From 2f1b13255ddf2fe1cfe646959d09c0ff0887b378 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 8 May 2005 18:54:40 +0000
Subject: [PATCH] new testcase

llvm-svn: 21777
---
 .../Transforms/Reassociate/inverses.ll        | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 llvm/test/Regression/Transforms/Reassociate/inverses.ll

diff --git a/llvm/test/Regression/Transforms/Reassociate/inverses.ll b/llvm/test/Regression/Transforms/Reassociate/inverses.ll
new file mode 100644
index 000000000000..0ce704698a2f
--- /dev/null
+++ b/llvm/test/Regression/Transforms/Reassociate/inverses.ll
@@ -0,0 +1,24 @@
+; RUN: llvm-as < %s | opt -reassociate -dce | llvm-dis | not grep '\(and\|sub\)'
+
+int %test1(int %a, int %b) {
+        %tmp.2 = and int %b, %a
+        %tmp.4 = xor int %a, -1
+        %tmp.5 = and int %tmp.2, %tmp.4 ; (A&B)&~A == 0
+        ret int %tmp.5
+}
+
+int %test2(int %a, int %b) {
+	%tmp.1 = and int %a, 1234
+        %tmp.2 = and int %b, %tmp.1
+        %tmp.4 = xor int %a, -1
+        %tmp.5 = and int %tmp.2, %tmp.4 ; A&~A == 0
+        ret int %tmp.5
+}
+
+int %test3(int %b, int %a) {
+	%tmp.1 = add int %a, 1234
+        %tmp.2 = add int %b, %tmp.1
+        %tmp.4 = sub int 0, %a
+        %tmp.5 = add int %tmp.2, %tmp.4   ; (b+(a+1234))+-a -> b+1234
+        ret int %tmp.5
+}