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llvm-6502/lib/Target/PowerPC/PPCScheduleE5500.td
Hal Finkel ec716cecda [PowerPC] Better scheduling for isel on P7/P8 
isel is actually a cracked instruction on the P7/P8, and must start a dispatch
group. The scheduling model should reflect this so that we don't bunch too many
of them together when possible.

Thanks to Bill Schmidt and Pat Haugen for helping to sort this out.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227758 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-01 17:52:16 +00:00

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TableGen
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//===-- PPCScheduleE500mc.td - e5500 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 e5500 64-bit
// Power processor.
//
// All information is derived from the "e5500 Core Reference Manual",
// Freescale Document Number e5500RM, Rev. 1, 03/2012.
//
//===----------------------------------------------------------------------===//
// Relevant functional units in the Freescale e5500 core
// (These are the same as for the e500mc)
//
// * 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 E5500_DIS0 : FuncUnit;
def E5500_DIS1 : FuncUnit;
// * Execute
// 6 pipelined execution units: SFX0, SFX1, BU, FPU, LSU, CFX.
// The CFX has a bypass path, allowing non-divide instructions to execute
// while a divide instruction is being executed.
def E5500_SFX0 : FuncUnit; // Simple unit 0
def E5500_SFX1 : FuncUnit; // Simple unit 1
def E5500_BU : FuncUnit; // Branch unit
def E5500_CFX_DivBypass
: FuncUnit; // CFX divide bypass path
def E5500_CFX_0 : FuncUnit; // CFX pipeline stage 0
def E5500_CFX_1 : FuncUnit; // CFX pipeline stage 1
def E5500_LSU_0 : FuncUnit; // LSU pipeline
def E5500_FPU_0 : FuncUnit; // FPU pipeline
def E5500_GPR_Bypass : Bypass;
def E5500_FPR_Bypass : Bypass;
def E5500_CR_Bypass : Bypass;
def PPCE5500Itineraries : ProcessorItineraries<
[E5500_DIS0, E5500_DIS1, E5500_SFX0, E5500_SFX1, E5500_BU,
E5500_CFX_DivBypass, E5500_CFX_0, E5500_CFX_1,
E5500_LSU_0, E5500_FPU_0],
[E5500_CR_Bypass, E5500_GPR_Bypass, E5500_FPR_Bypass], [
InstrItinData<IIC_IntSimple, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1]>],
[5, 2, 2], // Latency = 1
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_IntGeneral, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1]>],
[5, 2, 2], // Latency = 1
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_IntISEL, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1]>],
[5, 2, 2, 2], // Latency = 1
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass,
E5500_CR_Bypass]>,
InstrItinData<IIC_IntCompare, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1]>],
[6, 2, 2], // Latency = 1 or 2
[E5500_CR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_IntDivD, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_CFX_0], 0>,
InstrStage<26, [E5500_CFX_DivBypass]>],
[30, 2, 2], // Latency= 4..26, Repeat rate= 4..26
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_IntDivW, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_CFX_0], 0>,
InstrStage<16, [E5500_CFX_DivBypass]>],
[20, 2, 2], // Latency= 4..16, Repeat rate= 4..16
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_IntMFFS, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_FPU_0]>],
[11], // Latency = 7, Repeat rate = 1
[E5500_FPR_Bypass]>,
InstrItinData<IIC_IntMTFSB0, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<7, [E5500_FPU_0]>],
[11, 2, 2], // Latency = 7, Repeat rate = 7
[NoBypass, NoBypass, NoBypass]>,
InstrItinData<IIC_IntMulHD, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_CFX_0], 0>,
InstrStage<2, [E5500_CFX_1]>],
[9, 2, 2], // Latency = 4..7, Repeat rate = 2..4
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_IntMulHW, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_CFX_0], 0>,
InstrStage<1, [E5500_CFX_1]>],
[8, 2, 2], // Latency = 4, Repeat rate = 1
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_IntMulHWU, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_CFX_0], 0>,
InstrStage<1, [E5500_CFX_1]>],
[8, 2, 2], // Latency = 4, Repeat rate = 1
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_IntMulLI, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_CFX_0], 0>,
InstrStage<2, [E5500_CFX_1]>],
[8, 2, 2], // Latency = 4 or 5, Repeat = 2
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_IntRotate, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1]>],
[5, 2, 2], // Latency = 1
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_IntRotateD, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<2, [E5500_SFX0, E5500_SFX1]>],
[6, 2, 2], // Latency = 2, Repeat rate = 2
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_IntRotateDI, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1]>],
[5, 2, 2], // Latency = 1, Repeat rate = 1
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_IntShift, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<2, [E5500_SFX0, E5500_SFX1]>],
[6, 2, 2], // Latency = 2, Repeat rate = 2
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_IntTrapW, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<2, [E5500_SFX0]>],
[6, 2], // Latency = 2, Repeat rate = 2
[E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_BrB, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_BU]>],
[5, 2], // Latency = 1
[NoBypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_BrCR, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_BU]>],
[5, 2, 2], // Latency = 1
[E5500_CR_Bypass,
E5500_CR_Bypass, E5500_CR_Bypass]>,
InstrItinData<IIC_BrMCR, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_BU]>],
[5, 2], // Latency = 1
[E5500_CR_Bypass, E5500_CR_Bypass]>,
InstrItinData<IIC_BrMCRX, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_CFX_0]>],
[5, 2, 2], // Latency = 1
[E5500_CR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStDCBA, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStDCBF, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStDCBI, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStLoad, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3
[E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStLoadUpd, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[E5500_GPR_Bypass, E5500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStLoadUpdX,[InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[E5500_GPR_Bypass, E5500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStLD, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStLDARX, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<3, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 3
[E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStLDU, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[E5500_GPR_Bypass, E5500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStLDUX, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[E5500_GPR_Bypass, E5500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStStore, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[NoBypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStStoreUpd,[InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[NoBypass, E5500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStICBI, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[NoBypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStSTFD, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2, 2], // Latency = 3, Repeat rate = 1
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStSTFDU, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2, 2], // Latency = 3, Repeat rate = 1
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStLFD, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[8, 2, 2], // Latency = 4, Repeat rate = 1
[E5500_FPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStLFDU, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[8, 2, 2], // Latency = 4, Repeat rate = 1
[E5500_FPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStLFDUX, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[8, 2, 2], // Latency = 4, Repeat rate = 1
[E5500_FPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStLHA, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3
[E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStLHAU, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[E5500_GPR_Bypass, E5500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStLHAUX, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[E5500_GPR_Bypass, E5500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStLMW, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<4, [E5500_LSU_0]>],
[8, 2], // Latency = r+3, Repeat rate = r+3
[NoBypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStLWARX, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<3, [E5500_LSU_0]>],
[7, 2, 2], // Latency = 3, Repeat rate = 3
[E5500_GPR_Bypass,
E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStSTD, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[NoBypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStSTDCX, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[NoBypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStSTDU, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[NoBypass, E5500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStSTDUX, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[NoBypass, E5500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStSTWCX, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0]>],
[7, 2], // Latency = 3, Repeat rate = 1
[NoBypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_LdStSync, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0]>]>,
InstrItinData<IIC_SprMTMSR, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<2, [E5500_CFX_0]>],
[6, 2], // Latency = 2, Repeat rate = 4
[E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_SprTLBSYNC, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_LSU_0], 0>]>,
InstrItinData<IIC_SprMFCR, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<5, [E5500_CFX_0]>],
[9, 2], // Latency = 5, Repeat rate = 5
[E5500_GPR_Bypass, E5500_CR_Bypass]>,
InstrItinData<IIC_SprMFCRF, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<5, [E5500_CFX_0]>],
[9, 2], // Latency = 5, Repeat rate = 5
[E5500_GPR_Bypass, E5500_CR_Bypass]>,
InstrItinData<IIC_SprMFMSR, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<4, [E5500_SFX0]>],
[8, 2], // Latency = 4, Repeat rate = 4
[E5500_GPR_Bypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_SprMFSPR, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_CFX_0]>],
[5], // Latency = 1, Repeat rate = 1
[E5500_GPR_Bypass]>,
InstrItinData<IIC_SprMFTB, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<4, [E5500_CFX_0]>],
[8, 2], // Latency = 4, Repeat rate = 4
[NoBypass, E5500_GPR_Bypass]>,
InstrItinData<IIC_SprMTSPR, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_SFX0, E5500_SFX1]>],
[5], // Latency = 1, Repeat rate = 1
[E5500_GPR_Bypass]>,
InstrItinData<IIC_FPGeneral, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_FPU_0]>],
[11, 2, 2], // Latency = 7, Repeat rate = 1
[E5500_FPR_Bypass,
E5500_FPR_Bypass, E5500_FPR_Bypass]>,
InstrItinData<IIC_FPAddSub, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_FPU_0]>],
[11, 2, 2], // Latency = 7, Repeat rate = 1
[E5500_FPR_Bypass,
E5500_FPR_Bypass, E5500_FPR_Bypass]>,
InstrItinData<IIC_FPCompare, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_FPU_0]>],
[11, 2, 2], // Latency = 7, Repeat rate = 1
[E5500_CR_Bypass,
E5500_FPR_Bypass, E5500_FPR_Bypass]>,
InstrItinData<IIC_FPDivD, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<31, [E5500_FPU_0]>],
[39, 2, 2], // Latency = 35, Repeat rate = 31
[E5500_FPR_Bypass,
E5500_FPR_Bypass, E5500_FPR_Bypass]>,
InstrItinData<IIC_FPDivS, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<16, [E5500_FPU_0]>],
[24, 2, 2], // Latency = 20, Repeat rate = 16
[E5500_FPR_Bypass,
E5500_FPR_Bypass, E5500_FPR_Bypass]>,
InstrItinData<IIC_FPFused, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<1, [E5500_FPU_0]>],
[11, 2, 2, 2], // Latency = 7, Repeat rate = 1
[E5500_FPR_Bypass,
E5500_FPR_Bypass, E5500_FPR_Bypass,
E5500_FPR_Bypass]>,
InstrItinData<IIC_FPRes, [InstrStage<1, [E5500_DIS0, E5500_DIS1], 0>,
InstrStage<2, [E5500_FPU_0]>],
[12, 2], // Latency = 8, Repeat rate = 2
[E5500_FPR_Bypass, E5500_FPR_Bypass]>
]>;
// ===---------------------------------------------------------------------===//
// e5500 machine model for scheduling and other instruction cost heuristics.
def PPCE5500Model : SchedMachineModel {
let IssueWidth = 2; // 2 micro-ops are dispatched per cycle.
let MinLatency = -1; // OperandCycles are interpreted as MinLatency.
let LoadLatency = 6; // Optimistic load latency assuming bypass.
// This is overriden by OperandCycles if the
// Itineraries are queried instead.
let Itineraries = PPCE5500Itineraries;
}
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