US 12,614,010 B1Granted

Purpose-directed candidate filtering for critical region resynthesis

AssigneeCadence Design Systems, Inc.

InventorsZi Wang, Kwangsoo Han, Jordan Moxon

Life of this patent

Estimating the term…

Loading patent…

Abstract

Aspects of the present disclosure address systems and methods for performing critical region resynthesis with purpose-directed candidate filtering. Data representing an integrated circuit design is accessed along with a threshold constraint defining a power consumption threshold. A first cell is selected from the integrated circuit design. A swapping candidate to evaluate for swapping with the first cell is selected. The swapping candidate comprises at least a second cell. The swapping candidate is evaluated based on a power consumption associated with the swapping candidate and the power consumption threshold. The first cell is swapped with the swapping candidate in the integrated circuit design based on a result of the evaluating. The data representing the integrated circuit design is updated based on the swapping of the first cell with the swapping candidate.

Claims20

Dependent claims

A system comprising:

one or more processors of a machine;
and
a computer storage medium storing instructions, which when executed by the machine, cause the machine to perform operations comprising:
accessing, from memory, data representing an integrated circuit design;
accessing a threshold constraint defining a power consumption threshold;
selecting a first cell from the integrated circuit design;
selecting, from a cell library, a swapping candidate to evaluate for swapping with the first cell, the swapping candidate comprising at least a second cell;
evaluating whether to swap the first cell with the swapping candidate based on a comparison of a power consumption associated with the swapping candidate and the power consumption threshold, the evaluating comprising:
determining the power consumption associated with the swapping candidate exceeds the power consumption threshold;
based on determining the power consumption associated with the swapping candidate exceeds the power consumption threshold, calculating a difference between the power consumption associated with the swapping candidate and the power consumption threshold;
and
opting to swap the first cell with the swapping candidate based on the difference;
and
swapping the first cell with the swapping candidate in the integrated circuit design based on the evaluating;
and
updating the data representing the integrated circuit design based on the swapping of the first cell with the swapping candidate.

13 more elements

A method comprising:

accessing, from memory, data representing an integrated circuit design;
accessing a threshold constraint defining a power consumption threshold;
selecting a first cell from the integrated circuit design;
selecting, from a cell library, a swapping candidate to evaluate for swapping with the first cell, the swapping candidate comprising at least a second cell;
evaluating whether to swap the first cell with the swapping candidate based on a comparison of a power consumption associated with the swapping candidate and the power consumption threshold, the evaluating comprising:
determining the power consumption associated with the swapping candidate exceeds the power consumption threshold;
based on determining the power consumption associated with the swapping candidate exceeds the power consumption threshold, calculating a difference between the power consumption associated with the swa in candidate and the power consumption threshold, and
opting to swap the first cell with the swapping candidate based on the difference;
swapping the first cell with the swapping candidate in the integrated circuit design based on the evaluating;
and
updating the data representing the integrated circuit design based on the swapping of the first cell with the swapping candidate.

8 more elements

A computer storage medium storing instructions, which when executed by a machine, cause the machine to perform operations comprising:

accessing, from memory, data representing an integrated circuit design;
accessing a threshold constraint defining a power consumption threshold;
selecting a first cell from the integrated circuit design;
selecting, from a cell library, a swapping candidate to evaluate for swapping with the first cell, the swapping candidate comprising at least a second cell;
evaluating whether to swap the first cell with the swapping candidate based on a comparison of a power consumption associated with the swapping candidate and the power consumption threshold, the evaluating comprising:
determining the power consumption associated with the swapping candidate exceeds the power consumption threshold;
based on determining the power consumption associated with the swapping candidate exceeds the power consumption threshold, calculating a difference between the power consumption associated with the swapping candidate and the power consumption threshold;
and
opting to swap the first cell with the swapping candidate based on the difference;
swapping the first cell with the swapping candidate in the integrated circuit design based on the evaluating;
and
updating the data representing the integrated circuit design based on the swapping of the first cell with the swapping candidate.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/106,356Filed 6 Feb 2023
Granted: 28 Apr 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G06F 30/3308
Design verification, e.g. functional simulation or model checking: using simulation
G06F 30/327
Circuit design at the digital level: logic synthesis; Behaviour synthesis, e.g. mapping logic, HDL to netlist, high-level language to RTL or netlist
G06F 2111/04
Details relating to CAD techniques: constraint-based CAD
G06F 2111/20
Details relating to CAD techniques: configuration CAD, e.g. designing by assembling or positioning modules selected from libraries of predesigned…