int-ssub-06.ll
7.35 KB
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
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
; Test 32-bit subtraction in which the second operand is constant.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
declare i32 @foo()
; Check subtractions of 1.
define zeroext i1 @f1(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f1:
; CHECK: ahi %r3, -1
; CHECK-DAG: st %r3, 0(%r4)
; CHECK-DAG: ipm [[REG:%r[0-5]]]
; CHECK-DAG: afi [[REG]], 1342177280
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 33
; CHECK: br %r14
%t = call {i32, i1} @llvm.ssub.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 AHI range.
define zeroext i1 @f2(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f2:
; CHECK: ahi %r3, -32768
; CHECK-DAG: st %r3, 0(%r4)
; CHECK-DAG: ipm [[REG:%r[0-5]]]
; CHECK-DAG: afi [[REG]], 1342177280
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 33
; CHECK: br %r14
%t = call {i32, i1} @llvm.ssub.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 up, which must use AFI instead.
define zeroext i1 @f3(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f3:
; CHECK: afi %r3, -32769
; CHECK-DAG: st %r3, 0(%r4)
; CHECK-DAG: ipm [[REG:%r[0-5]]]
; CHECK-DAG: afi [[REG]], 1342177280
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 33
; CHECK: br %r14
%t = call {i32, i1} @llvm.ssub.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 the high end of the signed 32-bit range.
define zeroext i1 @f4(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f4:
; CHECK: afi %r3, -2147483647
; CHECK-DAG: st %r3, 0(%r4)
; CHECK-DAG: ipm [[REG:%r[0-5]]]
; CHECK-DAG: afi [[REG]], 1342177280
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 33
; CHECK: br %r14
%t = call {i32, i1} @llvm.ssub.with.overflow.i32(i32 %a, i32 2147483647)
%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 is treated as a negative value
; and must use a register.
define zeroext i1 @f5(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f5:
; CHECK: llilh [[REG1:%r[0-5]]], 32768
; CHECK: sr %r3, [[REG1]]
; CHECK-DAG: st %r3, 0(%r4)
; CHECK-DAG: ipm [[REG:%r[0-5]]]
; CHECK-DAG: afi [[REG]], 1342177280
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 33
; CHECK: br %r14
%t = call {i32, i1} @llvm.ssub.with.overflow.i32(i32 %a, i32 2147483648)
%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 is treated as a negative value,
; and can use AFI again.
define zeroext i1 @f6(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f6:
; CHECK: afi %r3, 2147483647
; CHECK-DAG: st %r3, 0(%r4)
; CHECK-DAG: ipm [[REG:%r[0-5]]]
; CHECK-DAG: afi [[REG]], 1342177280
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 33
; CHECK: br %r14
%t = call {i32, i1} @llvm.ssub.with.overflow.i32(i32 %a, i32 2147483649)
%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 AHI range.
define zeroext i1 @f7(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f7:
; CHECK: ahi %r3, 1
; CHECK-DAG: st %r3, 0(%r4)
; CHECK-DAG: ipm [[REG:%r[0-5]]]
; CHECK-DAG: afi [[REG]], 1342177280
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 33
; CHECK: br %r14
%t = call {i32, i1} @llvm.ssub.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 AHI range.
define zeroext i1 @f8(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f8:
; CHECK: ahi %r3, 32767
; CHECK-DAG: st %r3, 0(%r4)
; CHECK-DAG: ipm [[REG:%r[0-5]]]
; CHECK-DAG: afi [[REG]], 1342177280
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 33
; CHECK: br %r14
%t = call {i32, i1} @llvm.ssub.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 down, which must use AFI instead.
define zeroext i1 @f9(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f9:
; CHECK: afi %r3, 32768
; CHECK-DAG: st %r3, 0(%r4)
; CHECK-DAG: ipm [[REG:%r[0-5]]]
; CHECK-DAG: afi [[REG]], 1342177280
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 33
; CHECK: br %r14
%t = call {i32, i1} @llvm.ssub.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 low end of the signed 32-bit range.
define zeroext i1 @f10(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f10:
; CHECK: afi %r3, 2147483647
; CHECK-DAG: st %r3, 0(%r4)
; CHECK-DAG: ipm [[REG:%r[0-5]]]
; CHECK-DAG: afi [[REG]], 1342177280
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 33
; CHECK: br %r14
%t = call {i32, i1} @llvm.ssub.with.overflow.i32(i32 %a, i32 -2147483647)
%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 a register.
define zeroext i1 @f11(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f11:
; CHECK: llilh [[REG1:%r[0-5]]], 32768
; CHECK: sr %r3, [[REG1]]
; CHECK-DAG: st %r3, 0(%r4)
; CHECK-DAG: ipm [[REG:%r[0-5]]]
; CHECK-DAG: afi [[REG]], 1342177280
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 33
; CHECK: br %r14
%t = call {i32, i1} @llvm.ssub.with.overflow.i32(i32 %a, i32 -2147483648)
%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 is treated as a positive value.
define zeroext i1 @f12(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f12:
; CHECK: afi %r3, -2147483647
; CHECK-DAG: st %r3, 0(%r4)
; CHECK-DAG: ipm [[REG:%r[0-5]]]
; CHECK-DAG: afi [[REG]], 1342177280
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 33
; CHECK: br %r14
%t = call {i32, i1} @llvm.ssub.with.overflow.i32(i32 %a, i32 -2147483649)
%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 @f13(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f13:
; CHECK: ahi %r3, -1
; CHECK: st %r3, 0(%r4)
; CHECK: {{jgo foo@PLT|bnor %r14}}
; CHECK: {{br %r14|jg foo@PLT}}
%t = call {i32, i1} @llvm.ssub.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 @f14(i32 %dummy, i32 %a, i32 *%res) {
; CHECK-LABEL: f14:
; CHECK: ahi %r3, -1
; CHECK: st %r3, 0(%r4)
; CHECK: {{jgno foo@PLT|bor %r14}}
; CHECK: {{br %r14|jg foo@PLT}}
%t = call {i32, i1} @llvm.ssub.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.ssub.with.overflow.i32(i32, i32) nounwind readnone