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
| ; Test 32-bit addition in which the second operand is constant and in which
; three-operand forms are available.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
declare i32 @foo()
; Check addition of 1.
define zeroext i1 @f1(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f1:
; CHECK: alhsik [[REG1:%r[0-5]]], %r3, 1
; CHECK-DAG: st [[REG1]], 0(%r4)
; CHECK-DAG: ipm [[REG2:%r[0-5]]]
; CHECK-DAG: risbg %r2, [[REG2]], 63, 191, 35
; CHECK: br %r14
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %a, i32 1)
%val = extractvalue {i32, i1} %t, 0
%obit = extractvalue {i32, i1} %t, 1
store i32 %val, i32 *%res
ret i1 %obit
}
; Check the high end of the ALHSIK range.
define zeroext i1 @f2(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f2:
; CHECK: alhsik [[REG1:%r[0-5]]], %r3, 32767
; CHECK-DAG: st [[REG1]], 0(%r4)
; CHECK-DAG: ipm [[REG2:%r[0-5]]]
; CHECK-DAG: risbg %r2, [[REG2]], 63, 191, 35
; CHECK: br %r14
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %a, i32 32767)
%val = extractvalue {i32, i1} %t, 0
%obit = extractvalue {i32, i1} %t, 1
store i32 %val, i32 *%res
ret i1 %obit
}
; Check the next value up, which must use ALFI instead.
define zeroext i1 @f3(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f3:
; CHECK: alfi %r3, 32768
; CHECK-DAG: st %r3, 0(%r4)
; CHECK-DAG: ipm [[REG2:%r[0-5]]]
; CHECK-DAG: risbg %r2, [[REG2]], 63, 191, 35
; CHECK: br %r14
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %a, i32 32768)
%val = extractvalue {i32, i1} %t, 0
%obit = extractvalue {i32, i1} %t, 1
store i32 %val, i32 *%res
ret i1 %obit
}
; Check the high end of the negative ALHSIK range.
define zeroext i1 @f4(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f4:
; CHECK: alhsik [[REG1:%r[0-5]]], %r3, -1
; CHECK-DAG: st [[REG1]], 0(%r4)
; CHECK-DAG: ipm [[REG2:%r[0-5]]]
; CHECK-DAG: risbg %r2, [[REG2]], 63, 191, 35
; CHECK: br %r14
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %a, i32 -1)
%val = extractvalue {i32, i1} %t, 0
%obit = extractvalue {i32, i1} %t, 1
store i32 %val, i32 *%res
ret i1 %obit
}
; Check the low end of the ALHSIK range.
define zeroext i1 @f5(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f5:
; CHECK: alhsik [[REG1:%r[0-5]]], %r3, -32768
; CHECK-DAG: st [[REG1]], 0(%r4)
; CHECK-DAG: ipm [[REG2:%r[0-5]]]
; CHECK-DAG: risbg %r2, [[REG2]], 63, 191, 35
; CHECK: br %r14
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %a, i32 -32768)
%val = extractvalue {i32, i1} %t, 0
%obit = extractvalue {i32, i1} %t, 1
store i32 %val, i32 *%res
ret i1 %obit
}
; Check the next value down, which must use ALFI instead.
define zeroext i1 @f6(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f6:
; CHECK: alfi %r3, 4294934527
; CHECK-DAG: st %r3, 0(%r4)
; CHECK-DAG: ipm [[REG2:%r[0-5]]]
; CHECK-DAG: risbg %r2, [[REG2]], 63, 191, 35
; CHECK: br %r14
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %a, i32 -32769)
%val = extractvalue {i32, i1} %t, 0
%obit = extractvalue {i32, i1} %t, 1
store i32 %val, i32 *%res
ret i1 %obit
}
; Check using the overflow result for a branch.
define void @f7(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f7:
; CHECK: alhsik [[REG1:%r[0-5]]], %r3, 1
; CHECK-DAG: st [[REG1]], 0(%r4)
; CHECK: jgnle foo@PLT
; CHECK: br %r14
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %a, i32 1)
%val = extractvalue {i32, i1} %t, 0
%obit = extractvalue {i32, i1} %t, 1
store i32 %val, i32 *%res
br i1 %obit, label %call, label %exit
call:
tail call i32 @foo()
br label %exit
exit:
ret void
}
; ... and the same with the inverted direction.
define void @f8(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f8:
; CHECK: alhsik [[REG1:%r[0-5]]], %r3, 1
; CHECK-DAG: st [[REG1]], 0(%r4)
; CHECK: jgle foo@PLT
; CHECK: br %r14
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %a, i32 1)
%val = extractvalue {i32, i1} %t, 0
%obit = extractvalue {i32, i1} %t, 1
store i32 %val, i32 *%res
br i1 %obit, label %exit, label %call
call:
tail call i32 @foo()
br label %exit
exit:
ret void
}
declare {i32, i1} @llvm.uadd.with.overflow.i32(i32, i32) nounwind readnone
|