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//==- HexagonInstrFormats.td - Hexagon Instruction Formats --*- tablegen -*-==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file describes the Hexagon V4 instruction classes in TableGen format.
//
//===----------------------------------------------------------------------===//
//----------------------------------------------------------------------------//
// Hexagon Instruction Flags
//
// *** Must match BaseInfo.h ***
//----------------------------------------------------------------------------//
def TypeMEMOP : IType<9>;
def TypeNV : IType<10>;
def TypeDUPLEX : IType<11>;
def TypeCOMPOUND : IType<12>;
def TypeAG_VX : IType<28>;
def TypeAG_VM : IType<29>;
def TypePREFIX : IType<30>;
// Duplex Instruction Class Declaration
//===----------------------------------------------------------------------===//
class OpcodeDuplex {
field bits<32> Inst = ?; // Default to an invalid insn.
bits<4> IClass = 0; // ICLASS
bits<13> ISubHi = 0; // Low sub-insn
bits<13> ISubLo = 0; // High sub-insn
let Inst{31-29} = IClass{3-1};
let Inst{13} = IClass{0};
let Inst{15-14} = 0;
let Inst{28-16} = ISubHi;
let Inst{12-0} = ISubLo;
}
class InstDuplex<bits<4> iClass, list<dag> pattern = [],
string cstr = "">
: Instruction, OpcodeDuplex {
let Namespace = "Hexagon";
IType Type = TypeDUPLEX; // uses slot 0,1
let isCodeGenOnly = 1;
let hasSideEffects = 0;
dag OutOperandList = (outs);
dag InOperandList = (ins);
let IClass = iClass;
let Constraints = cstr;
let Itinerary = DUPLEX;
let Size = 4;
// SoftFail is a field the disassembler can use to provide a way for
// instructions to not match without killing the whole decode process. It is
// mainly used for ARM, but Tablegen expects this field to exist or it fails
// to build the decode table.
field bits<32> SoftFail = 0;
// *** Must match MCTargetDesc/HexagonBaseInfo.h ***
let TSFlags{4-0} = Type.Value;
// Predicated instructions.
bits<1> isPredicated = 0;
let TSFlags{6} = isPredicated;
bits<1> isPredicatedFalse = 0;
let TSFlags{7} = isPredicatedFalse;
bits<1> isPredicatedNew = 0;
let TSFlags{8} = isPredicatedNew;
// New-value insn helper fields.
bits<1> isNewValue = 0;
let TSFlags{9} = isNewValue; // New-value consumer insn.
bits<1> hasNewValue = 0;
let TSFlags{10} = hasNewValue; // New-value producer insn.
bits<3> opNewValue = 0;
let TSFlags{13-11} = opNewValue; // New-value produced operand.
bits<1> isNVStorable = 0;
let TSFlags{14} = isNVStorable; // Store that can become new-value store.
bits<1> isNVStore = 0;
let TSFlags{15} = isNVStore; // New-value store insn.
// Immediate extender helper fields.
bits<1> isExtendable = 0;
let TSFlags{16} = isExtendable; // Insn may be extended.
bits<1> isExtended = 0;
let TSFlags{17} = isExtended; // Insn must be extended.
bits<3> opExtendable = 0;
let TSFlags{20-18} = opExtendable; // Which operand may be extended.
bits<1> isExtentSigned = 0;
let TSFlags{21} = isExtentSigned; // Signed or unsigned range.
bits<5> opExtentBits = 0;
let TSFlags{26-22} = opExtentBits; //Number of bits of range before extending.
bits<2> opExtentAlign = 0;
let TSFlags{28-27} = opExtentAlign; // Alignment exponent before extending.
}
//----------------------------------------------------------------------------//
// Instruction Classes Definitions
//----------------------------------------------------------------------------//
//
// NV type instructions.
//
class NVInst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
string cstr = "", InstrItinClass itin = NCJ_tc_3or4stall_SLOT0>
: InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeNV>, OpcodeHexagon;
class NVInst_V4<dag outs, dag ins, string asmstr, list<dag> pattern = [],
string cstr = "", InstrItinClass itin = NCJ_tc_3or4stall_SLOT0>
: NVInst<outs, ins, asmstr, pattern, cstr, itin>;
// Definition of Post increment new value store.
class NVInstPost_V4<dag outs, dag ins, string asmstr, list<dag> pattern = [],
string cstr = "", InstrItinClass itin = ST_tc_st_SLOT0>
: NVInst<outs, ins, asmstr, pattern, cstr, itin>;
// Post increment ST Instruction.
let mayStore = 1 in
class NVInstPI_V4<dag outs, dag ins, string asmstr, list<dag> pattern = [],
string cstr = "", InstrItinClass itin = ST_tc_st_SLOT0>
: NVInst<outs, ins, asmstr, pattern, cstr, itin>;
// New-value conditional branch.
class NCJInst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
string cstr = "">
: NVInst<outs, ins, asmstr, pattern, cstr>;
let mayLoad = 1, mayStore = 1 in
class MEMInst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
string cstr = "", InstrItinClass itin = V4LDST_tc_st_SLOT0>
: InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeMEMOP>,
OpcodeHexagon;
class MEMInst_V4<dag outs, dag ins, string asmstr, list<dag> pattern = [],
string cstr = "", InstrItinClass itin = V4LDST_tc_st_SLOT0>
: MEMInst<outs, ins, asmstr, pattern, cstr, itin>;
let isCodeGenOnly = 1 in
class EXTENDERInst<dag outs, dag ins, string asmstr, list<dag> pattern = []>
: InstHexagon<outs, ins, asmstr, pattern, "", EXTENDER_tc_1_SLOT0123,
TypePREFIX>, OpcodeHexagon;
class SUBInst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
string cstr = "">
: InstHexagon<outs, ins, asmstr, pattern, "", PREFIX, TypeDUPLEX>,
OpcodeHexagon;
class CJInst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
string cstr = "">
: InstHexagon<outs, ins, asmstr, pattern, cstr, COMPOUND, TypeCOMPOUND>,
OpcodeHexagon;
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