MBlazeSchedule5.td [plain text]
//===- MBlazeSchedule5.td - MBlaze Scheduling Definitions --*- tablegen -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// MBlaze instruction itineraries for the five stage pipeline.
//===----------------------------------------------------------------------===//
def MBlazePipe5Itineraries : ProcessorItineraries<
[IF,ID,EX,MA,WB], [], [
// ALU instruction with one destination register and either two register
// source operands or one register source operand and one immediate operand.
// The instruction takes one cycle to execute in each of the stages. The
// two source operands are read during the decode stage and the result is
// ready after the execute stage.
InstrItinData< IIC_ALU,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<1,[MA]> // one cycle in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 2 // result ready after two cycles
, 1 // first operand read after one cycle
, 1 ]>, // second operand read after one cycle
// ALU multiply instruction with one destination register and either two
// register source operands or one register source operand and one immediate
// operand. The instruction takes one cycle to execute in each of the
// pipeline stages. The two source operands are read during the decode stage
// and the result is ready after the execute stage.
InstrItinData< IIC_ALUm,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<1,[MA]> // one cycle in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 2 // result ready after two cycles
, 1 // first operand read after one cycle
, 1 ]>, // second operand read after one cycle
// ALU divide instruction with one destination register two register source
// operands. The instruction takes one cycle to execute in each the pipeline
// stages except the memory access stage, which takes 31 cycles. The two
// source operands are read during the decode stage and the result is ready
// after the memory access stage.
InstrItinData< IIC_ALUd,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<31,[MA]> // 31 cycles in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 33 // result ready after 33 cycles
, 1 // first operand read after one cycle
, 1 ]>, // second operand read after one cycle
// Shift instruction with one destination register and either two register
// source operands or one register source operand and one immediate operand.
// The instruction takes one cycle to execute in each of the pipeline stages.
// The two source operands are read during the decode stage and the result is
// ready after the memory access stage.
InstrItinData< IIC_SHT,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<1,[MA]> // one cycle in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 3 // result ready after three cycles
, 1 // first operand read after one cycle
, 1 ]>, // second operand read after one cycle
// Branch instruction with one source operand register. The instruction takes
// one cycle to execute in each of the pipeline stages. The source operand is
// read during the decode stage.
InstrItinData< IIC_BR,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<1,[MA]> // one cycle in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 1 ]>, // first operand read after one cycle
// Conditional branch instruction with two source operand registers. The
// instruction takes one cycle to execute in each of the pipeline stages. The
// two source operands are read during the decode stage.
InstrItinData< IIC_BRc,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<1,[MA]> // one cycle in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 1 // first operand read after one cycle
, 1 ]>, // second operand read after one cycle
// Branch and link instruction with one destination register and one source
// operand register. The instruction takes one cycle to execute in each of
// the pipeline stages. The source operand is read during the decode stage
// and the destination register is ready after the writeback stage.
InstrItinData< IIC_BRl,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<1,[MA]> // one cycle in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 4 // result ready after four cycles
, 1 ]>, // first operand read after one cycle
// Cache control instruction with two source operand registers. The
// instruction takes one cycle to execute in each of the pipeline stages
// except the memory access stage, which takes two cycles. The source
// operands are read during the decode stage.
InstrItinData< IIC_WDC,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<2,[MA]> // two cycles in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 1 // first operand read after one cycle
, 1 ]>, // second operand read after one cycle
// Floating point instruction with one destination register and two source
// operand registers. The instruction takes one cycle to execute in each of
// the pipeline stages except the memory access stage, which takes two
// cycles. The source operands are read during the decode stage and the
// results are ready after the writeback stage.
InstrItinData< IIC_FPU,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<2,[MA]> // two cycles in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 5 // result ready after five cycles
, 1 // first operand read after one cycle
, 1 ]>, // second operand read after one cycle
// Floating point divide instruction with one destination register and two
// source operand registers. The instruction takes one cycle to execute in
// each of the pipeline stages except the memory access stage, which takes 26
// cycles. The source operands are read during the decode stage and the
// results are ready after the writeback stage.
InstrItinData< IIC_FPUd,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<26,[MA]> // 26 cycles in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 29 // result ready after 29 cycles
, 1 // first operand read after one cycle
, 1 ]>, // second operand read after one cycle
// Convert floating point to integer instruction with one destination
// register and one source operand register. The instruction takes one cycle
// to execute in each of the pipeline stages except the memory access stage,
// which takes three cycles. The source operands are read during the decode
// stage and the results are ready after the writeback stage.
InstrItinData< IIC_FPUi,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<3,[MA]> // three cycles in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 6 // result ready after six cycles
, 1 ]>, // first operand read after one cycle
// Convert integer to floating point instruction with one destination
// register and one source operand register. The instruction takes one cycle
// to execute in each of the pipeline stages except the memory access stage,
// which takes two cycles. The source operands are read during the decode
// stage and the results are ready after the writeback stage.
InstrItinData< IIC_FPUf,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<2,[MA]> // two cycles in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 5 // result ready after five cycles
, 1 ]>, // first operand read after one cycle
// Floating point square root instruction with one destination register and
// one source operand register. The instruction takes one cycle to execute in
// each of the pipeline stages except the memory access stage, which takes 25
// cycles. The source operands are read during the decode stage and the
// results are ready after the writeback stage.
InstrItinData< IIC_FPUs,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<25,[MA]> // 25 cycles in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 28 // result ready after 28 cycles
, 1 ]>, // first operand read after one cycle
// Floating point comparison instruction with one destination register and
// two source operand registers. The instruction takes one cycle to execute
// in each of the pipeline stages. The source operands are read during the
// decode stage and the results are ready after the execute stage.
InstrItinData< IIC_FPUc,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<1,[MA]> // one cycle in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 2 // result ready after two cycles
, 1 // first operand read after one cycle
, 1 ]>, // second operand read after one cycle
// FSL get instruction with one register or immediate source operand and one
// destination register. The instruction takes one cycle to execute in each
// of the pipeline stages. The one source operand is read during the decode
// stage and the result is ready after the execute stage.
InstrItinData< IIC_FSLg,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<1,[MA]> // one cycle in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 2 // result ready after two cycles
, 1 ]>, // first operand read after one cycle
// FSL put instruction with either two register source operands or one
// register source operand and one immediate operand. There is no result
// produced by the instruction. The instruction takes one cycle to execute in
// each of the pipeline stages. The two source operands are read during the
// decode stage.
InstrItinData< IIC_FSLp,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<1,[MA]> // one cycle in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 1 // first operand read after one cycle
, 1 ]>, // second operand read after one cycle
// Memory store instruction with either three register source operands or two
// register source operands and one immediate operand. There is no result
// produced by the instruction. The instruction takes one cycle to execute in
// each of the pipeline stages. All of the source operands are read during
// the decode stage.
InstrItinData< IIC_MEMs,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<1,[MA]> // one cycle in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 1 // first operand read after one cycle
, 1 // second operand read after one cycle
, 1 ]>, // third operand read after one cycle
// Memory load instruction with one destination register and either two
// register source operands or one register source operand and one immediate
// operand. The instruction takes one cycle to execute in each of the
// pipeline stages. All of the source operands are read during the decode
// stage and the result is ready after the writeback stage.
InstrItinData< IIC_MEMl,
[ InstrStage<1,[IF]> // one cycle in fetch stage
, InstrStage<1,[ID]> // one cycle in decode stage
, InstrStage<1,[EX]> // one cycle in execute stage
, InstrStage<1,[MA]> // one cycle in memory access stage
, InstrStage<1,[WB]>], // one cycle in write back stage
[ 4 // result ready after four cycles
, 1 // second operand read after one cycle
, 1 ]> // third operand read after one cycle
]>;