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1include "llvm/Target/Target.td"2 3def TestTarget : Target;4 5class Encoding : Instruction {6 field bits<8> Inst;7}8 9class TestReg<string name, bits<1> enc> : Register<name, []> {10 let HWEncoding{15-1} = 0;11 let HWEncoding{0} = enc;12}13 14def R0 : TestReg<"R0", 0>;15def R1 : TestReg<"R1", 1>;16def Reg : RegisterClass<"TestTarget", [i32], 32, (sequence "R%d", 0, 1)>;17 18class TestInstructionWithConstraints<string cstr> : Encoding {19 dag OutOperandList = (outs Reg:$dest1, Reg:$dest2);20 dag InOperandList = (ins Reg:$src1, Reg:$src2);21 string AsmString = "mnemonic $dest1, $dest2, $src1, $src2";22 string AsmVariantName = "";23 let Constraints = cstr;24 field bits<1> dest1;25 field bits<1> dest2;26 field bits<1> src1;27 field bits<1> src2;28 let Inst{7-4} = 0b1010;29 let Inst{3} = dest1{0};30 let Inst{2} = dest2{0};31 let Inst{1} = src1{0};32 let Inst{0} = src2{0};33}34