From ff477f8594e9ccd42c28e8e181785331e94c8719 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 12 Dec 2004 05:52:12 +0000
Subject: [PATCH] New testcase.  Shrinking the variable to a bool allows
 instcombine to delete the condition.

llvm-svn: 18816
---
 .../Transforms/GlobalOpt/integer-bool.ll      | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 test/Regression/Transforms/GlobalOpt/integer-bool.ll

diff --git a/test/Regression/Transforms/GlobalOpt/integer-bool.ll b/test/Regression/Transforms/GlobalOpt/integer-bool.ll
new file mode 100644
index 00000000000..2daf9550f6e
--- /dev/null
+++ b/test/Regression/Transforms/GlobalOpt/integer-bool.ll
@@ -0,0 +1,22 @@
+; RUN: llvm-as < %s | opt -globalopt -instcombine | llvm-dis | grep 'ret bool true'
+
+;; check that global opt turns integers that only hold 0 or 1 into bools.
+
+%G = internal global int 0    ;; This only holds 0 or 1.
+
+implementation
+
+void %set1() {
+	store int 0, int* %G
+	ret void
+}
+void %set2() {
+	store int 1, int* %G
+	ret void
+}
+
+bool %get() {
+	%A = load int* %G
+	%C = setlt int %A, 2  ;; always true
+	ret bool %C
+}