new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35144 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/and-xor-merge.ll b/test/Transforms/InstCombine/and-xor-merge.ll
new file mode 100644 (file)
index 0000000..290c2d7
--- /dev/null
+++ b/test/Transforms/InstCombine/and-xor-merge.ll
@@ -0,0 +1,19 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep and | wc -l | grep 1 &&
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep xor | wc -l | grep 2
+
+; (x&z) ^ (y&z) -> (x^y)&z
+define i32 @test1(i32 %x, i32 %y, i32 %z) {
+        %tmp3 = and i32 %z, %x
+        %tmp6 = and i32 %z, %y
+        %tmp7 = xor i32 %tmp3, %tmp6
+        ret i32 %tmp7
+}
+
+; (x & y) ^ (x|y) -> x^y
+define i32 @test2(i32 %x, i32 %y, i32 %z) {
+        %tmp3 = and i32 %y, %x
+        %tmp6 = or i32 %y, %x
+        %tmp7 = xor i32 %tmp3, %tmp6
+        ret i32 %tmp7
+}
+