-//===- ARMInstrFormats.td - ARM Instruction Formats ----------*- tablegen -*-=//
+//===-- ARMInstrFormats.td - ARM Instruction Formats -------*- tablegen -*-===//
//
// The LLVM Compiler Infrastructure
//
// 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, CCR),
+def pred : PredicateOperand<OtherVT, (ops i32imm, i32imm),
(ops (i32 14), (i32 zero_reg))> {
let PrintMethod = "printPredicateOperand";
let ParserMatchClass = CondCodeOperand;
- let DecoderMethod = "DecodePredicateOperand";
+ let DecoderMethod = "DecodePredicateOperand";
}
// Conditional code result for instructions whose 's' bit is set, e.g. subs.
let EncoderMethod = "getCCOutOpValue";
let PrintMethod = "printSBitModifierOperand";
let ParserMatchClass = CCOutOperand;
- let DecoderMethod = "DecodeCCOutOperand";
+ let DecoderMethod = "DecodeCCOutOperand";
}
// Same as cc_out except it defaults to setting CPSR.
let EncoderMethod = "getCCOutOpValue";
let PrintMethod = "printSBitModifierOperand";
let ParserMatchClass = CCOutOperand;
- let DecoderMethod = "DecodeCCOutOperand";
+ let DecoderMethod = "DecodeCCOutOperand";
}
// ARM special operands for disassembly only.
//
-def SetEndAsmOperand : AsmOperandClass {
+def SetEndAsmOperand : ImmAsmOperand {
let Name = "SetEndImm";
let ParserMethod = "parseSetEndImm";
}
// 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> {
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> {
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> {
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> {
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 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 {
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 ARMBaseInstrInfo.h.
+ // 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,
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>
+ : InstTemplate<AddrModeNone, 0, IndexModeNone, Pseudo, GenericDomain,
+ "", NoItinerary> {
+ let OutOperandList = (outs);
+ 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> : AsmPseudoInst<asm, iops>,
+ Requires<[IsARM]>;
+class tAsmPseudo<string asm, dag iops> : AsmPseudoInst<asm, iops>,
+ Requires<[IsThumb]>;
+class t2AsmPseudo<string asm, dag iops> : AsmPseudoInst<asm, iops>,
+ Requires<[IsThumb2]>;
+class VFP2AsmPseudo<string asm, dag iops> : AsmPseudoInst<asm, iops>,
+ Requires<[HasVFP2]>;
+class NEONAsmPseudo<string asm, dag iops> : AsmPseudoInst<asm, iops>,
+ 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 Inst{15-12} = Rt;
let Inst{11-4} = 0b00001001;
let Inst{3-0} = Rt2;
+
+ let Unpredictable{11-8} = 0b1111;
+ let DecoderMethod = "DecodeSwap";
}
// addrmode1 instructions
let DecoderMethod = "DecodeAddrMode3Instruction";
}
-class AI3ldstidx<bits<4> op, bit op20, bit isLd, bit isPre, dag oops, dag iops,
+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,
let Inst{7-4} = op;
}
-class AI3stridx<bits<4> op, 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> {
- // AM3 store w/ two operands: (GPR, am3offset)
- bits<14> offset;
- bits<4> Rt;
- bits<4> Rn;
- let Inst{27-25} = 0b000;
- let Inst{23} = offset{8};
- let Inst{22} = offset{9};
- let Inst{19-16} = Rn;
- let Inst{15-12} = Rt; // Rt
- let Inst{11-8} = offset{7-4}; // imm7_4/zero
- let Inst{7-4} = op;
- let Inst{3-0} = offset{3-0}; // imm3_0/Rm
-}
-
// stores
class AI3str<bits<4> op, dag oops, dag iops, Format f, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
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";
}
-// Pre-indexed stores
-class AI3sthpr<dag oops, dag iops, Format f, InstrItinClass itin,
- string opc, string asm, string cstr, list<dag> pattern>
- : I<oops, iops, AddrMode3, 4, IndexModePre, f, itin,
- opc, asm, cstr, pattern> {
- let Inst{4} = 1;
- let Inst{5} = 1; // H bit
- let Inst{6} = 0; // S bit
- let Inst{7} = 1;
- let Inst{20} = 0; // L bit
- let Inst{21} = 1; // W bit
- let Inst{24} = 1; // P bit
- let Inst{27-25} = 0b000;
-}
// addrmode4 instructions
class AXI4<dag oops, dag iops, IndexMode im, Format f, InstrItinClass itin,
string asm, string cstr, list<dag> pattern>
let Inst{7-4} = 0b0111;
let Inst{9-8} = 0b00;
let Inst{27-20} = opcod;
+
+ let Unpredictable{9-8} = 0b11;
}
// Misc Arithmetic instructions.
}
// PKH instructions
-def PKHLSLAsmOperand : AsmOperandClass {
+def PKHLSLAsmOperand : ImmAsmOperand {
let Name = "PKHLSLImm";
let ParserMethod = "parsePKHLSLImm";
}
let InOperandList = !con(iops, (ins pred:$p));
let AsmString = !strconcat(opc, "${s}${p}", asm);
let Pattern = pattern;
+ let thumbArithFlagSetting = 1;
list<Predicate> Predicates = [IsThumb, IsThumb1Only];
+ let DecoderNamespace = "ThumbSBit";
}
class T1sI<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: Thumb2I<oops, iops, AddrModeT2_pc, 4, itin, opc, asm, "", pattern>;
class T2Ii8s4<bit P, bit W, bit isLoad, dag oops, dag iops, InstrItinClass itin,
- string opc, string asm, list<dag> pattern>
- : Thumb2I<oops, iops, AddrModeT2_i8s4, 4, itin, opc, asm, "",
+ string opc, string asm, string cstr, list<dag> pattern>
+ : Thumb2I<oops, iops, AddrModeT2_i8s4, 4, itin, opc, asm, cstr,
pattern> {
bits<4> Rt;
bits<4> Rt2;
let Inst{11-8} = Rt2{3-0};
let Inst{7-0} = addr{7-0};
}
-
-class T2Ii8s4Tied<bit P, bit W, bit isLoad, dag oops, dag iops, InstrItinClass itin,
- string opc, string asm, list<dag> pattern>
- : Thumb2I<oops, iops, AddrModeT2_i8s4, 4, itin, opc, asm, "$base = $wb",
+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> base;
+ bits<4> addr;
bits<9> imm;
let Inst{31-25} = 0b1110100;
let Inst{24} = P;
let Inst{22} = 1;
let Inst{21} = W;
let Inst{20} = isLoad;
- let Inst{19-16} = base{3-0};
+ 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>;
string asm, string cstr, list<dag> pattern>
: Thumb2XI<oops, iops, AddrModeNone, 4, itin, asm, cstr, pattern>;
-// T2Iidxldst - Thumb2 indexed load / store instructions.
-class T2Iidxldst<bit signed, bits<2> opcod, bit load, bit pre,
+// 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>
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};
- bits<9> addr;
- let Inst{7-0} = addr{7-0};
- let Inst{9} = addr{8}; // Sign bit
+ 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, "${p}", asm);
+ let Pattern = pattern;
+ list<Predicate> Predicates = [IsThumb2];
+ let DecoderNamespace = "Thumb2";
bits<4> Rt;
bits<4> Rn;
+ bits<9> offset;
+ let Inst{31-27} = 0b11111;
+ let Inst{26-25} = 0b00;
+ let Inst{24} = signed;
+ let Inst{23} = 0;
+ let Inst{22-21} = opcod;
+ let Inst{20} = load;
+ let Inst{19-16} = Rn;
let Inst{15-12} = Rt{3-0};
- let Inst{19-16} = Rn{3-0};
+ let Inst{11} = 1;
+ // (P, W) = (1, 1) Pre-indexed or (0, 1) Post-indexed
+ let Inst{10} = pre; // The P bit.
+ let Inst{9} = offset{8}; // Sign bit
+ let Inst{8} = 1; // The W bit.
+ let Inst{7-0} = offset{7-0};
+
+ let DecoderMethod = "DecodeT2LdStPre";
}
// Tv5Pat - Same as Pat<>, but requires V5T Thumb mode.
dag oops, dag iops, InstrItinClass itin, string opc, string asm,
list<dag> pattern>
: AVConv1I<op1, op2, op3, op4, oops, iops, itin, opc, asm, pattern> {
+ bits<5> fbits;
// size (fixed-point number): sx == 0 ? 16 : 32
let Inst{7} = op5; // sx
+ let Inst{5} = fbits{0};
+ let Inst{3-0} = fbits{4-1};
}
// VFP conversion instructions, if no NEON
let AsmString = !strconcat(opc, "${p}", ".", dt, "\t", asm);
let Pattern = pattern;
list<Predicate> Predicates = [HasNEON];
- let DecoderNamespace = "NEONData";
+ let DecoderNamespace = "NEON";
}
// Same as NeonI except it does not have a "data type" specifier.
let AsmString = !strconcat(opc, "${p}", "\t", asm);
let Pattern = pattern;
list<Predicate> Predicates = [HasNEON];
- let DecoderNamespace = "NEONData";
+ let DecoderNamespace = "NEON";
}
class NLdSt<bit op23, bits<2> op21_20, bits<4> op11_8, bits<4> op7_4,
pattern> {
let Inst{31-25} = 0b1111001;
let PostEncoderMethod = "NEONThumb2DataIPostEncoder";
+ let DecoderNamespace = "NEONData";
}
class NDataXI<dag oops, dag iops, Format f, InstrItinClass itin,
cstr, pattern> {
let Inst{31-25} = 0b1111001;
let PostEncoderMethod = "NEONThumb2DataIPostEncoder";
+ let DecoderNamespace = "NEONData";
}
// NEON "one register and a modified immediate" format.
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> Vd;
bits<5> Vm;
- bits<4> lane;
let Inst{22} = Vd{4};
let Inst{15-12} = Vd{3-0};
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">;
projects / oota-llvm.git / blobdiff