LOAD QUEUE ENTRY REUSE FOR OPERAND STORE COMPARE HISTORY TABLE UPDATE

Patent №

US 9,652,248

Granted

2017-05-16

Filed 2016

Owner

INTERNATIONAL BUSINESS MACHINES CORPORATION

AI components

2

planning · hardware

Assignment

Recorded

Dataset

AIPD

2023_r1 edition

Application

15252325

Embodiments relate to load queue entry reuse for operand store compare (OSC) history table update. An aspect includes allocating a load queue entry in a load queue to a load instruction that is issued into an instruction pipeline, the load queue entry comprising a valid tag that is set and a keep tag that is unset. Another aspect includes based on the flushing of the load instruction, unsetting the valid tag and setting the keep tag. Another aspect includes reissuing the load instruction into the instruction pipeline. Another aspect includes based on determining that the allocated load queue entry corresponds to the reissued load instruction, setting the valid tag and leaving the keep tag set. Another aspect includes based on completing the reissued load instruction, and based on the valid tag and the keep tag being set, updating the OSC history table corresponding to the load instruction.

PlanningAI hardwareG06F 9/3871G06F 9/30043G06F 9/3824G06F 9/3834G06F 9/3838G06F 9/3861

AI classification

AI hardware0.98
Planning0.98
Natural language0.02
Knowledge representation0.00
Evolutionary computation0.00
Machine learning0.00
Speech0.00
Vision0.00

Ownership

INTERNATIONAL BUSINESS MACHINES CORPORATION

assignment · 395990839

Assignors

ALEXANDER, KHARY J., GRANOVSKY, ILYA

On an employer assignment, the assignors are typically the inventors.

From the same owner

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