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
|
; Test 32-bit compare and swap.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Check the low end of the CS range.
define i32 @f1(i32 %cmp, i32 %swap, i32 *%src) {
; CHECK-LABEL: f1:
; CHECK: cs %r2, %r3, 0(%r4)
; CHECK: br %r14
%pair = cmpxchg i32 *%src, i32 %cmp, i32 %swap seq_cst seq_cst
%val = extractvalue { i32, i1 } %pair, 0
ret i32 %val
}
; Check the high end of the aligned CS range.
define i32 @f2(i32 %cmp, i32 %swap, i32 *%src) {
; CHECK-LABEL: f2:
; CHECK: cs %r2, %r3, 4092(%r4)
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%src, i64 1023
%pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
%val = extractvalue { i32, i1 } %pair, 0
ret i32 %val
}
; Check the next word up, which should use CSY instead of CS.
define i32 @f3(i32 %cmp, i32 %swap, i32 *%src) {
; CHECK-LABEL: f3:
; CHECK: csy %r2, %r3, 4096(%r4)
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%src, i64 1024
%pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
%val = extractvalue { i32, i1 } %pair, 0
ret i32 %val
}
; Check the high end of the aligned CSY range.
define i32 @f4(i32 %cmp, i32 %swap, i32 *%src) {
; CHECK-LABEL: f4:
; CHECK: csy %r2, %r3, 524284(%r4)
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%src, i64 131071
%pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
%val = extractvalue { i32, i1 } %pair, 0
ret i32 %val
}
; Check the next word up, which needs separate address logic.
; Other sequences besides this one would be OK.
define i32 @f5(i32 %cmp, i32 %swap, i32 *%src) {
; CHECK-LABEL: f5:
; CHECK: agfi %r4, 524288
; CHECK: cs %r2, %r3, 0(%r4)
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%src, i64 131072
%pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
%val = extractvalue { i32, i1 } %pair, 0
ret i32 %val
}
; Check the high end of the negative aligned CSY range.
define i32 @f6(i32 %cmp, i32 %swap, i32 *%src) {
; CHECK-LABEL: f6:
; CHECK: csy %r2, %r3, -4(%r4)
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%src, i64 -1
%pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
%val = extractvalue { i32, i1 } %pair, 0
ret i32 %val
}
; Check the low end of the CSY range.
define i32 @f7(i32 %cmp, i32 %swap, i32 *%src) {
; CHECK-LABEL: f7:
; CHECK: csy %r2, %r3, -524288(%r4)
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%src, i64 -131072
%pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
%val = extractvalue { i32, i1 } %pair, 0
ret i32 %val
}
; Check the next word down, which needs separate address logic.
; Other sequences besides this one would be OK.
define i32 @f8(i32 %cmp, i32 %swap, i32 *%src) {
; CHECK-LABEL: f8:
; CHECK: agfi %r4, -524292
; CHECK: cs %r2, %r3, 0(%r4)
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%src, i64 -131073
%pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
%val = extractvalue { i32, i1 } %pair, 0
ret i32 %val
}
; Check that CS does not allow an index.
define i32 @f9(i32 %cmp, i32 %swap, i64 %src, i64 %index) {
; CHECK-LABEL: f9:
; CHECK: agr %r4, %r5
; CHECK: cs %r2, %r3, 0(%r4)
; CHECK: br %r14
%add1 = add i64 %src, %index
%ptr = inttoptr i64 %add1 to i32 *
%pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
%val = extractvalue { i32, i1 } %pair, 0
ret i32 %val
}
; Check that CSY does not allow an index.
define i32 @f10(i32 %cmp, i32 %swap, i64 %src, i64 %index) {
; CHECK-LABEL: f10:
; CHECK: agr %r4, %r5
; CHECK: csy %r2, %r3, 4096(%r4)
; CHECK: br %r14
%add1 = add i64 %src, %index
%add2 = add i64 %add1, 4096
%ptr = inttoptr i64 %add2 to i32 *
%pair = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst seq_cst
%val = extractvalue { i32, i1 } %pair, 0
ret i32 %val
}
; Check that a constant %cmp value is loaded into a register first.
define i32 @f11(i32 %dummy, i32 %swap, i32 *%ptr) {
; CHECK-LABEL: f11:
; CHECK: lhi %r2, 1001
; CHECK: cs %r2, %r3, 0(%r4)
; CHECK: br %r14
%pair = cmpxchg i32 *%ptr, i32 1001, i32 %swap seq_cst seq_cst
%val = extractvalue { i32, i1 } %pair, 0
ret i32 %val
}
; Check that a constant %swap value is loaded into a register first.
define i32 @f12(i32 %cmp, i32 *%ptr) {
; CHECK-LABEL: f12:
; CHECK: lhi [[SWAP:%r[0-9]+]], 1002
; CHECK: cs %r2, [[SWAP]], 0(%r3)
; CHECK: br %r14
%pair = cmpxchg i32 *%ptr, i32 %cmp, i32 1002 seq_cst seq_cst
%val = extractvalue { i32, i1 } %pair, 0
ret i32 %val
}
|
