Invention Grant
- Patent Title: Managing trace information storage using pipeline instruction insertion and filtering
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Application No.: US16234813Application Date: 2018-12-28
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Publication No.: US10747543B2Publication Date: 2020-08-18
- Inventor: Gerald Lampert , Nitin Prakash , Shubhendu Sekhar Mukherjee , David Albert Carlson
- Applicant: Marvell International Ltd.
- Applicant Address: SG Singapore
- Assignee: Marvell Asia Pte, Ltd.
- Current Assignee: Marvell Asia Pte, Ltd.
- Current Assignee Address: SG Singapore
- Agency: Young Basile Hanlon & MacFarlane, P.C.
- Main IPC: G06F9/30
- IPC: G06F9/30 ; G06F9/38

Abstract:
At least some instructions executed in a pipeline are each associated with corresponding trace information that characterizes execution of that instruction in the pipeline. A predetermined type of store instructions flow through a subset of contiguous stages of the pipeline. A signal is received to store a portion of the trace information. A stage before the subset of contiguous stages is stalled. A store instruction of the predetermined type is inserted into a stage at the beginning of the subset of contiguous stages to enable the store instruction to reach the memory access stage at which an operand of the store instruction including the portion of the trace information is sent out of the pipeline. The store instruction is filtered from a stage of the subset of contiguous stages that occurs earlier in the pipeline than a stage in which trace information is generated.
Public/Granted literature
- US20200210195A1 Managing Trace Information Storage Using Pipeline Instruction Insertion and Filtering Public/Granted day:2020-07-02
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