/
wasm_casts_nontrapping.rs
162 lines (140 loc) · 4.41 KB
/
wasm_casts_nontrapping.rs
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
// only-wasm32
// compile-flags: -C target-feature=+nontrapping-fptoint
#![crate_type = "lib"]
// CHECK-LABEL: @cast_f64_i64
#[no_mangle]
pub fn cast_f64_i64(a: f64) -> i64 {
// CHECK: tail call i64 @llvm.wasm.trunc.saturate.signed.i64.f64(double {{.*}})
// CHECK-NEXT: ret i64 {{.*}}
a as _
}
// CHECK-LABEL: @cast_f64_i32
#[no_mangle]
pub fn cast_f64_i32(a: f64) -> i32 {
// CHECK: tail call i32 @llvm.wasm.trunc.saturate.signed.i32.f64(double {{.*}})
// CHECK-NEXT: ret i32 {{.*}}
a as _
}
// CHECK-LABEL: @cast_f32_i64
#[no_mangle]
pub fn cast_f32_i64(a: f32) -> i64 {
// CHECK: tail call i64 @llvm.wasm.trunc.saturate.signed.i64.f32(float {{.*}})
// CHECK-NEXT: ret i64 {{.*}}
a as _
}
// CHECK-LABEL: @cast_f32_i32
#[no_mangle]
pub fn cast_f32_i32(a: f32) -> i32 {
// CHECK: tail call i32 @llvm.wasm.trunc.saturate.signed.i32.f32(float {{.*}})
// CHECK-NEXT: ret i32 {{.*}}
a as _
}
// CHECK-LABEL: @cast_f64_u64
#[no_mangle]
pub fn cast_f64_u64(a: f64) -> u64 {
// CHECK: tail call i64 @llvm.wasm.trunc.saturate.unsigned.i64.f64(double {{.*}})
// CHECK-NEXT: ret i64 {{.*}}
a as _
}
// CHECK-LABEL: @cast_f64_u32
#[no_mangle]
pub fn cast_f64_u32(a: f64) -> u32 {
// CHECK: tail call i32 @llvm.wasm.trunc.saturate.unsigned.i32.f64(double {{.*}})
// CHECK-NEXT: ret i32 {{.*}}
a as _
}
// CHECK-LABEL: @cast_f32_u64
#[no_mangle]
pub fn cast_f32_u64(a: f32) -> u64 {
// CHECK: tail call i64 @llvm.wasm.trunc.saturate.unsigned.i64.f32(float {{.*}})
// CHECK-NEXT: ret i64 {{.*}}
a as _
}
// CHECK-LABEL: @cast_f32_u32
#[no_mangle]
pub fn cast_f32_u32(a: f32) -> u32 {
// CHECK: tail call i32 @llvm.wasm.trunc.saturate.unsigned.i32.f32(float {{.*}})
// CHECK-NEXT: ret i32 {{.*}}
a as _
}
// CHECK-LABEL: @cast_f32_u8
#[no_mangle]
pub fn cast_f32_u8(a: f32) -> u8 {
// CHECK-NOT: {{.*}} call {{.*}} @llvm.wasm.trunc.{{.*}}
// CHECK: fptoui float {{.*}} to i8
// CHECK-NEXT: select i1 {{.*}}, i8 {{.*}}, i8 {{.*}}
// CHECK-NEXT: ret i8 {{.*}}
a as _
}
// CHECK-LABEL: @cast_unchecked_f64_i64
#[no_mangle]
pub unsafe fn cast_unchecked_f64_i64(a: f64) -> i64 {
// CHECK-NOT: {{.*}} call {{.*}} @llvm.wasm.trunc.{{.*}}
// CHECK: fptosi double {{.*}} to i64
// CHECK-NEXT: ret i64 {{.*}}
a.to_int_unchecked()
}
// CHECK-LABEL: @cast_unchecked_f64_i32
#[no_mangle]
pub unsafe fn cast_unchecked_f64_i32(a: f64) -> i32 {
// CHECK-NOT: {{.*}} call {{.*}} @llvm.wasm.trunc.{{.*}}
// CHECK: fptosi double {{.*}} to i32
// CHECK-NEXT: ret i32 {{.*}}
a.to_int_unchecked()
}
// CHECK-LABEL: @cast_unchecked_f32_i64
#[no_mangle]
pub unsafe fn cast_unchecked_f32_i64(a: f32) -> i64 {
// CHECK-NOT: {{.*}} call {{.*}} @llvm.wasm.trunc.{{.*}}
// CHECK: fptosi float {{.*}} to i64
// CHECK-NEXT: ret i64 {{.*}}
a.to_int_unchecked()
}
// CHECK-LABEL: @cast_unchecked_f32_i32
#[no_mangle]
pub unsafe fn cast_unchecked_f32_i32(a: f32) -> i32 {
// CHECK-NOT: {{.*}} call {{.*}} @llvm.wasm.trunc.{{.*}}
// CHECK: fptosi float {{.*}} to i32
// CHECK-NEXT: ret i32 {{.*}}
a.to_int_unchecked()
}
// CHECK-LABEL: @cast_unchecked_f64_u64
#[no_mangle]
pub unsafe fn cast_unchecked_f64_u64(a: f64) -> u64 {
// CHECK-NOT: {{.*}} call {{.*}} @llvm.wasm.trunc.{{.*}}
// CHECK: fptoui double {{.*}} to i64
// CHECK-NEXT: ret i64 {{.*}}
a.to_int_unchecked()
}
// CHECK-LABEL: @cast_unchecked_f64_u32
#[no_mangle]
pub unsafe fn cast_unchecked_f64_u32(a: f64) -> u32 {
// CHECK-NOT: {{.*}} call {{.*}} @llvm.wasm.trunc.{{.*}}
// CHECK: fptoui double {{.*}} to i32
// CHECK-NEXT: ret i32 {{.*}}
a.to_int_unchecked()
}
// CHECK-LABEL: @cast_unchecked_f32_u64
#[no_mangle]
pub unsafe fn cast_unchecked_f32_u64(a: f32) -> u64 {
// CHECK-NOT: {{.*}} call {{.*}} @llvm.wasm.trunc.{{.*}}
// CHECK: fptoui float {{.*}} to i64
// CHECK-NEXT: ret i64 {{.*}}
a.to_int_unchecked()
}
// CHECK-LABEL: @cast_unchecked_f32_u32
#[no_mangle]
pub unsafe fn cast_unchecked_f32_u32(a: f32) -> u32 {
// CHECK-NOT: {{.*}} call {{.*}} @llvm.wasm.trunc.{{.*}}
// CHECK: fptoui float {{.*}} to i32
// CHECK-NEXT: ret i32 {{.*}}
a.to_int_unchecked()
}
// CHECK-LABEL: @cast_unchecked_f32_u8
#[no_mangle]
pub unsafe fn cast_unchecked_f32_u8(a: f32) -> u8 {
// CHECK-NOT: {{.*}} call {{.*}} @llvm.wasm.trunc.{{.*}}
// CHECK: fptoui float {{.*}} to i8
// CHECK-NEXT: ret i8 {{.*}}
a.to_int_unchecked()
}