公开(公告)号：JPH09171463A

公开(公告)日：1997-06-30

申请号：JP28379296

申请日：1996-10-25

Applicant: ADVANCED MICRO DEVICES INC

Inventor： BURAIAN DABURIYU KEESU ,  ROTSUDO JII FURETSUKU ,  OURII MOURAA ,  JIYAN GAN KON

IPC: G06F9/32 ,  G06F9/38 ,  G06F9/48 ,  G06F9/46

Abstract: PROBLEM TO BE SOLVED: To enable a completely exact branching prediction without dividing the pipeline of an instruction and without requesting a complicated circuit, by fetching a saved instruction for the pipeline. SOLUTION: A multiplexor(MUX) 26 receives the control signal based on a branching condition, imparts either one of the branching target address imparted on a data route 24 and the continuous address imparted on a data route 20 to an instruction cache 30 and determines whether the next instruction to be executed by a processor 10 is fetched or not. When the instruction requesting a branching is processed by the processor 10 so as not to generate the branching till the instruction succeeding the branching instruction is executed. The instruction pipeline realized by a PC stack pipeline 32 in this way operates without an interruption even when the branching instruction enters the pipeline. Therefore, the branching is made to be generated within the single cycle of the assigned pipeline.

公开(公告)号：JPS6254342A

公开(公告)日：1987-03-10

申请号：JP20356986

申请日：1986-08-28

Applicant: ADVANCED MICRO DEVICES INC

Inventor： BURAIAN DABURIYU KEESU ,  ROTSUDO JII FURETSUKU ,  OURII MOURAA ,  JIYAN GAN KON

IPC: G06F9/32 ,  G06F9/38 ,  G06F9/48