Method and apparatus for executing load instructions speculative

Details Method and apparatus for executing load instructions speculative Method and apparatus for executing load instructions speculative

1997-07-09

1998-09-01

Treat, William M.

395393, 395394, 395580, 395581, G06F 9312

Patent

active

058023372

ABSTRACT:
A load is executed speculatively as a dismissible load instruction, which does not take exceptions, and a check instruction, which is in the same format as the dismissible load, that when executed determines whether an exception should be taken on the dismissible load. In this manner, a load may be executed speculatively while ensuring that an exception occurs at the same time it would have occurred had the load been executed non-speculatively.

REFERENCES:
patent: 5278985 (1994-01-01), Odnert et al.
patent: 5420991 (1995-05-01), Konigsfeld et al.
patent: 5421022 (1995-05-01), McKeen et al.
patent: 5526499 (1996-06-01), Bernstein et al.
patent: 5634023 (1997-05-01), Adler et al.

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