jackkoenig

;buildInfoPackage: chisel3, version: 3.1-SNAPSHOT, scalaVersion: 2.11.7, sbtVersion: 0.13.12, builtAtString: 2017-03-28 18:36:39.417, builtAtMillis: 1490726199417
circuit StackOverflowModule : 
  module StackOverflowModule : 
    input clock : Clock
    input reset : UInt<1>
    output io : {flip foo : UInt<7000>, bar : UInt<1>}
    
    io is invalid
    io is invalid
    node bits_0 = bits(io.foo, 0, 0) @[Test.scala 10:21]

jackkoenig

circuit TLSPIFlash_qspi :
  module Queue_6 :
    input clock : Clock
    input reset : UInt<1>
    output io : { flip enq : { flip ready : UInt<1>, valid : UInt<1>, bits : UInt<8>}, deq : { flip ready : UInt<1>, valid : UInt<1>, bits : UInt<8>}, count : UInt<4>}
  
    io is invalid
    io is invalid
    cmem ram : UInt<8> [8] @[Decoupled.scala 182:24]
    reg value : UInt<3>, clock with : (reset => (reset, UInt<3>("h0"))) @[Counter.scala 17:33]

jackkoenig

module Test :
  input a : UInt<10>
  input b : UInt<2>
  output z : UInt<10>
  
  wire w : UInt<10>
  w <= dshl(a, b)
  ; Replace with
  node w = bits(dshl(a, b), 9, 0)
  

jackkoenig

case class Foo(name: String, value: Int)

val foo = Foo("hi", 3)

foo match {
  case foo: Foo => // Gets a ref
}
foo match {
  case Foo(n, v) => // Have refs to the fields of Foo
}

jackkoenig

133573,133577c133573
<     if (reset) begin
<       pending_0 <= 1'h0;
<     end else begin
<       pending_0 <= 1'h0;
<     end
---
>     pending_0 <= 1'h0;
169978,169982c169974
<     if (reset) begin

jackkoenig

Nonequivalent refers to objects that are case class different (!=)
Unique refers to objects that are different references (ne)

A difference between nonequivalent and unique node counts shows object duplication in the compiler.
Ideally these numbers would always be the same.

Here is a measure using an old version of BOOMs ROB.

*New* unique nodes is a way to measure object duplication, how many nodes in the new circuit are not
found in the old circuit (by reference: ne)

jackkoenig

#!/usr/bin/python

import sys
import os
import re
from collections import defaultdict

# Takes firrtl text, returns a dict from module name to module definition
def split_firrtl(firrtl_lines):
    modules = defaultdict(list)

jackkoenig

#!/usr/bin/python

import sys
import os
import re
from collections import defaultdict
from split_firrtl import split_firrtl

def get_submods(modules):
    submods = defaultdict(list)

jackkoenig

{
    "name": {
        "title": "Full Name",
        "type": "string",
        "githubKey": "name",
        "require": true
    },
    "email": {
        "title": "E-Mail",
        "type": "string",

jackkoenig

The FIRRTL project admins request that You sign a Contributor License Agreement ("CLA")
regarding any software code and/or documentation You desire to contribute to 
the FIRRTL Project ("Contribution").  

If you are submitting your Contribution to the FIRRTL Project on behalf of the Regents
of the University of California, You hearby agree to license your Contribution under
the 3-Clause BSD License, and to include the appropriate copyright notice required by
the license.

If you are submitting your Contribution to the FIRRTL Project on behalf of yourself or