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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
; RUN: llc -verify-machineinstrs -o - %s -mtriple=arm64-apple-ios7.0 | FileCheck %s
define i64 @test0() {
; CHECK-LABEL: test0:
; Not produced by move wide instructions, but good to make sure we can return 0 anyway:
; CHECK: mov x0, xzr
ret i64 0
}
define i64 @test1() {
; CHECK-LABEL: test1:
; CHECK: mov w0, #1
ret i64 1
}
define i64 @test2() {
; CHECK-LABEL: test2:
; CHECK: mov w0, #65535
ret i64 65535
}
define i64 @test3() {
; CHECK-LABEL: test3:
; CHECK: mov w0, #65536
ret i64 65536
}
define i64 @test4() {
; CHECK-LABEL: test4:
; CHECK: mov w0, #-65536
ret i64 4294901760
}
define i64 @test5() {
; CHECK-LABEL: test5:
; CHECK: mov x0, #4294967296
ret i64 4294967296
}
define i64 @test6() {
; CHECK-LABEL: test6:
; CHECK: mov x0, #281470681743360
ret i64 281470681743360
}
define i64 @test7() {
; CHECK-LABEL: test7:
; CHECK: mov x0, #281474976710656
ret i64 281474976710656
}
; A 32-bit MOVN can generate some 64-bit patterns that a 64-bit one
; couldn't. Useful even for i64
define i64 @test8() {
; CHECK-LABEL: test8:
; CHECK: mov w0, #-60876
ret i64 4294906420
}
define i64 @test9() {
; CHECK-LABEL: test9:
; CHECK: mov x0, #-1
ret i64 -1
}
define i64 @test10() {
; CHECK-LABEL: test10:
; CHECK: mov x0, #-3989504001
ret i64 18446744069720047615
}
; For reasonably legitimate reasons returning an i32 results in the
; selection of an i64 constant, so we need a different idiom to test that selection
@var32 = global i32 0
define void @test11() {
; CHECK-LABEL: test11:
; CHECK: str wzr
store i32 0, i32* @var32
ret void
}
define void @test12() {
; CHECK-LABEL: test12:
; CHECK: mov {{w[0-9]+}}, #1
store i32 1, i32* @var32
ret void
}
define void @test13() {
; CHECK-LABEL: test13:
; CHECK: mov {{w[0-9]+}}, #65535
store i32 65535, i32* @var32
ret void
}
define void @test14() {
; CHECK-LABEL: test14:
; CHECK: mov {{w[0-9]+}}, #65536
store i32 65536, i32* @var32
ret void
}
define void @test15() {
; CHECK-LABEL: test15:
; CHECK: mov {{w[0-9]+}}, #-65536
store i32 4294901760, i32* @var32
ret void
}
define void @test16() {
; CHECK-LABEL: test16:
; CHECK: mov {{w[0-9]+}}, #-1
store i32 -1, i32* @var32
ret void
}
define i64 @test17() {
; CHECK-LABEL: test17:
; Mustn't MOVN w0 here.
; CHECK: mov x0, #-3
ret i64 -3
}
|
