Invention Grant
- Patent Title: Microprocessor for gating a load operation based on entries of a prediction table
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Application No.: US14063173Application Date: 2013-10-25
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Publication No.: US10198265B2Publication Date: 2019-02-05
- Inventor: Hui Zeng
- Applicant: Intel Corporation
- Applicant Address: US CA Santa Clara
- Assignee: INTEL CORPORATION
- Current Assignee: INTEL CORPORATION
- Current Assignee Address: US CA Santa Clara
- Agency: Nicholson De Vos Webster & Elliott, LLP
- Main IPC: G06F9/38
- IPC: G06F9/38 ; G06F9/30

Abstract:
A method for gating a load operation based on entries of a prediction table is presented. The method comprises performing a look-up for the load operation in a prediction table to find a matching entry, wherein the matching entry corresponds to a prediction regarding a behavior of the load operation, and wherein the matching entry comprises: (a) a tag field operable to identify the matching entry; (b) a distance field operable to indicate a distance of the load operation to a prior aliasing store instruction; and (c) a confidence field operable to indicate a prediction strength generated by the prediction table. The method further comprises determining if the matching entry provides a valid prediction and, if valid, retrieving a location for the prior aliasing store instruction using the distance field. The method finally comprises performing a gating operation on the load operation.
Public/Granted literature
- US20140281408A1 METHOD AND APPARATUS FOR PREDICTING FORWARDING OF DATA FROM A STORE TO A LOAD Public/Granted day:2014-09-18
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