Add graphviz type hierarchy with built svg/png

Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>

4 files changed, 323 insertions, 776 deletions

diff --git a/doc/images/Makefile b/doc/images/Makefile
new file mode 100644
index 00000000..20a41d1f
--- /dev/null
+++ b/doc/images/Makefile
@@ -0,0 +1,12 @@
+.PHONY: all
+
+sources = \
+	type_hierarchy.dot
+
+all: $(sources:%.dot=%.svg) $(sources:%.dot=%.png)
+
+%.svg: %.dot
+	dot -Tsvg $< -o $@
+
+%.png: %.dot
+	dot -Tpng $< -o $@
diff --git a/doc/images/type_hierarchy.dot b/doc/images/type_hierarchy.dot
new file mode 100644
index 00000000..d3bf6eb4
--- /dev/null
+++ b/doc/images/type_hierarchy.dot
@@ -0,0 +1,52 @@
+digraph TypeHierarchy {
+  graph [rankdir=BT bgcolor="transparent"]
+  { node [style=filled,shape=box]
+    { node [fillcolor="#f7fbff"]
+      Data
+      Element
+      Bits Num
+      Aggregate
+      VecLike
+      "Chisel Internal"
+    }
+    { node [fillcolor="#e5f5e0"]
+      Bool UInt SInt FixedPoint
+      Reset
+      AsyncReset
+      Record
+      Bundle
+      Vec
+      "Chisel Types"
+    }
+    { node [fillcolor="#fcbba1"]
+      "User Types"
+      Ellipsis [label="..."]
+    }
+
+    subgraph cluster_data_hierarchy {
+      color=transparent
+      Element
+      Bits Num
+      Reset
+      Bool UInt SInt FixedPoint
+      color=transparent
+      Aggregate
+      VecLike
+      Record
+      Bundle
+      Vec
+
+      {Aggregate Element} -> Data
+      {Bits Reset} -> Element
+      {FixedPoint SInt UInt} -> {Bits Num}
+      Bool -> {UInt Reset}
+      Ellipsis -> Bundle -> Record -> Aggregate
+      Vec -> {Aggregate VecLike}
+      AsyncReset -> {Element Reset}
+    }
+    subgraph cluster_legend {
+      label=Legend
+      "User Types" -> "Chisel Types" -> "Chisel Internal"
+    }
+  }
+}
diff --git a/doc/images/type_hierarchy.png b/doc/images/type_hierarchy.png
index 4856ab6c..f3947975 100644
--- a/doc/images/type_hierarchy.png
+++ b/doc/images/type_hierarchy.png
diff --git a/doc/images/type_hierarchy.svg b/doc/images/type_hierarchy.svg
index c74a0eeb..c120daba 100644
--- a/doc/images/type_hierarchy.svg
+++ b/doc/images/type_hierarchy.svg
@@ -1,778 +1,261 @@
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+<!-- Bool&#45;&gt;UInt -->
+<g id="edge11" class="edge">
+<title>Bool&#45;&gt;UInt</title>
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+<!-- Reset -->
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+<text text-anchor="middle" x="189" y="-197.3" font-family="Times,serif" font-size="14.00">Reset</text>
+</g>
+<!-- Bool&#45;&gt;Reset -->
+<g id="edge12" class="edge">
+<title>Bool&#45;&gt;Reset</title>
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+<!-- UInt&#45;&gt;Bits -->
+<g id="edge5" class="edge">
+<title>UInt&#45;&gt;Bits</title>
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+<polygon fill="black" stroke="black" points="368.18,-172.72 365.22,-182.9 373.88,-176.79 368.18,-172.72"/>
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+<!-- UInt&#45;&gt;Num -->
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+<title>UInt&#45;&gt;Num</title>
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+<polygon fill="black" stroke="black" points="314.93,-176.5 308,-184.51 318.42,-182.57 314.93,-176.5"/>
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+<!-- SInt -->
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+<title>SInt</title>
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+<text text-anchor="middle" x="331" y="-125.3" font-family="Times,serif" font-size="14.00">SInt</text>
+</g>
+<!-- SInt&#45;&gt;Bits -->
+<g id="edge7" class="edge">
+<title>SInt&#45;&gt;Bits</title>
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+<polygon fill="black" stroke="black" points="341.29,-174.41 347.62,-182.9 347.96,-172.31 341.29,-174.41"/>
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+<!-- SInt&#45;&gt;Num -->
+<g id="edge8" class="edge">
+<title>SInt&#45;&gt;Num</title>
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+<polygon fill="black" stroke="black" points="296.18,-172.72 293.22,-182.9 301.88,-176.79 296.18,-172.72"/>
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+<!-- FixedPoint -->
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+<title>FixedPoint</title>
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+<text text-anchor="middle" x="248" y="-125.3" font-family="Times,serif" font-size="14.00">FixedPoint</text>
+</g>
+<!-- FixedPoint&#45;&gt;Bits -->
+<g id="edge9" class="edge">
+<title>FixedPoint&#45;&gt;Bits</title>
+<path fill="none" stroke="black" d="M273.69,-147.12C287.29,-156.19 304.17,-167.45 318.86,-177.24"/>
+<polygon fill="black" stroke="black" points="316.95,-180.18 327.22,-182.81 320.84,-174.35 316.95,-180.18"/>
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+<!-- FixedPoint&#45;&gt;Num -->
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+<title>FixedPoint&#45;&gt;Num</title>
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+<polygon fill="black" stroke="black" points="265.51,-175.34 272.94,-182.9 271.84,-172.36 265.51,-175.34"/>
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+<!-- Reset&#45;&gt;Element -->
+<g id="edge4" class="edge">
+<title>Reset&#45;&gt;Element</title>
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+<polygon fill="black" stroke="black" points="212.59,-248.12 220.74,-254.9 218.59,-244.52 212.59,-248.12"/>
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+<!-- AsyncReset -->
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+<title>AsyncReset</title>
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+<text text-anchor="middle" x="151" y="-125.3" font-family="Times,serif" font-size="14.00">AsyncReset</text>
+</g>
+<!-- AsyncReset&#45;&gt;Element -->
+<g id="edge18" class="edge">
+<title>AsyncReset&#45;&gt;Element</title>
+<path fill="none" stroke="black" d="M187.11,-147C201.42,-155.68 216.46,-167.68 225,-183 235.4,-201.66 236.33,-226.05 234.98,-244.58"/>
+<polygon fill="black" stroke="black" points="231.48,-244.42 233.98,-254.72 238.45,-245.11 231.48,-244.42"/>
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+<!-- AsyncReset&#45;&gt;Reset -->
+<g id="edge19" class="edge">
+<title>AsyncReset&#45;&gt;Reset</title>
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+<polygon fill="black" stroke="black" points="171.87,-175.78 179.71,-182.9 178.02,-172.44 171.87,-175.78"/>
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+<!-- Record -->
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+<title>Record</title>
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+<text text-anchor="middle" x="44" y="-197.3" font-family="Times,serif" font-size="14.00">Record</text>
+</g>
+<!-- Record&#45;&gt;Aggregate -->
+<g id="edge15" class="edge">
+<title>Record&#45;&gt;Aggregate</title>
+<path fill="none" stroke="black" d="M47.96,-219.3C49.72,-227.02 51.84,-236.29 53.8,-244.89"/>
+<polygon fill="black" stroke="black" points="50.45,-245.93 56.09,-254.9 57.27,-244.37 50.45,-245.93"/>
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+<!-- Bundle -->
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+<title>Bundle</title>
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+<text text-anchor="middle" x="44" y="-125.3" font-family="Times,serif" font-size="14.00">Bundle</text>
+</g>
+<!-- Bundle&#45;&gt;Record -->
+<g id="edge14" class="edge">
+<title>Bundle&#45;&gt;Record</title>
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+<polygon fill="black" stroke="black" points="40.5,-172.9 44,-182.9 47.5,-172.9 40.5,-172.9"/>
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+<!-- Vec -->
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+<text text-anchor="middle" x="117" y="-197.3" font-family="Times,serif" font-size="14.00">Vec</text>
+</g>
+<!-- Vec&#45;&gt;Aggregate -->
+<g id="edge16" class="edge">
+<title>Vec&#45;&gt;Aggregate</title>
+<path fill="none" stroke="black" d="M102.91,-219.3C96.08,-227.7 87.74,-237.93 80.24,-247.14"/>
+<polygon fill="black" stroke="black" points="77.53,-244.93 73.93,-254.9 82.96,-249.35 77.53,-244.93"/>
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+<!-- Vec&#45;&gt;VecLike -->
+<g id="edge17" class="edge">
+<title>Vec&#45;&gt;VecLike</title>
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+<polygon fill="black" stroke="black" points="131.85,-247 138.91,-254.9 138.32,-244.32 131.85,-247"/>
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+<!-- Chisel Types -->
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+<title>Chisel Types</title>
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+<text text-anchor="middle" x="502" y="-125.3" font-family="Times,serif" font-size="14.00">Chisel Types</text>
+</g>
+<!-- Chisel Types&#45;&gt;Chisel Internal -->
+<g id="edge21" class="edge">
+<title>Chisel Types&#45;&gt;Chisel Internal</title>
+<path fill="none" stroke="black" d="M502,-147.3C502,-155.02 502,-164.29 502,-172.89"/>
+<polygon fill="black" stroke="black" points="498.5,-172.9 502,-182.9 505.5,-172.9 498.5,-172.9"/>
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+<!-- User Types -->
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+<title>User Types</title>
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+</g>
+<!-- User Types&#45;&gt;Chisel Types -->
+<g id="edge20" class="edge">
+<title>User Types&#45;&gt;Chisel Types</title>
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+<!-- Ellipsis -->
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+</g>
+<!-- Ellipsis&#45;&gt;Bundle -->
+<g id="edge13" class="edge">
+<title>Ellipsis&#45;&gt;Bundle</title>
+<path fill="none" stroke="black" d="M44,-75.3C44,-83.02 44,-92.29 44,-100.89"/>
+<polygon fill="black" stroke="black" points="40.5,-100.9 44,-110.9 47.5,-100.9 40.5,-100.9"/>
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