dontTouch

Attributes

Note

Because this is an optimization barrier, constants will not be propagated through a signal's leaves marked as dontTouch.

Example

class MyModule extends Module {
 val io = IO(new Bundle {
   val a = Input(UInt(32.W))
   val b = Output(UInt(32.W))
 })
 io.b := io.a
 val dead = io.a +% 1.U // normally dead would be pruned by DCE
 dontTouch(dead) // Marking it as such will preserve it
}

Source

dontTouch.scala

Graph

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Supertypes

class Object

trait Matchable

class Any

Self type

dontTouch.type