CN105074655B - 用于取消对循环的数据预取请求的方法和设备及介质 - Google Patents

用于取消对循环的数据预取请求的方法和设备及介质 Download PDF

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Publication number
CN105074655B
CN105074655B CN201480005173.0A CN201480005173A CN105074655B CN 105074655 B CN105074655 B CN 105074655B CN 201480005173 A CN201480005173 A CN 201480005173A CN 105074655 B CN105074655 B CN 105074655B
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loop
prefetch
exit
data
instruction
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CN201480005173.0A
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Chinese (zh)
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CN105074655A (zh
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马修·M·吉尔伯
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Qualcomm Inc
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Qualcomm Inc
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
    • G06F12/0862—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches with prefetch
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/3005—Arrangements for executing specific machine instructions to perform operations for flow control
    • G06F9/30065—Loop control instructions; iterative instructions, e.g. LOOP, REPEAT
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/32—Address formation of the next instruction, e.g. by incrementing the instruction counter
    • G06F9/322—Address formation of the next instruction, e.g. by incrementing the instruction counter for non-sequential address
    • G06F9/325—Address formation of the next instruction, e.g. by incrementing the instruction counter for non-sequential address for loops, e.g. loop detection or loop counter
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/34—Addressing or accessing the instruction operand or the result ; Formation of operand address; Addressing modes
    • G06F9/345—Addressing or accessing the instruction operand or the result ; Formation of operand address; Addressing modes of multiple operands or results
    • G06F9/3455—Addressing or accessing the instruction operand or the result ; Formation of operand address; Addressing modes of multiple operands or results using stride
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/38—Concurrent instruction execution, e.g. pipeline or look ahead
    • G06F9/3824—Operand accessing
    • G06F9/383—Operand prefetching
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/38—Concurrent instruction execution, e.g. pipeline or look ahead
    • G06F9/3824—Operand accessing
    • G06F9/383—Operand prefetching
    • G06F9/3832—Value prediction for operands; operand history buffers

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Memory System Of A Hierarchy Structure (AREA)
  • Advance Control (AREA)
  • Executing Machine-Instructions (AREA)
CN201480005173.0A 2013-01-21 2014-01-18 用于取消对循环的数据预取请求的方法和设备及介质 Active CN105074655B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US13/746,000 2013-01-21
US13/746,000 US9519586B2 (en) 2013-01-21 2013-01-21 Methods and apparatus to reduce cache pollution caused by data prefetching
PCT/US2014/012152 WO2014113741A1 (en) 2013-01-21 2014-01-18 Methods and apparatus for cancelling data prefetch requests for a loop

Publications (2)

Publication Number Publication Date
CN105074655A CN105074655A (zh) 2015-11-18
CN105074655B true CN105074655B (zh) 2018-04-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201480005173.0A Active CN105074655B (zh) 2013-01-21 2014-01-18 用于取消对循环的数据预取请求的方法和设备及介质

Country Status (10)

Country Link
US (1) US9519586B2 (enExample)
EP (1) EP2946286B1 (enExample)
JP (1) JP6143886B2 (enExample)
KR (1) KR101788683B1 (enExample)
CN (1) CN105074655B (enExample)
BR (1) BR112015017103B1 (enExample)
ES (1) ES2655852T3 (enExample)
HU (1) HUE035210T2 (enExample)
TW (1) TWI521347B (enExample)
WO (1) WO2014113741A1 (enExample)

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US9348754B2 (en) 2012-10-11 2016-05-24 Soft Machines Inc. Systems and methods for implementing weak stream software data and instruction prefetching using a hardware data prefetcher
US10963254B2 (en) * 2013-07-15 2021-03-30 Texas Instruments Incorporated Mechanism to queue multiple streams to run on streaming engine
CN104133691B (zh) * 2014-05-05 2016-08-31 腾讯科技（深圳）有限公司 加速启动的方法及装置
US20160283243A1 (en) * 2015-03-28 2016-09-29 Yong-Kyu Jung Branch look-ahead instruction disassembling, assembling, and delivering system apparatus and method for microprocessor system
EP3320428A4 (en) * 2015-07-09 2019-07-17 Centipede Semi Ltd. PROCESSOR WITH EFFICIENT MEMORY ACCESS
US10275249B1 (en) * 2015-10-15 2019-04-30 Marvell International Ltd. Method and apparatus for predicting end of loop
US10528352B2 (en) 2016-03-08 2020-01-07 International Business Machines Corporation Blocking instruction fetching in a computer processor
US10175987B2 (en) 2016-03-17 2019-01-08 International Business Machines Corporation Instruction prefetching in a computer processor using a prefetch prediction vector
US10474578B2 (en) * 2017-08-30 2019-11-12 Oracle International Corporation Utilization-based throttling of hardware prefetchers
GB2572954B (en) * 2018-04-16 2020-12-30 Advanced Risc Mach Ltd An apparatus and method for prefetching data items
US10649777B2 (en) * 2018-05-14 2020-05-12 International Business Machines Corporation Hardware-based data prefetching based on loop-unrolled instructions
GB2574270B (en) * 2018-06-01 2020-09-09 Advanced Risc Mach Ltd Speculation-restricted memory region type
US11216279B2 (en) * 2018-11-26 2022-01-04 Advanced Micro Devices, Inc. Loop exit predictor
US10884749B2 (en) 2019-03-26 2021-01-05 International Business Machines Corporation Control of speculative demand loads
US10963388B2 (en) * 2019-06-24 2021-03-30 Samsung Electronics Co., Ltd. Prefetching in a lower level exclusive cache hierarchy
FR3098622A1 (fr) * 2019-07-12 2021-01-15 Stmicroelectronics (Grenoble 2) Sas Procede de gestion d’instructions d’un programme contenues dans une memoire programme et circuit integre correspondant
CN110442382B (zh) * 2019-07-31 2021-06-15 西安芯海微电子科技有限公司 预取缓存控制方法、装置、芯片以及计算机可读存储介质
US11150812B2 (en) * 2019-08-20 2021-10-19 Micron Technology, Inc. Predictive memory management
CN111541722B (zh) * 2020-05-22 2022-03-18 哈尔滨工程大学 基于密度聚类的信息中心网络缓存污染攻击检测防御方法
US11567776B2 (en) * 2020-11-03 2023-01-31 Centaur Technology, Inc. Branch density detection for prefetcher
US11630654B2 (en) * 2021-08-19 2023-04-18 International Business Machines Corporation Analysis for modeling data cache utilization
US20250130947A1 (en) * 2023-10-20 2025-04-24 International Business Machines Corporation Clear prefetch stream on detection of pipeline flush
US12493556B2 (en) 2024-04-26 2025-12-09 Google Llc Hardware control system to modulate prefetchers based on runtime telemetry

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US20020095566A1 (en) * 1998-10-12 2002-07-18 Harshvardhan Sharangpani Method for processing branch operations
US6446143B1 (en) * 1998-11-25 2002-09-03 Compaq Information Technologies Group, L.P. Methods and apparatus for minimizing the impact of excessive instruction retrieval
US6775765B1 (en) * 2000-02-07 2004-08-10 Freescale Semiconductor, Inc. Data processing system having instruction folding and method thereof
US6799263B1 (en) * 1999-10-28 2004-09-28 Hewlett-Packard Development Company, L.P. Prefetch instruction for an unpredicted path including a flush field for indicating whether earlier prefetches are to be discarded and whether in-progress prefetches are to be aborted
US20080229070A1 (en) * 2007-03-12 2008-09-18 Arm Limited Cache circuitry, data processing apparatus and method for prefetching data
US20080244232A1 (en) * 2007-04-02 2008-10-02 Marina Sherman Pre-fetch apparatus

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US5996061A (en) * 1997-06-25 1999-11-30 Sun Microsystems, Inc. Method for invalidating data identified by software compiler
US6260116B1 (en) * 1998-07-01 2001-07-10 International Business Machines Corporation System and method for prefetching data
US20020095566A1 (en) * 1998-10-12 2002-07-18 Harshvardhan Sharangpani Method for processing branch operations
US6446143B1 (en) * 1998-11-25 2002-09-03 Compaq Information Technologies Group, L.P. Methods and apparatus for minimizing the impact of excessive instruction retrieval
US6799263B1 (en) * 1999-10-28 2004-09-28 Hewlett-Packard Development Company, L.P. Prefetch instruction for an unpredicted path including a flush field for indicating whether earlier prefetches are to be discarded and whether in-progress prefetches are to be aborted
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Also Published As

Publication number Publication date
KR20150110588A (ko) 2015-10-02
JP6143886B2 (ja) 2017-06-07
WO2014113741A1 (en) 2014-07-24
US20140208039A1 (en) 2014-07-24
TWI521347B (zh) 2016-02-11
BR112015017103A2 (pt) 2017-07-11
EP2946286A1 (en) 2015-11-25
EP2946286B1 (en) 2017-10-25
CN105074655A (zh) 2015-11-18
HUE035210T2 (hu) 2018-05-02
JP2016507836A (ja) 2016-03-10
KR101788683B1 (ko) 2017-10-20
BR112015017103B1 (pt) 2022-01-11
TW201443645A (zh) 2014-11-16
US9519586B2 (en) 2016-12-13
ES2655852T3 (es) 2018-02-21

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