//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
-// Hexagon Intruction Flags +
+// Hexagon Instruction Flags +
//
// *** Must match HexagonBaseInfo.h ***
//===----------------------------------------------------------------------===//
+class IType<bits<5> t> {
+ bits<5> Value = t;
+}
+def TypePSEUDO : IType<0>;
+def TypeALU32 : IType<1>;
+def TypeCR : IType<2>;
+def TypeJR : IType<3>;
+def TypeJ : IType<4>;
+def TypeLD : IType<5>;
+def TypeST : IType<6>;
+def TypeSYSTEM : IType<7>;
+def TypeXTYPE : IType<8>;
+def TypeENDLOOP: IType<31>;
+
+// Maintain list of valid subtargets for each instruction.
+class SubTarget<bits<6> value> {
+ bits<6> Value = value;
+}
+
+def HasAnySubT : SubTarget<0x3f>; // 111111
+def HasV5SubT : SubTarget<0x3e>; // 111110
+
+// Addressing modes for load/store instructions
+class AddrModeType<bits<3> value> {
+ bits<3> Value = value;
+}
+
+def NoAddrMode : AddrModeType<0>; // No addressing mode
+def Absolute : AddrModeType<1>; // Absolute addressing mode
+def AbsoluteSet : AddrModeType<2>; // Absolute set addressing mode
+def BaseImmOffset : AddrModeType<3>; // Indirect with offset
+def BaseLongOffset : AddrModeType<4>; // Indirect with long offset
+def BaseRegOffset : AddrModeType<5>; // Indirect with register offset
+def PostInc : AddrModeType<6>; // Post increment addressing mode
+
+class MemAccessSize<bits<4> value> {
+ bits<4> Value = value;
+}
+
+def NoMemAccess : MemAccessSize<0>;// Not a memory acces instruction.
+def ByteAccess : MemAccessSize<1>;// Byte access instruction (memb).
+def HalfWordAccess : MemAccessSize<2>;// Half word access instruction (memh).
+def WordAccess : MemAccessSize<3>;// Word access instruction (memw).
+def DoubleWordAccess : MemAccessSize<4>;// Double word access instruction (memd)
+
//===----------------------------------------------------------------------===//
-// Intruction Class Declaration +
+// Instruction Class Declaration +
//===----------------------------------------------------------------------===//
-class InstHexagon<dag outs, dag ins, string asmstr, list<dag> pattern,
- string cstr, InstrItinClass itin> : Instruction {
- field bits<32> Inst;
+class OpcodeHexagon {
+ field bits<32> Inst = ?; // Default to an invalid insn.
+ bits<4> IClass = 0; // ICLASS
+ bits<2> IParse = 0; // Parse bits.
+
+ let Inst{31-28} = IClass;
+ let Inst{15-14} = IParse;
+
+ bits<1> zero = 0;
+}
+class InstHexagon<dag outs, dag ins, string asmstr, list<dag> pattern,
+ string cstr, InstrItinClass itin, IType type>
+ : Instruction {
let Namespace = "Hexagon";
dag OutOperandList = outs;
dag InOperandList = ins;
- let AsmString = asmstr;
+ let AsmString = asmstr;
let Pattern = pattern;
let Constraints = cstr;
- let Itinerary = itin;
-
- // *** The code below must match HexagonBaseInfo.h ***
+ let Itinerary = itin;
+ 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 ***
+
+ // Instruction type according to the ISA.
+ IType Type = type;
+ let TSFlags{4-0} = Type.Value;
+
+ // Solo instructions, i.e., those that cannot be in a packet with others.
+ bits<1> isSolo = 0;
+ let TSFlags{5} = isSolo;
+ // Packed only with A or X-type instructions.
+ bits<1> isSoloAX = 0;
+ let TSFlags{6} = isSoloAX;
+ // Only A-type instruction in first slot or nothing.
+ bits<1> isSoloAin1 = 0;
+ let TSFlags{7} = isSoloAin1;
// Predicated instructions.
bits<1> isPredicated = 0;
- let TSFlags{1} = isPredicated;
-
- // *** The code above must match HexagonBaseInfo.h ***
+ let TSFlags{8} = isPredicated;
+ bits<1> isPredicatedFalse = 0;
+ let TSFlags{9} = isPredicatedFalse;
+ bits<1> isPredicatedNew = 0;
+ let TSFlags{10} = isPredicatedNew;
+ bits<1> isPredicateLate = 0;
+ let TSFlags{11} = isPredicateLate; // Late predicate producer insn.
+
+ // New-value insn helper fields.
+ bits<1> isNewValue = 0;
+ let TSFlags{12} = isNewValue; // New-value consumer insn.
+ bits<1> hasNewValue = 0;
+ let TSFlags{13} = hasNewValue; // New-value producer insn.
+ bits<3> opNewValue = 0;
+ let TSFlags{16-14} = opNewValue; // New-value produced operand.
+ bits<1> isNVStorable = 0;
+ let TSFlags{17} = isNVStorable; // Store that can become new-value store.
+ bits<1> isNVStore = 0;
+ let TSFlags{18} = isNVStore; // New-value store insn.
+ bits<1> isCVLoadable = 0;
+ let TSFlags{19} = isCVLoadable; // Load that can become cur-value load.
+ bits<1> isCVLoad = 0;
+ let TSFlags{20} = isCVLoad; // Cur-value load insn.
+
+ // Immediate extender helper fields.
+ bits<1> isExtendable = 0;
+ let TSFlags{21} = isExtendable; // Insn may be extended.
+ bits<1> isExtended = 0;
+ let TSFlags{22} = isExtended; // Insn must be extended.
+ bits<3> opExtendable = 0;
+ let TSFlags{25-23} = opExtendable; // Which operand may be extended.
+ bits<1> isExtentSigned = 0;
+ let TSFlags{26} = isExtentSigned; // Signed or unsigned range.
+ bits<5> opExtentBits = 0;
+ let TSFlags{31-27} = opExtentBits; //Number of bits of range before extending.
+ bits<2> opExtentAlign = 0;
+ let TSFlags{33-32} = opExtentAlign; // Alignment exponent before extending.
+
+ // If an instruction is valid on a subtarget, set the corresponding
+ // bit from validSubTargets.
+ // By default, instruction is valid on all subtargets.
+ SubTarget validSubTargets = HasAnySubT;
+ let TSFlags{39-34} = validSubTargets.Value;
+
+ // Addressing mode for load/store instructions.
+ AddrModeType addrMode = NoAddrMode;
+ let TSFlags{42-40} = addrMode.Value;
+
+ // Memory access size for mem access instructions (load/store)
+ MemAccessSize accessSize = NoMemAccess;
+ let TSFlags{46-43} = accessSize.Value;
+
+ bits<1> isTaken = 0;
+ let TSFlags {47} = isTaken; // Branch prediction.
+
+ bits<1> isFP = 0;
+ let TSFlags {48} = isFP; // Floating-point.
+
+ // Fields used for relation models.
+ string BaseOpcode = "";
+ string CextOpcode = "";
+ string PredSense = "";
+ string PNewValue = "";
+ string NValueST = ""; // Set to "true" for new-value stores.
+ string InputType = ""; // Input is "imm" or "reg" type.
+ string isMEMri = "false"; // Set to "true" for load/store with MEMri operand.
+ string isFloat = "false"; // Set to "true" for the floating-point load/store.
+ string isBrTaken = !if(isTaken, "true", "false"); // Set to "true"/"false" for jump instructions
+
+ let PredSense = !if(isPredicated, !if(isPredicatedFalse, "false", "true"),
+ "");
+ let PNewValue = !if(isPredicatedNew, "new", "");
+ let NValueST = !if(isNVStore, "true", "false");
+
+ // *** Must match MCTargetDesc/HexagonBaseInfo.h ***
}
//===----------------------------------------------------------------------===//
-// Intruction Classes Definitions +
+// Instruction Classes Definitions +
//===----------------------------------------------------------------------===//
// LD Instruction Class in V2/V3/V4.
// Definition of the instruction class NOT CHANGED.
-class LDInst<dag outs, dag ins, string asmstr, list<dag> pattern>
- : InstHexagon<outs, ins, asmstr, pattern, "", LD> {
- bits<5> rd;
- bits<5> rs;
- bits<13> imm13;
-}
+let mayLoad = 1 in
+class LDInst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = LD_tc_ld_SLOT01>
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeLD>, OpcodeHexagon;
+
+let mayLoad = 1 in
+class LDInst2<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "">
+ : LDInst<outs, ins, asmstr, pattern, cstr>;
+
+class CONSTLDInst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "">
+ : LDInst<outs, ins, asmstr, pattern, cstr>;
// LD Instruction Class in V2/V3/V4.
// Definition of the instruction class NOT CHANGED.
-class LDInstPost<dag outs, dag ins, string asmstr, list<dag> pattern,
- string cstr>
- : InstHexagon<outs, ins, asmstr, pattern, cstr, LD> {
- bits<5> rd;
- bits<5> rs;
- bits<5> rt;
- bits<13> imm13;
-}
+class LDInstPost<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "">
+ : LDInst<outs, ins, asmstr, pattern, cstr>;
+
+let mayLoad = 1 in
+class LD0Inst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin=LD_tc_ld_SLOT0>
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeLD>, OpcodeHexagon;
// ST Instruction Class in V2/V3 can take SLOT0 only.
// ST Instruction Class in V4 can take SLOT0 & SLOT1.
// Definition of the instruction class CHANGED from V2/V3 to V4.
-class STInst<dag outs, dag ins, string asmstr, list<dag> pattern>
- : InstHexagon<outs, ins, asmstr, pattern, "", ST> {
- bits<5> rd;
- bits<5> rs;
- bits<13> imm13;
-}
+let mayStore = 1 in
+class STInst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = ST_tc_st_SLOT01>
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeST>, OpcodeHexagon;
+
+class STInst2<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "">
+ : STInst<outs, ins, asmstr, pattern, cstr>;
+
+let mayStore = 1 in
+class ST0Inst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = ST_tc_ld_SLOT0>
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeST>, OpcodeHexagon;
// ST Instruction Class in V2/V3 can take SLOT0 only.
// ST Instruction Class in V4 can take SLOT0 & SLOT1.
// Definition of the instruction class CHANGED from V2/V3 to V4.
-class STInstPost<dag outs, dag ins, string asmstr, list<dag> pattern,
- string cstr>
- : InstHexagon<outs, ins, asmstr, pattern, cstr, ST> {
- bits<5> rd;
- bits<5> rs;
- bits<5> rt;
- bits<13> imm13;
-}
+class STInstPost<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = ST_tc_st_SLOT01>
+ : STInst<outs, ins, asmstr, pattern, cstr, itin>;
+
+// SYSTEM Instruction Class in V4 can take SLOT0 only
+// In V2/V3 we used ST for this but in v4 ST can take SLOT0 or SLOT1.
+class SYSInst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = ST_tc_3stall_SLOT0>
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeSYSTEM>,
+ OpcodeHexagon;
// ALU32 Instruction Class in V2/V3/V4.
// Definition of the instruction class NOT CHANGED.
-class ALU32Type<dag outs, dag ins, string asmstr, list<dag> pattern>
- : InstHexagon<outs, ins, asmstr, pattern, "", ALU32> {
- bits<5> rd;
- bits<5> rs;
- bits<5> rt;
- bits<16> imm16;
- bits<16> imm16_2;
-}
+class ALU32Inst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = ALU32_2op_tc_1_SLOT0123>
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeALU32>, OpcodeHexagon;
// ALU64 Instruction Class in V2/V3.
// XTYPE Instruction Class in V4.
// Definition of the instruction class NOT CHANGED.
// Name of the Instruction Class changed from ALU64 to XTYPE from V2/V3 to V4.
-class ALU64Type<dag outs, dag ins, string asmstr, list<dag> pattern>
- : InstHexagon<outs, ins, asmstr, pattern, "", ALU64> {
- bits<5> rd;
- bits<5> rs;
- bits<5> rt;
- bits<16> imm16;
- bits<16> imm16_2;
-}
+class ALU64Inst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = ALU64_tc_2_SLOT23>
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeXTYPE>,
+ OpcodeHexagon;
+
+class ALU64_acc<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = ALU64_tc_2_SLOT23>
+ : ALU64Inst<outs, ins, asmstr, pattern, cstr, itin>;
+
// M Instruction Class in V2/V3.
// XTYPE Instruction Class in V4.
// Definition of the instruction class NOT CHANGED.
// Name of the Instruction Class changed from M to XTYPE from V2/V3 to V4.
-class MInst<dag outs, dag ins, string asmstr, list<dag> pattern>
- : InstHexagon<outs, ins, asmstr, pattern, "", M> {
- bits<5> rd;
- bits<5> rs;
- bits<5> rt;
-}
+class MInst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = M_tc_3x_SLOT23>
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeXTYPE>,
+ OpcodeHexagon;
// M Instruction Class in V2/V3.
// XTYPE Instruction Class in V4.
// Definition of the instruction class NOT CHANGED.
// Name of the Instruction Class changed from M to XTYPE from V2/V3 to V4.
-class MInst_acc<dag outs, dag ins, string asmstr, list<dag> pattern,
- string cstr>
- : InstHexagon<outs, ins, asmstr, pattern, cstr, M> {
- bits<5> rd;
- bits<5> rs;
- bits<5> rt;
-}
+class MInst_acc<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = M_tc_2_SLOT23>
+ : MInst<outs, ins, asmstr, pattern, cstr, itin>;
// S Instruction Class in V2/V3.
// XTYPE Instruction Class in V4.
// Definition of the instruction class NOT CHANGED.
// Name of the Instruction Class changed from S to XTYPE from V2/V3 to V4.
-class SInst<dag outs, dag ins, string asmstr, list<dag> pattern>
-//: InstHexagon<outs, ins, asmstr, pattern, cstr, !if(V4T, XTYPE_V4, M)> {
- : InstHexagon<outs, ins, asmstr, pattern, "", S> {
-// : InstHexagon<outs, ins, asmstr, pattern, "", S> {
- bits<5> rd;
- bits<5> rs;
- bits<5> rt;
-}
+class SInst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = S_2op_tc_1_SLOT23>
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeXTYPE>,
+ OpcodeHexagon;
// S Instruction Class in V2/V3.
// XTYPE Instruction Class in V4.
// Definition of the instruction class NOT CHANGED.
// Name of the Instruction Class changed from S to XTYPE from V2/V3 to V4.
-class SInst_acc<dag outs, dag ins, string asmstr, list<dag> pattern,
- string cstr>
- : InstHexagon<outs, ins, asmstr, pattern, cstr, S> {
-// : InstHexagon<outs, ins, asmstr, pattern, cstr, S> {
-// : InstHexagon<outs, ins, asmstr, pattern, cstr, !if(V4T, XTYPE_V4, S)> {
- bits<5> rd;
- bits<5> rs;
- bits<5> rt;
-}
+class SInst_acc<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = S_3op_tc_1_SLOT23>
+ : SInst<outs, ins, asmstr, pattern, cstr, itin>;
// J Instruction Class in V2/V3/V4.
// Definition of the instruction class NOT CHANGED.
-class JType<dag outs, dag ins, string asmstr, list<dag> pattern>
- : InstHexagon<outs, ins, asmstr, pattern, "", J> {
- bits<16> imm16;
-}
+class JInst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = J_tc_2early_SLOT23>
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeJ>, OpcodeHexagon;
// JR Instruction Class in V2/V3/V4.
// Definition of the instruction class NOT CHANGED.
-class JRType<dag outs, dag ins, string asmstr, list<dag> pattern>
- : InstHexagon<outs, ins, asmstr, pattern, "", JR> {
- bits<5> rs;
- bits<5> pu; // Predicate register
-}
+class JRInst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = J_tc_2early_SLOT2>
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeJR>, OpcodeHexagon;
// CR Instruction Class in V2/V3/V4.
// Definition of the instruction class NOT CHANGED.
-class CRInst<dag outs, dag ins, string asmstr, list<dag> pattern>
- : InstHexagon<outs, ins, asmstr, pattern, "", CR> {
- bits<5> rs;
- bits<10> imm10;
-}
-
-
-class Pseudo<dag outs, dag ins, string asmstr, list<dag> pattern>
- : InstHexagon<outs, ins, asmstr, pattern, "", PSEUDO>;
-
+class CRInst<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = CR_tc_2early_SLOT3>
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeCR>, OpcodeHexagon;
+
+let isCodeGenOnly = 1, isPseudo = 1 in
+class Endloop<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = J_tc_2early_SLOT0123>
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, itin, TypeENDLOOP>,
+ OpcodeHexagon;
+
+let isCodeGenOnly = 1, isPseudo = 1 in
+class Pseudo<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "">
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, PSEUDO, TypePSEUDO>,
+ OpcodeHexagon;
+
+let isCodeGenOnly = 1, isPseudo = 1 in
+class PseudoM<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr="">
+ : InstHexagon<outs, ins, asmstr, pattern, cstr, PSEUDOM, TypePSEUDO>,
+ OpcodeHexagon;
//===----------------------------------------------------------------------===//
-// Intruction Classes Definitions -
+// Instruction Classes Definitions -
//===----------------------------------------------------------------------===//
//
// ALU32 patterns
//.
-class ALU32_rr<dag outs, dag ins, string asmstr, list<dag> pattern>
- : ALU32Type<outs, ins, asmstr, pattern> {
-}
+class ALU32_rr<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = ALU32_2op_tc_1_SLOT0123>
+ : ALU32Inst<outs, ins, asmstr, pattern, cstr, itin>;
-class ALU32_ir<dag outs, dag ins, string asmstr, list<dag> pattern>
- : ALU32Type<outs, ins, asmstr, pattern> {
- let rt{0-4} = 0;
-}
+class ALU32_ir<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = ALU32_2op_tc_1_SLOT0123>
+ : ALU32Inst<outs, ins, asmstr, pattern, cstr, itin>;
-class ALU32_ri<dag outs, dag ins, string asmstr, list<dag> pattern>
- : ALU32Type<outs, ins, asmstr, pattern> {
- let rt{0-4} = 0;
-}
+class ALU32_ri<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = ALU32_2op_tc_1_SLOT0123>
+ : ALU32Inst<outs, ins, asmstr, pattern, cstr, itin>;
-class ALU32_ii<dag outs, dag ins, string asmstr, list<dag> pattern>
- : ALU32Type<outs, ins, asmstr, pattern> {
- let rt{0-4} = 0;
-}
+class ALU32_ii<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = ALU32_2op_tc_1_SLOT0123>
+ : ALU32Inst<outs, ins, asmstr, pattern, cstr, itin>;
//
// ALU64 patterns.
//
-class ALU64_rr<dag outs, dag ins, string asmstr, list<dag> pattern>
- : ALU64Type<outs, ins, asmstr, pattern> {
-}
-
-// J Type Instructions.
-class JInst<dag outs, dag ins, string asmstr, list<dag> pattern>
- : JType<outs, ins, asmstr, pattern> {
-}
-
-// JR type Instructions.
-class JRInst<dag outs, dag ins, string asmstr, list<dag> pattern>
- : JRType<outs, ins, asmstr, pattern> {
-}
+class ALU64_rr<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = ALU64_tc_1_SLOT23>
+ : ALU64Inst<outs, ins, asmstr, pattern, cstr, itin>;
+class ALU64_ri<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "", InstrItinClass itin = ALU64_tc_1_SLOT23>
+ : ALU64Inst<outs, ins, asmstr, pattern, cstr, itin>;
// Post increment ST Instruction.
-class STInstPI<dag outs, dag ins, string asmstr, list<dag> pattern, string cstr>
- : STInstPost<outs, ins, asmstr, pattern, cstr> {
- let rt{0-4} = 0;
-}
+class STInstPI<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "">
+ : STInst<outs, ins, asmstr, pattern, cstr>;
+
+let mayStore = 1 in
+class STInst2PI<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "">
+ : STInst<outs, ins, asmstr, pattern, cstr>;
// Post increment LD Instruction.
-class LDInstPI<dag outs, dag ins, string asmstr, list<dag> pattern, string cstr>
- : LDInstPost<outs, ins, asmstr, pattern, cstr> {
- let rt{0-4} = 0;
-}
+class LDInstPI<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "">
+ : LDInst<outs, ins, asmstr, pattern, cstr>;
+
+let mayLoad = 1 in
+class LDInst2PI<dag outs, dag ins, string asmstr, list<dag> pattern = [],
+ string cstr = "">
+ : LDInst<outs, ins, asmstr, pattern, cstr>;
//===----------------------------------------------------------------------===//
// V4 Instruction Format Definitions +