test/Transforms/InstCombine/apint-and-xor-merge.ll


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22

; This test case checks that the merge of and/xor can work on arbitrary
; precision integers.

; RUN: opt < %s -instcombine -S | grep and | count 1
; RUN: opt < %s -instcombine -S | grep xor | count 2

; (x &z ) ^ (y & z) -> (x ^ y) & z
define i57 @test1(i57 %x, i57 %y, i57 %z) {
        %tmp3 = and i57 %z, %x
        %tmp6 = and i57 %z, %y
        %tmp7 = xor i57 %tmp3, %tmp6
        ret i57 %tmp7
}

; (x & y) ^ (x | y) -> x ^ y
define i23 @test2(i23 %x, i23 %y, i23 %z) {
        %tmp3 = and i23 %y, %x
        %tmp6 = or i23 %y, %x
        %tmp7 = xor i23 %tmp3, %tmp6
        ret i23 %tmp7
}