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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
; RUN: llc -mtriple=thumbv8m.base-eabi -mattr=+execute-only %s -o - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-T2BASE %s
; RUN: llc -mtriple=thumbv8m.base-eabi -mcpu=cortex-m23 -mattr=+execute-only %s -o - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-T2BASE %s
; RUN: llc -mtriple=thumbv7m-eabi -mattr=+execute-only %s -o - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-T2 %s
; RUN: llc -mtriple=thumbv8m.main-eabi -mattr=+execute-only %s -o - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-T2 %s
; RUN: llc -mtriple=thumbv6m-eabi -mattr=+execute-only %s -o - | FileCheck --check-prefix=CHECK-T1 %s
; CHECK-NOT: {{^ *}}.text{{$}}
; CHECK: .section .text,"axy",%progbits,unique,0
@var = global i32 0
define i32 @global() minsize {
; CHECK-LABEL: global:
; CHECK: movw [[GLOBDEST:r[0-9]+]], :lower16:var
; CHECK-NEXT: movt [[GLOBDEST]], :upper16:var
; CHECK-T1-LABEL: global:
; CHECK-T1: movs [[GLOBDEST:r[0-9]+]], :upper8_15:var
; CHECK-T1-NEXT: lsls [[GLOBDEST]], [[GLOBDEST]], #8
; CHECK-T1-NEXT: adds [[GLOBDEST]], :upper0_7:var
; CHECK-T1-NEXT: lsls [[GLOBDEST]], [[GLOBDEST]], #8
; CHECK-T1-NEXT: adds [[GLOBDEST]], :lower8_15:var
; CHECK-T1-NEXT: lsls [[GLOBDEST]], [[GLOBDEST]], #8
; CHECK-T1-NEXT: adds [[GLOBDEST]], :lower0_7:var
%val = load i32, ptr @var
ret i32 %val
}
define i32 @jump_table(i32 %c, i32 %a, i32 %b) #0 {
; CHECK-LABEL: jump_table:
; CHECK-T2: adr.w [[REG_JT:r[0-9]+]], .LJTI1_0
; CHECK-T2: add.w [[REG_ENTRY:r[0-9]+]], [[REG_JT]], {{r[0-9]+}}, lsl #2
; CHECK-T2: mov pc, [[REG_ENTRY]]
; CHECK-T2BASE: lsls [[REG_OFFSET:r[0-9]+]], {{r[0-9]+}}, #2
; CHECK-T2BASE: adr [[REG_JT:r[0-9]+]], .LJTI1_0
; CHECK-T2BASE: adds [[REG_ENTRY:r[0-9]+]], [[REG_JT]], [[REG_OFFSET]]
; CHECK-T2BASE: mov pc, [[REG_ENTRY]]
; CHECK-LABEL: .LJTI1_0:
; CHECK-NEXT: b.w
; CHECK-NEXT: b.w
; CHECK-NEXT: b.w
; CHECK-NEXT: b.w
; CHECK-NEXT: b.w
; CHECK-NEXT: b.w
; CHECK-T1-LABEL: jump_table:
; CHECK-T1: lsls [[REG_OFFSET:r[0-9]+]], {{r[0-9]+}}, #2
; CHECK-T1-NEXT: movs [[REG_JT:r[0-9]+]], :upper8_15:.LJTI1_0
; CHECK-T1-NEXT: lsls [[REG_JT]], [[REG_JT]], #8
; CHECK-T1-NEXT: adds [[REG_JT]], :upper0_7:.LJTI1_0
; CHECK-T1-NEXT: lsls [[REG_JT]], [[REG_JT]], #8
; CHECK-T1-NEXT: adds [[REG_JT]], :lower8_15:.LJTI1_0
; CHECK-T1-NEXT: lsls [[REG_JT]], [[REG_JT]], #8
; CHECK-T1-NEXT: adds [[REG_JT]], :lower0_7:.LJTI1_0
; CHECK-T1-NEXT: ldr [[REG_ENTRY:r[0-9]+]], [[[REG_JT]], [[REG_OFFSET]]]
; CHECK-T1-NEXT: mov pc, [[REG_ENTRY]]
; CHECK-T1: .section .rodata,"a",%progbits
; CHECK-T1-NEXT: .p2align 2, 0x0
; CHECK-T1-NEXT: .LJTI1_0:
; CHECK-T1-NEXT: .long
; CHECK-T1-NEXT: .long
; CHECK-T1-NEXT: .long
; CHECK-T1-NEXT: .long
; CHECK-T1-NEXT: .long
; CHECK-T1-NEXT: .long
entry:
switch i32 %c, label %return [
i32 1, label %sw.bb
i32 2, label %sw.bb1
i32 3, label %sw.bb3
i32 4, label %sw.bb4
i32 5, label %sw.bb6
i32 6, label %sw.bb8
]
sw.bb: ; preds = %entry
%add = add nsw i32 %a, 6
br label %return
sw.bb1: ; preds = %entry
%add2 = add nsw i32 %a, 4
br label %return
sw.bb3: ; preds = %entry
%sub = add nsw i32 %a, -3
br label %return
sw.bb4: ; preds = %entry
%add5 = add nsw i32 %b, 5
br label %return
sw.bb6: ; preds = %entry
%add7 = add nsw i32 %a, 1
br label %return
sw.bb8: ; preds = %entry
%add9 = add nsw i32 %a, 2
br label %return
return: ; preds = %entry, %sw.bb8, %sw.bb6, %sw.bb4, %sw.bb3, %sw.bb1, %sw.bb
%retval.0 = phi i32 [ %add9, %sw.bb8 ], [ %add7, %sw.bb6 ], [ %add5, %sw.bb4 ], [ %sub, %sw.bb3 ], [ %add2, %sw.bb1 ], [ %add, %sw.bb ], [ 0, %entry ]
ret i32 %retval.0
}
@.str = private unnamed_addr constant [4 x i8] c"FOO\00", align 1
define hidden ptr @string_literal() {
entry:
; CHECK-LABEL: string_literal:
; CHECK: movw [[STRLIT:r[0-9]+]], :lower16:.L.str
; CHECK-NEXT: movt [[STRLIT]], :upper16:.L.str
; CHECK-T1-LABEL: string_literal:
; CHECK-T1: movs [[STRLIT:r[0-9]+]], :upper8_15:.L.str
; CHECK-T1-NEXT: lsls [[STRLIT]], [[STRLIT]], #8
; CHECK-T1-NEXT: adds [[STRLIT]], :upper0_7:.L.str
; CHECK-T1-NEXT: lsls [[STRLIT]], [[STRLIT]], #8
; CHECK-T1-NEXT: adds [[STRLIT]], :lower8_15:.L.str
; CHECK-T1-NEXT: lsls [[STRLIT]], [[STRLIT]], #8
; CHECK-T1-NEXT: adds [[STRLIT]], :lower0_7:.L.str
ret ptr @.str
}
@external_global = external global i32
define i32 @test_external_global() {
entry:
; CHECK-LABEL: external_global:
; CHECK: movw [[EXTGLOB:r[0-9]+]], :lower16:external_global
; CHECK-NEXT: movt [[EXTGLOB]], :upper16:external_global
; CHECK-T1-LABEL: external_global:
; CHECK-T1: movs [[EXTGLOB:r[0-9]+]], :upper8_15:external_global
; CHECK-T1-NEXT: lsls [[EXTGLOB]], [[EXTGLOB]], #8
; CHECK-T1-NEXT: adds [[EXTGLOB]], :upper0_7:external_global
; CHECK-T1-NEXT: lsls [[EXTGLOB]], [[EXTGLOB]], #8
; CHECK-T1-NEXT: adds [[EXTGLOB]], :lower8_15:external_global
; CHECK-T1-NEXT: lsls [[EXTGLOB]], [[EXTGLOB]], #8
; CHECK-T1-NEXT: adds [[EXTGLOB]], :lower0_7:external_global
%v = load i32, ptr @external_global
ret i32 %v
}
define i32 @test_imm() {
entry:
; CHECK-LABEL: test_imm:
; CHECK: movw [[IMMDEST:r[0-9]+]], #13124
; CHECK-NEXT: movt [[IMMDEST]], #4386
; CHECK-NEXT: bx lr
; CHECK-T1-LABEL: test_imm:
; CHECK-T1: movs [[IMMDEST:r[0-9]+]], #17
; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #8
; CHECK-T1-NEXT: adds [[IMMDEST]], #34
; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #8
; CHECK-T1-NEXT: adds [[IMMDEST]], #51
; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #8
; CHECK-T1-NEXT: adds [[IMMDEST]], #68
; CHECK-T1-NEXT: bx lr
ret i32 u0x11223344
}
define i32 @test_imm_high_half() {
entry:
; CHECK-LABEL: test_imm_high_half:
; CHECK-T2BASE: movw [[IMMDEST:r[0-9]+]], #0
; CHECK-T2: movs [[IMMDEST:r[0-9]+]], #0
; CHECK-NEXT: movt [[IMMDEST]], #4386
; CHECK-NEXT: bx lr
; CHECK-T1-LABEL: test_imm_high_half:
; CHECK-T1: movs [[IMMDEST:r[0-9]+]], #17
; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #8
; CHECK-T1-NEXT: adds [[IMMDEST]], #34
; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #16
; CHECK-T1-NEXT: bx lr
ret i32 u0x11220000
}
define i32 @test_imm_low_half() {
; CHECK-LABEL: test_imm_low_half:
; CHECK: movw [[IMMDEST:r[0-9]+]], #13124
; CHECK-NEXT: bx lr
; CHECK-T1-LABEL: test_imm_low_half:
; CHECK-T1: movs [[IMMDEST]], #51
; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #8
; CHECK-T1-NEXT: adds [[IMMDEST]], #68
; CHECK-T1-NEXT: bx lr
entry:
ret i32 u0x3344
}
define i32 @test_imm_middle_bytes() {
; CHECK-LABEL: test_imm_middle_bytes:
; CHECK: movw [[IMMDEST:r[0-9]+]], #13056
; CHECK-NEXT: movt [[IMMDEST]], #34
; CHECK-NEXT: bx lr
; CHECK-T1-LABEL: test_imm_middle_bytes:
; CHECK-T1: movs [[IMMDEST]], #34
; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #8
; CHECK-T1-NEXT: adds [[IMMDEST]], #51
; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #8
; CHECK-T1-NEXT: bx lr
ret i32 u0x223300
}
; This struct is sized so that the byval call does an inline memcpy of
; 0x10001 bytes.
%struct.struct_t = type { [65553 x i8] }
@byval_arg = global %struct.struct_t zeroinitializer
declare void @byval_fn(ptr byval(%struct.struct_t))
define void @test_byval_call() {
entry:
; CHECK-LABEL: test_byval_call:
; CHECK-T2BASE: movw [[BYVAL_CPYSIZE:r[0-9]+]], #1
; CHECK-T2: movs [[BYVAL_CPYSIZE:r[0-9]+]], #1
; CHECK: movt [[BYVAL_CPYSIZE]], #1
; CHECK-T1-LABEL: test_byval_call:
; CHECK-T1: movs [[BYVAL_CPYSIZE:r[0-9]+]], #1
; CHECK-T1: lsls [[BYVAL_CPYSIZE]], [[BYVAL_CPYSIZE]], #16
; CHECK-T1: adds [[BYVAL_CPYSIZE]], #1
call void @byval_fn(ptr byval(%struct.struct_t) @byval_arg)
ret void
}
|
