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
249
250
251
252
253
254
255
256
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instsimplify -S | FileCheck %s
define float @select_fcmp_fsub_oeq(float %x) {
; CHECK-LABEL: @select_fcmp_fsub_oeq(
; CHECK-NEXT: ret float 0.000000e+00
;
%fcmp = fcmp oeq float %x, 2.0
%fadd = fsub float %x, 2.0
%sel = select i1 %fcmp, float %fadd, float 0.0
ret float %sel
}
define float @select_fcmp_fsub_oeq_zero(float %x) {
; CHECK-LABEL: @select_fcmp_fsub_oeq_zero(
; CHECK-NEXT: [[FCMP:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00
; CHECK-NEXT: [[FADD:%.*]] = fsub float [[X]], 2.000000e+00
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[FCMP]], float [[FADD]], float 2.000000e+00
; CHECK-NEXT: ret float [[SEL]]
;
%fcmp = fcmp oeq float %x, 0.0
%fadd = fsub float %x, 2.0
%sel = select i1 %fcmp, float %fadd, float 2.0
ret float %sel
}
define float @select_fcmp_fsub_ueq(float %x) {
; CHECK-LABEL: @select_fcmp_fsub_ueq(
; CHECK-NEXT: [[FCMP:%.*]] = fcmp ueq float [[X:%.*]], 2.000000e+00
; CHECK-NEXT: [[FADD:%.*]] = fsub float [[X]], 2.000000e+00
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[FCMP]], float [[FADD]], float 0.000000e+00
; CHECK-NEXT: ret float [[SEL]]
;
%fcmp = fcmp ueq float %x, 2.0
%fadd = fsub float %x, 2.0
%sel = select i1 %fcmp, float %fadd, float 0.0
ret float %sel
}
define float @select_fcmp_fsub_ueq_nnan(float %x) {
; CHECK-LABEL: @select_fcmp_fsub_ueq_nnan(
; CHECK-NEXT: ret float 0.000000e+00
;
%fcmp = fcmp nnan ueq float %x, 2.0
%fadd = fsub float %x, 2.0
%sel = select i1 %fcmp, float %fadd, float 0.0
ret float %sel
}
define float @select_fcmp_fsub_une(float %x) {
; CHECK-LABEL: @select_fcmp_fsub_une(
; CHECK-NEXT: ret float 0.000000e+00
;
%fcmp = fcmp une float %x, 2.0
%fadd = fsub float %x, 2.0
%sel = select i1 %fcmp, float 0.0, float %fadd
ret float %sel
}
define float @select_fcmp_fsub_une_zero(float %x) {
; CHECK-LABEL: @select_fcmp_fsub_une_zero(
; CHECK-NEXT: [[FCMP:%.*]] = fcmp une float [[X:%.*]], 0.000000e+00
; CHECK-NEXT: [[FADD:%.*]] = fsub float [[X]], 2.000000e+00
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[FCMP]], float 2.000000e+00, float [[FADD]]
; CHECK-NEXT: ret float [[SEL]]
;
%fcmp = fcmp une float %x, 0.0
%fadd = fsub float %x, 2.0
%sel = select i1 %fcmp, float 2.0, float %fadd
ret float %sel
}
define float @select_fcmp_fsub_one(float %x) {
; CHECK-LABEL: @select_fcmp_fsub_one(
; CHECK-NEXT: [[FCMP:%.*]] = fcmp one float [[X:%.*]], 2.000000e+00
; CHECK-NEXT: [[FADD:%.*]] = fsub float [[X]], 2.000000e+00
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[FCMP]], float 0.000000e+00, float [[FADD]]
; CHECK-NEXT: ret float [[SEL]]
;
%fcmp = fcmp one float %x, 2.0
%fadd = fsub float %x, 2.0
%sel = select i1 %fcmp, float 0.0, float %fadd
ret float %sel
}
define float @select_fcmp_fsub_one_nnan(float %x) {
; CHECK-LABEL: @select_fcmp_fsub_one_nnan(
; CHECK-NEXT: ret float 0.000000e+00
;
%fcmp = fcmp nnan one float %x, 2.0
%fadd = fsub float %x, 2.0
%sel = select i1 %fcmp, float 0.0, float %fadd
ret float %sel
}
define float @select_fcmp_fadd(float %x) {
; CHECK-LABEL: @select_fcmp_fadd(
; CHECK-NEXT: ret float 4.000000e+00
;
%fcmp = fcmp oeq float %x, 2.0
%fadd = fadd float %x, 2.0
%sel = select i1 %fcmp, float %fadd, float 4.0
ret float %sel
}
define <2 x float> @select_fcmp_fadd_vec(<2 x float> %x) {
; CHECK-LABEL: @select_fcmp_fadd_vec(
; CHECK-NEXT: ret <2 x float> splat (float 4.000000e+00)
;
%fcmp = fcmp oeq <2 x float> %x, <float 2.0, float 2.0>
%fadd = fadd <2 x float> %x, <float 2.0, float 2.0>
%sel = select <2 x i1> %fcmp, <2 x float> %fadd, <2 x float> <float 4.0, float 4.0>
ret <2 x float> %sel
}
; Should not fold, because the fmul by identity may produce a different NaN
; value.
define float @select_fcmp_fmul_nonrefinement(float %x, float %y) {
; CHECK-LABEL: @select_fcmp_fmul_nonrefinement(
; CHECK-NEXT: [[FCMP:%.*]] = fcmp oeq float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[FMUL:%.*]] = fmul float [[Y:%.*]], [[X]]
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[FCMP]], float [[Y]], float [[FMUL]]
; CHECK-NEXT: ret float [[SEL]]
;
%fcmp = fcmp oeq float %x, 1.0
%fmul = fmul float %y, %x
%sel = select i1 %fcmp, float %y, float %fmul
ret float %sel
}
define float @select_fcmp_fmul(float %x) {
; CHECK-LABEL: @select_fcmp_fmul(
; CHECK-NEXT: ret float 4.000000e+00
;
%fcmp = fcmp oeq float %x, 2.0
%fmul = fmul float %x, 2.0
%sel = select i1 %fcmp, float %fmul, float 4.0
ret float %sel
}
define float @select_fcmp_fdiv_nonrefinement(float %x, float %y) {
; CHECK-LABEL: @select_fcmp_fdiv_nonrefinement(
; CHECK-NEXT: [[FCMP:%.*]] = fcmp oeq float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[FDIV:%.*]] = fdiv float [[Y:%.*]], [[X]]
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[FCMP]], float [[Y]], float [[FDIV]]
; CHECK-NEXT: ret float [[SEL]]
;
%fcmp = fcmp oeq float %x, 1.0
%fdiv = fdiv float %y, %x
%sel = select i1 %fcmp, float %y, float %fdiv
ret float %sel
}
define float @select_fcmp_fdiv(float %x) {
; CHECK-LABEL: @select_fcmp_fdiv(
; CHECK-NEXT: ret float 1.000000e+00
;
%fcmp = fcmp oeq float %x, 2.0
%fdiv = fdiv float %x, 2.0
%sel = select i1 %fcmp, float %fdiv, float 1.0
ret float %sel
}
define float @select_fcmp_frem(float %x) {
; CHECK-LABEL: @select_fcmp_frem(
; CHECK-NEXT: ret float 1.000000e+00
;
%fcmp = fcmp oeq float %x, 3.0
%frem = frem float %x, 2.0
%sel = select i1 %fcmp, float %frem, float 1.0
ret float %sel
}
define <2 x float> @select_fcmp_insertelement(<2 x float> %x) {
; CHECK-LABEL: @select_fcmp_insertelement(
; CHECK-NEXT: ret <2 x float> <float 4.000000e+00, float 2.000000e+00>
;
%fcmp = fcmp oeq <2 x float> %x, <float 2.0, float 2.0>
%insert = insertelement <2 x float> %x, float 4.0, i64 0
%sel = select <2 x i1> %fcmp, <2 x float> %insert, <2 x float> <float 4.0, float 2.0>
ret <2 x float> %sel
}
define <4 x float> @select_fcmp_shufflevector_select(<4 x float> %x) {
; CHECK-LABEL: @select_fcmp_shufflevector_select(
; CHECK-NEXT: ret <4 x float> <float poison, float 2.000000e+00, float poison, float 2.000000e+00>
;
%fcmp = fcmp oeq <4 x float> %x, <float 2.0, float 2.0, float 2.0, float 2.0>
%shuffle = shufflevector <4 x float> %x, <4 x float> poison, <4 x i32> <i32 4, i32 1, i32 6, i32 3>
%sel = select <4 x i1> %fcmp, <4 x float> %shuffle, <4 x float> <float poison, float 2.0, float poison, float 2.0>
ret <4 x float> %sel
}
; The hexfloat constant is PI / 2.
define float @select_fcmp_sin_nonrefinement(float %x) {
; CHECK-LABEL: @select_fcmp_sin_nonrefinement(
; CHECK-NEXT: [[FCMP:%.*]] = fcmp oeq float [[X:%.*]], 0x3FF921FB60000000
; CHECK-NEXT: [[SIN:%.*]] = call float @llvm.sin.f32(float [[X]])
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[FCMP]], float 1.000000e+00, float [[SIN]]
; CHECK-NEXT: ret float [[SEL]]
;
%fcmp = fcmp oeq float %x, 0x3FF921FB60000000
%sin = call float @llvm.sin.f32(float %x)
%sel = select i1 %fcmp, float 1.0, float %sin
ret float %sel
}
; The hexfloat constant is PI / 2.
define float @select_fcmp_sin(float %x) {
; CHECK-LABEL: @select_fcmp_sin(
; CHECK-NEXT: ret float 1.000000e+00
;
%fcmp = fcmp oeq float %x, 0x3FF921FB60000000
%sin = call float @llvm.sin.f32(float %x)
%sel = select i1 %fcmp, float %sin, float 1.0
ret float %sel
}
; The hexfloat constant is PI.
define float @select_fcmp_cos_nonrefinement(float %x) {
; CHECK-LABEL: @select_fcmp_cos_nonrefinement(
; CHECK-NEXT: [[FCMP:%.*]] = fcmp oeq float [[X:%.*]], 0x400921FB60000000
; CHECK-NEXT: [[COS:%.*]] = call float @llvm.cos.f32(float [[X]])
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[FCMP]], float -1.000000e+00, float [[COS]]
; CHECK-NEXT: ret float [[SEL]]
;
%fcmp = fcmp oeq float %x, 0x400921FB60000000
%cos = call float @llvm.cos.f32(float %x)
%sel = select i1 %fcmp, float -1.0, float %cos
ret float %sel
}
; The hexfloat constant is PI.
define float @select_fcmp_cos(float %x) {
; CHECK-LABEL: @select_fcmp_cos(
; CHECK-NEXT: ret float -1.000000e+00
;
%fcmp = fcmp oeq float %x, 0x400921FB60000000
%cos = call float @llvm.cos.f32(float %x)
%sel = select i1 %fcmp, float %cos, float -1.0
ret float %sel
}
define i32 @select_fcmp_lrint(float %x) {
; CHECK-LABEL: @select_fcmp_lrint(
; CHECK-NEXT: [[FCMP:%.*]] = fcmp oeq float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[LRINT:%.*]] = call i32 @llvm.lrint.i32.f32(float [[X]])
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[FCMP]], i32 [[LRINT]], i32 1
; CHECK-NEXT: ret i32 [[SEL]]
;
%fcmp = fcmp oeq float %x, 1.0
%lrint = call i32 @llvm.lrint.i32.f32(float %x)
%sel = select i1 %fcmp, i32 %lrint, i32 1
ret i32 %sel
}
|
