| //===-- PPCScheduleE500.td - e500 Scheduling Defs ------*- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines the itinerary class data for the Freescale e500 32-bit |
| // Power processor. |
| // |
| // All information is derived from the "e500 Core Reference Manual", |
| // Freescale Document Number E500MCRM, Rev. 1, 03/2012. |
| // |
| //===----------------------------------------------------------------------===// |
| // Relevant functional units in the Freescale e500 core: |
| // |
| // * Decode & Dispatch |
| // Can dispatch up to 2 instructions per clock cycle to either the GPR Issue |
| // queues (GIQx) or Branch issue queue (BIQ). |
| def E500_DIS0 : FuncUnit; // Dispatch stage - insn 1 |
| def E500_DIS1 : FuncUnit; // Dispatch stage - insn 2 |
| |
| // * Execute |
| // 6 pipelined execution units: SU0, SU1, BU, LSU, MU. |
| // Some instructions can only execute in SU0 but not SU1. |
| def E500_SU0 : FuncUnit; // Simple unit 0 |
| def E500_SU1 : FuncUnit; // Simple unit 1 |
| def E500_BU : FuncUnit; // Branch unit |
| def E500_MU : FuncUnit; // MU pipeline |
| def E500_LSU_0 : FuncUnit; // LSU pipeline |
| |
| def E500_GPR_Bypass : Bypass; |
| def E500_CR_Bypass : Bypass; |
| def E500_DivBypass : Bypass; |
| |
| def PPCE500Itineraries : ProcessorItineraries< |
| [E500_DIS0, E500_DIS1, E500_SU0, E500_SU1, E500_BU, |
| E500_MU, E500_LSU_0], |
| [E500_CR_Bypass, E500_GPR_Bypass, E500_DivBypass], [ |
| InstrItinData<IIC_IntSimple, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1]>], |
| [4, 1, 1], // Latency = 1 |
| [E500_GPR_Bypass, |
| E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_IntGeneral, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1]>], |
| [4, 1, 1], // Latency = 1 |
| [E500_GPR_Bypass, |
| E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_IntISEL, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1]>], |
| [4, 1, 1, 1], // Latency = 1 |
| [E500_GPR_Bypass, |
| E500_GPR_Bypass, E500_GPR_Bypass, |
| E500_CR_Bypass]>, |
| InstrItinData<IIC_IntCompare, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1]>], |
| [5, 1, 1], // Latency = 1 or 2 |
| [E500_CR_Bypass, |
| E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_IntDivW, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_MU], 0>, |
| InstrStage<14, [E500_MU]>], |
| [17, 1, 1], // Latency=4..35, Repeat= 4..35 |
| [E500_GPR_Bypass, |
| E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_IntMulHW, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<4, [E500_MU]>], |
| [7, 1, 1], // Latency = 4, Repeat rate = 1 |
| [E500_GPR_Bypass, |
| E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_IntMulHWU, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<4, [E500_MU]>], |
| [7, 1, 1], // Latency = 4, Repeat rate = 1 |
| [E500_GPR_Bypass, |
| E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_IntMulLI, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<4, [E500_MU]>], |
| [7, 1, 1], // Latency = 4, Repeat rate = 1 |
| [E500_GPR_Bypass, |
| E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_IntRotate, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1]>], |
| [4, 1, 1], // Latency = 1 |
| [E500_GPR_Bypass, |
| E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_IntShift, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1]>], |
| [4, 1, 1], // Latency = 1 |
| [E500_GPR_Bypass, |
| E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_IntTrapW, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<2, [E500_SU0]>], |
| [5, 1], // Latency = 2, Repeat rate = 2 |
| [E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_BrB, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_BU]>], |
| [4, 1], // Latency = 1 |
| [NoBypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_BrCR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_BU]>], |
| [4, 1, 1], // Latency = 1 |
| [E500_CR_Bypass, |
| E500_CR_Bypass, E500_CR_Bypass]>, |
| InstrItinData<IIC_BrMCR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_BU]>], |
| [4, 1], // Latency = 1 |
| [E500_CR_Bypass, E500_CR_Bypass]>, |
| InstrItinData<IIC_BrMCRX, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1]>], |
| [4, 1, 1], // Latency = 1 |
| [E500_CR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_LdStDCBA, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [6, 1], // Latency = 3, Repeat rate = 1 |
| [E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_LdStDCBF, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [6, 1], // Latency = 3 |
| [E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_LdStDCBI, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [6, 1], // Latency = 3 |
| [E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_LdStLoad, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [6, 1], // Latency = 3 |
| [E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_LdStLoadUpd, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [6, 1], // Latency = 3 |
| [E500_GPR_Bypass, E500_GPR_Bypass], |
| 2>, // 2 micro-ops |
| InstrItinData<IIC_LdStLoadUpdX,[InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [6, 1], // Latency = 3 |
| [E500_GPR_Bypass, E500_GPR_Bypass], |
| 2>, // 2 micro-ops |
| InstrItinData<IIC_LdStStore, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [6, 1], // Latency = 3 |
| [NoBypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_LdStSTU, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [6, 1], // Latency = 3 |
| [NoBypass, E500_GPR_Bypass], |
| 2>, // 2 micro-ops |
| InstrItinData<IIC_LdStSTUX, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [6, 1], // Latency = 3 |
| [NoBypass, E500_GPR_Bypass], |
| 2>, // 2 micro-ops |
| InstrItinData<IIC_LdStICBI, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [6, 1], // Latency = 3 |
| [NoBypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_LdStLHA, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [6, 1], // Latency = 3 |
| [E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_LdStLHAU, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [6, 1], // Latency = 3 |
| [E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_LdStLHAUX, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [6, 1], // Latency = 3 |
| [E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_LdStLMW, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [7, 1], // Latency = r+3 |
| [NoBypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_LdStLWARX, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<3, [E500_LSU_0]>], |
| [6, 1, 1], // Latency = 3, Repeat rate = 3 |
| [E500_GPR_Bypass, |
| E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_LdStSTWCX, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_LSU_0]>], |
| [6, 1], // Latency = 3 |
| [NoBypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_LdStSync, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_LSU_0]>]>, |
| InstrItinData<IIC_SprMFSR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<4, [E500_SU0]>], |
| [7, 1], |
| [E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_SprMTMSR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<2, [E500_SU0, E500_SU1]>], |
| [5, 1], // Latency = 2, Repeat rate = 4 |
| [E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_SprMTSR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0]>], |
| [5, 1], |
| [NoBypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_SprTLBSYNC, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_LSU_0], 0>]>, |
| InstrItinData<IIC_SprMFCR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<5, [E500_SU0]>], |
| [8, 1], |
| [E500_GPR_Bypass, E500_CR_Bypass]>, |
| InstrItinData<IIC_SprMFCRF, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<5, [E500_SU0]>], |
| [8, 1], |
| [E500_GPR_Bypass, E500_CR_Bypass]>, |
| InstrItinData<IIC_SprMFPMR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<4, [E500_SU0]>], |
| [7, 1], // Latency = 4, Repeat rate = 4 |
| [E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_SprMFMSR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<4, [E500_SU0]>], |
| [7, 1], // Latency = 4, Repeat rate = 4 |
| [E500_GPR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_SprMFSPR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1]>], |
| [4, 1], // Latency = 1, Repeat rate = 1 |
| [E500_GPR_Bypass, E500_CR_Bypass]>, |
| InstrItinData<IIC_SprMTPMR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0]>], |
| [4, 1], // Latency = 1, Repeat rate = 1 |
| [E500_CR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_SprMFTB, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<4, [E500_SU0]>], |
| [7, 1], // Latency = 4, Repeat rate = 4 |
| [NoBypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_SprMTSPR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0, E500_SU1]>], |
| [4, 1], // Latency = 1, Repeat rate = 1 |
| [E500_CR_Bypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_SprMTSRIN, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0]>], |
| [4, 1], |
| [NoBypass, E500_GPR_Bypass]>, |
| InstrItinData<IIC_FPDGeneral, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<6, [E500_MU]>], |
| [9, 1, 1], // Latency = 6, Repeat rate = 1 |
| [NoBypass]>, |
| InstrItinData<IIC_FPSGeneral, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<4, [E500_MU]>], |
| [7, 1, 1], // Latency = 4, Repeat rate = 1 |
| [NoBypass]>, |
| InstrItinData<IIC_FPDivD, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<32, [E500_MU]>], |
| [35, 1, 1], // Latency = 32, Repeat rate = 32 |
| [E500_DivBypass]>, |
| InstrItinData<IIC_FPDivS, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<29, [E500_MU]>], |
| [32, 1, 1], // Latency = 29, Repeat rate = 29 |
| [E500_DivBypass]>, |
| InstrItinData<IIC_VecGeneral, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<1, [E500_SU0]>], |
| [4, 1, 1], // Latency = 1, Repeat rate = 1 |
| [NoBypass]>, |
| InstrItinData<IIC_VecComplex, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>, |
| InstrStage<4, [E500_MU]>], |
| [7, 1, 1], // Latency = 4, Repeat rate = 1 |
| [NoBypass]> |
| ]>; |
| |
| // ===---------------------------------------------------------------------===// |
| // e500 machine model for scheduling and other instruction cost heuristics. |
| |
| def PPCE500Model : SchedMachineModel { |
| let IssueWidth = 2; // 2 micro-ops are dispatched per cycle. |
| let LoadLatency = 5; // Optimistic load latency assuming bypass. |
| // This is overriden by OperandCycles if the |
| // Itineraries are queried instead. |
| |
| let CompleteModel = 0; |
| |
| let Itineraries = PPCE500Itineraries; |
| } |
