Description
Returns a collection of instance (cell) objects in the current design that match a specified
search pattern. You can use this command only as part of a -from,
-to argument in the following Tcl commands: set_max
delay, set_multicycle_path, and
set_false_path. Wildcards can be used to select multiple cells
at once. If no objects match the criteria, the empty string is returned.
get_cells pattern
Arguments
| Parameter | Type | Description |
|---|
pattern | string | Specifies the pattern to match the instances to return. For example, get_cells U18* returns all instances starting with the characters U18, where * is a wild card character that represents any character string. This is mandatory. |
| Return Type | Description |
|---|
object | Returns an object representing the cells (instances) that match those specified in the pattern argument. |
Error Codes
| Error Code | Description |
|---|
| None | Required parameter _AtclParam0_ is missing. |
Supported
Families
| PolarFire® |
| PolarFire SoC |
| SmartFusion® 2 |
| IGLOO® 2 |
| RTG4™ |
Example
The following example sets maximum delay constraining all paths from reg* cells to out ports with a delay less than 2 ns.
set_max_delay 2 -from [get_cells {reg*}] -to [get_ports {out}]
Related Examples on GitHub
