From 13d38cd8058da478333b394b73dfd070b119b76d Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 26 Nov 2001 19:16:37 +0000
Subject: [PATCH] Rename irreducible to cfgstructures.ll  Include other
 interesting structures

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1387 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Feature/cfgstructures.ll | 53 +++++++++++++++++++++++++++++++++++
 test/irreducible.ll           | 14 ---------
 2 files changed, 53 insertions(+), 14 deletions(-)
 create mode 100644 test/Feature/cfgstructures.ll
 delete mode 100644 test/irreducible.ll

diff --git a/test/Feature/cfgstructures.ll b/test/Feature/cfgstructures.ll
new file mode 100644
index 00000000000..a28dfb3d70e
--- /dev/null
+++ b/test/Feature/cfgstructures.ll
@@ -0,0 +1,53 @@
+implementation
+
+;; This is an irreducible flow graph
+
+
+void "irreducible"(bool %cond)
+begin
+	br bool %cond, label %X, label %Y
+
+X:
+	br label %Y
+Y:
+	br label %X
+end
+
+;; This is a pair of loops that share the same header
+
+void "sharedheader"(bool %cond)
+begin
+	br label %A
+A:
+	br bool %cond, label %X, label %Y
+
+X:
+	br label %A
+Y:
+	br label %A
+end
+
+;; This is a simple nested loop
+void "nested"(bool %cond1, bool %cond2, bool %cond3)
+begin
+	br label %Loop1
+
+Loop1:
+	br label %Loop2
+
+Loop2:
+	br label %Loop3
+
+Loop3:
+	br bool %cond3, label %Loop3, label %L3Exit
+
+L3Exit:
+	br bool %cond2, label %Loop2, label %L2Exit
+
+L2Exit:
+	br bool %cond1, label %Loop1, label %L1Exit
+
+L1Exit:
+	ret void
+end
+
diff --git a/test/irreducible.ll b/test/irreducible.ll
deleted file mode 100644
index 4daed8a2b34..00000000000
--- a/test/irreducible.ll
+++ /dev/null
@@ -1,14 +0,0 @@
-implementation
-
-;; This is an irreducible flow graph
-
-void "irreducible"(bool %cond)
-begin
-	br bool %cond, label %X, label %Y
-
-X:
-	br label %Y
-Y:
-	br label %X
-end
-