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Redirect recovery cache that receives branch misprediction redirects and caches instructions to be dispatched in response to the redirects
Redirect recovery cache that receives branch misprediction redirects and caches instructions to be dispatched in response to the redirects
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机译:重定向恢复缓存,它接收分支预测错误的重定向,并缓存响应该重定向而要分派的指令
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摘要
In one embodiment, a processor comprises a branch resolution unit and a redirect recovery cache. The branch resolution unit is configured to detect a mispredicted branch operation, and to transmit a redirect address for fetching instructions from a correct target of the branch operation responsive to detecting the mispredicted branch operation. The redirect recovery cache comprises a plurality of cache entries, each cache entry configured to store operations corresponding to instructions fetched in response to respective mispredicted branch operations. The redirect recovery cache is coupled to receive the redirect address and, if the redirect address is a hit in the redirect recovery cache, the redirect recovery cache is configured to supply operations from the hit cache entry to a pipeline of the processor, bypassing at least one initial pipeline stage.
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