Stunt box to broadcast and store results until retirement for an out-of-order processor
First Claim
1. A stunt box for selectively retiring a result from among a plurality of first results, the stunt box comprising:
- a first storage configured to store a plurality of execution pipe results as the plurality of first results;
a stunt box mux configured to selectively provide a plurality of second results from among the plurality of first results, the plurality of second results not including the result from among the plurality of first results;
a second storage configured to store the plurality of second results; and
an arbiter configured to;
receive the plurality of execution pipe results, the plurality of first results, and the plurality of second results,select the result from the plurality of first results to retire, andprovide a select line to the stunt box mux to configure the stunt box mux to not provide the result within the plurality of second results,wherein the arbiter is further configured to broadcast the plurality of execution pipe results, the plurality of first results, and the plurality of second results prior to retiring the result.
6 Assignments
0 Petitions
Accused Products
Abstract
A processor including a stunt box with an intermediate storage, including a plurality of registers, configured to store a plurality of execution pipe results as a plurality of intermediate results; a storage, communicatively coupled to the intermediate storage, configured to store a plurality of storage results which may include one or more of the plurality of intermediate results; and an arbiter, communicatively coupled to the intermediate storage and the storage, configured to receive the plurality of execution pipe results, the plurality of intermediate results, and the plurality of storage results and to select an output to retire from of the plurality of results, the plurality of intermediate results, and the plurality of storage results.
12 Citations
16 Claims
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1. A stunt box for selectively retiring a result from among a plurality of first results, the stunt box comprising:
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a first storage configured to store a plurality of execution pipe results as the plurality of first results; a stunt box mux configured to selectively provide a plurality of second results from among the plurality of first results, the plurality of second results not including the result from among the plurality of first results; a second storage configured to store the plurality of second results; and an arbiter configured to; receive the plurality of execution pipe results, the plurality of first results, and the plurality of second results, select the result from the plurality of first results to retire, and provide a select line to the stunt box mux to configure the stunt box mux to not provide the result within the plurality of second results, wherein the arbiter is further configured to broadcast the plurality of execution pipe results, the plurality of first results, and the plurality of second results prior to retiring the result. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for selectively retiring a first result from among a plurality of first results, the method comprising:
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receiving, by an arbiter, a second result from among a plurality of second results from a first storage, the plurality of second results not including the first result from among the plurality of first results; receiving, by the arbiter, a third result from among the plurality of first results from a second storage; receiving, by the arbiter, a fourth result from among a plurality of execution pipe results from an execution pipeline; selecting, by the arbiter, the first result from among the second result, the third result, and the fourth result to retire; providing, by the arbiter, a select line to retire the first result from among the plurality of first results; and broadcasting, by the arbiter, the second result, the third result, and the fourth result prior to retiring the second result, the third result, and the fourth result. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A stunt box for selectively retiring a result from among a plurality of first results, the stunt box comprising:
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a first storage configured to store a plurality of execution pipe results as the plurality of first results; a second storage configured to store a plurality of second results; a stunt box mux configured to selectively provide the plurality of second results from among the plurality of first results, the plurality of second results not including the result from among the plurality of first results; a third storage configured to store the result as a speculative result in response to the result being speculative; an arbiter configured to; select the result from the plurality of first results to retire, provide a select line to the stunt box mux to configure the stunt box mux to not provide the result within the plurality of second results, and provide the result as the speculative result to the third storage in response to the result being speculative; and a second arbiter configured to; receive the speculative result from the third storage, and provide the speculative result to the arbiter for retirement in response to confirming a speculative instruction associated with the speculative result, wherein the arbiter is further configured to inform the third storage to delete the speculative result in response to the second arbiter confirming the speculative instruction. - View Dependent Claims (14, 15, 16)
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Specification