1//===------ RISCVInstrInfoZicfiss.td - RISC-V Zicfiss -*- tablegen -*------===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8 9//===----------------------------------------------------------------------===// 10// Instruction class templates 11//===----------------------------------------------------------------------===// 12 13class RVC_SSInst<bits<5> rs1val, RegisterClass reg_class, string opcodestr> : 14 RVInst16<(outs), (ins reg_class:$rs1), opcodestr, "$rs1", [], InstFormatOther> { 15 let Inst{15-13} = 0b011; 16 let Inst{12} = 0; 17 let Inst{11-7} = rs1val; 18 let Inst{6-2} = 0b00000; 19 let Inst{1-0} = 0b01; 20 let DecoderMethod = "decodeCSSPushPopchk"; 21} 22 23//===----------------------------------------------------------------------===// 24// Instructions 25//===----------------------------------------------------------------------===// 26 27let Predicates = [HasStdExtZicfiss] in { 28let Uses = [SSP], Defs = [SSP], hasSideEffects = 0, mayLoad = 1, mayStore = 0 in 29def SSPOPCHK : RVInstI<0b100, OPC_SYSTEM, (outs), (ins GPRX1X5:$rs1), "sspopchk", 30 "$rs1"> { 31 let rd = 0; 32 let imm12 = 0b110011011100; 33} // Uses = [SSP], Defs = [SSP], hasSideEffects = 0, mayLoad = 1, mayStore = 0 34 35let Uses = [SSP], hasSideEffects = 0, mayLoad = 0, mayStore = 0 in { 36def SSRDP : RVInstI<0b100, OPC_SYSTEM, (outs GPRNoX0:$rd), (ins), "ssrdp", "$rd"> { 37 let imm12 = 0b110011011100; 38 let rs1 = 0b00000; 39} 40} // Uses = [SSP], hasSideEffects = 0, mayLoad = 0, mayStore = 0 41 42let Uses = [SSP], Defs = [SSP], hasSideEffects = 0, mayLoad = 0, mayStore = 1 in 43def SSPUSH : RVInstR<0b1100111, 0b100, OPC_SYSTEM, (outs), (ins GPRX1X5:$rs2), 44 "sspush", "$rs2"> { 45 let rd = 0b00000; 46 let rs1 = 0b00000; 47} 48} // Predicates = [HasStdExtZicfiss] 49 50let Predicates = [HasStdExtZicfiss, HasStdExtZcmop], 51 DecoderNamespace = "Zicfiss" in { 52let Uses = [SSP], Defs = [SSP], hasSideEffects = 0, mayLoad = 0, mayStore = 1 in 53def C_SSPUSH : RVC_SSInst<0b00001, GPRX1, "c.sspush">; 54 55let Uses = [SSP], Defs = [SSP], hasSideEffects = 0, mayLoad = 1, mayStore = 0 in 56def C_SSPOPCHK : RVC_SSInst<0b00101, GPRX5, "c.sspopchk">; 57} // Predicates = [HasStdExtZicfiss, HasStdExtZcmop] 58 59let Predicates = [HasStdExtZicfiss] in 60defm SSAMOSWAP_W : AMO_rr_aq_rl<0b01001, 0b010, "ssamoswap.w">; 61 62let Predicates = [HasStdExtZicfiss, IsRV64] in 63defm SSAMOSWAP_D : AMO_rr_aq_rl<0b01001, 0b011, "ssamoswap.d">; 64 65//===----------------------------------------------------------------------===/ 66// Compress Instruction tablegen backend. 67//===----------------------------------------------------------------------===// 68 69let Predicates = [HasStdExtZicfiss, HasStdExtZcmop] in { 70def : CompressPat<(SSPUSH X1), (C_SSPUSH X1)>; 71def : CompressPat<(SSPOPCHK X5), (C_SSPOPCHK X5)>; 72} // Predicates = [HasStdExtZicfiss, HasStdExtZcmop] 73