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git.proxmox.com Git - rustc.git/blob - src/test/codegen/asm-options.rs
4 #![crate_type = "rlib"]
11 pub unsafe fn pure(x
: i32) {
13 asm
!("", out("ax") y
, in("cx") x
, options(pure, nomem
));
16 // CHECK-LABEL: @noreturn
17 // CHECK: call void asm
18 // CHECK-NEXT: unreachable
20 pub unsafe fn noreturn() {
21 asm
!("", options(noreturn
));
24 pub static mut VAR
: i32 = 0;
25 pub static mut DUMMY_OUTPUT
: i32 = 0;
27 // CHECK-LABEL: @readonly
28 // CHECK: call i32 asm
31 pub unsafe fn readonly() -> i32 {
33 asm
!("", out("ax") DUMMY_OUTPUT
, options(pure, readonly
));
37 // CHECK-LABEL: @not_readonly
38 // CHECK: call i32 asm
41 pub unsafe fn not_readonly() -> i32 {
43 asm
!("", out("ax") DUMMY_OUTPUT
, options());
47 // CHECK-LABEL: @nomem
49 // CHECK: call i32 asm
53 pub unsafe fn nomem() -> i32 {
55 asm
!("", out("ax") DUMMY_OUTPUT
, options(pure, nomem
));
60 // CHECK-LABEL: @nomem_nopure
62 // CHECK: call i32 asm
66 pub unsafe fn nomem_nopure() -> i32 {
68 asm
!("", out("ax") DUMMY_OUTPUT
, options(nomem
));
73 // CHECK-LABEL: @not_nomem
75 // CHECK: call i32 asm
79 pub unsafe fn not_nomem() -> i32 {
81 asm
!("", out("ax") DUMMY_OUTPUT
, options(pure, readonly
));
86 // CHECK-LABEL: @dont_remove_nonpure
87 // CHECK: call void asm
88 // CHECK: call void asm
89 // CHECK: call void asm
92 pub unsafe fn dont_remove_nonpure() {
94 asm
!("", options(nomem
));
95 asm
!("", options(readonly
));
99 // CHECK: call void asm sideeffect inteldialect "{} {}", ""()
101 pub unsafe fn raw() {
102 asm
!("{} {}", options(nostack
, nomem
, preserves_flags
, raw
));