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
|
//@ compile-flags: -Copt-level=3 -C no-prepopulate-passes
#![crate_type = "lib"]
// CHECK-LABEL: @array_load
#[no_mangle]
pub fn array_load(a: &[u8; 4]) -> [u8; 4] {
// CHECK-NOT: alloca
// CHECK: %[[ALLOCA:.+]] = alloca [4 x i8], align 1
// CHECK-NOT: alloca
// CHECK: call void @llvm.memcpy.{{.+}}(ptr align 1 %[[ALLOCA]], ptr align 1 %a, {{.+}} 4, i1 false)
// CHECK: %[[TEMP:.+]] = load i32, ptr %[[ALLOCA]], align 1
// CHECK: ret i32 %[[TEMP]]
*a
}
// CHECK-LABEL: @array_store
#[no_mangle]
pub fn array_store(a: [u8; 4], p: &mut [u8; 4]) {
// CHECK-NOT: alloca
// CHECK: %[[TEMP:.+]] = alloca [4 x i8], [[TEMPALIGN:align [0-9]+]]
// CHECK-NOT: alloca
// CHECK: %a = alloca [4 x i8]
// CHECK-NOT: alloca
// store i32 %0, ptr %[[TEMP]]
// CHECK: call void @llvm.memcpy.{{.+}}(ptr align 1 %a, ptr [[TEMPALIGN]] %[[TEMP]], {{.+}} 4, i1 false)
// CHECK: call void @llvm.memcpy.{{.+}}(ptr align 1 %p, ptr align 1 %a, {{.+}} 4, i1 false)
*p = a;
}
// CHECK-LABEL: @array_copy
#[no_mangle]
pub fn array_copy(a: &[u8; 4], p: &mut [u8; 4]) {
// CHECK-NOT: alloca
// CHECK: %[[LOCAL:.+]] = alloca [4 x i8], align 1
// CHECK-NOT: alloca
// CHECK: call void @llvm.memcpy.{{.+}}(ptr align 1 %[[LOCAL]], ptr align 1 %a, {{.+}} 4, i1 false)
// CHECK: call void @llvm.memcpy.{{.+}}(ptr align 1 %p, ptr align 1 %[[LOCAL]], {{.+}} 4, i1 false)
*p = *a;
}
// CHECK-LABEL: @array_copy_1_element
#[no_mangle]
pub fn array_copy_1_element(a: &[u8; 1], p: &mut [u8; 1]) {
// CHECK-NOT: alloca
// CHECK: %[[LOCAL:.+]] = alloca [1 x i8], align 1
// CHECK-NOT: alloca
// CHECK: call void @llvm.memcpy.{{.+}}(ptr align 1 %[[LOCAL]], ptr align 1 %a, {{.+}} 1, i1 false)
// CHECK: call void @llvm.memcpy.{{.+}}(ptr align 1 %p, ptr align 1 %[[LOCAL]], {{.+}} 1, i1 false)
*p = *a;
}
// CHECK-LABEL: @array_copy_2_elements
#[no_mangle]
pub fn array_copy_2_elements(a: &[u8; 2], p: &mut [u8; 2]) {
// CHECK-NOT: alloca
// CHECK: %[[LOCAL:.+]] = alloca [2 x i8], align 1
// CHECK-NOT: alloca
// CHECK: call void @llvm.memcpy.{{.+}}(ptr align 1 %[[LOCAL]], ptr align 1 %a, {{.+}} 2, i1 false)
// CHECK: call void @llvm.memcpy.{{.+}}(ptr align 1 %p, ptr align 1 %[[LOCAL]], {{.+}} 2, i1 false)
*p = *a;
}
|
