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
|
; RUN: opt -S -instcombine < %s | FileCheck %s
declare double @llvm.fabs.f64(double) nounwind readnone
define i1 @test1(float %x, float %y) nounwind {
%ext1 = fpext float %x to double
%ext2 = fpext float %y to double
%cmp = fcmp ogt double %ext1, %ext2
ret i1 %cmp
; CHECK-LABEL: @test1(
; CHECK-NEXT: fcmp ogt float %x, %y
}
define i1 @test2(float %a) nounwind {
%ext = fpext float %a to double
%cmp = fcmp ogt double %ext, 1.000000e+00
ret i1 %cmp
; CHECK-LABEL: @test2(
; CHECK-NEXT: fcmp ogt float %a, 1.0
}
define i1 @test3(float %a) nounwind {
%ext = fpext float %a to double
%cmp = fcmp ogt double %ext, 0x3FF0000000000001 ; more precision than float.
ret i1 %cmp
; CHECK-LABEL: @test3(
; CHECK-NEXT: fpext float %a to double
}
define i1 @test4(float %a) nounwind {
%ext = fpext float %a to double
%cmp = fcmp ogt double %ext, 0x36A0000000000000 ; denormal in float.
ret i1 %cmp
; CHECK-LABEL: @test4(
; CHECK-NEXT: fpext float %a to double
}
define i1 @test5(float %a) nounwind {
%neg = fsub float -0.000000e+00, %a
%cmp = fcmp ogt float %neg, 1.000000e+00
ret i1 %cmp
; CHECK-LABEL: @test5(
; CHECK-NEXT: fcmp olt float %a, -1.0
}
define i1 @test6(float %x, float %y) nounwind {
%neg1 = fsub float -0.000000e+00, %x
%neg2 = fsub float -0.000000e+00, %y
%cmp = fcmp olt float %neg1, %neg2
ret i1 %cmp
; CHECK-LABEL: @test6(
; CHECK-NEXT: fcmp ogt float %x, %y
}
define i1 @test7(float %x) nounwind readnone ssp noredzone {
%ext = fpext float %x to ppc_fp128
%cmp = fcmp ogt ppc_fp128 %ext, 0xM00000000000000000000000000000000
ret i1 %cmp
; CHECK-LABEL: @test7(
; CHECK-NEXT: fcmp ogt float %x, 0.000000e+00
}
define float @test8(float %x) nounwind readnone optsize ssp {
%conv = fpext float %x to double
%cmp = fcmp olt double %conv, 0.000000e+00
%conv1 = zext i1 %cmp to i32
%conv2 = sitofp i32 %conv1 to float
ret float %conv2
; Float comparison to zero shouldn't cast to double.
; CHECK-LABEL: @test8(
; CHECK-NEXT: fcmp olt float %x, 0.000000e+00
}
declare double @fabs(double) nounwind readnone
define i32 @test9(double %a) nounwind {
%call = tail call double @fabs(double %a) nounwind
%cmp = fcmp olt double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test9(
; CHECK-NOT: fabs
; CHECK: ret i32 0
}
define i32 @test9_intrinsic(double %a) nounwind {
%call = tail call double @llvm.fabs.f64(double %a) nounwind
%cmp = fcmp olt double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test9_intrinsic(
; CHECK-NOT: fabs
; CHECK: ret i32 0
}
define i32 @test10(double %a) nounwind {
%call = tail call double @fabs(double %a) nounwind
%cmp = fcmp ole double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test10(
; CHECK-NOT: fabs
; CHECK: fcmp oeq double %a, 0.000000e+00
}
define i32 @test10_intrinsic(double %a) nounwind {
%call = tail call double @llvm.fabs.f64(double %a) nounwind
%cmp = fcmp ole double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test10_intrinsic(
; CHECK-NOT: fabs
; CHECK: fcmp oeq double %a, 0.000000e+00
}
define i32 @test11(double %a) nounwind {
%call = tail call double @fabs(double %a) nounwind
%cmp = fcmp ogt double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test11(
; CHECK-NOT: fabs
; CHECK: fcmp one double %a, 0.000000e+00
}
define i32 @test11_intrinsic(double %a) nounwind {
%call = tail call double @llvm.fabs.f64(double %a) nounwind
%cmp = fcmp ogt double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test11_intrinsic(
; CHECK-NOT: fabs
; CHECK: fcmp one double %a, 0.000000e+00
}
define i32 @test12(double %a) nounwind {
%call = tail call double @fabs(double %a) nounwind
%cmp = fcmp oge double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test12(
; CHECK-NOT: fabs
; CHECK: fcmp ord double %a, 0.000000e+00
}
define i32 @test12_intrinsic(double %a) nounwind {
%call = tail call double @llvm.fabs.f64(double %a) nounwind
%cmp = fcmp oge double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test12_intrinsic(
; CHECK-NOT: fabs
; CHECK: fcmp ord double %a, 0.000000e+00
}
define i32 @test13(double %a) nounwind {
%call = tail call double @fabs(double %a) nounwind
%cmp = fcmp une double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test13(
; CHECK-NOT: fabs
; CHECK: fcmp une double %a, 0.000000e+00
}
define i32 @test13_intrinsic(double %a) nounwind {
%call = tail call double @llvm.fabs.f64(double %a) nounwind
%cmp = fcmp une double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test13_intrinsic(
; CHECK-NOT: fabs
; CHECK: fcmp une double %a, 0.000000e+00
}
define i32 @test14(double %a) nounwind {
%call = tail call double @fabs(double %a) nounwind
%cmp = fcmp oeq double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test14(
; CHECK-NOT: fabs
; CHECK: fcmp oeq double %a, 0.000000e+00
}
define i32 @test14_intrinsic(double %a) nounwind {
%call = tail call double @llvm.fabs.f64(double %a) nounwind
%cmp = fcmp oeq double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test14_intrinsic(
; CHECK-NOT: fabs
; CHECK: fcmp oeq double %a, 0.000000e+00
}
define i32 @test15(double %a) nounwind {
%call = tail call double @fabs(double %a) nounwind
%cmp = fcmp one double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test15(
; CHECK-NOT: fabs
; CHECK: fcmp one double %a, 0.000000e+00
}
define i32 @test15_intrinsic(double %a) nounwind {
%call = tail call double @llvm.fabs.f64(double %a) nounwind
%cmp = fcmp one double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test15_intrinsic(
; CHECK-NOT: fabs
; CHECK: fcmp one double %a, 0.000000e+00
}
define i32 @test16(double %a) nounwind {
%call = tail call double @fabs(double %a) nounwind
%cmp = fcmp ueq double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test16(
; CHECK-NOT: fabs
; CHECK: fcmp ueq double %a, 0.000000e+00
}
define i32 @test16_intrinsic(double %a) nounwind {
%call = tail call double @llvm.fabs.f64(double %a) nounwind
%cmp = fcmp ueq double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
; CHECK-LABEL: @test16_intrinsic(
; CHECK-NOT: fabs
; CHECK: fcmp ueq double %a, 0.000000e+00
}
; Don't crash.
define i32 @test17(double %a, double (double)* %p) nounwind {
%call = tail call double %p(double %a) nounwind
%cmp = fcmp ueq double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
}
|
