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bc0bdb26da
In preparation for adding scheduling definitions for the POWER7, split some PPC itinerary classes so that the P7's latencies and hazards can be better described. For the most part, this means differentiating indexed from non-index pre-increment loads and stores. Also, differentiate single from double-precision sqrt. No functionality change intended (except for a more-specific latency for single-precision sqrt on the A2). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195980 91177308-0d34-0410-b5e6-96231b3b80d8
170 lines
7.9 KiB
TableGen
170 lines
7.9 KiB
TableGen
//===- PPCScheduleA2.td - PPC A2 Scheduling Definitions --*- tablegen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// Primary reference:
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// A2 Processor User's Manual.
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// IBM (as updated in) 2010.
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//===----------------------------------------------------------------------===//
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// Functional units on the PowerPC A2 chip sets
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//
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def A2_XU : FuncUnit; // A2_XU pipeline
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def A2_FU : FuncUnit; // FI pipeline
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//
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// This file defines the itinerary class data for the PPC A2 processor.
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//
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//===----------------------------------------------------------------------===//
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def PPCA2Itineraries : ProcessorItineraries<
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[A2_XU, A2_FU], [], [
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InstrItinData<IIC_IntSimple, [InstrStage<1, [A2_XU]>],
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[1, 0, 0]>,
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InstrItinData<IIC_IntGeneral, [InstrStage<1, [A2_XU]>],
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[2, 0, 0]>,
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InstrItinData<IIC_IntCompare, [InstrStage<1, [A2_XU]>],
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[2, 0, 0]>,
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InstrItinData<IIC_IntDivW, [InstrStage<1, [A2_XU]>],
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[39, 0, 0]>,
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InstrItinData<IIC_IntDivD, [InstrStage<1, [A2_XU]>],
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[71, 0, 0]>,
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InstrItinData<IIC_IntMulHW, [InstrStage<1, [A2_XU]>],
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[5, 0, 0]>,
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InstrItinData<IIC_IntMulHWU, [InstrStage<1, [A2_XU]>],
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[5, 0, 0]>,
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InstrItinData<IIC_IntMulLI, [InstrStage<1, [A2_XU]>],
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[6, 0, 0]>,
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InstrItinData<IIC_IntRotate, [InstrStage<1, [A2_XU]>],
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[2, 0, 0]>,
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InstrItinData<IIC_IntRotateD, [InstrStage<1, [A2_XU]>],
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[2, 0, 0]>,
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InstrItinData<IIC_IntRotateDI, [InstrStage<1, [A2_XU]>],
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[2, 0, 0]>,
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InstrItinData<IIC_IntShift, [InstrStage<1, [A2_XU]>],
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[2, 0, 0]>,
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InstrItinData<IIC_IntTrapW, [InstrStage<1, [A2_XU]>],
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[2, 0]>,
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InstrItinData<IIC_IntTrapD, [InstrStage<1, [A2_XU]>],
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[2, 0]>,
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InstrItinData<IIC_BrB, [InstrStage<1, [A2_XU]>],
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[6, 0, 0]>,
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InstrItinData<IIC_BrCR, [InstrStage<1, [A2_XU]>],
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[1, 0, 0]>,
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InstrItinData<IIC_BrMCR, [InstrStage<1, [A2_XU]>],
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[5, 0, 0]>,
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InstrItinData<IIC_BrMCRX, [InstrStage<1, [A2_XU]>],
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[1, 0, 0]>,
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InstrItinData<IIC_LdStDCBA, [InstrStage<1, [A2_XU]>],
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[1, 0, 0]>,
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InstrItinData<IIC_LdStDCBF, [InstrStage<1, [A2_XU]>],
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[1, 0, 0]>,
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InstrItinData<IIC_LdStDCBI, [InstrStage<1, [A2_XU]>],
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[1, 0, 0]>,
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InstrItinData<IIC_LdStLoad, [InstrStage<1, [A2_XU]>],
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[6, 0, 0]>,
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InstrItinData<IIC_LdStLoadUpd, [InstrStage<1, [A2_XU]>],
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[6, 8, 0, 0]>,
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InstrItinData<IIC_LdStLoadUpdX,[InstrStage<1, [A2_XU]>],
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[6, 8, 0, 0]>,
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InstrItinData<IIC_LdStLDU, [InstrStage<1, [A2_XU]>],
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[6, 0, 0]>,
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InstrItinData<IIC_LdStLDUX, [InstrStage<1, [A2_XU]>],
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[6, 0, 0]>,
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InstrItinData<IIC_LdStStore, [InstrStage<1, [A2_XU]>],
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[0, 0, 0]>,
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InstrItinData<IIC_LdStStoreUpd,[InstrStage<1, [A2_XU]>],
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[2, 0, 0, 0]>,
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InstrItinData<IIC_LdStICBI, [InstrStage<1, [A2_XU]>],
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[16, 0, 0]>,
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InstrItinData<IIC_LdStSTFD, [InstrStage<1, [A2_XU]>],
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[0, 0, 0]>,
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InstrItinData<IIC_LdStSTFDU, [InstrStage<1, [A2_XU]>],
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[2, 0, 0, 0]>,
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InstrItinData<IIC_LdStLFD, [InstrStage<1, [A2_XU]>],
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[7, 0, 0]>,
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InstrItinData<IIC_LdStLFDU, [InstrStage<1, [A2_XU]>],
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[7, 9, 0, 0]>,
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InstrItinData<IIC_LdStLFDUX, [InstrStage<1, [A2_XU]>],
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[7, 9, 0, 0]>,
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InstrItinData<IIC_LdStLHA, [InstrStage<1, [A2_XU]>],
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[6, 0, 0]>,
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InstrItinData<IIC_LdStLHAU, [InstrStage<1, [A2_XU]>],
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[6, 8, 0, 0]>,
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InstrItinData<IIC_LdStLHAUX, [InstrStage<1, [A2_XU]>],
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[6, 8, 0, 0]>,
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InstrItinData<IIC_LdStLWARX, [InstrStage<1, [A2_XU]>],
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[82, 0, 0]>, // L2 latency
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InstrItinData<IIC_LdStSTD, [InstrStage<1, [A2_XU]>],
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[0, 0, 0]>,
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InstrItinData<IIC_LdStSTDU, [InstrStage<1, [A2_XU]>],
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[2, 0, 0, 0]>,
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InstrItinData<IIC_LdStSTDUX, [InstrStage<1, [A2_XU]>],
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[2, 0, 0, 0]>,
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InstrItinData<IIC_LdStSTDCX, [InstrStage<1, [A2_XU]>],
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[82, 0, 0]>, // L2 latency
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InstrItinData<IIC_LdStSTWCX, [InstrStage<1, [A2_XU]>],
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[82, 0, 0]>, // L2 latency
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InstrItinData<IIC_LdStSync, [InstrStage<1, [A2_XU]>],
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[6]>,
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InstrItinData<IIC_SprISYNC, [InstrStage<1, [A2_XU]>],
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[16]>,
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InstrItinData<IIC_SprMTMSR, [InstrStage<1, [A2_XU]>],
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[16, 0]>,
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InstrItinData<IIC_SprMFCR, [InstrStage<1, [A2_XU]>],
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[6, 0]>,
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InstrItinData<IIC_SprMFCRF, [InstrStage<1, [A2_XU]>],
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[1, 0]>,
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InstrItinData<IIC_SprMFMSR, [InstrStage<1, [A2_XU]>],
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[4, 0]>,
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InstrItinData<IIC_SprMFSPR, [InstrStage<1, [A2_XU]>],
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[6, 0]>,
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InstrItinData<IIC_SprMFTB, [InstrStage<1, [A2_XU]>],
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[4, 0]>,
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InstrItinData<IIC_SprMTSPR, [InstrStage<1, [A2_XU]>],
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[6, 0]>,
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InstrItinData<IIC_SprRFI, [InstrStage<1, [A2_XU]>],
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[16]>,
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InstrItinData<IIC_SprSC, [InstrStage<1, [A2_XU]>],
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[16]>,
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InstrItinData<IIC_FPGeneral, [InstrStage<1, [A2_FU]>],
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[6, 0, 0]>,
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InstrItinData<IIC_FPAddSub, [InstrStage<1, [A2_FU]>],
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[6, 0, 0]>,
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InstrItinData<IIC_FPCompare, [InstrStage<1, [A2_FU]>],
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[5, 0, 0]>,
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InstrItinData<IIC_FPDivD, [InstrStage<1, [A2_FU]>],
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[72, 0, 0]>,
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InstrItinData<IIC_FPDivS, [InstrStage<1, [A2_FU]>],
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[59, 0, 0]>,
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InstrItinData<IIC_FPSqrtD, [InstrStage<1, [A2_FU]>],
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[69, 0, 0]>,
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InstrItinData<IIC_FPSqrtS, [InstrStage<1, [A2_FU]>],
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[65, 0, 0]>,
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InstrItinData<IIC_FPFused, [InstrStage<1, [A2_FU]>],
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[6, 0, 0, 0]>,
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InstrItinData<IIC_FPRes, [InstrStage<1, [A2_FU]>],
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[6, 0]>
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]>;
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// ===---------------------------------------------------------------------===//
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// A2 machine model for scheduling and other instruction cost heuristics.
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def PPCA2Model : SchedMachineModel {
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let IssueWidth = 1; // 1 instruction is dispatched per cycle.
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let MinLatency = -1; // OperandCycles are interpreted as MinLatency.
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let LoadLatency = 6; // Optimistic load latency assuming bypass.
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// This is overriden by OperandCycles if the
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// Itineraries are queried instead.
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let MispredictPenalty = 13;
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let Itineraries = PPCA2Itineraries;
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}
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