Structure for supporting simultaneous storage of trace and standard cache lines
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United States of America Patent
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Feb 26, 2013
Grant Date -
Oct 9, 2008
app pub date -
May 7, 2008
filing date -
Oct 4, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A design structure embodied in a machine readable storage medium for designing, manufacturing, and/or testing a design for a single unified level one instruction cache in which some lines may contain traces and other lines in the same congruence class may contain blocks of instructions consistent with conventional cache lines is provided. A mechanism is described for indexing into the cache, and selecting the desired line. Control is exercised over which lines are contained within the cache. Provision is made for selection between a trace line and a conventional line when both match during a tag compare step.
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