blob: 2112ca27b9770fd2eb44568e8ed1059152931b4b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
// See LICENSE for license details.
package firrtl.passes
package memlib
import firrtl.ir._
import AnalysisUtils.eqMems
import firrtl.Mappers._
/** Resolves annotation ref to memories that exactly match (except name) another memory
*/
object ResolveMemoryReference extends Pass {
def name = "Resolve Memory Reference"
type AnnotatedMemories = collection.mutable.ArrayBuffer[(String, DefAnnotatedMemory)]
/** If a candidate memory is identical except for name to another, add an
* annotation that references the name of the other memory.
*/
def updateMemStmts(mname: String, uniqueMems: AnnotatedMemories)(s: Statement): Statement = s match {
case m: DefAnnotatedMemory =>
uniqueMems find (x => eqMems(x._2, m)) match {
case None =>
uniqueMems += (mname -> m)
m
case Some((module, proto)) => m copy (memRef = Some(module -> proto.name))
}
case s => s map updateMemStmts(mname, uniqueMems)
}
def run(c: Circuit) = {
val uniqueMems = new AnnotatedMemories
c copy (modules = c.modules map (m => m map updateMemStmts(m.name, uniqueMems)))
}
}
|
