GB2433806B - Apparatus and method for removing unnecessary instruction - Google Patents

Apparatus and method for removing unnecessary instruction

Info

Publication number
GB2433806B
GB2433806B GB0700089A GB0700089A GB2433806B GB 2433806 B GB2433806 B GB 2433806B GB 0700089 A GB0700089 A GB 0700089A GB 0700089 A GB0700089 A GB 0700089A GB 2433806 B GB2433806 B GB 2433806B
Authority
GB
United Kingdom
Prior art keywords
removing unnecessary
unnecessary instruction
instruction
unnecessary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
GB0700089A
Other versions
GB0700089D0 (en
GB2433806A (en
Inventor
Yen-Ju Lu
Yu-Ming Chang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Realtek Semiconductor Corp
Original Assignee
Realtek Semiconductor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from TW95100241A external-priority patent/TWI309802B/en
Priority claimed from TW095108897A external-priority patent/TWI320636B/en
Application filed by Realtek Semiconductor Corp filed Critical Realtek Semiconductor Corp
Priority to GB0709530A priority Critical patent/GB2441606B/en
Publication of GB0700089D0 publication Critical patent/GB0700089D0/en
Publication of GB2433806A publication Critical patent/GB2433806A/en
Application granted granted Critical
Publication of GB2433806B publication Critical patent/GB2433806B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F9/30145—Instruction analysis, e.g. decoding, instruction word fields
    • G06F9/30149—Instruction analysis, e.g. decoding, instruction word fields of variable length instructions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F9/30145—Instruction analysis, e.g. decoding, instruction word fields
    • G06F9/30156—Special purpose encoding of instructions, e.g. Gray coding
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F9/3017—Runtime instruction translation, e.g. macros
    • G06F9/30178—Runtime instruction translation, e.g. macros of compressed or encrypted instructions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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, look ahead
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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, look ahead
    • G06F9/3802—Instruction prefetching
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
GB0700089A 2006-01-03 2007-01-03 Apparatus and method for removing unnecessary instruction Active GB2433806B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0709530A GB2441606B (en) 2006-01-03 2007-01-03 Method for using compressed data

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW95100241A TWI309802B (en) 2006-01-03 2006-01-03 Apparatus for removing unnecessary instruction and method thereof
TW095108897A TWI320636B (en) 2005-11-10 2006-03-16 Method for compressing instruction code

Publications (3)

Publication Number Publication Date
GB0700089D0 GB0700089D0 (en) 2007-02-07
GB2433806A GB2433806A (en) 2007-07-04
GB2433806B true GB2433806B (en) 2008-05-14

Family

ID=37759228

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0700089A Active GB2433806B (en) 2006-01-03 2007-01-03 Apparatus and method for removing unnecessary instruction

Country Status (2)

Country Link
DE (1) DE102007001042B4 (en)
GB (1) GB2433806B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5893143A (en) * 1995-06-28 1999-04-06 Hitachi, Ltd. Parallel processing unit with cache memories storing NO-OP mask bits for instructions
US6199126B1 (en) * 1997-09-23 2001-03-06 International Business Machines Corporation Processor transparent on-the-fly instruction stream decompression
US6442680B1 (en) * 1999-01-29 2002-08-27 International Business Machines Corporation Method and system for compressing reduced instruction set computer (RISC) executable code
US20030126591A1 (en) * 2001-12-21 2003-07-03 Youfeng Wu Stride-profile guided prefetching for irregular code

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6907516B2 (en) * 2002-05-30 2005-06-14 Microsoft Corporation Compression of program instructions using advanced sequential correlation
EP1387250B8 (en) * 2002-07-31 2012-02-29 Texas Instruments Inc. Processor that accomodates multiple instruction sets and multiple decode modes
US7203935B2 (en) * 2002-12-05 2007-04-10 Nec Corporation Hardware/software platform for rapid prototyping of code compression technologies

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5893143A (en) * 1995-06-28 1999-04-06 Hitachi, Ltd. Parallel processing unit with cache memories storing NO-OP mask bits for instructions
US6199126B1 (en) * 1997-09-23 2001-03-06 International Business Machines Corporation Processor transparent on-the-fly instruction stream decompression
US6442680B1 (en) * 1999-01-29 2002-08-27 International Business Machines Corporation Method and system for compressing reduced instruction set computer (RISC) executable code
US20030126591A1 (en) * 2001-12-21 2003-07-03 Youfeng Wu Stride-profile guided prefetching for irregular code

Also Published As

Publication number Publication date
DE102007001042A1 (en) 2007-08-09
DE102007001042B4 (en) 2017-08-24
GB0700089D0 (en) 2007-02-07
GB2433806A (en) 2007-07-04

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