Invention Grant
US07865705B2 Branch target address cache including address type tag bit 有权
分支目标地址缓存包括地址类型标签位

Branch target address cache including address type tag bit
Abstract:
In at least one embodiment, a processor includes an execution unit and instruction sequencing logic that fetches instructions from a memory system for execution by the execution unit. The instruction sequencing logic includes branch logic that outputs predicted branch target addresses for use as instruction fetch addresses. The branch logic includes a branch target address prediction circuitry concurrently holding a first entry providing storage for a first branch target address prediction associating a first instruction fetch address with a first branch target address to be used as an instruction fetch address and a second entry providing storage for a second branch target address prediction associating the first instruction fetch address with a different second branch target address. The first entry indicates a first instruction address type for the first instruction fetch address, and the second entry indicates a second instruction address type for the first instruction fetch address.
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