| //===-- PPCScheduleP8.td - PPC P8 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 POWER8 processor. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // Scheduling for the P8 involves tracking two types of resources: |
| // 1. The dispatch bundle slots |
| // 2. The functional unit resources |
| |
| // Dispatch units: |
| def P8_DU1 : FuncUnit; |
| def P8_DU2 : FuncUnit; |
| def P8_DU3 : FuncUnit; |
| def P8_DU4 : FuncUnit; |
| def P8_DU5 : FuncUnit; |
| def P8_DU6 : FuncUnit; |
| def P8_DU7 : FuncUnit; // Only branch instructions will use DU7,DU8 |
| def P8_DU8 : FuncUnit; |
| |
| // 10 insns per cycle (2-LU, 2-LSU, 2-FXU, 2-FPU, 1-CRU, 1-BRU). |
| |
| def P8_LU1 : FuncUnit; // Loads or fixed-point operations 1 |
| def P8_LU2 : FuncUnit; // Loads or fixed-point operations 2 |
| |
| // Load/Store pipelines can handle Stores, fixed-point loads, and simple |
| // fixed-point operations. |
| def P8_LSU1 : FuncUnit; // Load/Store pipeline 1 |
| def P8_LSU2 : FuncUnit; // Load/Store pipeline 2 |
| |
| // Fixed Point unit |
| def P8_FXU1 : FuncUnit; // FX pipeline 1 |
| def P8_FXU2 : FuncUnit; // FX pipeline 2 |
| |
| // The Floating-Point Unit (FPU) and Vector Media Extension (VMX) units |
| // are combined on P7 and newer into a Vector Scalar Unit (VSU). |
| // The P8 Instruction latency documents still refers to the unit as the |
| // FPU, so keep in mind that FPU==VSU. |
| // In contrast to the P7, the VMX units on P8 are symmetric, so no need to |
| // split vector integer ops or 128-bit load/store/perms to the specific units. |
| def P8_FPU1 : FuncUnit; // VS pipeline 1 |
| def P8_FPU2 : FuncUnit; // VS pipeline 2 |
| |
| def P8_CRU : FuncUnit; // CR unit (CR logicals and move-from-SPRs) |
| def P8_BRU : FuncUnit; // BR unit |
| |
| def P8Itineraries : ProcessorItineraries< |
| [P8_DU1, P8_DU2, P8_DU3, P8_DU4, P8_DU5, P8_DU6, P8_DU7, P8_DU8, |
| P8_LU1, P8_LU2, P8_LSU1, P8_LSU2, P8_FXU1, P8_FXU2, |
| P8_FPU1, P8_FPU2, P8_CRU, P8_BRU], [], [ |
| InstrItinData<IIC_IntSimple , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2, |
| P8_LU1, P8_LU2, |
| P8_LSU1, P8_LSU2]>], |
| [1, 1, 1]>, |
| InstrItinData<IIC_IntGeneral , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2, P8_LU1, |
| P8_LU2, P8_LSU1, P8_LSU2]>], |
| [1, 1, 1]>, |
| InstrItinData<IIC_IntISEL, [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2], 0>, |
| InstrStage<1, [P8_BRU]>], |
| [1, 1, 1, 1]>, |
| InstrItinData<IIC_IntCompare , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [1, 1, 1]>, |
| InstrItinData<IIC_IntDivW , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<15, [P8_FXU1, P8_FXU2]>], |
| [15, 1, 1]>, |
| InstrItinData<IIC_IntDivD , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<23, [P8_FXU1, P8_FXU2]>], |
| [23, 1, 1]>, |
| InstrItinData<IIC_IntMulHW , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [4, 1, 1]>, |
| InstrItinData<IIC_IntMulHWU , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [4, 1, 1]>, |
| InstrItinData<IIC_IntMulLI , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [4, 1, 1]>, |
| InstrItinData<IIC_IntRotate , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [1, 1, 1]>, |
| InstrItinData<IIC_IntRotateD , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [1, 1, 1]>, |
| InstrItinData<IIC_IntShift , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [1, 1, 1]>, |
| InstrItinData<IIC_IntTrapW , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [1, 1]>, |
| InstrItinData<IIC_IntTrapD , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [1, 1]>, |
| InstrItinData<IIC_BrB , [InstrStage<1, [P8_DU7, P8_DU8], 0>, |
| InstrStage<1, [P8_BRU]>], |
| [3, 1, 1]>, |
| // FIXME - the Br* groups below are not branch related, so should probably |
| // be renamed. |
| // IIC_BrCR consists of the cr* instructions. (crand,crnor,creqv, etc). |
| // and should be 'First' in dispatch. |
| InstrItinData<IIC_BrCR , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_CRU]>], |
| [3, 1, 1]>, |
| // IIC_BrMCR consists of the mcrf instruction. |
| InstrItinData<IIC_BrMCR , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_CRU]>], |
| [3, 1, 1]>, |
| // IIC_BrMCRX consists of mcrxr (obsolete instruction) and mtcrf, which |
| // should be first in the dispatch group. |
| InstrItinData<IIC_BrMCRX , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [3, 1, 1]>, |
| InstrItinData<IIC_BrMCRX , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [3, 1]>, |
| InstrItinData<IIC_LdStLoad , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2, |
| P8_LU1, P8_LU2]>], |
| [2, 1, 1]>, |
| InstrItinData<IIC_LdStLoadUpd , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2, |
| P8_LU1, P8_LU2 ], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [2, 2, 1, 1]>, |
| // Update-Indexed form loads/stores are no longer first and last in the |
| // dispatch group. They are simply cracked, so require DU1,DU2. |
| InstrItinData<IIC_LdStLoadUpdX, [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2, |
| P8_LU1, P8_LU2], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [3, 3, 1, 1]>, |
| InstrItinData<IIC_LdStLD , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2, |
| P8_LU1, P8_LU2]>], |
| [2, 1, 1]>, |
| InstrItinData<IIC_LdStLDU , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2, |
| P8_LU1, P8_LU2], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [2, 2, 1, 1]>, |
| InstrItinData<IIC_LdStLDUX , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2, |
| P8_LU1, P8_LU2], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [3, 3, 1, 1]>, |
| InstrItinData<IIC_LdStLFD , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_LU1, P8_LU2]>], |
| [3, 1, 1]>, |
| InstrItinData<IIC_LdStLVecX , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_LU1, P8_LU2]>], |
| [3, 1, 1]>, |
| InstrItinData<IIC_LdStLFDU , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_LU1, P8_LU2], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [3, 3, 1, 1]>, |
| InstrItinData<IIC_LdStLFDUX , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_LU1, P8_LU2], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [3, 3, 1, 1]>, |
| InstrItinData<IIC_LdStLHA , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2, |
| P8_LU1, P8_LU2], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2, |
| P8_LU1, P8_LU2]>], |
| [3, 1, 1]>, |
| InstrItinData<IIC_LdStLHAU , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2, |
| P8_LU1, P8_LU2], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [4, 4, 1, 1]>, |
| // first+last in dispatch group. |
| InstrItinData<IIC_LdStLHAUX , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_DU3], 0>, |
| InstrStage<1, [P8_DU4], 0>, |
| InstrStage<1, [P8_DU5], 0>, |
| InstrStage<1, [P8_DU6], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2, |
| P8_LU1, P8_LU2], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [4, 4, 1, 1]>, |
| InstrItinData<IIC_LdStLWA , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2, |
| P8_LU1, P8_LU2]>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [3, 1, 1]>, |
| InstrItinData<IIC_LdStLWARX, [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_DU3], 0>, |
| InstrStage<1, [P8_DU4], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2, |
| P8_LU1, P8_LU2]>], |
| [3, 1, 1]>, |
| // first+last |
| InstrItinData<IIC_LdStLDARX, [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_DU3], 0>, |
| InstrStage<1, [P8_DU4], 0>, |
| InstrStage<1, [P8_DU5], 0>, |
| InstrStage<1, [P8_DU6], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2, |
| P8_LU1, P8_LU2]>], |
| [3, 1, 1]>, |
| InstrItinData<IIC_LdStLMW , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2, |
| P8_LU1, P8_LU2]>], |
| [2, 1, 1]>, |
| // Stores are dual-issued from the issue queue, so may only take up one |
| // dispatch slot. The instruction will be broken into two IOPS. The agen |
| // op is issued to the LSU, and the data op (register fetch) is issued |
| // to either the LU (GPR store) or the VSU (FPR store). |
| InstrItinData<IIC_LdStStore , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2]>, |
| InstrStage<1, [P8_LU1, P8_LU2]>], |
| [1, 1, 1]>, |
| InstrItinData<IIC_LdStSTD , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_LU1, P8_LU2, |
| P8_LSU1, P8_LSU2]>] |
| [1, 1, 1]>, |
| InstrItinData<IIC_LdStSTDU , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_LU1, P8_LU2, |
| P8_LSU1, P8_LSU2], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [2, 1, 1, 1]>, |
| // First+last |
| InstrItinData<IIC_LdStSTDUX , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_DU3], 0>, |
| InstrStage<1, [P8_DU4], 0>, |
| InstrStage<1, [P8_DU5], 0>, |
| InstrStage<1, [P8_DU6], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [2, 1, 1, 1]>, |
| InstrItinData<IIC_LdStSTFD , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [1, 1, 1]>, |
| InstrItinData<IIC_LdStSTFDU , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [2, 1, 1, 1]>, |
| InstrItinData<IIC_LdStSTVEBX , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [1, 1, 1]>, |
| InstrItinData<IIC_LdStSTDCX , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_DU3], 0>, |
| InstrStage<1, [P8_DU4], 0>, |
| InstrStage<1, [P8_DU5], 0>, |
| InstrStage<1, [P8_DU6], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2], 0>, |
| InstrStage<1, [P8_LU1, P8_LU2]>], |
| [1, 1, 1]>, |
| InstrItinData<IIC_LdStSTWCX , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_DU2], 0>, |
| InstrStage<1, [P8_DU3], 0>, |
| InstrStage<1, [P8_DU4], 0>, |
| InstrStage<1, [P8_DU5], 0>, |
| InstrStage<1, [P8_DU6], 0>, |
| InstrStage<1, [P8_LSU1, P8_LSU2], 0>, |
| InstrStage<1, [P8_LU1, P8_LU2]>], |
| [1, 1, 1]>, |
| InstrItinData<IIC_SprMFCR , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_CRU]>], |
| [6, 1]>, |
| InstrItinData<IIC_SprMFCRF , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_CRU]>], |
| [3, 1]>, |
| InstrItinData<IIC_SprMTSPR , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_FXU1, P8_FXU2]>], |
| [4, 1]>, // mtctr |
| InstrItinData<IIC_FPGeneral , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [5, 1, 1]>, |
| InstrItinData<IIC_FPAddSub , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [5, 1, 1]>, |
| InstrItinData<IIC_FPCompare , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [8, 1, 1]>, |
| InstrItinData<IIC_FPDivD , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [33, 1, 1]>, |
| InstrItinData<IIC_FPDivS , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [27, 1, 1]>, |
| InstrItinData<IIC_FPSqrtD , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [44, 1, 1]>, |
| InstrItinData<IIC_FPSqrtS , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [32, 1, 1]>, |
| InstrItinData<IIC_FPFused , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [5, 1, 1, 1]>, |
| InstrItinData<IIC_FPRes , [InstrStage<1, [P8_DU1, P8_DU2, P8_DU3, |
| P8_DU4, P8_DU5, P8_DU6], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [5, 1, 1]>, |
| InstrItinData<IIC_VecGeneral , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [2, 1, 1]>, |
| InstrItinData<IIC_VecVSL , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [2, 1, 1]>, |
| InstrItinData<IIC_VecVSR , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [2, 1, 1]>, |
| InstrItinData<IIC_VecFP , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [6, 1, 1]>, |
| InstrItinData<IIC_VecFPCompare, [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [6, 1, 1]>, |
| InstrItinData<IIC_VecFPRound , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [6, 1, 1]>, |
| InstrItinData<IIC_VecComplex , [InstrStage<1, [P8_DU1], 0>, |
| InstrStage<1, [P8_FPU1, P8_FPU2]>], |
| [7, 1, 1]>, |
| InstrItinData<IIC_VecPerm , [InstrStage<1, [P8_DU1, P8_DU2], 0>, |
| InstrStage<1, [P8_FPU2, P8_FPU2]>], |
| [3, 1, 1]> |
| ]>; |
| |
| // ===---------------------------------------------------------------------===// |
| // P8 machine model for scheduling and other instruction cost heuristics. |
| // P8 has an 8 insn dispatch group (6 non-branch, 2 branch) and can issue up |
| // to 10 insns per cycle (2-LU, 2-LSU, 2-FXU, 2-FPU, 1-CRU, 1-BRU). |
| |
| def P8Model : SchedMachineModel { |
| let IssueWidth = 8; // up to 8 instructions dispatched per cycle. |
| // up to six non-branch instructions. |
| // up to two branches in a dispatch group. |
| |
| let LoadLatency = 3; // Optimistic load latency assuming bypass. |
| // This is overriden by OperandCycles if the |
| // Itineraries are queried instead. |
| let MispredictPenalty = 16; |
| |
| // Try to make sure we have at least 10 dispatch groups in a loop. |
| let LoopMicroOpBufferSize = 60; |
| |
| let CompleteModel = 0; |
| |
| let Itineraries = P8Itineraries; |
| } |
| |