1 ; This test makes sure that and instructions are properly eliminated.
2 ; This test is for Integer BitWidth <= 64 && BitWidth % 8 != 0.
4 ; RUN: opt < %s -instcombine -S | not grep {and }
7 define i39 @test0(i39 %A) {
8 %B = and i39 %A, 0 ; zero result
12 define i47 @test1(i47 %A, i47 %B) {
13 ;; (~A & ~B) == (~(A | B)) - De Morgan's Law
14 %NotA = xor i47 %A, -1
15 %NotB = xor i47 %B, -1
16 %C1 = and i47 %NotA, %NotB
20 define i15 @test2(i15 %x) {
21 %tmp.2 = and i15 %x, -1 ; noop
25 define i23 @test3(i23 %x) {
26 %tmp.0 = and i23 %x, 127
27 %tmp.2 = and i23 %tmp.0, 128
31 define i1 @test4(i37 %x) {
32 %A = and i37 %x, -2147483648
33 %B = icmp ne i37 %A, 0
37 define i7 @test5(i7 %A, i7* %P) {
45 define i7 @test6(i7 %A, i7 %B) {
46 ;; ~(~X & Y) --> (X | ~Y)
53 define i47 @test7(i47 %A) {
54 %X = ashr i47 %A, 39 ;; sign extend