Invention Grant
US07882338B2 Method, system and computer program product for an implicit predicted return from a predicted subroutine 失效
用于预测子程序的隐式预测回报的方法,系统和计算机程序产品

Method, system and computer program product for an implicit predicted return from a predicted subroutine
Abstract:
A method, system and computer program product for performing an implicit predicted return from a predicted subroutine are provided. The system includes a branch history table/branch target buffer (BHT/BTB) to hold branch information, including a target address of a predicted subroutine and a branch type. The system also includes instruction buffers, and instruction fetch controls to perform a method including fetching a branch instruction at a branch address and a return-point instruction. The method also includes receiving the target address and the branch type, and fetching a fixed number of instructions in response to the branch type. The method further includes referencing the return-point instruction within the instruction buffers such that the return-point instruction is available upon completing the fetching of the fixed number of instructions absent a re-fetch of the return-point instruction.
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