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//=-LanaiSchedule.td - Lanai Scheduling Definitions --*- tablegen -*-=========//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
def ALU_FU : FuncUnit;
def LDST_FU : FuncUnit;
def IIC_ALU : InstrItinClass;
def IIC_LD : InstrItinClass;
def IIC_ST : InstrItinClass;
def IIC_LDSW : InstrItinClass;
def IIC_STSW : InstrItinClass;
def LanaiItinerary : ProcessorItineraries<[ALU_FU, LDST_FU],[],[
InstrItinData<IIC_LD, [InstrStage<1, [LDST_FU]>]>,
InstrItinData<IIC_ST, [InstrStage<1, [LDST_FU]>]>,
InstrItinData<IIC_LDSW, [InstrStage<2, [LDST_FU]>]>,
InstrItinData<IIC_STSW, [InstrStage<2, [LDST_FU]>]>,
InstrItinData<IIC_ALU, [InstrStage<1, [ALU_FU]>]>
]>;
def LanaiSchedModel : SchedMachineModel {
// Cycles for loads to access the cache [default = -1]
let LoadLatency = 2;
// Max micro-ops that can be buffered for optimized loop dispatch/execution.
// [default = -1]
let LoopMicroOpBufferSize = 0;
// Allow scheduler to assign default model to any unrecognized opcodes.
// [default = 1]
let CompleteModel = 0;
// Max micro-ops that may be scheduled per cycle. [default = 1]
let IssueWidth = 1;
// Extra cycles for a mispredicted branch. [default = -1]
let MispredictPenalty = 10;
// Enable Post RegAlloc Scheduler pass. [default = 0]
let PostRAScheduler = 0;
// Max micro-ops that can be buffered. [default = -1]
let MicroOpBufferSize = 0;
// Per-cycle resources tables. [default = NoItineraries]
let Itineraries = LanaiItinerary;
}
def ALU : ProcResource<1> { let BufferSize = 0; }
def LdSt : ProcResource<1> { let BufferSize = 0; }
def WriteLD : SchedWrite;
def WriteST : SchedWrite;
def WriteLDSW : SchedWrite;
def WriteSTSW : SchedWrite;
def WriteALU : SchedWrite;
let SchedModel = LanaiSchedModel in {
def : WriteRes<WriteLD, [LdSt]> { let Latency = 2; }
def : WriteRes<WriteST, [LdSt]> { let Latency = 2; }
def : WriteRes<WriteLDSW, [LdSt]> { let Latency = 2; }
def : WriteRes<WriteSTSW, [LdSt]> { let Latency = 4; }
def : WriteRes<WriteALU, [ALU]> { let Latency = 1; }
}
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