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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s --check-prefixes=ANY,NO-FLOAT-SHRINK
; RUN: opt < %s -instcombine -enable-double-float-shrink -S | FileCheck %s --check-prefixes=ANY,DO-FLOAT-SHRINK
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
declare double @cos(double)
declare double @llvm.cos.f64(double)
declare float @cosf(float)
declare float @llvm.cos.f32(float)
declare double @sin(double)
declare double @llvm.sin.f64(double)
declare float @sinf(float)
declare float @llvm.sin.f32(float)
declare double @tan(double)
declare fp128 @tanl(fp128)
; cos(-x) -> cos(x);
define double @cos_negated_arg(double %x) {
; ANY-LABEL: @cos_negated_arg(
; ANY-NEXT: [[COS:%.*]] = call double @cos(double [[X:%.*]])
; ANY-NEXT: ret double [[COS]]
;
%neg = fsub double -0.0, %x
%r = call double @cos(double %neg)
ret double %r
}
define float @cosf_negated_arg(float %x) {
; ANY-LABEL: @cosf_negated_arg(
; ANY-NEXT: [[COS:%.*]] = call float @cosf(float [[X:%.*]])
; ANY-NEXT: ret float [[COS]]
;
%neg = fsub float -0.0, %x
%r = call float @cosf(float %neg)
ret float %r
}
define float @cosf_negated_arg_FMF(float %x) {
; ANY-LABEL: @cosf_negated_arg_FMF(
; ANY-NEXT: [[COS:%.*]] = call reassoc nnan float @cosf(float [[X:%.*]])
; ANY-NEXT: ret float [[COS]]
;
%neg = fsub float -0.0, %x
%r = call nnan reassoc float @cosf(float %neg)
ret float %r
}
; sin(-x) -> -sin(x);
define double @sin_negated_arg(double %x) {
; ANY-LABEL: @sin_negated_arg(
; ANY-NEXT: [[TMP1:%.*]] = call double @sin(double [[X:%.*]])
; ANY-NEXT: [[TMP2:%.*]] = fsub double -0.000000e+00, [[TMP1]]
; ANY-NEXT: ret double [[TMP2]]
;
%neg = fsub double -0.0, %x
%r = call double @sin(double %neg)
ret double %r
}
define float @sinf_negated_arg(float %x) {
; ANY-LABEL: @sinf_negated_arg(
; ANY-NEXT: [[TMP1:%.*]] = call float @sinf(float [[X:%.*]])
; ANY-NEXT: [[TMP2:%.*]] = fsub float -0.000000e+00, [[TMP1]]
; ANY-NEXT: ret float [[TMP2]]
;
%neg = fsub float -0.0, %x
%r = call float @sinf(float %neg)
ret float %r
}
define float @sinf_negated_arg_FMF(float %x) {
; ANY-LABEL: @sinf_negated_arg_FMF(
; ANY-NEXT: [[TMP1:%.*]] = call nnan afn float @sinf(float [[X:%.*]])
; ANY-NEXT: [[TMP2:%.*]] = fsub nnan afn float -0.000000e+00, [[TMP1]]
; ANY-NEXT: ret float [[TMP2]]
;
%neg = fsub ninf float -0.0, %x
%r = call afn nnan float @sinf(float %neg)
ret float %r
}
declare void @use(double)
define double @sin_negated_arg_extra_use(double %x) {
; ANY-LABEL: @sin_negated_arg_extra_use(
; ANY-NEXT: [[NEG:%.*]] = fsub double -0.000000e+00, [[X:%.*]]
; ANY-NEXT: [[R:%.*]] = call double @sin(double [[NEG]])
; ANY-NEXT: call void @use(double [[NEG]])
; ANY-NEXT: ret double [[R]]
;
%neg = fsub double -0.0, %x
%r = call double @sin(double %neg)
call void @use(double %neg)
ret double %r
}
; -sin(-x) --> sin(x)
; PR38458: https://bugs.llvm.org/show_bug.cgi?id=38458
define double @neg_sin_negated_arg(double %x) {
; ANY-LABEL: @neg_sin_negated_arg(
; ANY-NEXT: [[TMP1:%.*]] = call double @sin(double [[X:%.*]])
; ANY-NEXT: ret double [[TMP1]]
;
%neg = fsub double -0.0, %x
%r = call double @sin(double %neg)
%rn = fsub double -0.0, %r
ret double %rn
}
; tan(-x) -> -tan(x);
define double @tan_negated_arg(double %x) {
; ANY-LABEL: @tan_negated_arg(
; ANY-NEXT: [[TMP1:%.*]] = call double @tan(double [[X:%.*]])
; ANY-NEXT: [[TMP2:%.*]] = fsub double -0.000000e+00, [[TMP1]]
; ANY-NEXT: ret double [[TMP2]]
;
%neg = fsub double -0.0, %x
%r = call double @tan(double %neg)
ret double %r
}
; tanl(-x) -> -tanl(x);
define fp128 @tanl_negated_arg(fp128 %x) {
; ANY-LABEL: @tanl_negated_arg(
; ANY-NEXT: [[TMP1:%.*]] = call fp128 @tanl(fp128 [[X:%.*]])
; ANY-NEXT: [[TMP2:%.*]] = fsub fp128 0xL00000000000000008000000000000000, [[TMP1]]
; ANY-NEXT: ret fp128 [[TMP2]]
;
%neg = fsub fp128 0xL00000000000000008000000000000000, %x
%r = call fp128 @tanl(fp128 %neg)
ret fp128 %r
}
define float @negated_and_shrinkable_libcall(float %f) {
; NO-FLOAT-SHRINK-LABEL: @negated_and_shrinkable_libcall(
; NO-FLOAT-SHRINK-NEXT: [[CONV1:%.*]] = fpext float [[F:%.*]] to double
; NO-FLOAT-SHRINK-NEXT: [[COS1:%.*]] = call double @cos(double [[CONV1]])
; NO-FLOAT-SHRINK-NEXT: [[CONV2:%.*]] = fptrunc double [[COS1]] to float
; NO-FLOAT-SHRINK-NEXT: ret float [[CONV2]]
;
; DO-FLOAT-SHRINK-LABEL: @negated_and_shrinkable_libcall(
; DO-FLOAT-SHRINK-NEXT: [[COSF:%.*]] = call float @cosf(float [[F:%.*]])
; DO-FLOAT-SHRINK-NEXT: ret float [[COSF]]
;
%conv1 = fpext float %f to double
%neg = fsub double -0.0, %conv1
%cos = call double @cos(double %neg)
%conv2 = fptrunc double %cos to float
ret float %conv2
}
; TODO: It was ok to shrink the libcall, so the intrinsic should shrink too?
define float @negated_and_shrinkable_intrinsic(float %f) {
; ANY-LABEL: @negated_and_shrinkable_intrinsic(
; ANY-NEXT: [[CONV1:%.*]] = fpext float [[F:%.*]] to double
; ANY-NEXT: [[COS:%.*]] = call double @llvm.cos.f64(double [[CONV1]])
; ANY-NEXT: [[CONV2:%.*]] = fptrunc double [[COS]] to float
; ANY-NEXT: ret float [[CONV2]]
;
%conv1 = fpext float %f to double
%neg = fsub double -0.0, %conv1
%cos = call double @llvm.cos.f64(double %neg)
%conv2 = fptrunc double %cos to float
ret float %conv2
}
|
