题目
题目

CS-6290-O01 Branches: 2BP Quiz

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  Is there a sequence of branch outcomes that result in never predicting correctly? Type Yes/No [Fill in the blank], If Yes, then type the sequence 1.[Fill in the blank], 2.[Fill in the blank], 3.[Fill in the blank], 4.[Fill in the blank], 5.[Fill in the blank],

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思路分析
The question asks whether there exists a sequence of branch outcomes that results in never predicting correctly. Since this is a constructible adversarial scenario, we can reason about how a predictor would respond to successive outcomes and construct a sequence that defeats the predictor at every step. - Step analysis concept: If the predictor makes a guess at each step based on past history or a fixed rule, a deliberately chosen next outcome can be the opposite of what the predictor is expecting. By continuing this pattern, each new step can be set to violate the predictor’s next anticipated outcome, leading to a miss at every stage. This is the essence of a wor......Login to view full explanation

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