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
|
//@ assembly-output: emit-asm
//@ compile-flags: -O
//@ compile-flags: --target armv7-unknown-linux-gnueabihf
//@ compile-flags: -C target-feature=+neon
//@ needs-llvm-components: arm
#![feature(no_core, lang_items, rustc_attrs, repr_simd)]
#![crate_type = "rlib"]
#![no_core]
#![allow(asm_sub_register, non_camel_case_types)]
#[rustc_builtin_macro]
macro_rules! asm {
() => {};
}
#[rustc_builtin_macro]
macro_rules! concat {
() => {};
}
#[rustc_builtin_macro]
macro_rules! stringify {
() => {};
}
#[lang = "sized"]
trait Sized {}
#[lang = "copy"]
trait Copy {}
#[repr(simd)]
pub struct f32x4(f32, f32, f32, f32);
impl Copy for i32 {}
impl Copy for f32 {}
impl Copy for f64 {}
impl Copy for f32x4 {}
macro_rules! check {
($func:ident $modifier:literal $reg:ident $ty:ident $mov:literal) => {
// -O and extern "C" guarantee that the selected register is always r0/s0/d0/q0
#[no_mangle]
pub unsafe extern "C" fn $func() -> $ty {
// Hack to avoid function merging
extern "Rust" {
fn dont_merge(s: &str);
}
dont_merge(stringify!($func));
let y;
asm!(concat!($mov, " {0:", $modifier, "}, {0:", $modifier, "}"), out($reg) y);
y
}
};
}
// CHECK-LABEL: reg:
// CHECK: @APP
// CHECK: mov r0, r0
// CHECK: @NO_APP
check!(reg "" reg i32 "mov");
// CHECK-LABEL: sreg:
// CHECK: @APP
// CHECK: vmov.f32 s0, s0
// CHECK: @NO_APP
check!(sreg "" sreg f32 "vmov.f32");
// CHECK-LABEL: sreg_low16:
// CHECK: @APP
// CHECK: vmov.f32 s0, s0
// CHECK: @NO_APP
check!(sreg_low16 "" sreg_low16 f32 "vmov.f32");
// CHECK-LABEL: dreg:
// CHECK: @APP
// CHECK: vmov.f64 d0, d0
// CHECK: @NO_APP
check!(dreg "" dreg f64 "vmov.f64");
// CHECK-LABEL: dreg_low16:
// CHECK: @APP
// CHECK: vmov.f64 d0, d0
// CHECK: @NO_APP
check!(dreg_low16 "" dreg_low16 f64 "vmov.f64");
// CHECK-LABEL: dreg_low8:
// CHECK: @APP
// CHECK: vmov.f64 d0, d0
// CHECK: @NO_APP
check!(dreg_low8 "" dreg_low8 f64 "vmov.f64");
// CHECK-LABEL: qreg:
// CHECK: @APP
// CHECK: vorr q0, q0, q0
// CHECK: @NO_APP
check!(qreg "" qreg f32x4 "vmov");
// CHECK-LABEL: qreg_e:
// CHECK: @APP
// CHECK: vmov.f64 d0, d0
// CHECK: @NO_APP
check!(qreg_e "e" qreg f32x4 "vmov.f64");
// CHECK-LABEL: qreg_f:
// CHECK: @APP
// CHECK: vmov.f64 d1, d1
// CHECK: @NO_APP
check!(qreg_f "f" qreg f32x4 "vmov.f64");
// CHECK-LABEL: qreg_low8:
// CHECK: @APP
// CHECK: vorr q0, q0, q0
// CHECK: @NO_APP
check!(qreg_low8 "" qreg_low8 f32x4 "vmov");
// CHECK-LABEL: qreg_low8_e:
// CHECK: @APP
// CHECK: vmov.f64 d0, d0
// CHECK: @NO_APP
check!(qreg_low8_e "e" qreg_low8 f32x4 "vmov.f64");
// CHECK-LABEL: qreg_low8_f:
// CHECK: @APP
// CHECK: vmov.f64 d1, d1
// CHECK: @NO_APP
check!(qreg_low8_f "f" qreg_low8 f32x4 "vmov.f64");
// CHECK-LABEL: qreg_low4:
// CHECK: @APP
// CHECK: vorr q0, q0, q0
// CHECK: @NO_APP
check!(qreg_low4 "" qreg_low4 f32x4 "vmov");
// CHECK-LABEL: qreg_low4_e:
// CHECK: @APP
// CHECK: vmov.f64 d0, d0
// CHECK: @NO_APP
check!(qreg_low4_e "e" qreg_low4 f32x4 "vmov.f64");
// CHECK-LABEL: qreg_low4_f:
// CHECK: @APP
// CHECK: vmov.f64 d1, d1
// CHECK: @NO_APP
check!(qreg_low4_f "f" qreg_low4 f32x4 "vmov.f64");
|
