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Facilitating Fast Scanning for Control Transfer Instructions in an Instruction Fetch Unit Background
| Content Provider | Semantic Scholar |
|---|---|
| Copyright Year | 2017 |
| Abstract | One embodiment of the present invention provides a system that performs a fast-scanning operation to generate fetch bundles within an instruction fetch unit (IFU) of a processor. During operation, the system obtains a cache line containing instructions at the IFU. Next, the system performs a com plete-scanning operation on the cache line to identify control transfer instructions (CTIs) in the cache line. At the same time, the system performs a fast-scanning operation to identify CTIs in a group of initial instructions in the cache line, wherein the initial instructions are executed before other instructions in the cache line. Next, the system obtains results from the fast-scanning operation before results of the complete-Scanning operation are available. The system then uses results from the fast-scanning operation to form an initial fetch bundle containing initial instructions, and sends the initial fetch bundle to the instruction-issue unit. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://patentimages.storage.googleapis.com/e2/af/be/512f8b0fe6709d/US20070294513A1.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
