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
125
126
127
128
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=arm-eabi -mattr=+v6 %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-V6
; RUN: llc -mtriple=arm-eabi -mattr=+v7 %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-V7
define i32 @test0(i8 %A) {
; CHECK-LABEL: test0:
; CHECK: @ %bb.0:
; CHECK-NEXT: sxtb r0, r0
; CHECK-NEXT: bx lr
%B = sext i8 %A to i32
ret i32 %B
}
define signext i8 @test1(i32 %A) {
; CHECK-V6-LABEL: test1:
; CHECK-V6: @ %bb.0:
; CHECK-V6-NEXT: lsr r0, r0, #8
; CHECK-V6-NEXT: sxtb r0, r0
; CHECK-V6-NEXT: bx lr
;
; CHECK-V7-LABEL: test1:
; CHECK-V7: @ %bb.0:
; CHECK-V7-NEXT: sbfx r0, r0, #8, #8
; CHECK-V7-NEXT: bx lr
%B = lshr i32 %A, 8
%C = shl i32 %A, 24
%D = or i32 %B, %C
%E = trunc i32 %D to i8
ret i8 %E
}
define signext i32 @test2(i32 %A, i32 %X) {
; CHECK-LABEL: test2:
; CHECK: @ %bb.0:
; CHECK-NEXT: sxtab r0, r1, r0, ror #8
; CHECK-NEXT: bx lr
%B = lshr i32 %A, 8
%C = shl i32 %A, 24
%D = or i32 %B, %C
%E = trunc i32 %D to i8
%F = sext i8 %E to i32
%G = add i32 %F, %X
ret i32 %G
}
define signext i32 @test3(i32 %A, i32 %X) {
; CHECK-LABEL: test3:
; CHECK: @ %bb.0:
; CHECK-NEXT: sxtab r0, r1, r0, ror #16
; CHECK-NEXT: bx lr
%B = lshr i32 %A, 16
%C = shl i32 %A, 16
%D = or i32 %B, %C
%E = trunc i32 %D to i8
%F = sext i8 %E to i32
%G = add i32 %F, %X
ret i32 %G
}
define signext i32 @test4(i32 %A, i32 %X) {
; CHECK-LABEL: test4:
; CHECK: @ %bb.0:
; CHECK-NEXT: sxtah r0, r1, r0, ror #8
; CHECK-NEXT: bx lr
%B = lshr i32 %A, 8
%C = shl i32 %A, 24
%D = or i32 %B, %C
%E = trunc i32 %D to i16
%F = sext i16 %E to i32
%G = add i32 %F, %X
ret i32 %G
}
define signext i32 @test5(i32 %A, i32 %X) {
; CHECK-LABEL: test5:
; CHECK: @ %bb.0:
; CHECK-NEXT: sxtah r0, r1, r0, ror #24
; CHECK-NEXT: bx lr
%B = lshr i32 %A, 24
%C = shl i32 %A, 8
%D = or i32 %B, %C
%E = trunc i32 %D to i16
%F = sext i16 %E to i32
%G = add i32 %F, %X
ret i32 %G
}
define i32 @test6(i8 %A, i32 %X) {
; CHECK-LABEL: test6:
; CHECK: @ %bb.0:
; CHECK-NEXT: sxtab r0, r1, r0
; CHECK-NEXT: bx lr
%sext = sext i8 %A to i32
%add = add i32 %X, %sext
ret i32 %add
}
define i32 @test7(i32 %A, i32 %X) {
; CHECK-LABEL: test7:
; CHECK: @ %bb.0:
; CHECK-NEXT: sxtab r0, r1, r0
; CHECK-NEXT: bx lr
%shl = shl i32 %A, 24
%shr = ashr i32 %shl, 24
%add = add i32 %X, %shr
ret i32 %add
}
define i32 @test8(i16 %A, i32 %X) {
; CHECK-LABEL: test8:
; CHECK: @ %bb.0:
; CHECK-NEXT: sxtah r0, r1, r0
; CHECK-NEXT: bx lr
%sext = sext i16 %A to i32
%add = add i32 %X, %sext
ret i32 %add
}
define i32 @test9(i32 %A, i32 %X) {
; CHECK-LABEL: test9:
; CHECK: @ %bb.0:
; CHECK-NEXT: sxtah r0, r1, r0
; CHECK-NEXT: bx lr
%shl = shl i32 %A, 16
%shr = ashr i32 %shl, 16
%add = add i32 %X, %shr
ret i32 %add
}
|
