{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8504805","patent":{"patent_number":"US-8504805","title":"Processor operating mode for mitigating dependency conditions between instructions having different operand sizes","assignee":null,"inventors":[],"filing_date":"2009-04-22T00:00:00.000Z","publication_date":"2013-08-06T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F"],"num_claims":16,"abstract":"Various techniques for mitigating dependencies between groups of instructions are disclosed. In one embodiment, such dependencies include “evil twin” conditions, in which a first floating-point instruction has as a destination a first portion of a logical floating-point register (e.g., a single-precision write), and in which a second, subsequent floating-point instruction has as a source the first portion and a second portion of the same logical floating-point register (e.g., a double-precision read). The disclosed techniques may be applicable in a multithreaded processor implementing register renaming. In one embodiment, a processor may enter an operating mode in which detection of evil twin “producers” (e.g., single-precision writes) causes the instruction sequence to be modified to break potential dependencies. Modification of the instruction sequence may continue until one or more exit criteria are reached (e.g., committing a predetermined number of single-precision writes). This operating mode may be employed on a per-thread basis."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Processor operating mode for mitigating dependency conditions between instructions having different operand sizes","description":"Various techniques for mitigating dependencies between groups of instructions are disclosed. In one embodiment, such dependencies include “evil twin” conditions, in which a first floating-point instru","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8504805","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8504805","citation_suggestion":"Patentable. \"Processor operating mode for mitigating dependency conditions between instructions having different operand sizes\" (US-8504805). https://patentable.app/patents/US-8504805","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8504805","json":"https://patentable.app/api/llm-context/US-8504805","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T00:36:22.612Z"}