diff --git a/test/Transforms/InstCombine/and-xor-merge.ll b/test/Transforms/InstCombine/and-xor-merge.ll new file mode 100644 index 00000000000..290c2d73ee0 --- /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 +} +