aboutsummaryrefslogtreecommitdiffstats
path: root/test/CodeGen/SystemZ/int-const-03.ll
blob: af1cef2c138ada31b26d38e0d66508f0291dbe18 (plain)
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
; Test moves of integers to byte memory locations.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s

; Check the low end of the unsigned range.
define void @f1(i8 *%ptr) {
; CHECK-LABEL: f1:
; CHECK: mvi 0(%r2), 0
; CHECK: br %r14
  store i8 0, i8 *%ptr
  ret void
}

; Check the high end of the signed range.
define void @f2(i8 *%ptr) {
; CHECK-LABEL: f2:
; CHECK: mvi 0(%r2), 127
; CHECK: br %r14
  store i8 127, i8 *%ptr
  ret void
}

; Check the next value up.
define void @f3(i8 *%ptr) {
; CHECK-LABEL: f3:
; CHECK: mvi 0(%r2), 128
; CHECK: br %r14
  store i8 -128, i8 *%ptr
  ret void
}

; Check the high end of the unsigned range.
define void @f4(i8 *%ptr) {
; CHECK-LABEL: f4:
; CHECK: mvi 0(%r2), 255
; CHECK: br %r14
  store i8 255, i8 *%ptr
  ret void
}

; Check -1.
define void @f5(i8 *%ptr) {
; CHECK-LABEL: f5:
; CHECK: mvi 0(%r2), 255
; CHECK: br %r14
  store i8 -1, i8 *%ptr
  ret void
}

; Check the low end of the signed range.
define void @f6(i8 *%ptr) {
; CHECK-LABEL: f6:
; CHECK: mvi 0(%r2), 128
; CHECK: br %r14
  store i8 -128, i8 *%ptr
  ret void
}

; Check the next value down.
define void @f7(i8 *%ptr) {
; CHECK-LABEL: f7:
; CHECK: mvi 0(%r2), 127
; CHECK: br %r14
  store i8 -129, i8 *%ptr
  ret void
}

; Check the high end of the MVI range.
define void @f8(i8 *%src) {
; CHECK-LABEL: f8:
; CHECK: mvi 4095(%r2), 42
; CHECK: br %r14
  %ptr = getelementptr i8 *%src, i64 4095
  store i8 42, i8 *%ptr
  ret void
}

; Check the next byte up, which should use MVIY instead of MVI.
define void @f9(i8 *%src) {
; CHECK-LABEL: f9:
; CHECK: mviy 4096(%r2), 42
; CHECK: br %r14
  %ptr = getelementptr i8 *%src, i64 4096
  store i8 42, i8 *%ptr
  ret void
}

; Check the high end of the MVIY range.
define void @f10(i8 *%src) {
; CHECK-LABEL: f10:
; CHECK: mviy 524287(%r2), 42
; CHECK: br %r14
  %ptr = getelementptr i8 *%src, i64 524287
  store i8 42, i8 *%ptr
  ret void
}

; Check the next byte up, which needs separate address logic.
; Other sequences besides this one would be OK.
define void @f11(i8 *%src) {
; CHECK-LABEL: f11:
; CHECK: agfi %r2, 524288
; CHECK: mvi 0(%r2), 42
; CHECK: br %r14
  %ptr = getelementptr i8 *%src, i64 524288
  store i8 42, i8 *%ptr
  ret void
}

; Check the high end of the negative MVIY range.
define void @f12(i8 *%src) {
; CHECK-LABEL: f12:
; CHECK: mviy -1(%r2), 42
; CHECK: br %r14
  %ptr = getelementptr i8 *%src, i64 -1
  store i8 42, i8 *%ptr
  ret void
}

; Check the low end of the MVIY range.
define void @f13(i8 *%src) {
; CHECK-LABEL: f13:
; CHECK: mviy -524288(%r2), 42
; CHECK: br %r14
  %ptr = getelementptr i8 *%src, i64 -524288
  store i8 42, i8 *%ptr
  ret void
}

; Check the next byte down, which needs separate address logic.
; Other sequences besides this one would be OK.
define void @f14(i8 *%src) {
; CHECK-LABEL: f14:
; CHECK: agfi %r2, -524289
; CHECK: mvi 0(%r2), 42
; CHECK: br %r14
  %ptr = getelementptr i8 *%src, i64 -524289
  store i8 42, i8 *%ptr
  ret void
}

; Check that MVI does not allow an index.  We prefer STC in that case.
define void @f15(i64 %src, i64 %index) {
; CHECK-LABEL: f15:
; CHECK: lhi [[TMP:%r[0-5]]], 42
; CHECK: stc [[TMP]], 4095({{%r2,%r3|%r3,%r2}}
; CHECK: br %r14
  %add1 = add i64 %src, %index
  %add2 = add i64 %add1, 4095
  %ptr = inttoptr i64 %add2 to i8 *
  store i8 42, i8 *%ptr
  ret void
}

; Check that MVIY does not allow an index.  We prefer STCY in that case.
define void @f16(i64 %src, i64 %index) {
; CHECK-LABEL: f16:
; CHECK: lhi [[TMP:%r[0-5]]], 42
; CHECK: stcy [[TMP]], 4096({{%r2,%r3|%r3,%r2}}
; CHECK: br %r14
  %add1 = add i64 %src, %index
  %add2 = add i64 %add1, 4096
  %ptr = inttoptr i64 %add2 to i8 *
  store i8 42, i8 *%ptr
  ret void
}