公开(公告)号：US20220129267A1

公开(公告)日：2022-04-28

申请号：US17518291

申请日：2021-11-03

Applicant: INTEL CORPORATION

Inventor： Venkateswara MADDURI ,  ElMoustapha OULD-AHMED-VALL ,  Robert VALENTINE ,  Mark CHARNEY

IPC: G06F9/30

Abstract: An apparatus and method for performing right-shifting operations on packed quadword data. For example, one processor embodiment comprises a decoder to decode a right-shift instruction, a first source register to store a plurality of packed quadword data elements, and execution circuitry to execute the decoded right-shift instruction. The execution circuitry comprises shift circuitry with sign preservation logic to right-shift first and second packed quadword data elements in the first source register by an amount specified in an immediate value or in a control value in a second source register, the right-shifting to generate first and second right-shifted quadwords, the sign preservation logic to shift in the sign bit. The execution circuitry is to cause selection of 32 most significant bits of the first and second right-shifted quadwords to be written to 32 least significant bit positions of first and second quadword data element locations of a destination register.

公开(公告)号：US20190102192A1

公开(公告)日：2019-04-04

申请号：US15721444

申请日：2017-09-29

Applicant: Intel Corporation

Inventor： Venkateswara MADDURI ,  Elmoustapha OULD-AHMED-VALL ,  Robert VALENTINE ,  Mark CHARNEY

IPC: G06F9/30

Abstract: An apparatus and method for performing right-shifting operations on packed quadword data. For example, one embodiment of a processor comprises: a decoder to decode a right-shift instruction to generate a decoded right-shift instruction; a first source register to store a plurality of packed quadwords data elements; execution circuitry to execute the decoded right-shift instruction, the execution circuitry comprising shift circuitry to right-shift at least first and second packed quadword data elements from first and second packed quadword data element locations, respectively, in the first source register by an amount specified in an immediate value or in a control value in a second source register, to generate first and second right-shifted quadwords; the execution circuitry to cause selection of a specified set of most significant bits of the first and second right-shifted quadwords to be written to least significant bit regions of first and second quadword data element locations, respectively, of a destination register; and the destination register to store the specified set of the most significant bits of the first and second right-shifted quadwords.