumb, IsThumb1Only];
}
class T1I<dag oops, dag iops, InstrItinClass itin,
string asm, list<dag> pattern>
: Thumb1I<oops, iops, AddrModeNone, 2, itin, asm, "", pattern>;
class T1Ix2<dag oops, dag iops, InstrItinClass itin,
string asm, list<dag> pattern>
: Thumb1I<oops, iops, AddrModeNone, 4, itin, asm, "", pattern>;
// Two-address instructions
class T1It<dag oops, dag iops, InstrItinClass itin,
string asm, string cstr, list<dag> pattern>
: Thumb1I<oops, iops, AddrModeNone, 2, itin,
asm, cstr, pattern>;
// Thumb1 instruction that can either be predicated or set CPSR.
class Thumb1sI<dag oops, dag iops, AddrMode am, int sz,
InstrItinClass itin,
string opc, string asm, string cstr, list<dag> pattern>
: InstThumb<am, sz, IndexModeNone, ThumbFrm, GenericDomain, cstr, itin> {
let OutOperandList = !con(oops, (outs s_cc_out:$s));
let InOperandList = !con(iops, (ins pred:$p));
let AsmString = !strconcat(opc, "${s}${p}", asm);
let Pattern = pattern;
let thumbArithFlagSetting = 1;
list<Predicate> Predicates = [IsThumb, IsThumb1Only];
let DecoderNamespace = "ThumbSBit";
}
class T1sI<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: Thumb1sI<oops, iops, AddrModeNone, 2, itin, opc, asm, "", pattern>;
// Two-address instructions
class T1sIt<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: Thumb1sI<oops, iops, AddrModeNone, 2, itin, opc, asm,
"$Rn = $Rdn", pattern>;
// Thumb1 instruction that can be predicated.
class Thumb1pI<dag oops, dag iops, AddrMode am, int sz,
InstrItinClass itin,
string opc, string asm, string cstr, list<dag> pattern>
: InstThumb<am, sz, IndexModeNone, ThumbFrm, GenericDomain, cstr, itin> {
let OutOperandList = oops;
let InOperandList = !con(iops, (ins pred:$p));
let AsmString = !strconcat(opc, "${p}", asm);
let Pattern = pattern;
list<Predicate> Predicates = [IsThumb, IsThumb1Only];
}
class T1pI<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: Thumb1pI<oops, iops, AddrModeNone, 2, itin, opc, asm, "", pattern>;
// Two-address instructions
class T1pIt<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: Thumb1pI<oops, iops, AddrModeNone, 2, itin, opc, asm,
"$Rn = $Rdn", pattern>;
class T1pIs<dag oops, dag iops,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: Thumb1pI<oops, iops, AddrModeT1_s, 2, itin, opc, asm, "", pattern>;
class Encoding16 : Encoding {
let Inst{31-16} = 0x0000;
}
// A6.2 16-bit Thumb instruction encoding
class T1Encoding<bits<6> opcode> : Encoding16 {
let Inst{15-10} = opcode;
}
// A6.2.1 Shift (immediate), add, subtract, move, and compare encoding.
class T1General<bits<5> opcode> : Encoding16 {
let Inst{15-14} = 0b00;
let Inst{13-9} = opcode;
}
// A6.2.2 Data-processing encoding.
class T1DataProcessing<bits<4> opcode> : Encoding16 {
let Inst{15-10} = 0b010000;
let Inst{9-6} = opcode;
}
// A6.2.3 Special data instructions and branch and exchange encoding.
class T1Special<bits<4> opcode> : Encoding16 {
let Inst{15-10} = 0b010001;
let Inst{9-6} = opcode;
}
// A6.2.4 Load/store single data item encoding.
class T1LoadStore<bits<4> opA, bits<3> opB> : Encoding16 {
let Inst{15-12} = opA;
let Inst{11-9} = opB;
}
class T1LdStSP<bits<3> opB> : T1LoadStore<0b1001, opB>; // SP relative
class T1BranchCond<bits<4> opcode> : Encoding16 {
let Inst{15-12} = opcode;
}
// Helper classes to encode Thumb1 loads and stores. For immediates, the
// following bits are used for "opA" (see A6.2.4):
//
// 0b0110 => Immediate, 4 bytes
// 0b1000 => Immediate, 2 bytes
// 0b0111 => Immediate, 1 byte
class T1pILdStEncode<bits<3> opcode, dag oops, dag iops, AddrMode am,
InstrItinClass itin, string opc, string asm,
list<dag> pattern>
: Thumb1pI<oops, iops, am, 2, itin, opc, asm, "", pattern>,
T1LoadStore<0b0101, opcode> {
bits<3> Rt;
bits<8> addr;
let Inst{8-6} = addr{5-3}; // Rm
let Inst{5-3} = addr{2-0}; // Rn
let Inst{2-0} = Rt;
}
class T1pILdStEncodeImm<bits<4> opA, bit opB, dag oops, dag iops, AddrMode am,
InstrItinClass itin, string opc, string asm,
list<dag> pattern>
: Thumb1pI<oops, iops, am, 2, itin, opc, asm, "", pattern>,
T1LoadStore<opA, {opB,?,?}> {
bits<3> Rt;
bits<8> addr;
let Inst{10-6} = addr{7-3}; // imm5
let Inst{5-3} = addr{2-0}; // Rn
let Inst{2-0} = Rt;
}
// A6.2.5 Miscellaneous 16-bit instructions encoding.
class T1Misc<bits<7> opcode> : Encoding16 {
let Inst{15-12} = 0b1011;
let Inst{11-5} = opcode;
}
// Thumb2I - Thumb2 instruction. Almost all Thumb2 instructions are predicable.
class Thumb2I<dag oops, dag iops, AddrMode am, int sz,
InstrItinClass itin,
string opc, string asm, string cstr, list<dag> pattern>
: InstARM<am, sz, IndexModeNone, ThumbFrm, GenericDomain, cstr, itin> {
let OutOperandList = oops;
let InOperandList = !con(iops, (ins pred:$p));
let AsmString = !strconcat(opc, "${p}", asm);
let Pattern = pattern;
list<Predicate> Predicates = [IsThumb2];
let DecoderNamespace = "Thumb2";
}
// Same as Thumb2I except it can optionally modify CPSR. Note it's modeled as an
// input operand since by default it's a zero register. It will become an
// implicit def once it's "flipped".
//
// FIXME: This uses unified syntax so {s} comes before {p}. We should make it
// more consistent.
class Thumb2sI<dag oops, dag iops, AddrMode am, int sz,
InstrItinClass itin,
string opc, string asm, string cstr, list<dag> pattern>
: InstARM<am, sz, IndexModeNone, ThumbFrm, GenericDomain, cstr, itin> {
bits<1> s; // condition-code set flag ('1' if the insn should set the flags)
let Inst{20} = s;
let OutOperandList = oops;
let InOperandList = !con(iops, (ins pred:$p, cc_out:$s));
let AsmString = !strconcat(opc, "${s}${p}", asm);
let Pattern = pattern;
list<Predicate> Predicates = [IsThumb2];
let DecoderNamespace = "Thumb2";
}
// Special cases
class Thumb2XI<dag oops, dag iops, AddrMode am, int sz,
InstrItinClass itin,
string asm, string cstr, list<dag> pattern>
: InstARM<am, sz, IndexModeNone, ThumbFrm, GenericDomain, cstr, itin> {
let OutOperandList = oops;
let InOperandList = iops;
let AsmString = asm;
let Pattern = pattern;
list<Predicate> Predicates = [IsThumb2];
let DecoderNamespace = "Thumb2";
}
class ThumbXI<dag oops, dag iops, AddrMode am, int sz,
InstrItinClass itin,
string asm, string cstr, list<dag> pattern>
: InstARM<am, sz, IndexModeNone, ThumbFrm, GenericDomain, cstr, itin> {
let OutOperandList = oops;
let InOperandList = iops;
let AsmString = asm;
let Pattern = pattern;
list<Predicate> Predicates = [IsThumb, IsThumb1Only];
let DecoderNamespace = "Thumb";
}
class T2I<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: Thumb2I<oops, iops, AddrModeNone, 4, itin, opc, asm, "", pattern>;
class T2Ii12<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: Thumb2I<oops, iops, AddrModeT2_i12, 4, itin, opc, asm, "",pattern>;
class T2Ii8<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: Thumb2I<oops, iops, AddrModeT2_i8, 4, itin, opc, asm, "", pattern>;
class T2Iso<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: Thumb2I<oops, iops, AddrModeT2_so, 4, itin, opc, asm, "", pattern>;
class T2Ipc<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: Thumb2I<oops, iops, AddrModeT2_pc, 4, itin, opc, asm, "", pattern>;
class T2Ii8s4<bit P, bit W, bit isLoad, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, string cstr, list<dag> pattern>
: Thumb2I<oops, iops, AddrModeT2_i8s4, 4, itin, opc, asm, cstr,
pattern> {
bits<4> Rt;
bits<4> Rt2;
bits<13> addr;
let Inst{31-25} = 0b1110100;
let Inst{24} = P;
let Inst{23} = addr{8};
let Inst{22} = 1;
let Inst{21} = W;
let Inst{20} = isLoad;
let Inst{19-16} = addr{12-9};
let Inst{15-12} = Rt{3-0};
let Inst{11-8} = Rt2{3-0};
let Inst{7-0} = addr{7-0};
}
class T2Ii8s4post<bit P, bit W, bit isLoad, dag oops, dag iops,
InstrItinClass itin, string opc, string asm, string cstr,
list<dag> pattern>
: Thumb2I<oops, iops, AddrModeT2_i8s4, 4, itin, opc, asm, cstr,
pattern> {
bits<4> Rt;
bits<4> Rt2;
bits<4> addr;
bits<9> imm;
let Inst{31-25} = 0b1110100;
let Inst{24} = P;
let Inst{23} = imm{8};
let Inst{22} = 1;
let Inst{21} = W;
let Inst{20} = isLoad;
let Inst{19-16} = addr;
let Inst{15-12} = Rt{3-0};
let Inst{11-8} = Rt2{3-0};
let Inst{7-0} = imm{7-0};
}
class T2sI<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: Thumb2sI<oops, iops, AddrModeNone, 4, itin, opc, asm, "", pattern>;
class T2XI<dag oops, dag iops, InstrItinClass itin,
string asm, list<dag> pattern>
: Thumb2XI<oops, iops, AddrModeNone, 4, itin, asm, "", pattern>;
class T2JTI<dag oops, dag iops, InstrItinClass itin,
string asm, list<dag> pattern>
: Thumb2XI<oops, iops, AddrModeNone, 0, itin, asm, "", pattern>;
// Move to/from coprocessor instructions
class T2Cop<bits<4> opc, dag oops, dag iops, string opcstr, string asm,
list<dag> pattern>
: T2I <oops, iops, NoItinerary, opcstr, asm, pattern>, Requires<[IsThumb2]> {
let Inst{31-28} = opc;
}
// Two-address instructions
class T2XIt<dag oops, dag iops, InstrItinClass itin,
string asm, string cstr, list<dag> pattern>
: Thumb2XI<oops, iops, AddrModeNone, 4, itin, asm, cstr, pattern>;
// T2Ipreldst - Thumb2 pre-indexed load / store instructions.
class T2Ipreldst<bit signed, bits<2> opcod, bit load, bit pre,
dag oops, dag iops,
AddrMode am, IndexMode im, InstrItinClass itin,
string opc, string asm, string cstr, list<dag> pattern>
: InstARM<am, 4, im, ThumbFrm, GenericDomain, cstr, itin> {
let OutOperandList = oops;
let InOperandList = !con(iops, (ins pred:$p));
let AsmString = !strconcat(opc, "${p}", asm);
let Pattern = pattern;
list<Predicate> Predicates = [IsThumb2];
let DecoderNamespace = "Thumb2";
bits<4> Rt;
bits<13> addr;
let Inst{31-27} = 0b11111;
let Inst{26-25} = 0b00;
let Inst{24} = signed;
let Inst{23} = 0;
let Inst{22-21} = opcod;
let Inst{20} = load;
let Inst{19-16} = addr{12-9};
let Inst{15-12} = Rt{3-0};
let Inst{11} = 1;
// (P, W) = (1, 1) Pre-indexed or (0, 1) Post-indexed
let Inst{10} = pre; // The P bit.
let Inst{9} = addr{8}; // Sign bit
let Inst{8} = 1; // The W bit.
let Inst{7-0} = addr{7-0};
let DecoderMethod = "DecodeT2LdStPre";
}
// T2Ipostldst - Thumb2 post-indexed load / store instructions.
class T2Ipostldst<bit signed, bits<2> opcod, bit load, bit pre,
dag oops, dag iops,
AddrMode am, IndexMode im, InstrItinClass itin,
string opc, string asm, string cstr, list<dag> pattern>
: InstARM<am, 4, im, ThumbFrm, GenericDomain, cstr, itin> {
let OutOperandList = oops;
let InOperandList = !con(iops, (ins pred:$p));
let AsmString = !strconcat(opc, "${p}", asm);
let Pattern = pattern;
list<Predicate> Predicates = [IsThumb2];
let DecoderNamespace = "Thumb2";
bits<4> Rt;
bits<4> Rn;
bits<9> offset;
let Inst{31-27} = 0b11111;
let Inst{26-25} = 0b00;
let Inst{24} = signed;
let Inst{23} = 0;
let Inst{22-21} = opcod;
let Inst{20} = load;
let Inst{19-16} = Rn;
let Inst{15-12} = Rt{3-0};
let Inst{11} = 1;
// (P, W) = (1, 1) Pre-indexed or (0, 1) Post-indexed
let Inst{10} = pre; // The P bit.
let Inst{9} = offset{8}; // Sign bit
let Inst{8} = 1; // The W bit.
let Inst{7-0} = offset{7-0};
let DecoderMethod = "DecodeT2LdStPre";
}
// Tv5Pat - Same as Pat<>, but requires V5T Thumb mode.
class Tv5Pat<dag pattern, dag result> : Pat<pattern, result> {
list<Predicate> Predicates = [IsThumb, IsThumb1Only, HasV5T];
}
// T1Pat - Same as Pat<>, but requires that the compiler be in Thumb1 mode.
class T1Pat<dag pattern, dag result> : Pat<pattern, result> {
list<Predicate> Predicates = [IsThumb, IsThumb1Only];
}
// T2v6Pat - Same as Pat<>, but requires V6T2 Thumb2 mode.
class T2v6Pat<dag pattern, dag result> : Pat<pattern, result> {
list<Predicate> Predicates = [IsThumb2, HasV6T2];
}
// T2Pat - Same as Pat<>, but requires that the compiler be in Thumb2 mode.
class T2Pat<dag pattern, dag result> : Pat<pattern, result> {
list<Predicate> Predicates = [IsThumb2];
}
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// ARM VFP Instruction templates.
//
// Almost all VFP instructions are predicable.
class VFPI<dag oops, dag iops, AddrMode am, int sz,
IndexMode im, Format f, InstrItinClass itin,
string opc, string asm, string cstr, list<dag> pattern>
: InstARM<am, sz, im, f, VFPDomain, cstr, itin> {
bits<4> p;
let Inst{31-28} = p;
let OutOperandList = oops;
let InOperandList = !con(iops, (ins pred:$p));
let AsmString = !strconcat(opc, "${p}", asm);
let Pattern = pattern;
let PostEncoderMethod = "VFPThumb2PostEncoder";
let DecoderNamespace = "VFP";
list<Predicate> Predicates = [HasVFP2];
}
// Special cases
class VFPXI<dag oops, dag iops, AddrMode am, int sz,
IndexMode im, Format f, InstrItinClass itin,
string asm, string cstr, list<dag> pattern>
: InstARM<am, sz, im, f, VFPDomain, cstr, itin> {
bits<4> p;
let Inst{31-28} = p;
let OutOperandList = oops;
let InOperandList = iops;
let AsmString = asm;
let Pattern = pattern;
let PostEncoderMethod = "VFPThumb2PostEncoder";
let DecoderNamespace = "VFP";
list<Predicate> Predicates = [HasVFP2];
}
class VFPAI<dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: VFPI<oops, iops, AddrModeNone, 4, IndexModeNone, f, itin,
opc, asm, "", pattern> {
let PostEncoderMethod = "VFPThumb2PostEncoder";
}
// ARM VFP addrmode5 loads and stores
class ADI5<bits<4> opcod1, bits<2> opcod2, dag oops, dag iops,
InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: VFPI<oops, iops, AddrMode5, 4, IndexModeNone,
VFPLdStFrm, itin, opc, asm, "", pattern> {
// Instruction operands.
bits<5> Dd;
bits<13> addr;
// Encode instruction operands.
let Inst{23} = addr{8}; // U (add = (U == '1'))
let Inst{22} = Dd{4};
let Inst{19-16} = addr{12-9}; // Rn
let Inst{15-12} = Dd{3-0};
let Inst{7-0} = addr{7-0}; // imm8
let Inst{27-24} = opcod1;
let Inst{21-20} = opcod2;
let Inst{11-9} = 0b101;
let Inst{8} = 1; // Double precision
// Loads & stores operate on both NEON and VFP pipelines.
let D = VFPNeonDomain;
}
class ASI5<bits<4> opcod1, bits<2> opcod2, dag oops, dag iops,
InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: VFPI<oops, iops, AddrMode5, 4, IndexModeNone,
VFPLdStFrm, itin, opc, asm, "", pattern> {
// Instruction operands.
bits<5> Sd;
bits<13> addr;
// Encode instruction operands.
let Inst{23} = addr{8}; // U (add = (U == '1'))
let Inst{22} = Sd{0};
let Inst{19-16} = addr{12-9}; // Rn
let Inst{15-12} = Sd{4-1};
let Inst{7-0} = addr{7-0}; // imm8
let Inst{27-24} = opcod1;
let Inst{21-20} = opcod2;
let Inst{11-9} = 0b101;
let Inst{8} = 0; // Single precision
// Loads & stores operate on both NEON and VFP pipelines.
let D = VFPNeonDomain;
}
// VFP Load / store multiple pseudo instructions.
class PseudoVFPLdStM<dag oops, dag iops, InstrItinClass itin, string cstr,
list<dag> pattern>
: InstARM<AddrMode4, 4, IndexModeNone, Pseudo, VFPNeonDomain,
cstr, itin> {
let OutOperandList = oops;
let InOperandList = !con(iops, (ins pred:$p));
let Pattern = pattern;
list<Predicate> Predicates = [HasVFP2];
}
// Load / store multiple
// Unknown precision
class AXXI4<dag oops, dag iops, IndexMode im,
string asm, string cstr, list<dag> pattern>
: VFPXI<oops, iops, AddrMode4, 4, im,
VFPLdStFrm, NoItinerary, asm, cstr, pattern> {
// Instruction operands.
bits<4> Rn;
bits<13> regs;
// Encode instruction operands.
let Inst{19-16} = Rn;
let Inst{22} = 0;
let Inst{15-12} = regs{11-8};
let Inst{7-1} = regs{7-1};
let Inst{27-25} = 0b110;
let Inst{11-8} = 0b1011;
let Inst{0} = 1;
}
// Double precision
class AXDI4<dag oops, dag iops, IndexMode im, InstrItinClass itin,
string asm, string cstr, list<dag> pattern>
: VFPXI<oops, iops, AddrMode4, 4, im,
VFPLdStMulFrm, itin, asm, cstr, pattern> {
// Instruction operands.
bits<4> Rn;
bits<13> regs;
// Encode instruction operands.
let Inst{19-16} = Rn;
let Inst{22} = regs{12};
let Inst{15-12} = regs{11-8};
let Inst{7-1} = regs{7-1};
let Inst{27-25} = 0b110;
let Inst{11-9} = 0b101;
let Inst{8} = 1; // Double precision
let Inst{0} = 0;
}
// Single Precision
class AXSI4<dag oops, dag iops, IndexMode im, InstrItinClass itin,
string asm, string cstr, list<dag> pattern>
: VFPXI<oops, iops, AddrMode4, 4, im,
VFPLdStMulFrm, itin, asm, cstr, pattern> {
// Instruction operands.
bits<4> Rn;
bits<13> regs;
// Encode instruction operands.
let Inst{19-16} = Rn;
let Inst{22} = regs{8};
let Inst{15-12} = regs{12-9};
let Inst{7-0} = regs{7-0};
let Inst{27-25} = 0b110;
let Inst{11-9} = 0b101;
let Inst{8} = 0; // Single precision
}
// Double precision, unary
class ADuI<bits<5> opcod1, bits<2> opcod2, bits<4> opcod3, bits<2> opcod4,
bit opcod5, dag oops, dag iops, InstrItinClass itin, string opc,
string asm, list<dag> pattern>
: VFPAI<oops, iops, VFPUnaryFrm, itin, opc, asm, pattern> {
// Instruction operands.
bits<5> Dd;
bits<5> Dm;
// Encode instruction operands.
let Inst{3-0} = Dm{3-0};
let Inst{5} = Dm{4};
let Inst{15-12} = Dd{3-0};
let Inst{22} = Dd{4};
let Inst{27-23} = opcod1;
let Inst{21-20} = opcod2;
let Inst{19-16} = opcod3;
let Inst{11-9} = 0b101;
let Inst{8} = 1; // Double precision
let Inst{7-6} = opcod4;
let Inst{4} = opcod5;
let Predicates = [HasVFP2, HasDPVFP];
}
// Double precision, unary, not-predicated
class ADuInp<bits<5> opcod1, bits<2> opcod2, bits<4> opcod3, bits<2> opcod4,
bit opcod5, dag oops, dag iops, InstrItinClass itin,
string asm, list<dag> pattern>
: VFPXI<oops, iops, AddrModeNone, 4, IndexModeNone, VFPUnaryFrm, itin, asm, "", pattern> {
// Instruction operands.
bits<5> Dd;
bits<5> Dm;
let Inst{31-28} = 0b1111;
// Encode instruction operands.
let Inst{3-0} = Dm{3-0};
let Inst{5} = Dm{4};
let Inst{15-12} = Dd{3-0};
let Inst{22} = Dd{4};
let Inst{27-23} = opcod1;
let Inst{21-20} = opcod2;
let Inst{19-16} = opcod3;
let Inst{11-9} = 0b101;
let Inst{8} = 1; // Double precision
let Inst{7-6} = opcod4;
let Inst{4} = opcod5;
}
// Double precision, binary
class ADbI<bits<5> opcod1, bits<2> opcod2, bit op6, bit op4, dag oops,
dag iops, InstrItinClass itin, string opc, string asm,
list<dag> pattern>
: VFPAI<oops, iops, VFPBinaryFrm, itin, opc, asm, pattern> {
// Instruction operands.
bits<5> Dd;
bits<5> Dn;
bits<5> Dm;
// Encode instruction operands.
let Inst{3-0} = Dm{3-0};
let Inst{5} = Dm{4};
let Inst{19-16} = Dn{3-0};
let Inst{7} = Dn{4};
let Inst{15-12} = Dd{3-0};
let Inst{22} = Dd{4};
let Inst{27-23} = opcod1;
let Inst{21-20} = opcod2;
let Inst{11-9} = 0b101;
let Inst{8} = 1; // Double precision
let Inst{6} = op6;
let Inst{4} = op4;
let Predicates = [HasVFP2, HasDPVFP];
}
// FP, binary, not predicated
class ADbInp<bits<5> opcod1, bits<2> opcod2, bit opcod3, dag oops, dag iops,
InstrItinClass itin, string asm, list<dag> pattern>
: VFPXI<oops, iops, AddrModeNone, 4, IndexModeNone, VFPBinaryFrm, itin,
asm, "", pattern>
{
// Instruction operands.
bits<5> Dd;
bits<5> Dn;
bits<5> Dm;
let Inst{31-28} = 0b1111;
// Encode instruction operands.
let Inst{3-0} = Dm{3-0};
let Inst{5} = Dm{4};
let Inst{19-16} = Dn{3-0};
let Inst{7} = Dn{4};
let Inst{15-12} = Dd{3-0};
let Inst{22} = Dd{4};
let Inst{27-23} = opcod1;
let Inst{21-20} = opcod2;
let Inst{11-9} = 0b101;
let Inst{8} = 1; // double precision
let Inst{6} = opcod3;
let Inst{4} = 0;
let Predicates = [HasVFP2, HasDPVFP];
}
// Single precision, unary, predicated
class ASuI<bits<5> opcod1, bits<2> opcod2, bits<4> opcod3, bits<2> opcod4,
bit opcod5, dag oops, dag iops, InstrItinClass itin, string opc,
string asm, list<dag> pattern>
: VFPAI<oops, iops, VFPUnaryFrm, itin, opc, asm, pattern> {
// Instruction operands.
bits<5> Sd;
bits<5> Sm;
// Encode instruction operands.
let Inst{3-0} = Sm{4-1};
let Inst{5} = Sm{0};
let Inst{15-12} = Sd{4-1};
let Inst{22} = Sd{0};
let Inst{27-23} = opcod1;
let Inst{21-20} = opcod2;
let Inst{19-16} = opcod3;
let Inst{11-9} = 0b101;
let Inst{8} = 0; // Single precision
let Inst{7-6} = opcod4;
let Inst{4} = opcod5;
}
// Single precision, unary, non-predicated
class ASuInp<bits<5> opcod1, bits<2> opcod2, bits<4> opcod3, bits<2> opcod4,
bit opcod5, dag oops, dag iops, InstrItinClass itin,
string asm, list<dag> pattern>
: VFPXI<oops, iops, AddrModeNone, 4, IndexModeNone,
VFPUnaryFrm, itin, asm, "", pattern> {
// Instruction operands.
bits<5> Sd;
bits<5> Sm;
let Inst{31-28} = 0b1111;
// Encode instruction operands.
let Inst{3-0} = Sm{4-1};
let Inst{5} = Sm{0};
let Inst{15-12} = Sd{4-1};
let Inst{22} = Sd{0};
let Inst{27-23} = opcod1;
let Inst{21-20} = opcod2;
let Inst{19-16} = opcod3;
let Inst{11-9} = 0b101;
let Inst{8} = 0; // Single precision
let Inst{7-6} = opcod4;
let Inst{4} = opcod5;
}
// Single precision unary, if no NEON. Same as ASuI except not available if
// NEON is enabled.
class ASuIn<bits<5> opcod1, bits<2> opcod2, bits<4> opcod3, bits<2> opcod4,
bit opcod5, dag oops, dag iops, InstrItinClass itin, string opc,
string asm, list<dag> pattern>
: ASuI<opcod1, opcod2, opcod3, opcod4, opcod5, oops, iops, itin, opc, asm,
pattern> {
list<Predicate> Predicates = [HasVFP2,DontUseNEONForFP];
}
// Single precision, binary
class ASbI<bits<5> opcod1, bits<2> opcod2, bit op6, bit op4, dag oops, dag iops,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: VFPAI<oops, iops, VFPBinaryFrm, itin, opc, asm, pattern> {
// Instruction operands.
bits<5> Sd;
bits<5> Sn;
bits<5> Sm;
// Encode instruction operands.
let Inst{3-0} = Sm{4-1};
let Inst{5} = Sm{0};
let Inst{19-16} = Sn{4-1};
let Inst{7} = Sn{0};
let Inst{15-12} = Sd{4-1};
let Inst{22} = Sd{0};
let Inst{27-23} = opcod1;
let Inst{21-20} = opcod2;
let Inst{11-9} = 0b101;
let Inst{8} = 0; // Single precision
let Inst{6} = op6;
let Inst{4} = op4;
}
// Single precision, binary, not predicated
class ASbInp<bits<5> opcod1, bits<2> opcod2, bit opcod3, dag oops, dag iops,
InstrItinClass itin, string asm, list<dag> pattern>
: VFPXI<oops, iops, AddrModeNone, 4, IndexModeNone,
VFPBinaryFrm, itin, asm, "", pattern>
{
// Instruction operands.
bits<5> Sd;
bits<5> Sn;
bits<5> Sm;
let Inst{31-28} = 0b1111;
// Encode instruction operands.
let Inst{3-0} = Sm{4-1};
let Inst{5} = Sm{0};
let Inst{19-16} = Sn{4-1};
let Inst{7} = Sn{0};
let Inst{15-12} = Sd{4-1};
let Inst{22} = Sd{0};
let Inst{27-23} = opcod1;
let Inst{21-20} = opcod2;
let Inst{11-9} = 0b101;
let Inst{8} = 0; // Single precision
let Inst{6} = opcod3;
let Inst{4} = 0;
}
// Single precision binary, if no NEON. Same as ASbI except not available if
// NEON is enabled.
class ASbIn<bits<5> opcod1, bits<2> opcod2, bit op6, bit op4, dag oops,
dag iops, InstrItinClass itin, string opc, string asm,
list<dag> pattern>
: ASbI<opcod1, opcod2, op6, op4, oops, iops, itin, opc, asm, pattern> {
list<Predicate> Predicates = [HasVFP2,DontUseNEONForFP];
// Instruction operands.
bits<5> Sd;
bits<5> Sn;
bits<5> Sm;
// Encode instruction operands.
let Inst{3-0} = Sm{4-1};
let Inst{5} = Sm{0};
let Inst{19-16} = Sn{4-1};
let Inst{7} = Sn{0};
let Inst{15-12} = Sd{4-1};
let Inst{22} = Sd{0};
}
// VFP conversion instructions
class AVConv1I<bits<5> opcod1, bits<2> opcod2, bits<4> opcod3, bits<4> opcod4,
dag oops, dag iops, InstrItinClass itin, string opc, string asm,
list<dag> pattern>
: VFPAI<oops, iops, VFPConv1Frm, itin, opc, asm, pattern> {
let Inst{27-23} = opcod1;
let Inst{21-20} = opcod2;
let Inst{19-16} = opcod3;
let Inst{11-8} = opcod4;
let Inst{6} = 1;
let Inst{4} = 0;
}
// VFP conversion between floating-point and fixed-point
class AVConv1XI<bits<5> op1, bits<2> op2, bits<4> op3, bits<4> op4, bit op5,
dag oops, dag iops, InstrItinClass itin, string opc, string asm,
list<dag> pattern>
: AVConv1I<op1, op2, op3, op4, oops, iops, itin, opc, asm, pattern> {
bits<5> fbits;
// size (fixed-point number): sx == 0 ? 16 : 32
let Inst{7} = op5; // sx
let Inst{5} = fbits{0};
let Inst{3-0} = fbits{4-1};
}
// VFP conversion instructions, if no NEON
class AVConv1In<bits<5> opcod1, bits<2> opcod2, bits<4> opcod3, bits<4> opcod4,
dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: AVConv1I<opcod1, opcod2, opcod3, opcod4, oops, iops, itin, opc, asm,
pattern> {
list<Predicate> Predicates = [HasVFP2,DontUseNEONForFP];
}
class AVConvXI<bits<8> opcod1, bits<4> opcod2, dag oops, dag iops, Format f,
InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: VFPAI<oops, iops, f, itin, opc, asm, pattern> {
let Inst{27-20} = opcod1;
let Inst{11-8} = opcod2;
let Inst{4} = 1;
}
class AVConv2I<bits<8> opcod1, bits<4> opcod2, dag oops, dag iops,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: AVConvXI<opcod1, opcod2, oops, iops, VFPConv2Frm, itin, opc, asm, pattern>;
class AVConv3I<bits<8> opcod1, bits<4> opcod2, dag oops, dag iops,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: AVConvXI<opcod1, opcod2, oops, iops, VFPConv3Frm, itin, opc, asm, pattern>;
class AVConv4I<bits<8> opcod1, bits<4> opcod2, dag oops, dag iops,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: AVConvXI<opcod1, opcod2, oops, iops, VFPConv4Frm, itin, opc, asm, pattern>;
class AVConv5I<bits<8> opcod1, bits<4> opcod2, dag oops, dag iops,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: AVConvXI<opcod1, opcod2, oops, iops, VFPConv5Frm, itin, opc, asm, pattern>;
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// ARM NEON Instruction templates.
//
class NeonI<dag oops, dag iops, AddrMode am, IndexMode im, Format f,
InstrItinClass itin, string opc, string dt, string asm, string cstr,
list<dag> pattern>
: InstARM<am, 4, im, f, NeonDomain, cstr, itin> {
let OutOperandList = oops;
let InOperandList = !con(iops, (ins pred:$p));
let AsmString = !strconcat(opc, "${p}", ".", dt, "\t", asm);
let Pattern = pattern;
list<Predicate> Predicates = [HasNEON];
let DecoderNamespace = "NEON";
}
// Same as NeonI except it does not have a "data type" specifier.
class NeonXI<dag oops, dag iops, AddrMode am, IndexMode im, Format f,
InstrItinClass itin, string opc, string asm, string cstr,
list<dag> pattern>
: InstARM<am, 4, im, f, NeonDomain, cstr, itin> {
let OutOperandList = oops;
let InOperandList = !con(iops, (ins pred:$p));
let AsmString = !strconcat(opc, "${p}", "\t", asm);
let Pattern = pattern;
list<Predicate> Predicates = [HasNEON];
let DecoderNamespace = "NEON";
}
// Same as NeonI except it is not predicated
class NeonInp<dag oops, dag iops, AddrMode am, IndexMode im, Format f,
InstrItinClass itin, string opc, string dt, string asm, string cstr,
list<dag> pattern>
: InstARM<am, 4, im, f, NeonDomain, cstr, itin> {
let OutOperandList = oops;
let InOperandList = iops;
let AsmString = !strconcat(opc, ".", dt, "\t", asm);
let Pattern = pattern;
list<Predicate> Predicates = [HasNEON];
let DecoderNamespace = "NEON";
let Inst{31-28} = 0b1111;
}
class NLdSt<bit op23, bits<2> op21_20, bits<4> op11_8, bits<4> op7_4,
dag oops, dag iops, InstrItinClass itin,
string opc, string dt, string asm, string cstr, list<dag> pattern>
: NeonI<oops, iops, AddrMode6, IndexModeNone, NLdStFrm, itin, opc, dt, asm,
cstr, pattern> {
let Inst{31-24} = 0b11110100;
let Inst{23} = op23;
let Inst{21-20} = op21_20;
let Inst{11-8} = op11_8;
let Inst{7-4} = op7_4;
let PostEncoderMethod = "NEONThumb2LoadStorePostEncoder";
let DecoderNamespace = "NEONLoadStore";
bits<5> Vd;
bits<6> Rn;
bits<4> Rm;
let Inst{22} = Vd{4};
let Inst{15-12} = Vd{3-0};
let Inst{19-16} = Rn{3-0};
let Inst{3-0} = Rm{3-0};
}
class NLdStLn<bit op23, bits<2> op21_20, bits<4> op11_8, bits<4> op7_4,
dag oops, dag iops, InstrItinClass itin,
string opc, string dt, string asm, string cstr, list<dag> pattern>
: NLdSt<op23, op21_20, op11_8, op7_4, oops, iops, itin, opc,
dt, asm, cstr, pattern> {
bits<3> lane;
}
class PseudoNLdSt<dag oops, dag iops, InstrItinClass itin, string cstr>
: InstARM<AddrMode6, 4, IndexModeNone, Pseudo, NeonDomain, cstr,
itin> {
let OutOperandList = oops;
let InOperandList = !con(iops, (ins pred:$p));
list<Predicate> Predicates = [HasNEON];
}
class PseudoNeonI<dag oops, dag iops, InstrItinClass itin, string cstr,
list<dag> pattern>
: InstARM<AddrModeNone, 4, IndexModeNone, Pseudo, NeonDomain, cstr,
itin> {
let OutOperandList = oops;
let InOperandList = !con(iops, (ins pred:$p));
let Pattern = pattern;
list<Predicate> Predicates = [HasNEON];
}
class NDataI<dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string dt, string asm, string cstr, list<dag> pattern>
: NeonI<oops, iops, AddrModeNone, IndexModeNone, f, itin, opc, dt, asm, cstr,
pattern> {
let Inst{31-25} = 0b1111001;
let PostEncoderMethod = "NEONThumb2DataIPostEncoder";
let DecoderNamespace = "NEONData";
}
class NDataXI<dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string asm, string cstr, list<dag> pattern>
: NeonXI<oops, iops, AddrModeNone, IndexModeNone, f, itin, opc, asm,
cstr, pattern> {
let Inst{31-25} = 0b1111001;
let PostEncoderMethod = "NEONThumb2DataIPostEncoder";
let DecoderNamespace = "NEONData";
}
// NEON "one register and a modified immediate" format.
class N1ModImm<bit op23, bits<3> op21_19, bits<4> op11_8, bit op7, bit op6,
bit op5, bit op4,
dag oops, dag iops, InstrItinClass itin,
string opc, string dt, string asm, string cstr,
list<dag> pattern>
: NDataI<oops, iops, N1RegModImmFrm, itin, opc, dt, asm, cstr, pattern> {
let Inst{23} = op23;
let Inst{21-19} = op21_19;
let Inst{11-8} = op11_8;
let Inst{7} = op7;
let Inst{6} = op6;
let Inst{5} = op5;
let Inst{4} = op4;
// Instruction operands.
bits<5> Vd;
bits<13> SIMM;
let Inst{15-12} = Vd{3-0};
let Inst{22} = Vd{4};
let Inst{24} = SIMM{7};
let Inst{18-16} = SIMM{6-4};
let Inst{3-0} = SIMM{3-0};
let DecoderMethod = "DecodeNEONModImmInstruction";
}
// NEON 2 vector register format.
class N2V<bits<2> op24_23, bits<2> op21_20, bits<2> op19_18, bits<2> op17_16,
bits<5> op11_7, bit op6, bit op4,
dag oops, dag iops, InstrItinClass itin,
string opc, string dt, string asm, string cstr, list<dag> pattern>
: NDataI<oops, iops, N2RegFrm, itin, opc, dt, asm, cstr, pattern> {
let Inst{24-23} = op24_23;
let Inst{21-20} = op21_20;
let Inst{19-18} = op19_18;
let Inst{17-16} = op17_16;
let Inst{11-7} = op11_7;
let Inst{6} = op6;
let Inst{4} = op4;
// Instruction operands.
bits<5> Vd;
bits<5> Vm;
let Inst{15-12} = Vd{3-0};
let Inst{22} = Vd{4};
let Inst{3-0} = Vm{3-0};
let Inst{5} = Vm{4};
}
// Same as N2V but not predicated.
class N2Vnp<bits<2> op19_18, bits<2> op17_16, bits<3> op10_8, bit op7, bit op6,
dag oops, dag iops, InstrItinClass itin, string OpcodeStr,
string Dt, list<dag> pattern>
: NeonInp<oops, iops, AddrModeNone, IndexModeNone, N2RegFrm, itin,
OpcodeStr, Dt, "$Vd, $Vm", "", pattern> {
bits<5> Vd;
bits<5> Vm;
// Encode instruction operands
let Inst{22} = Vd{4};
let Inst{15-12} = Vd{3-0};
let Inst{5} = Vm{4};
let Inst{3-0} = Vm{3-0};
// Encode constant bits
let Inst{27-23} = 0b00111;
let Inst{21-20} = 0b11;
let Inst{19-18} = op19_18;
let Inst{17-16} = op17_16;
let Inst{11} = 0;
let Inst{10-8} = op10_8;
let Inst{7} = op7;
let Inst{6} = op6;
let Inst{4} = 0;
let DecoderNamespace = "NEON";
}
// Same as N2V except it doesn't have a datatype suffix.
class N2VX<bits<2> op24_23, bits<2> op21_20, bits<2> op19_18, bits<2> op17_16,
bits<5> op11_7, bit op6, bit op4,
dag oops, dag iops, InstrItinClass itin,
string opc, string asm, string cstr, list<dag> pattern>
: NDataXI<oops, iops, N2RegFrm, itin, opc, asm, cstr, pattern> {
let Inst{24-23} = op24_23;
let Inst{21-20} = op21_20;
let Inst{19-18} = op19_18;
let Inst{17-16} = op17_16;
let Inst{11-7} = op11_7;
let Inst{6} = op6;
let Inst{4} = op4;
// Instruction operands.
bits<5> Vd;
bits<5> Vm;
let Inst{15-12} = Vd{3-0};
let Inst{22} = Vd{4};
let Inst{3-0} = Vm{3-0};
let Inst{5} = Vm{4};
}
// NEON 2 vector register with immediate.
class N2VImm<bit op24, bit op23, bits<4> op11_8, bit op7, bit op6, bit op4,
dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string dt, string asm, string cstr, list<dag> pattern>
: NDataI<oops, iops, f, itin, opc, dt, asm, cstr, pattern> {
let Inst{24} = op24;
let Inst{23} = op23;
let Inst{11-8} = op11_8;
let Inst{7} = op7;
let Inst{6} = op6;
let Inst{4} = op4;
// Instruction operands.
bits<5> Vd;
bits<5> Vm;
bits<6> SIMM;
let Inst{15-12} = Vd{3-0};
let Inst{22} = Vd{4};
let Inst{3-0} = Vm{3-0};
let Inst{5} = Vm{4};
let Inst{21-16} = SIMM{5-0};
}
// NEON 3 vector register format.
class N3VCommon<bit op24, bit op23, bits<2> op21_20, bits<4> op11_8, bit op6,
bit op4, dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string dt, string asm, string cstr,
list<dag> pattern>
: NDataI<oops, iops, f, itin, opc, dt, asm, cstr, pattern> {
let Inst{24} = op24;
let Inst{23} = op23;
let Inst{21-20} = op21_20;
let Inst{11-8} = op11_8;
let Inst{6} = op6;
let Inst{4} = op4;
}
class N3V<bit op24, bit op23, bits<2> op21_20, bits<4> op11_8, bit op6, bit op4,
dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string dt, string asm, string cstr, list<dag> pattern>
: N3VCommon<op24, op23, op21_20, op11_8, op6, op4,
oops, iops, f, itin, opc, dt, asm, cstr, pattern> {
// Instruction operands.
bits<5> Vd;
bits<5> Vn;
bits<5> Vm;
let Inst{15-12} = Vd{3-0};
let Inst{22} = Vd{4};
let Inst{19-16} = Vn{3-0};
let Inst{7} = Vn{4};
let Inst{3-0} = Vm{3-0};
let Inst{5} = Vm{4};
}
class N3Vnp<bits<5> op27_23, bits<2> op21_20, bits<4> op11_8, bit op6,
bit op4, dag oops, dag iops,Format f, InstrItinClass itin,
string OpcodeStr, string Dt, list<dag> pattern>
: NeonInp<oops, iops, AddrModeNone, IndexModeNone, f, itin, OpcodeStr,
Dt, "$Vd, $Vn, $Vm", "", pattern> {
bits<5> Vd;
bits<5> Vn;
bits<5> Vm;
// Encode instruction operands
let Inst{22} = Vd{4};
let Inst{15-12} = Vd{3-0};
let Inst{19-16} = Vn{3-0};
let Inst{7} = Vn{4};
let Inst{5} = Vm{4};
let Inst{3-0} = Vm{3-0};
// Encode constant bits
let Inst{27-23} = op27_23;
let Inst{21-20} = op21_20;
let Inst{11-8} = op11_8;
let Inst{6} = op6;
let Inst{4} = op4;
}
class N3VLane32<bit op24, bit op23, bits<2> op21_20, bits<4> op11_8, bit op6,
bit op4, dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string dt, string asm, string cstr,
list<dag> pattern>
: N3VCommon<op24, op23, op21_20, op11_8, op6, op4,
oops, iops, f, itin, opc, dt, asm, cstr, pattern> {
// Instruction operands.
bits<5> Vd;
bits<5> Vn;
bits<5> Vm;
bit lane;
let Inst{15-12} = Vd{3-0};
let Inst{22} = Vd{4};
let Inst{19-16} = Vn{3-0};
let Inst{7} = Vn{4};
let Inst{3-0} = Vm{3-0};
let Inst{5} = lane;
}
class N3VLane16<bit op24, bit op23, bits<2> op21_20, bits<4> op11_8, bit op6,
bit op4, dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string dt, string asm, string cstr,
list<dag> pattern>
: N3VCommon<op24, op23, op21_20, op11_8, op6, op4,
oops, iops, f, itin, opc, dt, asm, cstr, pattern> {
// Instruction operands.
bits<5> Vd;
bits<5> Vn;
bits<5> Vm;
bits<2> lane;
let Inst{15-12} = Vd{3-0};
let Inst{22} = Vd{4};
let Inst{19-16} = Vn{3-0};
let Inst{7} = Vn{4};
let Inst{2-0} = Vm{2-0};
let Inst{5} = lane{1};
let Inst{3} = lane{0};
}
// Same as N3V except it doesn't have a data type suffix.
class N3VX<bit op24, bit op23, bits<2> op21_20, bits<4> op11_8, bit op6,
bit op4,
dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string asm, string cstr, list<dag> pattern>
: NDataXI<oops, iops, f, itin, opc, asm, cstr, pattern> {
let Inst{24} = op24;
let Inst{23} = op23;
let Inst{21-20} = op21_20;
let Inst{11-8} = op11_8;
let Inst{6} = op6;
let Inst{4} = op4;
// Instruction operands.
bits<5> Vd;
bits<5> Vn;
bits<5> Vm;
let Inst{15-12} = Vd{3-0};
let Inst{22} = Vd{4};
let Inst{19-16} = Vn{3-0};
let Inst{7} = Vn{4};
let Inst{3-0} = Vm{3-0};
let Inst{5} = Vm{4};
}
// NEON VMOVs between scalar and core registers.
class NVLaneOp<bits<8> opcod1, bits<4> opcod2, bits<2> opcod3,
dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string dt, string asm, list<dag> pattern>
: InstARM<AddrModeNone, 4, IndexModeNone, f, NeonDomain,
"", itin> {
let Inst{27-20} = opcod1;
let Inst{11-8} = opcod2;
let Inst{6-5} = opcod3;
let Inst{4} = 1;
// A8.6.303, A8.6.328, A8.6.329
let Inst{3-0} = 0b0000;
let OutOperandList = oops;
let InOperandList = !con(iops, (ins pred:$p));
let AsmString = !strconcat(opc, "${p}", ".", dt, "\t", asm);
let Pattern = pattern;
list<Predicate> Predicates = [HasNEON];
let PostEncoderMethod = "NEONThumb2DupPostEncoder";
let DecoderNamespace = "NEONDup";
bits<5> V;
bits<4> R;
bits<4> p;
bits<4> lane;
let Inst{31-28} = p{3-0};
let Inst{7} = V{4};
let Inst{19-16} = V{3-0};
let Inst{15-12} = R{3-0};
}
class NVGetLane<bits<8> opcod1, bits<4> opcod2, bits<2> opcod3,
dag oops, dag iops, InstrItinClass itin,
string opc, string dt, string asm, list<dag> pattern>
: NVLaneOp<opcod1, opcod2, opcod3, oops, iops, NGetLnFrm, itin,
opc, dt, asm, pattern>;
class NVSetLane<bits<8> opcod1, bits<4> opcod2, bits<2> opcod3,
dag oops, dag iops, InstrItinClass itin,
string opc, string dt, string asm, list<dag> pattern>
: NVLaneOp<opcod1, opcod2, opcod3, oops, iops, NSetLnFrm, itin,
opc, dt, asm, pattern>;
class NVDup<bits<8> opcod1, bits<4> opcod2, bits<2> opcod3,
dag oops, dag iops, InstrItinClass itin,
string opc, string dt, string asm, list<dag> pattern>
: NVLaneOp<opcod1, opcod2, opcod3, oops, iops, NDupFrm, itin,
opc, dt, asm, pattern>;
// Vector Duplicate Lane (from scalar to all elements)
class NVDupLane<bits<4> op19_16, bit op6, dag oops, dag iops,
InstrItinClass itin, string opc, string dt, string asm,
list<dag> pattern>
: NDataI<oops, iops, NVDupLnFrm, itin, opc, dt, asm, "", pattern> {
let Inst{24-23} = 0b11;
let Inst{21-20} = 0b11;
let Inst{19-16} = op19_16;
let Inst{11-7} = 0b11000;
let Inst{6} = op6;
let Inst{4} = 0;
bits<5> Vd;
bits<5> Vm;
let Inst{22} = Vd{4};
let Inst{15-12} = Vd{3-0};
let Inst{5} = Vm{4};
let Inst{3-0} = Vm{3-0};
}
// NEONFPPat - Same as Pat<>, but requires that the compiler be using NEON
// for single-precision FP.
class NEONFPPat<dag pattern, dag result> : Pat<pattern, result> {
list<Predicate> Predicates = [HasNEON,UseNEONForFP];
}
// VFP/NEON Instruction aliases for type suffices.
class VFPDataTypeInstAlias<string opc, string dt, string asm, dag Result> :
InstAlias<!strconcat(opc, dt, "\t", asm), Result>, Requires<[HasVFP2]>;
multiclass VFPDTAnyInstAlias<string opc, string asm, dag Result> {
def : VFPDataTypeInstAlias<opc, ".8", asm, Result>;
def : VFPDataTypeInstAlias<opc, ".16", asm, Result>;
def : VFPDataTypeInstAlias<opc, ".32", asm, Result>;
def : VFPDataTypeInstAlias<opc, ".64", asm, Result>;
}
multiclass NEONDTAnyInstAlias<string opc, string asm, dag Result> {
let Predicates = [HasNEON] in {
def : VFPDataTypeInstAlias<opc, ".8", asm, Result>;
def : VFPDataTypeInstAlias<opc, ".16", asm, Result>;
def : VFPDataTypeInstAlias<opc, ".32", asm, Result>;
def : VFPDataTypeInstAlias<opc, ".64", asm, Result>;
}
}
// The same alias classes using AsmPseudo instead, for the more complex
// stuff in NEON that InstAlias can't quite handle.
// Note that we can't use anonymous defm references here like we can
// above, as we care about the ultimate instruction enum names generated, unlike
// for instalias defs.
class NEONDataTypeAsmPseudoInst<string opc, string dt, string asm, dag iops> :
AsmPseudoInst<!strconcat(opc, dt, "\t", asm), iops>, Requires<[HasNEON]>;
// Data type suffix token aliases. Implements Table A7-3 in the ARM ARM.
def : TokenAlias<".s8", ".i8">;
def : TokenAlias<".u8", ".i8">;
def : TokenAlias<".s16", ".i16">;
def : TokenAlias<".u16", ".i16">;
def : TokenAlias<".s32", ".i32">;
def : TokenAlias<".u32", ".i32">;
def : TokenAlias<".s64", ".i64">;
def : TokenAlias<".u64", ".i64">;
def : TokenAlias<".i8", ".8">;
def : TokenAlias<".i16", ".16">;
def : TokenAlias<".i32", ".32">;
def : TokenAlias<".i64", ".64">;
def : TokenAlias<".p8", ".8">;
def : TokenAlias<".p16", ".16">;
def : TokenAlias<".f32", ".32">;
def : TokenAlias<".f64", ".64">;
def : TokenAlias<".f", ".f32">;
def : TokenAlias<".d", ".f64">;
Reference in New Issue View Git Blame Copy Permalink