Test that demorgan's law is instcombined successfully

llvm-svn: 3494

1 files changed, 10 insertions, 0 deletions

diff --git a/llvm/test/Regression/Transforms/InstCombine/not.ll b/llvm/test/Regression/Transforms/InstCombine/not.ll
index 8bc85866499..57560d61d6d 100644
--- a/llvm/test/Regression/Transforms/InstCombine/not.ll
+++ b/llvm/test/Regression/Transforms/InstCombine/not.ll
@@ -19,3 +19,13 @@ bool %test2(int %A, int %B) {
 	%Ret = xor bool %cond, true
 	ret bool %Ret
 }
+
+
+; Test that demorgans law can be instcombined
+int %test3(int %A, int %B) {
+	%a = xor int %A, -1
+	%b = xor int %B, -1
+	%c = and int %a, %b
+	%d = xor int %c, -1
+	ret int %d
+}