1 // ignore-tidy-linelength
3 // compile-flags: -C no-prepopulate-passes
6 #![feature(naked_functions)]
8 // CHECK: Function Attrs: naked
9 // CHECK-NEXT: define void @naked_empty()
12 pub fn naked_empty() {
13 // CHECK-NEXT: {{.+}}:
14 // CHECK-NEXT: ret void
17 // CHECK: Function Attrs: naked
20 // CHECK-NEXT: define void @naked_with_args(i{{[0-9]+}})
21 pub fn naked_with_args(a: isize) {
22 // CHECK-NEXT: {{.+}}:
23 // CHECK-NEXT: %a = alloca i{{[0-9]+}}
24 &a; // keep variable in an alloca
28 // CHECK: Function Attrs: naked
29 // CHECK-NEXT: define i{{[0-9]+}} @naked_with_return()
32 pub fn naked_with_return() -> isize {
33 // CHECK-NEXT: {{.+}}:
34 // CHECK-NEXT: ret i{{[0-9]+}} 0
38 // CHECK: Function Attrs: naked
39 // CHECK-NEXT: define i{{[0-9]+}} @naked_with_args_and_return(i{{[0-9]+}})
42 pub fn naked_with_args_and_return(a: isize) -> isize {
43 // CHECK-NEXT: {{.+}}:
44 // CHECK-NEXT: %a = alloca i{{[0-9]+}}
45 &a; // keep variable in an alloca
46 // CHECK: ret i{{[0-9]+}} %{{[0-9]+}}
50 // CHECK: Function Attrs: naked
51 // CHECK-NEXT: define void @naked_recursive()
54 pub fn naked_recursive() {
55 // CHECK-NEXT: {{.+}}:
56 // CHECK-NEXT: call void @naked_empty()
58 // FIXME(#39685) Avoid one block per call.
59 // CHECK-NEXT: br label %bb1
64 // CHECK-NEXT: %{{[0-9]+}} = call i{{[0-9]+}} @naked_with_return()
66 // FIXME(#39685) Avoid one block per call.
67 // CHECK-NEXT: br label %bb2
70 // CHECK-NEXT: %{{[0-9]+}} = call i{{[0-9]+}} @naked_with_args_and_return(i{{[0-9]+}} %{{[0-9]+}})
72 // FIXME(#39685) Avoid one block per call.
73 // CHECK-NEXT: br label %bb3
76 // CHECK-NEXT: call void @naked_with_args(i{{[0-9]+}} %{{[0-9]+}})
78 // FIXME(#39685) Avoid one block per call.
79 // CHECK-NEXT: br label %bb4
83 naked_with_args_and_return(
87 // CHECK-NEXT: ret void