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//===- ARMScheduleV6.td - ARM v6 Scheduling Definitions ----*- 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 ARM v6 processors.
//
//===----------------------------------------------------------------------===//
// Model based on ARM1176
//
// Functional Units
def V6_Pipe : FuncUnit; // pipeline
// Scheduling information derived from "ARM1176JZF-S Technical Reference Manual"
//
def ARMV6Itineraries : ProcessorItineraries<
[V6_Pipe], [
//
// No operand cycles
InstrItinData<IIC_iALUx , [InstrStage<1, [V6_Pipe]>]>,
//
// Binary Instructions that produce a result
InstrItinData<IIC_iALUi , [InstrStage<1, [V6_Pipe]>], [2, 2]>,
InstrItinData<IIC_iALUr , [InstrStage<1, [V6_Pipe]>], [2, 2, 2]>,
InstrItinData<IIC_iALUsi , [InstrStage<1, [V6_Pipe]>], [2, 2, 1]>,
InstrItinData<IIC_iALUsr , [InstrStage<2, [V6_Pipe]>], [3, 3, 2, 1]>,
//
// Unary Instructions that produce a result
InstrItinData<IIC_iUNAr , [InstrStage<1, [V6_Pipe]>], [2, 2]>,
InstrItinData<IIC_iUNAsi , [InstrStage<1, [V6_Pipe]>], [2, 1]>,
InstrItinData<IIC_iUNAsr , [InstrStage<2, [V6_Pipe]>], [3, 2, 1]>,
//
// Compare instructions
InstrItinData<IIC_iCMPi , [InstrStage<1, [V6_Pipe]>], [2]>,
InstrItinData<IIC_iCMPr , [InstrStage<1, [V6_Pipe]>], [2, 2]>,
InstrItinData<IIC_iCMPsi , [InstrStage<1, [V6_Pipe]>], [2, 1]>,
InstrItinData<IIC_iCMPsr , [InstrStage<2, [V6_Pipe]>], [3, 2, 1]>,
//
// Move instructions, unconditional
InstrItinData<IIC_iMOVi , [InstrStage<1, [V6_Pipe]>], [2]>,
InstrItinData<IIC_iMOVr , [InstrStage<1, [V6_Pipe]>], [2, 2]>,
InstrItinData<IIC_iMOVsi , [InstrStage<1, [V6_Pipe]>], [2, 1]>,
InstrItinData<IIC_iMOVsr , [InstrStage<2, [V6_Pipe]>], [3, 2, 1]>,
//
// Move instructions, conditional
InstrItinData<IIC_iCMOVi , [InstrStage<1, [V6_Pipe]>], [3]>,
InstrItinData<IIC_iCMOVr , [InstrStage<1, [V6_Pipe]>], [3, 2]>,
InstrItinData<IIC_iCMOVsi , [InstrStage<1, [V6_Pipe]>], [3, 1]>,
InstrItinData<IIC_iCMOVsr , [InstrStage<1, [V6_Pipe]>], [4, 2, 1]>,
// Integer multiply pipeline
//
InstrItinData<IIC_iMUL16 , [InstrStage<1, [V6_Pipe]>], [4, 1, 1]>,
InstrItinData<IIC_iMAC16 , [InstrStage<1, [V6_Pipe]>], [4, 1, 1, 2]>,
InstrItinData<IIC_iMUL32 , [InstrStage<2, [V6_Pipe]>], [5, 1, 1]>,
InstrItinData<IIC_iMAC32 , [InstrStage<2, [V6_Pipe]>], [5, 1, 1, 2]>,
InstrItinData<IIC_iMUL64 , [InstrStage<3, [V6_Pipe]>], [6, 1, 1]>,
InstrItinData<IIC_iMAC64 , [InstrStage<3, [V6_Pipe]>], [6, 1, 1, 2]>,
// Integer load pipeline
//
// Immediate offset
InstrItinData<IIC_iLoadi , [InstrStage<1, [V6_Pipe]>], [4, 1]>,
//
// Register offset
InstrItinData<IIC_iLoadr , [InstrStage<1, [V6_Pipe]>], [4, 1, 1]>,
//
// Scaled register offset, issues over 2 cycles
InstrItinData<IIC_iLoadsi , [InstrStage<2, [V6_Pipe]>], [5, 2, 1]>,
//
// Immediate offset with update
InstrItinData<IIC_iLoadiu , [InstrStage<1, [V6_Pipe]>], [4, 2, 1]>,
//
// Register offset with update
InstrItinData<IIC_iLoadru , [InstrStage<1, [V6_Pipe]>], [4, 2, 1, 1]>,
//
// Scaled register offset with update, issues over 2 cycles
InstrItinData<IIC_iLoadsiu , [InstrStage<2, [V6_Pipe]>], [5, 2, 2, 1]>,
//
// Load multiple
InstrItinData<IIC_iLoadm , [InstrStage<3, [V6_Pipe]>]>,
// Integer store pipeline
//
// Immediate offset
InstrItinData<IIC_iStorei , [InstrStage<1, [V6_Pipe]>], [2, 1]>,
//
// Register offset
InstrItinData<IIC_iStorer , [InstrStage<1, [V6_Pipe]>], [2, 1, 1]>,
//
// Scaled register offset, issues over 2 cycles
InstrItinData<IIC_iStoresi , [InstrStage<2, [V6_Pipe]>], [2, 2, 1]>,
//
// Immediate offset with update
InstrItinData<IIC_iStoreiu , [InstrStage<1, [V6_Pipe]>], [2, 2, 1]>,
//
// Register offset with update
InstrItinData<IIC_iStoreru , [InstrStage<1, [V6_Pipe]>], [2, 2, 1, 1]>,
//
// Scaled register offset with update, issues over 2 cycles
InstrItinData<IIC_iStoresiu, [InstrStage<2, [V6_Pipe]>], [2, 2, 2, 1]>,
//
// Store multiple
InstrItinData<IIC_iStorem , [InstrStage<3, [V6_Pipe]>]>,
// Branch
//
// no delay slots, so the latency of a branch is unimportant
InstrItinData<IIC_Br , [InstrStage<1, [V6_Pipe]>]>,
// VFP
// Issue through integer pipeline, and execute in NEON unit. We assume
// RunFast mode so that NFP pipeline is used for single-precision when
// possible.
//
// FP Special Register to Integer Register File Move
InstrItinData<IIC_fpSTAT , [InstrStage<1, [V6_Pipe]>], [3]>,
//
// Single-precision FP Unary
InstrItinData<IIC_fpUNA32 , [InstrStage<1, [V6_Pipe]>], [5, 2]>,
//
// Double-precision FP Unary
InstrItinData<IIC_fpUNA64 , [InstrStage<1, [V6_Pipe]>], [5, 2]>,
//
// Single-precision FP Compare
InstrItinData<IIC_fpCMP32 , [InstrStage<1, [V6_Pipe]>], [2, 2]>,
//
// Double-precision FP Compare
InstrItinData<IIC_fpCMP64 , [InstrStage<1, [V6_Pipe]>], [2, 2]>,
//
// Single to Double FP Convert
InstrItinData<IIC_fpCVTSD , [InstrStage<1, [V6_Pipe]>], [5, 2]>,
//
// Double to Single FP Convert
InstrItinData<IIC_fpCVTDS , [InstrStage<1, [V6_Pipe]>], [5, 2]>,
//
// Single-Precision FP to Integer Convert
InstrItinData<IIC_fpCVTSI , [InstrStage<1, [V6_Pipe]>], [9, 2]>,
//
// Double-Precision FP to Integer Convert
InstrItinData<IIC_fpCVTDI , [InstrStage<1, [V6_Pipe]>], [9, 2]>,
//
// Integer to Single-Precision FP Convert
InstrItinData<IIC_fpCVTIS , [InstrStage<1, [V6_Pipe]>], [9, 2]>,
//
// Integer to Double-Precision FP Convert
InstrItinData<IIC_fpCVTID , [InstrStage<1, [V6_Pipe]>], [9, 2]>,
//
// Single-precision FP ALU
InstrItinData<IIC_fpALU32 , [InstrStage<1, [V6_Pipe]>], [9, 2, 2]>,
//
// Double-precision FP ALU
InstrItinData<IIC_fpALU64 , [InstrStage<1, [V6_Pipe]>], [9, 2, 2]>,
//
// Single-precision FP Multiply
InstrItinData<IIC_fpMUL32 , [InstrStage<1, [V6_Pipe]>], [9, 2, 2]>,
//
// Double-precision FP Multiply
InstrItinData<IIC_fpMUL64 , [InstrStage<2, [V6_Pipe]>], [9, 2, 2]>,
//
// Single-precision FP MAC
InstrItinData<IIC_fpMAC32 , [InstrStage<1, [V6_Pipe]>], [9, 2, 2, 2]>,
//
// Double-precision FP MAC
InstrItinData<IIC_fpMAC64 , [InstrStage<2, [V6_Pipe]>], [9, 2, 2, 2]>,
//
// Single-precision FP DIV
InstrItinData<IIC_fpDIV32 , [InstrStage<15, [V6_Pipe]>], [20, 2, 2]>,
//
// Double-precision FP DIV
InstrItinData<IIC_fpDIV64 , [InstrStage<29, [V6_Pipe]>], [34, 2, 2]>,
//
// Single-precision FP SQRT
InstrItinData<IIC_fpSQRT32 , [InstrStage<15, [V6_Pipe]>], [20, 2, 2]>,
//
// Double-precision FP SQRT
InstrItinData<IIC_fpSQRT64 , [InstrStage<29, [V6_Pipe]>], [34, 2, 2]>,
//
// Single-precision FP Load
InstrItinData<IIC_fpLoad32 , [InstrStage<1, [V6_Pipe]>], [5, 2, 2]>,
//
// Double-precision FP Load
InstrItinData<IIC_fpLoad64 , [InstrStage<1, [V6_Pipe]>], [5, 2, 2]>,
//
// FP Load Multiple
InstrItinData<IIC_fpLoadm , [InstrStage<3, [V6_Pipe]>]>,
//
// Single-precision FP Store
InstrItinData<IIC_fpStore32 , [InstrStage<1, [V6_Pipe]>], [2, 2, 2]>,
//
// Double-precision FP Store
// use FU_Issue to enforce the 1 load/store per cycle limit
InstrItinData<IIC_fpStore64 , [InstrStage<1, [V6_Pipe]>], [2, 2, 2]>,
//
// FP Store Multiple
InstrItinData<IIC_fpStorem , [InstrStage<3, [V6_Pipe]>]>
]>;
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