CA1272296C - - Google Patents

Info

Publication number
CA1272296C
CA1272296C CA 511954 CA511954A CA1272296C CA 1272296 C CA1272296 C CA 1272296C CA 511954 CA511954 CA 511954 CA 511954 A CA511954 A CA 511954A CA 1272296 C CA1272296 C CA 1272296C
Authority
CA
Canada
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.)
Expired - Lifetime
Application number
CA 511954
Other versions
CA1270573A1 (en
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
Application filed filed Critical
Priority to CA000593003A priority Critical patent/CA1272296A/en
Publication of CA1270573A1 publication Critical patent/CA1270573A1/en
Application granted granted Critical
Publication of CA1272296C publication Critical patent/CA1272296C/xx
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G06F9/30069—Instruction skipping instructions, e.g. SKIP
    • 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
    • G06F9/30058—Conditional branch instructions
    • 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
    • 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
    • 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
    • G06F9/3854—Instruction completion, e.g. retiring, committing or graduating
    • G06F9/3858—Result writeback, i.e. updating the architectural state or memory
    • G06F9/38585—Result writeback, i.e. updating the architectural state or memory with result invalidation, e.g. nullification

Landscapes

  • 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)
  • Devices For Executing Special Programs (AREA)
CA 511954 1985-06-28 1986-06-19 Bidirectional branch prediction and optimization Granted CA1270573A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000593003A CA1272296A (en) 1985-06-28 1989-03-07 Bidirectional branch prediction and optimization

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US750,625 1985-06-28
US06/750,625 US4755966A (en) 1985-06-28 1985-06-28 Bidirectional branch prediction and optimization

Publications (2)

Publication Number Publication Date
CA1270573A1 CA1270573A1 (en) 1990-06-19
CA1272296C true CA1272296C (en]) 1990-07-31

Family

ID=25018608

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 511954 Granted CA1270573A1 (en) 1985-06-28 1986-06-19 Bidirectional branch prediction and optimization

Country Status (8)

Country Link
US (2) US4755966A (en])
EP (2) EP0423906B1 (en])
JP (1) JP2518616B2 (en])
KR (1) KR940005817B1 (en])
CN (1) CN1010618B (en])
AU (2) AU589977B2 (en])
CA (1) CA1270573A1 (en])
DE (2) DE3650413T2 (en])

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US5539888A (en) * 1993-12-23 1996-07-23 Unisys Corporation System and method for processing external conditional branch instructions
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US5905881A (en) * 1995-11-30 1999-05-18 Unisys Corporation Delayed state writes for an instruction processor
US5774709A (en) * 1995-12-06 1998-06-30 Lsi Logic Corporation Enhanced branch delay slot handling with single exception program counter
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Also Published As

Publication number Publication date
AU589977B2 (en) 1989-10-26
KR940005817B1 (ko) 1994-06-23
US5051896A (en) 1991-09-24
AU5917186A (en) 1987-01-08
EP0207665B1 (en) 1991-08-07
DE3650413D1 (de) 1995-11-09
EP0423906B1 (en) 1995-10-04
CN1010618B (zh) 1990-11-28
JPS623340A (ja) 1987-01-09
DE3680722D1 (de) 1991-09-12
EP0423906A3 (en) 1991-08-28
CA1270573A1 (en) 1990-06-19
EP0423906A2 (en) 1991-04-24
EP0207665A1 (en) 1987-01-07
DE3650413T2 (de) 1996-03-07
JP2518616B2 (ja) 1996-07-24
AU4867090A (en) 1990-05-10
CN86103708A (zh) 1986-12-24
AU627828B2 (en) 1992-09-03
US4755966A (en) 1988-07-05
KR870000643A (ko) 1987-02-19

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Legal Events

Date Code Title Description
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121205