mirror of https://github.com/rust-lang/rust
29 lines
1.0 KiB
Rust
29 lines
1.0 KiB
Rust
// Test that the `fn_ret_thunk_extern` function attribute is (not) emitted when
|
|
// the `-Zfunction-return={keep,thunk-extern}` flag is (not) set.
|
|
|
|
//@ revisions: unset keep thunk-extern keep-thunk-extern thunk-extern-keep
|
|
//@ needs-llvm-components: x86
|
|
//@ compile-flags: --target x86_64-unknown-linux-gnu
|
|
//@ [keep] compile-flags: -Zfunction-return=keep
|
|
//@ [thunk-extern] compile-flags: -Zfunction-return=thunk-extern
|
|
//@ [keep-thunk-extern] compile-flags: -Zfunction-return=keep -Zfunction-return=thunk-extern
|
|
//@ [thunk-extern-keep] compile-flags: -Zfunction-return=thunk-extern -Zfunction-return=keep
|
|
|
|
#![crate_type = "lib"]
|
|
#![feature(no_core, lang_items)]
|
|
#![no_core]
|
|
|
|
#[lang = "sized"]
|
|
trait Sized {}
|
|
|
|
#[no_mangle]
|
|
pub fn foo() {
|
|
// CHECK: @foo() unnamed_addr #0
|
|
|
|
// unset-NOT: fn_ret_thunk_extern
|
|
// keep-NOT: fn_ret_thunk_extern
|
|
// thunk-extern: attributes #0 = { {{.*}}fn_ret_thunk_extern{{.*}} }
|
|
// keep-thunk-extern: attributes #0 = { {{.*}}fn_ret_thunk_extern{{.*}} }
|
|
// thunk-extern-keep-NOT: fn_ret_thunk_extern
|
|
}
|