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
|
; Test the use of TM and TMY.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
@g = global i32 0
; Check a simple branching use of TM.
define void @f1(i8 *%src) {
; CHECK-LABEL: f1:
; CHECK: tm 0(%r2), 1
; CHECK: je {{\.L.*}}
; CHECK: br %r14
entry:
%byte = load i8 , i8 *%src
%and = and i8 %byte, 1
%cmp = icmp eq i8 %and, 0
br i1 %cmp, label %exit, label %store
store:
store i32 1, i32 *@g
br label %exit
exit:
ret void
}
; Check that we do not fold across an aliasing store.
define void @f2(i8 *%src) {
; CHECK-LABEL: f2:
; CHECK: llc [[REG:%r[0-5]]], 0(%r2)
; CHECK: mvi 0(%r2), 0
; CHECK: tmll [[REG]], 1
; CHECK: je {{\.L.*}}
; CHECK: br %r14
entry:
%byte = load i8 , i8 *%src
store i8 0, i8 *%src
%and = and i8 %byte, 1
%cmp = icmp eq i8 %and, 0
br i1 %cmp, label %exit, label %store
store:
store i32 1, i32 *@g
br label %exit
exit:
ret void
}
; Check a simple select-based use of TM.
define double @f3(i8 *%src, double %a, double %b) {
; CHECK-LABEL: f3:
; CHECK: tm 0(%r2), 1
; CHECK: je {{\.L.*}}
; CHECK: br %r14
%byte = load i8 , i8 *%src
%and = and i8 %byte, 1
%cmp = icmp eq i8 %and, 0
%res = select i1 %cmp, double %b, double %a
ret double %res
}
; Check that we do not fold across an aliasing store.
define double @f4(i8 *%src, double %a, double %b) {
; CHECK-LABEL: f4:
; CHECK: tm 0(%r2), 1
; CHECK: je {{\.L.*}}
; CHECK: mvi 0(%r2), 0
; CHECK: br %r14
%byte = load i8 , i8 *%src
%and = and i8 %byte, 1
%cmp = icmp eq i8 %and, 0
%res = select i1 %cmp, double %b, double %a
store i8 0, i8 *%src
ret double %res
}
; Check an inequality check.
define double @f5(i8 *%src, double %a, double %b) {
; CHECK-LABEL: f5:
; CHECK: tm 0(%r2), 1
; CHECK: jne {{\.L.*}}
; CHECK: br %r14
%byte = load i8 , i8 *%src
%and = and i8 %byte, 1
%cmp = icmp ne i8 %and, 0
%res = select i1 %cmp, double %b, double %a
ret double %res
}
; Check that we can also use TM for equality comparisons with the mask.
define double @f6(i8 *%src, double %a, double %b) {
; CHECK-LABEL: f6:
; CHECK: tm 0(%r2), 254
; CHECK: jo {{\.L.*}}
; CHECK: br %r14
%byte = load i8 , i8 *%src
%and = and i8 %byte, 254
%cmp = icmp eq i8 %and, 254
%res = select i1 %cmp, double %b, double %a
ret double %res
}
; Check inequality comparisons with the mask.
define double @f7(i8 *%src, double %a, double %b) {
; CHECK-LABEL: f7:
; CHECK: tm 0(%r2), 254
; CHECK: jno {{\.L.*}}
; CHECK: br %r14
%byte = load i8 , i8 *%src
%and = and i8 %byte, 254
%cmp = icmp ne i8 %and, 254
%res = select i1 %cmp, double %b, double %a
ret double %res
}
; Check that we do not use the memory TM instruction when CC is being tested
; for 2.
define double @f8(i8 *%src, double %a, double %b) {
; CHECK-LABEL: f8:
; CHECK: llc [[REG:%r[0-5]]], 0(%r2)
; CHECK: tmll [[REG]], 3
; CHECK: jh {{\.L.*}}
; CHECK: br %r14
%byte = load i8 , i8 *%src
%and = and i8 %byte, 3
%cmp = icmp eq i8 %and, 2
%res = select i1 %cmp, double %b, double %a
ret double %res
}
; ...likewise 1.
define double @f9(i8 *%src, double %a, double %b) {
; CHECK-LABEL: f9:
; CHECK: llc [[REG:%r[0-5]]], 0(%r2)
; CHECK: tmll [[REG]], 3
; CHECK: jl {{\.L.*}}
; CHECK: br %r14
%byte = load i8 , i8 *%src
%and = and i8 %byte, 3
%cmp = icmp eq i8 %and, 1
%res = select i1 %cmp, double %b, double %a
ret double %res
}
; Check the high end of the TM range.
define double @f10(i8 *%src, double %a, double %b) {
; CHECK-LABEL: f10:
; CHECK: tm 4095(%r2), 1
; CHECK: je {{\.L.*}}
; CHECK: br %r14
%ptr = getelementptr i8, i8 *%src, i64 4095
%byte = load i8 , i8 *%ptr
%and = and i8 %byte, 1
%cmp = icmp eq i8 %and, 0
%res = select i1 %cmp, double %b, double %a
ret double %res
}
; Check the low end of the positive TMY range.
define double @f11(i8 *%src, double %a, double %b) {
; CHECK-LABEL: f11:
; CHECK: tmy 4096(%r2), 1
; CHECK: je {{\.L.*}}
; CHECK: br %r14
%ptr = getelementptr i8, i8 *%src, i64 4096
%byte = load i8 , i8 *%ptr
%and = and i8 %byte, 1
%cmp = icmp eq i8 %and, 0
%res = select i1 %cmp, double %b, double %a
ret double %res
}
; Check the high end of the TMY range.
define double @f12(i8 *%src, double %a, double %b) {
; CHECK-LABEL: f12:
; CHECK: tmy 524287(%r2), 1
; CHECK: je {{\.L.*}}
; CHECK: br %r14
%ptr = getelementptr i8, i8 *%src, i64 524287
%byte = load i8 , i8 *%ptr
%and = and i8 %byte, 1
%cmp = icmp eq i8 %and, 0
%res = select i1 %cmp, double %b, double %a
ret double %res
}
; Check the next byte up, which needs separate address logic.
define double @f13(i8 *%src, double %a, double %b) {
; CHECK-LABEL: f13:
; CHECK: agfi %r2, 524288
; CHECK: tm 0(%r2), 1
; CHECK: je {{\.L.*}}
; CHECK: br %r14
%ptr = getelementptr i8, i8 *%src, i64 524288
%byte = load i8 , i8 *%ptr
%and = and i8 %byte, 1
%cmp = icmp eq i8 %and, 0
%res = select i1 %cmp, double %b, double %a
ret double %res
}
; Check the low end of the TMY range.
define double @f14(i8 *%src, double %a, double %b) {
; CHECK-LABEL: f14:
; CHECK: tmy -524288(%r2), 1
; CHECK: je {{\.L.*}}
; CHECK: br %r14
%ptr = getelementptr i8, i8 *%src, i64 -524288
%byte = load i8 , i8 *%ptr
%and = and i8 %byte, 1
%cmp = icmp eq i8 %and, 0
%res = select i1 %cmp, double %b, double %a
ret double %res
}
; Check the next byte down, which needs separate address logic.
define double @f15(i8 *%src, double %a, double %b) {
; CHECK-LABEL: f15:
; CHECK: agfi %r2, -524289
; CHECK: tm 0(%r2), 1
; CHECK: je {{\.L.*}}
; CHECK: br %r14
%ptr = getelementptr i8, i8 *%src, i64 -524289
%byte = load i8 , i8 *%ptr
%and = and i8 %byte, 1
%cmp = icmp eq i8 %and, 0
%res = select i1 %cmp, double %b, double %a
ret double %res
}
; Check that TM(Y) does not allow an index
define double @f16(i8 *%src, i64 %index, double %a, double %b) {
; CHECK-LABEL: f16:
; CHECK: tm 0({{%r[1-5]}}), 1
; CHECK: je {{\.L.*}}
; CHECK: br %r14
%ptr = getelementptr i8, i8 *%src, i64 %index
%byte = load i8 , i8 *%ptr
%and = and i8 %byte, 1
%cmp = icmp eq i8 %and, 0
%res = select i1 %cmp, double %b, double %a
ret double %res
}
|
