From 553bc38e3e0ec56eefe4b1f7aae6dc194beffa0e Mon Sep 17 00:00:00 2001
From: Cliff Click <cliffc@acm.org>
Date: Sat, 11 Nov 2023 23:17:22 +0000
Subject: Chapter 6: Peepholes for If
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Co-authored-by: Dibyendu Majumdar <mobile@majumdar.org.uk>
Co-authored-by: Thalia Archibald <thalia@archibald.dev>
Co-authored-by: Yichen Yan <oraluben@outlook.com>
Co-authored-by: tannal <tannal2409@gmail.com>
Co-authored-by: hadha <helsgithub15@gmail.com>
Co-authored-by: Tamás Hadházy <85063808+Hels15@users.noreply.github.com>
Co-authored-by: Tamas Hadhazy <helsgithub15@gmail.com>
Co-authored-by: Robert Obkircher <robert.obkircher@gmail.com>
---
 docs/chapter06/06-graph3-nonconst.gv | 86 ++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 docs/chapter06/06-graph3-nonconst.gv

(limited to 'docs/chapter06/06-graph3-nonconst.gv')

diff --git a/docs/chapter06/06-graph3-nonconst.gv b/docs/chapter06/06-graph3-nonconst.gv
new file mode 100644
index 00000000..7cd4e8e2
--- /dev/null
+++ b/docs/chapter06/06-graph3-nonconst.gv
@@ -0,0 +1,86 @@
+digraph chapter06 {
+/*
+int a = 0;
+int b = 1;
+if( arg ) {
+    a = 2;
+    if( arg ) { b = 2; }
+    else b = 3;
+}
+return a+b;
+
+*/
+	rankdir=BT;
+	ordering="in";
+	concentrate="true";
+	subgraph cluster_Nodes {
+		Start2 [ shape=plaintext label=<
+			<TABLE BORDER="0" CELLBORDER="1" CELLSPACING="0" CELLPADDING="4">
+			<TR><TD BGCOLOR="yellow">Start</TD></TR>
+			<TR><TD>
+				<TABLE BORDER="0" CELLBORDER="1" CELLSPACING="0">
+				<TR><TD PORT="p0" BGCOLOR="yellow">$ctrl</TD><TD PORT="p1">arg</TD></TR>
+				</TABLE>
+			</TD></TR>
+			</TABLE>>
+		];
+		Stop3 [ shape=box style=filled fillcolor=yellow label="Stop" ];
+		Con_6 [ label="#0" ];
+		Con_7 [ label="#1" ];
+		If8 [ shape=plaintext label=<
+			<TABLE BORDER="0" CELLBORDER="1" CELLSPACING="0" CELLPADDING="4">
+			<TR><TD BGCOLOR="yellow">If</TD></TR>
+			<TR><TD>
+				<TABLE BORDER="0" CELLBORDER="1" CELLSPACING="0">
+				<TR><TD PORT="p0" BGCOLOR="yellow">True</TD><TD PORT="p1" BGCOLOR="yellow">False</TD></TR>
+				</TABLE>
+			</TD></TR>
+			</TABLE>>
+		];
+		Con_12 [ label="#2" ];
+		If13 [ shape=plaintext label=<
+			<TABLE BORDER="0" CELLBORDER="1" CELLSPACING="0" CELLPADDING="4">
+			<TR><TD BGCOLOR="yellow">If</TD></TR>
+			<TR><TD>
+				<TABLE BORDER="0" CELLBORDER="1" CELLSPACING="0">
+				<TR><TD PORT="p0" BGCOLOR="yellow">True</TD><TD PORT="p1" BGCOLOR="yellow">False</TD></TR>
+				</TABLE>
+			</TD></TR>
+			</TABLE>>
+		];
+		Con_17 [ label="#2" ];
+		Con_18 [ label="#3" ];
+		Region19 [ shape=box style=filled fillcolor=yellow label="Region" ];
+		Phi_b20 [ style=filled fillcolor=lightyellow label="&phi;_b" ];
+		Region21 [ shape=box style=filled fillcolor=yellow label="Region" ];
+		Phi_a22 [ style=filled fillcolor=lightyellow label="&phi;_a" ];
+		Phi_b23 [ style=filled fillcolor=lightyellow label="&phi;_b" ];
+		Add24 [ label="+" ];
+		Return25 [ shape=box style=filled fillcolor=yellow label="Return" ];
+		{ rank=same; Region19;Phi_b20;}
+		{ rank=same; Region21;Phi_b23;Phi_a22;}
+	}
+	edge [ fontname=Helvetica, fontsize=8 ];
+	Stop3 -> Return25[taillabel=0 color=red];
+	If8 -> Start2:p0[taillabel=0 color=red];
+	If8 -> Start2:p1[taillabel=1];
+	If13 -> If8:p0[taillabel=0 color=red];
+	If13 -> Start2:p1[taillabel=1];
+	Region19 -> If13:p0[taillabel=1 color=red];
+	Region19 -> If13:p1[taillabel=2 color=red];
+	Phi_b20 -> Region19 [style=dotted taillabel=0];
+	Phi_b20 -> Con_17[taillabel=1];
+	Phi_b20 -> Con_18[taillabel=2];
+	Region21 -> Region19[taillabel=1 color=red];
+	Region21 -> If8:p1[taillabel=2 color=red];
+	Phi_a22 -> Region21 [style=dotted taillabel=0];
+	Phi_a22 -> Con_12[taillabel=1];
+	Phi_a22 -> Con_6[taillabel=2];
+	Phi_b23 -> Region21 [style=dotted taillabel=0];
+	Phi_b23 -> Phi_b20[taillabel=1];
+	Phi_b23 -> Con_7[taillabel=2];
+	Add24 -> Phi_b23[taillabel=1];
+	Add24 -> Phi_a22[taillabel=2];
+	Return25 -> Region21[taillabel=0 color=red];
+	Return25 -> Add24[taillabel=1];
+}
-- 
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