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
|
# RUN: llc -mtriple arm-- -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -mtriple thumb-- -mattr=+v6t2 -run-pass=legalizer %s -o - | FileCheck %s
--- |
define void @test_brcond() { ret void }
define void @test_phi_s32() { ret void }
define void @test_phi_p0() { ret void }
define void @test_phi_s8() { ret void }
...
---
name: test_brcond
# CHECK-LABEL: name: test_brcond
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
body: |
bb.0:
successors: %bb.1(0x40000000), %bb.2(0x40000000)
liveins: $r0, $r1
%0(s32) = COPY $r0
%1(s32) = COPY $r1
%2(s1) = G_ICMP intpred(sgt), %0(s32), %1
G_BRCOND %2(s1), %bb.1
; G_BRCOND with s1 is legal, so we should find it unchanged in the output
; CHECK: G_BRCOND {{%[0-9]+}}(s1), %bb.1
G_BR %bb.2
bb.1:
$r0 = COPY %1(s32)
BX_RET 14, $noreg, implicit $r0
bb.2:
$r0 = COPY %0(s32)
BX_RET 14, $noreg, implicit $r0
...
---
name: test_phi_s32
# CHECK-LABEL: name: test_phi_s32
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
- { id: 3, class: _ }
- { id: 4, class: _ }
body: |
bb.0:
liveins: $r0, $r1, $r2
%0(s32) = COPY $r0
%1(s1) = G_TRUNC %0(s32)
%2(s32) = COPY $r1
%3(s32) = COPY $r2
G_BRCOND %1(s1), %bb.1
G_BR %bb.2
bb.1:
G_BR %bb.2
bb.2:
%4(s32) = G_PHI %2(s32), %bb.0, %3(s32), %bb.1
; G_PHI with s32 is legal, so we should find it unchanged in the output
; CHECK: G_PHI {{%[0-9]+}}(s32), %bb.0, {{%[0-9]+}}(s32), %bb.1
$r0 = COPY %4(s32)
BX_RET 14, $noreg, implicit $r0
...
---
name: test_phi_p0
# CHECK-LABEL: name: test_phi_p0
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
- { id: 3, class: _ }
- { id: 4, class: _ }
body: |
bb.0:
liveins: $r0, $r1, $r2
%0(s32) = COPY $r0
%1(s1) = G_TRUNC %0(s32)
%2(p0) = COPY $r1
%3(p0) = COPY $r2
G_BRCOND %1(s1), %bb.1
G_BR %bb.2
bb.1:
G_BR %bb.2
bb.2:
%4(p0) = G_PHI %2(p0), %bb.0, %3(p0), %bb.1
; G_PHI with p0 is legal, so we should find it unchanged in the output
; CHECK: G_PHI {{%[0-9]+}}(p0), %bb.0, {{%[0-9]+}}(p0), %bb.1
$r0 = COPY %4(p0)
BX_RET 14, $noreg, implicit $r0
...
---
name: test_phi_s8
# CHECK-LABEL: name: test_phi_s8
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
- { id: 3, class: _ }
- { id: 4, class: _ }
- { id: 5, class: _ }
- { id: 6, class: _ }
- { id: 7, class: _ }
body: |
bb.0:
liveins: $r0, $r1, $r2
%0(s32) = COPY $r0
%1(s1) = G_TRUNC %0(s32)
%2(s32) = COPY $r1
%3(s8) = G_TRUNC %2(s32)
; CHECK: [[R1:%[0-9]+]]:_(s32) = COPY $r1
%4(s32) = COPY $r2
%5(s8) = G_TRUNC %4(s32)
; CHECK: [[R2:%[0-9]+]]:_(s32) = COPY $r2
G_BRCOND %1(s1), %bb.1
G_BR %bb.2
bb.1:
G_BR %bb.2
bb.2:
%6(s8) = G_PHI %3(s8), %bb.0, %5(s8), %bb.1
; G_PHI with s8 should widen, and all the truncs and exts should be combined
; away into a bunch of redundant copies
; CHECK: [[V:%[0-9]+]]:_(s32) = G_PHI [[R1]](s32), %bb.0, [[R2]](s32), %bb.1
%7(s32) = G_ANYEXT %6(s8)
$r0 = COPY %7(s32)
; CHECK: $r0 = COPY [[V]](s32)
BX_RET 14, $noreg, implicit $r0
...
|
