PPCScheduleE500mc.td [plain text]
//===-- PPCScheduleE500mc.td - e500mc Scheduling Defs ------*- tablegen -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the itinerary class data for the Freescale e500mc 32-bit
// Power processor.
//
// All information is derived from the "e500mc Core Reference Manual",
// Freescale Document Number E500MCRM, Rev. 1, 03/2012.
//
//===----------------------------------------------------------------------===//
// Relevant functional units in the Freescale e500mc core:
//
// * Decode & Dispatch
// Can dispatch up to 2 instructions per clock cycle to either the GPR Issue
// queues (GIQx), FP Issue Queue (FIQ), 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: SFX0, SFX1, BU, FPU, LSU, CFX.
// Some instructions can only execute in SFX0 but not SFX1.
// The CFX has a bypass path, allowing non-divide instructions to execute
// while a divide instruction is executed.
def E500_SFX0 : FuncUnit; // Simple unit 0
def E500_SFX1 : FuncUnit; // Simple unit 1
def E500_BU : FuncUnit; // Branch unit
def E500_CFX_DivBypass
: FuncUnit; // CFX divide bypass path
def E500_CFX_0 : FuncUnit; // CFX pipeline
def E500_LSU_0 : FuncUnit; // LSU pipeline
def E500_FPU_0 : FuncUnit; // FPU pipeline
def E500_GPR_Bypass : Bypass;
def E500_FPR_Bypass : Bypass;
def E500_CR_Bypass : Bypass;
def PPCE500mcItineraries : ProcessorItineraries<
[E500_DIS0, E500_DIS1, E500_SFX0, E500_SFX1, E500_BU, E500_CFX_DivBypass,
E500_CFX_0, E500_LSU_0, E500_FPU_0],
[E500_CR_Bypass, E500_GPR_Bypass, E500_FPR_Bypass], [
InstrItinData<IIC_IntSimple, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SFX0, E500_SFX1]>],
[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_SFX0, E500_SFX1]>],
[4, 1, 1], // Latency = 1
[E500_GPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_IntCompare, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SFX0, E500_SFX1]>],
[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_CFX_0], 0>,
InstrStage<14, [E500_CFX_DivBypass]>],
[17, 1, 1], // Latency=4..35, Repeat= 4..35
[E500_GPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_IntMFFS, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<8, [E500_FPU_0]>],
[11], // Latency = 8
[E500_FPR_Bypass]>,
InstrItinData<IIC_IntMTFSB0, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<8, [E500_FPU_0]>],
[11, 1, 1], // Latency = 8
[NoBypass, NoBypass, NoBypass]>,
InstrItinData<IIC_IntMulHW, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_CFX_0]>],
[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<1, [E500_CFX_0]>],
[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<1, [E500_CFX_0]>],
[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_SFX0, E500_SFX1]>],
[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_SFX0, E500_SFX1]>],
[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_SFX0]>],
[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_SFX0, E500_SFX1]>],
[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_SFX0, E500_SFX1], 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_SFX0, E500_SFX1], 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_LdStStoreUpd,[InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SFX0, E500_SFX1], 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_LdStSTFD, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1, 1], // Latency = 3
[E500_GPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStSTFDU, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SFX0, E500_SFX1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1, 1], // Latency = 3
[E500_GPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStLFD, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_LSU_0]>],
[7, 1, 1], // Latency = 4
[E500_FPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStLFDU, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SFX0, E500_SFX1], 0>,
InstrStage<1, [E500_LSU_0]>],
[7, 1, 1], // Latency = 4
[E500_FPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStLFDUX, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SFX0, E500_SFX1], 0>,
InstrStage<1, [E500_LSU_0]>],
[7, 1, 1], // Latency = 4
[E500_FPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass],
2>, // 2 micro-ops
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_SFX0, E500_SFX1], 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_SFX0, E500_SFX1], 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_SFX0]>],
[7, 1],
[E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_SprMTMSR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<2, [E500_SFX0, E500_SFX1]>],
[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_SFX0]>],
[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_SFX0]>],
[8, 1],
[E500_GPR_Bypass, E500_CR_Bypass]>,
InstrItinData<IIC_SprMFCRF, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<5, [E500_SFX0]>],
[8, 1],
[E500_GPR_Bypass, E500_CR_Bypass]>,
InstrItinData<IIC_SprMFMSR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<4, [E500_SFX0]>],
[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_SFX0, E500_SFX1]>],
[4, 1], // Latency = 1, Repeat rate = 1
[E500_GPR_Bypass, E500_CR_Bypass]>,
InstrItinData<IIC_SprMFTB, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<4, [E500_SFX0]>],
[7, 1], // Latency = 4, Repeat rate = 4
[NoBypass, E500_GPR_Bypass]>,
InstrItinData<IIC_SprMTSPR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SFX0, E500_SFX1]>],
[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_SFX0]>],
[4, 1],
[NoBypass, E500_GPR_Bypass]>,
InstrItinData<IIC_FPGeneral, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<2, [E500_FPU_0]>],
[11, 1, 1], // Latency = 8, Repeat rate = 2
[E500_FPR_Bypass,
E500_FPR_Bypass, E500_FPR_Bypass]>,
InstrItinData<IIC_FPAddSub, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<4, [E500_FPU_0]>],
[13, 1, 1], // Latency = 10, Repeat rate = 4
[E500_FPR_Bypass,
E500_FPR_Bypass, E500_FPR_Bypass]>,
InstrItinData<IIC_FPCompare, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<2, [E500_FPU_0]>],
[11, 1, 1], // Latency = 8, Repeat rate = 2
[E500_CR_Bypass,
E500_FPR_Bypass, E500_FPR_Bypass]>,
InstrItinData<IIC_FPDivD, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<68, [E500_FPU_0]>],
[71, 1, 1], // Latency = 68, Repeat rate = 68
[E500_FPR_Bypass,
E500_FPR_Bypass, E500_FPR_Bypass]>,
InstrItinData<IIC_FPDivS, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<38, [E500_FPU_0]>],
[41, 1, 1], // Latency = 38, Repeat rate = 38
[E500_FPR_Bypass,
E500_FPR_Bypass, E500_FPR_Bypass]>,
InstrItinData<IIC_FPFused, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<4, [E500_FPU_0]>],
[13, 1, 1, 1], // Latency = 10, Repeat rate = 4
[E500_FPR_Bypass,
E500_FPR_Bypass, E500_FPR_Bypass,
E500_FPR_Bypass]>,
InstrItinData<IIC_FPRes, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<38, [E500_FPU_0]>],
[41, 1], // Latency = 38, Repeat rate = 38
[E500_FPR_Bypass, E500_FPR_Bypass]>
]>;
// ===---------------------------------------------------------------------===//
// e500mc machine model for scheduling and other instruction cost heuristics.
def PPCE500mcModel : SchedMachineModel {
let IssueWidth = 2; // 2 micro-ops are dispatched per cycle.
let MinLatency = -1; // OperandCycles are interpreted as MinLatency.
let LoadLatency = 5; // Optimistic load latency assuming bypass.
// This is overriden by OperandCycles if the
// Itineraries are queried instead.
let Itineraries = PPCE500mcItineraries;
}