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The results of speculative instruction execution is stored in

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in Microprocessor by (39.4k points)
The results of speculative instruction execution is stored in

(a) visible CPU registers

(b) permanent memory

(c) temporary memory

(d) none

The question was posed to me in an international level competition.

Enquiry is from Pentium in division Recent Advancements in Microprocessor Architecture of Microprocessor

1 Answer

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by (49.2k points)
Right choice is (c) temporary memory

To explain I would say: The results of speculative instruction execution should not be stored in CPU registers and are temporarily stored, since they may have to be discarded, in case if there is a branch instruction before these speculative instruction executions.

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