公开(公告)号：US20240330558A1

公开(公告)日：2024-10-03

申请号：US18193197

申请日：2023-03-30

Applicant: Xilinx, Inc.

Inventor： Jichun Wang ,  Wuxi Li ,  Chun Zhang ,  Paul Kundarewich ,  John Blaine

IPC: G06F30/392

CPC classification number: G06F30/392

Abstract: Implementing circuit designs in integrated circuit devices includes determining, using computer hardware, regular control sets, super control sets, and mega control sets for a circuit design. Control set optimization is performed on the circuit design. Performing control set optimization includes performing a clock-enable-only control set reduction for each super control set. Performing control set optimization includes performing a set/reset control set reduction and a clock-enable control set reduction for each mega control set. The circuit design is selectively modified by committing changes determined from the control set reductions to the circuit design on a per control set basis based on an improvement of a cost metric for each control set.

公开(公告)号：US10943043B1

公开(公告)日：2021-03-09

申请号：US16831229

申请日：2020-03-26

Applicant: XILINX, INC.

Inventor： Jichun Wang ,  Chun Zhang ,  Fan Zhang ,  Bing Tian

IPC: G06F30/30 ,  G06F30/34 ,  G06F30/327 ,  G06F30/337 ,  G06F30/343 ,  G06F30/323

Abstract: Examples described herein provide a method for optimizing a netlist for an integrated circuit device. The method generally includes receiving a netlist comprising a first lookup table, and upstream logic, wherein the upstream logic receives a plurality of input signals and comprises at least one output connected as at least one input to the first lookup table, wherein the first lookup table comprises an unused input and multiple outputs; mapping the plurality of input signals directly to the at least one input and the unused input of the first lookup table; validating the mapping by monitoring the multiple outputs of the first lookup table; and upon a successful validation, optimizing the netlist by removing the upstream logic and reconnecting the plurality of input signals to the at least one input and the unused input of the first lookup table.