From f065f05397d0a46482f3dd1ebad31cb2d27bd236 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Thu, 4 Aug 2005 22:49:32 +0000
Subject: add a testcase nate requested

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22663 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Transforms/CondProp/phisimplify.ll | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 test/Transforms/CondProp/phisimplify.ll

(limited to 'test/Transforms')

diff --git a/test/Transforms/CondProp/phisimplify.ll b/test/Transforms/CondProp/phisimplify.ll
new file mode 100644
index 0000000..818bcab
--- /dev/null
+++ b/test/Transforms/CondProp/phisimplify.ll
@@ -0,0 +1,33 @@
+; RUN: llvm-as < %s | opt -condprop | llvm-dis | not grep phi
+
+int %test(uint %C, bool %Val) {
+        switch uint %C, label %T1 [
+                 uint 4, label %T2
+                 uint 17, label %T3
+        ]
+T1:
+	call void %a()
+	br label %Cont
+T2:
+	call void %b()
+	br label %Cont
+T3:
+	call void %c()
+	br label %Cont
+
+Cont:
+	;; PHI becomes dead after threading T2
+	%C2 = phi bool [%Val, %T1], [true, %T2], [%Val, %T3]
+	br bool %C2, label %L2, label %F2
+L2:
+	call void %d()
+	ret int 17
+F2:
+	call void %e()
+	ret int 1
+}
+declare void %a()
+declare void %b()
+declare void %c()
+declare void %d()
+declare void %e()
-- 
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