1 ; This test makes sure that xor instructions are properly eliminated.
2 ; This test is for Integer BitWidth > 64 && BitWidth <= 1024.
4 ; RUN: opt < %s -instcombine -S | not grep "xor "
8 define i447 @test1(i447 %A, i447 %B) {
9 ;; (A & C1)^(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0
10 %A1 = and i447 %A, 70368744177664
11 %B1 = and i447 %B, 70368744177663
12 %C1 = xor i447 %A1, %B1
16 define i1005 @test2(i1005 %x) {
17 %tmp.2 = xor i1005 %x, 0
21 define i123 @test3(i123 %x) {
22 %tmp.2 = xor i123 %x, %x
26 define i737 @test4(i737 %x) {
28 %NotX = xor i737 -1, %x
29 %B = xor i737 %x, %NotX
33 define i700 @test5(i700 %A) {
34 ;; (A|B)^B == A & (~B)
35 %t1 = or i700 %A, 288230376151711743
36 %r = xor i700 %t1, 288230376151711743
40 define i77 @test6(i77 %A) {
46 define i1023 @test7(i1023 %A) {
47 ;; (A | C1) ^ C2 -> (A | C1) & ~C2 iff (C1&C2) == C2
48 %B1 = or i1023 %A, 70368744177663
49 %C1 = xor i1023 %B1, 703687463