1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
; This test makes sure that and instructions are properly eliminated.
; This test is for Integer BitWidth > 64 && BitWidth <= 1024.
; RUN: opt < %s -instcombine -S | not grep "and "
; END.
define i999 @test0(i999 %A) {
%B = and i999 %A, 0 ; zero result
ret i999 %B
}
define i477 @test1(i477 %A, i477 %B) {
;; (~A & ~B) == (~(A | B)) - De Morgan's Law
%NotA = xor i477 %A, -1
%NotB = xor i477 %B, -1
%C1 = and i477 %NotA, %NotB
ret i477 %C1
}
define i129 @tst(i129 %A, i129 %B) {
;; (~A & ~B) == (~(A | B)) - De Morgan's Law
%NotA = xor i129 %A, -1
%NotB = xor i129 %B, -1
%C1 = and i129 %NotA, %NotB
ret i129 %C1
}
define i65 @test(i65 %A, i65 %B) {
;; (~A & ~B) == (~(A | B)) - De Morgan's Law
%NotA = xor i65 %A, -1
%NotB = xor i65 -1, %B
%C1 = and i65 %NotA, %NotB
ret i65 %C1
}
define i66 @tes(i66 %A, i66 %B) {
;; (~A & ~B) == (~(A | B)) - De Morgan's Law
%NotA = xor i66 %A, -1
%NotB = xor i66 %B, -1
%C1 = and i66 %NotA, %NotB
ret i66 %C1
}
define i1005 @test2(i1005 %x) {
%tmp.2 = and i1005 %x, -1 ; noop
ret i1005 %tmp.2
}
define i123 @test3(i123 %x) {
%tmp.0 = and i123 %x, 127
%tmp.2 = and i123 %tmp.0, 128
ret i123 %tmp.2
}
define i1 @test4(i737 %x) {
%A = and i737 %x, -2147483648
%B = icmp ne i737 %A, 0
ret i1 %B
}
define i117 @test5(i117 %A, i117* %P) {
%B = or i117 %A, 3
%C = xor i117 %B, 12
store i117 %C, i117* %P
%r = and i117 %C, 3
ret i117 %r
}
define i117 @test6(i117 %A, i117 %B) {
;; ~(~X & Y) --> (X | ~Y)
%t0 = xor i117 %A, -1
%t1 = and i117 %t0, %B
%r = xor i117 %t1, -1
ret i117 %r
}
define i1024 @test7(i1024 %A) {
%X = ashr i1024 %A, 1016 ;; sign extend
%C1 = and i1024 %X, 255
ret i1024 %C1
}
|
