公开(公告)号：US11573801B1

公开(公告)日：2023-02-07

申请号：US17489301

申请日：2021-09-29

Applicant: Advanced Micro Devices, Inc.

Inventor： Eric Dixon ,  Erik Swanson ,  Theodore Carlson ,  Ruchir Dalal ,  Michael Estlick

IPC: G06F9/38 ,  G06F9/48 ,  G06F9/30

Abstract: A processor includes a register file and control logic that detects multiple different sets of sequential zero bits of a register in the register file, wherein each of the multiple different sets has a bit length that corresponds to a partial instruction width and operates at a first partial instruction width or a second partial instruction width with the register file depending on number of sets of zero bits detected in the register. In certain examples, the control logic causes operating at first instruction width that avoids merging of a first bit length of data in the register and operating at the second instruction width that avoids merging of a second bit length of data in the register. In some examples, a register rename map table incudes multiple zero bits that identify the detected multiple different sets of bits of sequential zeros.

公开(公告)号：US12223324B2

公开(公告)日：2025-02-11

申请号：US17957604

申请日：2022-09-30

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： Michael Estlick ,  Eric Dixon ,  Theodore Carlson ,  Erik D. Swanson

IPC: G06F9/38 ,  G06F9/30

Abstract: A data processing system includes a vector data processing unit that includes a shared scheduler queue configured to store in a same queue, at least one entry that includes at least a mask type instruction and another entry that includes at least a vector type instruction. Shared pipeline control logic controls a vector data path or a mask data path, based a type of instruction picked from the same queue. In some examples, at least one mask type instruction and the at least one vector type instruction each include a source operand having a corresponding shared source register bit field that indexes into both a mask register file and a vector register file. The shared pipeline control logic uses a mask register file or a vector register file depending on whether bits of the shared source register bit field identify a mask source register or a vector source register.