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Method for handling condition code modifiers in an out-of-order multi-issue multi-stranded processor
Method for handling condition code modifiers in an out-of-order multi-issue multi-stranded processor
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机译:在无序多问题多链处理器中处理条件代码修饰符的方法
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摘要
A technique for handling a condition code modifying instruction in an out-of-order multi-stranded processor involves providing a condition code architectural register file for each strand, providing a condition code working register file, and assigning condition code architectural register file identification information (CARF_ID) and condition code working register file identification information (CWRF_ID) to the condition code modifying instruction. CARF_ID is used to index a location in a condition code rename table to which the CWRF_ID is stored. Thereafter, upon an exception-free execution of the condition code modifying instruction, a result of the execution is copied from the condition code working register file to the condition code architectural register file dependent on CARF_ID, CWRF_ID, register type information, and strand identification information.
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