JP4727491B2 - 分岐予測コントロール - Google Patents

分岐予測コントロール Download PDF

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Publication number
JP4727491B2
JP4727491B2 JP2006114589A JP2006114589A JP4727491B2 JP 4727491 B2 JP4727491 B2 JP 4727491B2 JP 2006114589 A JP2006114589 A JP 2006114589A JP 2006114589 A JP2006114589 A JP 2006114589A JP 4727491 B2 JP4727491 B2 JP 4727491B2
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Japan
Prior art keywords
branch
instruction
type
branch instruction
predicted
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JP2006114589A
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Japanese (ja)
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JP2006338656A (ja
JP2006338656A5 (enExample
Inventor
デビッド・ジェームズ・ウィリアムソン
アンドリュー・ジェームズ・ブッカー
デビッド・ジョン・ブッチャー
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アーム・リミテッド
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Publication of JP2006338656A5 publication Critical patent/JP2006338656A5/ja
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    • 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
    • G06F9/3836—Instruction issuing, e.g. dynamic instruction scheduling or out of order instruction execution
    • G06F9/3842—Speculative instruction execution
    • G06F9/3844—Speculative instruction execution using dynamic branch prediction, e.g. using branch history tables
    • 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
    • G06F9/3836—Instruction issuing, e.g. dynamic instruction scheduling or out of order instruction execution
    • G06F9/3842—Speculative instruction execution
    • G06F9/3846—Speculative instruction execution using static prediction, e.g. branch taken strategy
    • 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
    • G06F9/3861—Recovery, e.g. branch miss-prediction, exception handling

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  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Advance Control (AREA)
JP2006114589A 2005-05-31 2006-04-18 分岐予測コントロール Active JP4727491B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/139,984 2005-05-31
US11/139,984 US7725695B2 (en) 2005-05-31 2005-05-31 Branch prediction apparatus for repurposing a branch to instruction set as a non-predicted branch

Publications (3)

Publication Number Publication Date
JP2006338656A JP2006338656A (ja) 2006-12-14
JP2006338656A5 JP2006338656A5 (enExample) 2010-05-13
JP4727491B2 true JP4727491B2 (ja) 2011-07-20

Family

ID=36425044

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006114589A Active JP4727491B2 (ja) 2005-05-31 2006-04-18 分岐予測コントロール

Country Status (4)

Country Link
US (1) US7725695B2 (enExample)
JP (1) JP4727491B2 (enExample)
CN (1) CN100530081C (enExample)
GB (1) GB2426842B (enExample)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8131984B2 (en) * 2009-02-12 2012-03-06 Via Technologies, Inc. Pipelined microprocessor with fast conditional branch instructions based on static serializing instruction state
US8521996B2 (en) * 2009-02-12 2013-08-27 Via Technologies, Inc. Pipelined microprocessor with fast non-selective correct conditional branch instruction resolution
US9891922B2 (en) 2012-06-15 2018-02-13 International Business Machines Corporation Selectively blocking branch prediction for a predetermined number of instructions
US20140115257A1 (en) * 2012-10-22 2014-04-24 Advanced Micro Devices, Inc. Prefetching using branch information from an instruction cache
GB2506462B (en) * 2013-03-13 2014-08-13 Imagination Tech Ltd Indirect branch prediction
US9639370B1 (en) * 2015-12-15 2017-05-02 International Business Machines Corporation Software instructed dynamic branch history pattern adjustment
US10423510B2 (en) * 2017-10-04 2019-09-24 Arm Limited Apparatus and method for predicting a redundancy period
US11822923B1 (en) * 2018-06-26 2023-11-21 Advanced Micro Devices, Inc. Performing store-to-load forwarding of a return address for a return instruction
US11513801B2 (en) * 2018-09-10 2022-11-29 Advanced Micro Devices, Inc. Controlling accesses to a branch prediction unit for sequences of fetch groups
US20210149676A1 (en) * 2019-11-14 2021-05-20 Higon Austin R&D Center Corporation Branch Prediction Method, Branch Prediction Unit and Processor Core
CN115577395B (zh) * 2022-10-27 2025-07-15 中国人民解放军国防科技大学 一种防范分支历史注入攻击的方法和装置
CN120447968B (zh) * 2025-07-08 2025-09-30 此芯科技集团有限公司 一种取指模块与处理器

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2603626B2 (ja) * 1987-01-16 1997-04-23 三菱電機株式会社 データ処理装置
US5228131A (en) * 1988-02-24 1993-07-13 Mitsubishi Denki Kabushiki Kaisha Data processor with selectively enabled and disabled branch prediction operation
US5333283A (en) * 1991-10-29 1994-07-26 International Business Machines Corporation Case block table for predicting the outcome of blocks of conditional branches having a common operand
US5608886A (en) * 1994-08-31 1997-03-04 Exponential Technology, Inc. Block-based branch prediction using a target finder array storing target sub-addresses
US5638525A (en) * 1995-02-10 1997-06-10 Intel Corporation Processor capable of executing programs that contain RISC and CISC instructions
JP3486690B2 (ja) * 1995-05-24 2004-01-13 株式会社ルネサステクノロジ パイプライン方式プロセッサ
US5721893A (en) * 1996-05-14 1998-02-24 Hewlett-Packard Company Exploiting untagged branch prediction cache by relocating branches
US6282663B1 (en) * 1997-01-22 2001-08-28 Intel Corporation Method and apparatus for performing power management by suppressing the speculative execution of instructions within a pipelined microprocessor
US6601161B2 (en) * 1998-12-30 2003-07-29 Intel Corporation Method and system for branch target prediction using path information
US6859875B1 (en) * 2000-06-12 2005-02-22 Freescale Semiconductor, Inc. Processor having selective branch prediction
US20020073301A1 (en) * 2000-12-07 2002-06-13 International Business Machines Corporation Hardware for use with compiler generated branch information
US6823447B2 (en) * 2001-03-01 2004-11-23 International Business Machines Corporation Software hint to improve the branch target prediction accuracy
JP3798998B2 (ja) * 2002-06-28 2006-07-19 富士通株式会社 分岐予測装置および分岐予測方法
US7000095B2 (en) 2002-09-06 2006-02-14 Mips Technologies, Inc. Method and apparatus for clearing hazards using jump instructions
US7595752B2 (en) * 2002-10-02 2009-09-29 Global Locate, Inc. Method and apparatus for enhanced autonomous GPS
JP2005078234A (ja) * 2003-08-29 2005-03-24 Renesas Technology Corp 情報処理装置
US20050216713A1 (en) * 2004-03-25 2005-09-29 International Business Machines Corporation Instruction text controlled selectively stated branches for prediction via a branch target buffer

Also Published As

Publication number Publication date
US20060271770A1 (en) 2006-11-30
GB2426842B (en) 2009-07-29
US7725695B2 (en) 2010-05-25
JP2006338656A (ja) 2006-12-14
GB0606560D0 (en) 2006-05-10
CN100530081C (zh) 2009-08-19
GB2426842A (en) 2006-12-06
CN1873611A (zh) 2006-12-06

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