发明名称 |
Subroutine return prediction mechanism. |
摘要 |
<p>A method and arrangement for producing a predicted subroutine return address in response to entry of a subroutine return instruction in a computer pipeline that has a ring pointer counter and a ring buffer coupled to the ring pointer counter. The ring pointer counter contains a ring pointer that is changed when either a subroutine call instruction or return instruction enters the computer pipeline. The ring buffer has buffer locations which store a value present at its input into the buffer location pointed to by the ring pointer when a subroutine call instruction enters the pipeline. The ring buffer provides a value from the buffer location pointed to by the ring pointer when a subroutine return instruction enters the computer pipeline, this provided value being the predicted subroutine return address. <IMAGE></p> |
申请公布号 |
EP0433709(A2) |
申请公布日期 |
1991.06.26 |
申请号 |
EP19900122593 |
申请日期 |
1990.11.27 |
申请人 |
DIGITAL EQUIPMENT CORPORATION |
发明人 |
STEELY, SIMON C., JR.;SAGER, DAVID J. |
分类号 |
G06F9/32;G06F9/38;G06F9/42 |
主分类号 |
G06F9/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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